Embedded foundation bolt

Abstract

The utility model relates to an embedded foundation bolt, belongs to the technical field of building appliances, and solves the technical problem that the existing length-adjustable embedded foundation bolt cannot be steplessly adjusted. The embedded foundation bolt comprises a square pipe which is fixedly connected to a base; the square rod is inserted into the square pipe in an up-down sliding mode, and a square plate is fixedly arranged at the top of the square rod; the screw rod is vertically and fixedly connected to the center position of the top surface of the square plate; the top end of the first connecting rod is hinged to the square plate through a first hinge shaft; the bottom end of the second connecting rod is hinged to the base through a second hinge shaft, and the top end of the second connecting rod is hinged to the bottom end of the first connecting rod and locked through a locking assembly. By means of the structure, stepless adjustment of the length of the embedded foundation bolt can be achieved, and therefore the embedded foundation bolt is wider in application range and higher in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction tools, and particularly relates to a pre-embedded anchor bolt. Background Art

[0002] A pre-embedded anchor bolt is a connecting member pre-embedded in a concrete foundation. It is embedded in the concrete during concrete pouring. Therefore, the pre-embedded anchor bolt is relatively firmly connected to the concrete foundation. Specifically, the pre-embedded anchor bolt includes a pre-embedded part and a screw rod provided on the pre-embedded part. The pre-embedded part is buried in the concrete foundation, and the screw rod is exposed outside the concrete foundation to install mechanical components. At present, the pre-embedded parts of the vast majority of pre-embedded anchor bolts are of a fixed structure, such as a bracket or a rod integrally formed with a stud, and they cannot be telescoped. Therefore, for different construction requirements, pre-embedded anchor bolts usually need to be customized to meet specific length requirements, and sometimes even construction workers need to cut or weld the anchor bolts on the construction site.

[0003] In order to solve the technical problem that the length of the existing pre-embedded anchor bolt is not adjustable, the utility model patent with the application number CN202420494556.X discloses a pre-embedded anchor bolt with adjustable length. It realizes length adjustment by means of a square tube sliding on an adjusting rod, and realizes locking by means of a screw rod connected to the wall of the square tube cooperating with an adjusting hole on the adjusting rod. A plurality of the above-mentioned adjusting holes are arranged along the length direction of the adjusting rod.

[0004] Although the length of the pre-embedded anchor bolt disclosed in the above patent can be adjusted, the adjustment is a stepwise adjustment, that is, the length of the pre-embedded anchor bolt can only be adjusted back and forth between several fixed values. Therefore, it cannot achieve stepless length adjustment, and there are still certain limitations in use. Utility Model Content

[0005] The utility model provides a pre-embedded anchor bolt to solve the technical problem that the currently length-adjustable pre-embedded anchor bolt cannot achieve stepless adjustment.

[0006] The utility model is realized by the following technical solutions: A pre-embedded anchor bolt includes:

[0007] A square tube fixedly connected to a base;

[0008] A square rod is inserted into the square tube and slides up and down. A square plate is fixedly provided at the top of the square rod;

[0009] A screw rod is vertically fixedly connected to the center position of the top surface of the square plate;

[0010] A first connecting rod, the top end of which is hinged to the square plate through a first hinge shaft;

[0011] The second connecting rod has its bottom end hinged to the base through a second hinge shaft, and the top end of the second connecting rod is hinged to the bottom end of the first connecting rod and locked by a locking assembly.

[0012] Further, to better implement the present invention, a hinge head is provided at the bottom end of the first connecting rod, and a hinge seat is provided at the top end of the second connecting rod. Both the hinge head and the hinge seat are provided with hinge holes;

[0013] The locking assembly includes a bolt and a nut. The bolt passes through the hinge hole and is screwed with the nut;

[0014] When locking, the nut and the nut of the bolt clamp the hinge head in the hinge seat.

[0015] Further, to better implement the present invention, the square tube and the square rod form a telescopic rod;

[0016] The first connecting rod, the second connecting rod and the locking assembly form a telescopic adjustment assembly;

[0017] Two sets of the telescopic adjustment assemblies are installed between the square plate and the base, and the two sets of telescopic adjustment assemblies are respectively located on the left and right sides of the telescopic rod.

[0018] Further, to better implement the present invention, a scale is also provided on the front outer wall of the square rod, and the scale is used to quantify the telescopic length of the telescopic rod.

[0019] Further, to better implement the present invention, the square tube is integrally formed at the center position of the top surface of the base;

[0020] Outer extension plates are fixedly provided on both the front side wall and the rear side wall of the square tube, and the outer extension plates are located at positions close to the top end of the square tube.

