A linkage guide rod pile hammer device

Abstract

The present invention relates to a linkage guide rod pile hammer device, comprising: a top beam support; a pile cap covered on the top of a pile body; a plurality of pile hammer units: each pile hammer unit comprises a hammer piston seat installed on the pile cap, a guide rod vertically arranged between the pile cap and the top beam support, a cylinder body slidably arranged on the guide rod and cooperating with the hammer piston seat, and a pile hammer body fixedly connected to the cylinder body, the pile hammer bodies of all pile hammer units are fixedly connected to form a whole through an undercarriage; a decoupler connected to the top of the undercarriage and capable of being decoupled and separated therefrom. Compared with the prior art, the pile hammer device of the present invention has a stable and reliable working process, a simple structure, and is easy to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of piling equipment and relates to a linkage guide rod piling hammer device. Background Art

[0002] As a basic piling equipment, a single guide rod diesel pile hammer has been widely used in the construction of bridges, dikes, houses and general construction projects. However, in the construction of some large-scale projects such as cross-sea bridges, due to the large diameter and heavy weight of steel piles, a single guide rod diesel pile hammer cannot operate. The largest existing diesel pile hammer can only generate an impact force of 6000 to 10000 KN. Its disadvantages are: 1. It cannot drive large diameter piles; 2. It cannot drive piles of larger tonnage.

[0003] The linkage guide rod diesel pile hammer disclosed in Chinese patent CN102304921A assembles multiple guide rod pile hammers to overcome the defect of insufficient impact force of a single pile hammer. However, the pile hammer of this patent has a relatively complex structure, is troublesome to operate, and has greater wear and tear during operation. Summary of the invention

[0004] The purpose of the present invention is to provide a linkage guide rod pile hammer device to solve at least one of the problems of the existing pile hammer, such as insufficient impact force, insufficient working stability, and greater working wear.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A linkage guide rod pile hammer device, comprising:

[0007] Top beam support;

[0008] A pile cap is installed on the top of the pile body;

[0009] Several pile hammer units: each pile hammer unit comprises a hammer piston seat mounted on the pile cap, a guide rod vertically arranged between the pile cap and the top beam support, a cylinder body slidably arranged on the guide rod and cooperating with the hammer piston seat, and a pile hammer body fixedly connected to the cylinder body. The pile hammer bodies of all pile hammer units are fixedly connected into a whole through a landing gear;

[0010] A dehooker is connected to the top of the landing gear and can be dehooked and separated therefrom.

[0011] Furthermore, each pile driving hammer unit is provided with an oil supply pipeline connected to the hammer piston seat, and a throttle is arranged on the oil supply pipeline. The pile driving hammer device also includes a throttle synchronization control mechanism, which includes a crank rod, a throttle linkage shaft, and a synchronous drive assembly. The throttle linkage shaft is rotatably arranged next to the throttle of each pile driving hammer, and an eccentric shaft is provided at one end of the throttle linkage shaft. The crank rod is rotatably mounted on the eccentric shaft by a torsion spring. A pressing piece for pressing the throttle is provided on one side of the crank rod close to the throttle, and the other side is processed into an arc shape. The other end of all the throttle linkage shafts is transmission-connected to the synchronous drive assembly to achieve synchronous rotation. In a normal state, the crank rod is located at the working station, and when the throttle linkage shaft rotates, the crank rod moves with the eccentric shaft, so that the crank rod deviates from the working station.

[0012] Furthermore, the synchronous drive assembly includes a synchronous drive unit, a T-type gear box, and a connecting rod with universal couplings at both ends. The T-type gear box is provided with the end of the throttle coupling or the output end of the synchronous drive unit, and the adjacent T-type gear boxes are connected by a connecting rod transmission.

[0013] Furthermore, the pressing member includes a cross bar fixedly connected to the crank rod, and a pressing block arranged on the lower surface of the cross bar, and the shape and size of the cross bar and the pressing block satisfy: when the crank rod rotates toward the throttle direction to the throttle opening position, the pressing block and the throttle are contacted and pressed with the maximum contact area.

