Crane and its counterweight

Abstract

This invention belongs to the field of cranes and discloses a crane and its counterweight. The crane and its counterweight include: a connecting cover for connecting to the crane hook; and a hammer body located below the connecting cover. The hammer body has a vertical through hole that can be fitted onto the crane's lifting mechanism. The hammer body can automatically engage with the connecting cover under the lifting action of the lifting mechanism. The bottom of the hammer body has a pile pipe receiving groove that can align and cooperate with a pile pipe. The crane includes a counterweight and a lifting mechanism, which is a telescopic rod. The upper end of the lifting mechanism is connected to the connecting cover, and the lower end of the lifting mechanism passes downward through the vertical through hole. The lower end of the lifting mechanism has a lower end limiting block, the diameter of which is larger than the diameter of the vertical through hole. The crane and its counterweight of this invention have a simple structure, are easy to operate, and can realize automatic hooking and pile driving functions.

Description

Technical Field

[0001] This invention relates to the field of crane technology, and more specifically, to a crane and its counterweight. Background Technology

[0002] Tracked cranes are currently essential construction machinery on construction sites. With the increasing sophistication of construction site operations, constraints on construction space, cost control, and economic efficiency, tracked cranes are used in various ways. Adding a hammer to the ground transforms them into dynamic compaction machines; adding a pipe-rolling machine in front, with a grab bucket mounted on the crawler crane's gooseneck, allows both machines to work synchronously for pile driving, or a hydraulic pile driver can be used while the grab bucket grabs soil. When driving a small number of small-diameter pipe piles or shallow foundations using all-tube piles, a pile driver or pipe-rolling machine is needed to drive the pipes into the ground, requiring multiple machines to work together, resulting in high operating costs. Furthermore, most current tracked dynamic compaction machines currently use a hammer that is lifted and then dropped onto the ground to compact the foundation. The key to the hammer in tracked dynamic compaction machines is the automatic release and automatic hooking mechanism. While automatic release technology is relatively mature, automatic hooking technology lacks a simple and practical operating method. Currently, dynamic compaction machines typically require one person to manually hook the hammer, which is unsafe, time-consuming, and wasteful of manpower. Some existing automatic hooking technologies suffer from problems such as complex structure, high cost, and complicated operation. Furthermore, during the descent of the hammer, external factors such as wind can interfere with the hammer's fall to the desired position, reducing efficiency. Summary of the Invention

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, the present invention provides a crane and its counterweight, which has a simple structure, is easy to operate, and can realize automatic hooking and piling functions.

[0004] To achieve the above objectives, a first aspect of the present invention provides a counterweight for a crane, the counterweight comprising:

[0005] Connecting cap, used for attaching to a crane hook; and

[0006] The hammer body is located below the connecting cover. The hammer body has a vertical through hole that can be fitted onto the lifting mechanism of the crane. The hammer body can automatically snap into the connecting cover under the lifting action of the lifting mechanism.

[0007] Optionally, the center of gravity of the hammer body may be located on the vertical axis of the vertical through hole.

[0008] Optionally, the bottom of the hammer body is provided with a pile pipe receiving groove that can be aligned and matched with the pile pipe.

[0009] In some embodiments, the vertical through hole may be fitted with a rubber sleeve.

[0010] Furthermore, the connecting cover may be provided with a latch, and the hammer body is provided with a buckle. The buckle is L-shaped and includes a locking part, a middle hinge part, and a vertical limiting part connected in sequence. The locking part extends inward in the horizontal direction, and the vertical limiting part extends downward in the longitudinal direction. The buckle is hinged to the buckle bracket part of the hammer body through the middle hinge part. The latch can be locked on the bottom surface of the locking part, and the outer side of the vertical limiting part abuts against a first return elastic member.

[0011] Furthermore, the hammer body may also be provided with a limiting post, a second return elastic element, and a pull rope. The upper end of the limiting post abuts against the inner side of the vertical limiting part, and the pull rope and the second return elastic element are disposed at the lower end of the limiting post. The limiting post can move downward under the action of the pull rope to separate from the buckle.

[0012] In addition, the buckle bracket may be provided with a limiting member receiving groove and a pull rope guide groove. The lower end of the limiting post and the second return elastic member are received in the limiting member receiving groove. The pull rope guide groove is provided with a pull rope guide wheel assembly. The pull rope passes through the limiting member receiving groove and the pull rope guide groove and extends downward around the pull rope guide wheel assembly.

