Plastic drainage plate inserting device for soft soil foundation
The plastic drainage board insertion device addresses connection instability by using a limit frame and rotating cylinder system to enhance stability and prevent back-draft, ensuring smooth insertion and separation of the sleeve and steel bar.
Patent Information
- Application Number
- CN202420759997.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-13
AI Technical Summary
Existing plastic drainage board insertion methods face instability in the connection between the sleeve and the counterweight steel bar, leading to back-draft phenomena and separation issues during insertion, affecting the insertion process.
A plastic drainage board insertion device with a limit frame and rotating cylinder system that enhances connection stability by restricting the movement of the counterweight steel bar and allowing synchronized movement with the sleeve, while the rotating cylinder separates the limit frame without affecting retraction.
The device ensures stable insertion and prevents back-draft by maintaining connection integrity between the sleeve and steel bar, facilitating smooth insertion and preventing separation during the process.
Smart Images
Figure CN222161207U_ABST
Abstract
Description
Technical Field
[0001] The utility model provides a plastic drainage board inserting device for a soft soil foundation, belonging to the technical field of construction. Background Art
[0002] Plastic drain board is also known as plastic drain belt, which has many shapes such as wave type and harmonica type. The middle is an extruded plastic core board, which is the skeleton and channel of the drain belt. Its cross section is a parallel cross, and both sides are wrapped with non-woven geotextiles as filter layers. The core belt plays a supporting role and discharges the water infiltrated from the filter layer upward. It is a good vertical channel for soft soil foundation treatment using drainage consolidation method, which greatly shortens the consolidation time of soft soil. Because the plastic drain board is relatively soft and cannot be directly inserted into the foundation, during the construction process, a counterweight steel bar is often fixed at the end of the plastic drain board, and the plastic drain board is placed in the sleeve, and the sleeve is connected to the counterweight steel bar and inserted together; after inserting to the set depth, the sleeve is pulled out, and the counterweight steel bar is left in the foundation together with the plastic drain board, and then the plastic drain board can be cut off; when the sleeve is pulled back, the plastic drain board will be lifted up a certain length, resulting in a back-draft phenomenon.
[0003] In response to the back-draft phenomenon, publication number CN210395308U discloses a plug-in plate structure for a plastic drain board, including a sleeve, and two elastic devices are centrally symmetrically arranged on the inner wall of the sleeve near the lower end, the elastic device includes a sleeve fixedly connected to the inner wall of the sleeve, one end of the sleeve is open and the opening is arranged downward, a push rod is arranged in the sleeve, and a sliding groove is arranged in the sleeve for the push rod to partially slide out of the sleeve, and a spring is connected between the push rod and the bottom of the sleeve; a sealing plate is connected to the lower end of the sleeve, and the sealing plate has a through opening for the plastic drain board to extend downward out of the sleeve, and also includes a disposable short-section steel bar for fixing to the plastic drain board, the length of the short-section steel bar is greater than the outer diameter of the sleeve, and the end of the push rod is provided with a first arc groove for pressing the short-section steel bar.
[0004] The above application provides an elastic device to give a reverse thrust to the short section of the steel bar connected to the plastic drain board when the sleeve is pulled back, so that the plastic drain board is not easily pulled back when the sleeve is pulled back; however, the setting of the elastic device will continuously exert a thrust on the steel bar away from the sleeve, greatly increasing the instability of the connection between the sleeve and the steel bar, which can easily cause the sleeve to separate from the steel bar during the insertion process of the sleeve, affecting the insertion effect. Utility Model Content
[0005] The utility model provides a plastic drainage board insertion device for a soft soil foundation. By setting a limit frame, the connection stability between the counterweight steel bar and the sleeve can be increased. A rotating cylinder is set to drive the limit frame to separate from the sleeve without affecting the retraction of the sleeve. This can solve the problem that the existing technology cannot ensure the stability of the connection between the sleeve and the steel bar.
