Double-crank type clamp for high-frequency hydraulic vibration pile hammer

Abstract

The utility model discloses a double-crank type clamp for a high-frequency hydraulic vibration pile hammer, which comprises a frame body assembly, a fixed crank, a middle oil cylinder, a movable crank, pile clamping moving teeth, a locking screw and a fixed toothed plate, the frame body assembly comprises an L-shaped frame body, and the middle part and the lower part of the fixed crank are hinged to the L-shaped frame body through a hinge shaft; the middle oil cylinder comprises a cylinder body and a piston shaft, the cylinder body is hinged to the upper portion of the fixed crank through a hinge shaft, the end of the piston shaft is hinged to the movable crank through a hinge shaft, the middle of the movable crank is hinged to the L-shaped frame body through a hinge shaft, and the pile clamping moving teeth are hinged to the lower portion of the movable crank through a hinge shaft; the fixed toothed plate is detachably fixed at the lower part of the L-shaped frame body; and the middle oil cylinder operates to enable the piston shaft to drive the movable crank to operate, so that the pile clamping moving teeth approach the fixed toothed plate. The two cranks are used for supporting the oil cylinder, stress is converted to the two cranks and the pin shaft as much as possible, the stress or pressure at the position of the fixed toothed plate is greatly reduced, and cracking during high-strength work is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel sheet pile technology especially relates to a double-crank type clamp for high-frequency hydraulic vibration pile hammer. BACKGROUND

[0002] At present, pile hammer is one of the important equipment in pile foundation construction, which is widely used in the foundation construction of industrial and civil buildings, ports, wharfs, bridges and the like, has the advantages of high pile driving efficiency, low cost, pile head not easy to damage, small pile deformation and the like. And with the rapid development of modern construction industry, pile foundation has gradually developed from wooden pile to reinforced concrete pile or steel pile. The types of piles can be generally divided into two categories: precast pile and cast-in-place pile. The precast pile is mainly driven into the soil by hammering method. Its construction machinery has also developed from the initial drop hammer, steam hammer and diesel hammer to hydraulic vibration pile hammer.

[0003] The patent document with the application number "CN202022008236.3" discloses a stable pile driver for traffic engineering construction, which comprises two cross frames, a motor, a crank wheel, an upper support plate, a lower support plate, a damping device and a lifting device. The damping device is installed between the upper support plate and the lower support plate, and the lifting device is installed at the bottom of the lower support plate. The stable pile driver for traffic engineering construction replaces manual pile driving by the motor cooperating with the crank wheel, the first connecting rod, the second connecting rod, the third connecting rod, the cross frame, the first sliding block, the guide rail, the sliding rod and the pile hammer, saves human resources and improves work efficiency. The height position of the pile hammer is adjusted by setting the hydraulic cylinder and the hydraulic telescopic rod at the bottom of the lower support plate to cope with various situations.

[0004] The patent document with the application number "CN202020402297.5" discloses a cylinder diesel hammer hydraulic type drop hammer device. It comprises a cylinder diesel pile hammer and a landing gear. The lower cylinder outer surface upper part of the cylinder diesel pile hammer is fixedly provided with an oil cylinder mounting bracket. The upper part of the cylinder body of the lifting oil cylinder is connected to the oil cylinder mounting bracket through a hoop. The front end of the piston rod of the lifting oil cylinder is hinged to the oil cylinder upper support through a pin shaft. The oil cylinder upper support is fixedly arranged at the lower part of the landing gear. A release oil cylinder support is fixedly arranged on the landing gear. The cylinder body of the release oil cylinder is hinged to the release oil cylinder support through a pin shaft. The front end surface of the piston rod of the release oil cylinder faces the starting crank. The utility model releases the upper piston at any height position under the joint action of the lifting oil cylinder and the release oil cylinder, thereby performing small energy pile driving operation and improving the pile driving efficiency and safety of the diesel hammer.

