A pier column bag convenient for pouring

By designing pier bags that are easy to pour, and using grout to fill and form a support structure, the problems of large volume, inconvenient transportation and low installation efficiency of precast piers are solved, and efficient pier installation and stable support are achieved.

CN224496471UActive Publication Date: 2026-07-14CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD
Filing Date
2025-09-23
Publication Date
2026-07-14

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Abstract

The utility model relates to the technical field of pier construction, and concretely relates to a pier bag convenient to pour, which comprises a pier bag body, an exhaust cuff is connected to the top center of the pier bag body, two first grouting cuffs are connected to the upper side wall of the pier bag body, the axial center lines of the two first grouting cuffs are horizontally collinear, a second grouting cuff is connected to the upper side wall of the pier bag body, and the second grouting cuff is located below one of the grouting cuffs, when the slurry output end to be solidified is connected to the first grouting cuff or the second grouting cuff, the slurry is filled in the pier bag body, the overall shape of the pier bag body can replace the prefabricated pier after filling and solidification, the support of a specific position in a mining area is realized, the process of transporting the prefabricated pier is replaced, a mounting seat for the special pier is not needed, and the mounting efficiency of the pier in the mining area is improved.
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Description

Technical Field

[0001] This utility model relates to the field of pier construction technology, specifically a pier bag that facilitates casting. Background Technology

[0002] In civil engineering, piers are crucial load-bearing components that support the superstructure. Their cross-sections are mostly circular, but elliptical, square, and other irregular shapes also exist. During construction, the application of formwork technology is a key aspect in ensuring the appearance quality of the piers, involving stages such as concrete mix design, curing, and pouring. For example, excessive moisture content in the concrete can lead to pitting on the surface after demolding, while insufficient vibration can cause honeycomb and air bubble problems.

[0003] During the construction of the mine, prefabricated piers are transported to the mining area and installed to support the mine's structure.

[0004] Currently, prefabricated piers are large in size and inconvenient to transport. Furthermore, as prefabricated piers are integral rigid structures, their installation requires the setting up of specific mounting bases within the mining area, resulting in low operational efficiency. Therefore, to address these issues, a pier bag that is easy to cast is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problems of large volume, inconvenient transportation, and low operational efficiency of prefabricated piers due to their integral rigid structure requiring specific installation bases within the mining area, a pier bag designed for easy casting is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pier bag of this utility model is easy to cast, including a pier bag body, an exhaust sleeve connected to the top center of the pier bag body, two first grouting sleeves connected to the upper side wall of the pier bag body, the axis lines of the two first grouting sleeves are horizontally collinear, and a second grouting sleeve connected to the upper side wall of the pier bag body, the second grouting sleeve being located below one of the first grouting sleeves.

[0007] Preferably, multiple steel ring fixing sleeves are attached parallel to the outer wall of the pier column bag body. The multiple steel ring fixing sleeves are arranged at equal intervals along the vertical direction of the outer wall of the pier column bag body, and there is a certain distance between the uppermost steel ring fixing sleeve and the top surface of the pier column bag body.

[0008] Preferably, a plurality of cloth lifting rings are installed on the top surface of the pier column bag body, and the plurality of cloth lifting rings are installed at equal angles along the outer periphery of the pier column bag body.

[0009] Preferably, a steel ring body is fixed inside each of the plurality of steel ring fixing sleeves, and the steel ring body is located outside the pier column bag body.

[0010] Preferably, the outer wall of the steel ring body is provided with a plurality of lifting ring holes, and the plurality of lifting ring holes are equally spaced along the outer periphery of the steel ring body.

[0011] Preferably, the centerlines of the plurality of lifting ring holes are perpendicular to the horizontal plane, and the openings at both ends of the lifting ring holes correspond to the pre-reserved openings on the upper and lower parts of the outer wall of the steel ring fixing sleeve.

