Step ladder for foundation pit construction

Abstract

The utility model provides a step ladder for foundation pit construction, which solves the technical problem that unstable support is easy to generate in the use process when a steel ladder is used for erecting a vertical channel of a foundation pit at present. Comprising a first step ladder unit, the first step ladder unit comprises a first frame assembly and a first step ladder connected to the first frame assembly, the first frame assembly comprises a first vertical frame, the first vertical frame comprises a first body and a first rotating rod which are coaxially and rotatably connected, the first vertical frame can rotate in the axial direction of the first body, and the first rotating rod is provided with an elastic piece; the elastic piece is located outside the containing cavity and can stretch out and draw back in the radial direction of the first rotating rod. The second step ladder unit comprises a second frame assembly and a second step ladder connected to the second frame assembly, the second frame assembly comprises a second vertical frame internally provided with a second connecting groove, and the second connecting groove comprises a groove body and a plurality of auxiliary grooves communicating with the groove body, so that the first rotating rod can be inserted into the second connecting groove; the elastic piece is arranged in the auxiliary groove; the connection stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit construction passages, in particular to a step ladder for foundation pit construction. Background Art

[0002] The foundation pit is an earth pit excavated at the designed location of the foundation according to the base elevation and foundation plane dimensions. Before excavation, the excavation plan should be determined based on geological and hydrological data and the conditions of nearby buildings on site, and waterproofing and drainage work should be done. If the excavation is not deep, the side slope can be used to stabilize the soil slope, and the slope size is determined according to relevant construction regulations. For deeper excavations and nearby buildings, foundation pit wall support methods and shotcrete wall protection methods can be used. Large foundation pits can even use underground continuous walls and column-type bored pile chains to prevent the outer soil layer from collapsing. If there is no impact on nearby buildings, the well point method can be used to lower the groundwater level and adopt slope reduction and open excavation. In cold areas, natural cold air freezing methods can be used for excavation, etc.

[0003] During the construction of foundation pit projects, steel ladders are generally used to build vertical passages. The steel ladders are supported on the bottom of the foundation pit. During use, unstable support is prone to occur, resulting in low operational safety. Utility Model Content

[0004] The purpose of the utility model is to provide a step ladder for foundation pit construction, so as to solve the technical problem that in the current foundation pit construction process, a vertical passage is built with a steel ladder, and the steel ladder is supported on the bottom surface of the foundation pit. During use, the support is easily unstable, resulting in low operational safety.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] A step ladder for foundation pit construction, comprising a first step ladder unit and a second step ladder unit;

[0007] The first step ladder unit includes a first frame assembly and a first step ladder connected to the first frame assembly, the first frame assembly includes a first vertical frame, the first vertical frame includes a first body and a first rotating rod that are coaxially and rotatably connected, the first body is provided with a receiving cavity, the first rotating rod is at least partially located in the receiving cavity and can rotate along the axial direction of the first body, and the first rotating rod is provided with an elastic member, the elastic member is located outside the receiving cavity and can reciprocate and extend radially along the first rotating rod;

[0008] The second step ladder unit is detachably connected to the first step ladder unit, comprising a second frame assembly and a second step ladder connected to the second frame assembly, the second frame assembly comprising a second vertical frame having a second connecting groove therein, the second connecting groove comprising a groove body and a plurality of auxiliary grooves connected to the groove body to match the first rotating rod so that the first rotating rod can be inserted into the second connecting groove, and the elastic member is disposed in the auxiliary groove;

[0009] There are a plurality of the first step unit and the second step unit, which are arranged in sequence along the vertical direction.

[0010] In some embodiments, the first frame assembly further includes a first transverse frame, the first transverse frame is provided with a first plug connector, the first vertical frame is provided with a first plug slot, and the first transverse frame can be inserted into the first vertical frame.

[0011] In some embodiments, a plurality of first vertical frames are provided and connected by a first connecting rod.

[0012] In some embodiments, a plurality of second vertical frames are provided and connected by a second connecting rod.

