CN220768051U - Holding clamp type hydraulic hammering pile driving hammer - Google Patents

Abstract

The utility model discloses a holding-clamping type hydraulic hammering pile driving hammer which comprises a wedge block type pile holding device, an anvil block, a hammer core, a door type hammer frame and two hammering cylinders for driving the hammer core to reciprocate from top to bottom to strike an anvil block, wherein an avoidance gap is formed in the middle of a top plate of the hammer frame, penetrating through holes for penetrating precast piles are respectively formed in the middle of the hammer core and the anvil block, pile holding holes for holding precast piles are formed in the middle of the wedge block type pile holding device, a pile body of a precast pile to be constructed can penetrate through the pile driving hammer, and accordingly the construction height of pile driving is close to the pile length of a single precast pile.

Description

Holding clamp type hydraulic hammering pile driving hammer

Technical Field

The utility model relates to the technical field of pile foundation construction equipment, in particular to a holding clamping type hydraulic hammering pile hammer.

Background

The hammering pile driver has the advantages of quick construction, reliable quality, high bearing capacity, low cost, wide applicable stratum and the like, and is widely applied to pile foundation engineering of various engineering constructions.

Hammer pile driver devices typically include a pile hammer, a pile frame and a power unit. The traditional hammering method is to set a pile cap on the pile top, and hammer the pile cap through various hammers (drop hammer, steam hammer, diesel hammer and hydraulic hammer) to send the pile into the established stratum. The traditional hammering pile method is convenient to construct and simple in principle, but the pile frame body height (the pile frame body height is equal to the length of a single-section construction pile, the height of a hammer, the stroke of the hammer and the height of the construction operation) is necessarily large, and the traditional hammering pile driver has the following defects:

1) A low clearance field cannot be used. The higher pile frame limits the application range of the hammering pile, so that the hammering pile cannot be used in some low-clearance scenes (such as indoor foundation reinforcement, under supporting beams in a foundation pit, under an overhead bridge, in a tunnel and the like).

2) The pile head is prone to bursting problems. The pile end of the precast pile is dense in steel bars and inconsistent in elastic modulus of the steel bars and the concrete due to the structural reason, and the concrete at the pile end is difficult to cast and compact. The pile hammer blows the pile top to generate high hammering compressive stress, and simultaneously, the pile hammer generates hammering tensile stress on the pile top when rebounding, so that the quality problem of pile top bursting easily occurs during continuous hammering.

In the prior art, a pile hammer with application number of CN93241680.2 and an indoor pile driver using the pile hammer are disclosed, wherein the pile hammer comprises a hammer sleeve with a hole at the bottom; a pile cap capable of penetrating the hole and sliding, a limiting device capable of controlling the sliding range of the pile cap, and a first connector for sleeving a pile at the bottom of the pile cap, wherein the limiting device is arranged on the hammer sleeve; a weight slidably mounted on an upper portion of the pile cap in the hammer case and capable of striking the upper portion of the pile cap from top to bottom; a positioning device for ensuring that the weight acts on the pile cap is arranged on the weight, and the positioning device is a second interface for sleeving the upper part of the pile cap; a hydraulic means for lifting the weight so that the weight can be landed on the pile cap; and a first cushioning means for cushioning the impact of the weight on the pile cap and/or a second cushioning means between the pile cap and the hammer case; the prior art can save the height of the frame body of a part of pile frames, and the minimum construction height required by the construction of the utility model is equal to the length of a single-section construction pile, the height of a hammer and the stroke of the hammer, but the utility model still cannot be used in some low-clearance scenes, in addition, the pile is driven by adopting the traditional pile head hammering method, and the pile head is still easy to burst.

Therefore, there is a need to develop a clamp type hydraulic hammering pile driving hammer which can be used in a low clearance scene and is not easy to generate a pile head bursting phenomenon.