[0021] Further, to better implement the present invention, a through hole for concrete to enter is also opened on the pipe wall of the square tube. The through hole is located at the middle and lower position of the square tube and penetrates the front side wall and the rear side wall of the square tube.

[0022] Further, to better implement the present invention, it further includes:

[0023] A protective cover, screwed to the screw rod, the bottom end of the protective cover abuts against the top surface of the square plate, and the protective cover covers the screw rod.

[0024] Further, to better implement the present invention, the protective cover includes:

[0025] An internally threaded tube;

[0026] A square housing has a through hole opened at the bottom end. The internally threaded pipe is fixedly connected to the outer bottom wall of the square housing, and the through hole corresponds to the inner hole of the internally threaded pipe;

[0027] The internally threaded pipe is screwed onto the screw rod, and the bottom end of the internally threaded pipe abuts against the top surface of the square plate. The square housing covers the screw rod.

[0028] The utility model has the following beneficial effects compared with the prior art:

[0029] The embedded anchor bolt provided by the utility model comprises a square pipe, a square rod, a screw rod, a first connecting rod and a second connecting rod. The square pipe is fixedly connected to the base. The square rod is slidably inserted into the square pipe up and down. A square plate is fixedly provided at the top of the square rod. The screw rod is vertically fixedly connected to the center position of the top surface of the square plate. The top end of the first connecting rod is hinged to the square plate through a first hinge shaft. The bottom end of the second connecting rod is hinged to the base through a second hinge shaft. The top end of the second connecting rod is hinged to the bottom end of the first connecting rod and locked through a locking assembly. The above-mentioned square rod and square pipe form a telescopic rod

[0030] During use, the telescopic rod is adjusted to a suitable length according to the requirements of the construction site. Subsequently, the first connecting rod and the second connecting rod are locked by using the locking assembly. Specifically, by pulling the square rod, the square rod can be telescoped in the square pipe, so as to adjust the length of the telescopic rod composed of the square pipe and the square rod. During adjustment, the first connecting rod and the second connecting rod will deflect. After adjustment, the locking assembly is locked again. At this time, the first connecting rod, the second connecting rod and the telescopic rod form a triangular structure with high structural strength. After adjustment, the above-mentioned square plate, base, telescopic rod, first connecting rod and second connecting rod are all placed in the concrete pouring cavity. Finally, concrete is poured into the cavity. After the concrete dries, the square plate, base, telescopic rod, first connecting rod and second connecting rod are firmly placed in the concrete. The top surface of the above-mentioned square plate is flush with the concrete surface, and the screw rod is exposed outside the concrete for installing mechanical components.

[0031] Through the above structure, the embedded anchor bolt provided by the utility model can be adjusted steplessly so as to adjust the length of the telescopic rod to a suitable position. Compared with the embedded anchor bolts with adjustable length in the prior art, the embedded anchor bolt provided by the utility model has a wider application range and stronger practicability. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of the embedded anchor bolt provided by the embodiment of the present invention;

[0034] Figure 2 is Figure 1 a cross-sectional view of the embedded anchor bolt shown;

[0035] Figure 3 is Figure 1 an exploded view of the embedded anchor bolt shown;

[0036] Figure 4 is a schematic structural diagram of the first connecting rod in the embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of the second connecting rod in the embodiment of the present invention.

[0038] In the figure:

[0039] 100 - square tube, 110 - extended plate, 120 - through hole, 200 - base, 300 - square rod, 310 - scale, 400 - square plate, 500 - screw rod, 600 - first connecting rod, 610 - first hinge shaft, 620 - hinge joint, 700 - second connecting rod, 710 - second hinge shaft, 720 - hinge seat, 800 - locking assembly, 810 - bolt, 820 - nut, 900 - protective cover, 910 - internally threaded tube, 920 - square housing. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention.

[0041] Embodiment:

[0042] As Figures 1 - 5 shown, the embedded anchor bolt 810 provided by the present invention includes a square tube 100, a square rod 300, a screw rod 500, a first connecting rod 600, and a second connecting rod 700, wherein:

[0043] The square tube 100 is a steel pipe, which is welded and fixed on the base 200. Of course, the square tube 100 can also be integrally formed with the base 200, and the axis of the square tube 100 is vertical. Optionally, the above-mentioned base 200 is a steel plate.