[0014] Furthermore, the unhooking device includes an unhooking frame, an unhooking actuator installed on the unhooking frame and movable up and down, and a plurality of groups of barb units located below the unhooking actuator, each group of barb units consisting of two barbs symmetrically arranged on the unhooking frame, the barbs being rotatably arranged on the unhooking frame, the bottom of the barbs also extending laterally to form a hook-shaped protrusion, and the upper part of the barbs also having side walls against an opening groove of the unhooking actuator; when the unhooking actuator moves downward to engage the opening groove, the barbs are locked and the two hook-shaped protrusions are relatively close to each other and hook the pile hammer, and when the unhooking actuator moves upward to disengage from the opening groove, the barbs are unlocked and the two hook-shaped protrusions are relatively far apart to achieve unhooking of the pile hammer.

[0015] Furthermore, the barb, the hook-shaped protrusion and the opening groove are connected as a whole, and the center of gravity of the three is located inside the rotation point of the barb, so that the hook-shaped protrusions of the two barbs are relatively far away from each other in a natural state.

[0016] Furthermore, the top of the hook-shaped protrusion is an outwardly inclined slope, so that when the pile hammer contacts the hook-shaped protrusion in a natural state, the pile hammer exerts a force on the hook-shaped protrusion to open and unhook the two barbs.

[0017] Furthermore, the unhooking actuator includes an unhooking driving member installed on the unhooking frame, and a support member fixedly connected to the output end of the unhooking driving member and driven to move up and down thereby, the support member includes a support plate, and a support guide wheel rotatably installed on the support plate and arranged corresponding to the open groove of the barb, when the support member is driven by the unhooking driving member to move downward, the support guide wheel abuts against the side wall of the open groove, and causes the two hook-shaped protrusions to gradually approach each other.

[0018] Furthermore, the top beam support includes a top cross beam fixedly connected to the top end of the guide rod, and a hanger installed on the top cross beam, and a guardrail is also provided on the outer edge of the hanger.

[0019] Furthermore, a pulley block is also connected to the top of the decoupler, and is connected to an external lifting device through the pulley block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the decoupling device of the present invention;

[0022] Figure 3 It is a schematic diagram of the throttle synchronization control mechanism;

[0023] Figure 4 It is a schematic diagram of the crank rod part in the throttle synchronization control mechanism;

[0024] Description of the markings in the figure:

[0025] 1-top beam support, 11-top cross beam, 12-hanger, 13-guardrail;

[0026] 2-pile cap;

[0027] 3-pile hammer unit, 31-hammer piston seat, 32-guide rod, 33-cylinder body, 34-landing gear;

[0028] 4-unhooking device, 401-unhooking frame, 402-unhooking actuator, 403-barb, 404-hook-shaped protrusion, 405-opening groove, 406-unhooking driving member, 407-support plate, 408-support guide wheel;

[0029] 5-throttle synchronous control mechanism, 501-crank rod, 502-throttle linkage shaft, 503-eccentric shaft, 504-torsion spring, 505-pressing member, 506-throttle, 507-T-type gear box, 508-universal coupling, 509-connecting rod, 510-synchronous drive unit;

[0030] 6-Pulley block. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0032] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0033] In order to provide sufficient pile driving impact force and realize reliable and stable pile driving action, the present invention provides a linkage guide rod pile hammer device, the structure of which is shown in FIG. Figure 1 As shown, including:

[0034] Top beam support 1;

[0035] A pile cap 2 is provided on the top of the pile body;

[0036] A plurality of pile hammer units 3: each pile hammer unit 3 comprises a hammer piston seat 31 mounted on the pile cap 2, a guide rod 32 vertically arranged between the pile cap 2 and the top beam support 1, a cylinder body 33 slidably arranged on the guide rod 32 and cooperating with the hammer piston seat 31, and a pile hammer body fixedly connected to the cylinder body 33. The pile hammer bodies of all pile hammer units 3 are fixedly connected into a whole through a landing gear 34;

[0037] A decoupling device 4 is connected to the top of the landing gear 34 and can be decoupled from the top of the landing gear 34.

