Recoverable and reusable compression-resistant and pulling-resistant mechanism

Abstract

The utility model discloses a recyclable compression-resistant and pulling-resistant mechanism which comprises a connecting rod and a squeezing and expanding mechanism. The extruding and expanding mechanism comprises an extruding and expanding pipe, a connecting rod, a plurality of upper extruding and expanding plates, a plurality of lower extruding and expanding plates and a plurality of movable plates; one end of the connecting rod is connected with the squeezing and expanding pipe; the connecting rod is slidably arranged on the inner wall of the extruding and expanding pipe; a plurality of squeezing and expanding grooves are formed in the side wall of the squeezing and expanding pipe in a surrounding mode, and an upper squeezing and expanding plate and a lower squeezing and expanding plate are arranged in each squeezing and expanding groove; the connecting end of the upper squeezing and expanding plate is hinged to the side wall of the squeezing and expanding pipe; the connecting end of the lower extruding and expanding plate is hinged to the side wall of the extruding and expanding pipe; one end of the movable plate is hinged with the connecting rod, and the other end is hinged with the extruding and expanding ends of the upper extruding and expanding plate and the lower extruding and expanding plate. The utility model provides a compression-resistant and pulling-resistant mechanism which can bear vertical compression resistance and pulling resistance and can be recycled and reused, counter force can be provided for a static load test, and a reinforcing effect can be provided for a temporary structural foundation.

Description

Technical Field

[0001] This utility model relates to the field of static load testing technology, and in particular to a recyclable compression and pull-out resistance mechanism that provides compression and pull-out resistance for large-tonnage static load tests of pile foundations under adverse geological conditions. Background Technology

[0002] Static load testing of pile foundations is considered the most reliable method for determining the bearing capacity of a single pile. Static load testing using the anchor pile combined with surcharge method requires foundation treatment to ensure the foundation can withstand the load from the superstructure, which increases the cost of the static load test. During loading, the anchor pile bears the tensile force and needs to provide sufficient pull-out resistance. When the soil layer is soft, traditional anchor piles that rely on side friction to provide pull-out resistance are less effective. Therefore, this invention provides a recyclable and reusable compressive and pull-out resistance mechanism as an anchor pile, which can be combined with steel beams and other structures to form a prefabricated system. This device can provide reaction force for the static load test of the pile. This device can withstand the pressure of the superstructure load, avoids foundation treatment, and provides sufficient pull-out resistance. This device can achieve good compressive and pull-out resistance effects even in sites with adverse geological conditions. Utility Model Content

[0003] The purpose of this invention is to propose a recyclable compression and pull-out resistance mechanism that can withstand vertical compression and pull-out, provide reaction force for static load tests, and provide reinforcement for temporary structural foundations.

[0004] To solve the above-mentioned technical problems, this utility model provides a recyclable and reusable compression and pull-out resistant mechanism, including a connecting rod and an extrusion mechanism;

[0005] The extrusion expansion mechanism includes an extrusion expansion tube, a connecting rod, multiple upper extrusion expansion plates, multiple lower extrusion expansion plates, and multiple movable plates;

[0006] One end of the connecting rod is connected to the extrusion tube;

[0007] The connecting rod is slidably disposed on the inner wall of the extrusion tube;

[0008] The sidewall of the extrusion tube is provided with a plurality of extrusion grooves, and an upper extrusion plate and a lower extrusion plate are respectively provided in one of the extrusion grooves;

[0009] The connecting end of the upper extrusion plate is hinged to the side wall of the extrusion tube and is close to the end of the extrusion tube that is connected to the connecting rod; the connecting end of the lower extrusion plate is hinged to the side wall of the extrusion tube and is away from the end of the extrusion tube that is connected to the connecting rod.

[0010] The extrusion ends of the upper extrusion plate and the lower extrusion plate are positioned opposite each other and maintain a predetermined distance.

[0011] One end of the movable plate is hinged to the connecting rod, and the other end is hinged to the extrusion ends of both the upper and lower extrusion plates.

[0012] Furthermore, it also includes a power device disposed inside the connecting rod, the power device being connected to the connecting rod and used to drive the connecting rod to move up and down to realize the expansion and retraction of the extrusion mechanism.