[0012] Preferably, the steel ring body is provided with multiple lifting buckles on its exterior. The bottom surface of the lifting buckle is fixedly connected to a linkage guide rod by a bracket. The linkage guide rod is slidably installed inside the lifting ring buckle hole. A fixing pressure plate is fitted between the top threaded rod of the lifting buckle and the linkage guide rod. The bottom protrusion of the fixing pressure plate can engage with the straight groove hole in the groove of the lifting buckle.

[0013] Preferably, the outer wall of the lifting buckle is fitted with a double-hole lifting ring, and the outer wall of the lifting buckle is fitted with a spring, one end of which contacts the top surface of the double-hole lifting ring.

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

[0015] I. In this utility model, when the output end of the grout to be solidified is connected to the first grouting sleeve or the second grouting sleeve, the grout is filled into the pier bag. After filling and solidification, the overall shape of the pier bag can replace the prefabricated pier, realize the support of a specific location in the mining area, replace the process of transporting prefabricated piers, and does not require a special pier installation seat, thus improving the installation efficiency of piers in the mining area.

[0016] Second, in this utility model, the steel ring fixing sleeve outside the pier bag is used to install the steel ring body at equal intervals. The rigid structure of the steel ring body itself increases the structural stability of the pier bag during the filling of the grout to be solidified, preventing the pier bag from being broken locally due to uneven stress under pressure filling, and increasing the rationality of the device structure. In addition, there is a certain distance between the steel ring body at the top and bottom of the pier bag and its two end faces. This distance allows the pier bag to make corresponding adaptive adjustments within a certain range according to the specific shape of its contact support surface in the mining area during the grout filling process, ensuring that the grout in the pier bag can stably contact and support the top surface of the mining area after the grout filling and solidification. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the side section of the pier column bag body in this utility model;

[0020] Figure 3 This is a three-dimensional view of the steel ring body and the lifting buckle in this utility model.

[0021] Figure 4 This is a perspective view of the disassembled lifting buckle in this utility model;

[0022] Legend:

[0023] 1. Pier column body; 11. Exhaust sleeve; 12. First grouting sleeve; 13. Second grouting sleeve; 2. Steel ring fixing sleeve; 14. Cloth lifting ring; 3. Steel ring body; 31. Lifting ring clip hole; 4. Lifting buckle; 41. Linkage guide rod; 42. Fixing pressure plate; 43. Double hole lifting ring; 44. Spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figure 1 - Figure 4 This utility model provides a convenient pier bag for casting, including a pier bag body 1. An exhaust sleeve 11 is connected to the center of the top of the pier bag body 1. Two first grouting sleeves 12 are connected to the upper side wall of the pier bag body 1, with their axes horizontally collinear. A second grouting sleeve 13 is connected to the upper side wall of the pier bag body 1, located below one of the first grouting sleeves 12. After the pier bag body 1 is placed in the support position in the mining area, the outlet end of the grout to be solidified is connected to either the first grouting sleeve 12 or the second grouting sleeve 13. Grout is injected into the pier bag 1. During the filling process, excess gas in the pier bag 1 is discharged through the exhaust sleeve 11. After the grouting is completed, the top surface of the pier bag 1 and the ground surface are simultaneously in contact with the top surface and ground surface of the support position in the mining area. After the grouting of the pier bag 1 is completed, the first grouting sleeve 12 or the second grouting sleeve 13 is disconnected from the grouting pipe and sealed. After a certain period of time, the grout solidifies. The pier bag 1, i.e. the solidified grout inside it, supports the support point in the mining area. The grouting filling method replaces the process of transporting prefabricated piers and installing support frames, thereby improving the efficiency of pier installation.

