CN111042129A - Anti-loosening method and device for hammer core of hydraulic pile driver - Google Patents
Anti-loosening method and device for hammer core of hydraulic pile driver Download PDFInfo
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- CN111042129A CN111042129A CN201911350511.5A CN201911350511A CN111042129A CN 111042129 A CN111042129 A CN 111042129A CN 201911350511 A CN201911350511 A CN 201911350511A CN 111042129 A CN111042129 A CN 111042129A
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- 230000003139 buffering effect Effects 0.000 claims description 67
- 239000007853 buffer solution Substances 0.000 claims description 33
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
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Abstract
The invention relates to the technical field of heavy pile foundation equipment, and discloses an anti-loose method and an anti-loose device for a hammer core of a hydraulic pile driver, wherein the method comprises the steps of firstly installing a buffer connecting rod mechanism of the hydraulic hammer core in a cavity; and then, the first anti-rotation pin penetrates through the first pin hole, the second anti-rotation pin is inserted into the second pin hole, the rotary locking cover is pressed and pressed above the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin, and then the rotary locking cover is pressed and rotated downwards and forcefully until the anti-rotation pin hole is aligned with the first pin hole, so that the first anti-rotation pin returns to the elastic pin to be inserted into the anti-rotation pin hole. According to the method, the anti-rotation pin is internally arranged in the hammer core of the hydraulic pile driver, so that the anti-rotation pin of the hammer core of the hydraulic pile driver can be effectively prevented from loosening; the rotary locking cover of the device is pressed above the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin, so that the first anti-rotation pin and the second anti-rotation pin are arranged in a built-in mode, the anti-rotation pin is prevented from loosening, and the use safety of the heavy pile driver in land and offshore pile foundation engineering construction is improved.
Description
Technical Field
The invention relates to the technical field of heavy pile foundation equipment, in particular to a method and a device for preventing a hammer core of a hydraulic pile driver from loosening.
Background
At present, at the construction pile foundation construction in-process, including land pile foundation engineering construction and marine pile foundation engineering construction, often need use hydraulic pile hammer to carry out pile foundation pile sinking construction, the hammer core body of hydraulic pile hammer is connected with hoist mechanism through the connecting rod that has the buffering protection usually, because hydraulic pile hammer head belongs to high load dynamic vibration structure, in order to prevent that relative rotation from appearing with the connecting rod that has the buffering protection in the hammer core body, set up the anti-rotation round pin between the two usually, in order to prevent that relative rotation from appearing in both.
With the development of economic society, large-scale construction projects such as cross-sea bridges, offshore wind power, land grand bridges, super high-rise buildings and the like are more and more, and the requirements of heavy construction equipment required by the large-scale construction projects are more and more prominent. However, since the heavy construction equipment in China starts late, problems exist in many aspects, a large number of core technologies are monopolized by foreign enterprises, and the method comprises a method and a structure for preventing the hydraulic pile hammer head of the heavy pile foundation construction equipment from loosening.
Prior art, this company discloses a hydraulic pile driver hammer core buffer [ application number: CN201820390873.1], as shown in fig. 1, the body of the locking cover fixing seat 1 is provided with a locking block 3 for fixing the rotary locking gland 2, and the locking block 3 is provided with an anti-rotation hole and a bolt hole; the locking cover fixing seat 1 and the clamping wing 4 of the rotary locking top cover 2 are also provided with anti-rotation holes and bolt holes which are arranged in a straight line with the anti-rotation holes and bolt holes of the locking block; an anti-rotation pin 5 and a bolt 6 sequentially pass through anti-rotation holes and bolt holes of the locking block 3, the locking cover fixing seat 1 and the rotary locking top cover 2, and the rotary locking top cover 2 and the locking cover fixing seat 1 are axially fixed; according to the device, the anti-rotation pin 5 and the bolt 6 are inserted into the anti-rotation hole and the bolt hole from the outside, and the anti-rotation pin 5 and the bolt 6 exposed outside easily cause loosening due to the fact that the hydraulic pile hammer head belongs to a dynamic vibration structure. In particular, the structural design is limited in the alternating loads to which it is subjected and is not suitable for the anti-loosening of the hammer core of a heavy pile driver.
Therefore, it is necessary to develop a new method and device for preventing the hammer core of the hydraulic pile driver from loosening under the action of the alternating load of the large and long-term operation by applying the heavy pile driver, so that the indexes of the heavy pile foundation equipment, such as stability and safety, can reach the international advanced technical level.
Disclosure of Invention
The invention aims to solve the problems and provides a method and a device for preventing the loosening of the hammer core of the hydraulic pile driver for heavy pile foundation construction equipment, wherein the anti-loosening pins are internally arranged in the hammer core of the hydraulic pile driver through unique structure and process design, so that the loosening of the anti-loosening pins of the hammer core of the hydraulic pile driver can be effectively prevented; the device's rotatory locking lid is fixed through first anti-rotation pin between the hammer core top cap, and is fixed through second anti-rotation pin between hammer core body and the hammer core top cap to avoid the relative rotation between the three, rotatory locking lid gland makes first anti-rotation pin, second anti-rotation pin built-in hammer core top cap, first anti-rotation pin, the top of second anti-rotation pin, avoids anti-rotation pin pine to take off, and makes it can be applied to heavy pile foundation equipment.
