阅读说明：本技术 一种易装卸的打桩锤套限位装置 (Pile hammer sleeve limiting device easy to assemble and disassemble ) 是由 区振棠 吴秀杰 胡敏 卢坤 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种易装卸的打桩锤套限位装置,包括锤套,锤套的一端与打桩锤连接,锤套的另一端用于套接钢管桩,在锤套的内壁上设置有8套限位装置,限位装置包括两块固定卡板和活动卡板,两块固定卡板对称地焊接在锤套的内壁上,活动卡板置于两块固定卡板之间的间隙内,在固定卡板的上端设置有凹槽,活动卡板上设有凸筋,通过凸筋与凹槽相配合,将活动卡板承托在固定卡板上,固定卡板与活动卡板之间通过固定螺栓限位固定。与现有的在锤套内部焊接筋板的方法相比,本发明针对不同尺寸的钢管桩仅需更换活动卡板即可,有效地提高施工效率,缩短工时,并且节省了大量钢板材料以及避免了反复铲除和焊接对锤套母材造成不可逆的损失破坏。(The invention discloses an easily-assembled and disassembled pile hammer sleeve limiting device, which comprises a hammer sleeve, wherein one end of the hammer sleeve is connected with a pile hammer, the other end of the hammer sleeve is used for sleeving a steel pipe pile, 8 sets of limiting devices are arranged on the inner wall of the hammer sleeve, each limiting device comprises two fixed clamping plates and a movable clamping plate, the two fixed clamping plates are symmetrically welded on the inner wall of the hammer sleeve, the movable clamping plate is arranged in a gap between the two fixed clamping plates, a groove is formed in the upper end of each fixed clamping plate, a convex rib is arranged on each movable clamping plate, the movable clamping plates are supported on the fixed clamping plates through the matching of the convex ribs and the grooves, and the fixed clamping plates and the movable clamping plates are limited and fixed through fixing bolts. Compared with the existing method for welding the rib plates in the hammer sleeve, the method has the advantages that only the movable clamping plates need to be replaced aiming at the steel pipe piles with different sizes, the construction efficiency is effectively improved, the working hours are shortened, a large amount of steel plate materials are saved, and irreversible damage to the hammer sleeve base metal caused by repeated shoveling and welding is avoided.)

1. The utility model provides an easy pile hammer cover stop device of loading and unloading, includes the hammer cover, the one end and the pile hammer of hammer cover are connected, the other end of hammer cover is used for cup jointing steel-pipe pile, its characterized in that: the inner wall of the hammer sleeve is at least provided with 6 sets of limiting devices, each limiting device comprises two fixed clamping plates and a movable clamping plate, the two fixed clamping plates are symmetrically welded on the inner wall of the hammer sleeve, a gap is reserved between the two fixed clamping plates, the movable clamping plate is arranged in the gap between the two fixed clamping plates, and the side edge of the movable clamping plate protrudes out of the gap between the two fixed clamping plates; the movable clamping plate is supported on the fixed clamping plate through the matching of the convex ribs and the grooves.

2. The pile hammer sleeve limiting device easy to assemble and disassemble as claimed in claim 1, wherein: the fixing bolt penetrates through the two fixing clamping plates and the movable clamping plate, two ends of the fixing bolt are respectively pressed on the fixing clamping plates on two sides, and the movable clamping plate is limited to longitudinally displace between the two fixing clamping plates.

3. An easily detachable pile driving hammer sleeve limiting device as claimed in claim 1 or 2, wherein: the width of the movable clamping plate is larger than that of the fixed clamping plate.

4. An easily assembled and disassembled pile driving hammer sleeve limiting device as claimed in claim 3, wherein: the inner wall of the hammer sleeve is provided with 8 sets of limiting devices, and each set of limiting devices are arranged in 45-degree equal intervals.

5. The pile hammer sleeve limiting device easy to assemble and disassemble as claimed in claim 4, wherein: the movable clamping plate is provided with lightening holes.

