Residue soil falling prevention device for prestressed pipe pile
By designing a slag drop prevention device for prestressed pipe piles, the barrier body is formed by using circular plates and expansion devices, the problem of slag drop is solved and the construction efficiency and core filling quality are improved.
Patent Information
- Application Number
- CN202421626971.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-10
AI Technical Summary
During the construction of prestressed pipe piles, slag soil is inevitably dropped into the pipe piles. The existing methods are time-consuming and labor-intensive and cannot be effectively cleaned, which affects the quality of the core filling.
A slag-proof dropping device is designed, including a circular plate, an expansion device and a driving mechanism. Through the expansion device, a support system is formed and the circular plate is cooperated to form a stable barrier body to prevent the slag from falling.
Effectively prevent slag from falling into the pipe pile, simplifying the preparation process of the core filling process, saving construction time and slag cleaning costs.
Smart Images
Figure CN222862256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of slag-proof devices, and in particular to a slag-proof device for prestressed pipe piles. Background Art
[0002] Prestressed pipe piles are hollow cylindrical slender concrete prefabricated components made by prestressing technology and centrifugal forming. They are mainly composed of cylindrical pile bodies, end plates and steel sleeves. When the geological conditions are poor and the bearing capacity of the foundation is small, the prestressed pipe piles are driven into the ground so that the weight of the upper building is transferred to the lower layer of soil with high bearing capacity through the pile foundation. If the lower layer of soil with high bearing capacity is very deep, the friction between the pile foundation and the surrounding soil can be used to support the weight of the upper building.
[0003] Since the pipe piles are hollow and need to penetrate deep into the soil, the debris generated during the construction and subsequent earth excavation will inevitably fall into the pipe piles. When the pipe pile construction is in the core pouring process, the debris in the pipe 1.5m-2.5m below the top of the pipe needs to be cleaned before proceeding. The existing construction method uses an air compressor to deliver air downward to squeeze out the debris. This method is time-consuming and labor-intensive. When bricks fall into it, they cannot be taken out, which greatly affects the quality of the entire core pouring. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a device for preventing slag from falling off for prestressed pipe piles.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A device for preventing debris from falling for prestressed pipe piles comprises a circular plate, an expansion device and a driving mechanism. The driving device is used to adjust the expansion device to form a support system and cooperate with the circular plate to form a stable blocking body on the pipe pile. When the pipe pile is deeply embedded in the soil and during the subsequent earthwork excavation, the debris generated can be prevented from falling into the pipe pile, so that the pipe pile construction can directly carry out the core pouring process.
[0007] Specifically, the expansion device is conical and consists of multiple expansion plates. A first support rod is provided on the inner side of the expansion plate, a second support rod is provided on the outer side, and the bottom is hinged to the position of the circular plate near the center hole; the driving mechanism includes a threaded rod and a positioning plate provided at the center hole of the circular plate, the positioning plate has a through hole, and the threaded rod is fixed to the through hole through a bearing, a nut is screwed on the position of the threaded rod located in the expansion device, and multiple first support rods are hinged to the nut.
[0008] Preferably, a positioning plate at the center hole of the circular ring plate seals the center hole to improve the structural quality of the circular ring plate and support the driving mechanism.
[0009] Preferably, a knob is provided at the position of the center hole below the positioning plate, and the knob is connected to the threaded rod to facilitate the rotation of the threaded rod.
[0010] Preferably, the knob and the threaded rod are integrally formed to improve structural strength.
[0011] Preferably, the outer diameter of the annular plate is the same as the diameter of the prestressed pipe pile. When the expansion device is in a closed state, there is a gap between the end of the second support rod away from the expansion plate and the wall of the prestressed pipe pile, ensuring that the second support rod can lean against the wall of the prestressed pipe pile to form a support system.
[0012] Preferably, when the expansion device is in a closed state, an acute angle is formed between the threaded rod and the first support rod, ensuring that when the nut moves on the threaded rod, the expansion device can be driven to expand or close.
[0013] Preferably, when the expansion device is in an open state, the second support rod presses against the pipe wall of the prestressed pipe pile, and the nut is located on the threaded rod to prevent the nut from being separated from the threaded rod.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] The utility model has a simple structure and is easy to use. The arranged circular ring plate, expansion device and driving mechanism cooperate with each other to form a stably assembled and detachable blocking body on the pipe pile, so that the debris generated during the pipe pile construction before the core pouring process can be effectively prevented from falling into the interior of the pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a top view of the circular ring plate of the utility model.
[0018] Figure symbols: 1. annular plate, 21. expansion plate, 22. first support rod, 23. second support rod, 32. positioning plate, 31. threaded rod, 33. bearing, 34. nut, 4. knob. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0020] Example 1
[0021] like Figure 1The device for preventing debris from falling for prestressed pipe piles shown in the figure comprises a circular plate 1, an expansion device and a driving mechanism. The circular plate 1, the expansion device and the driving mechanism cooperate with each other to form a stably assembled and detachable blocking body on the pipe pile. The blocking body formed before the core pouring process during the pipe pile construction can effectively prevent the generated debris from falling into the interior of the pipe pile. When the pipe pile construction reaches the core pouring process, the blocking body can be removed and the core pouring operation can be carried out directly.
