Building construction foundation pit guardrail

Abstract

The utility model discloses a building construction foundation pit guardrail, and relates to the field of guardrails, the building construction foundation pit guardrail comprises a guardrail main body and guardrail bases connected to the two ends of the guardrail main body, and first fixing cones facing the ground are arranged on the guardrail bases; a containing cavity is formed in the first fixing cone, and at least one pair of sliding ways is arranged on the peripheral face of the first fixing cone. The slide way is communicated with the accommodating cavity; a second fixing cone is connected in each slide way in a sliding manner; a lifting column is connected to the handrail base in a sliding mode, when the lifting column is in a first height state, the heads of the second fixing cones are located in the sliding ways, and when the lifting column is in a second height state, the bottom of the lifting column abuts against the tails of all the second fixing cones so that the heads of the second fixing cones can stretch out of the sliding ways. After the first fixing cones are inserted into the soil by enough depth, the lifting columns are pressed to move downwards to extrude the second fixing cones to move towards the two sides, so that the heads of the second fixing cones are horizontally inserted into the soil, and the stability of the guardrail is remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of guardrail technology, specifically relating to a guardrail for a construction pit. Background Technology

[0002] Construction pit guardrails are designed to ensure the safety of construction site operations, prevent personnel or objects from falling into the pit, reduce accidents, and protect the safety of construction workers. Pits are the excavated areas of underground structures in construction projects; they are typically quite deep and have relatively complex surrounding environments. Therefore, effective safety measures are necessary, and pit guardrails are a key protective measure.

[0003] However, some existing construction pit guardrails are typically placed directly on the ground to protect the area around the pit, without considering that the guardrails may be unstable and tilt or collapse under external forces. This not only fails to provide effective protection but can also directly cause personal injury or equipment damage. Therefore, a new type of construction pit guardrail is proposed to solve the above problems. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a construction pit guardrail that significantly improves the stability of the guardrail.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A construction pit guardrail includes a guardrail body and guardrail bases connected to both ends of the guardrail body. A first fixed cone facing the ground is provided on the guardrail base. The first fixed cone has an internal receiving cavity and at least one pair of sliding tracks extending radially along its outer circumference. The sliding tracks communicate with the receiving cavity. A second fixed cone is slidably connected to each of the sliding tracks. A lifting column with its bottom capable of inserting into the receiving cavity is slidably connected to the guardrail base. When the lifting column is at a first height, the head of the second fixed cone is located within the sliding track. When the lifting column is at a second height, the bottom of the lifting column abuts against the tails of all the second fixed cones, and the head of the second fixed cone extends out of the sliding track.

[0007] Optionally, a connecting plate is provided at the tail of the second fixed cone; the connecting plate extends downward from the end of the second fixed cone toward the slide rail until it is slidably connected to the bottom of the receiving cavity; a return spring is provided between the connecting plate and the side wall of the receiving cavity.

[0008] Optionally, the tail of the second fixed cone is an inclined surface, and the inclined surfaces of each pair of second fixed cones gradually approach each other from top to bottom.

[0009] Optionally, the bottom of the landing column is integrally formed with an extrusion column; the lower part of the extrusion column tapers to form an inverted frustum structure; when the landing column is in the second height state, the extrusion column presses against the tail of all the second fixed cones.

[0010] Optionally, the railing base includes a post, a support plate, and a support rod, with the post vertically mounted on the support plate and the support rod connected at an angle between the post and the support plate.

[0011] Optionally, a fixing sleeve is provided on the post; an L-shaped insert is provided on the main body of the railing; the L-shaped insert is detachably inserted into the fixing sleeve and can rotate within the fixing sleeve.

[0012] Optionally, the main body of the railing includes edge railings, center railings, and crossbars; two edge railings are connected as a whole by two crossbars distributed vertically; several center railings are detachably connected to the crossbars by limiting components.

[0013] Optionally, the limiting assembly includes a limiting ring and a fixing bolt. The limiting ring has an opening and two outwardly extending semi-circular ear plates are provided along the edge of the opening. The limiting ring is slidably connected to the crossbar, and the fixing bolt is connected to the two semi-circular ear plates. The central rail is inserted between the two semi-circular ear plates. When the fixing bolt is tightened, the semi-circular ear plates abut against the outer periphery of the central rail in a pressing manner.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, the first fixed cone can limit the base of the railing. After the first fixed cone is inserted into the soil to a sufficient depth, the lifting column is pressed to move the lifting column downward. After the lifting column moves downward, it squeezes the second fixed cone to move to both sides, so that the head of the second fixed cone is inserted into the soil in a horizontal manner, thereby further improving the stability and stability of this application.