6. The pile hammer sleeve limiting device easy to assemble and disassemble as claimed in claim 5, wherein: and the fixed clamping plate and the movable clamping plate are provided with 30-40-degree inclined slopes towards one end of the hammer sleeve for sleeving the steel pipe pile.

7. The pile hammer sleeve limiting device easy to assemble and disassemble as claimed in claim 6, wherein: an anti-tilting toggle plate is arranged on the outer side of the fixed clamping plate and welded and fixed on the inner wall of the hammer sleeve.

Technical Field

The invention relates to the field of hydraulic pile hammers, in particular to a pile hammer sleeve limiting device easy to assemble and disassemble.

Background

In the operation fields of offshore oil engineering jacket pile foundation construction, offshore wind power foundation pile foundation construction and the like, the hydraulic pile hammer is widely applied as construction key equipment. The hammer core hydraulic system generates high-energy hammering to sink the steel pipe pile into the seabed by a preset depth.

A typical hydraulic pile hammer structure includes: hammer block, anvil, hammer sleeve, etc. The inner diameter of the hammer sleeve is generally slightly larger than the outer diameter of the steel pipe pile, and the hammer sleeve has the functions of enabling the pile hammer to be smoothly sleeved with the steel pipe pile and keeping the position of the pile hammer stable in the hammering operation process. The structure and the material are special, and the price is not very high.

The diameters of the steel pipe piles of the offshore jacket foundation are different according to different bearing capacities and geological conditions, and even at different machine positions of the same project, the diameters of the steel pipe piles are different. In order to meet the requirements of different pile diameter sizes, pile hammer users often purchase the pile hammer sleeves according to the required maximum pile diameter when selecting and purchasing the pile hammer sleeves. When the hammer sleeve needs to be used for small-diameter operation, rib plates are welded inside the hammer sleeve to realize the change of the pile diameter capable of being driven. However, this method has the following disadvantages: firstly, materials and working hours are wasted, a large amount of steel plate materials and welding materials are needed, and a new rib plate needs to be removed and welded when the pile diameter is replaced each time; secondly, the hammer sleeve base metal is irreversibly damaged by long-term repeated welding.

Disclosure of Invention

The invention aims to solve the technical problem of providing an easily-assembled and disassembled pile driving hammer sleeve limiting device, which can replace limiting devices with different specifications according to different diameter sizes of steel pipe piles, so that the hammer sleeve can meet the sleeve joint of the steel pipe piles with different sizes; and stop device is disposable welding, need not to dismantle repeatedly during loading and unloading and weld, can save welding material and avoid welding repeatedly to the damage that the hammer sleeve mother metal caused.

In order to solve the problems, the invention adopts the following technical scheme:

an easily-detachable pile hammer sleeve limiting device comprises a hammer sleeve, one end of the hammer sleeve is connected with a pile hammer, the other end of the hammer sleeve is used for being sleeved with a steel pipe pile, at least 6 limiting devices are arranged on the inner wall of the hammer sleeve, each limiting device comprises two fixed clamping plates and a movable clamping plate, the two fixed clamping plates are welded on the inner wall of the hammer sleeve in a bilateral symmetry mode, a gap is reserved between the two fixed clamping plates, the movable clamping plate is arranged in the gap between the two fixed clamping plates, and the side edge of the movable clamping plate protrudes out of the gap between the two fixed clamping plates; the movable clamping plate is supported on the fixed clamping plate through the matching of the convex ribs and the grooves.

The movable clamping plate is arranged on the base, the fixed clamping plate is arranged on the base, the movable clamping plate is arranged on the base, the fixed clamping plate is arranged on the movable clamping plate, and the movable clamping plate is arranged on the fixed clamping plate.

Furthermore, the width of the movable clamping plate is larger than that of the fixed clamping plates, so that the side edge of the movable clamping plate can protrude from the space between the two fixed clamping plates.

