A hammer body laying device for a percussion hydraulic hammer and a method of use

Abstract

The application discloses a hammer body laying device of an impact hydraulic hammer and a use method, relates to the technical field of hydraulic impact hammers, and comprises a hammer body and a rotating support seat. Symmetrical hammer body lower left lifting lugs and hammer body lower right lifting lugs are arranged on the side walls of the lower part of the hammer body. A compensation bushing is arranged on each of the hammer body lower left lifting lugs and the hammer body lower right lifting lugs. A rotating shaft sleeve is arranged on the outside of the compensation bushing. The compensation bushing and the rotating shaft sleeve correspondingly form a support shaft and a rotating shaft with the hammer body lower left lifting lugs and the hammer body lower right lifting lugs. The support shaft and the rotating shaft are installed, the function of safely laying the hammer body is realized, the inclined pulling operation of the travelling crane is completely eliminated, the travelling crane only provides vertical lifting force in the whole process, the safety accidents caused by the inclined pulling are fundamentally eliminated, and the safety of the hammer body laying process is improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic impact hammer technology, specifically to an impact hydraulic hammer body tilting device and its usage method. Background Technology

[0002] With the development of large-scale infrastructure projects, the tonnage of impact hydraulic hammers is constantly increasing. As the largest component of the hydraulic hammer, the hammer body is also increasing in tonnage, reaching hundreds of tons. The problem that follows is that it is becoming increasingly difficult to lay the hammer body down.

[0003] Traditional hammer-lowering methods rely on a crane to pull the hammer at an angle to the lifting lugs. The movement of the crane and the lowering of the hooks work together to tilt the hammer and eventually lower it. However, the crane bears a horizontal component force during the angled pulling process, which violates its vertical lifting design specifications. This can easily lead to equipment damage or even overturning, posing a serious safety threat to operators. Moreover, the traditional method heavily relies on operator experience and cannot quickly adapt to various specifications of hammers with different lifting lug spacing and sizes, resulting in low equipment utilization.

[0004] Patent document CN115057328B discloses a safe unhooking and rapid recovery device for a dynamic compaction machine and its working method. The above patent ensures the safety of hoisting. When releasing the hammer, the hook is first released from the hammer, and then the power is cut off to release the electromagnetic suction cup from the hammer. This unhooking method can avoid wear on the connecting parts and achieve lossless unhooking.

[0005] The aforementioned patent uses a two-stage winch to hoist the ramming hammer. The first-stage winch employs a clutch mechanism so that the circular iron disc hoisted by the winch can fall synchronously as the ramming hammer descends, enabling rapid retrieval of the ramming hammer. However, it does not have the capability to retrieve large, heavy hammer bodies.

[0006] Therefore, this application proposes a device for safely tilting the hammer body of an impact hydraulic hammer and a method for using it. Summary of the Invention

[0007] The purpose of this invention is to provide a device for lowering the hammer body of an impact hydraulic hammer and a method for using it, so as to solve the technical problem of safety hazards in the process of lowering the hammer body of a hydraulic hammer as mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an impact hydraulic hammer body tilting device, comprising a hammer body and a rotating support base. Symmetrically arranged on the lower sidewall of the hammer body are a left and a right lower lifting lug protruding outwards. A compensation bushing is fitted onto both the left and right lower lifting lugs. The compensation bushing consists of two semicircles with inner holes fitting the curvature of the left and right lower lifting lugs. A rotating bushing is fitted onto the outside of the compensation bushing. The compensation bushing and the rotating bushing, in conjunction with the left and right lower lifting lugs, form a support shaft and a rotating shaft, respectively. The hammer body is located above the rotating support base.

[0009] Preferably, the rotating support base is an independent split structure. The distance between the two rotating support bases is adjusted according to the specifications of the hammer body. The bearing body of the rotating support base is provided with a tilting plate to support the support shaft, a guide plate to guide the rotating shaft to slide down, and a rotation fulcrum to restrict the rotating shaft as the rotation center along the direction of the hammer body. The lower end of the tilting plate is connected to the rotation fulcrum, and the end of the rotation fulcrum away from the tilting plate is connected to the lower end of the guide plate.

[0010] Preferably, the pivot point on the rotating support is designed as a U-shaped groove structure, the opening width of the pivot point is designed to allow the rotating shaft to enter the interior of the U-shaped groove, and the opening depth of the pivot point is designed to limit the displacement of the rotating shaft in the vertical direction.