The technical scheme is as follows:
a method for preventing a hammer core of a hydraulic pile driver from loosening comprises the following steps:
(1) installing a hammer core buffer connecting rod mechanism of the anti-loosening device of the hammer core of the hydraulic pile driver in the cavity of the hammer core body; the anti-loosening device of the hammer core of the hydraulic pile driver comprises a hammer core body, a hammer core buffering connecting rod mechanism, a first anti-rotation pin, a second anti-rotation pin, a hammer core top cover, a rotary locking cover and two locking clamping seats, wherein the hammer core body is provided with a cavity, the hammer core buffering connecting rod mechanism comprises a buffering base and a connecting rod, a first notch is arranged at the edge of an upper end cavity opening of the cavity, a first pin hole and a second notch are respectively arranged on the surface and the side surface of the cover plate of the hammer core top cover, the rotary locking cover is provided with an anti-rotation pin hole, the two locking clamping seats are respectively arranged at the edges of two sides of the cavity opening at the upper end of the cavity, and a locking clamping groove is respectively formed between the two locking clamping seats and;
(2) the first anti-rotation pin penetrates through the first pin hole of the hammer core top cover from bottom to top, and is sleeved with the hammer core top cover through the connecting rod and mounted on the upper end face of the buffer base, and the second notch is aligned with the first notch to form a second pin hole;
(3) the second anti-rotation pin is pinned into the second pin hole; the second anti-rotation pin is respectively in limit clamping connection with the first notch and the second notch;
(4) pressing the rotary locking cover above the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin, wherein the first anti-rotation pin sinks, the hammer core buffering connecting rod mechanism at the lower end of the first anti-rotation pin is compressed, and then the rotary locking cover is pressed downwards with force and rotates until an anti-rotation pin hole in the rotary locking cover is aligned with the first pin hole, so that the first anti-rotation pin is elastically pinned into the anti-rotation pin holes, and two ends of the rotary locking cover are clamped into locking clamping grooves of two locking clamping seats;
(5) and removing the pressing force applied to the rotary locking cover to complete the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver.
The rotary locking cap comprises an annular outer sleeve and two clamping wing plates, the two clamping wing plates are respectively connected with two sides of the lower end of the annular outer sleeve, the bottom end face of the annular outer sleeve is communicated with the top end face of the outer sleeve through the anti-rotation pin holes, and the step (4) further comprises the following steps:
will the bottom end face gland of annular outer sleeve is in the top of hammer core top cap, first anti-rotating round pin, second anti-rotating round pin, first anti-rotating round pin sinks, the hammer core buffering link mechanism compression of first anti-rotating round pin lower extreme, then annular outer sleeve is pressed down hard and is rotatory, and makes anti-rotating pinhole on the annular outer sleeve with first pinhole aligns, first anti-rotating round pin rebound round pin advances in the anti-rotating round pin is downthehole, and with two the card pterygoid lamina card advances two in the locking draw-in groove.
The first anti-rotation pin, the second anti-rotation pin, the first pin hole, the second pin hole and the anti-rotation pin holes are respectively multiple, the first pin hole and the second pin hole are alternately and uniformly distributed on the hammer core top cover, and the step (4) further comprises the following steps:
the rotary locking cover is pressed above the hammer core top cover and the first anti-rotation pins and the second anti-rotation pins, the first anti-rotation pins sink, the hammer core buffering connecting rod mechanism at the lower ends of the first anti-rotation pins is compressed, then the rotary locking cover is pressed downwards forcibly and rotates, the anti-rotation pin holes are aligned with the first pin holes, the first anti-rotation pins rebound to the anti-rotation pin holes, and two ends of the rotary locking cover are clamped into the two locking clamping grooves.
The anti-loosening device of the hammer core of the hydraulic pile driver adopting the anti-loosening method comprises a hammer core body, a hammer core buffering connecting rod mechanism, a first anti-rotation pin, a second anti-rotation pin, a hammer core top cover, a rotary locking cover and two locking clamping seats, wherein the hammer core body is provided with a cavity, the hammer core buffering connecting rod mechanism comprises a buffering base and a connecting rod, the hammer core buffering connecting rod mechanism is installed in the cavity through the buffering base, the two locking clamping seats are respectively arranged on the two side edges of a cavity opening at the upper end of the cavity and respectively form a locking clamping groove with the upper end of the hammer core body, a first notch is arranged on the edge of the cavity opening at the upper end of the cavity, a first pin hole and a second notch are respectively arranged on the cover plate surface and the side surface of the hammer core top cover, the hammer core top cover is installed above the buffering base through the connecting rod, and the second notch is aligned with the first notch to form a second pin hole, the second prevents that the round pin matches the round pin and advances the second pinhole, rotatory locking is covered and is equipped with prevents changeing the pinhole, first prevent that the round pin is from bottom to top in proper order the round pin advances first pinhole, prevent changeing the pinhole, rotatory gland of rotatory locking lid is in the top of hammer core top cap, first prevent changeing round pin, second prevent changeing the round pin, the both ends of rotatory locking lid respectively with two locking draw-in groove block is connected.
The buffer base comprises a first buffer piece, a second buffer piece and a buffer base plate, the lower end of the connecting rod is connected with the top surface of the buffer base plate, and the first buffer piece and the second buffer piece are respectively arranged on the bottom plate surface and the top plate surface of the buffer base plate.
The cross sections of the cavity, the first buffer part and the buffer base plate are circular respectively, the second buffer part is annular, and the annular second buffer part is sleeved on the connecting rod and is installed on the top plate surface of the buffer base plate.
The first buffer piece and the second buffer piece are disc springs or buffer pads.
The hammer core top cap includes annular apron, annular inner skleeve, the lower extreme of annular inner skleeve with the interior circle side of annular apron is connected, second breach, first pinhole are established respectively on the excircle side of annular apron, the face, the hammer core top cap passes through cover barrel casing is crossed in the annular the connecting rod is installed buffer base's top.