[0013] In addition, the outer periphery of the connecting cover extends outward to form a circular brim, which forms the latch, and the hammer body is provided with at least three latches.

[0014] In some embodiments, the lower end of the connecting cover may be provided with a conical mating cavity, and the top end of the hammer body is provided with a conical protrusion that mates with the conical mating cavity;

[0015] And / or, the connecting cover may be provided with a lifting ring and a lifting ring adjusting member, the lifting ring adjusting member and the lifting ring together defining a hanging ring that cooperates with the crane hook, the lifting ring adjusting member being able to adjust the size of the hanging ring.

[0016] A second aspect of the present invention provides a crane comprising the aforementioned counterweight.

[0017] Optionally, the crane may further include a lifting mechanism, which is a telescopic rod mechanism. The upper end of the lifting mechanism is connected to the connecting cover, and the lower end of the lifting mechanism passes downward through the vertical through hole. The lower end of the lifting mechanism is provided with a lower end limiting block, and the diameter of the lower end limiting block is larger than the diameter of the vertical through hole.

[0018] In addition, the outer diameter of the lower limiting block can be less than or equal to the inner diameter of the pile pipe to be constructed.

[0019] In addition, the crane may also include a power unit mounted on the rear counterweight frame of the crane, and the power unit is controlled to be connected to the lifting mechanism via a power unit pipeline.

[0020] Compared to existing technologies, the hammer of this invention comprises a connecting cover and a hammer body, meaning the hammer adopts a split structure. The connecting cover is always fixedly hung on the crane hook, while the hammer body is fitted onto the lifting mechanism through a vertical through hole. This allows the hammer body to move along the lifting mechanism's vertical trajectory within the through hole. When the lifting mechanism raises the hammer body to the connecting cover, the hammer body automatically engages with the connecting cover, achieving automatic hooking of the hammer without manual hooking, making operation safe and convenient. Furthermore, the overall structure of the hammer is simple, resulting in low production and maintenance costs. Moreover, because the hammer body is fitted onto the lifting mechanism through the vertical through hole, it can rise or fall along the lifting mechanism with a stable trajectory, preventing deviation and ensuring accurate landing position, resulting in high automatic hooking efficiency. In addition, due to the accurate landing point of the hammer, the heavy hammer can accurately strike the pile pipe, and the pile driving function can be realized without the need for a pile driver or pipe rolling machine. During pile driving, only the goose head frame's punching grab bucket is needed, and a single crane can complete a complete set of small-diameter pipe pile driving processes. It can be used for multiple purposes and significantly saves the pile driving cost of small-diameter pipe piles.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a crane according to a specific embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a crane according to another specific embodiment of the present invention;

[0025] Figure 3 for Figure 1 A structural diagram of the lifting ring and connecting cover;

[0026] Figure 4 for Figure 1 A schematic diagram of the hammer body in the diagram;

[0027] Figure 5 for Figure 4 A schematic diagram of the buckle structure in the middle;

[0028] Figure 6 for Figure 1 Top view of the hammer body;

[0029] Figure 7 for Figure 1 A schematic diagram of the lifting mechanism in the diagram;

[0030] Figure 8 for Figure 2 A schematic diagram of the hammer body in the diagram;

[0031] Figure 9 for Figure 8 The structural diagram of the hammer and lifting mechanism in the figure; and

[0032] Figure 10 , Figure 11 as well as Figure 12 They are shown respectively Figure 1 The diagram shows the structure of the connecting cover and hammer body in different positions.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Crane hook 2. Lifting ring

[0035] 201 Lifting Ring Adjustment Component 3 Connecting Cover

[0036] 31. Tongue; 32. Conical mating cavity

[0037] 4. Buckle 401 Buckle bracket section

[0038] 402 Intermediate hinge section; 403 Locking section

[0039] 404 Limiting post; 405 Second return elastic element

[0040] 406 Cable guide wheel; 407 Roller

[0041] 408 Limiting component receiving groove; 409 First return elastic component

