Static pile press mechanism

Abstract

The utility model discloses a static force pile press mechanism relates to static force pile press mechanism technical field, and static force pile press mechanism includes support frame, drive arrangement, down pressure plate, clamping structure and limit structure, wherein, support frame includes two support plates and top plate, and the top of a plurality of support plates is provided with top plate, and drive arrangement sets up in the top of support frame inner chamber, and the output end abuts at the pile body, and down pressure plate sets up in drive arrangement output, is used for abutting at the pile body, and limit structure includes two driving pieces and two abutting components, and two driving pieces set up respectively in the left and right sides of support frame, and are located clamping component's downside, and abutting component includes the cylinder, and the cylinder rotation sets up in the output of driving piece, and two cylinders can be close or away from each other's direction activity. Through adjustable cylinder limit structure, while allowing the pile body micro -adaptive adjustment of lateral constraint force, avoid stress concentration.

Description

Technical Field

[0001] This utility model relates to the technical field of static pile driving mechanism, and in particular to a static pile driving mechanism. Background Technology

[0002] In building construction, static pile driving technology is widely used in the foundation treatment stage. It uses the strong static pressure generated by hydraulic or mechanical means to vertically and continuously press prefabricated piles (usually reinforced concrete piles, such as square piles and pipe piles) into the foundation soil layer until the depth or bearing capacity required by the design is reached.

[0003] Traditional static pile driving construction mainly uses hydraulic jacks as the power source, which has problems such as low construction efficiency, poor safety, and uncontrollable pressure. Especially under complex geological conditions, the pile body is prone to displacement or breakage, affecting the construction quality. Utility Model Content

[0004] The main purpose of this invention is to propose a static pile driving mechanism, which aims to limit the verticality of the pile and prevent the pile from shifting.

[0005] To achieve the above objectives, the static pile driving mechanism proposed in this utility model includes: A support frame includes two support plates and a top plate, with the top plate provided on the top of the plurality of support plates; The driving device is located at the top of the inner cavity of the support frame, and its output end abuts against the pile body; The lower pressure plate is located at the output end of the drive device and is used to abut against the pile body; The clamping structure includes two clamping plates, both of which are movably disposed at the bottom of the lower pressure plate, and the two clamping plates move toward each other in a direction that allows them to move closer to or further away from each other, for clamping the top end of the pile body; The limiting structure includes two driving members and two abutting components. The two driving members are respectively disposed on the left and right sides of the support frame and located on the lower side of the clamping structure. The abutting components include rollers, which are rotatably disposed at the output end of the driving members. The two rollers move in a direction that can move closer to or further away from each other to abut against the side of the pile.

[0006] Preferably, the two clamping plates are arranged in an arc shape on opposite sides, and each of the two clamping plates is provided with a first buffer on opposite sides.

[0007] Preferably, a limit assembly is provided between the lower pressure plate and the clamping plate; The limiting component includes a limiting block and a limiting groove, one of which is disposed at the top of the clamping plate and the other is disposed at the bottom of the lower pressure plate.

[0008] Preferably, the clamping structure further includes: Multiple threaded rods, each having a first thread and a second thread at its two ends, the first thread and the second thread having opposite thread directions, and both the first thread and the second thread passing through two clamping plates respectively; Multiple turntables are respectively set at both ends of each of the threaded rods.

[0009] Preferably, the abutment component further includes: A connecting plate is installed at the output end of the drive component; Two fixing plates are both disposed on the side of the connecting plate away from the driving member; and A rotating rod is installed between the two fixed plates; The roller is mounted on the rotating rod and rotates along the direction of movement of the lower pressure plate.

[0010] Preferably, the connecting plate is provided with a position detection device for detecting the position of the clamping structure.

[0011] Preferably, a second buffer is provided on the outer side of the roller.

[0012] Preferably, the driving device is provided with a distance detection device for detecting the moving distance of the lower pressure plate.