[0011] Preferably, the upper entrance of the guide ramp on the rotating support is provided with an outwardly expanding flared guide structure, and a detachable anti-detachment baffle is provided on the outside of the opening of the rotating fulcrum.

[0012] Preferably, the working surfaces of the tilting ramp and guide ramp on the rotating support base, as well as the inner surface of the rotation fulcrum, are provided with a wear-resistant buffer layer, which is made of a high molecular polymer.

[0013] Preferably, the rotating support is equipped with a pressure sensor and a position sensor. The pressure sensor and the position sensor acquire the force and position status of the support shaft and the rotating shaft to monitor the hammer body in real time during the placement process.

[0014] Preferably, the upper side wall of the hammer body is provided with outwardly protruding hammer body lifting lugs, which are connected to the lifting lock pins. The lifting lock extends vertically upward and is connected to the external lifting trolley.

[0015] Preferably, the method of use includes the following steps:

[0016] S1. Preparatory work is carried out before the hammer body is laid down;

[0017] S2. Hoist the hammer body above the two rotating support seats and slowly lower it so that the support shaft contacts the tilting plate and the rotating shaft is close to the guide plate.

[0018] S3. Continue to fall slowly. The hammer body tilts with the support shaft as the fulcrum. Under the action of gravity, the hammer body tilts to the right and the right rotation shaft slides down along the guide ramp.

[0019] S4. The hammer continues to fall slowly, and the rotating shaft slides into the U-shaped groove of the rotating fulcrum along the guide plate. Under the action of gravity, the hammer body rotates around the rotating shaft until the hammer body is laid down stably.

[0020] Preferably, S1 specifically comprises:

[0021] S11. Check the status of the crane, lifting lock and the rotating support base, and clean and level the installation area of ​​the rotating support base and the expected laying area of ​​the hammer.

[0022] S12. Based on the dimensions of the lower left and lower right lifting lugs of the hammer body, select suitable compensation bushings, assemble and install the two-piece compensation bushings onto the lower left and lower right lifting lugs of the hammer body and tighten them. Then, fit the rotating shaft sleeve onto the outside of the compensation bushings to complete the construction of the support shaft and the rotating shaft.

[0023] S13. Adjust and fix the relative positions of the two rotating support seats according to the specifications of the hammer body to ensure that the positions of the tilting plate, guide plate and rotating fulcrum correspond to the movement trajectory of the support shaft and the rotating shaft.

[0024] S14. The lifting lock is connected to the lifting lug pin on the hammer body, and the lifting lock is connected to the lifting trolley.

[0025] Preferably, S4 specifically includes:

[0026] S41. The rotating shaft slides along the guide inclined plate into the U-shaped groove of the rotating fulcrum, and the instantaneous rotation center of the hammer body switches from the support shaft to the rotating shaft;

[0027] S42. Continue to fall slowly. Under the action of gravity, the hammer body begins to rotate around the rotation axis. The side of the hammer body closest to the support axis rises upward, causing the support axis to disengage from the tilting plate.

[0028] S43. Continuously control the descent, and let the center of gravity of the hammer fall smoothly along an arc trajectory until the hammer is laid down smoothly. Then, release the connection between the lifting lock and the lifting lug on the hammer to complete the entire laying operation.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. This invention achieves the function of safely lowering the hammer body by installing a support shaft and a rotating shaft, completely eliminating the need for the crane to pull at an angle. The crane only provides vertical lifting force throughout the entire process, fundamentally preventing safety accidents caused by oblique pulling and improving the safety of the hammer body lowering process.

[0031] 2. This invention achieves the function of smoothly laying the hammer down by installing a rotating support base. The kinematic design of the rotating support base, which provides linear guidance and fixed-point rotation, transforms the huge potential energy of the hammer into continuous and controllable friction and rotational motion, avoiding the impact caused by sudden changes in the center of gravity and protecting the equipment and the hammer.

[0032] 3. This invention achieves the function of smoothly laying the hammer down by using a two-stage kinematic design of linear guidance and fixed-point rotation. It transforms the huge potential energy of the hammer into continuous and controllable friction and rotational motion, avoiding the impact caused by sudden changes in the center of gravity and protecting the equipment and the hammer.