Disclosure of Invention

The utility model aims to provide the holding-clamping type hydraulic hammering pile driving hammer aiming at the defects, based on various requirements of limited-height pile driving, the pile driving hammer structure of pile driving equipment is improved, so that a pile body of a precast pile to be constructed can pass through the pile driving hammer, the construction height of pile driving is close to the pile length of a single precast pile, compared with the prior art, the minimum construction height required during construction is reduced by the height of a hammer core and the height of the movement stroke of the hammer core, the pile driving hammer can be used in a low-clearance scene, and in addition, the stressed point of pile hammering is moved to the circumferential side surface of the pile body by holding the side of the pile driving wedge block of the wedge block holding pile driving device, and the pile is not at the pile end, so that the problem of pile head bursting is solved, and the construction quality is ensured.

The technical scheme is as follows:

the utility model provides a hold-clamp type hydraulic hammering pile driving hammer, includes wedge type pile holding device, anvil, hammer core, door-type hammer rest and two hammering cylinders that are used for driving the hammer core to reciprocate from top to bottom and strike the anvil, door-type hammer rest includes hammer rest roof, first guide rail, second guide rail, the upper end of first guide rail, second guide rail respectively with the bottom surface of hammer rest roof is connected, wedge type pile holding device's both sides respectively with the lower extreme of first guide rail, second guide rail is connected, the anvil is installed in wedge type pile holding device's top, the both sides of hammer core respectively with first guide rail, second guide rail vertical sliding connection, two hammering cylinders are installed respectively the both ends of hammer rest roof, two hammering cylinders's piston rod lower extreme respectively with the both sides of hammer core are articulated; the middle of the top plate of the hammer frame is provided with an avoidance gap, a first penetrating through hole and a second penetrating through hole for penetrating the precast pile are respectively arranged in the middle of the hammer core and the anvil block, a pile-holding hole for holding the precast pile is arranged in the middle of the wedge-type pile-holding device, and the avoidance gap, the first penetrating through hole, the second penetrating through hole and the pile-holding hole are vertically opposite from top to bottom in sequence.

The anvil comprises an anvil body, a hammering base plate and a hammering buffer cushion, wherein the anvil body, the hammering base plate and the hammering buffer cushion are respectively annular, an annular buffer groove is formed in the upper portion of the anvil body, the hammering buffer cushion is installed in the buffer groove, the hammering base plate is installed above the hammering buffer cushion and is matched and covered on a notch of the buffer groove, and the inner ring of the anvil body is annular to form a second penetrating through hole.

The wedge-type pile holding device comprises a wedge-shaped cylinder body, a plurality of pile clamping wedges, a plurality of hydraulic clamping cylinders and a plurality of cylinder bases, wherein the wedge-shaped cylinder body is provided with an inner cylinder hole, the inner cylinder hole is gradually enlarged from top to bottom to form a cone frustum, the thickness of the pile clamping wedges is gradually enlarged from top to bottom, the hydraulic clamping cylinders comprise clamping cylinder bodies and clamping piston rods, the upper ends of the clamping piston rods are hinged to the bottom surface of an anvil, the clamping cylinder bodies are connected with the bottom surface of the pile clamping wedges through the cylinder bases, the pile clamping wedges are telescopically inserted into the inner cylinder hole from bottom to top, and the inner side surfaces of the pile clamping wedges enclose the pile holding holes.

The hydraulic clamping cylinder is characterized by further comprising four cylinder lifting lugs, the number of the hydraulic clamping cylinders, the pile clamping wedges and the cylinder bases corresponds to the number of the cylinder lifting lugs, the four cylinder lifting lugs are uniformly arranged on the bottom surface of the anvil block, and the clamping piston rod of each hydraulic clamping cylinder is hinged with each cylinder lifting lug.

The pile hammer is characterized by further comprising two pile hammer lifting lugs, wherein the two pile hammer lifting lugs are arranged on the top surface of the top plate of the hammer frame and are positioned on two sides of the avoidance notch.

The hammer rest further comprises two limiting buffer pads, wherein the two limiting buffer pads are respectively arranged on the bottom surface of the top plate of the hammer rest and are positioned right above the hammer core.

