A stairway device

Abstract

This utility model's stepped device includes a first step, a second step, a locking component, and a fixing assembly. The first step has a first longitudinal support rod with a first through hole at its bottom end; the second step has a second through hole on its second longitudinal support rod, and the locking component passes through both through holes to lock the two steps. The fixing assembly consists of a first fixing component and a second fixing component. The first fixing component connects the top of the first step to the ground, firmly fixing its top end to prevent movement or shaking during use; the second fixing component connects the bottom of the second step to the bottom of the pit, ensuring the second step is fixed in position within the pit and providing a stable support foundation for the stepped device. This stepped device differs from manually excavated construction steps; it does not rely on loose soil for support but maintains stability through its own structure and its connection to the ground and the bottom of the pit. It effectively avoids situations where insufficient support force leads to landslides or damage due to loose soil, providing construction workers with a safer and more reliable access route.

Description

Technical Field

[0001] This utility model relates to the field of utility pole installation technology, and in particular to a stepped device. Background Technology

[0002] In the field of power engineering construction, 10kV overhead lines, as an important component of the power system, undertake the critical task of power transmission and distribution. The quality and efficiency of their pole erection directly affect the safe and stable operation of the entire power line and the reliability of power supply.

[0003] Currently, the erection of 10kV overhead power line poles typically follows a set procedure. Construction begins with the excavation of the pole pit to create the foundation space for installation. Next, manual excavation of construction steps is carried out. This step aims to create a passage for workers to enter and exit the pit. After the steps are excavated, a base plate is placed at the bottom of the pit, and its level is carefully adjusted to ensure the stability of the pole installation. Following this, the pole is hoisted and precisely installed onto the base plate. Workers then exit the pit via the construction steps. Finally, the earthwork is backfilled and compacted, completing the entire pole erection process.

[0004] During the manual excavation of construction steps, soil loosening is a frequent occurrence, especially in areas with loose soil where the problem is more severe. Loose soil lacks sufficient support, making the construction steps highly susceptible to landslides or even damage, posing a significant threat to the lives of construction workers who risk falling. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a stepped device that can solve the problem that during the construction of utility poles, when manually excavating construction steps, especially in areas with loose soil, the loose soil causes the construction steps to lack sufficient support, making them prone to landslides or even damage, thus posing a risk of falls to construction workers and seriously threatening their lives.

[0006] A staircase device according to an embodiment of the present invention includes a first staircase, a second staircase, a locking member, and a fixing component. The first staircase includes a first longitudinal support rod with a first through hole at its bottom end. The second staircase includes a second longitudinal support rod with a second through hole. The locking member is used to pass through the first through hole and the second through hole to lock the first staircase and the second staircase. The fixing component includes a first fixing member and a second fixing member. The first fixing member is used to connect the top end of the first staircase to the ground, and the second fixing member is used to connect the bottom end of the second staircase to the bottom surface of the pit.

[0007] According to an embodiment of this utility model, a stepped device has at least the following beneficial effects: At the foundation pit construction site, a first step and a second step are first placed in suitable positions. The first step includes a first longitudinal support rod, and the second step includes a second longitudinal support rod. By passing a locking member through a first through hole at the bottom of the first longitudinal support rod and a second through hole on the second longitudinal support rod, the first step and the second step are securely locked together, forming a stepped device with a certain height and structure. A first fixing member is used to connect the top of the first step to the ground, firmly fixing the top of the first step to the ground to prevent it from moving or shaking during use. A second fixing member is used to connect the bottom of the second step to the bottom surface of the foundation pit, ensuring that the position of the second step within the foundation pit is fixed, providing a stable support foundation for the entire stepped device. Unlike manually excavated construction steps, it does not rely on loose soil for support, but rather relies on its own structure and its connection to the ground and the bottom surface of the foundation pit to maintain stability, avoiding the problem of landslides or damage due to insufficient support caused by loose soil.

[0008] According to some embodiments of the present invention, at least two second through holes are provided on the second longitudinal support rod at intervals along its axial direction, and the locking member can selectively penetrate the first through hole and any of the second through holes to realize the height adjustment of the step device.

