Separated landing gear and guide rod type diesel pile hammer

Abstract

The separated undercarriage comprises a top cross beam, a guide rod, a cylinder hammer and a piston seat body, the top cross beam and the piston seat body are fixedly installed at the two ends of the guide rod respectively, the cylinder hammer is arranged on the guide rod in a sliding mode, an undercarriage body is movably arranged above the cylinder hammer, and the piston seat body is arranged above the undercarriage body. The lifting body can cross over the top cross beam from the upper part of the cylinder hammer; a swinging hammer lifting swing rod is hinged to the undercarriage body; a hook hammer lever is further hinged to the undercarriage body, one end of the hook hammer lever is a hammer hook part, the other end of the hook hammer lever is an unhooking touch part, and an unhooking check block is arranged at the position opposite to the unhooking touch part of the hook hammer lever. A hammer lifting pull rod is fixedly connected to the hammer lifting swing rod, and a hammer lifting rod reset spring is arranged between the hammer lifting swing rod and the undercarriage body. And an undercarriage guide block is fixedly arranged on the undercarriage body. Automatic unhooking starting of the cylinder hammer can be achieved, the cylinder hammer can be separated from the pile hammer after the pile hammer is hoisted and started, and the pile sliding accident is avoided.

Description

Technical Field

[0001] The present invention relates to a guide rod diesel pile hammer, and more particularly to a detachable pile hammer landing gear capable of lifting and starting the pile hammer. The present invention also relates to a guide rod diesel pile hammer having the pile hammer landing gear. Background Art

[0002] A guide-rod diesel pile hammer primarily consists of a top crossbeam and piston seat fixed to each end of the guide rod, along with a landing gear and cylinder hammer slidably supported on the guide rod. The landing gear's primary function is to facilitate the lifting and installation of the entire hammer and to activate the guide-rod diesel pile hammer. In traditional construction, the landing gear is confined between the top crossbeam and piston seat, sliding up and down along the guide rod. When the hammer is raised, the landing gear, pulled by the winch cable, encounters the top crossbeam, blocking the hammer and lifting it. To activate the hammer, the landing gear descends, hooking the cylinder hammer upward. When the cylinder hammer reaches a certain height, the ground operator pulls a decoupling lever with a rope, separating the hammer hook below the landing gear from the cylinder hammer pin, allowing the cylinder hammer to freely fall, completing the activation of the guide-rod diesel hammer.

[0003] Pile foundation construction often involves complex and variable geological conditions, especially during offshore pile driving, coastal areas, and near rivers and lakes. Geological structures can range from simple structures to multi-thick and multi-thin structures. The resistance encountered by piles penetrating different geological structures varies greatly. When penetrating sandstone and dense soil layers, the pile encounters greater resistance, while when penetrating soft soil layers with high water content, the resistance becomes very small. Therefore, during pile driving, if the pile suddenly enters a soft soil layer from a dense soil layer, the pile may suddenly slide down during hammering, resulting in a pile slip. The massive impact force of the cylinder hammer can cause a severe impact on the landing gear and top crossbeam, which is transmitted to the tower through the landing gear cables. This can damage the pile hammer components and cause the tower to bend or overturn, resulting in serious safety accidents during pile driving. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a detachable landing gear that can not only realize the automatic uncoupling and starting of the cylinder hammer, but also can be separated from the pile hammer after the pile hammer is hoisted and started, thereby avoiding the occurrence of pile slip accidents. The present invention also provides a guide rod type diesel pile hammer with such a detachable landing gear.

[0005] In order to solve the above technical problems, the detachable landing gear of the present invention includes a landing gear body, on which a swingable lifting hammer rocker is hingedly supported; a hook hammer lever is also hingedly supported on the landing gear body, one end of the hook hammer lever is a hammer hook portion, and the other end of the hook hammer lever is a decoupling touch portion, and a decoupling block is provided at a position relative to the decoupling touch portion of the hook hammer lever.

[0006] Furthermore, a hammer pull rod is fixedly connected to the hammer swing rod, and a hammer rod return spring is provided between the hammer swing rod and the landing gear body.