[0033] 4. This invention enables convenient modification of the hammer body by installing a compensating bushing and a rotating bushing. The compensating bushing and rotating bushing convert the lifting lug into a support shaft and a rotating shaft, which is simple in structure and does not require modification of the hammer body, thus improving the utilization rate of the equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the hammer body of the present invention laid down;

[0035] Figure 2 This is a schematic diagram of the support shaft and rotation shaft structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the rotating support structure of the present invention;

[0037] Figure 4 This is a schematic diagram of the hammer body structure of the present invention;

[0038] Figure 5 This is a schematic diagram of the hammer body falling according to the present invention;

[0039] Figure 6 This is a schematic diagram of the hammer body tilting according to the present invention;

[0040] Figure 7 This is a schematic diagram of the starting point of the hammer body rotation according to the present invention;

[0041] Figure 8 This is a schematic diagram of the hammer body rotation according to the present invention;

[0042] Figure 9 This is a schematic diagram of the hammer body of the present invention laid flat.

[0043] In the diagram: 1. Hammer body; 2. Rotary support base; 3. Support shaft; 4. Rotary shaft; 5. Upper lifting lug on the hammer body; 6. Lower left lifting lug on the hammer body; 7. Lower right lifting lug on the hammer body; 8. Compensating bushing; 9. Rotary bushing; 10. Tilting ramp; 11. Guide ramp; 12. Rotary fulcrum; 13. Lifting lock. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A hammer body tilting device for an impact hydraulic hammer includes a hammer body 1 and a rotating support base 2. The lower side wall of the hammer body 1 is symmetrically provided with a left lower lifting lug 6 and a right lower lifting lug 7 protruding outwards. Each of the left lower lifting lug 6 and the right lower lifting lug 7 is fitted with a compensation bushing 8. The compensation bushing 8 is composed of two semicircles with inner holes that fit the arc of the left lower lifting lug 6 and the right lower lifting lug 7. A rotating bushing 9 is fitted on the outside of the compensation bushing 8. The compensation bushing 8 and the rotating bushing 9, together with the left lower lifting lug 6 and the right lower lifting lug 7, form a support shaft 3 and a rotating shaft 4 respectively. The hammer body 1 is located above the rotating support base 2.

[0048] The rotating support base 2 is provided with a tilting inclined plate 10 for receiving the support shaft 3, a guide inclined plate 11 for guiding the rotating shaft 4 to slide down, and a rotation fulcrum 12 for restricting the rotating shaft 4 as the rotation center on the bearing body along the direction of the hammer body 1.

[0049] The upper side wall of the hammer body 1 is provided with an outwardly protruding hammer body lifting lug 5. The hammer body lifting lug 5 is connected to the lifting lock 13 pin. The lifting lock 13 extends vertically upward and is connected to the external lifting trolley.

[0050] Furthermore, the tilting device of the present invention includes a hammer body 1 and a pair of rotating support seats 2. The hammer body 1, as the object to be operated, originally has outwardly protruding left and right lower lifting lugs 6 and 7 symmetrically arranged on its lower side wall. In traditional processes, the left and right lower lifting lugs 6 and 7 are only used to assist in lifting and do not have a tilting function. A compensating bushing 8 is fitted on the left and right lower lifting lugs 6 and 7, and a rotating bushing 9 is fitted on the outside of the compensating bushing 8. The compensating bushing 8 adopts a two-piece split design, and its inner curved surface is precision machined to ensure a high degree of fit with the outer arc surface of the left and right lower lifting lugs 6 and 7. The two are fastened together with high-strength bolts, thereby eliminating assembly gaps and realizing smooth force transmission from the lifting lugs to the bushing. The rotating bushing 9, which is tightly set outside the compensating bushing 8, is machined into a smooth cylinder of standard diameter. The compensating bushing 8 and the rotating bushing 9, together with the lower left lifting lug 6 and the lower right lifting lug 7 on the hammer body 1, which are used for hoisting, form the support shaft 3 and the rotating shaft 4, which can interact with the rotating support seat 2 and realize the precise movement trajectory, thus realizing the functional transformation of the lifting lug. The support shaft 3 and the rotating shaft 4 have precise geometric dimensions and good surface characteristics. The hammer body 1 is connected to the crane through the upper hammer body lifting lug 5 and the lifting lock 13, and is suspended as a whole above a pair of rotating support seats 2. The pair of rotating support seats 2 are placed independently on a solid and flat foundation. The bearing body of the rotating support seat 2 is designed with a tilting ramp 10, a guide ramp 11 and a rotating fulcrum 12 in sequence along the falling direction of the hammer body 1.