[0009] According to some embodiments of the present invention, the second longitudinal support rod is provided with a sliding groove extending along its axial direction, the second step includes a second tread connected to the second longitudinal support rod, all second through holes are connected to the sliding groove, the bottom end of the first longitudinal support rod is slidably embedded in the sliding groove, and the locking member can selectively penetrate the first through hole and any of the second through holes to lock the relative position of the first longitudinal support rod and the second longitudinal support rod.

[0010] According to some embodiments of the present invention, a hook is hinged to the first longitudinal support rod, and the second step includes a second tread connected to the second longitudinal support rod. The hook is used to engage the second tread to lock the first step and the second step.

[0011] According to some embodiments of the present invention, the first step includes a first tread connected to the first longitudinal support rod, and both the first tread and the second tread are provided with anti-slip textures or anti-slip protrusions on their tread surfaces.

[0012] According to some embodiments of the present invention, the first fixing member and the second fixing member are both inclined fixing nails. The fixing nail includes a connecting end and a fixing end. The connecting end is fixedly connected to the first longitudinal support rod or the second longitudinal support rod, and the fixing end is inserted into the ground or the foundation pit to achieve fixation.

[0013] According to some embodiments of the present invention, the step device further includes a reinforcing rib assembly, which connects the first longitudinal support rod and the first tread, and the second longitudinal support rod and the second tread.

[0014] According to some embodiments of the present invention, the reinforcing rib assembly includes a horizontal support member, a vertical support member, and an oblique support member. The horizontal support member is detachably connected to the bottom of the first pedal or the second pedal. The vertical support member is detachably connected to the inner side of the first longitudinal support rod or the second longitudinal support rod. The oblique support member is inclinedly disposed between the horizontal support member and the vertical support member. The three together form a triangular stable structure.

[0015] According to some embodiments of the present invention, the stepped device includes a first fastening unit and a second fastening unit. The transverse support and the vertical support are each provided with at least one mounting hole. The first pedal, the second pedal, the first longitudinal support rod, and the second longitudinal support rod are provided with mating holes at corresponding positions. The first fastening unit includes a first threaded rod and a first nut. The first threaded rod passes through the mounting hole of the transverse support and the mating hole of the first pedal or the mating hole of the second pedal. The first nut is tightened to the first threaded rod. The second fastening unit includes a second threaded rod and a second nut. The second threaded rod passes through the mounting hole of the vertical support and the mating hole of the first longitudinal support rod or the mating hole of the second longitudinal support rod. The second nut is tightened to the second threaded rod.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the combined structure of the stepped device, the foundation pit, and the utility pole of this utility model;

[0019] Figure 2 This is a schematic diagram of the first and second steps of Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the first and second steps of Embodiment 2 of this utility model.

[0021] Figure label:

[0022] 10. First longitudinal support rod; 11. First pedal; 12. First through hole; 13. Second longitudinal support rod; 14. Second pedal; 15. Second through hole; 16. Fixing pin; 17. Hook;

[0023] 20. Horizontal support; 21. Vertical support; 22. Diagonal support.

[0024] 30. Excavation pit; 31. Utility pole; 32. Chassis. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Please refer to Figures 1-3 According to an embodiment of the present invention, a stepped device includes a first step, a second step, a locking member, and a fixing component. The first step includes a first longitudinal support rod 10, and a first through hole 12 is provided at the bottom end of the first longitudinal support rod 10. The second step includes a second longitudinal support rod 13, and a second through hole 15 is provided on the second longitudinal support rod 13. The locking member is used to pass through the first through hole 12 and the second through hole 15 to lock the first step and the second step. The fixing component includes a first fixing member and a second fixing member. The first fixing member is used to connect the top end of the first step to the ground, and the second fixing member is used to connect the bottom end of the second step to the bottom surface of the pit 30.