[0007] Furthermore, a landing gear guide block is fixedly provided on the landing gear body; a landing gear lifting pulley is also hinged on the landing gear body; and a hook hammer spring is provided between the hook hammer lever and the landing gear body.

[0008] The guide rod type diesel pile hammer of the present invention includes a top cross beam, a guide rod, a cylinder hammer and a piston seat body, the top cross beam and the piston seat body are respectively fixedly installed on the two ends of the guide rod, and the cylinder hammer is slidably arranged on the guide rod. A landing gear body is movably arranged above the cylinder hammer, and the landing gear body can pass over the top cross beam from above the cylinder hammer; a swingable hammer swing arm is hinged on the landing gear body; a hook hammer lever is also hinged on the landing gear body, one end of the hook hammer lever is a hammer hook part, and the other end of the hook hammer lever is an unhooking touch part, and an unhooking stopper is provided at a position relative to the unhooking touch part of the hook hammer lever.

[0009] Furthermore, the unhooking stopper is fixedly arranged on the top crossbeam, and the unhooking stopper corresponds to the position of the unhooking touch portion of the hook hammer lever, and the hammer hook portion of the hook hammer lever corresponds to the position of the hammer lifting pin shaft on the cylinder hammer.

[0010] Furthermore, the unhooking block is provided with an unhooking inclined surface, and the unhooking touch portion of the hook hammer lever is rotatably mounted with a touch roller, which corresponds to the position of the unhooking inclined surface.

[0011] Furthermore, the lifting hammer swing rod and the lifting hammer pull rod are fixedly connected, and a lifting hammer rod return spring is provided between the lifting hammer swing rod and the landing gear body.

[0012] Furthermore, a landing gear guide block is fixedly provided on the landing gear body; a landing gear lifting pulley is also hinged on the landing gear body; and a hook hammer spring is provided between the hook hammer lever and the landing gear body.

[0013] Furthermore, a pile hammer guide support rod is fixedly installed between the top cross beam and the piston seat body, and a pile hammer guide block is installed on the pile hammer guide support rod; the pile hammer guide block and the landing gear guide block are located on the same straight line.

[0014] Furthermore, the outer side of the pile hammer is covered with a noise reduction cover and / or a noise reduction back plate.

[0015] When the pile hammer is lifted and the pile is driven, the hoisting mechanism is lifted and the pile is driven up, and the hoisting mechanism is lifted and the pile is driven up, so that the pile hammer can be lifted and the pile is driven up, and the pile is driven up and the pile is driven up.

[0016] Since a hook hammer lever is hinged on the lifting body, the hook part of the hook hammer lever can hook the cylinder hammer upward. When the landing gear moves up to the position where the hook hammer lever unhooks and touches the unhooking block, the hook hammer lever is blocked by the unhooking block and forced to swing, so that the hammer hook part of the hook hammer lever swings away from the cylinder hammer pin shaft, and the cylinder hammer falls and sleeves onto the piston of the piston seat body to complete the starting of the pile hammer. This starting process is realized by the power of the winch. There is no need for human power to pull the hammer hook to realize the unhooking operation, which avoids the artificial dry jacking and manual operation of the pile hammer starting and realizes the automatic operation of the cylinder hammer unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Front view of

[0020] Figure 3 yes Figure 2 A top view of

[0021] Figure 4 yes Figure 2 sectional view of

[0022] Figure 5 yes Figure 1 A three-dimensional structural diagram of the center landing gear;

[0023] Figure 6 yes Figure 5 Front view of

[0024] Figure 7 yes Figure 6 Left view of;

[0025] Figure 8 yes Figure 7 A-A section view;

[0026] Figure 9 yes Figure 1 A perspective view of a pile hammer with a noise reduction cover and a noise reduction back plate installed;

[0027] Figure 10 yes Figure 9 A perspective view of the center noise reduction hood and noise reduction back panel.

