Static pressure pile construction device

Abstract

The present application belongs to the technical field of pile foundation construction, and particularly relates to a static pressure pile construction device, which comprises a pile pressing frame, a plurality of support arms, a lifting seat and a plurality of traction machine units. A sleeve and a plurality of pairs of vertical arms are arranged on the pile pressing frame. A plurality of spherical convex ribs with apexes capable of being distributed on the same cylindrical surface coaxial with the sleeve are formed on the inner wall of the sleeve. A vertically arranged translation sliding seat is arranged between each pair of vertical arms. The support arms are arranged in the profiled groove of the translation sliding seat and are provided with a plurality of tooth blocks I on the inner side. A plurality of stepped profiled holes and a plurality of cross arms are arranged on the lifting seat. The cross arms are provided with tooth block parts capable of being inserted and matched with the tooth blocks I. The traction machine units are fixed on the vertical arms, and the free ends of the cables thereof are vertically downwardly extended and are fixedly connected with guide rods. The cross arms are provided with smooth surface through holes for the downward penetration of the guide rods, and are sleeved with buffer springs. The present application can constrain the perpendicularity of the precast pile when the precast pile is pushed and pressed, and can inhibit the excessive deflection of the precast pile.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pile foundation construction, and particularly relates to a static pressure pile construction device. BACKGROUND

[0002] The static pressure pile is a method of engineering pile foundation construction, and the static pressure pile method construction is a pile sinking process of pressing the precast pile into the soil through the counterforce provided by the pile pressing mechanism of the static pressure pile machine and the counterweight on the machine frame. The static pressure pile construction has the advantages of avoiding the vibration, noise and pollution caused by hammering pile, and has the advantages of no damage to the pile, no noise, no vibration and no impact force during construction. The anchor rod static pressure pile technology is an operation mode of connecting the pile pressing frame with the building foundation through the anchor rod, pressing the precast pile into the foundation in sections by using the counterforce provided by the combination of the pushing and pressing device such as the jack and the heavy load frame, and then connecting the pile and the foundation together, which is widely applied in the current construction. However, in the existing anchor rod static pressure pile construction process, the pile pressing construction device used does not have the verticality maintaining function, and the precast pile is prone to excessive deflection during the static pressure operation, which adversely affects the static pressure construction effect of the precast pile. SUMMARY

[0003] In view of the above problems, the present application provides a static pressure pile construction device which can constrain the verticality of the precast pile during the process of pushing down the precast pile, help to ensure that the verticality of the pile is always in good condition, and inhibit the excessive deflection of the precast pile.

[0004] The technical solution adopted by the present application to solve the technical problem is: a static pressure pile construction device, comprising a pile pressing frame provided with an axial hole with an axial line in the vertical direction, a jack unit, a plurality of support arms, a lifting seat, and a plurality of traction machine units. The precast pile to be pressed down into the foundation extends to the foundation through the axial hole.

[0005] On the pile pressing frame, a sleeve and a plurality of pairs of vertical arms distributed around the sleeve are fixedly arranged. The sleeve is coaxial with the axial hole provided on the pile pressing frame and vertically penetrates through the axial hole, and the inner diameter of the axial hole is greater than the inner diameter of the sleeve. Each pair of vertical arms is correspondingly matched with each support arm. A plurality of spherical convex ribs are formed on the inner circumferential surface of the sleeve and vertically and alternately distributed, and the apexes of each spherical convex rib are distributed on the same circumferential surface / cylinder surface coaxial with the sleeve. A translation sliding seat arranged in the vertical direction is arranged between each pair of vertical arms, and the translation sliding seat can reciprocate along the radial direction relative to the corresponding vertical arm. A length extending in the vertical direction and radially penetrating type groove is formed on the translation sliding seat.

[0006] The support arm is a strip-shaped plate body vertically arranged in the type groove, and can move simultaneously with the translation sliding seat. A plurality of tooth blocks I are vertically and alternately distributed on the inner side surface of the support arm.

