CN211343662U

CN211343662U - Anti-loosening device for pile hammer head

Info

Publication number: CN211343662U
Application number: CN201922369533.8U
Authority: CN
Inventors: 魏智健; 庞国达
Original assignee: Guangdong Liyuan Hydraulic Machinery Co ltd
Current assignee: Guangdong Liyuan Hydraulic Machinery Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-25
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a heavy pile foundation engineering equipment manufacturing technology discloses a pile hammer head anti-loosening device, including assembly body, round pin axle, nut, hexagon socket head cap screw, end flange, the assembly body has the shaft hole, and the round pin axle includes the round pin bolt, is equipped with first screw on the lower terminal surface of round pin bolt, and the first internal thread in the first screw is opposite with the screw thread direction of the first external screw thread of round pin bolt, and the round pin bolt is respectively through first external screw thread, first internal thread and nut, end flange threaded connection; the end flange comprises an end cover, a second screw hole and a counter bore are respectively formed in the lower end face of the nut and the upper end face of the end cover, the second screw hole corresponds to the position of the counter bore, and the inner hexagonal round head screw is connected with the counter bore in a limiting and clamping mode. The utility model discloses an unique structure and process design can effectually prevent that the nut from selling the epaxial pine and taking off, can extensively be applicable to heavy pile driver's manufacturing, can show indexes such as stability, the security that promote heavy pile foundation equipment, make it can reach international advanced technology level.

Description

Anti-loosening device for pile hammer head

Technical Field

The utility model relates to a heavy pile foundation engineering equipment makes technical field, especially relates to a locking release of pile hammer head.

Background

At present, in the construction process of a building pile foundation, a pile hammer is often required to be used for pile foundation pile sinking construction, the commonly used pile hammer comprises a hydraulic hammer, a hydraulic vibration hammer, a diesel hammer and the like, and the pile hammer belongs to a high-load dynamic vibration structure, so that the fastening of an assembly structure is particularly important, and once the fastener of the assembly structure is loosened, a large safety accident and great economic loss are caused. Especially heavy engineering equipment and large-scale ocean engineering equipment, because of the reasons such as construction environment is abominable, continuous operation time is long, higher requirements are put forward to the stability and the security of pile hammer head, and prior art is difficult to satisfy.

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.

In the prior art, chinese patent literature discloses an interlocking anti-loose bolt [ application number: 201220063479.X ], which consists of a screw, an inner nut and an outer nut. The screw thread of the screw rod is a forward and reverse screw thread, the internal thread of the internal nut is a forward screw thread, and the internal thread of the external nut is a reverse screw thread. The opposite top surfaces of the inner nut and the outer nut are provided with 2-12 anti-skidding grooves. The anti-slip groove is of a structure which gradually rises anticlockwise.

The scheme improves the problem that the existing bolt is easy to loosen when being connected with the nut to a certain extent, although the anti-skidding grooves are arranged on the opposite top surfaces of the inner nut and the outer nut, the thread starting points of the inner nut, the outer nut and the bolt are uncertain, and the anti-skidding grooves are difficult to achieve the purpose of being clamped together. Even if the pile hammer can be clamped together accidentally, the pile hammer is applied to a pile hammer with a high-load dynamic vibration structure, the problem that the connection strength is low, when the vibration is large, a gap is easy to appear between the inner nut and the outer nut or the inner nut is easy to push the outer nut to retreat to cause looseness between the inner nut and the connector, and finally the outer nut and the inner nut are separated from the bolt is caused. In particular, the structural design is limited in alternating load and is not suitable for preventing the hammer head of the heavy pile driver from loosening.

Therefore, it is urgently needed to develop a new device for preventing the hammer head of the pile driver from loosening, so that the device can be applied to a heavy pile driver, prevent the hammer head of the hydraulic pile driver from loosening under the action of large and long-term operation alternating load, and enable the indexes of stability, safety and the like of heavy pile foundation equipment to reach the international advanced technical level.

Disclosure of Invention

An object of the utility model is to the above-mentioned problem, a locking take-off of pile driver tup is provided, and the device is through unique structure and process design, through the spacing chucking of hexagon socket head cap screw with end flange and nut to utilize the forward and reverse screw thread of end flange and nut and round pin axle fastening, realize preventing that the nut from selling the epaxial pine and taking off, and can be applicable to the locking take off that is applicable to heavy pile driver tup.