[0038] In addition, the pile hammer unit 3 used in the present invention is a conventional structure in the art, and its specific composition and working principle are not described here.

[0039] In some embodiments, see also Figure 3 and Figure 4As shown, each pile hammer unit 3 is also provided with an oil supply pipeline connected to the hammer piston seat 31, and a throttle 506 is arranged on the oil supply pipeline. The pile hammer device also includes a throttle synchronization control mechanism 5, which includes a crank rod 501, a throttle linkage shaft 502, and a synchronous drive component. The throttle linkage shaft 502 is rotatably arranged next to the throttle of each pile hammer, and an eccentric shaft 503 is arranged at one end of the throttle linkage shaft 502. The crank rod 501 is rotatably installed on the eccentric shaft 503 through a torsion spring member 504, and a pressing member 506 for pressing the throttle 506 is provided on the side of the crank rod 501 close to the throttle. 5, and the other side is processed into an arc shape, and the other end of the throttle linkage shaft 502 is transmission-connected with the synchronous drive assembly to realize synchronous rotation; in a normal state, the crank rod 501 is located at the working position. When the pile hammer falls, the arc-shaped side of the crank rod 501 is touched and rotates toward the throttle. When the throttle linkage shaft 502 rotates, the crank rod 501 moves with the eccentric shaft 503, so that the crank rod 501 deviates from the working position. At this time, when the pile hammer falls, it will not touch the crank rod 501, and the crank rod 501 will naturally not rotate toward the throttle direction and press the throttle 506. At this time, the oil supply stops, and the entire piling action also stops.

[0040] For more specific implementations, please refer to Figure 3 As shown, the synchronous drive assembly includes a synchronous drive unit 510, a T-type gearbox 507, and a connecting rod 509 with a universal coupling 508 (i.e., a universal joint shaft) at both ends. The T-type gearbox 507 is provided with the end of the throttle coupling or the output end of the synchronous drive unit 510, and two adjacent T-type gearboxes 507 are connected by a connecting rod 509. The T-type gearbox 507 is used to realize 90° direction change transmission, and it can also be replaced by two transmission shafts that are meshed with bevel gears and perpendicular to each other. In addition, the synchronous drive unit 510 can adopt a hydraulic swing cylinder, etc., or other driving equipment for outputting rotational work.

[0041] For more specific implementations, please refer to Figure 4 As shown, the pressing member 505 includes a cross bar fixedly connected to the crank rod 501, and a pressing block arranged on the lower surface of the cross bar, and the shape and size of the cross bar and the pressing block satisfy: when the crank rod 501 rotates toward the throttle direction to the throttle opening position, the pressing block and the throttle are contacted and pressed with the maximum contact area.

[0042] In some embodiments, see also Figure 2As shown, the decoupler 4 includes a decoupling frame 401, a decoupling actuator 402 installed on the decoupling frame 401 and movable up and down, and a plurality of groups of barb units located below the decoupling actuator 402, each group of barb units consisting of two barbs 403 symmetrically arranged on the decoupling frame 401, the barbs 403 are rotatably arranged on the decoupling frame 401, the bottom of the barbs 403 also extends laterally to form a hook-shaped protrusion 404, and the upper part of the barbs 403 is also provided with a side wall against an opening groove 405 of the decoupling actuator 402; when the decoupling actuator 402 moves downward to engage the opening groove 405, the barbs 403 are locked and the two hook-shaped protrusions 404 are relatively close to and hook the pile hammer, and when the decoupling actuator 402 moves upward to disengage from the opening groove 405, the barbs 403 are unlocked and the two hook-shaped protrusions 404 are relatively far away, thereby realizing the decoupling of the pile hammer. Preferably, several groups of barb units form a rough circle.

[0043] Preferably, the opening slot 405 is L-shaped, and its side wall is inclined outward, so that it is not only convenient to carry out the hooking and unhooking actions, but also can transform the hooking and unhooking actions into a gradual process, that is, in the process of the unhooking actuator 402 contacting the opening slot 405 and gradually moving downward, the two hook-shaped protrusions 404 gradually approach and achieve hooking; and in the process of the unhooking actuator 402 moving upward and disengaging from the opening slot 405, the hook-shaped protrusions 404 gradually move away from each other and open, and finally achieve unhooking. More preferably, the shape of the opening slot 405 satisfies: when the unhooking actuator 402 moves downward and contacts the barb 403, the unhooking actuator 402 is in close contact with the side wall of the opening slot 405.