Rotatory locking lid includes annular outer sleeve, two card pterygoid lamina respectively with two outsides of annular outer sleeve lower extreme are connected, the bottom face of annular outer sleeve passes through prevent changeing the pinhole with the top face intercommunication of outer sleeve, rotatory locking lid passes through annular outer sleeve is in the outside of annular inner sleeve, the lower terminal surface gland of annular outer sleeve is in the top of annular apron, second stop pin, rotatory locking lid is through rotatory two card pterygoid lamina and two locking slot block is connected, and prevent changeing the pinhole with the vertical alignment of first pinhole.
The anti-rotation pin holes comprise third pin holes and first through holes, the bottom end face of the annular outer sleeve is communicated with the top end face of the outer sleeve sequentially through the third pin holes and the first through holes, and the first anti-rotation pins are sequentially pinned into the first pin holes and the anti-rotation pin holes from bottom to top.
It should be noted that:
the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used to distinguish one name from another.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The following illustrates the advantages or principles of the invention:
1. the invention provides a method for preventing a hammer core of a hydraulic pile driver from loosening, which carries out special structure and process design aiming at larger alternating load of heavy pile foundation equipment, wherein the method comprises the steps of firstly installing a hydraulic hammer core buffer connecting rod mechanism in a cavity of a hammer core body; then a first anti-rotation pin penetrates through a first pin hole of the hammer core top cover from bottom to top and is sleeved on the upper end surface of the buffer base together with the hammer core top cover through a connecting rod, then a second anti-rotation pin is pinned into a second pin hole, so that the second anti-rotation pin is respectively in limit clamping connection with a first gap of the hammer core top cover and a second gap of the hammer core body, the hammer core body and the hammer core top cover are fixed through the second anti-rotation pin, the hammer core body and the hammer core top cover are prevented from rotating relative to each other, then a rotary locking cover is pressed on the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin, so that the two anti-rotation pins are internally provided with the interior of the hammer core of the hydraulic pile driver, the anti-rotation pins can be effectively prevented from loosening, then the rotary locking cover is pressed downwards to rotate until the anti-rotation pin holes are aligned with the first pin hole, and the first anti-rotation pin is returned to be pinned into the anti-rotation pin holes, so that the rotary locking cover and the, the relative rotation between the rotary locking cover and the hammer core top cover is prevented, and the two ends of the rotary locking cover are clamped into the two locking clamping grooves; and finishing the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver. According to the method, the anti-rotation pins are internally arranged in the hammer cores of the hydraulic pile drivers, so that the anti-rotation pins of the hammer cores of the hydraulic pile drivers can be effectively prevented from loosening, the use safety of the hammer cores of the hydraulic pile drivers in onshore pile foundation engineering construction or offshore pile foundation engineering construction is improved, the hammer cores of the hydraulic pile drivers can be applied to heavy pile drivers, the hammer cores of the hydraulic pile drivers are prevented from loosening under the action of alternating load of large and long-term operation, the indexes of stability, safety and the like of heavy pile foundation equipment are realized, and the international advanced technical level is reached.
2. The rotary locking cover comprises an annular outer sleeve and two clamping wing plates, and the rotary locking cover is locked and clamped with the two locking clamping grooves of the locking clamping seat through the two clamping wing plates, so that the locking tightness is improved.
3. The first anti-rotation pin, the second anti-rotation pin, the first pin hole, the second pin hole and the anti-rotation pin holes are respectively multiple, so that the relative rotation between the anti-rotation locking cover and the hammer core top cover and between the hammer core body and the hammer core top cover is more stable.
4. The invention provides an anti-loosening device for a hammer core of a hydraulic pile driver, which comprises a hammer core body, a hammer core buffering connecting rod mechanism, a first anti-rotation pin, a second anti-rotation pin, a hammer core top cover, a rotary locking cover and two locking clamping seats, wherein when the anti-loosening device is used, the hydraulic hammer core buffering connecting rod mechanism is firstly installed in a cavity of the hammer core body; then a first anti-rotation pin penetrates through a first pin hole of the hammer core top cover from bottom to top and is installed on the upper end surface of the buffer base together with the hammer core top cover through a connecting rod in a sleeved mode, then a second anti-rotation pin is inserted into a second pin hole, so that the second anti-rotation pin is in limit clamping connection with a first notch of the hammer core top cover and a second notch of the hammer core body respectively, the locking between the hammer core body and the hammer core top cover is achieved, the hammer core body and the hammer core top cover are prevented from rotating relatively, then a rotary locking cover is pressed on the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin in a pressing mode, the two anti-rotation pins are installed inside the hammer core of the hydraulic pile driver in a built-in mode, the anti-rotation pins can be effectively prevented from loosening, then the rotary locking cover is pressed downwards to rotate forcibly until the anti-rotation pin holes are aligned with the first pin hole, the first anti-rotation pin is rebounded into the pin holes, and therefore the locking, the relative rotation between the rotary locking cover and the hammer core top cover is prevented, and the two ends of the rotary locking cover are clamped into the two locking clamping grooves; and finishing the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver. The device is characterized in that a rotary locking cover and a hammer core top cover are fixed through a first anti-rotation pin, and a hammer core body and the hammer core top cover are fixed through a second anti-rotation pin, so that relative rotation among the three is avoided.
5. The buffer base comprises a first buffer part, a second buffer part and a buffer base plate, wherein the first buffer part and the second buffer part are respectively arranged on the bottom plate surface and the top plate surface of the buffer base plate, so that two buffer areas are formed above and below the buffer base, the hard impact force generated by the upward movement and the downward movement of a hammer core of a hydraulic pile driver is avoided, preferably, the connecting rod is integrally connected with the buffer base plate, and the connection stability of the connecting rod and the buffer base plate is improved.