[0013] Preferably, a pressure detection structure is provided at the bottom of the lower pressure plate. The pressure detection structure includes a pressure detection device, which is located at the bottom of the lower pressure plate and is used to detect the pressure borne by the lower pressure plate.

[0014] Preferably, the pressure detection structure includes: Multiple elastic elements, one end of each of the elastic elements being disposed at the bottom of the lower pressure plate: and A movable plate is disposed at the other end of each of the elastic elements and is used to abut against the pile body; The pressure detection device is located between the elastic element and the movable plate.

[0015] In the technical solution provided by this utility model, the limiting structure includes two driving members and two abutting components. The two driving members are respectively disposed on the left and right sides of the support frame and located on the lower side of the clamping structure. The abutting component includes a roller, which is rotatably disposed at the output end of the driving member. The two rollers move in a direction that can approach or move away from each other to abut against the side of the pile. Through the adjustable roller limiting structure, the pile can be slightly adaptively adjusted while maintaining lateral constraint force, thus avoiding stress concentration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A perspective view of an embodiment of the static pile driving mechanism provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the clamping structure; Figure 3 for Figure 1 A schematic diagram of the middle limiting structure.

[0018] Explanation of icon numbers: 1. Support frame; 2. Drive unit; 3. Lower pressure plate; 4. Clamping structure; 41. Clamping plate; 42. Threaded rod; 43. Turntable; 5. Position detection device; 6. Limiting structure; 61. Drive component; 62. Connecting plate; 63. Roller; 64. Rotating rod; 65. Fixing plate; 7. Pressure detection structure; 71. Pressure detection device; 72. Elastic component; 73. Movable plate; 8. Distance detection device; 9. Limiting assembly; 91. Limiting block; 92. Limiting groove.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model provides a static pile driving mechanism. Figures 1 to 3 This is an embodiment of the static pile driving mechanism provided by the present invention.

[0024] Traditional static pile driving often uses hydraulic jacks as the driving device, which has problems such as unstable pressure control and high risk of pile displacement. Especially under complex geological conditions, the pile is prone to tilting or breaking due to uneven stress.

[0025] Please refer to the following: Figures 1 to 3 The static pile driving mechanism includes a support frame 1, a drive device 2, a lower pressure plate 3, a clamping structure 4, and a limiting structure 6. The support frame 1 includes two support plates and a top plate. The top plate is provided on the top of the multiple support plates. The drive device 2 is located at the top of the inner cavity of the support frame 1, and its output end abuts against the pile body. The lower pressure plate 3 is located at the output end of the drive device 2 and is used to abut against the pile body. The clamping structure 4 includes two clamping plates 41, both of which are movably located at the bottom of the lower pressure plate 3. The two clamping plates 41 move in a direction that can approach or move away from each other and are used to clamp the top side of the pile body. The limiting structure 6 includes two drive members 61 and two abutting components. The two drive members 61 are respectively located on the left and right sides of the support frame 1 and are located on the lower side of the clamping structure. The abutting components include rollers 63, which are rotatably located at the output end of the drive members 61. The two rollers 63 move in a direction that can approach or move away from each other and are used to abut against the side of the pile body.

[0026] The arc-shaped clamping plate 41 of the clamping structure 4 refers to the clamping component with a curved surface design in contact with the pile body. Specifically, it can be achieved by using a semi-circular steel plate with a rubber buffer layer. Its curvature matches the outer diameter of the pile body, enhancing clamping stability. The limiting block 91 and limiting groove 92 of the limiting component 9 refer to the positioning structure that fits into each other. Specifically, it can be achieved by using a trapezoidal protrusion and a dovetail groove to ensure the axial positioning accuracy between the clamping structure 4 and the lower pressure plate 3. The roller 63 of the limiting structure 6 refers to a cylindrical component that can rotate around its axis. Specifically, it can be a steel roller 63 with a polyurethane coating. It is connected to the driving component 61 through a rotating rod 64, achieving rolling friction when it comes into contact with the pile body, reducing lateral resistance. The driving component 61 refers to a linear displacement actuator. Specifically, it can be an electric push rod or a hydraulic cylinder, achieving symmetrical movement of the two rollers 63 through synchronous control.