[0044] For more specific implementations, please refer to Figure 2 As shown, the barb 403, the hook-shaped protrusion 404 and the opening groove 405 are connected as a whole, and the center of gravity of the three is located on the inner side of the rotation point of the barb 403, so that the hook-shaped protrusions 404 of the two barbs 403 are relatively far away from each other in a natural state. The inner side of the rotation point here refers to the opposite side of the two barbs 403, so that the hooking and unhooking can be smoothly realized in coordination with the up and down movement of the unhooking actuator 402.

[0045] For more specific implementations, please refer to Figure 2 As shown, the top of the hook-shaped protrusion 404 is an outwardly inclined slope, so that when the pile hammer contacts the hook-shaped protrusion 404 in a natural state, the pile hammer exerts a force on the hook-shaped protrusion 404 to open and unhook the two barbs 403. In this way, when the unhook actuator 402 is out of contact with the opening groove 405, the hook-shaped protrusion 404 is opened under the weight of the pile hammer itself, thereby realizing automatic unhooking, and unhooking is more labor-saving.

[0046] For more specific implementations, please refer to Figure 2As shown, the unhooking actuator 402 includes an unhooking driving member 406 installed on the unhooking frame 401, and a support member fixedly connected to the output end of the unhooking driving member 406 and driven to move up and down by the unhooking driving member 406. The support member includes a support plate 407, and a support guide wheel 408 rotatably installed on the support plate 407 and arranged corresponding to the opening groove 405 of the barb 403. When the support member is driven by the unhooking driving member 406 to move downward, the support guide wheel 408 abuts against the side wall of the opening groove 405, and the two hook-shaped protrusions 404 gradually approach. The support guide wheel 408 is used to contact the opening groove 405, so that the contact between the two can be changed from traditional sliding friction to rolling friction, thereby improving the smoothness of the support guide wheel 408 being inserted into and separated from the opening groove 405.

[0047] In some embodiments, see also Figure 1 As shown, the top beam support 1 includes a top cross beam 11 fixedly connected to the top end of the guide rod 32 , and a hanger 12 installed on the top cross beam 11 , and a guardrail 13 is also provided on the outer edge of the hanger 12 .

[0048] In some embodiments, see also Figure 1 As shown, the top of the dehooker 4 is also connected with a pulley block 6, and is connected to an external lifting device through the pulley block 6.

[0049] The above embodiments may be implemented individually or in any combination of two or more.

[0050] The above implementation is described in more detail below in conjunction with specific examples.

[0051] Example 1

[0052] In order to provide sufficient pile driving impact force and realize reliable and stable pile driving action, the present invention provides a linkage guide rod pile hammer device, the structure of which is shown in FIG. Figure 1 As shown, including:

[0053] Top beam support 1;

[0054] A pile cap 2 is provided on the top of the pile body;

[0055] A plurality of pile hammer units 3: each pile hammer unit 3 comprises a hammer piston seat 31 mounted on the pile cap 2, a guide rod 32 vertically arranged between the pile cap 2 and the top beam support 1, a cylinder body 33 slidably arranged on the guide rod 32 and cooperating with the hammer piston seat 31, and a pile hammer body fixedly connected to the cylinder body 33. The pile hammer bodies of all pile hammer units 3 are fixedly connected into a whole through a landing gear 34;

[0056] A decoupling device 4 is connected to the top of the landing gear 34 and can be decoupled therefrom.

[0057] In addition, the pile hammer unit 3 used in this embodiment is a conventional structure in the art, and its specific composition and working principle are not described here.