[0042] 410 Vertical limiting part; 411 Pull rope guide groove

[0043] 5 Hammer body 51 Conical protrusion

[0044] 52 Vertical through hole 53 Pile pipe receiving groove

[0045] 601 Lifting mechanism; 602 Lower limit block

[0046] 7. Pull Rope 701 Main Unlocking Steel Wire Rope

[0047] 702 Unlocking Steel Wire Rope 8 Power Unit

[0048] 9 Power unit pipelines 10 Pipe piles Detailed Implementation

[0049] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0051] In the embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0052] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0053] A first aspect of the present invention provides a counterweight for a crane, and a second aspect of the present invention provides a crane including the counterweight of the present invention. The counterweight of the present invention includes a connecting cover 3 and a hammer body 5. The connecting cover 3 is connected to a crane hook 1, and the hammer body 5 is located below the connecting cover 3. The hammer body 5 has a vertical through hole 52 that can be fitted onto a lifting mechanism 601 of the crane, and the hammer body 5 can automatically engage with the connecting cover 3 under the lifting action of the lifting mechanism 601.

[0054] Specifically, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, the hammer of the present invention includes a connecting cover 3 and a hammer body 5, that is, the hammer adopts a split structure. The connecting cover 3 is located above the hammer body 5 and can be snapped together with the hammer body 5. The connecting cover 3 is always fixedly hung on the crane hook 1. When the connecting cover 3 is snapped together with the hammer body 5, the hammer body 5 is suspended on the crane hook 1; when the connecting cover 3 is detached from the hammer body 5, the hammer body 5 is detached from the crane hook 1 and falls. The hammer body 5 is provided with a vertically extending through hole 52. The lifting mechanism 601 of the crane passes through the vertical through hole 52. When the hammer body 5 falls or when the lifting mechanism 601 drives the hammer body 5 to rise, the hammer body 5 moves along the vertical movement trajectory of the lifting mechanism 601. The movement trajectory is stable and not easy to deviate, which makes the automatic hooking efficiency of the hammer high. Furthermore, when the lifting mechanism 601 raises the hammer 5 to the connecting cover 3, the hammer 5 automatically engages with the connecting cover 3, thus achieving automatic hooking of the hammer without the need for manual hooking, making operation safe and convenient. In addition, the overall structure of the hammer is simple, resulting in low production and maintenance costs. Moreover, due to the accurate landing point of the hammer 5, the hammer can accurately strike the pile pipe 10, achieving the piling function without the need for a piling machine or pipe rolling machine. During piling, only the gooseneck frame's grab bucket is needed, and a single crane can complete the entire piling process (for small-diameter pile pipes with a diameter less than 400mm), enabling multi-purpose use. For small, shallow pipe piles (with a diameter less than 400mm), the crane and hammer of this application can significantly reduce piling (small-diameter) costs.

[0055] It should be noted that the snap-fit ​​connection between the connecting cover 3 and the hammer body 5 can be varied. For example, one of the connecting cover 3 and the hammer body 5 can be provided with a latch 31, and the other of the connecting cover 3 and the hammer body 5 can be provided with a snap fastener 4 that is aligned with the latch 31. When the connecting cover 3 is placed on the hammer body 5, the latch 31 can automatically engage with the snap fastener 4. Furthermore, the structure of the lifting mechanism 601 of the crane can also be varied, such as a multi-stage telescopic rod or a lifting scissor lift. In addition, the connection method between the connecting cover 3 and the crane hook 1 can also be, for example, a ring-hanging connection or a clamping connection, etc., and the present invention is not limited to these.

[0056] Optionally, the center of gravity of the hammer 5 is located on the vertical axis of the vertical through hole 52. This way, when the hammer 5 falls or when the lifting mechanism 601 drives the hammer 5 to rise, the wall of the vertical through hole 52 of the hammer 5 will not interfere with or collide with the lifting mechanism 601, making the movement trajectory of the hammer 5 more stable and reliable, less prone to deviation, and further improving the efficiency and reliability of the automatic hooking of the hammer. In addition, a rubber sleeve can be installed inside the vertical through hole 52 to prevent the hammer 5 from scratching the lifting mechanism 601 during lifting and lowering.

[0057] In existing technologies, the main hook of a crane is usually used to lift the hammer. However, due to the large hook ratio, the lifting and lowering process of the hook is very slow, which greatly restricts the hammer's striking efficiency.