The technical scheme is as follows:

a pile hammer head anti-loosening device comprises an assembly body, a pin shaft, a nut, an inner hexagonal round head screw and an end flange, wherein the assembly body is provided with a shaft hole, the pin shaft comprises a pin bolt, the outer side surface of the pin bolt is provided with a first external thread, a first screw hole is arranged on the lower end surface of the pin bolt, the first screw hole is provided with a first internal thread, the direction of the first internal thread is opposite to that of the first external thread, the pin shaft penetrates through the shaft hole from top to bottom through the pin bolt and is in threaded connection with the nut and the end flange through the first external thread and the first internal thread respectively; the end flange comprises an end cover, a second screw hole and a counter bore are respectively formed in the lower end face of the nut and the upper end face of the end cover, the second screw hole corresponds to the position of the counter bore, the inner hexagonal round-head screw is upwards pre-twisted into the second screw hole, and the inner hexagonal round-head screw downwards extends into the counter bore and is connected with the counter bore in a limiting and clamping mode.

The hinge pin further comprises a hinge pin cover, the upper end face of the hinge pin bolt is connected with the hinge pin cover in an integrated forming mode, the hinge pin is in contact with the upper end face of the assembly body in a close mode through the lower end face of the hinge pin cover, and the upper end face of the nut is in contact with the lower end face of the assembly body in a close mode.

The nut is provided with a second internal thread, and the nut is in threaded connection with the first external thread of the pin bolt through the second internal thread in a matching mode.

The end flange further comprises an end bolt, the lower end face of the end bolt is connected with the upper end face of the end cover in an integrated forming mode, a second external thread is arranged on the outer side face of the end bolt, the end flange is connected with the first internal thread of the first screw hole in a matched threaded mode through the second external thread of the end bolt, and the upper end face of the end cover covers the lower end face of the nut.

The second screw hole is internally provided with a third internal thread, the inner hexagonal round-head screw comprises a screw rod, the screw rod is provided with a third external thread, the third external thread is matched with the third internal thread, and the inner hexagonal round-head screw passes through the screw rod to be pre-twisted into the second screw hole.

The inner hexagonal round-head screw further comprises a nut, the upper end face of the nut is connected with the lower end face of the screw rod in an integrated forming mode, the counter bore comprises a sinking hole and a first through hole, the sinking hole is matched with the nut, the bottom end of the sinking hole is communicated with the lower end face of the end cover through the first through hole, and the inner hexagonal round-head screw passes through the nut downwards extends into the sinking hole and is clamped in the sinking hole in a limiting mode.

The nut and the sinking pit are respectively circular, and the circular nut is respectively matched, limited and clamped with the circular sinking pit.

The inner hexagonal round-head screws, the second screw holes and the counter bores are multiple, the second screw holes are evenly distributed on the lower end face of the nut, the inner hexagonal round-head screws rotate forwards and are twisted into the second screw holes, and the inner hexagonal round-head screws extend downwards into the counter bores and are clamped with the counter bores in a limiting mode.

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 the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The advantages or principles of the invention are explained below:

1. the utility model provides a pile hammer head anti-loosening device, which comprises an assembly body, a pin shaft, a nut, an inner hexagonal round head screw and an end flange, wherein when in use, the pin bolt of the pin shaft firstly passes through the shaft hole of the assembly body to be connected with the nut by screw thread; screwing the nut again to enable the distance between the nut and the pin cover to reach a preset distance, so that the fastening distance between the nut and the pin shaft can be adjusted, then screwing the inner hexagonal round-head screw into a second screw hole on the lower end face of the nut in a forward or reverse mode, then screwing an end flange on the first screw hole tightly, aligning the inner hexagonal round-head screw with a counter bore on the end cover, then extending the inner hexagonal round-head screw into the counter bore in a downward or reverse mode, and enabling the lower end of the inner hexagonal round-head screw to be tightly limited with the counter bore; the nut is limited and clamped with the end flange through the inner hexagonal round head screw, so that relative rotation between the nut and the end flange is avoided; in addition, the first internal thread on the pin shaft and the first external thread have opposite thread directions, so that the thread directions of the end flange and the nut which are in threaded connection corresponding to the first internal thread and the first external thread on the pin shaft are also opposite, the end flange and the nut are in locking connection with the pin shaft in the positive and negative directions, the device limits and clamps the end flange and the nut through the hexagon socket head round-head screw, and the end flange and the nut are fastened with the pin shaft by utilizing the positive and negative threads of the end flange and the nut, so that the nut is prevented from loosening from the pin shaft; but also can realize that the fastening distance of nut and round pin axle is adjustable. The utility model discloses an unique structure and process design make it can use heavy pile driver, prevent that the hydraulic pile driver tup from taking off under great, long-term operation's alternating load effect, can make indexes such as stability, the security of heavy pile foundation equipment, reach international advanced technology level.