[0058] Please see again Figure 3 and Figure 4 As shown, each pile hammer unit 3 is also provided with an oil supply pipeline connected to the hammer piston seat 31, and a throttle 506 is arranged on the oil supply pipeline. The pile hammer device also includes a throttle synchronization control mechanism 5, which includes a crank rod 501, a throttle linkage shaft 502, and a synchronous drive component. The throttle linkage shaft 502 is rotatably arranged next to the throttle of each pile hammer, and an eccentric shaft 503 is arranged at one end of the throttle linkage shaft 502. The crank rod 501 is rotatably mounted on the eccentric shaft 503 through a torsion spring member 504. A pressing member 505 for pressing the throttle 506 is provided on one side of the crank rod 501 close to the throttle, and an arc-shaped pressing member 506 is processed on the other side. , the other end of all throttle linkage shafts 502 are transmission connected to the synchronous drive assembly and realize synchronous rotation; in a normal state, the crank rod 501 is located at the working position. When the pile hammer falls, the arc-shaped side of the crank rod 501 is touched and rotates toward the throttle until the throttle is pressed to realize oil supply. When the throttle linkage shaft 502 rotates, the crank rod 501 moves with the eccentric shaft rod 503, so that the crank rod 501 deviates from the working position. At this time, when the pile hammer falls, it will not touch the crank rod 501, and the crank rod 501 naturally will not rotate toward the throttle direction and press the throttle 506. At this time, the oil supply stops and the entire piling action also stops.

[0059] Please see again Figure 3 As shown, the synchronous drive assembly includes a synchronous drive unit 510, a T-type gear box 507, and a connecting rod 509 with universal couplings 508 at both ends. The T-type gear box 507 is provided with an end of a throttle coupling or an output end of the synchronous drive unit 510, and two adjacent T-type gear boxes 507 are connected by a connecting rod 509. The T-type gear box 507 is used to realize 90° direction change transmission, and it can also be replaced by two transmission shafts that are meshed with bevel gears and perpendicular to each other. In addition, the synchronous drive unit 510 can adopt a hydraulic swing cylinder, etc., or other driving devices for outputting rotational work.

[0060] Please see again Figure 4As shown, the pressing member 505 includes a cross bar fixedly connected to the crank rod 501, and a pressing block arranged on the lower surface of the cross bar, and the cross bar and the pressing block are shaped and sized to meet the following requirements: when the crank rod 501 rotates toward the throttle direction to the throttle opening position, the pressing block and the throttle are contacted and pressed with the maximum contact area. The throttle linkage shaft 502 and the eccentric shaft 503 are connected as a whole, and the central axes of the two are parallel and do not overlap.

[0061] Please see again Figure 2 As shown, the unhooking device 4 includes an unhooking frame 401, an unhooking actuator 402 installed on the unhooking frame 401 and movable up and down, and a plurality of groups of barb units located below the unhooking actuator 402, each group of barb units consisting of two barbs 403 symmetrically arranged on the unhooking frame 401, the barbs 403 are rotatably arranged on the unhooking frame 401, the bottom of the barbs 403 also extends laterally to form a hook-shaped protrusion 404, and the upper part of the barbs 403 is also provided with a side wall to resist the opening groove 405 of the unhooking actuator 402; when the unhooking actuator 402 moves downward to engage the opening groove 405, the barbs 403 are locked and the two hook-shaped protrusions 404 are relatively close to and hook the pile hammer, and when the unhooking actuator 402 moves upward to disengage from the opening groove 405, the barbs 403 are unlocked and the two hook-shaped protrusions 404 are relatively far away, thereby realizing the unhooking of the pile hammer. Preferably, all the barb units form a roughly circle. In addition, the opening slot 405 is L-shaped, and its side walls are inclined outward, which not only facilitates the hooking and unhooking actions, but also can transform the hooking and unhooking actions into a gradual process, that is, in the process of the unhooking actuator 402 contacting the opening slot 405 and gradually moving downward, the two hook-shaped protrusions 404 gradually approach and achieve hooking; and in the process of the unhooking actuator 402 moving up and disengaging from the opening slot 405, the hook-shaped protrusions 404 gradually move away from each other and open, and finally achieve unhooking. More preferably, the shape of the opening slot 405 satisfies: when the unhooking actuator 402 moves downward and contacts the barb 403, the unhooking actuator 402 is in close contact with the side wall of the opening slot 405.