[0013] Furthermore, the power unit includes a hydraulic cylinder and an oil pipe disposed inside the connecting rod. The telescopic end of the hydraulic cylinder is connected to the connecting rod, the oil pipe is connected to the hydraulic cylinder, and a valve is provided on the oil pipe.

[0014] Furthermore, the power unit also includes a booster cylinder disposed inside the connecting rod, the booster cylinder being located between the oil cylinder and the oil pipe; the telescopic end of the booster cylinder is connected to the oil cylinder, and the fixed end is connected to the oil pipe.

[0015] Furthermore, the extrusion expansion mechanism also includes multiple ear plates, all of which are welded and fixed inside the extrusion expansion tube; the connecting ends of the upper extrusion expansion plate and the lower extrusion expansion plate are hinged to the ear plates via a first rotating shaft.

[0016] Furthermore, the extrusion expansion mechanism also includes a plurality of first fixing plates; the plurality of first fixing plates are all welded and fixed to the connecting end of the upper extrusion expansion plate and the lower extrusion expansion plate; the plurality of first fixing plates are all hinged to the plurality of ear plates through the first rotating shaft.

[0017] Furthermore, the extrusion expansion mechanism also includes multiple second fixed plates; the multiple second fixed plates are all welded and fixed to the extrusion ends of the upper extrusion expansion plate and the lower extrusion expansion plate; the other end of the movable plate is hinged to the multiple second fixed plates through a second rotating shaft.

[0018] Furthermore, the side wall of the connecting rod is provided with multiple limiting grooves; both the upper extrusion plate and the lower extrusion plate are provided with multiple baffles. When the extrusion mechanism is in the retracted state, the multiple baffles are stuck in the multiple limiting grooves; when the extrusion mechanism is in the expanding state, the multiple baffles are moved away from the multiple limiting grooves.

[0019] Furthermore, it also includes an external hexagonal connector; one end of the external hexagonal connector is connected to the other end of the connecting rod via a second flange.

[0020] Furthermore, it also includes a pointed connector; the pointed connector is connected to the other end of the extrusion mechanism via a third flange.

[0021] Through the above technical solution, this utility model has the following beneficial effects:

[0022] The external hydraulic control system controls the upward movement of the connecting rod of the extrusion and expansion mechanism. The connecting rod drives the movable plate to rotate, and the movable plate drives the upper and lower extrusion and expansion plates to retract simultaneously, turning the extrusion and expansion mechanism into a cylindrical shape, which facilitates the removal of the device. When the hydraulic control system controls the connecting rod to move downward, the connecting rod drives the movable plate to rotate, and the movable plate pushes the upper and lower extrusion and expansion plates to expand simultaneously, thereby firmly locking the device in the soil and achieving the effect of resisting pressure and pull-out. Thus, the device can be recycled and reused as a whole, reducing the formation of construction waste and avoiding resource waste.

[0023] Furthermore, when the connector in the extrusion mechanism reaches its limit position, that is, when the upper and lower extrusion plates open to their maximum extent simultaneously, the extrusion mechanism is at its dead point. The sides of the multiple movable plates near the connecting rod are all in close contact with the connecting rod, and the sides of the multiple movable plates near the connecting rod are all at the same horizontal position. At this time, the upper and lower extrusion plates cannot retract under any external force, thus ensuring the stability and safety of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the retracted state of the recyclable and reusable compression and pull-out resistant mechanism of this utility model.

[0025] Figure 2 This is a front view of the retracted state of a recyclable and reusable compression and pull-out resistant mechanism according to this utility model.

[0026] Figure 3 This is a schematic diagram of the overall structure of the recyclable and reusable compression and pull-out resistant mechanism of this utility model in its expanded state.

[0027] Figure 4 This is a front view of the expanded state of a recyclable and reusable compression and pull-out resistant mechanism according to this utility model;

[0028] Figure 5 This is a schematic diagram of the extrusion mechanism of a recyclable and reusable compression and pull-out resistant mechanism according to this utility model.

[0029] Figure 6 This is a three-dimensional structural diagram of the extrusion and expansion mechanism of a recyclable and reusable compression and pull-out resistant mechanism according to this utility model.