[0051] The entire device transforms the traditionally dangerous and uncontrollable oblique pulling and lowering process into a smooth movement driven by gravity and precisely guided by a mechanical structure by axializing the lifting lug and supplementing it with a rotating support 2 with a specific geometric profile. This fundamentally eliminates the safety hazards of lowering the heavy hammer body 1 and improves safety and reliability.

[0052] Example 2: Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7An impact hydraulic hammer body tilting device includes a hammer body 1 and a rotating support base 2. The rotating support base 2 is an independent split structure. The distance between the two rotating support bases 2 is adjusted according to the specifications of the hammer body 1. The rotating support base 2 is provided with a tilting inclined plate 10 for supporting the support shaft 3, a guide inclined plate 11 for guiding the rotating shaft 4 to slide down, and a rotating fulcrum 12 for limiting the rotating shaft 4 as the rotation center along the tilting direction of the hammer body 1. The lower end of the tilting inclined plate 10 is connected to the rotating fulcrum 12, and the end of the rotating fulcrum 12 away from the tilting inclined plate 10 is connected to the lower end of the guide inclined plate 11.

[0053] The rotating fulcrum 12 on the rotating support 2 is designed as a U-shaped groove structure. The opening width of the rotating fulcrum 12 is designed to allow the rotating shaft 4 to enter the interior of the U-shaped groove, and the opening depth of the rotating fulcrum 12 is designed to limit the displacement of the rotating shaft 4 in the vertical direction.

[0054] Furthermore, the pair of rotating support seats 2 of the present invention are not a rigid whole, but adopt an independent split structure. This design gives the device extremely high flexibility, so that the center distance between the two rotating support seats 2 can be precisely adjusted according to different models and specifications of hammer bodies 1. Before use, the operator only needs to measure the distance between the lifting lugs of the hammer body 1 to be knocked down, and then move the two rotating support seats 2 to the appropriate position and fix them on the foundation accordingly to quickly complete the adaptation. This allows the same set of knocking device to cover all specifications of hammer bodies 1 in a product series, which greatly improves the utilization rate and economy of the equipment.

[0055] The rotating support 2 includes three continuous functional surfaces: a tilting ramp 10, a guide ramp 11, and a rotating fulcrum 12. The tilting ramp 10 is the first component to contact the support shaft 3. Its surface is an inclined plane with a certain angle. The function of the inclined plane is to convert the vertical downward force applied by the trolley into a torque that causes the hammer 1 to tilt towards the rotating shaft 4, thereby smoothly initiating the tilting process. The guide ramp 11 is located in the extension direction of the tilting ramp 10, but its tilt angle is designed to be larger than that of the tilting ramp 10. This larger tilt angle ensures that the rotating shaft 4 can obtain sufficient... The shaft slides down along the guide ramp 11 to the final pivot point 12. The guide ramp 11 is the key to ensuring that the rotating shaft 4 does not derail and remains under control during complex spatial movements. The pivot point 12 is located at the end of the guide ramp 11 and is designed as a U-shaped groove. The opening width of the U-shaped groove is 10cm larger than the diameter of the rotating shaft 4 to ensure that the rotating shaft 4 can slide in smoothly. The opening depth of the U-shaped groove is the same as the radius of the rotating shaft 4. After the rotating shaft 4 falls in, the U-shaped groove can effectively limit the vertical displacement of the rotating shaft 4, thereby locking the rotating shaft 4 as a reliable rotation center.

[0056] The continuous coordination of these three functional aspects forms a complete action chain from receiving to guiding to locking, which decomposes and restricts the huge potential energy and complex spatial posture changes of the hammer body 1 into a safe mechanical sequence, realizing the proceduralization and standardization of the falling process.

[0057] Example 3: Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 An impact hydraulic hammer body tilting device includes a hammer body 1 and a rotating support 2. The rotating fulcrum 12 on the rotating support 2 is designed as a U-shaped groove structure. The opening width of the rotating fulcrum 12 is designed to allow the rotating shaft 4 to enter the interior of the U-shaped groove. The opening depth of the rotating fulcrum 12 is designed to limit the displacement of the rotating shaft 4 in the vertical direction.