The hammer rest is characterized by further comprising two first oil cylinder buffer washers and two second oil cylinder buffer washers, wherein the two hammering oil cylinders are respectively arranged at two ends of the top plate of the hammer rest through the first oil cylinder buffer washers and the second oil cylinder buffer washers.

The hammering cylinder comprises a hammering cylinder body and cylinder fixing washers, cylinder installation through holes are respectively formed in two ends of a top plate of the hammer frame, the hammering cylinder body of the hammering cylinder penetrates through the first cylinder buffering washer, the cylinder fixing washers, the second cylinder buffering washer and the cylinder installation through holes from top to bottom, the outer side face of the hammering cylinder body is fixedly connected with the cylinder fixing washers, and the cylinder gland is tightly covered on the outer sides of the first cylinder buffering washer, the cylinder fixing washers and the second cylinder buffering washers and is connected with the top face of the top plate of the hammer frame.

The hammering cylinder further comprises hammering piston rods, hammer lugs are respectively arranged on two sides of the hammer core, and the lower ends of the hammering piston rods are hinged with the hammer core through the hammer lugs.

The two sides of the hammer core are also respectively provided with a sliding groove, and the hammer core is vertically and slidably connected with the first guide rail and the second guide rail through two sliding grooves.

It should be noted that:

the foregoing "first and second …" do not represent a specific number or order, but are merely for distinguishing between names.

In the description of the present utility model, it should be understood that the azimuth or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship conventionally put in place when the product of the present utility model is used, or the azimuth or positional relationship conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

The advantages and principles of the utility model are described below:

1. the clamping type hydraulic hammering pile hammer provided by the utility model solves the problem of pile head bursting through ingenious structural improvement design, and ensures the construction quality. The pile holding device comprises a wedge type pile holding device, an anvil block, a hammer core, a door type hammer frame and two hammering cylinders for driving the hammer core to strike the anvil block from top to bottom, wherein an avoidance gap is formed in the middle of a top plate of the hammer frame, a first penetrating through hole and a second penetrating through hole for penetrating through precast piles are formed in the middle of the hammer core and the anvil block respectively, pile holding holes for holding the precast piles are formed in the middle of the wedge type pile holding device, and based on various requirements of piling in a limited height scene, the pile holding device is improved in design through the pile driving hammer structure of pile driving equipment, so that a pile body of a precast pile to be constructed can penetrate through the pile driving hammer, the pile body of the pile holding device can be held tightly by the clamping wedge block of the wedge type pile holding device, the height of the pile frame can be greatly reduced, and the minimum construction height of the precast pile in construction is close to the pile length of a single-section precast pile.

2. The holding-clamping type hydraulic hammering pile hammer provided by the utility model is characterized in that the anvil is hammered by the hammer core, and hammering energy is transmitted to the pile body by the anvil through the pile clamping wedge block of the wedge block type pile holding device; the pile driver formed by the clamping type hydraulic hammering pile hammer has the advantages that the overall height of the pile driver is greatly reduced, so that the pile driver is better in stability, the chassis base can be greatly reduced, the equipment is lighter, and the pile driver is more flexible and convenient in construction.

3. When the holding-clamping type hydraulic hammering pile hammer is used for hammering piles, stress points of the piles are positioned at contact positions of pile clamping wedges of the wedge-type pile holding device and circumferential side surfaces of pile bodies, and the pile points are not positioned at pile ends, so that the quality of precast pile bodies is ensured, and the problem of bursting quality of pile heads is avoided.

4. According to the holding-clamping type hydraulic hammering pile driving hammer provided by the utility model, the lower ends of the piston rods of the two hammering cylinders are respectively hinged with the two sides of the hammer core, so that the two hammering cylinders and the hammer core are not arranged on the traditional axis, the structure is more compact, the whole hammer volume is reduced in a multiplied way, the construction in a narrow space is convenient, and the stability of the lifting hammer is improved by the double hammering cylinders.

5. The clamping type hydraulic hammering pile driving hammer provided by the utility model adopts the door type hammer frame, so that an operator can conveniently observe the movement condition of the hammer core directly, and when working in a limited space, potential safety hazards can exist due to space limitation and vibration and noise during piling, therefore, the hollow hammer body design of the pile driving hammer enables the visual field of the operator to be wider, and the hammer can be stopped by one key at any time, so that the running safety of equipment is maximized.