[0013] In some embodiments, the second frame assembly includes a second transverse frame, the second transverse frame is provided with a second plug connector, the second vertical frame is provided with a second plug slot, and the second transverse frame can be inserted into the second vertical frame.

[0014] In some embodiments, the second plug connector of the second horizontal frame includes an upper plug connector located at the top of the second horizontal frame and plugged into the second vertical frame, and a lower plug connector located at the bottom of the second horizontal frame and plugged into the first horizontal frame, and a third plug slot matching the lower plug connector is provided at the top of the first horizontal frame.

[0015] In some embodiments, the first step ladder unit and the second step ladder unit are each provided with a reinforcement frame, and the reinforcement frame is arranged at an angle to the first vertical frame / the second vertical frame.

[0016] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0017] (1) The utility model provides a first rotating rod of the first vertical frame, and the first rotating rod is provided with an elastic member, which is located outside the accommodating cavity and can reciprocate and extend along the radial direction of the first rotating rod. The second vertical frame is provided with two connecting grooves, and the second connecting groove includes a groove body and a plurality of auxiliary grooves connected to the groove body to match the first rotating rod, so that the first rotating rod can be inserted into the second connecting groove. The elastic member is provided in the auxiliary groove to increase the connection effect and increase the connection stability.

[0018] (2) The utility model is provided with a second transverse frame, the second transverse frame is provided with a second plug connector, the second vertical frame is provided with a second plug slot, and the second transverse frame can be inserted into the second vertical frame to further increase the connection effect and increase the connection stability.

[0019] (3) The utility model is provided with a first transverse frame, the first transverse frame is provided with a first plug connector, the first vertical frame is provided with a first plug slot, and the first transverse frame can be inserted into the first vertical frame to further increase the connection effect and increase the connection stability.

[0020] (4) The first step ladder unit and the second step ladder unit are respectively provided with a reinforcement frame, and the reinforcement frame is set at an angle with the first vertical frame / second vertical frame to further increase the connection stability.

[0021] (5) The utility model has reasonable design, simple structure and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the internal structure of a step ladder for foundation pit construction provided by an embodiment of the utility model;

[0024] Figure 2 A schematic structural diagram of a step ladder for foundation pit construction provided by an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the disassembled structure of the first step unit of the step ladder for foundation pit construction provided by an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the disassembled structure of the second step unit of the step ladder for foundation pit construction provided by an embodiment of the utility model;

[0027] icon:

[0028] 100, first step ladder unit;

[0029] 110. First step of the ladder;

[0030] 121. First body; 122. First rotating rod; 123. First transverse frame; 124. First connecting rod; 125. Elastic member;

[0031] 200, second step ladder unit;

[0032] 210, second step ladder; 220, second vertical frame; 230, second connecting rod; 240, second horizontal frame;

[0033] 300. Reinforcement frame. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Example

[0036] An embodiment of the present application provides a step ladder for foundation pit construction to increase the safety and stability of the step ladder.

[0037] See also Figure 1 as well as Figure 2 The step ladder for foundation pit construction provided in the embodiment of the present application includes:

[0038] See also Figure 3 , the first ladder unit 100 includes a first frame assembly and a first ladder 110 connected to the first frame assembly, the first frame assembly includes a first vertical frame, the first vertical frame includes a first body 121 and a first rotating rod 122 that are coaxial and rotatably connected, the first body 121 is provided with a receiving cavity, the first rotating rod 122 is at least partially located in the receiving cavity, and can be rotated along the axial direction of the first body 121, the first rotating rod 122 is provided with an elastic member 125, the elastic member 125 is located outside the receiving cavity and can reciprocate and extend along the radial direction of the first rotating rod 122 to provide a plug-in body for plugging into the next ladder structure, in some embodiments, the first frame assembly is a rectangular frame structure, in some embodiments, the first frame assembly includes a first vertical frame, the first vertical frame includes a first body 121 and a first rotating rod 122 rotatably connected to the first body 121, the first rotating rod 122 is coaxial with the first body 121, and the first rotating rod 122 extends from the bottom of the first body 121, in some embodiments, the first rotating rod 122 is provided with a handle;

