Fixing device for steel casing of cast-in-situ bored pile

Abstract

The utility model relates to the technical field of cast-in-situ bored piles, and provides a cast-in-situ bored pile steel casing fixing device. A plurality of hanging holes are symmetrically formed in the top of a steel casing, a fixing device is used for limiting relative movement of the hanging holes and a soil layer on the periphery of the steel casing, a steel lifting hook is connected with the hanging holes, then the steel lifting hook is connected with a steel cone through a steel wire rope, and the steel cone is directly inserted into the soil layer on the periphery of the steel casing, so that deviation and sinking of the steel casing can be effectively prevented; the two ends of the steel wire rope form steel wire rings through buckles and are connected with the steel lifting hook and the steel cone respectively, the buckles are provided with limiting holes in threaded rods, the two ends of each limiting hole are sleeved with an upper nut and a lower nut respectively, and after the ends of the steel wire rope penetrate through the limiting holes to form the steel wire rings, the upper nuts and the lower nuts can be quickly tightened. The upper nut and the lower nut press the steel wire rope penetrating through the limiting hole, so that the size of the steel wire ring can be quickly adjusted, namely the distance between the steel lifting hook and the steel cone can be quickly adjusted, the steel cone can be conveniently inserted into a more stable soil layer, and the fixing effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bored cast-in-place piles, in particular to a fixing device for a steel casing of a bored cast-in-place pile. Background Art

[0002] In order to effectively relieve the increasing pressure on the urban traffic network, the application of urban road underpass tunnels is becoming more and more extensive. In tunnel construction, in order to effectively relieve the pressure of buildings on the foundation, the application of bored cast-in-place piles in projects is also becoming more and more extensive. During the construction of traditional bored piles, the casing is usually buried by digging a trench with an excavator and then covering it with clay. When the geology is relatively soft, the groundwater level is relatively high, the shape of the trench dug during the casing burial is not standard, or the soil cannot be compacted during the burial, it is very easy to cause the casing to deviate and sink, thus affecting the quality of the pile foundation and construction safety.

[0003] Therefore, it is urgent to develop a fixing device for a steel casing of a bored cast-in-place pile to overcome the deficiencies of the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and provide a fixing device for a steel casing of a bored cast-in-place pile to avoid the deviation and sinking of the steel casing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: [[ID=2I]]

[0006] A fixing device for a steel casing of a bored cast-in-place pile includes a hanging hole opened at the top of the steel casing and a fixing device detachably connected to the hanging hole; the fixing device includes a steel hook detachably connected to the hanging hole, a steel wire rope with one end detachably connected to the steel hook, and a steel cone detachably connected to the free end of the steel wire rope; both ends of the steel wire rope form a wire loop through a buckle and are respectively connected to the steel hook and the steel cone. The steel cone is inserted into the soil layer outside the steel casing. There are at least two hanging holes symmetrically arranged at the top of the steel casing, and at least one fixing device is connected to each hanging hole.

[0007] Preferably, the lower end of the steel hook gradually converges inward to form a hook, the end of the hook penetrates into the hanging hole, and a first lifting lug is arranged at the upper end of the steel hook, and the first lifting lug is connected to the steel wire rope.

[0008] Preferably, a steel plate is arranged at the top of the steel cone, a second lifting lug is arranged at the top of the steel plate, a cone head is arranged at the bottom of the steel cone, the bottom of the cone head gradually converges to a point, and the second lifting lug is connected to the steel wire rope.

[0009] Preferably, the buckle includes a screw rod, an upper nut and a lower nut respectively sleeved at both ends of the screw rod, and a limiting hole penetrating through the screw rod. The upper nut and the lower nut are arranged at both ends of the limiting hole.

[0010] Preferably, there are four hanging holes, and the four hanging holes are arranged at equal distances around the axis of the steel casing. A set of fixing devices are connected to each hanging hole.

[0011] The fixing device for the steel casing of the bored cast-in-place pile disclosed by the present utility model has the following beneficial effects.

[0012] First, in the device of the present utility model, a plurality of symmetrically arranged hanging holes are opened at the top of the steel casing. The fixing device is used to restrict the relative movement between the hanging holes and the soil layer outside the steel casing. The steel hook is connected to the hanging hole, and then the steel hook and the steel cone are connected by a steel wire rope. The steel cone is directly inserted into the soil layer outside the steel casing, which can effectively prevent the steel casing from deviating and sinking.