6. The anvil block comprises the anvil body, the hammering pad plate and the hammering buffer pad, and preferably, the hammering buffer pad adopts a steel wire rope, and the steel wire rope is used as the hammering buffer pad, so that the buffer effect is achieved, the noise is reduced, and the durability of the buffer part is increased, thereby reducing the replacement of vulnerable parts and prolonging the service life of equipment.

7. The wedge type pile holding device comprises a wedge-shaped cylinder body, a plurality of pile holding wedges, a plurality of hydraulic clamping cylinders and a plurality of cylinder bases, wherein two sides of the wedge type pile holding device are respectively connected with the lower ends of two guide rails of a door type hammer frame, two sides of a hammer core are respectively vertically and slidably connected with the two guide rails, the wedge type pile holding device and the hammer core are integrally designed, the space constraint of a traditional pile cap is further broken, the whole hammer height is further shortened, and when the pile head enters the pile holding wedges of the wedge type pile holding device, the hydraulic clamping cylinders are started to push the pile holding wedges to fix the whole pile on equipment, so that the pile falling phenomenon is prevented under the condition of limited space; the design not only improves the construction efficiency, but also improves the safety, and protects the safety of equipment and constructors.

8. The hydraulic clamping cylinder is characterized by further comprising four cylinder lifting lugs, wherein the cylinder lifting lugs are arranged, so that the clamping piston rod is conveniently hinged with the bottom surface of the anvil, and the flexibility of the hydraulic clamping cylinder in the hinging process with the anvil is improved.

9. The utility model also comprises two pile hammer lifting lugs, and the pile hammer lifting lugs are arranged, so that the pile hammer is convenient to lift.

10. The utility model also comprises two limit buffer pads, and the two limit buffer pads can slow down the impact on the top plate of the hammer frame of the door type hammer frame when the hammer core moves upwards in a reciprocating manner.

11. According to the utility model, the two hammering cylinders are respectively arranged at two ends of the top plate of the hammer frame through the first cylinder buffer gasket and the second cylinder buffer gasket, and the two cylinder buffer gaskets can reduce the vibration impact of the hammering cylinders on the door type hammer frame.

Drawings

Fig. 1 is a schematic view of a perspective outline structure of a clamping hydraulic hammering pile hammer according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a clamping hydraulic hammer of an embodiment of the present utility model.

Fig. 3 is a schematic side view of a holding-clamping hydraulic hammering pile hammer according to an embodiment of the present utility model.

Fig. 4 is a schematic bottom view of a clamping hydraulic hammering pile hammer according to an embodiment of the present utility model.

Fig. 5 is a schematic top view of a clamping hydraulic hammering pile hammer according to an embodiment of the present utility model.

Fig. 6 is a schematic view of the cross-sectional A-A configuration of fig. 5.

Reference numerals illustrate:

10. wedge type pile holding device 11, wedge cylinder 111, inner cylinder hole 12, pile clamping wedge 13, hydraulic clamping cylinder 131, clamping cylinder block 132, clamping piston rod 14, cylinder base 15, pile holding hole 20, anvil 21, second through hole 22, anvil 221, buffer groove 23, hammering pad 24, hammering buffer pad 30, hammer core 31, first through hole 32, hammer lug 33, chute 40, door type hammer rest 41, hammer rest top plate 411, avoiding gap 42, first guide rail 43, second guide rail 50, hammering cylinder 51, hammering cylinder block 52, cylinder fixing gasket 53, hammering piston rod 61, pile hammer lifting lug 62, limit buffer pad 63, cylinder lifting lug 71, first cylinder buffer gasket 72, second cylinder buffer gasket 73, cylinder gland 80, precast pile cover.

Detailed Description

The following describes embodiments of the present utility model in detail.