[0007] On the lifting seat, a multi-stage hole corresponding to the arrangement of the jack unit is arranged directly above the sleeve, and a plurality of cross arms corresponding to the support arms are arranged. The free end of the cross arm is formed with a tooth block part selectively matched with the plurality of tooth blocks. When the support arm and the translation slide move outward in the radial direction, the tooth block part can be converted from the plug-in connection state to the disengaged state with the plurality of tooth blocks. Conversely, when the support arm and the translation slide move inward in the radial direction, the tooth block part can be converted from the disengaged state to the plug-in connection state with the plurality of tooth blocks. Then, by means of the plug-in connection structure between the tooth block part and the plurality of tooth blocks, a switchable fixed connection relationship can be established between the support arm and the lifting seat, so as to fix the lifting seat at different height positions.

[0008] The traction unit is fixed on the upper part of the pair of vertical arms and is arranged above each cross arm one by one. The free end of the cable on the traction unit extends vertically downward and is fixedly connected with a guide rod. The cross arm is provided with a smooth through hole for the guide rod to pass downward, and a buffer spring is sleeved on the section of the guide rod passing downward below the cross arm. The upper end of the buffer spring is in contact with the cross arm, and the lower end is in contact with the radial flange arranged on the guide rod.

[0009] In the above scheme, through the synchronous movement of the plurality of support arms, in association with the guiding action of the traction unit, the movement path of the lifting seat is constrained, so that the multi-stage hole and the sleeve can maintain a good upward and downward alignment state and are not easily deviated due to position adjustment. At the same time, the height position of the jack unit and the position of the jack relative to the shaft hole arranged on the pile press are limited by the lifting seat, so that the jack body of the jack unit maintains a good upward and downward alignment state relative to the sleeve, and the downward pressure direction of the jack acting on the precast pile is stable. Then, the purpose of comprehensively restraining the downward pressure direction of the jack to maintain a good vertical state during the operation process is achieved. In addition, the downward movement direction of the precast pile can be stably constrained by the sleeve and the spherical protrusions on the inner wall thereof, and ultimately the purpose of restraining the vertical movement direction of the precast pile during the downward pushing process of the precast pile is achieved, so as to ensure that the verticality of the downward precast pile always maintains a stable and good state, and the excessive deviation of the precast pile is inhibited.

[0010] Optionally, the upper part of the pair of vertical arms is provided with an L-shaped support plate. The vertical plate of the L-shaped support plate is connected to the upper part of the pair of vertical arms, and the free end of the horizontal plate extends above the sleeve.

[0011] The traction unit is fixed on the horizontal plate, and the free end of its cable extends vertically downward after passing through the pulley block fixed on the horizontal plate and the hole arranged on the horizontal plate, and is connected with the guide rod.

[0012] Optionally, the lower part of the translation slide is matched with the convex rail structure arranged on the upper end surface of the pile press frame, and the upper part is matched with the convex rail structure arranged on the horizontal plate, so as to constrain the radial movement direction of the translation slide. A pair of telescopic cylinders are arranged on the upper part of the pile press frame, and the free end of the cylinder rod of the pair of telescopic cylinders is fixedly connected with the lower part of the translation slide, and a pair of telescopic cylinders are arranged on the upper part of the vertical plate, and the free end of the cylinder rod of the pair of telescopic cylinders is fixedly connected with the upper part of the translation slide, and under the synchronous driving of the upper and lower pairs of telescopic cylinders, the purpose of realizing the action control of driving the translation slide to move stably relative to the vertical arm is achieved, so that the translation slide can always have good verticality during movement.

[0013] Optionally, the pairs of telescopic cylinders arranged on the upper and lower ends of each translation slide can synchronously perform telescopic action, so that the plurality of translation slides can synchronously move radially outward and synchronously move radially inward, so as to synchronously control the matching state between the tooth block part and the plurality of tooth blocks I, that is, the tooth block part of each horizontal arm end part and the plurality of tooth blocks I on the support arm close to each other can be simultaneously switched between the interlocking matching state and the disengaged interlocking matching state.

[0014] The telescopic cylinder can be a plurality of pairs of telescopic hydraulic cylinders or telescopic pneumatic cylinders arranged in the hydraulic assembly system.

[0015] Optionally, a plurality of tooth blocks II vertically and alternately distributed are formed on the tooth block part. Each tooth block II can be inserted into between two adjacent tooth blocks I respectively, so as to establish a fixed connection relationship between the support arm and the lifting seat, and achieve the purpose of fixing the lifting seat at a certain height position.

[0016] Optionally, an outward convex arc surface part I is formed at the upper side edge of the free end of the tooth block I, and an outward convex arc surface part II is formed at the lower side edge of the free end of the tooth block II. When the tooth block I moves towards the tooth block II, the arc surface part II can contact the arc surface part I, and guide the tooth block II to be inserted between two adjacent tooth blocks I.