[0022] Specifically, Figure 1-2 As shown, the expansion device is conical and consists of multiple expansion plates 21. A first support rod 22 is provided on the inner side of the expansion plate 21, and a second support rod 23 is provided on the outer side. The bottom is hinged to the position of the circular ring plate 1 close to the center hole; the driving mechanism includes a threaded rod 31 and a positioning plate 32 provided at the center hole of the circular ring plate 1, and the positioning plate 32 has a through hole; the threaded rod 31 is fixed to the through hole through a bearing 33, and a nut 34 is screwed to the position of the threaded rod 31 located in the expansion device, and multiple first support rods 22 are hinged to the nut 34.
[0023] During the pile construction process:
[0024] When the elevation of the pipe pile reaches the set elevation, the annular plate 1 and the expansion device are placed in the pipe pile at the same time, and the end of the expansion device away from the annular plate 1 is directed toward the bottom of the pipe pile, so that the edge of the annular plate 1 fits with the pile wall at the top of the pipe pile. At this time, the threaded rod 31 is rotated to drive the nut 34 to move, so that the first support rod 22 opens the expansion plate 21. When the second support rod 23 on the expansion plate 21 is close to the pipe wall of the pipe pile to form a stable support system, the rotation of the threaded rod 31 is stopped. At this time, the expansion device and the annular plate 1 form a blocking body with a stable assembly position in the pipe pile. The debris generated in the subsequent construction process is blocked by the formed blocking body, thereby preventing the debris from falling into the inside of the pipe pile.
[0025] When the pile construction reaches the core filling process, the threaded rod 31 is rotated in the opposite direction to drive the nut 34 to move in the opposite direction until the first support rod 22 tightens the expansion plate 21 to separate the second support rod 23 from the wall of the pile. After the second support rod 23 is separated from the wall of the pile, the annular plate 1 and the expansion device are taken out from the pile, and the blocked soil debris is taken out in the process. Then the core filling process can be carried out directly without the need for slag cleaning, thereby speeding up the construction period and saving the cost of slag cleaning at the later stage.
[0026] As a preferred solution of the above embodiment, in order to facilitate the rotation of the threaded rod 31 , a knob 4 is provided at the position of the center hole below the positioning plate 32 , and the knob 4 is connected to the threaded rod 31 to facilitate the rotation of the threaded rod 31 .
[0027] As a preferred solution of the above embodiment, the knob 4 and the threaded rod 31 are integrally formed to improve the structural strength.
[0028] As a preferred embodiment of the above embodiment, the outer diameter of the annular plate 1 is the same as the diameter of the prestressed pipe pile. When the expansion device is in a closed state, the end of the second support rod 23 away from the expansion plate 21 has a gap with the pipe wall of the prestressed pipe pile, ensuring that the second support rod can lean against the pipe wall of the pipe pile to form a support system. An acute angle is formed between the threaded rod 31 and the first support rod 22, ensuring that the nut 34 can be moved through the first support rod 22 during the movement to open or close the expansion device.
[0029] As a preferred solution of the above embodiment, when the expansion device is in the open state, the second support rod 23 presses against the pipe wall of the prestressed pipe pile, and the nut 34 is located on the threaded rod 31 to ensure that the nut 34 is always screwed on the threaded rod 31.
[0030] Of course, the present invention may have many other implementation modes. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.
Claims
1. A device for preventing slag from falling off for prestressed pipe piles, characterized in that: It comprises a circular ring plate (1), an expansion device and a driving mechanism; The expansion device is in the shape of a cone and is composed of a plurality of expansion plates (21). A first support rod (22) is provided on the inner side of the expansion plate (21), a second support rod (23) is provided on the outer side, and the bottom is hinged to a portion of the circular plate (1) close to the center hole. The driving mechanism comprises a threaded rod (31) and a positioning plate (32) arranged in the center hole of the circular ring plate (1); the positioning plate (32) has a through hole, and the threaded rod (31) is fixed to the through hole via a bearing (33); a nut (34) is screwed to a portion of the threaded rod (31) located in the expansion device, and a plurality of the first support rods (22) are hinged to the nut (34).
2. The device for preventing slag from falling for prestressed pipe piles according to claim 1, characterized in that: A knob (4) is provided at a portion of the central hole below the positioning plate (32), and the knob (4) is connected to the threaded rod (31).
3. The device for preventing slag from falling for prestressed pipe piles according to claim 2, characterized in that: The knob (4) and the threaded rod (31) are integrally formed.
4. The device for preventing slag from falling off for prestressed pipe piles according to claim 1, characterized in that: The outer diameter of the annular plate (1) is the same as the diameter of the prestressed pipe pile. When the expansion device is in a closed state, a gap exists between the end of the second support rod (23) away from the expansion plate (21) and the pipe wall of the prestressed pipe pile.
5. The device for preventing slag from falling off for prestressed pipe piles according to claim 1, characterized in that: When the expansion device is in a closed state, an acute angle is formed between the threaded rod (31) and the first support rod (22).
6. The device for preventing slag from falling off for prestressed pipe piles according to claim 5, characterized in that: When the expansion device is in an open state, the second support rod (23) presses against the pipe wall of the prestressed pipe pile, and the nut (34) is located on the threaded rod (31).