Urban wall enclosure ramming formwork
By designing a wall-encasing rammed earth formwork consisting of components such as a support base, wooden boards, reinforcing ribs, and an adjustable U-shaped frame, the problem of inconvenient adjustment and installation of existing formwork was solved, thus improving construction stability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI FIRST CONSTR GROUP
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-24
AI Technical Summary
The existing basement exterior wall formwork lacks easily adjustable and installable rammed earth support formwork, resulting in poor stability and applicability during construction.
The wall-encasing rammed earth formwork, which consists of components such as a support base, wooden planks, reinforcing ribs, a U-shaped frame, an inner sliding tube, an outer tube, a rotating seat, and auxiliary support rods, improves stability and applicability through an adjustable support structure.
It enables rapid installation and disassembly of the support device, improves construction efficiency, and enhances stability and applicability during the ramming process.
Smart Images

Figure CN224161430U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of building engineering technology, specifically a rammed earth formwork for city wall cladding. Background Technology
[0002] A rammed earth formwork for city wall cladding is a tool and equipment used in ancient city wall or similar projects to assist in rammed earth (or soil compaction) operations. Its main function is to provide a supporting framework for rammed earth work, ensuring the stability and accuracy of the soil during construction. Since city wall cladding is typically constructed from rammed earth, stone, or other materials, using this formwork ensures uniform thickness and consistent compaction density of the rammed earth layers, thereby improving project efficiency and quality.
[0003] For example, patent CN222314591U discloses a basement exterior wall formwork frame, including an upper formwork and a lower formwork. The upper formwork is equipped with a template for pouring, and water-stop bolts are inserted inside the template. The water-stop bolts symmetrically clamp horizontal steel pipes and wooden wedges on both sides of the template. The wooden wedges are triangular in design, and the inclined surface of the wooden wedges has a serrated surface. The serrated surface is in contact with the horizontal steel pipe, and the flat surface of the wooden wedges is in close contact with the template. The lower formwork supports the upper formwork through inclined steel pipes. By tightening and reinforcing the template at the horizontal construction joint of the exterior wall, the adverse effects of the initial deformation of the supporting steel pipe are eliminated. Through the force transmission path of the water-stop bolts, supporting steel pipes, and inclined wooden wedges, the supporting force is transmitted obliquely to the horizontal construction joint, which greatly enhances the formwork quality at key positions, avoids problems such as grout leakage and formwork bulging, and prevents deformation of the formwork frame. The wooden wedges are designed to press the template and steel pipes together.
[0004] However, the basement exterior wall formwork of this application lacks a rammed earth support formwork that is easy to adjust and install, resulting in poor stability and applicability during land construction. Utility Model Content
[0005] The purpose of this application is to provide a rammed earth support formwork for city walls, in order to solve the problem that the aforementioned basement exterior wall formwork lacks a conveniently adjustable and installable rammed earth support formwork, resulting in poor stability and applicability during land construction.
[0006] The technical solution adopted in this application is as follows: a rammed earth formwork for city wall cladding includes a wall body, a support base installed at the front end of the wall body, a wooden board installed at the front end of the wall body above the support base, an installation ring fixedly connected to the front end of the support base, a ground stake inserted into the installation ring, an outer sleeve installed at the front end of the inner side of the support base, an inner sliding tube slidably connected inside the outer sleeve, a rotating seat rotatably connected to the side end of the outer sleeve, an auxiliary support rod threadedly connected inside the rotating seat, an auxiliary support rod fitted to the rear end of the inner side of the support base, reinforcing ribs inserted inside the wooden board, a first U-shaped frame fixedly installed on the surface of the wooden board through the reinforcing ribs, and an inner sliding tube fitted to the lower end of the first U-shaped frame.