2. The utility model discloses a round pin axle is through the lower terminal surface of round pin lid and the up end of the assembly body to near contact, and the up end of nut and the lower terminal surface of the assembly body to near contact is supported to realize the fastening installation of the assembly body.

3. The utility model discloses a nut passes through second internal thread and the first external screw thread phase-match threaded connection of round pin bolt, realizes turning round of nut tight.

4. The utility model discloses an end flange passes through the second external screw thread of end bolt and the first internal thread phase-match threaded connection of first screw, realizes turning round of end flange tightly.

5. The utility model discloses a third internal thread that hexagon socket head cap screw passes through the third external screw thread of screw rod and twists in advance the second screw realizes that the operation, easy to assemble are twisted in advance of hexagon socket head cap screw.

6. The utility model discloses an interior hexagonal round head screw still includes the nut, and the counter bore is including sinking hole, first through-hole, sinks hole and nut phase-match, makes things convenient for the spacing chucking of counter bore and interior hexagonal round head screw lower extreme, the setting of first through-hole, and the person of facilitating the use injects interior hexagonal plate from first through-hole department and carries out the wrench movement operation to interior hexagonal round head screw.

7. The utility model discloses a nut, heavy hole are circular respectively, make things convenient for the nut to stretch into downwards in the heavy hole.

8. The utility model discloses an inner hexagonal round head screw, second screw, counter bore are a plurality of respectively, can more effectually avoid appearing relative rotation between nut and the end flange, improve the fastening stability between them.

Drawings

Fig. 1 is a first cross-sectional view of a locking device of a pile hammer head according to an embodiment of the present invention.

Fig. 2 is a second cross-sectional view of the anti-loosening device for the pile hammer head of the present invention.

Fig. 3 is a third cross-sectional view of the locking device for the pile hammer head of the embodiment of the present invention.

Fig. 4 is a fourth cross-sectional view of the locking device of the pile hammer head of the embodiment of the present invention.

Fig. 5 is a cross-sectional view of the locking device for pile hammer head according to the embodiment of the present invention.

Description of reference numerals:

10. the assembly body, 11, shaft hole, 20, pin shaft, 21, pin bolt, 22, first screw hole, 23, pin cover, 30, nut, 31, second screw hole, 40, inner hexagonal round head screw, 41, screw rod, 42, nut, 50, end flange, 51, end cover, 52, counter bore, 521, counter bore, 522, first through hole, 53 and end bolt.

Detailed Description

The following describes embodiments of the present invention in detail.

As shown in fig. 1 to 5, the utility model provides a locking release of pile hammer head, including assembly body 10, round pin axle 20, nut 30, hexagon socket head cap screw 40, end flange 50, assembly body 10 has shaft hole 11, round pin axle 20 includes round pin bolt 21, the lateral surface of round pin bolt 21 has first external screw thread, be equipped with first screw 22 on the lower terminal surface of round pin bolt 21, first screw 22 has first internal thread, the screw thread direction of first internal thread and first external screw thread is opposite, round pin axle 20 passes through shaft hole 11 from top to bottom through round pin bolt 21, and respectively through first external screw thread, first internal thread and nut 30, end flange 50 threaded connection; the end flange 50 comprises an end cover 51, a second screw hole 31 and a counter bore 52 are respectively formed in the lower end face of the nut 30 and the upper end face of the end cover 51, the second screw hole 31 corresponds to the counter bore 52 in position, the inner hexagonal round head screw 40 is upwards pre-twisted into the second screw hole 31, and the inner hexagonal round head screw 40 downwards extends into the counter bore 52 and is connected with the counter bore 52 in a limiting and clamping mode.