[0027] During pile driving, the drive device 2 pushes the lower pressure plate 3 to apply vertical pressure to the pile body. The arc-shaped clamping plate 41 of the clamping structure 4 maintains a stable clamping state under the constraint of the limiting component 9. When the pile body deviates laterally during the pressing process, the roller 63 of the limiting structure 6 adjusts the spacing through the drive component 61 and continuously abuts against the side of the pile body to form a dynamic constraint. The rotation characteristics of the roller 63 allow the pile body to automatically adjust the contact angle when a small lateral displacement occurs during the vertical pressing process, avoiding surface damage caused by rigid friction. The position detection device 5 monitors the position change of the clamping structure 4 in real time and adjusts the stroke of the drive component 61 accordingly to form a closed-loop control.

[0028] Therefore, in the technical solution provided by this utility model, the limiting structure 6 includes two driving members 61 and two abutting components. The two driving members 61 are respectively arranged on the left and right sides of the support frame 1 and located on the lower side of the clamping structure. The abutting components include rollers 63, which are rotatably arranged at the output end of the driving members 61. The two rollers 63 move in a direction that can approach or move away from each other to abut against the side of the pile. Through the adjustable roller 63 limiting structure 6, the pile body is allowed to make slight adaptive adjustments while maintaining lateral constraint force, thus avoiding stress concentration.

[0029] In order to maintain sufficient clamping force while forming a flexible contact interface, specifically, in the embodiment of this utility model, the opposite sides of the two clamping plates 41 are arranged in an arc shape, and the opposite sides of the two clamping plates 41 are provided with a first buffer.

[0030] The first buffer component refers to a flexible buffer layer set on the clamping contact surface. Specifically, it can be implemented using a rubber pad or spring support structure with a thickness of 5-10 mm. Its elastic modulus is controlled within the range of 0.5-1.5 MPa to balance the buffering effect and clamping stiffness. When the clamping plate 41 approaches the pile body, the arc-shaped structure can fit the outer surface of the pile body, increase the contact area and evenly distribute the clamping force. During the pile driving operation, the first buffer component absorbs the local stress concentration caused by the unevenness of the pile body surface through elastic deformation, and at the same time prevents the sudden change of clamping force from causing indentation damage to the pile body surface. Under dynamic pile driving conditions, the damping characteristics of the buffer component can suppress the vibration transmission of the clamping mechanism and maintain the stability of the clamping force.

[0031] In order to accurately control the movement trajectory of the clamping plate 41 and eliminate the crushing damage to the pile surface caused by the tilt of the clamping plate 41 during the clamping process, in the embodiment of this utility model, a limiting component 9 is provided between the lower pressure plate 3 and the clamping plate 41; the limiting component 9 includes a limiting block 91 and a limiting groove 92, one of which is provided at the top of the clamping plate 41 and the other is provided at the bottom of the lower pressure plate 3.

[0032] The limiting block 91 refers to the protruding structure set on the lower pressure plate 3 or the clamping plate 41. It can be implemented by welding or bolting a metal block, and its cross-sectional shape can be rectangular, trapezoidal, or dovetail-shaped. The limiting groove 92 refers to the groove structure that matches the shape of the limiting block 91. It can be formed by machining or casting. The depth of the groove can be slightly greater than the height of the limiting block 91 to accommodate assembly errors. The two cooperate to form a sliding pair, which restricts the movement trajectory of the clamping plate 41 when it moves laterally, preventing the clamping plate 41 from undergoing longitudinal displacement or deflection during clamping. When the clamping structure 4 performs the clamping action, the clamping plate 41 moves laterally along the bottom of the lower pressure plate 3 under the action of the driving device 2. The cooperation between the limiting block 91 and the limiting groove 92 forms a guiding constraint, so that the clamping plate 41 can only move in a preset direction.