[0062] Please see again Figure 2 As shown, the barb 403, the hook-shaped protrusion 404 and the opening groove 405 are connected as a whole, and the center of gravity of the three is located on the inner side of the rotation point of the barb 403, so that the hook-shaped protrusions 404 of the two barbs 403 are relatively far away from each other in a natural state. The inner side of the rotation point here refers to the opposite side of the two barbs 403, so that the hooking and unhooking can be smoothly realized in coordination with the up and down movement of the unhooking actuator 402.

[0063] Please see again Figure 2As shown, the top of the hook-shaped protrusion 404 is an outwardly inclined slope, so that when the pile hammer contacts the hook-shaped protrusion 404 in a natural state, the pile hammer exerts a force on the hook-shaped protrusion 404 to open and unhook the two barbs 403. In this way, when the unhook actuator 402 is out of contact with the opening groove 405, the hook-shaped protrusion 404 is opened under the weight of the pile hammer itself, thereby realizing automatic unhooking, and unhooking is also more labor-saving.

[0064] Please see again Figure 2 As shown, the unhooking actuator 402 includes an unhooking driving member 406 mounted on the unhooking frame 401, and a supporting member fixedly connected to the output end of the unhooking driving member 406 and driven to move up and down by the unhooking driving member 406. The supporting member includes a supporting plate 407, and a supporting guide wheel 408 rotatably mounted on the supporting plate 407 and arranged corresponding to the opening groove 405 of the barb 403. When the supporting member is driven by the unhooking driving member 406 to move downward, the supporting guide wheel 408 abuts against the side wall of the opening groove 405, and the two hook-shaped protrusions 404 gradually approach. The supporting guide wheel 408 is used to contact the opening groove 405, so that the contact between the two can be changed from traditional sliding friction to rolling friction, thereby improving the smoothness of the supporting guide wheel 408 being inserted into and separated from the opening groove 405.

[0065] Please see again Figure 1 As shown, the top beam support 1 includes a top cross beam 11 fixedly connected to the top end of the guide rod 32, and a hanger 12 installed on the top cross beam 11, and a guardrail 13 is also provided on the outer edge of the hanger 12.

[0066] Please see again Figure 1 As shown, a pulley block 6 is also connected to the top of the unhooking device 4, and is connected to an external lifting device through the pulley block 6.

[0067] The piling process of the device of the present embodiment is as follows:

[0068] The pile hammer device is placed on the top of the pile driving object through an external hoisting device such as an external winch. At this time, the unhooking device 4 hooks the landing gear 34, and the landing gear 34 and the pile driving hammer body are hoisted to a set height through the pulley block 6. Then, the unhooking actuator 402 moves upward, and the supporting guide wheel 408 is out of contact with the opening groove 405. Under the force of the pile driving hammer itself, the hook-shaped protrusion 404 is stretched open to achieve unhooking, and the pile driving hammer begins to descend and hit the pile cap 2, transferring the impact energy to the pile driving object. At the same time, the pile driving hammer fixedly connected to the pile driving hammer The contact rod also falls synchronously and contacts the crank rod 501, forcing the crank rod 501 to rotate in the direction of the throttle until the pressing member 505 contacts and presses the throttle, so that the oil supply pipeline is connected and oil is supplied. The supplied diesel and other oil products burn and explode in the cylinder. The generated explosive force will cause the cylinder body 33 and the pile hammer body to bounce upward. At this time, the contact rod is disengaged from the crank rod 501, and the crank rod 501 is reset under the action of the torsion spring member 504. The oil supply is interrupted and waits for the next fall of the pile hammer. This cycle is repeated until the piling is completed.