[0058] Therefore, in some embodiments, such as Figure 1 , Figure 2 and Figure 7 As shown, the crane includes a lifting mechanism 601 located below the crane hook 1. The lifting mechanism 601 is an external power unit independent of the crane's main hook mechanism. Using this lifting mechanism 601 to lift the hammer 5, the lifting speed of the hammer 5 is at least 2-3 times that of the hook, significantly improving work efficiency. The lifting mechanism 601 can be a telescopic rod mechanism, with a small length after retraction. The upper end of the lifting mechanism 601 is connected to the connecting cover 3, and the lower end of the lifting mechanism 601 passes downward through a vertical through hole 52. A lower end limiting block 602 is provided at the lower end of the lifting mechanism 601, and the diameter of the lower end limiting block 602 is larger than the diameter of the vertical through hole 52.

[0059] When the hammer 5 needs to be lowered, the lifting mechanism 601 is in an extended state. The upper end of the lifting mechanism 601 is fixed to the connecting cover 3, and the lower end of the lifting mechanism 601 abuts against the ground to be compacted. In this way, the hammer 5 can fall along the lifting mechanism 601 to the target position to compact the foundation during the descent. The lifting mechanism 601 can guide the hammer 5, so that the fall of the hammer 5 is not affected by external factors such as wind, and the landing position is precise, achieving "point-and-click hammering", which greatly improves the work efficiency and safety reliability.

[0060] When the hammer 5 needs to rise, the lower limit block 602 of the lifting mechanism 601 is engaged outside the vertical through hole 52 of the hammer 5, thus the lifting mechanism 601 can lift the hammer 5. When the lifting mechanism 601 retracts, it can drive the hammer 5 to rise to the connecting cover 3 and automatically engage with the connecting cover 3, thereby realizing the automatic hooking of the hammer.

[0061] Furthermore, such as Figure 3 , Figure 4 , Figure 5 , Figure 10 , Figure 11 as well as Figure 12As shown, the connecting cover 3 is provided with a latch 31, and the upper part of the hammer body 5 is provided with a buckle 4 and a buckle support part 401. The buckle 4 is L-shaped and includes a locking part 403, a middle hinge part 402, and a vertical limiting part 410 connected in sequence. The locking part 403 extends inward in the horizontal direction, and the vertical limiting part 410 extends downward in the longitudinal direction. The buckle 4 is hinged to the buckle support part 401 through the middle hinge part 402. A first return elastic member 409 is provided on the outer side of the vertical limiting part 410. The outer end of the first return elastic member 409 abuts against the buckle support part 401, and the inner end of the buckle support part 401 abuts against the outer surface of the vertical limiting part 410. The locking part 403 and the vertical limiting part 410 can rotate around the intermediate hinge part 402. When the connecting cover 3 and the hammer body 5 are in a snap-fit ​​connection state and the locking part 403 is locked in the horizontal position, the latch 31 can be engaged on the bottom surface of the locking part 403. When the connecting cover 3 and the hammer body 5 are in a separated state and the latch 31 continuously presses down on the locking part 403, the first return elastic member 409 is compressed. After the locking part 403 rotates down to a preset position, the latch 31 can pass over the pressing locking part 403 and be located below the pressing locking part 403. The first return elastic member 409 pushes the vertical limiting part 410 to make the locking part 403 return to its original position, thereby enabling the automatic hook function through automatic snap-fit ​​connection.

[0062] Furthermore, the hammer body 5 may also be provided with a movable limiting structure, which can abut against the buckle 4 to limit the buckle 4. When the movable limiting structure abuts against the buckle 4, the latch 31 can be engaged with the buckle 4; and when the movable limiting structure separates from the buckle 4, the latch 31 can disengage from the buckle 4.

[0063] Furthermore, such as Figure 3 , Figure 4 , Figure 5 , Figure 10 , Figure 11 as well as Figure 12 As shown, the movable limiting structure may include a limiting post 404, a second return elastic member 405, and a pull rope 7. The limiting post 404 is disposed inside the vertical limiting part 410, and the pull rope 7 and the second return elastic member 405 are disposed at the lower end of the limiting post 404. When the second return elastic member 405 is in a non-compressed state, the upper end of the limiting post 404 presses against the inner side of the vertical limiting part 410 to limit the vertical limiting part 410, so that the vertical limiting part 410 and the locking part 403 cannot rotate upward, thereby allowing the latch 31 to engage with the bottom surface of the locking part 403 when the locking part 403 is locked in the lateral position. When the pull rope 7 pulls the limiting post 404 downward, the limiting post 404 separates from the vertical limiting part 410 of the buckle 4. At this time, the vertical limiting part 410 and the locking part 403 can rotate upward, and the latch 31 can disengage from the locking part 403, thereby achieving unhooking. The operation is simple and convenient.