[0027] likeFigure 2 and Figure 3 As shown, multiple steel ring fixing sleeves 2 are attached parallel to the outer wall of the pier bag 1. These steel ring fixing sleeves 2 are arranged at equal intervals along the vertical direction of the outer wall of the pier bag 1. The uppermost steel ring fixing sleeve 2 is a certain distance from the top surface of the pier bag 1. Multiple cloth lifting rings 14 are installed on the top surface of the pier bag 1, and these rings are installed at equal angles along the outer perimeter of the pier bag 1. Steel ring bodies 3 are fixed inside each of the multiple steel ring fixing sleeves 2. The steel ring bodies 3 are located outside the pier bag 1. The steel ring fixing sleeves 2 work together to install the steel ring bodies 3 at equal intervals. The rigid structure of the steel ring bodies 3 increases the structural stability of the pier bag 1 during the filling of the grout to be solidified, preventing the pier bag 1 from collapsing. Uneven stress during pressure filling leads to localized breakage, increasing the structural rationality of the device. Furthermore, the steel ring body 3 located at the top and bottom of the pier bag 1 is a certain distance from its end faces. This distance allows the pier bag 1 to adapt to the specific shape of its contact support surface within the mining area during grout filling, ensuring stable contact and support between the grout filling solidified and the top surface of the mining area. The hanging ring 14, in conjunction with the hook on the top surface of the mining area, can lift the pier bag 1 as a whole during grout filling. Its flexible structure prevents compression or obstruction during contact between the top surface of the pier bag 1 and the top surface of the mining area, further enhancing the structural rationality of the device.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the outer wall of the steel ring body 3 is provided with multiple lifting ring holes 31. The multiple lifting ring holes 31 are opened at equal angles along the outer periphery of the steel ring body 3. The axis of the multiple lifting ring holes 31 is perpendicular to the horizontal plane. The openings at both ends of the lifting ring holes 31 correspond to the reserved openings at the top and bottom of the outer wall of the steel ring fixing sleeve 2. The lifting ring holes 31 are structures opened on the outer wall of the steel ring body 3 for installing auxiliary lifting devices of the steel ring body 3.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, multiple lifting buckles 4 are provided on the outside of the steel ring body 3. A linkage guide rod 41 is fixed to the bottom surface of each lifting buckle 4 via a bracket. The linkage guide rod 41 is slidably installed inside the lifting ring locking hole 31. A fixing plate 42 is fitted between the threaded rod at the top of the lifting buckle 4 and the linkage guide rod 41. The protruding post on the bottom surface of the fixing plate 42 can engage with the straight groove hole in the groove of the lifting buckle 4. A double-hole lifting ring 43 is fitted on the outer wall of the lifting buckle 4. A spring 44 is fitted on the outer wall of the lifting buckle 4. One end of the spring 44 contacts the top surface of the double-hole lifting ring 43. The lifting buckle 4 is connected to the linkage guide rod 4... After the lifting ring 41 is connected to the lifting eye 31, the fixing plate 42, which is fitted between the linkage guide rod 41 and the threaded column, can realize the relative installation of the lifting buckle 4 and the steel ring body 3 under the tightening action of the nut. The double-hole lifting ring 43, which is fitted on the outer wall of the lifting buckle 4, can be connected to the structure for lifting the steel ring body 3 through another ring. The spring 44 located between the double-hole lifting ring 43 and the fixing plate 42 can play a certain elastic buffering role during the process of lifting the double-hole lifting ring 43 and the steel ring body 3 as a whole, preventing the sudden pulling force from causing the steel ring body 3 to deform.