[0028] In the figure, 1 is the piston seat, 2 is the piston, 3 is the guide rod, 4 is the cylinder hammer, 5 is the hammer pin, 6 is the hook hammer lever, 7 is the touch roller, 8 is the unhooking block, 9 is the unhooking inclined plane, 10 is the top crossbeam, 11 is the hammer lever return spring, 12 is the hammer lever slide, 13 is the hammer swing rod, 14 is the hammer pull rod, 15 is the landing gear lifting pulley, 16 is the landing gear body, 17 is the landing gear guide block, 18 is the hook hammer spring, 19 is the lever swing pin, 20 is the pile hammer guide block, 21 is the pile hammer guide rod, 22 is the fixed end cover, 23 is the swing rod sliding sleeve, 24 is the pull rod core shaft, 25 is the noise reduction back plate, 26 is the noise reduction cover, 27 is the noise reduction cover orifice plate, 28 is the fixed end cover, 29 is the rocker arm sliding sleeve, 30 is the rocker arm sliding sleeve, 31 is the pull rod core shaft, 32 is the noise reduction back plate, 33 is the noise reduction cover orifice plate, 34 is the noise reduction cover orifice plate, 35 is the noise reduction cover orifice plate, 36 is the noise reduction cover orifice plate, 37 is the noise reduction cover orifice plate, 38 is the noise reduction cover orifice plate, 39 is the noise reduction cover orifice plate, 40 is the noise reduction cover orifice plate, 41 is the noise reduction cover orifice plate, 42 is the noise reduction cover orifice plate, 43 is the noise reduction cover orifice plate, 44 is the noise reduction cover orifice plate, 45 is the noise reduction cover orifice plate, 46 is the noise reduction cover orifice plate, 47 is the noise reduction cover orifice plate, 48 is the noise reduction cover orifice plate, 49 is

[0029] —Outer wall panels of noise reduction hood. DETAILED DESCRIPTION

[0030] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The illustrated diesel pile hammer with a guide rod that can be raised and lowered separately comprises a piston base 1, a top crossbeam 10, and guide rods 3. The piston base 1 is fixedly mounted with the lower ends of two parallel guide rods 3, the top crossbeam 10 is fixedly mounted to the upper ends of the two parallel guide rods 3, a cylinder hammer 4 slides on the two guide rods 3, a piston 2 is mounted on the piston base 1, and the cylinder chamber of the cylinder hammer 4 can be sleeved onto the piston 2. The top crossbeam 10 is a U-shaped structure, with pile hammer guide struts 21 fixedly mounted at the two outer ends of the U-shaped top crossbeam 10, the other end of which is fixedly mounted on the piston base 1. Two pairs of pile hammer guide blocks 20 with slide grooves are fixedly mounted on the pile hammer guide struts 21. The slide grooves of the two guide blocks in each pair of pile hammer guide blocks 20 are arranged opposite each other, and the slide grooves of the pile hammer guide blocks 20 are slidably clamped on the slide rails of the pile hammer tower (not shown).

[0031] A landing gear body 16 is movably mounted above the cylinder hammer 4. Two pairs of landing guide blocks 17 with slide slots are fixedly mounted on this body. The slide slots of the two guide blocks in each pair of landing gear guide blocks 17 are arranged in opposing positions. The opposing pile hammer guide blocks 20 and landing gear guide blocks 17 are aligned, allowing them to be slidably mounted on the slide rails of the pile hammer tower.

[0032] like Figure 5 、 Figure 6 and Figure 7 The illustrated detachable landing gear includes a landing gear body 16 welded from steel plates. A landing gear hoist pulley 15 is rotatably supported on the top of the landing gear body 16. A hook hammer lever 6 is swingably supported on the landing gear body 16 via a lever swing pin 19. The hook hammer lever 6 extends toward both ends along the lever swing pin 19. One end of the hook hammer lever 6 is a decoupling contact portion. A contact roller 7 is rotatably mounted on the decoupling contact portion of the hook hammer lever 6 to reduce contact resistance. A decoupling stopper 8 is provided at a corresponding position outside the decoupling contact portion of the hook hammer lever 6. The decoupling stopper 8 is fixedly mounted on the top crossbeam 10 and has a decoupling slope 9. When the decoupling contact portion of the hook hammer lever 6 contacts the decoupling stopper 8, the decoupling slope 9 can smoothly guide the swing of the hook hammer lever 6. The other end of the hook hammer lever 6 is a hammer hook portion. A hook hammer spring 18 is tensioned between the extended arm of the hook hammer lever 6 and the landing gear body 16. The hook hammer spring 18 ensures that the hook hammer lever 6 can reliably hook the hammer lifting pin 5 on the cylinder hammer 4. When the landing gear body 16 moves upward with the landing gear lifting pulley 15 to the unhooking position of the hook hammer lever 6, the unhooking contact portion of the hook hammer lever 6 touches the roller 7 and contacts the unhooking inclined surface 9 of the unhooking block 8. The unhooking block 8 pushes the hook hammer lever 6 to swing, causing the cylinder 4 to unhook and fall, completing the automatic start of the pile hammer.