[0039] See also Figure 4, the second step ladder unit 200 is detachably connected to the first step ladder unit 100, and includes a second frame assembly and a second step ladder 210 connected to the second frame assembly, the second frame assembly includes a second vertical frame 220 with a second connecting groove provided therein, the second connecting groove includes a groove body and a plurality of auxiliary grooves connected to the groove body to match the first rotating rod 122, so that the first rotating rod 122 can be inserted into the second connecting groove, the elastic member 125 is provided in the auxiliary groove to provide a plug-in slot for plugging into the upper step ladder structure, in some embodiments, the second frame assembly is a rectangular frame structure, in some embodiments, the second frame assembly includes a second vertical frame 220, and a button is provided in the second connecting groove of the second vertical frame 220, in some embodiments, the auxiliary groove of the second vertical frame 220 is provided with a button passing through the outer wall of the second vertical frame 220, so that the elastic member 125 can be extended and retracted by pressing the button;

[0040] There are multiple first step ladder units 100 and second step ladder units 200, which are arranged in sequence along the vertical direction.

[0041] In some embodiments, the first frame assembly also includes a first horizontal frame 123, the first horizontal frame 123 is provided with a first plug connector, the first vertical frame is provided with a first plug slot, the first horizontal frame 123 can be inserted into the first vertical frame. In some embodiments, the first horizontal frame 123 is arranged in two rows, front and back, and is connected by a horizontal frame connecting rod.

[0042] In some embodiments, a plurality of first vertical frames are provided and connected by a first connecting rod 124 . In some embodiments, two first vertical frames are spaced apart in the same horizontal plane and connected by a first connecting rod 124 .

[0043] In some embodiments, a plurality of second vertical frames 220 are provided and connected by a second connecting rod 230 . In some embodiments, two second vertical frames 220 are spaced apart in the same horizontal plane and connected by a second connecting rod 230 .

[0044] In some embodiments, the second frame assembly includes a second transverse frame 240 , which is provided with a second plug connector, and the second vertical frame 220 is provided with a second plug slot. The second transverse frame 240 can be inserted into the second vertical frame 220 to increase connection stability.

[0045] In some embodiments, the second plug connector of the second horizontal frame 240 includes an upper plug connector located at the top of the second horizontal frame 240 and plugged into the second vertical frame 220, and a lower plug connector located at the bottom of the second horizontal frame 240 and plugged into the first horizontal frame 123. A third plug slot matching the lower plug connector is provided at the top of the first horizontal frame 123 to increase the connection stability.

[0046] In some embodiments, the first step ladder unit 100 and the second step ladder unit 200 are respectively provided with a reinforcement frame 300 , and the reinforcement frame 300 is set at an angle to the first vertical frame / second vertical frame 220 to increase the connection stability.

[0047] In some embodiments, the reinforcement frame 300 is connected between two horizontal frames, or, in some embodiments, the reinforcement frame 300 is connected between two vertical frames, or, in some embodiments, the reinforcement frame 300 is cross-set and connected at the junction of the horizontal frame and the vertical frame.

[0048] In some embodiments, the elastic member 125 is a spring.

[0049] The following is a detailed description of the process of using a step ladder for foundation pit construction in this application:

[0050] When in use, the second step ladder unit 200 is placed at the bottom of the foundation pit, the second horizontal frame 240 is inserted into the second vertical frame 220, and the first step ladder unit 100 is stacked on top. The first rotating rod 122 of the first vertical frame is inserted into the second connecting groove, and the rotating part is supported so that the rotating part drives the first rotating rod 122 to rotate along the first body 121, so that the first rotating rod 122 is clamped in the second connecting groove, and the elastic member 125 is clamped in the auxiliary groove, so as to be stacked in sequence until it reaches the ground until the connection is completed. When disassembling, press the button, the button pushes the elastic member 125 to retract along the radial direction of the first rotating rod 122, and rotate the rotating part so that the rotating part drives the first rotating rod 122 to rotate along the first body 121, the elastic member 125 leaves the auxiliary groove, and the first rotating rod 122 and the second vertical frame 220 are removed.