[0006] In order to solve the above-mentioned problems, the utility model proposes the following technical solutions: a plastic drain board insertion device for a soft soil foundation, comprising a casing, in which a plastic drain board is arranged; a through hole is opened at the bottom of the casing, and the plastic drain board passes through the through hole; a counterweight steel bar is arranged at the bottom of the casing, and the counterweight steel bar is fixedly connected to the plastic drain board; two limit frames are arranged at the bottom of the casing, and two ends of the counterweight steel bar are respectively located in the two limit frames; a rotating cylinder is threadedly connected to the inner wall of the casing, and the rotating cylinder is fixedly connected to the limit frame.
[0007] As an improvement, a guide groove is provided at the bottom of the sleeve, a connecting rod fixedly connected to the rotating cylinder is arranged in the guide groove, and the connecting rod is fixedly connected to the limiting frame.
[0008] As an improvement, two guide grooves are provided, and the two guide grooves correspond to the two limit frames respectively.
[0009] As an improvement, two positioning grooves are provided at the bottom of the sleeve, and positioning rods are provided in the positioning grooves for sliding up and down, and the positioning rods are fixedly connected to the counterweight steel bars.
[0010] As an improvement, there is a gap between the counterweight steel bar and the limiting frame.
[0011] Beneficial effects of the utility model:
[0012] 1. Two limit frames are provided at the bottom of the casing, and the two ends of the counterweight steel bar are respectively located in the two limit frames; by providing the limit frames, the up and down movement of the counterweight steel bar can be restricted, thereby greatly increasing the connection stability between the casing and the counterweight steel bar, and facilitating the insertion of the casing and the counterweight steel bar.
[0013] 2. A rotating cylinder is threadedly connected to the inner wall of the casing, and the rotating cylinder is fixedly connected to the limit frame; when the rotating cylinder is rotated, the limit frame can be driven to rotate, so that the limit frame and the counterweight steel bar are separated and the pull-out of the casing is not affected; and the rotating cylinder will also move when it rotates, so that the counterweight steel bar can be pressed down through the limit frame, so that the counterweight steel bar can continue to move downward for a distance to offset the pull-back phenomenon caused when the casing is pulled back. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The utility model is a bottom view of a sleeve of a plastic drainage board insertion device for a soft soil foundation.
[0015] Figure 2 It is a stereoscopic diagram of a plastic drainage board insertion device for a soft soil foundation according to the utility model.
[0016] Figure 3 The utility model is a diagram showing the internal structure of a sleeve of a plastic drainage board insertion device for a soft soil foundation.
[0017] Figure 4 It is a cross-sectional view of a plastic drainage board insertion device for a soft soil foundation according to the utility model.
[0018] 1. Casing; 2. Plastic drain board; 3. Through hole; 4. Counterweight steel bar; 5. Limit frame; 6. Guide groove; 7. Rotating cylinder; 8. Connecting rod; 9. Positioning groove; 10. Positioning rod. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings.
[0020] according to Figure 1-4 As shown: the utility model provides a plastic drain board insertion device for soft soil foundation: it includes a sleeve 1, and a plastic drain board 2 is arranged in the sleeve 1; a through hole 3 is opened at the bottom of the sleeve 1, and the plastic drain board 2 passes through the through hole 3; a counterweight steel bar 4 is arranged at the bottom of the sleeve 1, and the counterweight steel bar 4 is fixedly connected to the plastic drain board 2; two limit frames 5 are arranged at the bottom of the sleeve 1, and the two ends of the counterweight steel bar 4 are respectively located in the two limit frames 5; a rotating cylinder 7 is threadedly connected to the inner wall of the sleeve 1, and the rotating cylinder 7 is fixedly connected to the limit frame 5.
[0021] By setting the limit frame 5, the connection stability between the counterweight steel bar 4 and the casing 1 can be increased, and the setting of the rotating cylinder 7 can drive the limit frame 5 to separate from the casing 1 without affecting the retraction of the casing 1, which can solve the problem that the existing technology cannot ensure the stability of the connection between the casing 1 and the steel bar.
[0022] A guide groove 6 is provided at the bottom of the sleeve 1, and a connecting rod 8 fixedly connected to the rotating cylinder 7 is arranged in the guide groove 6, and the connecting rod 8 is fixedly connected to the limit frame 5. Two guide grooves 6 are provided, and the two guide grooves 6 correspond to the two limit frames 5 respectively.