[0044] The square rod 300 is inserted into the square tube 100 in a vertically sliding manner. At the top of the square rod 300, a square plate 400 is fixedly connected or integrally formed. Both the square rod 300 and the square plate 400 are steel structural members. Moreover, the axis of the square rod 300 is vertical. The screw rod 500 is vertically welded and fixed or integrally formed at the center position of the top surface of the square plate 400. The above-mentioned square rod 300 and square tube 100 form a telescopic rod

[0045] The top end of the first connecting rod 600 is hinged to the square plate 400 through the first hinge shaft 610. The bottom end of the second connecting rod 700 is hinged to the base 200 through the second hinge shaft 710. The top end of the second connecting rod 700 is hinged to the bottom end of the first connecting rod 600 and locked by the locking assembly 800. The first connecting rod 600 and the second connecting rod 700 are also steel structural members.

[0046] During use, the telescopic rod is adjusted to a suitable length according to the requirements of the construction site. Subsequently, the first connecting rod 600 and the second connecting rod 700 are locked by the locking assembly 800. Specifically, by pulling the square rod 300, the square rod 300 can be telescoped in the square tube 100, thereby adjusting the length of the telescopic rod composed of the square tube 100 and the square rod 300. During adjustment, the first connecting rod 600 and the second connecting rod 700 will deflect. After adjustment, the locking assembly 800 is locked again. At this time, the first connecting rod 600, the second connecting rod 700 and the telescopic rod form a triangular structure with high structural strength. After adjustment, the above-mentioned square plate 400, base 200, telescopic rod, first connecting rod 600 and second connecting rod 700 are all placed in the concrete pouring cavity. Finally, concrete is poured into the cavity. After the concrete dries, the square plate 400, base 200, telescopic rod, first connecting rod 600 and second connecting rod 700 are firmly placed in the concrete, and the top surface of the above-mentioned square plate 400 is flush with the concrete surface, and the screw rod 500 is exposed outside the concrete for installing mechanical components.

[0047] Through the above structure, the embedded anchor bolt 810 provided by the present utility model can be adjusted steplessly, so that it can be adjusted to any length within the specified range, so as to adjust the length of the telescopic rod to a suitable value. Compared with the existing embedded anchor bolt 810 with adjustable length, the embedded anchor bolt 810 provided by the present utility model has a wider application range and stronger practicability.

[0048] Optionally, a hinge joint 620 is provided at the bottom end of the first link 600, and a hinge seat 720 is provided at the top end of the second link 700. The hinge joint 620 and the hinge seat 720 are both provided with hinge holes. Specifically, the hinge seat 720 includes two parallel wing plates, and the hinge joint 620 is rotatably placed between the two wing plates. The hinge hole penetrates through the hinge joint 620 and the two wing plates.

[0049] The locking assembly 800 includes a bolt 810 and a nut 820. The bolt 810 passes through the hinge hole and is screwed with the nut 820. When locked, the nut 820 and the nut of the bolt 810 clamp the hinge joint 620 in the hinge seat 720. When the length of the telescopic rod needs to be adjusted, the locking assembly 800 is unlocked, specifically by loosening the nut 820. In this case, the bolt 810 not only serves as a part of the locking assembly 800, but also serves as the hinge shaft for the hinge connection between the first link 600 and the second link 700. The locking force of the locking assembly 800 comes from the frictional force between the nut 820, the hinge joint 620, the hinge seat 720, and the nut of the bolt 810.

[0050] Optionally, the first link 600, the second link 700, and the locking assembly 800 in this embodiment form a telescopic adjustment assembly. Two sets of telescopic adjustment assemblies are installed between the square plate 400 and the base 200, and the two sets of telescopic adjustment assemblies are respectively located on the left and right sides of the telescopic rod. In this way, the structural strength of the Zengge embedded anchor bolt 810 can be further enhanced.

[0051] In order to facilitate the user to quantitatively adjust the telescopic length of the telescopic rod, in this embodiment, a scale 310 is further provided on the front outer wall of the square rod 300.

[0052] An optional implementation manner of this embodiment is as follows: The square tube 100 is integrally formed at the center position of the top surface of the base 200. Outer extension plates 110 are fixedly provided on both the front side wall and the rear side wall of the square tube 100, and the outer extension plates 110 are located near the top end of the square tube 100. The outer extension plates 110 can further enhance the frictional force between the telescopic rod and the concrete, so that the embedded anchor bolt 810 is more firmly embedded in the concrete.