[0033] A swingable hammer rocker 13 is also hinged on the landing gear body 16. Figure 8As shown, the hammer swing arm 13 is fixedly connected to the hammer pull rod 14 via a swing arm sleeve 23. The hammer swing arm 13 and the hammer pull rod 14, which are fixedly connected, are swingably supported on the hammer lever slide 12 via the swing arm sleeve 23. The hammer lever slide 12 is fixedly mounted on the corresponding rib of the landing gear body 16. A pull rod core shaft 24 is also fixedly mounted within the swing arm sleeve 23. A fixed end cap 22 is also mounted at the end of the swing arm sleeve 23. This fixed end cap 22 is fixedly mounted on the corresponding rib of the landing gear body 16. The swing arm sleeve 23 and the pull rod core shaft 24 can swing relative to the fixed end cap 22. A hammer lever return spring 11 is embedded between the swing arm sleeve 23 and the pull rod core shaft 24. This torsion spring 11 has one end engaged with the swing arm sleeve 23 or the pull rod core shaft 24, and the other end engaged with the fixed end cap. This structure creates a compact spring-reset mechanism; of course, this reset mechanism can also include a reset spring or other structure stretched between the hammer-lifting rocker 13 and the hammer-lifting pull rod 14 and the landing gear body 16. A cable is attached to the outer end of the hammer-lifting pull rod 14. Pulling the cable at the outer end of the hammer-lifting pull rod 14 changes and controls the position of the hammer-lifting rocker 13. When the hammer-lifting rocker 13 is in a horizontal position, it can be blocked by the underside of the pile hammer's top crossbeam 10, lifting the entire pile hammer. When the hammer-lifting rocker 13 is in an inclined or vertical position, it can pass over the pile hammer's top crossbeam 10, separating the landing gear from the pile hammer. During the reciprocating strikes of the pile hammer atop the pile body, the separation of the landing gear from the pile hammer effectively prevents the pile hammer from damaging the pile hammer tower and the pile hammer itself through the landing gear and its pile suspension cable.

[0034] like Figure 9 、 Figure 10 As shown, a noise reduction cover 26 is provided on the front outer side of the pile hammer, and the upper and lower ends of the noise reduction cover 26 are respectively fixedly mounted on the piston seat body 1 and the top crossbeam 10. A noise reduction back plate 25 is also installed on the back side of the pile hammer.

[0035] The noise reduction hood 26 is formed by an inner perforated plate 27, an outer wall plate 28, and two end plates, forming a noise reduction cavity. This cavity is filled with a sound-absorbing and noise-reducing material, typically a vibration-absorbing material such as rock wool or fiberglass. The inner perforated plate 27 is a perforated plate, preferably with a perforation ratio between 25% and 30%, and a perforation diameter of 4mm to 6mm. The cavity of the noise reduction back panel 25 is also filled with sound-absorbing and noise-reducing material. The wall panels of the back panel 25 are also perforated plates, with a perforation ratio between 25% and 30%, and a perforation diameter of 4mm to 6mm.