The utility model provides a holding-clamping type hydraulic hammering pile hammer which is an improved pile hammer developed for being used in a height-limiting scene such as indoor foundation reinforcement, under a supporting beam in a foundation pit, under an overhead bridge, in a tunnel, at the bottom of a high-voltage wire and the like and solving the problem of pile head bursting.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

Example 1:

referring to fig. 1 to 6, the clamping hydraulic hammering pile driving hammer provided in this embodiment includes a wedge type pile driving device 10, an anvil 20, a hammer core 30, a door type hammer frame 40, and two hammering cylinders 50 for driving the hammer core 30 to reciprocate from top to bottom to strike the anvil 20, wherein the door type hammer frame 40 includes a hammer frame top plate 41, a first guide rail 42, and a second guide rail 43, the upper ends of the first guide rail 42 and the second guide rail 43 are respectively connected with the bottom surface of the hammer frame top plate 41, two sides of the wedge type pile driving device 10 are respectively connected with the lower ends of the first guide rail 42 and the second guide rail 43, the anvil 20 is mounted above the wedge type pile driving device 10, two sides of the hammer core 30 are respectively connected with the first guide rail 42 and the second guide rail 43 in a vertical sliding manner, the two hammering cylinders 50 are respectively mounted at two ends of the hammer frame top plate 41, and the lower ends of piston rods of the two hammering cylinders 50 are respectively hinged with two sides of the hammer core 30; the middle of the top plate 41 of the hammer frame is provided with an avoidance gap 411, the middle of the hammer core 30 and the anvil 20 is respectively provided with a first penetrating through hole 31 and a second penetrating through hole 21 for penetrating the precast pile 80, the middle of the wedge-type pile holding device 10 is provided with a pile holding hole 15 for holding the precast pile 80, and the avoidance gap 411, the first penetrating through hole 31, the second penetrating through hole 21 and the pile holding hole 15 are vertically opposite from top to bottom in sequence.

The middle of the top plate 41 of the hammer frame is provided with the avoidance gap 411, the middle of the hammer core 30 and the anvil 20 is respectively provided with the first penetrating through hole 31 and the second penetrating through hole 21 for penetrating the precast pile 80, the middle of the wedge type pile-holding device 10 is provided with the pile-holding hole 15 for holding the precast pile 80, the pile body of the precast pile 80 to be constructed can pass through the pile hammer and the side surface of the pile body can be held tightly by the pile-holding wedge block 12 of the wedge type pile-holding device 10, so that the frame body height of the pile frame can be greatly reduced, the minimum construction height of the precast pile 80 during construction is close to the pile length of the single precast pile 80, and compared with the prior art, the minimum construction height required during construction is reduced by the height of the hammer core 30 and the movement stroke height of the hammer core 30, so that the pile-holding type hydraulic pile-holding hammer is applicable to the scene of ultra-low clearance (such as indoor foundation reinforcement, the lower side support beam in a foundation pit, the lower side of a high-frame support beam, the lower side of a tunnel, the bottom of a high-voltage line and the like), the construction adaptability of a side pile and a corner pile is stronger, and the construction pile is more convenient to place on a ship.

When the pile driving device is used, the anvil 20 is hammered through the hammer core 30, and the anvil 20 transmits hammering energy to the pile body through the pile clamping wedge block 12 of the wedge block pile holding device 10, and as the pile body of the precast pile 80 to be constructed can pass through the pile driving hammer, the pile length of a single pile is not limited by the height of the pile driving hammer, and the pile length of the single pile can be flexibly adjusted according to the construction conditions on site, so that the number of joints is reduced; the pile driver formed by the clamping type hydraulic hammering pile hammer has the advantages that the overall height of the pile driver is greatly reduced, so that the pile driver is better in stability, the chassis base can be greatly reduced, the equipment is lighter, and the pile driver is more flexible and convenient in construction. When hammering pile construction is carried out, the stress point of the pile is positioned at the contact position of the pile clamping wedge block 12 of the wedge block pile holding device 10 and the circumferential side surface of the pile body, and the pile body quality of the prefabricated precast pile 80 is ensured instead of the pile end, so that the quality problem of pile head bursting can not occur.