[0030] Figure 7 This is a three-dimensional structural diagram of the extrusion plate and connecting rod of a recyclable and reusable compression and pull-out resistant mechanism according to this utility model.

[0031] Figure 8 This is a schematic diagram of a steel pipe or precast pipe pile with a pile tip being driven into the soil layer in one embodiment of the present invention;

[0032] Figure 9This is a schematic diagram illustrating the process of ramming the pile tip to separate from the pipe pile in one embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram illustrating the process of tamping and filling reinforcing materials into a steel pipe or precast pipe pile in one embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the compression and pull-out resistance mechanism inserted into the artificial bearing layer in one embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the anti-compression and anti-pull-out mechanism opening after being inserted into the artificial bearing layer in one embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the compression and pull-out resistance mechanism recovering from a steel pipe or precast pipe pile in one embodiment of the present invention.

[0037] In the diagram: 1-Connecting rod; 2-First flange; 3-External hexagonal joint; 4-Expansion tube; 5-Pointed connector; 61-Upper expansion plate; 62-Lower expansion plate; 7-Ear plate; 8-First rotating shaft; 90-Connecting rod; 91-Connector; 10-Moving plate; 110-Second fixed plate; 111-First fixed plate; 12-Second rotating shaft; 13-Second flange; 14-Third flange; 15-Baffle; 16-Power unit; 160-Hydraulic cylinder; 161-Booster cylinder; 162-Oil pipe. Detailed Implementation

[0038] The following is a more detailed description of a recyclable and reusable compression and pull-out resistant mechanism of the present invention, with reference to schematic diagrams illustrating preferred embodiments. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0039] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0040] like Figure 1-4 As shown in the figure, this utility model embodiment proposes a recyclable and reusable compression and pull-out resistant mechanism, including a connecting rod 1 and an extrusion mechanism.

[0041] Specifically, the connecting rod 1 can be a threaded high-strength steel connecting rod, which has high material hardness and good practicality. To facilitate the installation of the compression and pull-out resistance mechanism, one end of the connecting rod 1 is connected to the extrusion and expansion mechanism through the first flange 2.

[0042] Combination Figure 5-7 As shown, the extrusion expansion mechanism includes an extrusion expansion tube 4, a connecting rod 90, multiple upper extrusion expansion plates 61, multiple lower extrusion expansion plates 62, and multiple movable plates 10.

[0043] Specifically, one end of the connecting rod 1 is connected to the extrusion tube 4, the connecting rod 90 is slidably disposed on the inner wall of the extrusion tube 4, and multiple extrusion grooves are arranged around the side wall of the extrusion tube 4. An upper extrusion plate 61 and a lower extrusion plate 62 are respectively disposed in one of the extrusion grooves. The connecting end of the upper extrusion plate 61 is hinged to the side wall of the extrusion tube 4 and close to the end of the extrusion tube 4 connected to the connecting rod 1; the connecting end of the lower extrusion plate 62 is hinged to the side wall of the extrusion tube 4 and away from the end of the extrusion tube 4 connected to the connecting rod 1; one end of the movable plate 10 is hinged to the connecting rod 90, and the other end is hinged to the extrusion ends of both the upper extrusion plate 61 and the lower extrusion plate 62.

[0044] When the expansion mechanism expands within the compacted hard soil space, the lower hard soil space of this device first needs to be repeatedly compacted with a tamping hammer to provide a solid foundation for pull-out resistance. The expansion force is provided by external equipment using existing technology, such as large construction equipment. Specifically, the hydraulic control system of the large construction equipment is connected to the connecting rod 90, driving the connecting rod 90 to move up and down. By driving the connecting rod 90 up and down, the movable plate 10 can be rotated. When the hydraulic control system drives the connecting rod 90 to press down, the movable plate 10 is pressed down, causing the upper expansion plate 61 and the lower expansion plate 62 to expand outward simultaneously to achieve the purpose of pull-out resistance. When pull-out is required, the hydraulic control system drives the connecting rod 90 to move upward, pulling the movable plate 10 to rotate, causing the movable plate 10 to drive the upper expansion plate 61 and the lower expansion plate 62 to retract inward into the expansion groove simultaneously. At this time, the expansion mechanism becomes cylindrical, making the device easier to dismantle. Since the device does not need to be damaged during pull-out, the entire device can be recycled and reused.