[0013] Second, both ends of the steel wire rope of the present utility model form steel wire loops through buckles and are respectively connected to the steel hook and the steel cone. The buckle is provided with a limit hole on the screw rod, and a upper nut and a lower nut are respectively sleeved at both ends of the limit hole. When the end of the steel wire rope passes through the limit hole to form a steel wire loop, the upper nut and the lower nut can be quickly tightened, so that the upper nut and the lower nut compress the steel wire rope passing through the limit hole, thereby being able to quickly adjust the size of the steel wire loop, which not only facilitates the connection of the steel wire rope with other components but also can quickly adjust the distance between the steel hook and the steel cone, facilitating the insertion of the steel cone into a more stable soil layer, thereby improving the fixing effect of the device. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 It is a front view structural schematic diagram of the present utility model.

[0016] Figure 3 It is a top view structural schematic diagram of the present utility model.

[0017] Figure 4 It is Figure 1 a partial enlarged schematic diagram at A in

[0018] Figure 5 It is a schematic diagram of the buckle structure of the present utility model.

[0019] In the drawings: 1. Steel casing; 11. Hanging hole; 2. Steel hook; 21. First lifting lug; 3. Steel wire rope; 4. Buckle; 41. Upper nut; 42. Lower nut; 43. Screw rod; 44. Limit hole; 5. Steel cone; 51. Steel plate; 52. Second lifting lug; 53. Cone head. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Embodiment

[0022] The present utility model discloses a fixing device for a steel casing of a bored cast-in-place pile, which is used to avoid the scenarios of steel casing deviation and sinking.

[0023] Refer to Figure 1 , a fixing device for a steel casing of a bored cast-in-place pile, includes a hanging hole 11 opened at the top of the steel casing 1 and a fixing device detachably connected to the hanging hole 11; as Figure 4 shown, the fixing device includes a steel hook 2 detachably connected to the hanging hole 11, a steel wire rope 3 with one end detachably connected to the steel hook 2, and a steel cone 5 detachably connected to the free end of the steel wire rope 3; both ends of the steel wire rope 3 form a wire loop through a buckle 4 and are respectively connected to the steel hook 2 and the steel cone 5. The steel cone 5 is inserted into the soil layer outside the steel casing 1. As Figure 3 shown, four hanging holes 11 with a diameter of 50 mm are drilled at 200 mm below the top of the steel casing 1. The four hanging holes 11 are equidistantly arranged around the axis of the steel casing 1. A set of fixing devices are connected to each hanging hole 11. By opening a number of symmetrically arranged hanging holes 11 at the top of the steel casing 1, the relative movement between the hanging holes 11 and the soil layer outside the steel casing 1 is restricted by using the fixing device. The steel hook 2 is connected to the hanging hole 11, and then the steel hook 2 and the steel cone 5 are connected through the steel wire rope 3. The steel cone 5 is directly inserted into the soil layer outside the steel casing 1, which can effectively prevent the steel casing 1 from deviating and sinking. The steel hook 2 is made of a steel bar with a diameter of 40 mm, the diameter of the steel wire rope 3 is 30 mm, and the length of the steel wire rope 3 is generally 3 - 5 m according to actual selection.

[0024] Specifically, as Figure 2 and Figure 4 shown, the lower end of the steel hook 2 gradually converges inward to form a hook, and the end of the hook penetrates into the hanging hole 11. A first lifting ear 21 is welded to the upper end of the steel hook 2, and the first lifting ear 21 is connected to the steel wire rope 3. Specifically, the first lifting ear 21 is connected to the wire loop formed by the end of the steel wire rope 3. A steel plate 51 is welded to the top of the steel cone 5, a second lifting ear 52 is welded to the top of the steel plate 51, a conical head 53 is integrally provided at the bottom of the steel cone 5, the bottom of the conical head 53 gradually converges to a point, the bottom angle of the conical head 53 is 30°, the second lifting ear 52 is connected to the steel wire rope 3, and the steel plate 51 is circular to facilitate the insertion of the steel cone 5 into the soil layer.