[0064] It should be noted that the movable limiting structure can be other structures besides the one described above. For example, the intermediate hinge part 402 can also extend upward to have an upper limit part, with a limiting post located on the outside of the upper limit part. The upper end of the limiting post presses against the outside of the upper limit part, and a pull rope and a return elastic element are located at the lower end of the limiting post. The limiting post can move downward under the action of the pull rope to separate from the upper limit part of the buckle 4.

[0065] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 , Figure 10 , Figure 11 as well as Figure 12 As shown, the movable limiting structure may further include a limiting member receiving groove 408 and a pull rope guide groove 411 disposed on the buckle bracket portion 401. The lower end of the limiting post 404 and the second return elastic member 405 are accommodated in the limiting member receiving groove 408, which is vertically arranged and can limit the limiting post 404 and the second return elastic member 405. The upper end of the second return elastic member 405 abuts against the bottom end of the limiting post 404, and the lower end of the second return elastic member 405 presses against the bottom of the limiting member receiving groove 408. The pull rope guide groove 411 is horizontally arranged and located below the limiting member receiving groove 408. The upper end of the pull rope 7 is connected to the bottom end of the limiting post 404, and the lower end of the pull rope 7 passes through the limiting member receiving groove 408 and extends downward through the pull rope guide groove 411. The pull rope guide groove 411 is provided with a pull rope guide wheel assembly, which includes a pull rope guide wheel 406 and a roller 407. The pull rope guide wheel 406 is located below the limiting member receiving groove 408, and the roller 407 is located at the outer outlet position of the pull rope guide groove 411. The pull rope 7 is wound around the pull rope guide wheel 406 and the roller 407 in sequence and then extends downward.

[0066] Optionally, the outer periphery of the connecting cover 3 extends outward to form a circular brim, which can be formed as a latch 31. The hammer body 5 has at least three latches 4. In this way, the latch 31 of the connecting cover 3 can be connected to the latches 4 at any position in the circumference, making it more convenient to use and the latch connection more reasonable and reliable. Figure 3 and Figure 6As shown, the outer periphery of the connecting cover 3 is circular, and the outer periphery forms a latch 31. Four latches 4 are evenly spaced along the circumference of the hammer body 5. The top surface of the latch 31 is parallel to the horizontal plane, and the bottom surface of the latch 31 faces downwards and is inclined inwards. The pull rope 7 includes a main unlocking wire rope 701 and multiple unlocking wire ropes 702. One end of each unlocking wire rope 702 is connected to the main unlocking wire rope 701. The other ends of each unlocking wire rope 702 are respectively connected to multiple limiting posts 404. The main unlocking wire rope 701 extends downwards. When the main unlocking wire rope 701 is pulled, the multiple unlocking wire ropes 702 simultaneously pull the multiple limiting posts 404, thereby enabling the simultaneous unlocking of multiple latches 4.

[0067] In addition, such as Figure 3 and Figure 4 As shown, the lower end of the connecting cover 3 may be provided with a conical mating cavity 32, and the top end of the hammer body 5 is provided with a conical protrusion 51 that mates with the conical mating cavity 32. In this way, when the connecting cover 3 and the hammer body 5 automatically hook together, a quick and accurate docking can be achieved.

[0068] In addition, such as Figure 3 As shown, the connecting cover 3 may be provided with a lifting ring 2 and a lifting ring adjusting component 201. The lifting ring adjusting component 201 and the lifting ring 2 together define the hanging ring ring that cooperates with the crane hook 1. The lifting ring adjusting component 201 can adjust the size of the hanging ring ring, thereby adjusting the gap between the crane hook 1 and the lifting ring 2, making the connection between the crane hook 1 and the lifting ring 2 more stable and reliable.

[0069] In some embodiments, the crane may be equipped with multiple hammers 5, and the bottom of some hammers 5 may be provided with pile pipe receiving grooves 53 that can align and cooperate with the pile pipe for pile driving. Figure 8 As shown, the pile pipe receiving groove 53 is annular and arranged concentrically with the vertical through hole 52. The circumferential cross section of the pile pipe receiving groove 53 is flared downward, so that the hammer body 5 can be accurately fitted onto the end of the pile pipe 10 when driving the pile.

[0070] Optionally, such as Figure 9 As shown, the outer diameter of the lower limiting block 602 can be less than or equal to the inner diameter of the pipe pile 10 to be constructed. In this way, the lower limiting block 602 can be inserted into the pipe pile 10, and when the hammer 5 falls, it can fall along the lifting mechanism 601 onto the pipe pile 10 to achieve precise pile driving.