[0045] To enhance the pull-out resistance of this device, in this embodiment, the number of extrusion and expansion mechanisms is increased multiple times. Furthermore, depending on construction requirements, the length of the connecting rod 1 can be extended to accommodate the different geological strata's length requirements for the device.

[0046] Furthermore, to facilitate the rotation of the multiple upper extrusion plates 61 and multiple lower extrusion plates 62, the extrusion mechanism also includes multiple ear plates 7, which are welded and fixed inside the extrusion tube 4. The extrusion mechanism also includes multiple first fixing plates 111, which are fixedly welded to the connecting ends of the upper extrusion plates 61 and lower extrusion plates 62. The multiple first fixing plates 111 are hinged to the ear plates 7 via the first rotating shaft 8. The extrusion mechanism also includes multiple second fixing plates 110, which are fixedly welded to the extrusion ends of the upper extrusion plates 61 and lower extrusion plates 62. The other end of the movable plate 10 is hinged to the multiple second fixing plates 110 via the second rotating shaft 12. Through this structural arrangement, the upper extrusion plates 61 and lower extrusion plates 62 can rotate within a certain range around the first rotating shaft 8 and the second rotating shaft 12, thereby achieving the effect of expansion or retraction.

[0047] In this embodiment, when the extrusion mechanism is in retraction and expansion, the extrusion ends of the upper extrusion plate 61 and the lower extrusion plate 62 are positioned opposite each other and maintain a predetermined distance, ensuring the normal operation of the device. Furthermore, in the retracted state, the sidewalls of both the upper and lower extrusion plates 61 and 62 remain in the same vertical and horizontal position as the sidewall of the extrusion tube 4. Additionally, when the hydraulic control system controls the connector 91 to reach its maximum downward position, i.e., when the upper and lower extrusion plates 61 and 62 simultaneously open to their maximum extent (e.g., to a maximum angle of 30°), the extrusion mechanism is at a dead point. This means that the sides of the multiple movable plates 10 closest to the connecting rod 90 are tightly pressed against the connecting rod 90, and the sides of the multiple movable plates 10 closest to the connecting rod 90 are all in the same horizontal position. At this time, the upper and lower extrusion plates 61 and 62 cannot retract under any external force, ensuring the stability and safety of the device.

[0048] To facilitate easier connection with the hydraulic control system, this embodiment also includes a power device 16 disposed inside the connecting rod 1. The power device 16 is connected to the connecting rod 90 and is used to drive the connecting rod 90 to move up and down to realize the expansion and retraction of the extrusion mechanism.

[0049] Specifically, the power unit 16 includes a hydraulic cylinder 160 and an oil pipe 162 disposed inside the connecting rod 1. The telescopic end of the hydraulic cylinder 160 is connected to the connecting rod 90, and is used to drive the connecting rod 90 to move up and down to realize the expansion and retraction of the extrusion mechanism. The power unit 16 also includes a booster cylinder 161 disposed inside the connecting rod 1. The booster cylinder 161 is located between the hydraulic cylinder 160 and the oil pipe 162; the telescopic end of the booster cylinder 161 is connected to the hydraulic cylinder 160, and the fixed end is connected to the oil pipe 162.