[0030] At the construction site of foundation pit 30, the first and second steps are first placed in suitable positions. The first step includes a first longitudinal support rod 10, and the second step includes a second longitudinal support rod 13. By passing locking members through the first through hole 12 at the bottom of the first longitudinal support rod 10 and the second through hole 15 on the second longitudinal support rod 13, the first and second steps are securely locked together, forming a complete staircase device with a certain height and structure. The first fixing member is used to connect the top of the first step to the ground, firmly fixing the top of the first step to the ground to prevent it from moving or shaking during use. The second fixing member is used to connect the bottom of the second step to the bottom surface of foundation pit 30, ensuring that the position of the second step is fixed within foundation pit 30, providing a stable support foundation for the entire staircase device. Unlike manually excavated construction steps, it does not rely on loose soil for support, but rather relies on its own structure and connection with the ground and the bottom surface of foundation pit 30 to maintain stability, avoiding the problem of landslides or damage caused by insufficient support due to loose soil.

[0031] After the construction workers enter the bottom of the pit 30 along the stepped device, they will place the base plate 32 at the bottom of the pit and carefully adjust its levelness to ensure the stability of the installation of the pole 31.

[0032] According to some embodiments of the present invention, at least two second through holes 15 are provided on the second longitudinal support rod 13 at intervals along its axial direction, and the locking member can selectively pass through the first through hole 12 and any of the second through holes 15 to realize the height adjustment of the step device.

[0033] Since at least two second through holes 15 are spaced apart along the axial direction on the second longitudinal support rod 13, construction personnel select a suitable position from these second through holes 15 based on the assessed height requirements of the stepped device. A locking piece is then inserted through the first through hole 12 at the bottom of the first longitudinal support rod 10 and the selected second through hole 15, thus securely locking the first and second steps together to form a stepped device that meets the height requirements. When the step height needs to be adjusted, simply remove the locking piece, select a suitable second through hole 15 again, and insert the locking piece to lock it in place. Construction personnel can quickly adjust the step height according to the actual site conditions, saving time and labor costs and improving construction efficiency.

[0034] According to some embodiments of the present invention, the first step includes a first tread 11 connected to the first longitudinal support rod 10, and the second step includes a second tread 14 connected to the second longitudinal support rod 13. The first tread 11 and the second tread 14 are provided with anti-slip textures or anti-slip protrusions on their tread surfaces.

[0035] During the climb, construction workers need to constantly shift their footing and center of gravity. Anti-slip textures or protrusions ensure that the workers' feet are firmly fixed to the steps, reducing body swaying caused by foot slippage and improving climbing stability.

[0036] According to some embodiments of the present invention, the first fixing member and the second fixing member are both inclined fixing nails 16. The fixing nail 16 includes a connecting end and a fixing end. The connecting end is fixedly connected to the first longitudinal support rod 10 or the second longitudinal support rod 13, and the fixing end is inserted into the ground or the foundation pit 30 to achieve fixation.

[0037] The inclined fixing pins 16 form a certain angle with the ground or the bottom surface of the pit 30. When the staircase is subjected to external forces (such as the force of workers stepping on it, wind, etc.), the fixing pins 16 can provide a torque to resist overturning. Taking the first step as an example, when a worker steps on the first tread 11, it will generate a downward force and a torque that may cause the step to overturn. After the inclined fixing pins 16 are inserted into the ground, the ground will generate a reaction force on the fixing pins 16. This reaction force can be decomposed into a vertically upward component and a horizontal component. The horizontal component can offset part of the torque that would cause the step to overturn, thereby enhancing the anti-overturning ability of the staircase. This fixing method is particularly important in areas with loose soil. It can ensure that the staircase is always in the correct position and will not shift due to soil loosening, providing a reliable passage for workers to enter and exit the pit 30.

[0038] According to some embodiments of the present invention, the step device further includes a reinforcing rib assembly, which connects the first longitudinal support rod 10 and the first step 11, as well as the second longitudinal support rod 13 and the second step 14.

[0039] According to some embodiments of the present invention, the reinforcing rib assembly includes a transverse support 20, a vertical support 21, and an oblique support 22. The transverse support 20 is detachably connected to the bottom of the first pedal 11 or the second pedal 14. The vertical support 21 is detachably connected to the inner side of the first longitudinal support rod 10 or the second longitudinal support rod 13. The oblique support 22 is inclinedly disposed between the transverse support 20 and the vertical support 21. The three together form a triangular stable structure.