[0017] Optionally, a plurality of edge plates vertically and alternately distributed and horizontally extending are arranged on the two opposite vertical wall surfaces of the groove, and the edge plates extend from the outer port of the groove to the middle position; correspondingly, a plurality of groove structures capable of interlocking matching with the edge plates are arranged on the two vertical wall surfaces of the support arm, and the inner end of the groove structure is arranged as a closed end. The inner end side of the edge plate is inserted into the groove structure.

[0018] Screw column bodies horizontally extending into the groove are arranged on the upper end and the lower end of the translation slide; correspondingly, a plurality of horizontal multi-stage through holes I are arranged on the upper end and the lower end of the support arm; the screw column bodies can extend into the multi-stage through holes I, springs are sleeved on a section of the screw column bodies in the multi-stage through holes I, and nuts are matched.

[0019] Optionally, the vertical extension height of the vertical arm is less than the vertical extension height of the translation slide, and greater than 1 / 2 of the vertical extension height of the translation slide.

[0020] Optionally, the number of the cross arms is four, and the cross arms are distributed in a cross state; the number of the support arms is four, and the support arms are oppositely arranged at the free end sides of the cross arms.

[0021] Optionally, a plurality of convex tracks one extending along the transverse direction and vertically arranged are arranged on the inner wall of the vertical arm; a plurality of convex tracks two are arranged on the main body of the translation slide; the convex track one is arranged between two adjacent convex tracks two. Such design can improve the stability and reliability of the vertical setting state of the translation slide, thereby helping to ensure that the vertical setting state of the support arm is stable and reliable.

[0022] The present application has the advantages that: the present application can comprehensively constrain the perpendicularity of the stress direction of the precast pile and the perpendicularity of the moving direction of the precast pile in the process of pushing and pressing the precast pile downward, which helps to ensure that the pile pressing perpendicularity always keeps in good condition in the process of pressing downward, and can inhibit the excessive deflection of the precast pile in the process of pressing downward, thereby ensuring the stability and reliability of the static pressure construction effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the front view cross-sectional structure of the present application.

[0024] Figure 2 It is a schematic view of the front view cross-sectional structure of the present application. Figure 1 It is a schematic view of the front view cross-sectional structure of the present application.

[0025] Figure 3 It is a schematic view of the front view cross-sectional structure of the present application. Figure 1 It is a schematic view of the front view cross-sectional structure of the present application.

[0026] Figure 4 It is a schematic view of the front view cross-sectional structure of the present application.

[0027] Figure 5 It is a schematic view of the front view cross-sectional structure of the present application. Figure 4 It is a schematic view of the front view cross-sectional structure of the present application.

[0028] Figure 6 It is a schematic view of the front view cross-sectional structure of the present application.

[0029] In the diagram: 10 Piling frame, 11 Sleeve, 111 Spherical rib, 12 Vertical arm, 121 L-shaped support plate, 1211 Vertical plate, 1212 Horizontal plate, 1213 Hole, 122 Telescopic cylinder, 13 Translation slide, 131 Slot, 132 Edge plate, 133 Stud, 134 Spring, 135 Nut; 20 Support arm, 21 Tooth block one, 211 Arc surface one, 212 Reverse thrust bearing surface one, 2 2. Multi-stage through hole one; 30. Lifting seat; 31. Multi-stage hole; 32. I-shaped cross arm; 321. Web plate; 322. Wing plate; 3221. Flange body; 33. Tooth block part; 331. Tooth block two; 3311. Arc surface two; 3312. Reverse thrust force surface two; 34. Smooth through hole; 341. Countersunk hole part; 40. Traction machine unit; 41. Cable; 42. Pulley block; 43. Guide rod; 431. Radial flange; 44. Buffer spring. Detailed Implementation

[0030] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0031] like Figures 1 to 6 The static pressure pile construction device shown includes a pile driving frame 10, a jack unit, four support arms 20, a lifting seat 30, four traction machine units 40, and a control unit.

[0032] The main structure of the pile driving frame 10 (including the location of its axial hole, specific structural form, and other features), as well as the form and structure of the jack unit, and the technical features such as the relative location requirements of the jack body and the axial hole on the pile driving frame 10, can all refer to the existing technology and will not be elaborated here.