[0050] The oil pipe 162 is connected to the oil cylinder 160, and a valve is provided on the oil pipe 162. When the extrusion mechanism is in the expansion state and the telescopic end of the oil cylinder 160 is in the extended state, the hydraulic control system is connected to the oil pipe 162, the valve is opened, and a pressure relief action is performed, thereby controlling the oil cylinder 160 and causing the telescopic end of the oil cylinder 160 to retract, so as to drive the connecting rod 90 to move upward to realize the retraction of the extrusion mechanism. When the extrusion mechanism is in the retracted state, the hydraulic system is connected to the oil pipe 162, and the oil pipe 162 controls the telescopic end of the oil cylinder 160 to perform a push-out action, thereby driving the connecting rod 90 to move downward, which can drive the movable plate 10 to rotate. By pressing down on the movable plate 10, the movable plate 10 drives the upper extrusion plate 61 and the lower extrusion plate 62 to expand outward simultaneously. At the same time, the valve is closed. The dead point position and the valve closure work together to enhance the overall compressive and pull-out resistance. When the device is in a space that is too hard, causing the hydraulic cylinder 160 to have insufficient output and be unable to expand the extrusion mechanism to its maximum extent, a booster cylinder 161 can be connected to the hydraulic cylinder 160. The hydraulic control system is connected to the oil pipe 162. By opening the valve, the hydraulic control system controls the extension end of the booster cylinder 161 to extend through the oil pipe 162, which can provide additional power to push the hydraulic cylinder 160 downward, thereby driving the connecting rod 90 downward, which can drive the movable plate 10 to rotate. By pressing down on the movable plate 10, the movable plate 10 drives the upper extrusion plate 61 and the lower extrusion plate 62 to expand outward simultaneously, thereby achieving the expansion effect and the purpose of resisting pull-out.

[0051] The connecting rod 90 has a connector 91 at one end near the connecting rod 1. The connector 91 has inwardly recessed grooves on both sides to facilitate connection with the telescopic end of the hydraulic cylinder 160. The connection method can be a bolt connection or a snap-fit ​​connection. Preferably, the connector 91 and the connecting rod 90 can be integrally formed.

[0052] In a preferred embodiment, the sidewall of the connecting rod 90 is provided with multiple limiting grooves; both the upper extrusion plate 61 and the lower extrusion plate 62 are provided with multiple baffles 15. Furthermore, the upper extrusion plate 61 and the lower extrusion plate 62 are integrally formed with the multiple baffles 15. When the extrusion mechanism is in the retracted state, the multiple baffles 15 are engaged in the multiple limiting grooves, thus limiting the multiple baffles 15 and consequently limiting the multiple upper extrusion plates 61 and the multiple lower extrusion plates 62. Four extrusion grooves can be arranged around the sidewall of the extrusion tube 4, each extrusion groove having one upper extrusion plate 61 and one lower extrusion plate 62. Simultaneously, each upper extrusion plate 61 and lower extrusion plate 62 is provided with two baffles 15. Depending on the number of baffles 15, the number of limiting grooves can be correspondingly set to eight, which facilitates improved stability of the device. When the extrusion mechanism is in the expanding state, the multiple baffles 15 move away from the multiple limiting grooves.

[0053] In another preferred embodiment, the device further includes an external hexagonal connector 3 and a pointed connector 5. The pointed connector 5 is designed to be easy to insert into a space in hard soil.

[0054] Specifically, one end of the external hexagonal connector 3 is connected to the other end of the connecting rod 1 through the second flange 13, and one end of the pointed connector 5 is connected to the other end of the extrusion mechanism through the third flange 14. The connection method of the second flange 13 and the third flange 14 facilitates installation.

[0055] Since the recyclable and reusable compression and pull-out mechanism provided in this embodiment can withstand vertical compression and pull-out, it can be used to repair existing building structures, such as those damaged by natural disasters, such as earthquakes, floods and typhoons; it can also be used as temporary foundations for temporary houses and mobile houses for construction, or temporary houses and temporary bridges for disaster relief.

[0056] Furthermore, the recyclable and reusable compressive and tensile strength mechanism provided in this embodiment can not only replace existing pipe piles in operation, but also be used in conjunction with existing pipe piles to improve their tensile strength, making it particularly suitable for sites with adverse geological conditions. Since anchor pile combined with large-tonnage static load tests requires foundation treatment to ensure the foundation's compressive bearing capacity can withstand the total weight of the upper load blocks, this foundation treatment undoubtedly increases the cost of the static load test. During loading, the anchor pile bears the tensile force and needs to provide sufficient tensile strength. When the soil layer is soft, traditional anchor piles that rely on side friction to provide tensile strength are less effective. Therefore, this utility model provides a recyclable and reusable compressive and tensile strength mechanism as an anchor pile, which can be combined with steel beams and other structures to form a prefabricated system. This device can provide reaction force for static load tests of foundation piles. This device can withstand the pressure of the upper load, avoiding foundation treatment, and can provide sufficient tensile strength, achieving good compressive and tensile strength effects even in sites with adverse geological conditions.