[0025] As shown Figure 5 in the figure, the buckle 4 includes a screw rod 43, an upper nut 41 and a lower nut 42 sleeved at both ends of the screw rod 43 respectively, and a limiting hole 44 penetrating through the screw rod 43. The limiting hole 44 is an oblong hole with a length of 80 mm and a width of 35 mm. The upper nut 41 and the lower nut 42 are placed at both ends of the limiting hole 44. As shown Figure 4 in the figure, after one end of the steel wire rope 3 first passes through the limiting hole 44, it passes through the first lifting lug 21, and then passes through the first lifting lug 21 and passes through the limiting hole 44 again. At this time, the upper nut 41 and the lower nut 42 are tightened so that the upper nut 41 and the lower nut 42 press the steel wire rope 3. At this time, the first lifting lug 21 and the steel wire rope 3 are connected together. Similarly, after one end of the steel wire rope 3 first passes through the limiting hole 44, it passes through the second lifting lug 52, and then passes through the second lifting lug 52 and passes through the limiting hole 44 again. At this time, the upper nut 41 and the lower nut 42 are tightened so that the upper nut 41 and the lower nut 42 press the steel wire rope 3. At this time, the second lifting lug 52 is also connected to the steel wire rope 3. Both ends of the steel wire rope 3 form wire loops through the buckle 4 and are respectively connected to the steel hook 2 and the steel cone 5. The buckle 4 is formed by opening a limiting hole 44 in the screw rod 43, and the upper nut 41 and the lower nut 42 are sleeved at both ends of the limiting hole 44 respectively. When the end of the steel wire rope 3 passes through the limiting hole 44 to form a wire loop, the upper nut 41 and the lower nut 42 can be quickly tightened so that the upper nut 41 and the lower nut 42 press the steel wire rope 3 passing through the limiting hole 44, so that the size of the wire loop can be quickly adjusted, which not only facilitates the connection of the steel wire rope 3 with other components but also can quickly adjust the distance between the steel hook 2 and the steel cone 5, and is convenient for inserting the steel cone 5 into a more stable soil layer, thereby improving the fixing effect of the device.

[0026] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution can be the substitution of part of the structure, device, and method steps, or the complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. A fixing device for steel casing of bored cast-in-place pile, characterized in that, It includes a hanging hole (11) opened at the top of the steel casing (1) and a fixing device detachably connected to the hanging hole (11); the fixing device includes a steel hook (2) detachably connected to the hanging hole (11), a steel wire rope (3) with one end detachably connected to the steel hook (2), and a steel cone (5) detachably connected to the free end of the steel wire rope (3); both ends of the steel wire rope (3) form a steel wire loop through a buckle (4) and are respectively connected to the steel hook (2) and the steel cone (5), the steel cone (5) is inserted into the soil layer outside the steel casing (1), there are at least two hanging holes (11) and they are symmetrically arranged at the top of the steel casing (1), and at least one fixing device is connected to each hanging hole (11).

2. The steel casing fixing device for bored cast-in-place piles according to claim 1, characterized in that, The lower end of the steel hook (2) gradually converges inward to form a hook, the end of the hook penetrates into the hanging hole (11), and a first lifting lug (21) is provided at the upper end of the steel hook (2), and the first lifting lug (21) is connected to the steel wire rope (3).

3. The steel casing fixing device for bored cast-in-place piles according to claim 1, characterized in that, A steel plate (51) is provided at the top of the steel cone (5), a second lifting lug (52) is provided at the top of the steel plate (51), a cone head (53) is provided at the bottom of the steel cone (5), the bottom of the cone head (53) gradually converges to a point, and the second lifting lug (52) is connected to the steel wire rope (3).

4. A fixing device for a steel casing of a bored cast-in-place pile according to claim 1, characterized in that, The buckle (4) includes a screw rod (43), an upper nut (41) and a lower nut (42) respectively sleeved at both ends of the screw rod (43), and a limiting hole (44) penetrating through the screw rod (43), and the upper nut (41) and the lower nut (42) are placed at both ends of the limiting hole (44).

5. The steel casing fixing device for bored cast-in-place piles according to claim 1, characterized in that, There are four hanging holes (11), and the four hanging holes (11) are equidistantly arranged around the axis of the steel casing (1), and a set of fixing devices is connected to each hanging hole (11).

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