According to the pile hammer sleeve limiting device, the width of the fixing clamping plate is designed to be a fixed value, and the size of the hammer sleeve can be suitable for the diameter of a steel pipe pile with a specific specification under the condition that the fixing clamping plate is only welded; the width of activity cardboard is slightly bigger than the width of fixed cardboard to can formulate the activity cardboard of different width specifications as required in advance, if need cup joint the less steel-pipe pile of specification, then only need can change the internal diameter size of hammer cover through the activity cardboard of installation or change different specifications.

Furthermore, 8 sets of limiting devices are arranged on the inner wall of the hammer sleeve, and each set of limiting devices are arranged in an equal division manner at an angle of 45 degrees.

Preferably, the movable clamping plate is provided with lightening holes, and the lightening holes are formed in the movable clamping plate to lighten the weight of the clamping plate on the premise of meeting the structural strength, so that the clamping plate can be conveniently disassembled and assembled.

Preferably, the fixed clamping plate and the movable clamping plate are provided with 30-40-degree inclined slopes at one ends facing the steel pipe pile, so that a pile driving hammer can conveniently sleeve the pile.

Preferably, the outer side of the fixed clamping plate is provided with an anti-tilting bracket which is welded and fixed on the inner wall of the hammer sleeve, and the clamping plate can be fixed by additionally arranging the anti-tilting bracket, so that the overall structural strength of the limiting device is increased.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, at least 6 pairs of fixed clamping plates are arranged around the inner wall of the hammer sleeve in the hammer sleeve, and movable clamping plates with different specifications are arranged between each pair of fixed clamping plates according to different diameter sizes of the steel pipe pile, so that the gap between the hammer sleeve and the steel pipe pile is filled, and the hammer sleeve can be stably sleeved on the steel pipe piles with different sizes. Compared with the existing method for welding the rib plates in the hammer sleeve, the method disclosed by the invention has the advantages that only the movable clamping plates need to be replaced aiming at the steel pipe piles with different sizes, the operation is simple, the construction efficiency can be effectively improved, the working hours are shortened, in addition, the inner wall of the hammer sleeve is not required to be repeatedly shoveled and welded with new steel plate materials, a large amount of materials are saved, and the irreversible loss damage to the hammer sleeve base metal caused by the repeated shoveling and welding is avoided.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a perspective view of the overall structure of the position limiting device according to the embodiment of the present invention;

FIG. 4 is a schematic perspective view of a fixing clip of the embodiment of the present invention;

fig. 5 is a schematic perspective view of a movable clamping plate in an embodiment of the invention.

In the figure: 1-hammer sleeve, 2-limiting device, 3-fixed clamping plate, 4-movable clamping plate, 5-anti-tilt toggle plate, 6-convex rib, 7-groove, 8-bolt hole and 9-lightening hole.

Detailed Description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and examples so that those skilled in the art can better understand and implement the technical solutions of the present invention.

The invention provides an easily-assembled and disassembled piling hammer sleeve limiting device as shown in figures 1-5, which comprises a hammer sleeve 1, wherein one end of the hammer sleeve 1 is connected with a piling hammer, and the other end of the hammer sleeve 1 is used for sleeving a steel pipe pile; hereinafter, the end of the hammer case 1 connected to the pile driving hammer will be referred to as the upper end, and the end of the hammer case 1 for receiving the steel pipe pile will be referred to as the lower end.

In order to ensure that the hammer sleeve 1 can ensure the pile-sleeving accuracy of the hammer sleeve 1 after the limiting devices 2 are installed, at least 6 limiting devices 2 need to be arranged on the inner wall of the hammer sleeve 1, in the embodiment, as shown in fig. 1, 8 limiting devices 2 are arranged on the inner wall of the cylindrical hammer sleeve around the inner wall, each limiting device 2 is arranged in an equal division way of 45 degrees, each limiting device 2 comprises two fixed clamping plates 3 and one movable clamping plate 4, the two fixed clamping plates 3 are welded on the inner wall of the hammer sleeve 1 in a bilateral symmetry manner, a gap is reserved between the two fixed clamping plates 3, the movable clamping plates 4 are arranged in the gap between the two fixed clamping plates 3, the movement of the movable clamping plates 4 is limited at the left side and the right side through the fixed clamping plates 3, and the effect of fixing the movable clamping plates 4 is achieved; a groove 7 is formed in the upper end of the fixed clamping plate 3, a convex rib 6 matched with the groove 7 is arranged on the upper portion of the movable clamping plate 4, and the movable clamping plate 4 is supported on the fixed clamping plate 3 through the mutual matching of the convex rib 6 and the groove 7;