[0016] (2) In this utility model, the edge railing is connected to the column by the fixing sleeve and L-shaped insert. After the horizontal bar is connected to the edge railing, the center railing is installed on the horizontal bar by the limiting component. The limiting component includes a limiting ring and a fixing bolt. The limiting ring is provided with an opening. The edge of the opening is provided with two outwardly extending semi-circular ear plates. By tightening the fixing bolt, the limiting ring stops on the horizontal bar. At the same time, the semi-circular ear plates hug the center railing. The user can reasonably set the number of center railings and their installation position on the horizontal bar according to the usage requirements. When some center railings are damaged due to accidents and cannot meet the usage requirements, the damaged center railings can be disassembled and replaced, which improves the utilization rate of materials and thus enhances the flexibility of this application. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a construction pit guardrail proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of a guardrail for a construction pit, as proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the first fixed cone of a construction pit guardrail proposed in this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0021] The markings in the diagram are as follows: 1 is the main body of the railing, 11 is the edge railing, 12 is the center railing, 13 is the crossbar, 14 is the limiting ring, 15 is the fixing bolt, 16 is the semi-circular ear plate, 17 is the L-shaped insert, 2 is the railing base, 21 is the post, 22 is the bearing plate, 23 is the support rod, 24 is the fixing sleeve, 3 is the first fixing cone, 31 is the receiving cavity, 32 is the slide rail, 4 is the second fixing cone, 41 is the connecting plate, 42 is the return spring, 5 is the lifting post, and 51 is the squeezing post. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] It should be noted that terms such as "upper," "lower," "left," "right," "front," and "rear" used in this utility model are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model. The terms "first," "second," etc., in this utility model specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such structures can be interchanged where appropriate. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0024] like Figure 1-4 As shown, a construction pit guardrail includes a guardrail body 1 and guardrail bases 2 connected to both ends of the guardrail body 1. A first fixed cone 3 facing the ground is provided on the guardrail base 2.

[0025] In this application, as Figure 1As shown, the railing base 2 includes a column 21, a bearing plate 22, and a support rod 23. The column 21 is vertically mounted on the bearing plate 22, and the support rod 23 is connected between the column 21 and the bearing plate 22 at an angle. That is, the figure enclosed by the column 21, the bearing plate 22, and the support rod 23 is a right triangle. The support rod 23 has a fixing effect on the column 21 and the bearing plate 22, making the connection between the column 21 and the bearing plate 22 more secure.

[0026] like Figure 3 and Figure 4 As shown, the first fixed cone 3 has an internal accommodating cavity 31 and at least one pair of slides 32 extending radially on its outer circumferential surface; the slides 32 communicate with the accommodating cavity 31; the slides 32 are perpendicular to the central axis of the first fixed cone 3; each slide 32 is slidably connected to a second fixed cone 4; the arrangement of the slides 32 can limit the movement direction of the second fixed cone 4, and under normal circumstances, the size of the second fixed cone 4 is smaller than that of the first fixed cone 3.

[0027] A lifting column 5 is slidably inserted on the bearing plate 22. The bottom of the lifting column 5 can be inserted into the receiving cavity 31. The bearing plate 22 can limit the lifting column 5, that is, prevent the lifting column 5 from detaching from the bearing plate 22. The specific limiting method can refer to the existing technology. When the lifting column 5 is in the first height state, the head of the second fixing cone 4 is located in the slide 32. When the lifting column 5 is in the second height state, the bottom of the lifting column 5 abuts against the tail of all the second fixing cones 4, and the head of the second fixing cone 4 is in the state of extending out of the slide 32. That is, when the lifting column 5 moves down from the first height state to the second height state, it can squeeze the second fixing cone 4 to move to both sides, so that the second fixing cone 4 can be fixed in the soil again, improving the overall stability of the guardrail.

[0028] Furthermore, a connecting plate 41 is provided at the tail of the second fixed cone 4; the connecting plate 41 extends downward from the end of the second fixed cone 4 toward the slide 32 until it is slidably connected to the bottom of the receiving cavity 31; specifically, a slide groove can be opened at the bottom of the receiving cavity 31, and the bottom of the connecting plate 41 is slidably connected to the slide groove (not shown in the figure). The slide groove limits the connecting plate 41, and the connecting plate 41 will move along the direction of the slide groove when it moves. The connecting plate 41 corresponds one-to-one with the second fixed cone 4; a return spring 42 is provided between the connecting plate 41 and the side wall of the receiving cavity 31. That is, when the head of the second fixed cone 4 extends out of the slide 32, the return spring 42 is in a compressed state. When the lifting column 5 moves upward to release the compression on the second fixed cone 4, the return spring 42 can drive the head of the second fixed cone 4 to retract into the slide 32, thereby facilitating the removal of the entire guardrail from the soil.

[0029] To ensure the squeezing effect between the landing column 5 and the second fixed cone 4, the tail of the second fixed cone 4 is an inclined surface. The inclined surfaces of each pair of second fixed cones 4 gradually approach each other from top to bottom. The bottom of the landing column 5 is integrally formed with a squeezing column 51. The lower part of the squeezing column 51 gradually narrows to form an inverted frustum structure. When the landing column 5 is in the second height state, the squeezing column 51 squeezes against the tail of all the second fixed cones 4.