[0040] According to some embodiments of the present invention, the step device includes a first fastening unit and a second fastening unit. The transverse support member 20 and the vertical support member 21 are each provided with at least one mounting hole. The first pedal 11, the second pedal 14, the first longitudinal support rod 10 and the second longitudinal support rod 13 are provided with mating holes at corresponding positions. The first fastening unit includes a first threaded rod and a first nut. The first threaded rod passes through the mounting hole of the transverse support member 20 and the mating hole of the first pedal 11 or the mating hole of the second pedal 14. The first nut is tightened to the first threaded rod. The second fastening unit includes a second threaded rod and a second nut. The second threaded rod passes through the mounting hole of the vertical support member 21 and the mating hole of the first longitudinal support rod 10 or the mating hole of the second longitudinal support rod 13. The second nut is tightened to the second threaded rod.

[0041] The horizontal support 20, vertical support 21, and diagonal support 22 of this invention are integrally formed. Construction personnel place the reinforcing rib assembly in the corresponding positions, ensuring that the horizontal support 20 aligns with the underside of the first pedal 11 or the second pedal 14, and the vertical support 21 aligns with the inner side of the first longitudinal support rod 10 or the second longitudinal support rod 13. At this point, the reinforcing rib assembly, based on its shape, achieves initial positioning and fit with the pedal and support rod. The first threaded rod is then passed sequentially through the mounting hole of the horizontal support 20 and the mating hole of the first pedal 11 or the second pedal 14. A first nut is then tightened at the other end of the first threaded rod, securely fixing the horizontal support 20 under the pedal through the threaded connection. Similarly, a second threaded rod is passed through the mounting hole of the vertical support 21 and the mating hole of the first longitudinal support rod 10 or the second longitudinal support rod 13, and a second nut is tightened, fixing the vertical support 21 to the inner side of the support rod. In this way, the reinforcing rib assembly is tightly connected to the pedal and support rod through the fastening unit, forming a stable overall structure. During the erection of pole 31, workers will frequently walk on the platform, which will bear considerable pressure. In the one-piece reinforced rib assembly, the transverse support 20 is tightly connected to the underside of the platform. When the platform is under pressure, the transverse support 20 can evenly distribute the pressure to a wider area. For example, pressure that was originally concentrated at a certain point on the platform will be transferred to adjacent areas through the transverse support 20, preventing the platform from deforming or being damaged locally due to excessive pressure.

[0042] There are two embodiments of the assembly of the first and second steps of this utility model, which are described in detail below.

[0043] Example 1:

[0044] Please refer to Figure 2According to some embodiments of the present invention, the second longitudinal support rod 13 is provided with a sliding groove extending along its axial direction, all the second through holes 15 are connected to the sliding groove, the bottom end of the first longitudinal support rod 10 is slidably embedded in the sliding groove, and the locking member can selectively penetrate the first through hole 12 and any second through hole 15 to lock the relative position of the first longitudinal support rod 10 and the second longitudinal support rod 13.

[0045] In the initial stage of installation of the stepped device, the bottom end of the first longitudinal support rod 10 is embedded in the groove of the second longitudinal support rod 13. At this time, the first longitudinal support rod 10 can slide freely along the axial direction of the second longitudinal support rod 13 within the groove. This is similar to inserting a stick into a grooved pipe, where the stick can move up and down within the groove. Construction workers manually slide the first longitudinal support rod 10 according to actual construction needs, such as the depth of the pit 30, the height of the workers, and ease of operation. For example, if the pit 30 is deep, workers will slide the first longitudinal support rod 10 upwards to increase the overall height of the stepped device; conversely, if the pit 30 is shallow or the height of the stepped device needs to be lowered for easier handling, the first longitudinal support rod 10 will be slid downwards. Workers then pass locking components sequentially through the first through hole 12 and the connected second through hole 15. The locking components can be common connectors such as bolts or pins. Taking bolts as an example, the construction workers insert the bolts into the aligned through holes, and then screw a nut on the other end of the bolts and tighten it, thereby firmly locking the relative positions of the first longitudinal support rod 10 and the second longitudinal support rod 13.