6. Preferably, the cross sections of the cavity, the first buffer part and the buffer seat plate are respectively circular, and the second buffer part is annular, so that the buffer base is convenient to mount and connect.
7. Preferably, the first buffer member and the second buffer member of the present invention are disc springs or cushion pads, which improve the buffering performance of the first buffer member and the second buffer member.
8. The top cover of the hammer core comprises the annular cover plate and the annular inner sleeve, and the top cover of the hammer core is sleeved with the connecting rod through the annular inner sleeve, so that the up-and-down buffering movement of the connecting rod is smoother.
9. The rotary locking cover comprises an annular outer sleeve and two clamping wing plates, and the rotary locking cover is locked and clamped with the two locking clamping grooves of the locking clamping seat through the two clamping wing plates, so that the locking tightness is improved.
10. The anti-rotation pin hole comprises a third pin hole and a first through hole, wherein the first through hole is arranged above the third pin hole, so that a ventilation air passage is provided when the first anti-rotation pin is inserted into the third pin hole, and the first anti-rotation pin is convenient to install.
11. The first anti-rotation pin, the second anti-rotation pin, the first pin hole, the second pin hole and the anti-rotation pin holes are respectively multiple, so that the relative rotation between the anti-rotation locking cover and the hammer core top cover and between the hammer core body and the hammer core top cover is more stable.
12. The first anti-rotation pin comprises a pin cap and a pin rod, wherein the size of the pin cap is larger than that of the pin rod, so that the first anti-rotation pin is more stably installed.
13. The first gap and the second gap are respectively in a semi-cylindrical shape, and the second pin hole is in a cylindrical shape, so that the second anti-rotation pin is convenient to mount.
Drawings
Fig. 1 is a schematic perspective view of a hammer core buffering device of a hydraulic pile driver in the prior art.
Fig. 2 is a schematic perspective view of the anti-loosening device of the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Fig. 3 is a first cross-sectional view and a first top view of the anti-loosening device of the hammer core of the hydraulic pile driver.
Fig. 4 is a second sectional view and a second top view of the anti-loosening device for the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Fig. 5 is a third sectional view and a third top view of the anti-loosening device for the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Fig. 6 is a fourth cross-sectional view and a fourth top view of the anti-loosening device of the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Fig. 7 is a fifth sectional view and a fifth top view of the anti-loosening device of the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Fig. 8 is a sixth sectional view and a sixth plan view of the anti-loosening device for the hammer core of the hydraulic pile driver according to the embodiment of the invention.
Description of reference numerals:
1. the locking cover fixing seat comprises a locking cover fixing seat, 2, a rotary locking gland, 3, a locking block, 4, a clamping wing, 5, an anti-rotation pin, 6, a bolt, 10, a hammer core body, 11, a cavity, 111, a first notch, 20, a hammer core buffering connecting rod mechanism, 21, a buffering base, 211, a first buffering member, 212, a second buffering member, 213, a buffering seat plate, 22, a connecting rod, 30, a first anti-rotation pin, 40, a second anti-rotation pin, 50, a hammer core top cover, 51, a first pin hole, 52, a second pin hole, 521, a second notch, 53, an annular cover plate, 54, an annular through hole, 60, a rotary locking cover inner sleeve, 61, an anti-rotation pin hole, 611, a third pin hole, 612, a first through hole, 62, an annular outer sleeve, 63, a clamping wing plate, 70, a locking clamping seat, 71 and a locking clamping groove.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Referring to fig. 1 to 8, the invention provides a method for preventing a hammer core of a hydraulic pile driver from loosening, which comprises the following steps:
(1) referring to fig. 3, firstly, a hammer core buffering link mechanism 20 of the anti-loosening device of the hammer core of the hydraulic pile driver is installed in a cavity 11 of a hammer core body 10; the anti-loosening device of the hammer core of the hydraulic pile driver comprises a hammer core body 10, a hammer core buffering link mechanism 20, a first anti-rotation pin 30, a second anti-rotation pin 40, a hammer core top cover 50, a rotary locking cover 60 and two locking clamping seats 70, wherein the hammer core body 10 is provided with a cavity 11, the hammer core buffering link mechanism 20 comprises a buffering base 21 and a connecting rod 22, a first notch 111 is arranged at the edge of an upper end cavity opening of the cavity 11, a first pin hole 51 and a second notch 521 are respectively arranged on the cover plate surface and the side surface of the hammer core top cover 50, the rotary locking cover 60 is provided with an anti-rotation pin hole 61, the two locking clamping seats 70 are respectively arranged at the edges of two side edges of the upper end cavity opening of the cavity 11, and respectively form a locking clamping groove 71 with the upper end of;
(2) referring to fig. 4, the first anti-rotation pin 30 passes through the first pin hole 51 of the hammer core top cover 50 from bottom to top, and is mounted on the upper end surface of the buffer base 21 through the connecting rod 22 with the hammer core top cover 50 in a sleeved manner, and the second notch 521 is aligned with the first notch 111 to form a second pin hole 52;
(3) referring to fig. 5, the second anti-rotation pin 40 is pinned into the second pin hole 52; the second anti-rotation pin 40 is respectively in limit clamping connection with the first notch 111 and the second notch 521;
(4) referring to fig. 6 and 7, the rotary locking cover 60 is pressed over the hammer core top cover 50, the first anti-rotation pin 30 and the second anti-rotation pin 40, the first anti-rotation pin 30 sinks, the hammer core buffering link mechanism 20 at the lower end of the first anti-rotation pin 30 is compressed, and then the rotary locking cover 60 is pressed downwards with force and rotates until the anti-rotation pin hole 61 on the rotary locking cover 60 is aligned with the first pin hole 51, so that the first anti-rotation pin 30 rebounds to enter the anti-rotation pin hole 61, and the two ends of the rotary locking cover 60 are clamped into the locking clamp grooves 71 of the two locking clamp seats 70;
(5) referring to fig. 8, the pressing force applied to the rotary locking cap 60 is removed to complete the assembly of the anti-loosening device for the hammer core of the hydraulic pile driver.