[0033] In this application, innovatively, a sleeve 11 is fixedly installed on the pile driving frame 10, which is coaxial with and vertically connected to the central hole on the pile driving frame 10. Four pairs of upright arms 12 are fixedly installed around the sleeve 11, and a translational slide 13 is arranged between each pair of upright arms 12. Each pair of upright arms 12 corresponds to and matches each support arm 20.

[0034] A plurality of spherical convex ribs 111 (or arc convex ribs) are vertically and alternately arranged on the inner circumferential surface of the sleeve 11, and the vertexes of the spherical convex ribs 111 are arranged on the same circumferential surface / cylinder surface coaxial with the sleeve 11. Specifically, the spherical convex ribs 111 can be formed as annular convex ribs, and the inner circumferential surface of the annular convex rib is formed as a spherical surface or an arc surface, and the vertexes of the spherical convex ribs 111 are formed as an annular surface, and the annular surfaces of the plurality of spherical convex ribs 111 are arranged on the same cylinder surface.

[0035] The translation slide 13 is arranged in the vertical direction between the two standing arms 12 in each pair, and the translation slide 13 can reciprocate linearly in the radial direction relative to the respective pair of standing arms 12. The translation slide 13 is formed with a type groove 131 extending in the vertical direction and penetrating in the radial direction, i.e., the depth of the type groove 131 penetrates in the radial direction.

[0036] An L-shaped support plate 121 is arranged at the upper portion of each pair of two standing arms 12. The vertical plate 1211 of the L-shaped support plate 121 is connected to the upper portion of the two standing arms 12 in each pair, and the free end of the horizontal plate 1212 extends above or near the top of the sleeve 11. The vertical extension height of the standing arm 12 is less than the vertical extension height of the translation slide 13, and the vertical extension height of the standing arm 12 is greater than 1 / 2 of the vertical extension height of the translation slide 13, which can be seen from Figure 1 Figure 6 The two standing arms 12 in each pair constrain the reciprocating movement direction of the translation slide 13, and support the lower portion of the translation slide 13 to maintain a good vertical arrangement state.

[0037] The lower portion of the translation slide 13 is matched with the convex rail structure arranged on the upper end surface of the pile press 10, and the upper portion is matched with the convex rail structure arranged on the horizontal plate 1212. Meanwhile, a pair of telescopic cylinders 122 are arranged on the upper portion of the pile press 10, and the free end of the cylinder rod of the pair of telescopic cylinders 122 is fixedly connected to the lower portion of the translation slide 13, and a pair of telescopic cylinders 122 are arranged on the upper portion of the vertical plate 1211, and the free end of the cylinder rod of the pair of telescopic cylinders 122 is fixedly connected to the upper portion of the translation slide 13, so that the translation slide 13 can be driven to reciprocate smoothly relative to the standing arm 12 under the synchronous driving of the upper and lower pairs of telescopic cylinders 122.

[0038] ​In addition, the relative surfaces between the vertical arm 12 and the main body of the translation slide 13 can be associated by matching convex rail structures to further improve the constraint guiding ability of the vertical arm 12 to the reciprocating movement direction of the translation slide 13, improve reliability and stability, and also increase the carrying capacity (vertical support) of the translation slide 13. For example, a plurality of convex rail one can be arranged on the inner wall of the vertical arm 12, extending in the transverse (radial) direction and arranged vertically, a plurality of convex rail two (extending in the transverse / radial direction and arranged vertically) can be arranged on the main body of the translation slide 13, and each convex rail one can be arranged between two adjacent convex rail two, thereby forming a guiding and supporting matching structure between the convex rail one and the convex rail two.

[0039] The support arm 20 is a strip-shaped plate body vertically arranged in the mold groove 131 and can move simultaneously with the translation slide 13. A plurality of tooth blocks one 21 are vertically and alternately arranged on the inner end surface of the support arm 20.

[0040] On the lifting seat 30, a plurality of stepped holes 31 for fixing the jack unit (or the jack body in the jack unit) are arranged, and the stepped holes 31 are arranged above the sleeve 11. A plurality of H-shaped cross arms 32 corresponding to the support arm 20 are arranged on the outer wall surface of the lifting seat 30, and a tooth block part 33 is formed at the free end of the H-shaped cross arm 32. The free end of the tooth block part 33 is formed with a plurality of tooth blocks two 331 arranged vertically and alternately. The plurality of tooth blocks two 331 can be inserted into the adjacent two tooth blocks one 21, respectively.