The lower ends of the piston rods of the two hammering cylinders 50 are respectively hinged with the two sides of the hammer core 30, so that the two hammering cylinders 50 and the hammer core 30 are not arranged on the traditional axis, the structure is more compact, the whole hammer volume is reduced in a multiplied way, construction in a narrow space is facilitated, and the stability of the lifting hammer is improved by the double hammering cylinders 50. The door type hammer frame 40 is adopted, so that an operator can conveniently observe the movement condition of the hammer core 30 directly, and when the operation is performed in a limited space, the potential safety hazards caused by space limitation and vibration and noise during piling can be avoided.

The anvil 20 includes an anvil body 22, a hammering pad 23, and a hammering cushion 24, wherein the anvil body 22, the hammering pad 23, and the hammering cushion 24 are respectively annular, an annular buffer groove 221 is disposed above the anvil body 22, the hammering cushion 24 is mounted in the buffer groove 221, the hammering pad 23 is mounted above the hammering cushion 24 and is matched and covered on a notch of the buffer groove 221, and an inner ring of the anvil body 22 is annular to form a second through hole 21. Preferably, the hammering cushion 24 adopts a steel wire rope, and the steel wire rope is used as the hammering cushion 24, so that the buffering effect is achieved, the noise is reduced, and the durability of the buffering part is increased, thereby reducing the replacement of vulnerable parts and prolonging the service life of equipment.

The wedge-type pile holding device 10 comprises a wedge-shaped cylinder body 11, a plurality of pile clamping wedges 12, a plurality of hydraulic clamping cylinders 13 and a plurality of cylinder bases 14, wherein the wedge-shaped cylinder body 11 is provided with an inner cylinder hole 111, the inner cylinder hole 111 is gradually enlarged from top to bottom to form a cone frustum, the thickness of the pile clamping wedges 12 is gradually enlarged from top to bottom, the hydraulic clamping cylinders 13 comprise clamping cylinder bodies 131 and clamping piston rods 132, the upper ends of the clamping piston rods 132 are hinged with the bottom surface of an anvil 20, the clamping cylinder bodies 131 are connected with the bottom surface of the pile clamping wedges 12 through the cylinder bases 14, the pile clamping wedges 12 are telescopically inserted into the inner cylinder hole 111 from bottom to top, and the inner side surfaces of the pile clamping wedges 12 enclose a pile holding hole 15. The two sides of the wedge type pile holding device 10 are respectively connected with the lower ends of the two guide rails of the door type hammer frame 40, the two sides of the hammer core 30 are respectively vertically and slidably connected with the two guide rails, the wedge type pile holding device 10 and the hammer core 30 are integrally designed, the space constraint of a traditional pile cap is further broken, the whole hammer height is further shortened, when the pile head enters the pile clamping wedge block 12 of the wedge type pile holding device 10 in operation, the hydraulic clamping cylinder 13 is started to push the pile clamping wedge block 12, the whole pile is fixed on equipment, and the pile falling phenomenon is prevented under the condition of limited space; the design not only improves the construction efficiency, but also improves the safety, and protects the safety of equipment and constructors.

Example 2:

the holding and clamping type hydraulic hammering pile driving hammer provided in the embodiment 2 of the present utility model is basically the same as the embodiment 1, and is different in that: the clamping type hydraulic hammering pile driving hammer further comprises four cylinder lifting lugs 63, two pile hammer lifting lugs 61, two limiting buffer cushions 62, two first cylinder buffer gaskets 71, two second cylinder buffer gaskets 72 and two cylinder pressing covers 73, the number of hydraulic clamping cylinders 13, pile clamping wedges 12 and cylinder bases 14 corresponds to that of the cylinder lifting lugs 63, the four cylinder lifting lugs 63 are uniformly distributed on the bottom surface of the anvil 20, and clamping piston rods 132 of the hydraulic clamping cylinders 13 are hinged with the cylinder lifting lugs 63. The cylinder lifting lug 63 is convenient for hinging the clamping piston rod 132 with the bottom surface of the anvil 20, so that the flexibility of hinging the hydraulic clamping cylinder 13 with the anvil 20 is improved.