Firstly, installing a hydraulic hammer core buffering connecting rod mechanism 20 in a cavity 11 of a hammer core body 10; then, the first anti-rotation pin 30 passes through the first pin hole 51 of the hammer core top cover 50 from bottom to top, and is sleeved on the upper end surface of the buffer base 21 together with the hammer core top cover 50 through the connecting rod 22, then the second anti-rotation pin 40 is pinned into the second pin hole 52, so that the second anti-rotation pin 40 is respectively in limit clamping connection with the first notch 111 of the hammer core top cover 50 and the second notch 521 of the hammer core body 10, thereby realizing the locking between the hammer core body 10 and the hammer core top cover 50 through the second anti-rotation pin 40, preventing the relative rotation between the hammer core body 10 and the hammer core top cover 50, then the rotary locking cover 60 is pressed and pressed on the hammer core top cover 50, the first anti-rotation pin 30 and the second anti-rotation pin 40, so that the two anti-rotation pins are internally provided with the inside of the hydraulic pile driver hammer core, thereby effectively preventing the anti-rotation pins from loosening, then the rotary locking cover 60 is pressed and rotated downwards until the anti-rotation pin holes 61 are aligned with the first, the first anti-rotation pin 30 is rebounded to be inserted into the anti-rotation pin hole 61, so that the rotary locking cover 60 and the hammer core top cover 50 are locked through the first anti-rotation pin 30, the relative rotation between the rotary locking cover 60 and the hammer core top cover 50 is prevented, and two ends of the rotary locking cover 60 are clamped into the two locking clamping grooves 71; and finishing the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver. The anti-loosening method has the advantages that the anti-loosening pins are internally arranged in the hammer core of the hydraulic pile driver, so that the anti-loosening pins of the hammer core of the hydraulic pile driver can be effectively prevented from loosening, the use safety of the hammer core of the hydraulic pile driver in onshore pile foundation engineering construction or offshore pile foundation engineering construction is improved, the hammer core of the hydraulic pile driver can be applied to a heavy pile driver, the anti-loosening of the hammer core of the hydraulic pile driver under the action of alternating load of large and long-term operation is prevented, the indexes of stability, safety and the like of heavy pile foundation equipment can be realized, and the international advanced technical level is.
Wherein, the rotary locking cap 60 comprises an annular outer sleeve 62 and two snap wing plates 63, the two snap wing plates 63 are respectively connected with two sides of the lower end of the annular outer sleeve 62, the bottom end surface of the annular outer sleeve 62 is communicated with the top end surface of the outer sleeve through an anti-rotation pin hole 61, and the step (4) further comprises the following steps:
the bottom end face of the annular outer sleeve 62 is pressed on the hammer core top cover 50, the first anti-rotation pin 30 and the second anti-rotation pin 40, the first anti-rotation pin 30 sinks, the hammer core buffering connecting rod mechanism 20 at the lower end of the first anti-rotation pin 30 is compressed, then the annular outer sleeve 62 is pressed downwards with force and rotates, the anti-rotation pin holes 61 in the annular outer sleeve 62 are aligned with the first pin holes 51, the first anti-rotation pin 30 is rebounded to be pinned into the anti-rotation pin holes 61, and the two clamping wing plates 63 are clamped into the two locking clamping grooves 71.
The rotary locking cover 60 is locked and clamped with the two locking clamping grooves 71 of the locking clamping seat 70 through the two clamping wing plates 63, so that the locking tightness is improved.
Preferably, the first anti-rotation pin 30, the second anti-rotation pin 40, the first pin hole 51, the second pin hole 52, and the anti-rotation pin hole 61 are respectively multiple, and the multiple first pin holes 51 and the multiple second pin holes 52 are alternately and uniformly distributed on the hammer core top cover 50, and the step (4) further includes the following steps:
the rotary locking cover 60 is pressed on the hammer core top cover 50 and the first anti-rotation pins 30 and the second anti-rotation pins 40, the first anti-rotation pins 30 sink, the hammer core buffering connecting rod mechanism 20 at the lower ends of the first anti-rotation pins 30 is compressed, then the rotary locking cover 60 is pressed downwards with force and rotates, the anti-rotation pin holes 61 are aligned with the first pin holes 51, the first anti-rotation pins 30 are rebounded to pin into the anti-rotation pin holes 61, and two ends of the rotary locking cover 60 are clamped into the two locking clamping grooves 71.
The relative rotation between the rotation preventing lock cover 60 and the hammer core top cover 50 and between the hammer core body 10 and the hammer core top cover 50 is more stabilized.
