Pressing device for reinforcement cage of rear joint bar press-grouting pile

Abstract

The utility model relates to a downward pressing device for a reinforcement cage of a rear joint bar press-grouting pile, which is used for assisting downward insertion of the reinforcement cage and comprises a connecting steel plate, a fixed connecting piece, a downward insertion steel pipe and a vibrating plate. A plurality of first through holes are formed in the connecting steel plate, and the distribution of the first through holes is matched with the distribution of main reinforcements of the reinforcement cage; after the upper ends of the main reinforcements are inserted into the first through holes, the fixed connecting pieces are fixedly connected with the main reinforcements and the connecting steel plates; the upper end of the downward-inserting steel pipe is fixedly connected with the center of the connecting steel plate. The lower end of the downward-inserting steel pipe is used for being connected with the lower end of a reinforcement cage. And the vibrating plate is fixedly connected with the connecting steel plate. During use, the connecting steel plate is matched with the fixed connecting piece to be fixedly connected with the upper end of the main reinforcement of the reinforcement cage, the downwards-inserted steel pipe is connected with the lower end of the reinforcement cage, the connecting steel plate is matched with the downwards-inserted steel pipe to synchronously apply pressure to the upper end and the lower end of the reinforcement cage, the downwards-inserted speed of the reinforcement cage can be increased, and efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cast-in-place pile construction, and in particular relates to a pressing device for a steel cage of a post-insertion steel cast-in-place pile. Background Art

[0002] Bored and grouted piles (referred to as "grouted piles") have changed the traditional construction method of placing a steel cage first and then pouring concrete after drilling. It is a pile-making method in which the long spiral drill is used to drill a hole while pouring concrete, and then the steel cage is lowered after the drill is lifted. This method has low construction noise and no mud pollution. It is a new type of pile with high practical value. However, when lowering the steel cage, due to the influence of concrete resistance, external force must be used to solve the resistance of inserting the steel bars, which affects the construction quality. At present, a steel bar inserter is usually used on construction sites. The steel bar inserter can only pressurize the bottom of the steel cage, and the insertion efficiency is low. Summary of the invention

[0003] The present application provides a pressing device for a steel cage of a post-rebar-inserted cast-in-place pile, which is mainly used to solve the problem of low efficiency of the existing steel cage pressing device assisted by the steel cage.

[0004] The present application provides a pressing device for a steel cage of a post-insertion reinforcement pressure-cast pile, which is used to assist in the lowering of the steel cage, and is characterized by comprising:

[0005] A connecting steel plate, wherein the connecting steel plate is provided with a plurality of first through holes, and the distribution of the plurality of first through holes matches the distribution of the main bars of the steel cage;

[0006] A fixed connection piece, after the upper end of the main reinforcement is inserted into the first through hole, the fixed connection piece fixedly connects the main reinforcement and the connecting steel plate;

[0007] A lower inserted steel pipe, the upper end of which is fixedly connected to the center of the connecting steel plate, and the lower end of which is used to be connected to the lower end of the steel cage;

[0008] A vibrating plate, wherein the vibrating plate is fixedly connected to the connecting steel plate.

[0009] The above-mentioned downward pressing device for the post-reinforcement pressure-casting steel cage includes a connecting steel plate, on the upper and lower surfaces of which a vibrating plate and a downward inserted steel pipe are fixedly connected, respectively, and a first through hole is opened on the connecting steel plate. When in use, the connecting steel plate cooperates with the fixed connecting piece to be fixedly connected to the upper end of the main reinforcement of the steel cage, and the downward inserted steel pipe is connected to the lower end of the steel cage. The vibrating plate is connected to the vibrating downward pressing equipment to provide downward pressure and vibration. The connecting steel plate cooperates with the downward inserted steel pipe to synchronously apply pressure to the upper and lower ends of the steel cage, which can increase the speed of the steel cage insertion and improve efficiency.

[0010] In the technical solution of one embodiment, a second through hole is opened in the center of the connecting steel plate, and the second through hole is connected to the lower inserted steel pipe.

[0011] In the technical solution of one embodiment, the lower surface of the connecting steel plate is further provided with connecting steel pipes having the same number as the first through holes, the upper ends of the connecting steel pipes are fixedly connected to the connecting steel plate, and the connecting steel pipes are coaxial with the first through holes.