Two hammer lugs 61 are mounted on the top surface of the hammer carrier top plate 41 and are located on both sides of the escape notch 411. The pile hammer lifting lug 61 is arranged, so that the pile hammer is convenient to lift.

Two limit cushions 62 are respectively mounted on the bottom surface of the hammer rest top plate 41 and located directly above the hammer core 30. The two limit cushions 62 can slow down the impact on the frame top plate 41 of the gate-type frame 40 when the core 30 reciprocates upward.

The hammering cylinder 50 includes a hammering cylinder body 51, a cylinder fixing washer 52, and a hammering piston rod 53, two ends of the hammer frame top plate 41 are respectively provided with a cylinder installation through hole, the hammering cylinder body 51 of the hammering cylinder 50 passes through the first cylinder buffering washer 71, the cylinder fixing washer 52, the second cylinder buffering washer 72, and the cylinder installation through hole from top to bottom, an outer side surface of the hammering cylinder body 51 is fixedly connected with the cylinder fixing washer 52, and a cylinder gland 73 is tightly covered on the outer sides of the first cylinder buffering washer 71, the cylinder fixing washer 52, and the second cylinder buffering washer 72, and is connected with the top surface of the hammer frame top plate 41. The two hammering cylinders 50 are respectively installed at two ends of the top plate 41 of the hammer frame through a first cylinder buffer washer 71 and a second cylinder buffer washer 72, and the two cylinder buffer washers can reduce vibration impact of the hammering cylinders 50 on the door type hammer frame 40.

The hammer lugs 32 are respectively arranged on two sides of the hammer core 30, and the lower end of the hammering piston rod 53 is hinged with the hammer core 30 through the hammer lugs 32. The two sides of the hammer core 30 are also respectively provided with a sliding groove 33, and the hammer core 30 is vertically and slidably connected with the first guide rail 42 and the second guide rail 43 through the two sliding grooves 33.

The precast pile according to the present utility model may be a concrete precast pile having various structural shapes such as a circular pile, fang Guanzhuang, a cylindrical pile, a square pile, etc., and it is needless to say that the pile hammer according to the present utility model may be used to construct a steel pipe pile, a steel sheet pile, a wooden pile, etc.

The prototype of the utility model has been actually measured on research and development test sites in a company, and practical application shows that the clamping type hydraulic hammering pile hammer provided by the utility model can be used in low clearance scenes (such as indoor foundation reinforcement, under a supporting beam in a foundation pit, under an overhead bridge, in a tunnel, under a high-voltage line bottom and the like with a clearance height of 3-5 meters), can meet the requirements of pile efficiency, pile quality, safety and the like, solves the problem of pile head bursting which is easy to occur in the conventional technology, and can ensure construction quality and construction efficiency.

The foregoing is merely exemplary embodiments of the present utility model, and is not intended to limit the scope of the present utility model; any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims (10)

1. The clamping type hydraulic hammering pile driving hammer is characterized by comprising a wedge type pile clamping device, an anvil block, a hammer core, a door type hammer frame and two hammering cylinders for driving the hammer core to reciprocate downwards from top to bottom to strike the anvil block, wherein the door type hammer frame comprises a hammer frame top plate, a first guide rail and a second guide rail, the upper ends of the first guide rail and the second guide rail are respectively connected with the bottom surface of the hammer frame top plate, the two sides of the wedge type pile clamping device are respectively connected with the lower ends of the first guide rail and the second guide rail, the anvil block is arranged above the wedge type pile clamping device, the two sides of the hammer core are respectively connected with the first guide rail and the second guide rail in a vertical sliding manner, the two hammering cylinders are respectively arranged at the two ends of the hammer frame top plate, and the lower ends of piston rods of the two hammering cylinders are respectively hinged with the two sides of the hammer core; the middle of the top plate of the hammer frame is provided with an avoidance gap, a first penetrating through hole and a second penetrating through hole for penetrating the precast pile are respectively arranged in the middle of the hammer core and the anvil block, a pile-holding hole for holding the precast pile is arranged in the middle of the wedge-type pile-holding device, and the avoidance gap, the first penetrating through hole, the second penetrating through hole and the pile-holding hole are vertically opposite from top to bottom in sequence.