[0033] In this scheme, the bidirectional threaded rod 42 is used to achieve synchronous driving on both sides and symmetrical distribution of clamping force, which effectively improves the positioning accuracy of the pile. Specifically, the clamping structure 4 also includes multiple threaded rods 42 and multiple turntables 43. The two ends of the threaded rod 42 are respectively provided with a first thread and a second thread. The first thread and the second thread have opposite thread directions, and the first thread and the second thread pass through two clamping plates 41 respectively. Multiple turntables 43 are respectively provided at both ends of each threaded rod 42.

[0034] When it is necessary to adjust the spacing of the clamping plates 41, the threaded rod 42 is rotated by rotating the turntable 43. Since the threads at both ends of the threaded rod 42 are in opposite directions, the clamping plates 41 move in opposite directions under the action of the threads, achieving synchronous opening and closing. For example, when the threaded rod 42 is rotated clockwise, the left-hand threaded section drives the left clamping plate 41 to move to the right, and the right-hand threaded section drives the right clamping plate 41 to move to the left, thus reducing the clamping space; counterclockwise rotation increases the clamping space. This structure can form multi-point synchronous drive by distributing multiple threaded rods 42 along the length of the clamping plates 41, avoiding clamping deviation caused by single-point force.

[0035] In order to enable the abutting component to have a self-rotation function and effectively reduce the coefficient of friction, in the technical solution of this utility model, the abutting component also includes a connecting plate 62, two fixing plates 65 and a rotating rod 64. The connecting plate 62 is installed at the output end of the driving component 61, the two fixing plates 65 are both set on the side of the connecting plate 62 away from the driving component 61, the rotating rod 64 is installed between the two fixing plates 65, and the roller 63 is set on the rotating rod 64 and rotates along the movement direction of the lower pressure plate 3.

[0036] When the output end of the drive unit 61 pushes the connecting plate 62 to move laterally, the fixed plate 65 moves synchronously with the connecting plate 62, driving the rotating rod 64 and the roller 63 to approach the pile body in the horizontal direction. When the roller 63 contacts the side of the pile body, the rotating rod 64 maintains stable rotation under the constraint of the fixed plate 65, so that the roller 63 can rotate with the vertical movement of the lower pressure plate 3, thereby reducing the frictional resistance generated during the downward pressing of the pile body. The rigid connection between the connecting plate 62 and the drive unit 61 ensures the power transmission efficiency, and the symmetrical arrangement of the two fixed plates 65 enhances the load-bearing stability of the rotating rod 64.

[0037] Furthermore, a position detection device 5 is provided on the connecting plate 62 to detect the position of the clamping structure 4. The position detection device 5 is a sensing device that can acquire the spatial coordinates of the clamping structure 4 in real time. Specifically, it can be implemented using a photoelectric sensor or an ultrasonic sensor. It calculates the distance between the clamping structure 4 and the detection device by emitting signals and receiving reflected waves.

[0038] When the drive unit 61 pushes the connecting plate 62 to move vertically, the position detection device 5 calculates the real-time position coordinates of the clamping structure 4 relative to the detection reference surface by emitting a high-frequency signal and receiving the echo reflected by the clamping structure 4. This coordinate data is transmitted to the control system through a signal line. When the clamping structure 4 is detected to deviate from the preset motion trajectory, the system automatically adjusts the output stroke of the drive unit 61 to keep the clamping structure 4 within the allowable position deviation range. During the pile driving operation, the device continuously monitors the lifting height of the clamping structure 4 and triggers a stop signal when the preset pile driving depth threshold is reached.

[0039] Furthermore, a second buffer is provided on the outer side of the roller 63. The second buffer is an elastic material layer wrapped around the outer surface of the roller 63, which can be made of rubber or polyurethane material, and absorbs the impact force generated during the pile driving process through elastic deformation.