Referring to fig. 2 to 8, the anti-loosening device for a hammer core of a hydraulic pile driver using the anti-loosening method according to an embodiment of the present invention includes a hammer core body 10, a hammer core buffering link mechanism 20, a first anti-rotation pin 30, a second anti-rotation pin 40, a hammer core top cover 50, a rotary locking cover 60, and two locking clamping seats 70, wherein the hammer core body 10 has a cavity 11, the hammer core buffering link mechanism 20 includes a buffering base 21 and a connecting rod 22, the hammer core buffering link mechanism 20 is installed in the cavity 11 through the buffering base 21, the two locking clamping seats 70 are respectively disposed on two side edges of an upper opening of the cavity 11, and respectively form a locking clamping groove 71 with an upper end of the hammer core body 10, preferably, the two locking clamping seats 70 are integrally formed with the upper end of the hammer core body 10, a first notch 111 is disposed on an upper opening edge of the cavity 11, and first pin holes 51, a first pin hole, a second pin, a, The second gap 521 is formed by sleeving the hammer core top cover 50 on the connecting rod 22 and installing the hammer core top cover 50 above the buffer base 21, the second gap 521 is aligned with the first gap 111 to form a second pin hole 52, the second anti-rotation pin 40 is matched and pinned into the second pin hole 52, the rotary locking cover 60 is provided with an anti-rotation pin hole 61, the first anti-rotation pin 30 is sequentially pinned into the first pin hole 51 and the anti-rotation pin hole 61 from bottom to top, the rotary locking cover 60 is rotatably pressed on the hammer core top cover 50, the first anti-rotation pin 30 and the second anti-rotation pin 40, and two ends of the rotary locking cover 60 are respectively connected with the two locking clamping grooves 71 in a clamping manner.
When in use, the hydraulic hammer core buffering connecting rod mechanism 20 is firstly installed in the cavity 11 of the hammer core body 10; then, the first anti-rotation pin 30 passes through the first pin hole 51 of the hammer core top cover 50 from bottom to top, and is sleeved on the upper end surface of the buffer base 21 together with the hammer core top cover 50 through the connecting rod 22, then the second anti-rotation pin 40 is pinned into the second pin hole 52, so that the second anti-rotation pin 40 is in limit clamping connection with the first notch 111 of the hammer core top cover 50 and the second notch 521 of the hammer core body 10 respectively, thereby realizing the pin locking between the hammer core body 10 and the hammer core top cover 50, preventing the hammer core body 10 and the hammer core top cover 50 from relative rotation, then the rotary locking cover 60 is pressed on the hammer core top cover 50 and the first anti-rotation pin 30 and the second anti-rotation pin 40, so that the two anti-rotation pins are internally provided with the inner part of the hydraulic hammer core, the anti-rotation pins can be effectively prevented from loosening, then the rotary locking cover 60 is pressed downwards forcefully until the anti-rotation pin holes 61 are aligned with the first pin holes 51, and the first pin 30 rebounds into the anti-rotation pin holes 61, thereby realizing the locking between the rotary locking cover 60 and the hammer core top cover 50, preventing the relative rotation between the rotary locking cover 60 and the hammer core top cover 50, and clamping the two ends of the rotary locking cover 60 into the two locking clamping grooves 71; and finishing the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver. The device's rotatory locking lid 60 is pinned through first anti-rotation pin 30 between the hammer core top cap 50, and is pinned through second anti-rotation pin 40 between hammer core body 10 and the hammer core top cap 50 to avoid the relative rotation between the three, rotatory locking lid 60 gland makes first anti-rotation pin 30, the built-in of second anti-rotation pin 40 in hammer core top cap 50, first anti-rotation pin 30, the top of second anti-rotation pin 40, avoids two anti-rotation pins pine to take off.
Wherein, buffering base 21 includes first bolster 211, second bolster 212, buffering bedplate 213, and the lower extreme of connecting rod 22 is connected with the top surface of buffering bedplate 213, and preferably, connecting rod 22 is connected with buffering bedplate 213 integrated into one piece, and first bolster 211, second bolster 212 are established respectively on the bottom plate face, the roof face of buffering bedplate 213. The first buffer member 211 and the second buffer member 212 are respectively disposed on the bottom plate surface and the top plate surface of the buffer base plate 213, so that two buffer areas are formed above and below the buffer base 21, hard impact force generated when the hammer core of the hydraulic pile driver moves upwards and downwards is avoided, preferably, the connecting rod 22 is integrally connected with the buffer base plate 213, and the connection stability of the connecting rod 22 and the buffer base plate 213 is improved.
Preferably, the cross sections of the cavity 11, the first buffer member 211 and the buffer base plate 213 are circular, the second buffer member 212 is annular, and the annular second buffer member 212 is mounted on the top plate surface of the buffer base plate 213 through the connecting rod 22. The installation and connection of the buffer base 21 are convenient.
Preferably, the first and second buffers 211 and 212 are disc springs or cushion pads. The buffering performance of the first buffering member 211 and the second buffering member 212 is improved.
The hammer core top cover 50 comprises an annular cover plate 53 and an annular inner sleeve 54, the lower end of the annular inner sleeve 54 is connected with the inner circle side of the annular cover plate 53, the second gap 521 and the first pin hole 51 are respectively arranged on the outer circle side and the plate surface of the annular cover plate 53, and the hammer core top cover 50 is arranged above the buffer base 21 through the annular inner sleeve 54 which is sleeved with the connecting rod 22. The hammer core top cover 50 is sleeved over the connecting rod 22 through the annular inner sleeve 54, so that the up-and-down buffering movement of the connecting rod 22 is smoother.
The rotary locking cap 60 comprises an annular outer sleeve 62 and two clamping wing plates 63, the two clamping wing plates 63 are respectively connected with two outer sides of the lower end of the annular outer sleeve 62, the bottom end face of the annular outer sleeve 62 is communicated with the top end face of the outer sleeve through an anti-rotation pin hole 61, the rotary locking cap 60 is sleeved on the outer side of the annular inner sleeve 54 through the annular outer sleeve 62, the lower end face of the annular outer sleeve 62 is pressed and covered above the annular cover plate 53 and the second anti-rotation pin 40, the rotary locking cap 60 is connected with the two locking clamping grooves 71 in a clamping mode through rotating the two clamping wing plates 63, and the anti-rotation pin hole 61 is vertically aligned with the first pin. The rotary locking cover 60 is locked and clamped with the two locking clamping grooves 71 of the locking clamping seat 70 through the two clamping wing plates 63, so that the locking tightness is improved.