[0058] The upper entrance of the guide ramp 11 on the rotating support 2 is provided with an outwardly expanding horn-shaped guide structure, and the outer side of the opening of the rotating fulcrum 12 is provided with a detachable anti-detachment baffle.

[0059] The working surfaces of the tilting inclined plate 10 and the guide inclined plate 11 on the rotary support 2, as well as the inner surface of the rotation fulcrum 12, are all provided with a wear-resistant buffer layer, which is made of a high molecular polymer.

[0060] Furthermore, the safety enhancement design of the rotating fulcrum 12 in the tilting device of the present invention is a key structure to ensure the stability and safety of the final rotation stage. The rotating fulcrum 12 is the core component of the entire device that bears the final rotation load, and its structural reliability is directly related to the success or failure of the tilting operation. The rotating fulcrum 12 is designed as a U-shaped groove structure with a precise profile. The radius of the arc of the U-shaped groove matches the outer radius of the rotating bushing 9 to form good surface contact, reduce contact stress, and avoid structural crushing. The opening width of the groove is sufficient for the rotating shaft 4 to slide smoothly into the guide plate 11, while avoiding excessive lateral swaying of the rotating shaft 4 in the groove and reducing the risk of dislodgement. The depth of the groove is sufficient to ensure that the rotating shaft 4 can be locked in under the action of gravity after falling in, and will not jump out due to slight disturbances during subsequent rotation.

[0061] To further enhance safety and prevent the rotating shaft 4 from accidentally coming off the rotating fulcrum 12 in extreme cases, a detachable anti-detachment baffle is added to the outside of the opening of the rotating fulcrum 12. The anti-detachment baffle can be installed on the rotating support 2 through quick-connect parts such as pins and bolts. The anti-detachment baffle forms a physical barrier to ensure that the rotating shaft 4 is enclosed in a safe movement space throughout the entire rotation process.

[0062] To address the continuous sliding and rotational friction between the support shaft 3 and the rotating shaft 4 and the various functional surfaces during the tilting process, and to eliminate noise, wear, and impact that may result from direct metal-to-metal contact, a high-performance wear-resistant buffer layer is provided on the working inclined surface of the tilting ramp 10, the guiding inclined surface of the guide ramp 11, and the inner surface of the U-shaped groove of the rotating fulcrum 12. This wear-resistant buffer layer is preferably made of ultra-high molecular weight polyethylene sheet or a wear-resistant hard alloy layer formed by overlay welding. The wear-resistant buffer layer has an extremely low coefficient of friction and extremely high wear resistance, which not only effectively protects the support shaft 3, the rotating shaft 4, and the rotating support seat 2 from wear and extends the service life of the equipment, but its own elastic-plastic deformation can also absorb some of the impact energy, making the entire tilting process more stable and quiet, and further improving the overall performance and reliability of the tilting device.

[0063] Example 4: Please refer to Figure 1 , Figure 6 , Figure 7 and Figure 8 An impact hydraulic hammer body lowering device includes a hammer body 1 and a rotating support 2. The rotating support 2 is equipped with a pressure sensor and a position sensor. The pressure sensor and the position sensor monitor the hammer body 1 in real time during the lowering process by acquiring the force and position status of the support shaft 3 and the rotating shaft 4.

[0064] Furthermore, based on the basic mechanical structure, the tilting device can be equipped with a real-time status monitoring module. High-precision pressure sensors are installed near the tilting ramp 10 and the rotation fulcrum 12. The pressure sensors are integrated under the wear-resistant buffer layer and are used to monitor the initial pressure when the support shaft 3 contacts the tilting ramp 10, as well as the dynamic load generated when the rotation shaft 4 rotates within the rotation fulcrum 12. The pressure data change curve can clearly reflect the transfer of force flow during the tilting process. For example, when the pressure sensor detects a sudden drop in pressure at the support shaft 3 and the pressure at the rotation fulcrum 12 stabilizes, it can automatically determine that the fulcrum has successfully switched from the support shaft 3 to the rotation shaft 4.