[0005] The above patent document combined with the prior art discloses the following defects of the existing clamp for high-frequency hydraulic vibration pile hammer:

[0006] 1. The existing steel sheet pile clamp mouth is easy to crack at the key parts such as the fixed tooth side under the corresponding difficult driving and pulling conditions.

[0007] 2. As excavators become increasingly powerful, the requirements for clamp strength also increase, and existing products cannot keep up. Utility Model Content

[0008] To overcome the shortcomings of existing technologies, this utility model provides a double-crank type clamp for a high-frequency hydraulic vibratory pile driver, which solves the problem of easy cracking.

[0009] The first aspect of this utility model is to provide a double-crank type clamp for a high-frequency hydraulic vibratory pile driver, comprising a frame assembly, a fixed crank, a central cylinder, a movable crank, a pile clamping moving gear, a locking screw, a fixed gear plate, a first hinge shaft, a second hinge shaft, a third hinge shaft, a fourth hinge shaft, a fifth hinge shaft, and a sixth hinge shaft. The frame assembly includes an L-shaped frame, and the middle and lower parts of the fixed crank are hinged to the L-shaped frame via the second hinge shaft and the first hinge shaft. The central cylinder includes a cylinder body and a piston shaft, and the cylinder body is hinged to the fixed crank via the third hinge shaft. The upper part of the piston shaft is hinged to the movable crank via the fourth hinge shaft, the middle part of the movable crank is hinged to the L-shaped frame via the fifth hinge shaft, and the clamping moving tooth is hinged to the lower part of the movable crank via the sixth hinge shaft. The fixed tooth plate is detachably fixed to the lower part of the L-shaped frame, the fixed tooth plate is directly opposite the clamping moving tooth, and a clamping gap is formed between the clamping moving tooth and the clamping moving tooth. The middle hydraulic cylinder operates, causing the piston shaft to drive the movable crank to operate, so that the clamping moving tooth moves closer to the fixed tooth plate.

[0010] In a preferred embodiment of the first aspect of this utility model, the L-shaped frame is provided with a fixing tooth mounting part, and the fixing tooth plate is detachably fixed to the fixing tooth mounting part.

[0011] In a preferred embodiment of the first aspect of this utility model, the fixing tooth mounting part is provided with a lower mating tooth, and the rear part of the fixing tooth plate is provided with a rear tooth groove corresponding to the lower mating tooth, and the rear tooth groove is fitted to the lower mating tooth.

[0012] In a preferred embodiment of the first aspect of this utility model, the double-crank type clamp for the high-frequency hydraulic vibratory pile driver further includes a locking screw, which passes through the fixing tooth mounting portion and is screwed onto the fixing tooth plate, thereby fixing the fixing tooth plate to the fixing tooth mounting portion.

[0013] In a first aspect of this utility model, as a preferred embodiment, the upper part of the fixed tooth mounting part is provided with a fixed tooth assembly arc along the L-shaped frame.

[0014] In the first aspect of the utility model, as a kind of preferred embodiment, the front part of the fixed tooth plate is equipped with front tooth slot, the rear part of the clamping pile moving tooth is equipped with clamping pile tooth slot.

[0015] In the first aspect of the utility model, as a kind of preferred embodiment, the frame body assembly further includes upper frame body, and the upper frame body is provided with top connecting plate for fixing.

[0016] In the first aspect of the utility model, as a kind of preferred embodiment, the upper frame body is provided with hook along two sides.

[0017] In the first aspect of the utility model, as a kind of preferred embodiment, the upper frame body is provided with side rib plate along two sides.