[0040] The second buffer is tightly wrapped around the outside of the metal base of the roller 63 in the form of an annular sleeve. When the roller 63 contacts the side of the pile, the buffer offsets the rigid collision between the pile and the roller 63 through its own elastic deformation. During the pile driving operation, the pile may shift laterally due to changes in geological conditions. At this time, the buffer absorbs the impact energy brought by the shift through compression deformation, avoiding the pile surface from being scratched by the metal roller 63. The material thickness of the buffer can be adjusted according to the actual working conditions. For example, high-density rubber is used in hard rock areas to enhance impact resistance, and low-hardness polyurethane is used in soft soil areas to improve buffer performance.

[0041] Traditional pile driving devices rely on manual observation of hydraulic pressure gauge readings to indirectly determine the pile driving depth, which has problems of visual error and response lag. In order to eliminate the interference of hydraulic system pressure fluctuations on depth judgment and realize fully digital monitoring of the pile driving process, in this embodiment of the utility model, a distance detection device 8 is provided on the drive device 2 to detect the moving distance of the lower pressure plate 3.

[0042] The distance detection device 8 refers to a measuring device that can monitor the displacement of the lower pressure plate 3 in real time. Specifically, it can be implemented by using a laser rangefinder or an ultrasonic sensor. Its function is to obtain the motion data of the lower pressure plate 3 in the vertical direction through a non-contact measurement method.

[0043] The distance detection device 8 is integrated into the output end of the drive device 2 or the fixed bracket. It collects the displacement change data of the lower pressure plate 3 in real time during the pile driving process. When the drive device 2 pushes the lower pressure plate 3 to apply pressure to the pile body, the detection device continuously records the movement trajectory of the lower pressure plate 3 and transmits the data synchronously to the control system. The operator can observe the pile driving depth in real time through the display interface. When the movement distance reaches the preset threshold, the drive device 2 is stopped immediately to ensure that the pile body accurately reaches the bearing layer required by the design. In the staged pile driving operation, the device can also record the displacement of each pile driving in stages, providing an accurate depth reference for the pile splicing welding process.

[0044] Furthermore, a pressure detection structure 7 is provided at the bottom of the lower pressure plate 3. The pressure detection structure 7 includes a pressure detection device 71, which is located at the bottom of the lower pressure plate 3 and is used to detect the pressure borne by the lower pressure plate 3.

[0045] When the lower pressure plate 3 applies vertical pressure to the pile body under the action of the drive device 2, the movable plate 73 contacts the pile body and is subjected to a reaction force. This reaction force is transmitted to the pressure detection device 71 through the elastic element 72. The pressure detection device 71 feeds back the pressure data detected in real time to the control system. The operator can adjust the output of the drive device 2 according to the pressure changes to ensure that the pressure is always within the preset range during the pile driving process. For example, when the pressure exceeds the set threshold, the system can automatically reduce the output of the drive device 2 to avoid the pile body from breaking due to excessive pressure; when the pressure is insufficient, the system can increase the output to ensure that the pile driving depth meets the standard.

[0046] Furthermore, the pressure detection structure 7 includes multiple elastic elements 72 and a movable plate 73. One end of each elastic element 72 is located at the bottom of the lower pressure plate 3, and the movable plate 73 is located at the other end of each elastic element 72 for abutting against the pile body. The pressure detection device 71 is located between the elastic element 72 and the movable plate 73.

[0047] The elastic element 72 refers to the component that can produce elastic deformation and return to its original shape. Specifically, it can be implemented by a helical spring, a disc spring, or a rubber pad. It is used to buffer the impact force between the lower pressure plate 3 and the pile body and to transmit pressure. The movable plate 73 refers to the pressure-bearing component that is in direct contact with the pile body. Specifically, it can be implemented by a steel plate or an alloy plate. It is used to evenly distribute the pressure applied by the lower pressure plate 3 and to protect the surface of the pile body.

