Double crank type clamp for high frequency hydraulic vibration pile hammer

Abstract

The invention discloses a double crank type clamp for a high-frequency hydraulic vibration pile hammer, comprising a frame assembly, a fixed crank, a middle oil cylinder, a movable crank, a pile clamping movable tooth, a locking screw, and a fixed tooth plate. The frame assembly comprises an L-shaped frame, and the middle and lower parts of the fixed crank are hinged to the L-shaped frame through a hinge shaft; the middle oil cylinder comprises a cylinder body and a piston shaft, the cylinder body is hinged to the upper part 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 part of the movable crank is hinged to the L-shaped frame through a hinge shaft, and the pile clamping movable tooth is hinged to the lower part of the movable crank through a hinge shaft; the fixed tooth plate is detachably fixed to the lower part of the L-shaped frame; the middle oil cylinder operates, so that the piston shaft drives the movable crank to operate, so that the pile clamping movable tooth is close to the fixed tooth plate. The oil cylinder is supported by two cranks, and as much stress as possible is converted to the two cranks and the pin shaft, which greatly reduces the stress or pressure at the fixed tooth plate and avoids cracking during high-intensity work.

Description

Technical Field

[0001] The invention relates to a steel sheet pile technology, in particular to a double crank type clamp for a high-frequency hydraulic vibration pile hammer. Background Art

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

[0003] The patent document with application number "CN202022008236.3" discloses a stable pile driver for traffic engineering construction, including two cross frames, a motor, a crank wheel, an upper support plate, a lower support plate, a shock absorbing device and a lifting device, wherein the shock absorbing 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 piling by using a motor in conjunction with a crank wheel, a first connecting rod, a second connecting rod, a third connecting rod, a cross frame, a first slider, a guide rail, a sliding rod and a pile hammer, thereby saving human resources and improving work efficiency. By arranging a hydraulic cylinder and a hydraulic telescopic rod at the bottom of the lower support plate, the height position of the pile hammer can be adjusted to cope with various situations.

[0004] The patent document with application number "CN202020402297.5" discloses a hydraulic drop hammer device for a barrel-type diesel hammer. It includes a barrel-type diesel pile hammer and a landing gear. A cylinder mounting frame is fixedly arranged on the upper part of the outer surface of the lower cylinder of the barrel-type diesel pile hammer. The cylinder mounting frame is connected to the upper part of the cylinder body of the lifting cylinder through a clamp. The front end of the piston rod of the lifting cylinder is hinged to the cylinder upper support through a pin shaft. The cylinder upper support is fixed to the lower part of the landing gear; a release cylinder support is fixedly arranged on the landing gear. The cylinder body of the release cylinder is hinged to the release cylinder support through a pin shaft. The front end of the piston rod of the release cylinder faces the starting crank. The utility model relies on the joint action of the lifting cylinder and the release cylinder to release the upper piston at any height position, thereby performing low-energy piling operations, thereby improving the piling efficiency and safety of the diesel hammer.

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

[0006] 1. The existing steel sheet pile clamps are prone to cracking in key parts such as the fixed tooth side when used in difficult driving and pulling conditions.

[0007] 2. Currently, the power of excavators is getting bigger and bigger, and the requirements for the strength of the clamps are getting higher and higher, and the existing products cannot keep up. Summary of the invention

[0008] In order to overcome the deficiencies of the prior art, the present invention provides a double crank type clamp for a high-frequency hydraulic vibration pile hammer, which solves the problem of easy cracking.

[0009] The first aspect of the present invention is to provide a double crank type clamp for a high-frequency hydraulic vibration pile hammer, comprising a frame assembly, a fixed crank, a middle oil cylinder, a movable crank, a pile clamp moving tooth, a locking screw, a fixed tooth 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 comprises an L-shaped frame, and the middle and lower parts of the fixed crank are hinged to the L-shaped frame through the second hinge shaft and the first hinge shaft; the middle oil cylinder comprises a cylinder body and a piston shaft, and the cylinder body is hinged to the fixed crank through the third hinge shaft. At the upper part, the end of the piston shaft is hinged to the movable crank through the fourth hinge shaft, the middle part of the movable crank is hinged to the L-shaped frame through the fifth hinge shaft, and the pile clamp moving tooth is hinged to the lower part of the movable crank through 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 opposite to the pile clamp moving tooth, and a clamping gap is formed between the pile clamp moving tooth and the pile clamp moving tooth; the operation of the middle oil cylinder causes the piston shaft to drive the movable crank to operate, so that the pile clamp moving tooth approaches the fixed tooth plate.

[0010] In the first aspect of the present invention, as a preferred embodiment, the L-shaped frame body is provided with a fixed tooth mounting portion, and the fixed tooth plate is detachably fixed to the fixed tooth mounting portion.

[0011] In the first aspect of the present invention, as a preferred embodiment, the fixed tooth mounting portion is provided with a lower docking tooth, and the rear portion of the fixed tooth plate is provided with a rear tooth groove corresponding to the lower docking tooth, and the rear tooth groove is mounted in cooperation with the lower docking tooth.