The anti-rotation pin hole 61 comprises a third pin hole 611 and a first through hole 612, the bottom end surface of the annular outer sleeve 62 is communicated with the top end surface of the outer sleeve sequentially through the third pin hole 611 and the first through hole 612, and the first anti-rotation pin 30 is sequentially pinned into the first pin hole 51 and the anti-rotation pin hole 61 from bottom to top. The first through hole 612 is disposed above the third pin hole 611, so as to provide a ventilation air passage for the first anti-rotation pin 30 to be pinned into the third pin hole 611, thereby facilitating the installation of the first anti-rotation pin 30.
The first anti-rotation pin 30 comprises a pin cap and a pin rod, the lower end of the pin rod is connected with the upper end face of the pin cap, the size of the pin cap is larger than that of the pin rod, a sunken pit is formed in the lower end of the first pin hole 51 and matched with the pin cap, and the first anti-rotation pin 30 is sequentially pinned into the first pin hole 51 and the anti-rotation pin hole 61 from bottom to top through the pin rod. The first anti-rotation pin 30 is more stably installed.
The first notch 111 and the second notch 521 are respectively semi-cylindrical, the second pin hole 52 formed by aligning the first notch 111 and the second notch 521 is cylindrical, and the second anti-rotation pin 40 is cylindrical. The installation of the second anti-rotation pin 40 is facilitated.
The invention can be applied to the heavy pile driver by unique structural design and process steps, prevents the hammer core of the hydraulic pile driver from loosening under the action of alternating load of large and long-term operation, and can ensure the indexes of stability, safety and the like of heavy pile foundation equipment to reach the international advanced technical level.
The technology of the invention can ensure that the heavy construction equipment under the field and severe operation conditions can maintain safe and stable long-term and continuous construction, greatly reduce the equipment failure rate generated in long-term and continuous construction, and ensure the engineering quality and progress.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (10)
1. The method for preventing the hammer core of the hydraulic pile driver from loosening is characterized by comprising the following steps of:
(1) installing a hammer core buffer connecting rod mechanism of the anti-loosening device of the hammer core of the hydraulic pile driver in the cavity of the hammer core body; the anti-loosening device of the hammer core of the hydraulic pile driver comprises a hammer core body, a hammer core buffering connecting rod mechanism, a first anti-rotation pin, a second anti-rotation pin, a hammer core top cover, a rotary locking cover and two locking clamping seats, wherein the hammer core body is provided with a cavity, the hammer core buffering connecting rod mechanism comprises a buffering base and a connecting rod, a first notch is arranged at the edge of an upper end cavity opening of the cavity, a first pin hole and a second notch are respectively arranged on the surface and the side surface of the cover plate of the hammer core top cover, the rotary locking cover is provided with an anti-rotation pin hole, the two locking clamping seats are respectively arranged at the edges of two sides of the cavity opening at the upper end of the cavity, and a locking clamping groove is respectively formed between the two locking clamping seats and;
(2) the first anti-rotation pin penetrates through the first pin hole of the hammer core top cover from bottom to top, and is sleeved with the hammer core top cover through the connecting rod and mounted on the upper end face of the buffer base, and the second notch is aligned with the first notch to form a second pin hole;
(3) the second anti-rotation pin is pinned into the second pin hole; the second anti-rotation pin is respectively in limit clamping connection with the first notch and the second notch;
(4) pressing the rotary locking cover above the hammer core top cover, the first anti-rotation pin and the second anti-rotation pin, wherein the first anti-rotation pin sinks, the hammer core buffering connecting rod mechanism at the lower end of the first anti-rotation pin is compressed, and then the rotary locking cover is pressed downwards with force and rotates until an anti-rotation pin hole in the rotary locking cover is aligned with the first pin hole, so that the first anti-rotation pin is elastically pinned into the anti-rotation pin holes, and two ends of the rotary locking cover are clamped into locking clamping grooves of two locking clamping seats;
(5) and removing the pressing force applied to the rotary locking cover to complete the assembly of the anti-loosening device of the hammer core of the hydraulic pile driver.
2. The method for preventing loosening of a hammer core of a hydraulic pile driver as recited in claim 1, wherein the rotation locking cap includes an annular outer sleeve, and two snap-wing plates respectively connected to both sides of a lower end of the annular outer sleeve, a bottom end surface of the annular outer sleeve communicating with a top end surface of the outer sleeve through the rotation preventing pin hole, and the step (4) further includes the steps of:
will the bottom end face gland of annular outer sleeve is in the top of hammer core top cap, first anti-rotating round pin, second anti-rotating round pin, first anti-rotating round pin sinks, the hammer core buffering link mechanism compression of first anti-rotating round pin lower extreme, then annular outer sleeve is pressed down hard and is rotatory, and makes anti-rotating pinhole on the annular outer sleeve with first pinhole aligns, first anti-rotating round pin rebound round pin advances in the anti-rotating round pin is downthehole, and with two the card pterygoid lamina card advances two in the locking draw-in groove.
3. The method for preventing the hammer core of the hydraulic pile driver from loosening as claimed in any one of claims 1 to 2, wherein the first anti-rotation pin, the second anti-rotation pin, the first pin hole, the second pin hole and the anti-rotation pin hole are respectively multiple, and the multiple first pin holes and the multiple second pin holes are alternately and uniformly distributed on the top cover of the hammer core, and the step (4) further comprises the following steps:
the rotary locking cover is pressed above the hammer core top cover and the first anti-rotation pins and the second anti-rotation pins, the first anti-rotation pins sink, the hammer core buffering connecting rod mechanism at the lower ends of the first anti-rotation pins is compressed, then the rotary locking cover is pressed downwards forcibly and rotates, the anti-rotation pin holes are aligned with the first pin holes, the first anti-rotation pins rebound to the anti-rotation pin holes, and two ends of the rotary locking cover are clamped into the two locking clamping grooves.