[0057] In a specific example, it can be combined Figure 8-13As shown, the first step is to locate the pile foundation. Specifically, determine the pile diameter and length, select steel pipes or precast pipe piles of the same diameter, and drive them into the soft soil layer to the corresponding depth, i.e., the pile length. Next, use a tamping hammer to tamp the steel pipe or precast pipe pile, causing the concrete or steel pile tip to detach from the pipe pile. Continue tamping the bearing soil layer at the bottom of the steel pipe or pipe pile, simultaneously filling in reinforcing material to form an enlarged head at the bottom of the steel pipe or pipe pile, composed of a mixture of reinforcing material and soil. Then, place this device inside the steel pipe or pipe pile, allowing the extrusion and expansion mechanism to insert into the enlarged head at the bottom of the steel pipe or pipe pile. Open the extrusion and expansion mechanism, ensuring a tight engagement between the mechanism and the enlarged head formed at the bottom of the steel pipe or pipe pile, allowing them to work together. Finally, when it is necessary to retrieve the device, retract the extrusion and expansion mechanism and pull the device out. Therefore, for soft soil layers, the compressive and tensile strength of traditional pile foundations is relatively low. In this specific example, pipe piles or steel pipes are used as sleeves. A hard enlarged head bearing layer is formed at the bottom of the pipe pile by tamping. This device is closely connected with the artificial bearing layer and works together to achieve the purpose of compressive and tensile strength that can be recycled and reused under soft soil layer conditions.

[0058] In this embodiment, when the device needs to be dismantled according to the needs of the construction site, it is first dismantled using existing external equipment, such as a hydraulic control system provided by large construction equipment. The hydraulic control system can be connected to the oil pipe 162. When the hydraulic control system controls the retraction end of the cylinder 160 through the oil pipe 162 to retract, the connecting head 91 moves upward, which in turn moves the connecting rod 90 upward, causing multiple movable plates 10 to rotate simultaneously. This causes multiple upper extrusion plates 61 and multiple lower extrusion plates 62 to retract simultaneously. Then, by pulling the connecting rod 1 upward, the device can be removed and recycled. When reuse is required, the device is inserted into the soil along the direction of the pointed connector 5. The hydraulic control system is then connected to the oil pipe 162. The hydraulic control system controls the extension end of the cylinder 160 through the oil pipe 162 to extend, which causes the connecting rod 90 to move downward, causing multiple movable plates 10 to rotate simultaneously. This causes multiple upper extrusion plates 61 and multiple lower extrusion plates 62 to expand simultaneously, thus firmly installing the device in the soil space and achieving reuse of the device.

[0059] Overall, by controlling the extension and retraction of the cylinder 160 through the hydraulic control system, the connecting rod 90 can be moved, thereby achieving the simultaneous retraction or expansion of the upper extrusion plate 61 and the lower extrusion plate 62, which enables the overall recycling and reuse of this device.

[0060] In summary, the recyclable and reusable compression and pull-out resistant mechanism proposed in this embodiment features an extrusion and expansion mechanism. An external hydraulic control system controls the upward movement of the connecting rod of the extrusion and expansion mechanism. The connecting rod drives the movable plate to rotate, and the movable plate causes the upper and lower extrusion and expansion plates to retract simultaneously, transforming the extrusion and expansion mechanism into a cylindrical shape, facilitating the removal of the device. When the hydraulic control system controls the connecting rod to move downward, the connecting rod drives the movable plate to rotate, and the movable plate pushes the upper and lower extrusion and expansion plates to expand simultaneously, thus firmly securing the device in the soil and achieving compression and pull-out resistance. Therefore, the entire device can be recycled and reused, reducing the formation of construction waste and avoiding resource waste.

[0061] Furthermore, when the connector in the extrusion mechanism reaches its limit position, that is, when the upper and lower extrusion plates open to their maximum extent simultaneously, the extrusion mechanism is at its dead point. The sides of the multiple movable plates near the connecting rod are all in close contact with the connecting rod, and the sides of the multiple movable plates near the connecting rod are all at the same horizontal position. At this time, the upper and lower extrusion plates cannot retract under any external force, thus ensuring the stability and safety of the device.