[0065] Non-contact position sensors are installed along the guide ramp 11 and inside the rotation fulcrum 12. The position sensors are used to continuously track the precise position and speed of the support shaft 3 and the rotation shaft 4 in space. By monitoring the speed at which the rotation shaft 4 slides down the guide ramp 11, it can be determined whether the descent is uniform and whether there are any abnormalities such as jamming or excessive acceleration. By monitoring the position of the rotation shaft 4 within the rotation fulcrum 12, it can be confirmed whether it is within a safe working range. All analog or digital signals collected by the sensors are transmitted to the central processing unit, which analyzes, processes, and displays the data, presenting the force change curves, motion trajectories, and current status of the support shaft 3 and the rotation shaft 4 in real time. It can also preset safety thresholds. When the monitored pressure or displacement data exceeds the normal range, an audible and visual alarm signal is immediately issued, and a stop command is sent to the crane to stop the descent operation, thereby nipping potential risks in the bud.

[0066] The integration of this intelligent monitoring module provides operators with precise data support, enabling visualization, quantitative management, and safety warnings of the tumbling process. This greatly reduces the risk of human error and lays the foundation for subsequent semi-automatic or even fully automated control of the tumbling process.

[0067] Example 5: Please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A hammer body tilting device for an impact hydraulic hammer includes a hammer body 1 and a rotating support base 2. The lower side wall of the hammer body 1 is symmetrically provided with a left lower lifting lug 6 and a right lower lifting lug 7 protruding outwards. Each of the left lower lifting lug 6 and the right lower lifting lug 7 is fitted with a compensation bushing 8. The compensation bushing 8 is composed of two semicircles with inner holes that fit the arc of the left lower lifting lug 6 and the right lower lifting lug 7. A rotating bushing 9 is fitted on the outside of the compensation bushing 8. The compensation bushing 8 and the rotating bushing 9, together with the left lower lifting lug 6 and the right lower lifting lug 7, form a support shaft 3 and a rotating shaft 4 respectively. The hammer body 1 is located above the rotating support base 2.

[0068] The rotating support 2 is an independent split structure. The spacing between the two rotating support 2 is adjusted according to the specifications of the hammer body 1. The rotating support 2 is provided with a tilting plate 10 for supporting the support shaft 3, a guide plate 11 for guiding the rotating shaft 4 to slide down, and a rotating fulcrum 12 for limiting the rotating shaft 4 as the center of rotation along the direction of the hammer body 1. The lower end of the tilting plate 10 is connected to the rotating fulcrum 12, and the end of the rotating fulcrum 12 away from the tilting plate 10 is connected to the lower end of the guide plate 11.

[0069] The rotating fulcrum 12 on the rotating support 2 is designed as a U-shaped groove structure. The opening width of the rotating fulcrum 12 is designed to allow the rotating shaft 4 to enter the interior of the U-shaped groove, and the opening depth of the rotating fulcrum 12 is designed to limit the displacement of the rotating shaft 4 in the vertical direction.

[0070] The upper side wall of the hammer body 1 is provided with an outwardly protruding hammer body lifting lug 5. The hammer body lifting lug 5 is connected to the lifting lock 13 pin. The lifting lock 13 extends vertically upward and is connected to the external lifting trolley.

[0071] Furthermore, this invention decomposes the lowering action into a continuous process guided by the device, driven by gravity, and precisely coordinated by the crane. First, equipment inspection and site preparation are performed: operators must comprehensively inspect the crane and lifting lock 13 to ensure their rated load meets requirements, verify the structural integrity of the rotating support 2, clean and compact the installation area of ​​the rotating support 2 and the expected lowering area of ​​the hammer 1, ensuring the ground is flat and firm. Then, based on the specific dimensions of the lower left lifting lug 6 and lower right lifting lug 7 of the hammer, a suitable compensation bushing 8 is selected, and the two-piece compensation... The inner hole of the bushing 8 is aligned with the arc surface of the lifting lug and then tightly fastened to the lifting lug, ensuring that there is no loose gap between them. Then, the rotating bushing 9 with a uniform outer diameter is placed on the outside of the compensating bushing 8, completing the functional transformation from the lifting lug to the support shaft 3 and the rotating shaft 4. The position of the rotating support seat 2 is adjusted according to the lifting lug spacing of the hammer body 1 to ensure that the center distance of the rotating support seat 2 matches the lifting lug spacing. It is then firmly fixed with anchor bolts and the anti-detachment baffle is installed. Using the crane and lifting lock 13, the hammer body 1 is vertically lifted off the ground through the lifting lug 5 on the hammer body.