[0046] Example 2:

[0047] Please refer to Figure 3 According to some embodiments of the present invention, a hook 17 is hinged to the first longitudinal support rod 10, and the second step includes a second pedal 14 connected to the second longitudinal support rod 13. The hook 17 is used to engage the second pedal 14 to lock the first step and the second step.

[0048] During installation, the workers adjust the distance between the first and second steps so that the open end of the hook 17 is accurately aligned with the edge of the second step 14. Then, they gently rotate the hook 17 to engage the open end with the second step 14. During this engagement, friction and mechanical restraint are generated between the hook 17 and the second step 14, thus initially locking the first and second steps together. The hook 17 effectively prevents relative movement between the first and second steps, ensuring the overall stability of the stair system.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A stepped device for allowing construction workers to enter and exit a foundation pit, characterized in that, include: The first step includes a first longitudinal support rod, and a first through hole is provided at the bottom end of the first longitudinal support rod; The second step includes a second longitudinal support rod, and a second through hole is provided on the second longitudinal support rod; A locking element is used to pass through the first through hole and the second through hole to lock the first step and the second step; The fixing component includes a first fixing member and a second fixing member, wherein the first fixing member is used to connect the top of the first step to the ground, and the second fixing member is used to connect the bottom of the second step to the bottom surface of the pit.

2. The stepped device according to claim 1, characterized in that: The second longitudinal support rod is provided with at least two second through holes spaced apart along its axial direction. The locking member can selectively pass through the first through hole and either of the second through holes to realize the height adjustment of the step device.

3. The stepped device according to claim 2, characterized in that: The second longitudinal support rod is provided with a sliding groove extending along its axial direction. The second step includes a second tread connected to the second longitudinal support rod. All second through holes communicate with the sliding groove. The bottom end of the first longitudinal support rod is slidably embedded in the sliding groove. The locking member can selectively penetrate the first through hole and any of the second through holes to lock the relative positions of the first longitudinal support rod and the second longitudinal support rod.

4. The stepped device according to claim 2, characterized in that: The first longitudinal support rod is hinged with a hook, and the second step includes a second tread connected to the second longitudinal support rod. The hook is used to engage the second tread to lock the first step and the second step.

5. The stepped device according to any one of claims 3 or 4, characterized in that: The first step includes a first tread connected to the first longitudinal support rod, and both the first tread and the second tread have anti-slip textures or anti-slip protrusions on their tread surfaces.

6. The stepped device according to claim 1, characterized in that: Both the first and second fixing components are inclined fixing nails. Each fixing nail includes a connecting end and a fixing end. The connecting end is fixedly connected to the first or second longitudinal support rod, and the fixing end is inserted into the ground or foundation pit to achieve fixation.

7. The stepped device according to claim 5, characterized in that: It also includes a reinforcing rib assembly, which connects the first longitudinal support rod and the first pedal, and the second longitudinal support rod and the second pedal.

8. The stepped device according to claim 7, characterized in that: The reinforcing rib assembly includes a horizontal support, a vertical support, and an oblique support. The horizontal support is detachably connected to the bottom of the first or second pedal. The vertical support is detachably connected to the inner side of the first or second longitudinal support rod. The oblique support is inclinedly disposed between the horizontal and vertical support, and the three together form a triangular stable structure.

9. The stepped device according to claim 8, characterized in that: The device includes a first fastening unit and a second fastening unit. The transverse support and the vertical support each have at least one mounting hole. The first pedal, the second pedal, the first longitudinal support rod, and the second longitudinal support rod each have corresponding mating holes. The first fastening unit includes a first threaded rod and a first nut. The first threaded rod passes through the mounting hole of the transverse support and the mating hole of the first pedal or the second pedal. The first nut tightens the first threaded rod. The second fastening unit includes a second threaded rod and a second nut. The second threaded rod passes through the mounting hole of the vertical support and the mating hole of the first longitudinal support rod or the second longitudinal support rod. The second nut tightens the second threaded rod.

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