[0012] In the first aspect of the present invention, as a preferred embodiment, the double crank type clamp for the high-frequency hydraulic vibration pile hammer also includes a locking screw, which passes through the fixed tooth mounting portion and is threadedly connected to the fixed tooth plate to fix the fixed tooth plate to the fixed tooth mounting portion.

[0013] In the first aspect of the present invention, as a preferred embodiment, a fixed gear assembly arc is provided on the upper portion of the fixed gear mounting portion along the L-shaped frame body.

[0014] In the first aspect of the present invention, as a preferred embodiment, a front tooth groove is provided at the front of the fixed tooth plate, and a pile clamping tooth groove is provided at the rear of the pile clamping movable tooth.

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

[0016] In the first aspect of the present invention, as a preferred embodiment, the upper frame is provided with hooks along both sides.

[0017] In the first aspect of the present invention, as a preferred embodiment, the upper frame is provided with side ribs along both sides.

[0018] In the first aspect of the present invention, as a preferred embodiment, the frame assembly further includes a front end pointed mouth assembly, and the front end pointed mouth assembly is arranged at the lower part of the upper frame and located on one side of the pile clamping moving teeth.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. 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 through the second hinge shaft and the first hinge shaft; the middle oil cylinder includes a cylinder body and a piston shaft, the cylinder body is hinged to the upper part of the fixed crank through the third hinge shaft, the end of the piston shaft is hinged to the movable crank through the fourth hinge shaft, the middle part of the movable crank is hinged to the L-shaped frame through the fifth hinge shaft, and the pile clamp moving tooth is hinged to the lower part of the movable crank through 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 opposite to the pile clamp moving tooth, and a clamping gap is formed between the pile clamp moving tooth and the pile clamp moving tooth; the operation of the middle oil cylinder causes the piston shaft to drive the movable crank to operate, so that the pile clamp moving tooth approaches the fixed tooth plate. The oil cylinder is supported by two cranks, which transfers as much stress as possible to the two cranks and the pin shaft, greatly reducing the stress or pressure at the fixed gear plate and avoiding cracking during high-intensity work.

[0021] 2. The structural change has greatly improved the stress condition of the key parts of the fixture shell; the shape of the cylinder has changed, and the cylinder body is supported by a crank and is no longer directly related to the body;

[0022] 3. The stress concentration point of the fixture body is offset or reduced, the service life of the fixture is greatly extended, and the customer cost is reduced. Customers who have used it are very satisfied with the performance of this product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 is a cross-sectional view of the present invention;

[0025] Figure 3 is another stereogram of the present invention;

[0026] Figure 4 It is another three-dimensional diagram of the present invention;

[0027] Figure 5 It is a partial stereogram of the present invention;

[0028] Figure 6 Another partial stereogram of the present invention;

[0029] Figure 7 It is another partial stereogram of the present invention;

[0030] Figure 8 It is another partial stereogram of the present invention;

[0031] Fig. 9 This is a structural diagram of the fixed tooth plate.

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

[0033] Below, in conjunction with the accompanying drawings and specific embodiments, the invention is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except as otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] like Figure 1-9As shown, a double crank type clamp for a 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 clamp moving tooth 50, a locking screw 60, a fixed tooth plate 70, a first hinge axis 101, a second hinge axis 102, a third hinge axis 103, a fourth hinge axis 104, a fifth hinge axis 105, and a sixth hinge axis 106. The frame assembly 10 includes an L-shaped frame 11, and the middle and lower parts of the fixed crank 20 are hinged to the L-shaped frame 11 through the second hinge axis 102 and the first hinge axis 101; the middle oil cylinder 30 includes a cylinder body 31 and a piston shaft 32, and the cylinder body 31 is hinged to the fixed crank through the third hinge axis 103 20, the end of the piston shaft 32 is hinged to the movable crank 40 through the fourth hinge shaft 104, the middle of the movable crank 40 is hinged to the L-shaped frame 11 through the fifth hinge shaft 105, and the pile clamping moving tooth 50 is hinged to the lower part of the movable crank 40 through the sixth hinge shaft 106; the fixed tooth plate 70 is detachably fixed to the lower part of the L-shaped frame 11, the fixed tooth plate 70 is directly opposite to 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, so that the piston shaft 32 drives the movable crank 40 to operate, so that the pile clamping moving tooth 50 is close to the fixed tooth plate 70. By supporting the oil cylinder with two cranks, as much stress as possible is converted to the two cranks and the pin shaft, which greatly reduces the stress or pressure at the fixed tooth plate 70 and avoids cracking during high-intensity work.

[0038] The application occasion of the present invention is that the existing steel sheet pile clamps are prone to cracking in key parts of the main body such as the fixed tooth side when corresponding to the working conditions of difficult driving and pulling. At present, the power of excavators is getting bigger and bigger, and the requirements for the strength of the clamps are getting higher and higher, and the existing products cannot keep up.