[0007] By adopting the above technical solution, the support base serves as the limiting base for the support device. A wooden board for supporting the wall is placed on the rear surface of the support base. The surface of the wooden board is reinforced with reinforcing ribs, and the tops of the reinforcing ribs are nailed into the wall through the wooden board. When installing the reinforcing ribs, the first U-shaped frame can be installed on the surface of the wooden board through the rear slot hole opened inside the first U-shaped frame. The threaded seat connected to the surface of the reinforcing rib is used to press the first U-shaped frame, making the first U-shaped frame fit against the wooden board, and the wooden board presses against the wall. After the first U-shaped frame is installed, the lower end of the first U-shaped frame can be supported by the inner sliding tube. For first U-shaped frames of different heights, the overall length of the inner sliding tube and the outer tube can be adjusted by sliding the inner sliding tube inside the outer tube. The lower end of the outer tube is placed against the inner front end of the support base, and the support base is fixed to the ground structure layer in advance by ground piles. Then, the length of the inner sliding tube is adjusted to support the first U-shaped frame. After fixing the positions of the outer tube and the inner sliding tube, the angle of the auxiliary support rod inside the rotating seat can be adjusted by rotating the rotating seat, so that the lower end of the auxiliary support rod abuts against the inner rear end of the support base, providing auxiliary support for the outer tube.
[0008] In a preferred embodiment, the surface of the support base is provided with a backfill slope, and a wooden board is installed at the upper end of the backfill slope.
[0009] By adopting the above technical solution, the soil slope opened on the surface of the support base is set with an inclination angle, and the gap reserved between the soil slope and the wooden board can be reinforced by filling with soil.
[0010] In a preferred embodiment, the first U-shaped frame has a rear slot hole inside, a reinforcing rib is threaded inside the first U-shaped frame, and a threaded seat is threaded on the surface of the reinforcing rib.
[0011] By adopting the above technical solution, the first U-shaped frame can be fixed to the surface of the wooden board by means of reinforcing ribs and threaded seats.
[0012] In a preferred embodiment, a screw is fixedly connected to the side end of the outer sleeve, and a rotating seat is threaded onto the surface of the screw. A cross groove is provided on the outer end of the rotating seat.
[0013] By adopting the above technical solution, the cross slot can be easily connected to the tool to adjust and rotate the rotating seat, and the auxiliary support rod installed in the rotating seat can be used to support the side end of the outer tube.
[0014] In a preferred embodiment, the surface of the auxiliary support rod is threaded with a limit nut.
[0015] By adopting the above technical solution, the limiting nut is used to fix the position of the auxiliary support rod.
[0016] In a preferred embodiment, the surface of the inner tube is provided with a plurality of adjustment holes, and the front end of the outer tube is threadedly connected with a threaded handle.
[0017] By adopting the above technical solution, the threaded handle can be inserted into the adjustment hole on the surface of the inner slide tube by rotating it, thereby fixing the position of the inner slide tube and adjusting the height of the inner slide tube according to the on-site construction conditions.
[0018] In a preferred embodiment, a second U-shaped frame is installed at the rear end of the wall, and an upper slot is provided at the top of the first U-shaped frame. A connecting rod is inserted into the upper slot, and a connecting seat is threaded to the top of the connecting rod on the surface of the second U-shaped frame.
[0019] By adopting the above technical solution, the structure of the second U-shaped frame is the same as that of the first U-shaped frame. After the first and second U-shaped frames are installed and fixed, the second U-shaped frame and the first U-shaped frame can be connected to each other on both sides of the wall using connecting rods.
[0020] In a preferred embodiment, a nail head seat is fixedly connected to the top of the pile.
[0021] By adopting the above technical solution, the structure of the nail head seat makes it convenient for construction workers to strike the top of the ground pile and drive it into the ground.