[0072] After preparation, the lowering process begins: the suspended hammer 1 is slowly lowered, and its support shaft 3 first contacts the tilting ramp 10 of one side of the rotating support 2. At the same time, the rotating shaft 4 approaches the guide ramp 11 of the other side of the rotating support 2. As the crane continues to lower, the weight of the hammer 1 causes it to tilt with the support shaft 3 as the instantaneous fulcrum. Under the action of the gravity component, the rotating shaft 4 slides downward along the slope of the guide ramp 11. The sliding process is strictly limited by the guide ramp 11 to ensure the stability of the tilting direction of the hammer 1. When the rotating shaft 4 slides to the end of the guide ramp 11, it accurately falls into the rotating support. Within point 12, the rotation fulcrum 12 restricts the movement of the rotation axis 4 in the vertical direction, making it a fixed rotation center. The movement mode of the hammer body 1 changes from the previous tilting with the support axis 3 as the instantaneous center to pure rotational motion with the rotation axis 4 as the fixed point. The crane continues to lower the hammer body 1, and the hammer body 1 rotates smoothly around the rotation center until it is safely and smoothly laid down to a horizontal state. Finally, the connection between the lifting lock 13 and the lifting lug 5 on the hammer body is released. This method, through the perfect combination of device and process, transforms the high-risk operation of laying down the heavy hammer body 1 into a safe, stable and repeatable standardized process.

[0073] Working principle: The mechanical structure converts the gravitational potential energy of the hammer body 1 into a phased and stable motion. The lower left lifting lug 6 and lower right lifting lug 7 of the hammer body are functionally converted into support shaft 3 and rotating shaft 4 by installing compensation bushing 8 and rotating bushing 9.

[0074] During operation, the hammer body 1 is vertically hoisted by the overhead crane to a pair of adjustable-space rotating support seats 2 and slowly lowered. The support shaft 3 first contacts the tilting ramp 10 on one side to form an initial fulcrum, while the rotating shaft 4 is close to the guide ramp 11 on the other side. As it continues to fall, the hammer body 1, under the action of gravity, begins to tilt towards the rotating shaft 4 with the support shaft 3 as the instantaneous center. The rotating shaft 4 is restricted by the guide ramp 11 and slides down the ramp stably. When the rotating shaft 4 slides into the U-shaped groove of the rotating fulcrum 12, the motion mode undergoes a key change. The rotating shaft 4 becomes a fixed rotation center, and the hammer body 1 then performs a stable arc motion around this center until the support shaft 3 disengages from the tilting ramp 10. The hammer body 1 finally rotates smoothly to a horizontally laid-down state. The entire process is guided by the device, and the overhead crane only provides vertical lifting force, achieving safe laying down without impact or oblique pull.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for lowering the hammer body of an impact hydraulic hammer, characterized in that: The hammer body (1) and the rotating support base (2) are included. The lower side wall of the hammer body (1) is symmetrically provided with a left lower helical lug (6) and a right lower helical lug (7) protruding outward. A compensation bushing (8) is fitted on the left lower helical lug (6) and the right lower helical lug (7). The compensation bushing (8) is composed of two semicircles with inner holes that fit the arc of the left helical lug (6) and the right lower helical lug (7). A rotating bushing (9) is fitted on the outside of the compensation bushing (8). The compensation bushing (8) and the rotating bushing (9) cooperate with the left lower helical lug (6) and the right lower helical lug (7) to form a support shaft (3) and a rotating shaft (4). The hammer body (1) is located above the rotating support base (2). The rotating support base (2) is an independent split structure. The distance between the two rotating support bases (2) is adjusted according to the specifications of the hammer body (1). The rotating support base (2) is provided with a tilting plate (10) to support the support shaft (3), a guide plate (11) to guide the rotating shaft (4) to slide down, and a rotation fulcrum (12) to restrict the rotating shaft (4) as the rotation center along the direction of the hammer body (1). The lower end of the tilting plate (10) is connected to the rotation fulcrum (12), and the end of the rotation fulcrum (12) away from the tilting plate (10) is connected to the lower end of the guide plate (11).