the two fixed clamping plates 3 and the movable clamping plate 4 are both provided with bolt holes 8, after the movable clamping plate 4 is installed, fixing bolts are used to penetrate through the bolt holes 8 on the fixed clamping plates 3 and the movable clamping plate 4, and two ends of each fixing bolt are tightly pressed on the fixed clamping plates 3 on two sides, so that the effect of preventing the movable clamping plate 4 from longitudinally displacing between the two fixed clamping plates 3 can be achieved, and the movable clamping plate 4 is prevented from falling off in the hammering process; preferably, the fixing bolt is of a type with a nut anti-falling pin.

In the invention, the width of the fixed clamping plates 3 is taken as a fixed value, and the width of the movable clamping plate 4 is larger than that of the fixed clamping plates 3, so that the movable clamping plates 4 can protrude from the side surfaces of the two fixed clamping plates 3; under the condition of only installing the fixed clamping plates 3, the size of the hammer sleeve 1 can be suitable for the diameter of a steel pipe pile of a specific specification, if steel pipe piles of other specifications are smaller, the movable clamping plates 4 can be installed between the two fixed clamping plates 3, and the movable clamping plates 4 abut against the outer wall of the steel pipe pile, so that the hammer sleeve 1 tightly sleeves the steel pipe pile; and the movable clamping plates 4 with different specifications can be replaced according to different diameter sizes of the steel pipe piles, so that the sleeve joint of the hammer sleeve 1 on the steel pipe piles with different diameter sizes is met.

Specifically, in this embodiment, the diameter of the steel pipe pile of the booster station foundation is 3200mm, and the diameter of the steel pipe pile of the fan foundation is 3000mm or 2900 mm. The original inner diameter of the hammer sleeve 1 of the pile hammer is 3720mm, the width of the fixed clamping plate 3 is 250mm, after the fixed clamping plate 3 is installed on the inner wall of the hammer sleeve 1, the inner diameter of the hammer sleeve 1 is changed into 3220mm, and the pile hammer is suitable for the booster station foundation steel pipe pile with the outer diameter of phi 3200 mm. When the phi 3000mm fan foundation steel pipe pile sinking needs to be carried out, the movable clamping plate 4 with the width of 350mm is installed in place, the inner diameter of the hammer sleeve 1 is changed into 3020mm, and the construction requirement can be met. When the steel pipe pile with the diameter of 2900mm needs to be sunk, the movable clamping plate 4 with the width of 400mm is replaced, and the construction requirement can be met.

In this embodiment, all be provided with two anti-tilt brackets 5 in every fixed cardboard 3's the outside, anti-tilt bracket 5 welded fastening is on hammer cover 1 inner wall, through increasing anti-tilt bracket 5, can play fixed effect to fixed cardboard 3, strengthens stop device 2's overall structure intensity.

On the premise of meeting the structural strength, the movable clamping plate 4 is provided with the lightening hole 9 to lighten the weight of the movable clamping plate 4, so that the movable clamping plate 4 is convenient to disassemble and assemble.

Preferably, the lower ends of the fixed clamping plate 3 and the movable clamping plate 4 are provided with 30-40-degree inclined slopes, so that the pile driving hammer can conveniently drive the pile sleeve hammer.

The above-mentioned embodiments are merely preferred embodiments of the present invention, but should not be construed as limiting the invention, and any variations and modifications based on the concept of the present invention should fall within the scope of the present invention, which is defined by the claims.