[0041] The telescopic cylinders 122 can be multiple pairs of hydraulic telescopic cylinders arranged in the hydraulic assembly system. The multiple pairs of hydraulic telescopic cylinders arranged at the upper and lower ends of each of the translation slides 13 can be synchronously telescoped to move the multiple translation slides 13 synchronously radially outward and synchronously radially inward to control the matching state between each of the tooth block portions 33 provided at the ends of the I-shaped cross arms 32 and the multiple tooth blocks I 21 provided on the adjacent support arms 20, that is, to selectively switch the tooth block portions 33 and the multiple tooth blocks I 21 provided on the adjacent support arms 20 between the state of being inserted and matched and the state of being separated and matched to control the stability and reliability of the relative position of the multiple stepped holes 31 (or the jack bodies in the jack unit) on the lifting seat 30 relative to the sleeve 11, so that the axial perpendicularity of the multiple stepped holes 31 (or the axial perpendicularity of the jack) and the axial perpendicularity of the sleeve 11 do not deviate too much during the lifting movement of the lifting seat 30, so that the direction of the downward pressure force is close to the axis of the precast pile. The ideal relative state between the axial extension direction of the multiple stepped holes 31 and the axial extension direction of the sleeve 11 is that they coincide in the vertical direction, and at this time the direction of the downward pressure force of the jack is almost coincident with the axis of the precast pile.

[0042] Under the drive of the multiple pairs of telescopic cylinders 122, the multiple support arms 20 and the matching translation slides 13 can be moved radially outward at the same time, and each of the tooth block portions 33 (or multiple tooth blocks II 331, the same below) can be switched from the inserted and matched state to the separated state at the same time. Conversely, when the multiple support arms 20 and the matching translation slides 13 are moved radially inward at the same time, each of the tooth block portions 33 can be switched from the separated state to the inserted and matched state at the same time. Then, by means of the inserted and matched structure between each of the tooth block portions 33 and the multiple tooth blocks I 21, a switchable fixed connection relationship can be established between the multiple support arms 20 and the lifting seat 30 to fix the lifting seat 30 at different height positions and control the perpendicularity of the moving direction, that is, to control the height position and the perpendicularity of the falling direction of the jack unit. After the jack body in the jack unit reaches the telescopic stroke limit in operation, the height position is adjusted to enable the jack body to perform the downward pushing operation again.

[0043] The four traction machine units 40 are fixed on the horizontal plates 1212 of the L-shaped support plates 121 provided on the upper parts of the four pairs of vertical arms 12, and are arranged above each of the I-shaped cross arms 32 one by one, as shown inFigure 1 、 Figure 4 、 Figure 6 .

[0044] The traction machine unit 40 comprises a traction machine body (also referred to as a cable winding machine body or a wire winding machine body) and a control box.

[0045] The cable 41 free end on the traction machine unit 40 passes through a pulley block 42 fixed on the horizontal plate 1212 and extends vertically downward after passing through a type hole 1213 provided on the horizontal plate 1212, and is fixedly connected with a guide rod 43.

[0046] A smooth hole 34 corresponding to the guide rod 43 is formed on the wing plate 322 of the I-shaped horizontal arm 32. The guide rod 43 can pass through the smooth hole 34 downward and extend downward relative to the I-shaped horizontal arm 32, and a buffer spring 44 is sleeved on a section of the guide rod 43 extending out of the I-shaped horizontal arm 32. Specifically, the smooth hole 34 is a split hole structure formed on the two wing plates 322 of the I-shaped horizontal arm 32 and vertically opposite. The upper end of the guide rod 43 is above the wing plate 322 located above, and the lower end passes through the wing plate 322 located below; a spacing is formed between the outer wall of the guide rod 43 and the web 321 of the I-shaped horizontal arm 32. The upper end of the buffer spring 44 is in contact with the lower end surface of the wing plate 322, and the lower end is in contact with a radial flange 431 provided at the lower end of the guide rod 43. See Figure 1 、 Figures 3 to 5 A counterbore portion 341 is formed at the lower end of the smooth hole 34, and the upper end of the buffer spring 44 extends into the counterbore portion 341.