When in use, the pin bolt 21 of the pin shaft 20 firstly passes through the shaft hole 11 of the assembly body 10 and is in threaded connection with the nut 30; screwing the nut 30 tightly to enable the distance between the nut 30 and the pin cover 23 to reach a preset distance, so that the fastening distance between the nut 30 and the pin shaft 20 can be adjusted, screwing the inner hexagonal round-head screw 40 into a second screw hole 31 on the lower end face of the nut 30 in a forward rotation or reverse rotation mode, screwing the end flange 50 tightly on the first screw hole 22, aligning the inner hexagonal round-head screw 40 with a counter bore 52 on the end cover 51, and then extending the inner hexagonal round-head screw 40 into the counter bore 521 downwards in a reverse rotation or forward rotation mode to enable the lower end of the inner hexagonal round-head screw 40 to be limited and tightly clamped with the counter bore 521; the nut 30 is limited and clamped with the end flange 50 through the hexagon socket head round head screw 40, so that relative rotation between the nut 30 and the end flange 50 is avoided; in addition, the first internal thread on the pin shaft 20 and the first external thread have opposite thread directions, so that the thread directions of the end flange 50 and the nut 30 which are in threaded connection with the first internal thread and the first external thread on the pin shaft 20 are also opposite, so that the end flange 50 and the nut 30 are in locking connection with the pin shaft 20 in the positive and negative directions, the device limits and clamps the end flange 50 and the nut 30 through the hexagon socket head round-headed screw 40, and the end flange 50 and the nut 30 are fastened with the pin shaft 20 by using the positive and negative threads of the end flange 50 and the nut 30, so that the nut 30 is prevented from loosening from the pin shaft 20; but also the fastening distance of the nut 30 to the pin shaft 20 can be adjusted.

The pin shaft 20 further includes a pin cover 23, the upper end surface of the pin bolt 21 is integrally connected with the pin cover 23, the pin shaft 20 is in close contact with the upper end surface of the assembly body 10 through the lower end surface of the pin cover 23, and the upper end surface of the nut 30 is in close contact with the lower end surface of the assembly body 10. Thereby achieving a secure mounting of the fitting body 10.

The nut 30 has a second internal thread, by means of which the nut 30 is screwed in a mating manner with the first external thread of the pin bolt 21. Tightening of the nut 30 is achieved.

The end flange 50 further comprises end bolts 53, the lower end faces of the end bolts 53 are integrally connected with the upper end face of the end cover 51, second external threads are arranged on the outer side faces of the end bolts 53, the end flange 50 is in threaded connection with the first internal threads of the first screw hole 22 through the second external threads of the end bolts 53, and the upper end face of the end cover 51 covers the lower end face of the nut 30. Tightening of the end flange 50 is achieved.

Third internal thread has in the second screw 31, and hexagon socket head cap screw 40 includes screw rod 41, and screw rod 41 has the third external screw thread, and third external screw thread and third internal thread phase-match, hexagon socket head cap screw 40 pass through screw rod 41 and twist in advance second screw 31. The pre-twisting operation of the inner hexagonal round head screw 40 is realized, and the installation is convenient.

The inner hexagonal round-head screw 40 further comprises a nut 42, the upper end face of the nut 42 is connected with the lower end face of the screw rod 41 in an integrated forming mode, the counter bore 52 comprises a counter bore 521 and a first through hole 522, the counter bore 521 is matched with the nut 42, the bottom end of the counter bore 521 is communicated with the lower end face of the end cover 51 through the first through hole 522, and the inner hexagonal round-head screw 40 downwards extends into the counter bore 521 through the nut 42 and is limited and clamped with the counter bore 521. The counter sink 521 is matched with the nut 42, so that the limiting clamping of the lower end of the counter sink 52 and the hexagon socket head cap screw 40 is facilitated, the arrangement of the first through hole 522 is convenient for a user to insert the hexagon socket head plate from the first through hole 522 to twist the hexagon socket head cap screw 40.