[0036] While the above examples illustrate preferred embodiments of the present invention, the present invention is not limited thereto. Numerous improvements and variations are possible without violating the basic principles of the present invention. For example, the lifting hammer swing lever 13 can employ a swinging hook structure in addition to a horizontal bar structure. Besides employing a torsion spring or a tension spring to reset the lifting hammer swing lever 13, a cable can also be used to achieve swinging in different directions. The contact roller 7 can also be a pin-shaft sliding sleeve or other corresponding structure. The unhooking block 8 can be fixedly attached to the top crossbeam or fixedly connected to the guide rod or the pile hammer guide support rod. These improvements and variations fall within the scope of protection of the present invention.

Claims

1. A split landing gear, comprising a landing gear body (16), characterized in that: A swingable hammer swing rod (13) is hingedly supported on the landing gear body (16); a hook hammer lever (6) is also hingedly supported on the landing gear body (16), one end of the hook hammer lever (6) is a hammer hook portion, and the other end of the hook hammer lever (6) is a decoupling contact portion, and a decoupling block (8) is arranged at a position relative to the decoupling contact portion of the hook hammer lever (6).

2. The detachable landing gear according to claim 1, characterized in that: A hammer pull rod (14) is fixedly connected to the hammer swing rod (13), and a hammer rod reset spring (11) is provided between the hammer swing rod (13) and the landing gear body (16).

3. The detachable landing gear according to claim 1 or 2, characterized in that: A landing gear guide block (17) is fixedly arranged on the landing gear body (16); a landing gear hoisting pulley (15) is also hinged on the landing gear body (16); and a hook hammer spring (18) is arranged between the hook hammer lever (6) and the landing gear body (16).

4. A guide rod type diesel pile hammer, comprising a top cross beam (10), a guide rod (3), a cylinder hammer (4) and a piston seat (1), wherein the top cross beam (10) and the piston seat (1) are fixedly mounted on both ends of the guide rod (3), and the cylinder hammer (4) is slidably mounted on the guide rod (3), characterized in that: A landing gear body (16) is movably arranged above the cylinder hammer (4), and the landing gear body (16) can pass over the top crossbeam (10) from above the cylinder hammer (4); a swingable hammer swing rod (13) is hingedly supported on the landing gear body (16); a hook hammer lever (6) is also hingedly supported on the landing gear body (16), one end of the hook hammer lever (6) is a hammer hook part, and the other end of the hook hammer lever (6) is a decoupling contact part, and a decoupling stopper (8) is arranged at a position relative to the decoupling contact part of the hook hammer lever (6).

5. The guide rod type diesel pile hammer according to claim 4, characterized in that: The unhooking stopper (8) is fixedly arranged on the top crossbeam (10), and the unhooking stopper (8) corresponds to the position of the unhooking contact part of the hook hammer lever (6), and the hammer hook part of the hook hammer lever (6) corresponds to the position of the hammer lifting pin shaft (5) on the cylinder hammer (4).

6. The guide rod type diesel pile hammer according to claim 4, characterized in that: The unhooking block (8) is provided with an unhooking inclined surface (9), and the unhooking contact portion of the hook hammer lever (6) is rotatably mounted with a touch roller (7), and the touch roller (7) corresponds to the position of the unhooking inclined surface (9).

7. The guide rod type diesel pile hammer according to claim 4, characterized in that: The hammer lifting swing rod (13) and the hammer lifting pull rod (14) are fixedly connected, and a hammer lifting rod reset spring (11) is provided between the hammer lifting swing rod (13) and the landing gear body (16).

8. The guide rod type diesel pile hammer according to claim 4, characterized in that: A landing gear guide block (17) is fixedly arranged on the landing gear body (16); a landing gear hoisting pulley (15) is also hinged on the landing gear body (16); and a hook hammer spring (18) is arranged between the hook hammer lever (6) and the landing gear body (16).

9. The guide rod type diesel pile hammer according to any one of claims 4 to 8, characterized in that: A pile hammer guide rod (21) is fixedly installed between the top cross beam (10) and the piston seat body (1), and a pile hammer guide block (20) is installed on the pile hammer guide rod (21); the pile hammer guide block (20) and the landing gear guide block (17) are located on the same straight line.

10. The guide rod type diesel pile hammer according to claim 9, characterized in that: The outer cover of the pile hammer is provided with a noise reduction cover (26) and / or a noise reduction back plate (25).

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