[0018] In the first aspect of the utility model, as a kind of preferred embodiment, the frame body assembly further includes front end beak assembly, and the front end beak assembly is arranged at the lower part of the upper frame body and located at one side of the clamping pile moving tooth.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] 1、the frame body assembly includes L-shaped frame body, the middle part and the lower part of the fixed crank are hinged to the L-shaped frame body through the second hinged shaft and the first hinged shaft;The middle part oil cylinder includes cylinder body and piston shaft, the cylinder body is hinged to the upper part of the fixed crank through the third hinged shaft, and the end of the piston shaft is hinged to the movable crank through the fourth hinged shaft, the middle part of the movable crank is hinged to the L-shaped frame body through the fifth hinged shaft, and the clamping pile moving tooth is hinged to the lower part of the movable crank through the sixth hinged shaft;The fixed tooth plate can be detachably fixed to the lower part of the L-shaped frame body, the fixed tooth plate is opposite to the clamping pile moving tooth, and the clamping pile moving tooth and the clamping pile moving tooth form a clamping gap;The middle part oil cylinder operates, so that the piston shaft drives the movable crank to operate, and the clamping pile moving tooth is close to the fixed tooth plate.Two cranks are used to support the oil cylinder, and as much stress as possible is converted to two cranks and pin shafts, so that the stress or pressure at the fixed tooth plate is greatly reduced, and cracking during high-intensity work is avoided.

[0021] 2、structure changes, so that the stress condition of the key part of the clamp shell is greatly improved;The shape of the oil cylinder is changed, and the cylinder body is supported by the crank, and is no longer directly associated with the body;

[0022] 3、the stress concentration point of the clamp body is stress offset or reduced, the service life of the clamp is greatly prolonged, customer cost is reduced, and the performance of the product is very satisfactory to the customers. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the perspective view of the utility model.

[0024] Figure 2 is a sectional view of the present application;

[0025] Figure 3 is another perspective view of the present application;

[0026] Figure 4 is still another perspective view of the present application;

[0027] Figure 5 is a partial perspective view of the present application;

[0028] Figure 6 is another partial perspective view of the present application;

[0029] Figure 7 is still another partial perspective view of the present application;

[0030] Figure 8 is yet another partial perspective view of the present application;

[0031] Figure 9 is a structural view of a fixed tooth plate.

[0032] In the figure: 10, frame assembly; 11, L-shaped frame; 111, fixed tooth mounting portion; 1111, lower butt joint tooth; 113, fixed tooth assembly arc portion; 12, upper frame; 121, top connecting plate; 122, hook; 123, side rib plate; 13, lower rib; 14, front end beak assembly; 20, fixed crank; 30, middle oil cylinder; 31, cylinder body; 32, piston shaft; 33, oil cylinder valve block; 40, movable crank; 50, clamping pile moving tooth; 51, clamping pile tooth groove; 60, locking screw; 70, fixed tooth plate; 71, front tooth groove; 72, rear tooth groove; 90, clamping gap; 101, first hinged shaft; 102, second hinged shaft; 103, third hinged shaft; 104, fourth hinged shaft; 105, fifth hinged shaft; 106, sixth hinged shaft. DETAILED DESCRIPTION

[0033] In the following, the utility model will be further described in combination with the drawings and the specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict. Except for the special description, the materials and equipment used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0034] In the description of the application, it needs to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0035] In the description of the application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0036] The terms "first", "second", and the like in the specification and claims of the application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] As Figures 1-9As shown, a double-crank type clamp for high-frequency hydraulic vibration pile hammer includes a frame assembly 10, a fixed crank 20, a middle oil cylinder 30, a movable crank 40, a pile clamping moving tooth 50, a locking screw 60, a fixed tooth plate 70, a first hinged shaft 101, a second hinged shaft 102, a third hinged shaft 103, a fourth hinged shaft 104, a fifth hinged shaft 105, and a sixth hinged shaft 106, the frame assembly 10 includes an L-shaped frame body 11, the middle and lower parts of the fixed crank 20 are hinged to the L-shaped frame body 11 through the second hinged shaft 102 and the first hinged shaft 101, the middle oil cylinder 30 includes a cylinder body 31 and a piston shaft 32, the cylinder body 31 is hinged to the upper part of the fixed crank 20 through the third hinged shaft 103, the end of the piston shaft 32 is hinged to the movable crank 40 through the fourth hinged shaft 104, the middle part of the movable crank 40 is hinged to the L-shaped frame body 11 through the fifth hinged shaft 105, and the pile clamping moving tooth 50 is hinged to the lower part of the movable crank 40 through the sixth hinged shaft 106, the fixed tooth plate 70 is detachably fixed to the lower part of the L-shaped frame body 11, the fixed tooth plate 70 faces the pile clamping moving tooth 50, and a clamping gap 90 is formed between the pile clamping moving tooth 50 and the pile clamping moving tooth 50, the middle oil cylinder 30 operates to drive the piston shaft 32 to operate the movable crank 40, and the pile clamping moving tooth 50 is close to the fixed tooth plate 70. By supporting the oil cylinder by two cranks, as much stress as possible is converted to two cranks and pin shafts, the stress or pressure at the fixed tooth plate 70 is greatly reduced, and cracking during high-intensity work is avoided.