4. The anti-loosening device for the hammer core of the hydraulic pile driver adopting the anti-loosening method of any one of claims 1 to 3, which comprises a hammer core body, a hammer core buffering link mechanism, a first anti-loosening pin, a second anti-loosening pin, a hammer core top cover, a rotary locking cover and two locking clamping seats, wherein the hammer core body is provided with a cavity, the hammer core buffering link mechanism comprises a buffering base and a connecting rod, the hammer core buffering link mechanism is installed in the cavity through the buffering base, the two locking clamping seats are respectively arranged on two side edges of a cavity opening at the upper end of the cavity and respectively form a locking clamping groove with the upper end of the hammer core body, a first notch is arranged on the edge of the cavity opening at the upper end of the cavity, a first pin hole and a second notch are respectively arranged on the cover plate surface and the side surface of the hammer core top cover, the hammer core top cover is sleeved on the connecting rod and is installed above the buffering base, and the second breach with first breach is aligned and is formed the second pinhole, the second prevents that the round pin matches the round pin and advances the second pinhole, rotatory locking is covered and is equipped with prevents changeing the pinhole, first rotation-preventing round pin is sold into from bottom to top in proper order first pinhole, prevent changeing the pinhole, rotatory gland of rotatory locking lid is in the top of hammer core top cap, first rotation-preventing round pin, second rotation-preventing round pin, the both ends of rotatory locking lid respectively with two the locking draw-in groove block is connected.
5. The anti-loosening device for the hammer core of the hydraulic pile driver as claimed in claim 4, wherein the buffering base comprises a first buffering member, a second buffering member and a buffering seat plate, the lower end of the connecting rod is connected with the top surface of the buffering seat plate, and the first buffering member and the second buffering member are respectively arranged on the bottom plate surface and the top plate surface of the buffering seat plate.
6. The device as claimed in claim 5, wherein the cross-sections of the cavity, the first buffer member and the buffer base plate are circular, the second buffer member is annular, and the second annular buffer member is mounted on the top plate surface of the buffer base plate through the connecting rod.
7. The hydraulic pile driver hammer core anti-loosening apparatus as claimed in claim 5, wherein the first and second dampers are disc springs or cushions.
8. The anti-loosening device for the hammer core of the hydraulic pile driver as claimed in any one of claims 4 to 7, wherein the hammer core top cover comprises an annular cover plate and an annular inner sleeve, the lower end of the annular inner sleeve is connected with the inner circle side of the annular cover plate, the second notch and the first pin hole are respectively formed in the outer circle side and the plate surface of the annular cover plate, and the hammer core top cover is installed above the buffer base through the annular inner sleeve and sleeved with the connecting rod.
9. The device for preventing loosening of a hammer core of a hydraulic pile driver as claimed in claim 8, wherein the rotary locking cap includes an annular outer sleeve and two snap wing plates, the two snap wing plates are respectively connected with two outer sides of the lower end of the annular outer sleeve, the bottom end face of the annular outer sleeve is communicated with the top end face of the outer sleeve through the anti-rotation pin hole, the rotary locking cap is sleeved on the outer side of the annular inner sleeve through the annular outer sleeve, the lower end face of the annular outer sleeve is pressed and covered above the annular cover plate and the second anti-rotation pin, the rotary locking cap is connected with the two locking snap grooves in a snap fit manner by rotating the two snap wing plates, and the anti-rotation pin hole is vertically aligned with the first pin hole.
10. The anti-loosening device for the hammer core of the hydraulic pile driver as claimed in claim 9, wherein the anti-rotation pin holes comprise a third pin hole and a first through hole, the bottom end face of the annular outer sleeve is communicated with the top end face of the outer sleeve through the third pin hole and the first through hole in sequence, and the first anti-rotation pin is sequentially pinned into the first pin hole and the anti-rotation pin hole from bottom to top.
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| CN201911350511.5A CN111042129B (en) | 2019-12-24 | 2019-12-24 | Anti-loosening method and device for hammer core of hydraulic pile driver |
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| CN201911350511.5A CN111042129B (en) | 2019-12-24 | 2019-12-24 | Anti-loosening method and device for hammer core of hydraulic pile driver |
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| CN207862932U (en) * | 2017-10-30 | 2018-09-14 | 中磐建设集团有限公司 | Firm hydraulic pile equipment for building |
| CN211773636U (en) * | 2019-12-24 | 2020-10-27 | 广东力源液压机械有限公司 | Anti-loose device of hammer core of hydraulic pile driver |
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| US3550694A (en) * | 1967-12-12 | 1970-12-29 | Zaklady Remontu Maszyn Budowla | Vibrohammer |
| GB9208422D0 (en) * | 1992-04-16 | 1992-06-03 | Ong Eng S | Foundation piling apparatus |
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| CN111042129B (en) | 2024-04-05 |
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Effective date of registration: 20240306 Address after: 528000 Industrial Zone, Dadu village, Chencun Town, Shunde District, Foshan City, Guangdong Province Applicant after: GUANGDONG LIYUAN HYDRAULIC MACHINERY Co.,Ltd. Country or region after: Zhong Guo Applicant after: Guangdong Sparta Heavy Industry Technology Co.,Ltd. Address before: 528000 Industrial Zone, Dadu village, Chencun Town, Shunde District, Foshan City, Guangdong Province Applicant before: GUANGDONG LIYUAN HYDRAULIC MACHINERY Co.,Ltd. Country or region before: Zhong Guo |
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