[0023] The connecting rod 8 can connect the rotating cylinder 7 and the limiting frame 5, so as to transmit the rotation and movement of the rotating cylinder 7 to the limiting frame 5; the setting of the guide groove 6 can guide the rotation of the connecting rod 8.
[0024] Two positioning grooves 9 are provided at the bottom of the sleeve 1 , and positioning rods 10 are slidably arranged in the positioning grooves 9 , and the positioning rods 10 are fixedly connected to the counterweight steel bars 4 .
[0025] The arrangement of the positioning groove 9 and the positioning rod 10 can limit the horizontal rotation of the counterweight steel bar 4 , thereby preventing the counterweight steel bar 4 from rotating in the horizontal direction and escaping from the limiting frame 5 .
[0026] There is a gap between the counterweight steel bar 4 and the limiting frame 5, which can prevent the limiting frame 5 from interfering with or colliding with the counterweight steel bar 4 when rotating.
[0027] Principle of the utility model
[0028] When the plastic drain board 2 is inserted, the sleeve 1 is connected to the counterweight steel bar 4 and inserted into the soft soil foundation in the state shown in the figure; since the threaded connection structure has good self-locking performance, the position of the limit frame 5 fixedly connected to the rotating cylinder 7 is very stable; the limit frame 5 can limit the up and down displacement of the two ends of the counterweight steel bar 4, so that the counterweight steel bar 4 can ensure the connection stability and movement synchronization with the sleeve 1. When the sleeve 1 is inserted to the set depth, the sleeve 1 needs to be pulled out; at this time, the rotating cylinder 7 is twisted to drive the limit frame 5 to rotate through the connecting rod 8, and the limit frame 5 is separated from the end of the counterweight steel bar 4; before the limit frame 5 is completely separated from the counterweight steel bar 4, since the rotating cylinder 7 will also drive the limit frame 5 to move downward for a distance when rotating, the limit frame 5 can drive the counterweight steel bar 4 to continue to move downward for a distance, so as to offset the back-draft phenomenon generated when the sleeve 1 is pulled out. When the limit frame 5 no longer limits the counterweight steel bar 4, the sleeve 1 can be directly pulled out, and the counterweight steel bar 4 will remain in the foundation with the plastic drain board 2 due to the friction with the soil; finally, the plastic drain board 2 in the sleeve 1 can be cut off.
[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A plastic drain board insertion device for a soft soil foundation, comprising a sleeve (1), wherein a plastic drain board (2) is arranged inside the sleeve (1); a through hole (3) is opened at the bottom of the sleeve (1), and the plastic drain board (2) passes through the through hole (3); a counterweight steel bar (4) is arranged at the bottom of the sleeve (1), and the counterweight steel bar (4) is fixedly connected to the plastic drain board (2); characterized in that: Two limit frames (5) are arranged at the bottom of the sleeve (1), and the two ends of the counterweight steel bar (4) are respectively located in the two limit frames (5); a rotating cylinder (7) is threadedly connected to the inner wall of the sleeve (1), and the rotating cylinder (7) is fixedly connected to the limit frames (5).
2. The device for inserting a plastic drainage board for a soft soil foundation according to claim 1, characterized in that: A guide groove (6) is provided at the bottom of the sleeve (1), a connecting rod (8) fixedly connected to the rotating cylinder (7) is arranged in the guide groove (6), and the connecting rod (8) is fixedly connected to the limiting frame (5).
3. The device for inserting a plastic drainage board for a soft soil foundation according to claim 2, characterized in that: Two guide grooves (6) are provided, and the two guide grooves (6) correspond to the two limit frames (5) respectively.
4. The plastic drainage board insertion device for soft soil foundation according to claim 1, characterized in that: The bottom of the sleeve (1) is provided with two positioning grooves (9), and positioning rods (10) are arranged in the positioning grooves (9) to slide up and down, and the positioning rods (10) are fixedly connected to the counterweight steel bars (4).
5. The plastic drainage board insertion device for soft soil foundation according to claim 1, characterized in that: There is a gap between the counterweight steel bar (4) and the limiting frame (5).