[0038] The application occasion of the utility model lies in: the existing steel sheet pile clamp mouth is prone to cracking at key parts such as fixed tooth sides during corresponding difficult driving and pulling conditions. At present, the power of excavators is getting larger and larger, and the strength requirement of the clamp is getting higher and higher, and the existing products cannot keep up.

[0039] Technical effects:

[0040] 1. The structure is changed, so that the stress condition of the key part of the clamp shell is greatly improved; the oil cylinder shape is changed, and the cylinder is supported by a crank, not directly associated with the body;

[0041] 2. The stress concentration point of the clamp body is offset or reduced, the service life of the clamp is greatly prolonged, the customer cost is reduced, and the customers who have used the product are very satisfied with the performance of the product.

[0042] Specifically, the fixed tooth crank reduces the stress of the stress concentration point at the upper arc of the fixed tooth assembly surface at the key position of the original shell, and even offsets the stress, so that the clamp mouth does not crack during long-time or high-strength work. In the first aspect of the utility model, as a preferred embodiment, the upper part of the fixed tooth mounting portion 111 is provided with a fixed tooth assembly arc portion 113 along the L-shaped frame body 11, which greatly reduces the stress at the fixed tooth assembly arc portion 113. It has been verified in actual construction, and the effect is very significant.

[0043] In the first aspect of the utility model, as a preferred embodiment, the L-shaped frame body 11 is provided with a fixed tooth mounting portion 111, and the fixed tooth plate 70 can be detachably fixed to the fixed tooth mounting portion 111, so that the installation is convenient.

[0044] In the first aspect of the utility model, as a preferred embodiment, the fixed tooth mounting portion 111 is provided with a lower butt joint tooth 1111, and the rear part of the fixed tooth plate 70 is provided with a rear tooth groove 72 corresponding to the lower butt joint tooth 1111. The rear tooth groove 72 is matched and installed on the lower butt joint tooth 1111, which improves the compactness of the installation and avoids shaking.

[0045] In the first aspect of the utility model, as a preferred embodiment, the double-crank type clamp for the high-frequency hydraulic vibration pile hammer further comprises a locking screw 60, the locking screw 60 is screwed through the fixed tooth mounting portion 111 and is connected to the fixed tooth plate 70, so that the fixed tooth plate 70 is fixed to the fixed tooth mounting portion 111, and the compactness of the installation is further improved.

[0046] In the first aspect of the utility model, as a preferred embodiment, the front part of the fixed tooth plate 70 is provided with a front tooth groove 71, and the rear part of the clamp pile moving tooth 50 is provided with a clamp pile tooth groove 51. The frame assembly 10 further comprises an upper frame body 12, and the upper frame body 12 is provided with a top connecting plate 121 for fixation.

[0047] In the first aspect of the utility model, as a preferred embodiment, the upper frame body 12 is provided with a bent hook 122 along the two sides. The upper frame body 12 is provided with a side rib plate 123 along the two sides, which is convenient for operation.