[0062] In addition, a power unit is installed, and the extension or retraction of the hydraulic cylinder is controlled by a hydraulic control system, which drives the connecting rod to move up and down. This provides resistance to pulling force for the extrusion mechanism, achieving a pressure-resistant effect. Furthermore, a booster cylinder is installed to provide additional power to the hydraulic cylinder when its output is insufficient, pushing it downwards and thus driving the connecting rod downwards. This further provides resistance to pulling force for the extrusion mechanism, achieving a pressure-resistant effect.

[0063] Overall, this device not only enables complete recycling and reuse, but also achieves better resistance to compression and pull-out.

[0064] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A recyclable and reusable compression and pull-out resistant mechanism, characterized in that, Includes connecting rods and extrusion mechanism; The extrusion expansion mechanism includes an extrusion expansion tube, a connecting rod, multiple upper extrusion expansion plates, multiple lower extrusion expansion plates, and multiple movable plates; One end of the connecting rod is connected to the extrusion tube; The connecting rod is slidably disposed on the inner wall of the extrusion tube; The sidewall of the extrusion tube is provided with a plurality of extrusion grooves, and an upper extrusion plate and a lower extrusion plate are respectively provided in one of the extrusion grooves; The connecting end of the upper extrusion plate is hinged to the side wall of the extrusion tube and is close to the end of the extrusion tube that is connected to the connecting rod; the connecting end of the lower extrusion plate is hinged to the side wall of the extrusion tube and is away from the end of the extrusion tube that is connected to the connecting rod. The extrusion ends of the upper extrusion plate and the lower extrusion plate are positioned opposite each other and maintain a predetermined distance. One end of the movable plate is hinged to the connecting rod, and the other end is hinged to the extrusion ends of both the upper and lower extrusion plates.

2. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 1, characterized in that, It also includes a power device disposed inside the connecting rod, the power device being connected to the connecting rod and used to drive the connecting rod to move up and down to realize the expansion and retraction of the extrusion mechanism.

3. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 2, characterized in that, The power unit includes a hydraulic cylinder and an oil pipe disposed inside the connecting rod. The telescopic end of the hydraulic cylinder is connected to the connecting rod, and the oil pipe is connected to the hydraulic cylinder. A valve is provided on the oil pipe.

4. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 3, characterized in that, The power unit also includes a booster cylinder disposed inside the connecting rod, the booster cylinder being located between the oil cylinder and the oil pipe; the telescopic end of the booster cylinder is connected to the oil cylinder, and the fixed end is connected to the oil pipe.

5. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 1, characterized in that, The extrusion expansion mechanism also includes multiple ear plates, all of which are welded and fixed inside the extrusion expansion tube; the connecting ends of the upper extrusion expansion plate and the lower extrusion expansion plate are hinged to the ear plates via a first rotating shaft.

6. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 5, characterized in that, The extrusion expansion mechanism also includes a plurality of first fixing plates; the plurality of first fixing plates are all welded and fixed to the connecting end of the upper extrusion expansion plate and the lower extrusion expansion plate; the plurality of first fixing plates are all hinged to the plurality of ear plates through the first rotating shaft.

7. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 6, characterized in that, The extrusion expansion mechanism also includes multiple second fixed plates; the multiple second fixed plates are all welded and fixed to the extrusion expansion ends of the upper extrusion expansion plate and the lower extrusion expansion plate; the other end of the movable plate is hinged to the multiple second fixed plates through a second rotating shaft.

8. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 1, characterized in that, The side wall of the connecting rod is provided with multiple limiting grooves; both the upper extrusion plate and the lower extrusion plate are provided with multiple baffles. When the extrusion mechanism is in the retracted state, the multiple baffles are stuck in the multiple limiting grooves; when the extrusion mechanism is in the expanding state, the multiple baffles are moved away from the multiple limiting grooves.

9. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 1, characterized in that, It also includes an external hexagonal connector; one end of the external hexagonal connector is connected to the other end of the connecting rod via a second flange.

10. The recyclable and reusable compression and pull-out resistant mechanism as described in claim 1, characterized in that, It also includes a pointed connector; the pointed connector is connected to the other end of the extrusion mechanism via a third flange.

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