[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0023] In this application, the support base serves as the limiting base for the support device. A ground stake passes through the interior of the mounting ring and is driven into the structural layer to fix the support base. A wooden board for supporting the wall is placed on the rear surface of the support base. The surface of the wooden board is reinforced with reinforcing ribs, the tops of which are driven through the board and into the wall. When installing the reinforcing ribs, the first U-shaped frame can be installed on the surface of the wooden board through a rear slot hole inside the first U-shaped frame. The threaded seat connected to the reinforcing rib surface presses the first U-shaped frame against the wooden board, allowing the board to press against the wall. For first U-shaped frames of different heights, the overall length of the inner sliding tube and outer tube can be adjusted by sliding an adjustable inner tube within the outer tube. The lower end of the outer tube abuts against the inner front end of the support base. After fixing the positions of the outer tube and inner sliding tube, the angle of the auxiliary support rod inside the rotating seat can be adjusted by rotating the rotating seat, allowing the lower end of the auxiliary support rod to abut against the inner rear end of the support base, providing auxiliary support for the outer tube. This creates a triangular structure with the outer tube, auxiliary support rod, and support base, improving the stability of the support device. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a rammed earth formwork for wall enclosure in this application;
[0025] Figure 2 For this application Figure 1 Enlarged view of point A in the image;
[0026] Figure 3 For this application Figure 1 Enlarged view of point B in the image;
[0027] Figure 4 This is a side view of the mold frame in this application.
[0028] The markings in the diagram are: 1. Wall; 2. Support base; 3. Wooden board; 4. First U-shaped frame; 6. Outer tube; 7. Inner sliding tube; 8. Adjustment hole; 9. Threaded handle; 10. Mounting ring; 11. Ground stake; 12. Nail head seat; 13. Backfill slope; 14. Screw; 15. Rotating seat; 16. Auxiliary support rod; 17. Limiting nut; 18. Second U-shaped frame; 19. Upper slot hole; 20. Rear slot hole; 21. Connecting rod; 22. Connecting seat; 23. Reinforcing rib; 24. Threaded seat; 25. Cross groove. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0030] Example:
[0031] Reference Figure 1-4 The system includes a wall 1, a support base 2 installed at the front end of the wall 1, a wooden board 3 installed at the front end of the wall 1 and above the support base 2, a mounting ring 10 fixedly connected to the front end of the support base 2, a ground stake 11 inserted into the mounting ring 10, an outer sleeve 6 installed at the front end of the inner side of the support base 2, an inner sliding tube 7 slidably connected inside the outer sleeve 6, a rotating seat 15 rotatably connected to the side end of the outer sleeve 6, an auxiliary support rod 16 threadedly connected inside the rotating seat 15, an auxiliary support rod 16 attached to the rear end of the inner side of the support base 2, reinforcing ribs 23 inserted inside the wooden board 3, a first U-shaped frame 4 fixedly installed on the surface of the wooden board 3 through the reinforcing ribs 23, and an inner sliding tube 7 attached to the lower end of the first U-shaped frame 4. The support base 2 is the limiting base of the support device. The wooden board 3 for supporting the wall 1 is placed on the rear end surface of the support base 2. The surface of the wooden board 3 is reinforced by the reinforcing ribs 23, and the top of the reinforcing ribs 23 is nailed into the interior of the wall 1 through the wooden board 3.
[0032] When installing the reinforcing rib 23, the first U-shaped frame 4 can be installed on the surface of the wooden board 3 through the rear slot 20 inside the first U-shaped frame 4. The threaded seat 24 connected to the surface of the reinforcing rib 23 is used to press the first U-shaped frame 4, so that the first U-shaped frame 4 fits against the wooden board 3, and the wooden board 3 presses against the wall 1. After the first U-shaped frame 4 is installed, the lower end of the first U-shaped frame 4 can be supported by the inner sliding tube 7. For first U-shaped frames 4 of different heights, the overall length of the inner sliding tube 7 and the outer sleeve 6 can be adjusted by sliding the inner sliding tube 7 inside the outer sleeve 6. The lower end of the outer sleeve 6 is pressed against the inner front end of the support base 2, and the support base 2 is fixed to the ground structure layer in advance by the ground stake 11. Then, the length of the inner sliding tube 7 is adjusted to support the first U-shaped frame 4. After fixing the position of the outer sleeve 6 and the inner sliding tube 7, the angle of the auxiliary support rod 16 inside the rotating seat 15 can be adjusted by rotating the rotating seat 15, so that the lower end of the auxiliary support rod 16 presses against the inner rear end of the support base 2, providing auxiliary support for the outer sleeve 6. The outer sleeve 6, the auxiliary support rod 16, and the support base 2 form a triangular structure to improve the stability of the support device.