[0012] In a technical solution of one embodiment, when the upper end of the main reinforcement passes through the connecting steel pipe and is inserted into the first through hole to be fixedly connected to the connecting steel plate, the connecting steel pipe abuts against the reinforcing hoop of the steel cage.

[0013] In the technical solution of one embodiment, the pressing device for the post-insertion reinforcement cast-in-place pile reinforcement cage also includes at least one suspension rod, which is a hollow structure with an inner diameter larger than the diameter of the main reinforcement; the suspension rod has an external thread, the connecting steel pipe has an internal thread, and the suspension rod and the connecting steel pipe are connected by threaded cooperation.

[0014] In the technical solution of one embodiment, the upper end of the suspension rod is provided with an ear plate.

[0015] In the technical solution of one embodiment, there are two suspension rods, which are arranged symmetrically.

[0016] In the technical solution of one embodiment, the vibrating plate is a semicircular steel plate welded to the connecting steel plate, and the vibrating plate is provided with holes.

[0017] In the technical solution of one embodiment, the fixed connection member is a steel bar anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in this application are used to illustrate preferred embodiments, so as to facilitate a person skilled in the art to clearly understand various other advantages and benefits, and should not be considered as limiting this application. In addition, the same reference numerals are used to represent the same components in all the drawings.

[0019] Figure 1 It is a three-dimensional schematic diagram of a pressing device for a post-reinforcement pressure-cast pile reinforcement cage in one embodiment of the present application.

[0020] Figure 2 It is a three-dimensional schematic diagram of the connection between the pressing device and the steel cage used for the post-reinforcement pressure-cast pile steel cage in one embodiment of the present application.

[0021] Figure 3 for Figure 2 Schematic diagram of the decomposition.

[0022] Figure 4It is a three-dimensional schematic diagram of a pressing device for a post-reinforcement pressure-cast pile reinforcement cage in one embodiment of the present application.

[0023] Explanation of the figure numbers: 10, connecting steel plate; 11, first through hole; 12, second through hole; 20, connecting steel pipe; 30, steel bar anchor; 40, lower inserted steel pipe; 50, vibrating plate; 60, hanger; 61, ear plate; 70, steel cage; 71, main reinforcement; 72, reinforcement hoop. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0027] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0028] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] See also Figure 1 , Figure 2 and Figure 3 The embodiment of the present application provides a pressing device for a post-reinforcement pressure-cast pile steel cage, which is used to assist the steel cage 70 to be inserted into concrete, and mainly includes a connecting steel plate 10, a fixed connecting piece, a lower inserting steel pipe 40 and a vibrating plate 50. The connecting steel plate 10 is provided with a plurality of first through holes 11, and the distribution of the plurality of first through holes 11 matches the distribution of the main bars 71 of the steel cage 70, that is, a circular array distribution; after the fixed connecting piece is inserted into the first through hole 11 at the upper end of the main bar 71, the main bar 71 and the connecting steel plate 10 are fixedly connected to form a whole; the upper end of the lower inserting steel pipe 40 is fixedly connected to the center of the connecting steel plate 10, and the lower end of the lower inserting steel pipe 40 is used to be connected to the lower end of the steel cage 70, that is, contact connection; the vibrating plate 50 is fixedly connected to the connecting steel plate 10. When the above-mentioned pressing device for the post-insertion reinforcement pressure-casting pile reinforcement cage is in use, first, the pressing device (which can also be a vibrating device) clamps and fixes the vibrating plate 50, and the main reinforcement 71 is inserted into the first through hole 11 one by one and fixed by a fixed connector, and the lower end of the inserted steel pipe 40 is inserted into the reinforcement cage 70 and contacts the bottom of the reinforcement cage 70; then the pressing device for the post-insertion reinforcement pressure-casting pile reinforcement cage is hoisted integrally with the reinforcement cage 70 and inserted into the pile hole with concrete; the pressing device provides downward pressure and vibration, and the connecting steel plate 10 cooperates with the inserted steel pipe 40 to simultaneously apply pressure to the upper and lower ends of the reinforcement cage 70, which can increase the speed of the reinforcement cage insertion and improve efficiency. Since the pressing device for the post-insertion reinforcement pressure-casting pile reinforcement cage is connected to the reinforcement cage 70 as a whole, the reinforcement cage 70 can be reciprocated as a whole during the pressing process, further increasing the insertion speed and depth.