[0048] When the drive device 2 pushes the lower pressure plate 3 downward, the movable plate 73 first contacts the top surface of the pile. At this time, the elastic element 72 is gradually compressed under pressure. The pressure detection device 71 collects the pressure data between the elastic element 72 and the movable plate 73 in real time. The operator adjusts the output pressure of the drive device 2 according to the feedback signal of the pressure detection device 71 to ensure that the pressure value is always within the set range during the pile driving process. For example, when the soil layer is relatively soft in the early stage of pile driving, the pressure detection device 71 detects that the pressure value is too low, and the drive device 2 can appropriately increase the output pressure. When the pile enters the hard bearing layer, the pressure detection device 71 detects a sudden increase in pressure, and the drive device 2 immediately reduces the output pressure to avoid pile breakage.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A static pile driving mechanism, characterized in that, include: A support frame includes two support plates and a top plate, with the top plate provided on the top of the plurality of support plates; The driving device is located at the top of the inner cavity of the support frame, and its output end abuts against the pile body; The lower pressure plate is located at the output end of the drive device and is used to abut against the pile body; The clamping structure includes two clamping plates, both of which are movably disposed at the bottom of the lower pressure plate, and the two clamping plates move toward each other in a direction that allows them to move closer to or further away from each other, for clamping the top end of the pile body; The limiting structure includes two driving members and two abutting components. The two driving members are respectively disposed on the left and right sides of the support frame and located on the lower side of the clamping structure. The abutting components include rollers, which are rotatably disposed at the output end of the driving members. The two rollers move in a direction that can move closer to or further away from each other to abut against the side of the pile.

2. The static pile driving mechanism as described in claim 1, characterized in that, The two clamping plates are arranged in an arc shape on opposite sides, and each of the two clamping plates is provided with a first buffer on opposite sides.

3. The static pile driving mechanism as described in claim 1, characterized in that, A limit assembly is provided between the lower pressure plate and the clamping plate; The limiting component includes a limiting block and a limiting groove, one of which is disposed at the top of the clamping plate and the other is disposed at the bottom of the lower pressure plate.

4. The static pile driving mechanism as described in claim 1, characterized in that, The clamping structure also includes: Multiple threaded rods, each having a first thread and a second thread at its two ends, the first thread and the second thread having opposite thread directions, and both the first thread and the second thread passing through two clamping plates respectively; Multiple turntables are respectively set at both ends of each of the threaded rods.

5. The static pile driving mechanism as described in claim 1, characterized in that, The abutment component also includes: A connecting plate is installed at the output end of the drive component; Two fixing plates are both disposed on the side of the connecting plate away from the driving member; and A rotating rod is installed between the two fixed plates; The roller is mounted on the rotating rod and rotates along the direction of movement of the lower pressure plate.

6. The static pile driving mechanism as described in claim 5, characterized in that, The connecting plate is equipped with a position detection device for detecting the position of the clamping structure.

7. The static pile driving mechanism as described in claim 5, characterized in that, A second buffer is provided on the outer side of the roller.

8. The static pile driving mechanism as described in claim 1, characterized in that, The drive unit is equipped with a distance detection device for detecting the moving distance of the lower pressure plate.

9. The static pile driving mechanism as described in claim 1, characterized in that, The bottom of the lower pressure plate is provided with a pressure detection structure, which includes a pressure detection device. The pressure detection device is located at the bottom of the lower pressure plate and is used to detect the pressure borne by the lower pressure plate.

10. The static pile driving mechanism as described in claim 9, characterized in that, The pressure detection structure includes: Multiple elastic elements, one end of each of the elastic elements being disposed at the bottom of the lower pressure plate: and A movable plate is disposed at the other end of each of the elastic elements and is used to abut against the pile body; The pressure detection device is located between the elastic element and the movable plate.

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