[0033] Reference Figure 4The surface of the support base 2 is provided with a backfill slope 13, and a wooden board 3 is installed on the upper end of the backfill slope 13. The backfill slope 13 on the surface of the support base 2 is provided with an inclination angle. The gap reserved between the backfill slope 13 and the wooden board 3 can be reinforced by backfilling with soil to improve the stability of the wooden board 3 during installation.
[0034] Reference Figure 3 and Figure 4 The first U-shaped frame 4 has a rear slot 20 inside, and a reinforcing rib 23 is threaded inside the first U-shaped frame 4. A threaded seat 24 is threaded on the surface of the reinforcing rib 23. The first U-shaped frame 4 can be fixed to the surface of the wooden board 3 by the reinforcing rib 23 and the threaded seat 24. The first U-shaped frame 4 compresses the wooden board 3, thereby shaping the wall 1.
[0035] Reference Figure 1 and Figure 2 A screw 14 is fixedly connected to the side end of the outer tube 6. A rotating seat 15 is threaded onto the surface of the screw 14. A cross groove 25 is provided on the outer end of the rotating seat 15. Tools can be easily inserted into the cross groove 25 to adjust and rotate the rotating seat 15. An auxiliary support rod 16 installed inside the rotating seat 15 supports the side end of the outer tube 6.
[0036] Reference Figure 2 The auxiliary support rod 16 is threadedly connected to a limit nut 17. The limit nut 17 is used to fix the position of the auxiliary support rod 16.
[0037] Reference Figure 1 The inner sliding tube 7 has multiple adjustment holes 8 on its surface, and the front end of the outer sleeve 6 is threaded with a threaded handle 9. By rotating the threaded handle 9, it can be inserted into the adjustment hole 8 on the surface of the inner sliding tube 7, thereby fixing the position of the inner sliding tube 7. The height of the inner sliding tube 7 can be adjusted according to the on-site construction conditions. When not in use, the inner sliding tube 7 can be stored inside the outer sleeve 6 for easy storage and movement.
[0038] Reference Figure 1 and Figure 3 A second U-shaped frame 18 is installed at the rear end of the wall 1. The top of the first U-shaped frame 4 has an upper slot 19, into which a connecting rod 21 is inserted. A connecting seat 22 is threaded onto the top of the connecting rod 21, located on the surface of the second U-shaped frame 18. The structure of the second U-shaped frame 18 is the same as that of the first U-shaped frame 4. After the first U-shaped frame 4 and the second U-shaped frame 18 are installed and fixed, the second U-shaped frame 18 and the first U-shaped frame 4 can be connected on both sides of the wall 1 via the connecting rod 21. The second U-shaped frame 18 is positioned higher than the first U-shaped frame 4, allowing the lower end of the connecting rod 21 to be inserted into the upper slot 19 at the top of the first U-shaped frame 4. The first U-shaped frames 4 and the second U-shaped frames 18 at both ends clamp the two sides of the wall 1.
[0039] Reference Figure 1 A nail head seat 12 is fixedly connected to the top of the ground pile 11. The ground pile 11 passes through the inside of the mounting ring 10 and is driven into the structural layer, which can fix the support base 2. The structure of the nail head seat 12 makes it convenient for construction workers to knock the top of the ground pile 11 into the ground.