[0069] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A linkage guide rod pile hammer device, characterized in that: include: Top beam support; A pile cap is installed on the top of the pile body; Several pile hammer units: each pile hammer unit comprises a hammer piston seat mounted on the pile cap, a guide rod vertically arranged between the pile cap and the top beam support, a cylinder body slidably arranged on the guide rod and cooperating with the hammer piston seat, and a pile hammer body fixedly connected to the cylinder body. The pile hammer bodies of all pile hammer units are fixedly connected into a whole through a landing gear; A decoupling device connected to the top of the landing gear and capable of being decoupled from the top of the landing gear; An oil supply pipeline connected to the hammer piston seat is also provided next to each pile hammer unit, and a throttle is arranged on the oil supply pipeline. The pile hammer device also includes a throttle synchronization control mechanism, which includes a crank rod, a throttle linkage shaft, and a synchronous drive assembly. The throttle linkage shaft is rotatably arranged next to the throttle of each pile hammer, and an eccentric shaft is provided at one end of the throttle linkage shaft. The crank rod is rotatably mounted on the eccentric shaft by a torsion spring. A pressing piece for pressing the throttle is provided on one side of the crank rod close to the throttle, and the other side is processed into an arc shape. The other end of all throttle linkage shafts is transmission-connected with the synchronous drive assembly and realizes synchronous rotation. Under normal conditions, the crank rod is located at the working station. When the throttle linkage shaft rotates, the crank rod moves with the eccentric shaft, so that the crank rod deviates from the working station. The synchronous drive assembly includes a synchronous drive unit, a T-type gearbox, and a connecting rod with universal couplings at both ends. The T-type gearbox is provided with an end of a throttle coupling or an output end of the synchronous drive unit, and two adjacent T-type gearboxes are connected by a connecting rod transmission. The pressing piece includes a cross bar fixedly connected to the crank rod, and a pressing block arranged on the lower surface of the cross bar, and the shape and size of the cross bar and the pressing block satisfy the following requirements: when the crank rod rotates toward the throttle to the throttle opening position, the pressing block and the throttle are contacted and pressed with the maximum contact area.

2. A linkage guide rod pile hammer device according to claim 1, characterized in that: The unhooking device includes an unhooking frame, an unhooking actuator installed on the unhooking frame and movable up and down, and a plurality of groups of barb units located below the unhooking actuator, each group of barb units consisting of two barbs symmetrically arranged on the unhooking frame, the barbs being rotatably arranged on the unhooking frame, the bottom of the barbs also extending laterally to form hook-shaped protrusions, and the upper part of the barbs also having side walls against the opening groove of the unhooking actuator; when the unhooking actuator moves downward to engage the opening groove, the barbs are locked and the two hook-shaped protrusions are relatively close to each other and hook the pile hammer, and when the unhooking actuator moves upward to disengage from the opening groove, the barbs are unlocked and the two hook-shaped protrusions are relatively far away, thereby achieving unhooking of the pile hammer.

3. A linkage guide rod pile hammer device according to claim 2, characterized in that: The barb, the hook-shaped protrusion and the opening groove are connected as a whole, and the center of gravity of the three is located inside the rotation point of the barb, so that the hook-shaped protrusions of the two barbs are relatively far away from each other in a natural state.

4. A linkage guide rod pile hammer device according to claim 2, characterized in that: The top of the hook-shaped protrusion is an outwardly inclined slope, so that when the pile hammer contacts the hook-shaped protrusion in a natural state, the pile hammer exerts a force on the hook-shaped protrusion to open and unhook the two barbs.

5. A linkage guide rod pile hammer device according to claim 2, characterized in that: The unhooking actuator includes an unhooking driving member installed on the unhooking frame, and a support member fixedly connected to the output end of the unhooking driving member and driven to move up and down by it. The support member includes a support plate, and a support guide wheel rotatably installed on the support plate and arranged corresponding to the open groove of the barb. When the support member is driven by the unhooking driving member to move downward, the support guide wheel abuts against the side wall of the open groove and makes the two hook-shaped protrusions gradually approach each other.

6. A linkage guide rod pile hammer device according to claim 1, characterized in that: The top beam support comprises a top cross beam fixedly connected to the top end of the guide rod, and a hanger installed on the top cross beam, and a guardrail is also arranged on the outer edge of the hanger.

7. A linkage guide rod pile hammer device according to claim 1, characterized in that: The top of the unhooking device is also connected with a pulley block, and is connected to an external lifting device through the pulley block.

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