[0030] In this embodiment, a fixing sleeve 24 is provided on the post 21; an L-shaped insert post 17 is provided on the railing body 1; the L-shaped insert post 17 is detachably inserted into the fixing sleeve 24 and can rotate within the fixing sleeve 24, that is, the railing body 1 can be limited to the post 21 in any direction, thus facilitating use.

[0031] In this embodiment, the main body of the railing 1 includes edge railings 11, center railings 12, and crossbars 13; two edge railings 11 are connected into a whole by two crossbars 13 distributed vertically; several center railings 12 are detachably connected to the crossbars 13 by limiting components, thereby facilitating disassembly and transportation.

[0032] The limiting assembly includes a limiting ring 14 and a fixing bolt 15. The limiting ring 14 has an opening, and two outwardly extending semi-circular ear plates 16 are provided along the edge of the opening. The limiting ring 14 is slidably connected to the crossbar 13, and the fixing bolt 15 is connected to the two semi-circular ear plates 16. The central railing 12 is inserted between the two semi-circular ear plates 16, that is, the semi-circular ear plates 16 can surround the outer periphery of the central railing 12. When the fixing bolt 15 is tightened, the semi-circular ear plates 16 abut against the outer periphery of the central railing 12 in a squeezing manner, so that the limiting assembly and the central railing 12 are connected as a whole. In addition, when the fixing bolt 15 is continuously tightened, the gap of the opening of the limiting ring 14 is also reduced to a certain extent, so that the limiting ring 14 can stop at the required position of the crossbar 13.

[0033] Working principle: The user fixes the first fixing cone 3 to the outside of the construction pit by confirming the position. When the first fixing cone 3 is fully embedded in the soil, the user can press down on the lifting column 5. As the lifting column 5 moves downward, it can drive the squeezing column 51 to move. Then, as the squeezing column 51 moves, it can drive the second fixing cone 4 to move, thereby further fixing it in the soil and improving the overall stability of this application.

[0034] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0035] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A construction site trench guard characterised in that, The railing base (2) is provided with a first fixing cone (3) facing the ground; the inside of the first fixing cone (3) is provided with a containing cavity (31), and the outer circumferential surface is provided with at least one pair of sliding grooves (32) extending in the radial direction; the sliding grooves (32) are communicated with the containing cavity (31); each sliding groove (32) is slidably connected with a second fixing cone (4); the railing base (2) is slidably connected with a lifting column (5) whose bottom can be inserted into the containing cavity (31); when the lifting column (5) is in a first height state, the head of the second fixing cone (4) is located in the sliding groove (32); when the lifting column (5) is in a second height state, the bottom of the lifting column (5) abuts against the tail of all the second fixing cones (4), and the head of the second fixing cone (4) is in a state of extending out of the sliding groove (32).

2. The construction excavation fence according to claim 1, wherein The tail of the second fixing cone (4) is provided with a connecting plate (41); the end of the connecting plate (41) away from the second fixing cone (4) extends downwards to the lower part of the sliding groove (32) until being slidably connected to the bottom of the containing cavity (31); the connecting plate (41) and the side wall of the containing cavity (31) are provided with a reset spring (42).

3. The construction excavation fence according to claim 1, wherein The tail of the second fixing cone (4) is an inclined surface, and the inclined surfaces of each pair of second fixing cones (4) gradually approach from top to bottom.

4. The construction excavation fence according to claim 1, wherein The bottom of the lifting column (5) is integrally formed with an extrusion column (51); the lower part of the extrusion column (51) is tapered to form a reverse circular table structure; when the lifting column (5) is in the second height state, the extrusion column (51) extrudes all the tails of the second fixing cones (4).

5. The construction excavation barrier according to claim 1, wherein The railing base (2) comprises a stand column (21), a bearing plate (22) and a support rod (23); the stand column (21) is vertically arranged on the bearing plate (22); the support rod (23) is connected between the stand column (21) and the bearing plate (22) in an inclined manner.

6. The construction excavation barrier according to claim 5, wherein The stand column (21) is provided with a fixing sleeve (24); the railing body (1) is provided with an L-shaped insertion column (17); the L-shaped insertion column (17) is detachably inserted into the fixing sleeve (24) and can rotate in the fixing sleeve (24).

7. The construction excavation barrier according to claim 1, wherein The railing body (1) comprises edge railings (11), center railings (12) and cross bars (13); two edge railings (11) are connected as a whole by two cross bars (13) arranged in an up-down manner; a plurality of center railings (12) are detachably connected to the cross bars (13) by limiting assemblies.

8. The construction excavation barrier according to claim 7, wherein The limiting assembly comprises a limiting ring (14) and a fixing bolt (15), the limiting ring (14) is provided with an opening and two outwardly extending semicircular lugs (16) along the edge of the opening, the limiting ring (14) is slidingly connected on the crossbar (13), the fixing bolt (15) is connected on the two semicircular lugs (16), the center rail (12) is inserted between the two semicircular lugs (16), and when the fixing bolt (15) is in a tightened state, the semicircular lugs (16) abut against the outer periphery of the center rail (12) in a form of extrusion.

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