2. The clamp hydraulic hammering pile hammer of claim 1, wherein the anvil comprises an anvil body, a hammering pad plate and a hammering buffer pad, the anvil body, the hammering pad plate and the hammering buffer pad are respectively annular, an annular buffer groove is arranged above the anvil body, the hammering buffer pad is arranged in the buffer groove, the hammering pad plate is arranged above the hammering buffer pad and is matched and covered on a notch of the buffer groove, and the annular inner ring of the anvil body forms the second penetrating through hole.

3. The pile holding device comprises a wedge-shaped cylinder body, a plurality of pile clamping wedges, a plurality of hydraulic clamping cylinders and a plurality of cylinder bases, wherein the wedge-shaped cylinder body is provided with an inner cylinder hole, the inner cylinder hole is gradually enlarged from top to bottom to form a cone frustum, the thickness of the pile clamping wedges is gradually enlarged from top to bottom, the hydraulic clamping cylinders comprise clamping cylinder bodies and clamping piston rods, the upper ends of the clamping piston rods are hinged with the bottom surface of the anvil, the clamping cylinder bodies are connected with the bottom surface of the pile clamping wedges through the cylinder bases, the pile clamping wedges are telescopically inserted into the inner cylinder hole from bottom to top, and the inner side surfaces of the pile clamping wedges enclose the pile holding hole.

4. The holding and clamping type hydraulic hammering pile driving hammer of claim 3, further comprising four cylinder lifting lugs, wherein the number of the hydraulic clamping cylinders, the pile clamping wedges and the cylinder bases corresponds to the number of the cylinder lifting lugs, the four cylinder lifting lugs are uniformly arranged on the bottom surface of the anvil, and the clamping piston rods of the hydraulic clamping cylinders are hinged with the cylinder lifting lugs.

5. The clasping hydraulic hammering pile hammer of claim 1 further comprising two pile hammer lifting lugs, two of said pile hammer lifting lugs being mounted on the top surface of said top plate of said hammer carrier and being located on either side of said relief notch.

6. The clasping hydraulic hammering pile driving hammer of claim 1, further comprising two limit cushions, wherein the two limit cushions are respectively mounted on the bottom surface of the top plate of the hammer frame and are positioned right above the hammer core.

7. A holding and clamping hydraulic hammer according to any one of claims 1 to 6 and including two first cylinder cushion rings, two second cylinder cushion rings, two of said hammer cylinders being mounted at opposite ends of said hammer frame top plate by said first cylinder cushion rings, second cylinder cushion rings, respectively.

8. The holding-clamping hydraulic hammering pile driving hammer of claim 7, further comprising two cylinder covers, wherein the hammering cylinder comprises a hammering cylinder body and cylinder fixing washers, cylinder installation through holes are respectively formed in two ends of a top plate of the hammer frame, the hammering cylinder body of the hammering cylinder penetrates through the first cylinder buffering washer, the cylinder fixing washer, the second cylinder buffering washer and the cylinder installation through holes from top to bottom, the outer side face of the hammering cylinder body is fixedly connected with the cylinder fixing washers, and the cylinder covers are tightly covered on the outer sides of the first cylinder buffering washer, the cylinder fixing washer and the second cylinder buffering washer and are connected with the top surface of the top plate of the hammer frame.

9. The holding and clamping type hydraulic hammering pile driving hammer as claimed in claim 8, wherein the hammering cylinder further comprises hammering piston rods, hammer lugs are respectively arranged on two sides of the hammer core, and the lower ends of the hammering piston rods are hinged with the hammer core through the hammer lugs.

10. The holding and clamping type hydraulic hammering pile driving hammer as claimed in claim 9, wherein two sides of the hammer core are respectively provided with a sliding groove, and the hammer core is vertically and slidably connected with the first guide rail and the second guide rail through two sliding grooves.