[0040] The implementation principle of this application for a formwork for rammed earth construction of a city wall is as follows: The support base 2 serves as the limiting base for the support device. The ground pile 11 passes through the interior of the mounting ring 10 and is nailed into the structural layer to fix the support base 2. The structure of the nail head seat 12 facilitates construction workers to hammer the top of the ground pile 11 and nail it into the ground. A wooden board 3 for supporting the wall 1 is placed on the rear end surface of the support base 2. The surface of the wooden board 3 is reinforced by reinforcing ribs 23, and the top of the reinforcing ribs 23 passes through the wooden board 3 and is nailed into the interior of the wall 1. When installing the reinforcing ribs 23, the first U-shaped frame 4 can be installed on the surface of the wooden board 3 through the rear slot 20 opened inside the first U-shaped frame 4. The threaded seat 24 connected to the surface of the reinforcing rib 23 is used to press the first U-shaped frame 4, so that the first U-shaped frame 4 fits the wooden board 3, and the wooden board 3 presses the wall 1. The structure of the second U-shaped frame 18 is the same as that of the first U-shaped frame 4. After the first U-shaped frame 4 and the second U-shaped frame 18 are installed and fixed, the second U-shaped frame 18 and the first U-shaped frame 4 can be connected on both sides of the wall 1 by connecting rods 21. The second U-shaped frame 18 is positioned higher than the first U-shaped frame 4, and the lower end of the connecting rod 21 is inserted into the upper slot 19 of the first U-shaped frame 4. The first U-shaped frame 4 and the second U-shaped frame 18 at both ends are used to clamp the two sides of the wall 1. After the first U-shaped frame 4 is installed, the lower end of the first U-shaped frame 4 can be supported by the inner sliding tube 7. For first U-shaped frames 4 of different heights, the overall length of the inner sliding tube 7 and the outer tube 6 can be adjusted by sliding the inner sliding tube 7 inside the outer tube 6. The lower end of the outer tube 6 is pressed against the inner front end of the support base 2, and the support base 2 is fixed to the ground structure layer in advance by the ground stake 11. Then, the length of the inner sliding tube 7 is adjusted to support the first U-shaped frame 4. After fixing the positions of the outer sleeve 6 and the inner sliding tube 7, the angle of the auxiliary support rod 16 inside the rotating seat 15 can be adjusted by rotating the rotating seat 15, so that the lower end of the auxiliary support rod 16 abuts against the inner rear end of the support base 2, providing auxiliary support for the outer sleeve 6. This creates a triangular structure with the outer sleeve 6, the auxiliary support rod 16, and the support base 2, improving the stability of the support device. This device is equipped with multiple auxiliary support devices, and adjustable height and angle structures are provided between the support devices. The support devices can be quickly installed and disassembled, improving construction efficiency.
[0041] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A rammed earth formwork for city wall construction, comprising a wall body, characterized in that: A support base is installed at the front end of the wall. A wooden board is installed at the front end of the wall and above the support base. A mounting ring is fixedly connected to the front end of the support base. A ground stake is inserted into the inside of the mounting ring. An outer sleeve is installed at the front end of the inner side of the support base. An inner sliding tube is slidably connected inside the outer sleeve. A rotating seat is rotatably connected to the side end of the outer sleeve. An auxiliary support rod is threaded inside the rotating seat. An auxiliary support rod is fitted to the rear end of the inner side of the support base. A reinforcing rib is inserted inside the wooden board. A first U-shaped frame is fixedly installed on the surface of the wooden board through the reinforcing rib. The lower end of the first U-shaped frame is fitted to the inner sliding tube.
2. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: The surface of the support base is provided with a backfill slope, and a wooden board is installed at the upper end of the backfill slope.
3. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: The first U-shaped frame has a rear slot hole inside, and a reinforcing rib is threaded inside the first U-shaped frame. A threaded seat is threaded on the surface of the reinforcing rib.
4. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: A screw is fixedly connected to the side end of the outer sleeve, and a rotating seat is threaded onto the surface of the screw. A cross groove is provided on the outer end of the rotating seat.
5. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: The auxiliary support rod has a threaded connection to a limit nut.
6. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: The inner tube has multiple adjustment holes on its surface, and the front end of the outer tube is threaded with a threaded handle.
7. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: A second U-shaped frame is installed at the rear end of the wall. The top of the first U-shaped frame has an upper slot hole. A connecting rod is inserted into the upper slot hole. A connecting seat is threaded onto the top of the connecting rod and located on the surface of the second U-shaped frame.
8. The rammed earth formwork for city wall construction as described in claim 1, characterized in that: The top of the pile is fixedly connected to a nail head seat.
Citation Information
Patent Citations
Basement outer wall formwork support
CN222314591U