[0030] It should be noted that, when the lower inserted steel pipe 40 is installed, the lower inserted steel pipe 40 falls to the bottom of the steel cage 70 and supports the bottom of the steel cage 70. Under the action of the weight of the steel cage 70 itself, the steel cage 70 can be straightened and have a certain tensile stress. The top and bottom of the steel cage 70 are respectively fixed by the lower inserted steel pipe 4 and the connecting steel plate 10 to maintain this tensile stress. In this way, during the lower insertion process of the steel cage 70, the concrete resistance borne by the steel cage 70 will be partially offset by the tensile stress. At the same time, by fixing the upper and lower ends of the steel cage 70 by the lower inserted steel pipe 4 and the connecting steel plate 10, it can also be ensured that the steel cage 70 does not deform or deforms less, and is less subject to concrete resistance, which is conducive to the lower insertion of the steel cage 70.

[0031] Specifically, the upper end of the lower inserted steel pipe 40 can be welded and fixed to the center of the connecting steel plate 10, and the vibrating plate 50 can be welded and fixed to the upper surface of the connecting steel plate 10 to ensure the firmness and integrity of the connection.

[0032] Specifically, the vibrating plate 50 is a semicircular steel plate, and a hole is opened in the vibrating plate 50 to match the connecting part of the pressing device (or vibrating device).

[0033] Specifically, the fixed connection piece is a steel bar anchor 30 .

[0034] In some embodiments, a second through hole 12 is opened in the center of the connecting steel plate 10, and the second through hole 12 is connected to the lower inserted steel pipe 40. When the lower inserted steel pipe is inserted into concrete, concrete can overflow from the second through hole 12 along the connecting steel plate 10, reducing the resistance during the downward pressing process.

[0035] In some embodiments, the lower surface of the connecting steel plate 10 is further provided with connecting steel pipes 20 having the same number as the first through holes 11, the upper end of the connecting steel pipe 20 is fixedly connected to the connecting steel plate 10 (preferably welded or threaded), the connecting steel pipe 20 is coaxial with the first through hole 11, and the inner diameter of the connecting steel pipe 20 is greater than the diameter of the main reinforcement 71. By using the connecting steel pipe 20 to cover a portion of the main reinforcement 71, the firmness of the connection with the steel cage 70 can be further ensured, and the steel cage 70 can also be prevented from deformation during reciprocating rotation.

[0036] It is understandable that, at the same time, conventional rebar inserters often only have one function of inserting downwards, while the pressing device for the post-insertion rebar pressure-cast pile reinforcement cage provided in the present application can perform a certain amount of positive and negative rotation, lifting and pressing downwards in conjunction with the connecting steel pipe 20, which can greatly increase the inserting effect by disturbing the concrete to increase the workability of the concrete near the steel bars.

[0037] In a further embodiment, when the upper end of the main reinforcement 71 passes through the connecting steel pipe 20 and is inserted into the first through hole 11 and fixedly connected to the connecting steel plate 10 (that is, after the downward pressure device for the post-insertion reinforcement pressure-casting pile reinforcement cage is connected to the reinforcement cage 70 as a whole), the connecting steel pipe 20 abuts against the reinforcement hoop 72 of the reinforcement cage 70 to transmit the downward pressure vibration pressure.

[0038] It is understandable that the connecting steel pipes 20 are in contact with the reinforcing hoop 72, and the pressure of the connecting steel plate 10 is transmitted to the connecting steel pipe 20, and the connecting steel pipe 20 transmits the pressure to the reinforcing hoop 72, so that the steel cage 70 is not only subjected to the pressure of the bottom inserted steel pipe 40, but also subjected to the pressure from the top connecting steel pipe 20, and the force is relatively uniform. The traditional rebar inserter has only one force point at the bottom. Forcibly inserting the rebar cage 70 will cause huge tensile stress inside the rebar cage 70, which usually causes the winding rebar to fall off, and even causes the rebar cage to fall apart, making insertion more difficult. In addition, the two-point force is balanced by the top pressure to balance a part of the tensile stress inside the rebar cage 70, which is conducive to the insertion of the rebar cage 70 while protecting the integrity of the rebar cage 70.