[0047] As shown in Figures 4 to 5 To make the buffer spring 44 have a larger radial dimension, i.e., the spring wire can be relatively thick, while reducing the width of the I-shaped horizontal arm 32, a transversely extending flange body 3221 can be provided on the wing plate 322 to increase the width of the wing plate 322 at the local position, and the smooth hole 34, the guide rod 43 and the buffer spring 44 are correspondingly arranged at the flange body 3221.

[0048] The traction machine unit 40 is arranged corresponding to each I-shaped horizontal arm 32, so that the lifting seat 30 can be simultaneously pulled from multiple directions by multiple cables 41; at the same time, the guide rod 43 is connected at the lower part of the cable 41, and the buffer spring 44 is arranged, to constrain the falling direction and speed when the lifting seat 30 is disconnected from the support arm 20, to slow down the free falling speed, impact strength and control the falling stroke size and other physical quantities of the lifting seat 30 under the action of its own gravity, so that the lifting seat 30 can move smoothly and slowly.

[0049] After the lifting seat 30 (and the jack body of the jack unit) is adjusted to a new height position (at which time, the buffer spring 44 is in a state of being significantly compressed), the hoist unit 40 is started to release a certain length of cable 41 to substantially restore the buffer spring 44 to a free stretching state, in preparation for the next buffer function. After the lifting seat 30 (and the jack body of the jack unit) falls to the lowest position, the lifting seat 30 (and the jack body of the jack unit) can also be lifted to the highest position by the hoist unit 40.

[0050] When the cross arm is the I-shaped cross arm 32, as shown in Figures 3 to 5 both sides of the wing plate 322 are configured with cable 41, guide rod 43, buffer spring 44, etc. The configured hoist unit 40 can contain two winding rollers driven coaxially, and the cable 41 on the two winding rollers is connected to the wing plate 322 on both sides, respectively.

[0051] As shown in Figures 1 to 2 , an outward convex arc surface part one 211 is formed at the upper side edge of the free end of the tooth block one 21, and an outward convex arc surface part two 3311 is formed at the lower side edge of the free end of the tooth block two 331. When the tooth block one 21 moves towards the tooth block two 331, the arc surface part two 3311 can be in contact with the arc surface part one 211, and can guide the tooth block two 331 to be inserted between two adjacent tooth block one 21, so that the four cross arms of the lifting seat 30 and the four support arms 20 are smoothly connected in a plug-in connection relationship, and the lifting seat 30 is fixed at a certain height position.

[0052] By providing the arc surface part one 211 and the arc surface part two 3311, the condition that the tooth block two 331 at the end of the cross arm and the tooth block one 21 on the support arm 20 are smoothly connected together in plug-in connection can be improved. Because the height position of the lifting seat 30 is adjusted, first, the lifting seat 30 is lowered to the vicinity of the expected height position by means of the cable 41 and the buffer spring 44, at which time the lifting seat 30 is in an elastic floating state in the vertical direction, when the tooth block one 21 moves towards the tooth block two 331, a small amplitude change in the height position of the lifting seat 30 can be caused under the contact guiding action of the arc surface part two 3311 and the arc surface part one 211, so as to smoothly insert the tooth block two 331 between two adjacent tooth block one 21, and smoothly complete the re-setting of the height position of the lifting seat 30, and slow down the shaking of the lifting seat 30 caused by the plug-in action, so as to play a role in maintaining and inhibiting the excessive deflection of the precast pile in the operation process.

[0053] When the tooth block two 331 is inserted and matched with the tooth block one 21, the counter-thrust force receiving surface one 212 on the tooth block one 21 can be in contact with the counter-thrust force receiving surface two 3312 on the tooth block two 331, so that the jack (body) in the jack unit can exert a downward pushing force on the precast pile to implement the operation.

[0054] As shown in Figure 1 , Figure 2 , a plurality of edge plates 132 vertically and alternately distributed and extending in the lateral / radial direction are arranged on the two vertical wall surfaces opposite to the mold groove 131, and the edge plates 132 extend from the outer port side to the middle position of the mold groove 131; correspondingly, a plurality of groove structures capable of being inserted and matched with the edge plates 132 are arranged on the two vertical wall surfaces of the support arm 20, and the inner end of the groove structure (close to one end of the free end side of the tooth block one 21) is a closed end. The inner end side of the edge plate 132 is inserted into the groove structure. In this way, by matching the edge plate 132 with the groove structure, the support arm 20 is fixed with the translation slide 13 in the vertical direction, which can improve / increase the carrying capacity and the ability to maintain the vertical position of the support arm 20; at the same time, the support arm 20 can have a limited stroke amount of relative movement in the lateral direction or in the radial direction relative to the translation slide 13, which is generally controlled within 5mm, preferably within 3mm.