2. The impact hydraulic hammer body tilting device according to claim 1, characterized in that: The rotating fulcrum (12) on the rotating support (2) is designed as a U-shaped groove structure. The opening width of the rotating fulcrum (12) is designed to allow the rotating shaft (4) to enter the interior of the U-shaped groove. The opening depth of the rotating fulcrum (12) is designed to limit the displacement of the rotating shaft (4) in the vertical direction.

3. The impact hydraulic hammer body tilting device according to claim 1, characterized in that: The upper entrance of the guide ramp (11) on the rotating support (2) is provided with an outwardly expanding horn-shaped guide structure, and the outer side of the opening of the rotating fulcrum (12) is provided with a detachable anti-detachment baffle.

4. The impact hydraulic hammer body tilting device according to claim 1, characterized in that: The working surfaces of the tilting ramp (10) and guide ramp (11) on the rotating support (2) and the inner surface of the rotating fulcrum (12) are all provided with wear-resistant buffer layers, which are made of high molecular polymer.

5. The impact hydraulic hammer body tilting device according to claim 1, characterized in that: The rotating support base (2) is equipped with a pressure sensor and a position sensor. The pressure sensor and the position sensor acquire the force and position status of the support shaft (3) and the rotating shaft (4) to monitor the hammer body (1) in real time during the placement process.

6. The impact hydraulic hammer body tilting device according to claim 1, characterized in that: The upper side wall of the hammer body (1) is provided with outward protruding hammer body lifting lugs (5), which are connected to the lifting lock (13) pin. The lifting lock (13) extends vertically upward and is connected to the external lifting trolley.

7. A method of using an impact hydraulic hammer body-tilting device, applicable to the impact hydraulic hammer body-tilting device described in any one of claims 1-6, characterized in that: The method of use includes the following steps: S1. Preparatory work is carried out before the hammer body (1) is laid down; S2. Hoist the hammer body (1) above the two rotating support seats (2) and slowly lower it so that the support shaft (3) contacts the tilting plate (10) and the rotating shaft (4) is close to the guide plate (11). S3. Continue to fall slowly. The hammer body (1) tilts with the support shaft (3) as the fulcrum. Under the action of gravity, the hammer body (1) tilts to the right. The rotating shaft (4) on the right slides down along the guide ramp (11). S4. Continue to fall slowly. The rotating shaft (4) slides into the U-shaped groove of the rotating fulcrum (12) along the guide plate (11). Under the action of gravity, the hammer body (1) rotates around the rotating shaft (4) until the hammer body (1) is laid down smoothly.

8. The method of using the impact hydraulic hammer body tilting device according to claim 7, characterized in that: Specifically, S1 is: S11. Check the status of the lifting crane, lifting lock (13) and the rotating support (2), and clean and level the installation area of ​​the rotating support (2) and the expected laying area of ​​the hammer (1); S12. Based on the dimensions of the lower left lifting lug (6) and the lower right lifting lug (7) of the hammer body, select a suitable compensation bushing (8), install the two-piece compensation bushing (8) on the lower left lifting lug (6) and the lower right lifting lug (7) of the hammer body and tighten it. Then, put the rotating bushing (9) on the outside of the compensation bushing (8) to complete the construction of the support shaft (3) and the rotating shaft (4). S13. Adjust and fix the relative positions of the two rotating support seats (2) according to the specifications of the hammer body (1) to ensure that the positions of the tilting plate (10), the guide plate (11) and the rotating fulcrum (12) correspond to the movement trajectories of the support shaft (3) and the rotating shaft (4); S14. The lifting lock (13) is connected to the lifting lug (5) pin on the hammer body, and the lifting lock (13) is connected to the lifting crane.

9. The method of using the impact hydraulic hammer body tilting device according to claim 7, characterized in that: Specifically, S4 is: S41, the rotating shaft (4) slides into the U-shaped groove of the rotating fulcrum (12) along the guide inclined plate (11), and the instantaneous rotation center of the hammer body (1) switches from the support shaft (3) to the rotating shaft (4). S42. Continue to fall slowly. The hammer body (1) begins to rotate around the rotation axis (4) under the action of gravity. The side of the hammer body (1) close to the support axis (3) is lifted up, so that the support axis (3) is separated from the contact with the tilting plate (10). S43. Continue to control the descent. The center of gravity of the hammer (1) falls smoothly along an arc trajectory until the hammer (1) is laid down smoothly. Then, release the connection between the lifting lock (13) and the lifting lug (5) on the hammer to complete the entire laying operation.

Images