[0039] Technical effects:

[0040] 1. The structural change has greatly improved the stress condition of the key parts of the fixture shell; the shape of the cylinder has changed, and the cylinder body is supported by a crank and is no longer directly related to the body;

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

[0042] Specifically, the fixed tooth crank can greatly reduce or even offset the stress concentration point at the arc above the fixed tooth assembly surface at the key part of the shell, so as to ensure that the clamp will not crack when the clamp is working for a long time or at high intensity. In the first aspect of the present invention, as a preferred embodiment, the upper part of the fixed tooth mounting portion 111 is provided with a fixed tooth assembly arc 113 along the L-shaped frame 11, which greatly reduces the stress at the fixed tooth assembly arc 113. It has been verified in actual construction sites and the effect is very significant.

[0043] In the first aspect of the present invention, 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 is detachably fixed to the fixed tooth mounting portion 111, which is convenient for installation.

[0044] In the first aspect of the present invention, as a preferred embodiment, the fixed tooth mounting portion 111 is provided with a lower docking tooth 1111, and the rear portion of the fixed tooth plate 70 is provided with a rear tooth groove 72 corresponding to the lower docking tooth 1111, and the rear tooth groove 72 is installed in cooperation with the lower docking tooth 1111, thereby improving the compactness of the installation and avoiding shaking.

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

[0046] In the first aspect of the present invention, as a preferred embodiment, the front portion of the fixed tooth plate 70 is provided with a front tooth groove 71, and the rear portion of the clamping pile moving tooth 50 is provided with a clamping pile tooth groove 51. The frame assembly 10 also includes an upper frame 12, and the upper frame 12 is provided with a top connecting plate 121 for fixing.

[0047] In the first aspect of the present invention, as a preferred embodiment, the upper frame body 12 is provided with hooks 122 along both sides. The upper frame body 12 is provided with side ribs 123 along both sides for easy operation.

[0048] In the first aspect of the present invention, as a preferred embodiment, the frame assembly 10 further includes a front end beak assembly 14, which is disposed at the lower portion of the upper frame 12 and located on one side of the pile clamping moving tooth 50. Specifically, the frame assembly 10 further includes a lower rib 13, and the lower portion of the lower rib 13 is arc-shaped.

[0049] Specifically, the cylinder body is provided with a cylinder valve block for connecting the oil inlet and return of the cylinder and controlling the opening and closing of the clamping nozzle.

[0050] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A double crank type clamp for a high frequency hydraulic vibration pile hammer, characterized in that: It includes a frame assembly, a fixed crank, a middle oil cylinder, a movable crank, a pile clamp moving tooth, a locking screw, a fixed tooth 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. The middle and lower parts of the fixed crank are hinged to the L-shaped frame through the second hinge shaft and the first hinge shaft. The middle oil cylinder comprises a cylinder body and a piston shaft, the cylinder body is hinged to the upper part of the fixed crank through the third hinge shaft, the end of the piston shaft is hinged to the movable crank through the fourth hinge shaft, the middle part of the movable crank is hinged to the L-shaped frame through the fifth hinge shaft, and the pile clamp moving tooth is hinged to the lower part of the movable crank through the sixth hinge shaft; The fixed tooth plate can be detachably fixed to the lower part of the L-shaped frame, and the fixed tooth plate is opposite to the pile clamping moving teeth, and a clamping gap is formed between the pile clamping moving teeth and the pile clamping moving teeth; the middle oil cylinder is operated, so that the piston shaft drives the movable crank to operate, so that the pile clamping moving teeth are close to the fixed tooth plate.

2. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 1, characterized in that: The L-shaped frame is provided with a fixed tooth mounting portion, and the fixed tooth plate is detachably fixed to the fixed tooth mounting portion.

3. The double crank type clamp for high frequency hydraulic vibration pile hammer as claimed in claim 2, characterized in that: The fixed tooth mounting portion is provided with a lower docking tooth, and the rear portion of the fixed tooth plate is provided with a rear tooth groove corresponding to the lower docking tooth, and the rear tooth groove is mounted in cooperation with the lower docking tooth.

4. The double crank type clamp for high frequency hydraulic vibration pile hammer as claimed in claim 3, characterized in that: The double crank type clamp for the high-frequency hydraulic vibration pile hammer also includes a locking screw, which passes through the fixed tooth mounting portion and is screwed to the fixed tooth plate to fix the fixed tooth plate to the fixed tooth mounting portion.

5. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 1, characterized in that: The upper part of the fixed tooth installation part is provided with a fixed tooth assembly arc along the L-shaped frame body.

6. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 1, characterized in that: A front tooth groove is arranged at the front part of the fixed tooth plate, and a pile clamping tooth groove is arranged at the rear part of the pile clamping movable tooth.

7. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 1, characterized in that: The frame assembly also includes an upper frame, and the upper frame is provided with a top connecting plate for fixing.

8. The double crank type clamp for high frequency hydraulic vibration pile hammer as claimed in claim 7, characterized in that: The upper frame body is provided with hooks along two sides.

9. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 7, characterized in that: The upper frame body is provided with side ribs along both sides.

10. The double crank type clamp for high frequency hydraulic vibration pile hammer according to claim 9, characterized in that: The frame assembly also includes a front end pointed mouth assembly, which is arranged at the lower part of the upper frame and located on one side of the pile clamping moving teeth.

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