[0055] At the same time, a stud 133 extending transversely / radially into the mold groove 131 is arranged on the translation slide 13 at the upper end and the lower end of the mold groove 131; correspondingly, a plurality of multi-stage through holes one 22 extending transversely / radially are arranged at the upper end and the lower end of the support arm 20. The stud 133 can extend into the multi-stage through hole one 22, and a spring 134 is sleeved on a section of the stud 133 located in the multi-stage through hole one 22, and a nut member 135 is matched. The two ends of the spring 134 can be in contact with the inner bottom surface of the multi-stage through hole one 22 (at the middle position) and the end surface of the nut member 135, respectively. By rotating the nut member 135, the initial compression state of the spring 134 can be adjusted, thereby regulating the position of the support arm 20 relative to the mold groove 131 (in the groove depth direction).

[0056] The above structural features make the insertion and matching process between the tooth block part 33 and the support arm 20 form a flexible contact state, which can reduce the insertion impact strength, and is conducive to ensuring the stability and reliability of the lifting seat 30 relative to the sleeve 11 in the vertical direction, inhibiting the shaking strength of the lifting seat 30, and helping to inhibit the excessive deflection of the precast pile.

[0057] As shown in Figure 1 ,Figure 4 As shown, the I-shaped cross arm 32 or the number of cross arms is preferably four, and is distributed in a cross state. Such a design helps to offset the forces when the lifting seat 30 is connected to the support arm 20, and inhibits the occurrence of excessive lateral displacement of the lifting seat 30. It helps to keep the lifting seat 30 in a stable and reliable vertical position relative to the sleeve 11 during continuous lifting movement, and plays a role in inhibiting excessive deflection of the precast pile.

[0058] Figure 6 The view shown is the state of the lifting seat 30 not assembled. After assembly, the position of the lifting seat 30 relative to the sleeve 11 needs to be adjusted so that the axis of the multi-stage hole 31 (or the axis of the jack body in the jack unit) is coaxial with the axis of the sleeve 11, and the lifting seat 30 is above the sleeve 11.

[0059] The control unit is connected to each of the telescopic cylinders 122 and each of the traction machine units 40, and can control the extension and retraction state of the telescopic cylinders 122 and the winding and unwinding state of the cable 41, respectively.

[0060] The above embodiments only illustrate the principles and effects of the present application, and are not intended to limit the present application. The present application can be improved in many aspects without departing from the general idea, and those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea of the present application are still covered by the claims of the present application.

Claims

1. A static pressure pile construction device, comprising a pile driving frame (10) with a vertically extending axial hole and a jack unit; characterized in that: It also includes multiple support arms (20), lifting seats (30), and multiple traction machine units (40); On the pile driving frame (10), a sleeve (11) coaxial with and through the central hole is fixedly provided, as well as multiple pairs of vertical arms (12) corresponding to and matched with the support arm (20); multiple vertically alternating spherical ribs (111) are formed on the inner wall of the sleeve (11), so that the apex of the spherical ribs (111) can be distributed on the same cylindrical surface coaxial with the sleeve (11); a vertically arranged translation slide (13) is provided between each pair of vertical arms (12), and the translation slide (13) can move radially back and forth relative to the vertical arm (12); a groove (131) is provided on the translation slide (13). The support arm (20) is a strip-shaped plate that is vertically set in the groove (131) and can move simultaneously with the translation slide (13); multiple tooth blocks (21) are vertically and alternately distributed on the inner end face of the support arm (20). On the lifting seat (30), there is a multi-stage hole (31) for arranging the jack unit and correspondingly located above the sleeve (11), and a plurality of horizontal arms that can be matched with the support arm (20); the free ends of the horizontal arms are each formed with a toothed block portion (33) that can be selectively inserted and matched with a plurality of toothed blocks (21). The traction machine unit (40) is fixed on the upper part of the pair of vertical arms (12) and is correspondingly located above each horizontal arm, so that the free end of its cable (41) extends vertically downward and is fixedly connected to a guide rod (43); the horizontal arm is provided with a smooth through hole (34) for the guide rod (43) to pass through downward, and a buffer spring (44) is sleeved on the section of the guide rod (43) that passes through to the bottom of the horizontal arm; the upper end of the buffer spring (44) contacts the horizontal arm, and the lower end contacts the radial flange (431) provided on the guide rod (43); On the two vertical walls opposite the groove (131), there are multiple vertically arranged and horizontally extended edge plates (132), and the edge plates (132) extend from the outer port of the groove (131) to the middle position; on the two vertical walls of the support arm (20), there are multiple channel structures that can be inserted and matched with the edge plates (132), and at least some of the channel structures have their inner ends closed; the inner end of the edge plate (132) is inserted into the channel structure; A stud (133) extending laterally into the groove (131) is provided on the translation slide (13) at the upper and lower ends of the groove (131); a multi-stage through hole (22) extending laterally is provided at the upper and lower ends of the support arm (20); the stud (133) can extend into the multi-stage through hole (22), and a spring (134) is sleeved on a section of the stud (133) located in the multi-stage through hole (22), and a nut (135) is matched thereon; the two ends of the spring (134) can contact the inner bottom surface of the multi-stage through hole (22) and the end face of the nut (135) respectively.