[0048] In the first aspect of the utility model, as a preferred embodiment, the frame assembly 10 further comprises a front end sharp mouth assembly 14, and the front end sharp mouth assembly 14 is arranged at the lower part of the upper frame body 12 and located on one side of the clamp pile moving tooth 50. Specifically, the frame assembly 10 further comprises a lower rib 13, and the lower part of the lower rib 13 is arc-shaped.

[0049] Specifically, the cylinder is provided with an oil cylinder valve block for oil inlet and outlet and control of the opening and closing of the clamp mouth.

[0050] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art on the basis of the present application belong to the scope of protection required by the present application.

Claims

1. A double-crank type clamp for a high-frequency hydraulic vibratory pile driver, characterized in that, The system includes a frame assembly, a fixed crank, a central hydraulic cylinder, a movable crank, a clamping and moving gear, a locking screw, a fixed gear plate, a first hinge shaft, a second hinge shaft, a third hinge shaft, a fourth hinge shaft, a fifth hinge shaft, and a sixth hinge shaft. The frame assembly includes an L-shaped frame, and the middle and lower parts of the fixed crank are hinged to the L-shaped frame via the second hinge shaft and the first hinge shaft. The central cylinder includes a cylinder body and a piston shaft. The cylinder body is hinged to the upper part of the fixed crank via the third hinge shaft. The end of the piston shaft is hinged to the movable crank via the fourth hinge shaft. The middle part of the movable crank is hinged to the L-shaped frame via the fifth hinge shaft. The clamping moving tooth is hinged to the lower part of the movable crank via the sixth hinge shaft. The fixed toothed plate is detachably fixed to the lower part of the L-shaped frame. The fixed toothed plate is directly opposite the clamping tooth, and a clamping gap is formed between the clamping tooth and the clamping tooth. The middle cylinder operates, causing the piston shaft to drive the movable crank to operate, so that the clamping tooth moves closer to the fixed toothed plate.

2. The double-crank type clamp for high-frequency hydraulic vibratory pile driving hammer as described in claim 1, characterized in that: The L-shaped frame is provided with a fixing tooth mounting part, and the fixing tooth plate can be detachably fixed to the fixing tooth mounting part.

3. The double-crank type clamp for high-frequency hydraulic vibratory pile driving hammer as described in claim 2, characterized in that: The fixed tooth mounting part is provided with a lower mating tooth, and the rear part of the fixed tooth plate is provided with a rear tooth groove corresponding to the lower mating tooth, and the rear tooth groove is fitted to the lower mating tooth.

4. The double-crank type clamp for high-frequency hydraulic vibratory pile driving hammer as described in claim 3, characterized in that: The high-frequency hydraulic vibratory pile driver double crank type clamp also includes a locking screw, which passes through the fixing tooth mounting part and is screwed to the fixing tooth plate, so that the fixing tooth plate is fixed to the fixing tooth mounting part.

5. The double-crank type clamp for a high-frequency hydraulic vibratory pile driver as described in claim 2, characterized in that: The upper part of the fixed tooth mounting part is provided with a fixed tooth assembly arc along the L-shaped frame.

6. The double-crank type clamp for high-frequency hydraulic vibratory pile driving hammer as described in claim 1, characterized in that: The front part of the fixed tooth plate is provided with a front tooth groove, and the rear part of the clamping tooth is provided with a clamping tooth groove.

7. The double-crank type clamp for high-frequency hydraulic vibratory pile driver as described in claim 1, characterized in that: The frame assembly also includes an upper frame, which is provided with a top connecting plate for fixing.

8. The double-crank type clamp for a high-frequency hydraulic vibratory pile driver as described in claim 7, characterized in that: The upper frame is provided with hooks on both sides.

9. The double-crank type clamp for a high-frequency hydraulic vibratory pile driver as described in claim 7, characterized in that: The upper frame is provided with side ribs on both sides.

10. The double-crank type clamp for a high-frequency hydraulic vibratory pile driver as described in claim 9, characterized in that: The frame assembly also includes a front-end pointed assembly, which is disposed at the lower part of the upper frame and located on one side of the clamping moving tooth.

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