[0051] The step ladder for foundation pit construction of the present application has at least the following advantages:

[0052] (1) The utility model provides a first rotating rod of the first vertical frame, and the first rotating rod is provided with an elastic member, which is located outside the accommodating cavity and can reciprocate and extend along the radial direction of the first rotating rod. The second vertical frame is provided with two connecting grooves, and the second connecting groove includes a groove body and a plurality of auxiliary grooves connected to the groove body to match the first rotating rod, so that the first rotating rod can be inserted into the second connecting groove. The elastic member is provided in the auxiliary groove to increase the connection effect and increase the connection stability.

[0053] (2) The utility model is provided with a second transverse frame, the second transverse frame is provided with a second plug connector, the second vertical frame is provided with a second plug slot, and the second transverse frame can be inserted into the second vertical frame to further increase the connection effect and increase the connection stability.

[0054] (3) The utility model is provided with a first transverse frame, the first transverse frame is provided with a first plug connector, the first vertical frame is provided with a first plug slot, and the first transverse frame can be inserted into the first vertical frame to further increase the connection effect and increase the connection stability.

[0055] (4) The first step ladder unit and the second step ladder unit are respectively provided with a reinforcement frame, and the reinforcement frame is set at an angle with the first vertical frame / second vertical frame to further increase the connection stability.

[0056] (5) The utility model has reasonable design, simple structure and good practicality.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A step ladder for foundation pit construction, characterized in that: include: A first ladder unit includes a first frame assembly and a first ladder connected to the first frame assembly, the first frame assembly includes a first vertical frame, the first vertical frame includes a first body and a first rotating rod that are coaxially and rotatably connected, the first body has an accommodating cavity, the first rotating rod is at least partially located in the accommodating cavity and can rotate along the axial direction of the first body, and the first rotating rod has an elastic member, the elastic member is located outside the accommodating cavity and can reciprocate and extend radially along the first rotating rod; a second step ladder unit, detachably connected to the first step ladder unit, comprising a second frame assembly and a second step ladder connected to the second frame assembly, the second frame assembly comprising a second vertical frame having a second connecting groove therein, the second connecting groove comprising a groove body and a plurality of auxiliary grooves connected to the groove body to match the first rotating rod so that the first rotating rod can be inserted into the second connecting groove, and the elastic member is disposed in the auxiliary groove; There are a plurality of the first step unit and the second step unit, which are arranged in sequence along the vertical direction.

2. The step ladder for foundation pit construction according to claim 1, characterized in that: The first frame assembly further includes a first transverse frame, the first transverse frame is provided with a first plug connector, the first vertical frame is provided with a first plug slot, and the first transverse frame can be inserted into the first vertical frame.

3. The step ladder for foundation pit construction according to claim 1, characterized in that: There are multiple first vertical frames connected by a first connecting rod.

4. The step ladder for foundation pit construction according to any one of claims 1 to 3, characterized in that: There are multiple second vertical frames connected by a second connecting rod.

5. The step ladder for foundation pit construction according to any one of claims 1 to 3, characterized in that: The second frame assembly includes a second transverse frame, the second transverse frame is provided with a second plug connector, the second vertical frame is provided with a second plug slot, and the second transverse frame can be inserted into the second vertical frame.

6. The step ladder for foundation pit construction according to claim 5, characterized in that: The second plug connector of the second horizontal frame includes an upper plug connector located at the top of the second horizontal frame and plugged into the second vertical frame, and a lower plug connector located at the bottom of the second horizontal frame and plugged into the first horizontal frame. The top of the first horizontal frame is provided with a third plug slot matching the lower plug connector.

7. The step ladder for foundation pit construction according to any one of claims 1 to 3, characterized in that: The first step ladder unit and the second step ladder unit are respectively provided with a reinforcement frame, and the reinforcement frame is set at an angle with the first vertical frame / the second vertical frame.

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