2. The static pressure pile construction device according to claim 1, characterized in that: The upper part of each pair of upright arms (12) is provided with an L-shaped support plate (121); the lower end of the upright plate (1211) of the L-shaped support plate (121) is connected to the upper part of the pair of upright arms (12), and the free end of the horizontal plate (1212) extends to the top of the sleeve (11); The traction machine unit (40) is fixed on the horizontal plate (1212), and the free end of its cable (41) passes over the pulley block (42) fixed on the horizontal plate (1212) and passes through the hole (1213) on the horizontal plate (1212) before extending vertically downward and connecting with the guide rod (43).

3. The static pressure pile construction device according to claim 2, characterized in that: The lower part of the translation slide (13) matches the convex rail structure on the upper end face of the pile driver (10), and the upper part matches the convex rail structure on the horizontal plate (1212). A pair of telescopic cylinders (122) are installed on the upper part of the pile driving frame (10), and the free ends of the cylinder rods of the pair of telescopic cylinders (122) are fixedly connected to the lower part of the translation slide (13); and a pair of telescopic cylinders (122) are installed on the upper part of the upright plate (1211), and the free ends of the cylinder rods of the pair of telescopic cylinders (122) are fixedly connected to the upper part of the translation slide (13); and under the synchronous drive of the two pairs of telescopic cylinders (122), the translation slide (13) is driven to move relative to the upright arm (12).

4. The static pressure pile construction device according to claim 3, characterized in that: Multiple pairs of telescopic cylinders (122) configured on the upper and lower ends of each translation slide (13) can perform telescopic movements synchronously, and can selectively switch each tooth block (33) and multiple tooth blocks (21) simultaneously between the state of being inserted and matched and the state of being disengaged.

5. The static pressure pile construction device according to claim 1, characterized in that: Multiple tooth blocks (331) are formed on the tooth block part (33) in a vertically alternating manner; each tooth block (331) can be inserted between at least two adjacent tooth blocks (21).

6. The static pressure pile construction device according to claim 5, characterized in that: A convex arc surface 1 (211) is formed on the upper edge of the free end of the tooth block 1 (21), and a convex arc surface 2 (3311) is formed on the lower edge of the free end of the tooth block 2 (331). When the tooth block 1 (21) moves toward the tooth block 2 (331), the arc surface 2 (3311) can contact the arc surface 1 (211) and guide the tooth block 2 (331) to be inserted between two adjacent tooth blocks 1 (21).

7. The static pressure pile construction device according to claim 1, characterized in that: The vertical extension height of the upright arm (12) is less than the vertical extension height of the translation slide (13), and is greater than 1 / 2 of the vertical extension height of the translation slide (13).

8. The static pressure pile construction device according to claim 1, characterized in that: There are four horizontal arms, which are arranged in a cross shape; there are four support arms (20), which are arranged opposite to each horizontal arm on the free end side.

9. A static pressure pile construction device according to claim 1, characterized in that: Multiple convex rails are provided on the inner wall of the vertical arm (12), all extending laterally and arranged vertically alternately; multiple convex rails are provided on the main body of the translation slide (13); the convex rails can be placed between two adjacent convex rails.

Images