[0039] In the technical solution of one embodiment, the pressing device for the post-insertion reinforcement pressure-casting pile reinforcement cage also includes at least one suspension rod 60, which is a hollow structure with an inner diameter greater than the diameter of the main reinforcement 71; the suspension rod 60 has an external thread, and the connecting steel pipe 20 has an internal thread. The suspension rod 60 and the connecting steel pipe 20 are connected by threaded matching, and the length of the suspension rod 60 and the connecting steel pipe 20 is consistent. When the reinforcement cage 70 is inserted below the concrete surface, the suspension rod 60 can be screwed to continue to press the reinforcement cage 70 (main reinforcement 71) downward to ensure that the reinforcement cage 70 can be inserted to a predetermined depth.

[0040] It should be noted that after the steel cage 70 is inserted into the depth, it is often located below the original ground (i.e., inside the concrete), and it is difficult to measure and monitor whether the steel cage 70 is lowered into place by measuring instruments. By measuring the exposed elevation of the hanger 60, the insertion effect of the steel cage 70 can be monitored (the total length of the hanger 60 minus the exposed elevation is equal to the depth of the steel cage 70 below the original ground) to see whether it is inserted into place.

[0041] Preferably, there are generally two suspension rods 60 , which facilitates the synchronous and symmetrical insertion of the main bars 71 of the steel cage 70 from two directions, thereby ensuring the verticality of the steel cage 70 .

[0042] Furthermore, the upper end of the suspension rod 60 has an ear plate 61 , which can facilitate the lifting of the suspension rod 60 or the entirety, and can also facilitate the use of tools (wrench, etc.) to rotate it to connect with the connecting steel pipe 20 .

[0043] In summary, compared with the prior art, the pressing device for the post-insertion reinforcement pressure-cast pile reinforcement cage provided by the embodiment of the utility model has the following beneficial effects:

[0044] 1. The installation process is safe and environmentally friendly. The entire installation process is completed on the ground. The installation can be completed by simply tightening the steel anchor 30.

[0045] 2. The steel cage 70 has a good insertion effect, can monitor the insertion situation, and is easy to adjust. Compared with the traditional steel bar inserter with a single function, it can realize multiple functions such as lifting, pressing, rotating, and monitoring. The steel cage insertion efficiency is high, the precision is high, and it is easy to adjust;

[0046] 3. The processing materials are easy to obtain, the cost is economical, and the conditions for large-scale promotion are met. The required raw materials such as steel bar anchors 30, steel pipes, steel plates, etc. are all commonly used materials on construction sites and are met for large-scale use.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pressing device for a steel cage for post-insertion reinforcement pressure-cast piles, used to assist in the lowering of the steel cage, characterized in that: include: A connecting steel plate, wherein the connecting steel plate is provided with a plurality of first through holes, and the distribution of the plurality of first through holes matches the distribution of the main bars of the steel cage; A fixed connection piece, after the upper end of the main reinforcement is inserted into the first through hole, the fixed connection piece fixedly connects the main reinforcement and the connecting steel plate; A lower inserted steel pipe, the upper end of which is fixedly connected to the center of the connecting steel plate, and the lower end of which is used to be connected to the lower end of the steel cage; A vibrating plate, wherein the vibrating plate is fixedly connected to the connecting steel plate.

2. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 1, characterized in that: A second through hole is opened at the center of the connecting steel plate, and the second through hole is connected to the lower inserted steel pipe.

3. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 1, characterized in that: The lower surface of the connecting steel plate is also provided with connecting steel pipes having the same number as the first through holes, the upper ends of the connecting steel pipes are fixedly connected to the connecting steel plate, and the connecting steel pipes are coaxial with the first through holes.

4. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 3, characterized in that: When the upper end of the main reinforcement passes through the connecting steel pipe and is inserted into the first through hole to be fixedly connected to the connecting steel plate, the connecting steel pipe abuts against the reinforcing hoop of the steel cage.

5. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 3, characterized in that: The pressing device for the post-insertion reinforcement pile steel cage also includes at least one suspension rod, which is a hollow structure with an inner diameter larger than the diameter of the main reinforcement; the suspension rod has an external thread, the connecting steel pipe has an internal thread, and the suspension rod and the connecting steel pipe are connected by threaded cooperation.

6. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 5, characterized in that: The upper end of the suspension rod is provided with an ear plate.

7. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 5, characterized in that: There are two suspension rods, which are symmetrically arranged.

8. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 1, characterized in that: The vibrating plate is a semicircular steel plate welded to the connecting steel plate, and the vibrating plate is provided with holes.

9. The pressing device for the post-reinforcement pressure-cast pile reinforcement cage according to claim 1, characterized in that: The fixed connection piece is a steel bar anchor.

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