Preferably, the nut 42 and the sunken hole 521 are circular respectively, and the circular nut 42 is matched with the circular sunken hole 521 for limiting and clamping connection respectively. To facilitate the downward extension of the nut 42 into the well 521.

Preferably, the number of the hexagon socket head cap screws 40, the number of the second screw holes 31 and the number of the counter bores 52 are respectively multiple, the second screw holes 31 are evenly distributed on the lower end surface of the nut 30, the hexagon socket head cap screws 40 rotate forward and are twisted into the second screw holes 31, and the hexagon socket head cap screws 40 extend downwards into the counter bores 521 and are limited and tightly clamped with the counter bores 521. Relative rotation between the nut 30 and the end flange 50 can be effectively avoided, and the fastening stability of the nut 30 and the end flange is improved.

The utility model discloses an unique structure and process design make it can use heavy pile driver, prevent that the hydraulic pile driver tup from taking off under great, long-term operation's alternating load effect pine and taking off, can make indexes such as stability, the security of heavy pile foundation equipment show the improvement, reach international advanced technological level.

The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims

1. The anti-loosening device for the pile hammer head is characterized by comprising an assembly body, a pin shaft, a nut, an inner hexagonal round head screw and an end flange, wherein the assembly body is provided with a shaft hole; the end flange comprises an end cover, a second screw hole and a counter bore are respectively formed in the lower end face of the nut and the upper end face of the end cover, the second screw hole corresponds to the position of the counter bore, the inner hexagonal round-head screw is upwards pre-twisted into the second screw hole, and the inner hexagonal round-head screw downwards extends into the counter bore and is connected with the counter bore in a limiting and clamping mode.

2. The device for preventing the loosening of the pile hammer head as claimed in claim 1, wherein the pin shaft further comprises a pin cover, the upper end surface of the pin bolt is integrally connected with the pin cover, the pin shaft is in close contact with the upper end surface of the assembly body through the lower end surface of the pin cover, and the upper end surface of the nut is in close contact with the lower end surface of the assembly body.

3. The piling hammer head release prevention apparatus of claim 1, wherein the nut has a second internal thread, and the nut is in threaded connection with the first external thread of the pin bolt through the second internal thread.

4. The device for preventing the loosening of the pile hammer head as claimed in claim 1, wherein the end flange further comprises an end bolt, the lower end face of the end bolt is connected with the upper end face of the end cover in an integrated manner, the outer side face of the end bolt is provided with a second external thread, the end flange is in threaded connection with the first internal thread of the first screw hole in a matching manner through the second external thread of the end bolt, and the upper end face of the end cover covers the lower end face of the nut.

5. The device for preventing the loosening of the pile hammer head as claimed in any one of claims 1 to 4, wherein the second screw hole is internally provided with a third internal thread, the hexagon socket head cap screw comprises a screw rod, the screw rod is provided with a third external thread, the third external thread is matched with the third internal thread, and the hexagon socket head cap screw is pre-twisted into the second screw hole through the screw rod.

6. The pile hammer head loosening prevention device according to claim 5, wherein the hexagon socket head cap screw further comprises a nut, the upper end face of the nut is integrally connected with the lower end face of the screw rod, the counter bore comprises a counter bore and a first through hole, the counter bore is matched with the nut, the bottom end of the counter bore is communicated with the lower end face of the end cover through the first through hole, and the hexagon socket head cap screw extends downwards into the counter bore through the nut and is clamped in the counter bore in a limiting mode.

7. The device for preventing the loosening of the pile hammer head as claimed in claim 6, wherein the nut and the sinking pit are circular respectively, and the circular nut is matched with, limited and clamped with the circular sinking pit respectively.

8. The device for preventing the loosening of the piling hammer head as claimed in claim 6, wherein the number of the inner hexagonal round-head screws, the number of the second screw holes and the number of the counter bores are respectively multiple, the second screw holes are evenly distributed on the lower end surface of the nut, the inner hexagonal round-head screws are positively rotated and twisted into the second screw holes, and the inner hexagonal round-head screws extend downwards into the counter bores and are tightly clamped with the limiting positions of the counter bores.