[0030] Working principle: After the pier bag 1 is placed at the support position in the mining area, the outlet end of the grout to be solidified is connected to the first grouting sleeve 12 or the second grouting sleeve 13. The grout is then filled into the pier bag 1. During the filling process, excess gas inside the pier bag 1 is discharged through the exhaust sleeve 11. After grouting is completed, the top surface of the pier bag 1 and the ground surface simultaneously contact the top surface and ground surface of the support position in the mining area. After the grouting of the pier bag 1 is completed, the first grouting sleeve 12 or the second grouting sleeve 13 is disconnected from the grouting pipe and sealed. The grout solidifies after a certain period of time. The pier bag 1, with its internal solidified grout, provides support for the support points within the mining area. Grouting replaces the transportation and support frame installation process of prefabricated piers. The steel ring fixing sleeve 2 of the pier bag 1 is used to install the steel ring body 3 at equal intervals. The rigid structure of the steel ring body 3 increases the structural stability of the pier bag 1 during the filling of the grout, preventing uneven stress and localized breakage under pressure filling. This increases the structural rationality of the device. Furthermore, the steel ring body 3 located at the top and bottom of the pier bag 1 is at a certain distance from its two end faces. The distance allows the pier bag 1 to adapt to the specific shape of its contact support surface within the mining area during the grout filling process, ensuring stable contact and support between the grout filling and the top surface of the mining area after solidification. The lifting ring 14, in conjunction with the hook on the top surface of the mining area, can lift the pier bag 1 as a whole during grout filling, and its flexible structure will not cause compression or obstruction during the contact between the top surface of the pier bag 1 and the top surface of the mining area. The lifting buckle 4, through the linkage guide rod 41, connects with... After the lifting ring 31 is completed, the fixing plate 42, which is fitted between the linkage guide rod 41 and the threaded column, can achieve the relative installation of the lifting buckle 4 and the steel ring body 3 under the tightening action of the nut. The double-hole lifting ring 43, which is fitted on the outer wall of the lifting buckle 4, can be connected to the structure for lifting the steel ring body 3 through another ring. The spring 44 located between the double-hole lifting ring 43 and the fixing plate 42 can play a certain elastic buffering role during the process of lifting the double-hole lifting ring 43 and the steel ring body 3 as a whole, preventing the sudden pulling force from causing the steel ring body 3 to deform.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pier bag that is easy to cast, characterized in that: The pier bag includes a pier body (1), with an exhaust sleeve (11) connected to the top center of the pier body (1), and two first grouting sleeves (12) connected to the upper side wall of the pier body (1). The center lines of the two first grouting sleeves (12) are horizontally collinear, and a second grouting sleeve (13) is connected to the upper side wall of the pier body (1). The second grouting sleeve (13) is located below one of the first grouting sleeves (12).

2. The pier bag for easy casting according to claim 1, characterized in that: Multiple steel ring fixing sleeves (2) are attached parallel to the outer wall of the pier bag (1). The multiple steel ring fixing sleeves (2) are arranged at equal intervals along the vertical direction of the outer wall of the pier bag (1). The uppermost steel ring fixing sleeve (2) is a certain distance away from the top surface of the pier bag (1).

3. The pier bag for easy casting according to claim 2, characterized in that: Multiple cloth lifting rings (14) are installed on the top surface of the pier bag body (1), and the multiple cloth lifting rings (14) are installed at equal angles along the outer periphery of the pier bag body (1).

4. The pier bag for easy casting according to claim 3, characterized in that: The steel ring fixing sleeves (2) are all fixed with steel ring bodies (3) inside, and the steel ring bodies (3) are located outside the pier bag body (1).

5. The pier bag for easy casting according to claim 4, characterized in that: The outer wall of the steel ring body (3) is provided with a plurality of lifting ring holes (31), and the plurality of lifting ring holes (31) are opened at equal angles along the outer periphery of the steel ring body (3).

6. The pier bag for easy casting according to claim 5, characterized in that: The centerlines of the multiple lifting ring holes (31) are perpendicular to the horizontal plane, and the openings at both ends of the lifting ring holes (31) correspond to the reserved openings on the upper and lower sides of the outer wall of the steel ring fixing sleeve (2).

7. The pier bag for easy casting according to claim 6, characterized in that: The steel ring body (3) is provided with multiple lifting buckles (4) on its exterior. The bottom surface of the lifting buckle (4) is fixed with a linkage guide rod (41) by a bracket. The linkage guide rod (41) is slidably installed inside the lifting ring buckle hole (31). A fixing plate (42) is fitted between the top threaded rod of the lifting buckle (4) and the linkage guide rod (41). The bottom protrusion of the fixing plate (42) can engage with the straight groove hole in the groove of the lifting buckle (4).

8. The pier bag for easy casting according to claim 7, characterized in that: The outer wall of the lifting buckle (4) is fitted with a double-hole lifting ring (43), and the outer wall of the lifting buckle (4) is fitted with a spring (44), one end of the spring (44) is in contact with the top surface of the double-hole lifting ring (43).