[0053] More preferably, a through hole 120 for the concrete to enter is further provided on the pipe wall of the square tube 100. The through hole 120 is located at the middle and lower position of the square tube 100 and penetrates through the front side wall and the rear side wall of the square tube 100. In this way, the concrete will be able to enter the square tube 100 through the through hole 120 to fill the hollow cavity inside the square tube 100, and further make the embedded anchor bolt 810 more firmly embedded in the concrete.

[0054] An alternative implementation of this embodiment is as follows: A protective cover is further sleeved outside the screw 500. When the screw 500 is not in use, the protective cover is used to cover the screw 500 to protect the screw 500. When the screw 500 needs to be used, the protective cover can be removed. Specifically, the protective cover is screwed to the above-mentioned screw 500 and sleeved outside the screw 500, and the top end of the protective cover abuts against the top surface of the square plate 400.

[0055] Optionally, the protective cover in this embodiment includes an internally threaded pipe and a square housing. A through hole is provided at the bottom end of the square housing. The internally threaded pipe is fixedly welded or integrally formed on the outer bottom wall of the square housing. The through hole corresponds to the inner hole of the internally threaded pipe. The internally threaded pipe is screwed to the screw 500, and the bottom end of the internally threaded pipe abuts against the top surface of the square plate 400. The square housing is sleeved outside the screw 500.

[0056] As described above, only the specific implementation manners of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope recorded in the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pre-buried anchor bolt (810), characterized in that: include: A square tube (100) is fixedly connected to a base (200); A square rod (300) is inserted into the square tube (100) in a sliding manner up and down, and a square plate (400) is fixedly provided on the top of the square rod (300); A screw rod (500) is vertically fixed to the center of the top surface of the square plate (400); A first connecting rod (600), the top end of which is hinged to the square plate (400) via a first hinge shaft (610); The second connecting rod (700) has a bottom end hinged to the base (200) via a second hinge shaft (710), and the top end of the second connecting rod (700) is hinged to the bottom end of the first connecting rod (600) and is locked via a locking assembly (800).

2. The embedded anchor bolt (810) according to claim 1, characterized in that: A hinge joint (620) is provided at the bottom end of the first connecting rod (600), and a hinge seat (720) is provided at the top end of the second connecting rod (700), and both the hinge joint (620) and the hinge seat (720) are provided with hinge holes; The locking assembly (800) comprises a bolt (810) and a nut (820), wherein the bolt (810) passes through the hinge hole and is threadedly connected to the nut (820); When tightened, the nut (820) and the nut of the bolt (810) clamp the hinged head (620) in the hinged seat (720).

3. The embedded anchor bolt (810) according to claim 2, characterized in that: The square tube (100) and the square rod (300) form a telescopic rod; The first connecting rod (600), the second connecting rod (700) and the locking assembly (800) constitute a telescopic adjustment assembly; Two groups of telescopic adjustment components are installed between the square plate (400) and the base (200), and the two groups of telescopic adjustment components are respectively located on the left and right sides of the telescopic rod.

4. The embedded anchor bolt (810) according to claim 3, characterized in that: A scale (310) is also provided on the front outer wall of the square rod (300), and the scale (310) is used to quantify the telescopic length of the telescopic rod.

5. The embedded anchor bolt (810) according to any one of claims 1 to 4, characterized in that: The square tube (100) is integrally formed and arranged at the center of the top surface of the base (200); An outwardly extending plate (110) is fixedly provided on the front side wall and the rear side wall of the square tube (100), and the outwardly extending plate (110) is located close to the top end of the square tube (100).

6. The embedded anchor bolt (810) according to claim 5, characterized in that: A through opening (120) for concrete to enter is also provided on the tube wall of the square tube (100). The through opening (120) is located at the middle and lower position of the square tube (100) and penetrates the front side wall and the rear side wall of the square tube (100).

7. The embedded anchor bolt (810) according to any one of claims 1 to 4, characterized in that: Also includes: The protective cover (900) is threadedly connected to the screw rod (500), the bottom end of the protective cover (900) abuts against the top surface of the square plate (400), and the protective cover (900) is arranged outside the screw rod (500).

8. The embedded anchor bolt (810) according to claim 7, characterized in that: The protective cover (900) comprises: Internally threaded pipe (910); A square cover shell (920) has a through hole at the bottom end, the internally threaded tube (910) is fixedly connected to the outer bottom wall of the square cover shell (920), and the through hole corresponds to the inner hole of the internally threaded tube (910); The internal threaded tube (910) is threadedly connected to the screw rod (500), and the bottom end of the internal threaded tube (910) is in contact with the top surface of the square plate (400), and the square cover (920) is disposed outside the screw rod (500).

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