[0071] In addition, such as Figure 1 and Figure 2 As shown, the crane may also include a power unit 8 mounted on the rear counterweight frame of the crane, and the power unit 8 is controlled to be connected to the lifting mechanism 601 via a power unit pipeline 9.

[0072] Specifically, when the crane is used as a dynamic compaction machine: the hammer body 5 is a hammer body 5 without the pile pipe receiving groove 53, such as... Figure 4 As shown, the hammer body 5 is relatively high. The crane hook 1 is rigidly connected to the lifting ring 2, which is hung on the crane hook 1. The lifting ring adjusting component 201 is adjusted according to the size of the crane hook 1 to minimize the vertical movement of the crane hook 1. The lifting ring 2 is rigidly connected to the connecting cover 3, which has a conical mating cavity 32 for easy connection with the conical protrusion 51 of the hammer body 5. The lifting mechanism 601 is rigidly connected to the connecting cover 3. The lifting mechanism 601 is connected to the power unit 8 through the power unit pipeline 9. The power unit 8 is suspended on the rear counterweight frame and can be installed when needed and removed when not needed.

[0073] Preparation for automatically connecting the hammer body 5: First, lower the crane hook 1, connect the lifting ring 2 and the connecting cover 3, and simultaneously connect the lifting mechanism 601 to the connecting cover 3. Lift the connecting cover 3 and the lifting mechanism 601, align the lower end of the lifting mechanism 601 with the vertical through hole 52, and lower the crane hook 1, causing the lifting mechanism 601 to retract into the vertical through hole 52. Slowly lower the connecting cover 3, allowing it and the crane hook 1 to fall onto the conical protrusion 51 of the hammer body 5 under their own weight. The conical protrusion 51 and the conical mating cavity 32 of the connecting cover 3 are aligned, and the connecting cover 3 touches the locking part 403 of the buckle 4. Figure 10 As shown, the vertical limiting part 410 is held in place by a first return elastic element 409 due to the weight of the connecting cover 3 and the crane hook 1. When the locking part 403 is pressed down, it is pressed down as well. When the latch 31 of the connecting cover 3 presses down to the over-locking part 403, as shown... Figure 11 As shown, because the first return elastic member 409 presses forward against the vertical limiting part 410, it is kept in the position as shown. Figure 12 The state shown. At this point, hammer body 5 has been automatically connected.

[0074] Automatic Hammer Drop: After preparation, the crane hook 1 lifts the hammer to a height of approximately 1 meter. Simultaneously, while raising the crane hook 1, the lifting mechanism 601 extends, ensuring that the lower limit block 602 of the lifting mechanism 601 remains on the ground. When the hammer reaches the designated height, the initial hammer lift is complete. At this point, the main unlocking wire rope 701 is pulled. The main unlocking wire rope 701 is connected to the unlocking wire rope 702, and both unlocking wire ropes are connected to the limit posts 404 of the four clips 4. The wire ropes pass through the wire rope pulleys 406 and rollers 407, making the pulling very smooth. Pulling the main unlocking wire rope 701 causes the four limit posts 404 of the clips 4 to move downwards simultaneously. At this point, the vertical limit part 410 is not blocked by the limit posts 404, and the hammer body 5 falls under its own weight. Figure 1As shown, during the descent of the hammer 5, it falls along the lifting mechanism 601 to the required position to compact the foundation. After the hammer 5 falls, the main unlocking wire rope 701 is pulled to prevent the limiting post 404 from blocking the vertical limiting part 410. After the vertical limiting part 410 returns to its original position under its own weight, the wire rope is released, causing the second return elastic element 405 to press the limiting post 404 to its highest position. At this time, the power unit 8 is operated to retract the lifting mechanism 601. The retraction mechanism 601 raises the hammer 5 until it touches the connecting cover 3. Figure 10 , Figure 11 as well as Figure 12 As shown, the automatic hook is activated. Once the counterweight is connected, the lifting mechanism 601 extends immediately until the lower limit block 602 reaches the ground. The steel wire rope 701 is then pulled, causing the counterweight to fall. This process is repeated alternately to strike the foundation.

[0075] When the crane is used as a pile driver: When the hammer is used as a pile driver, the hooking and unhooking actions of the hammer are the same as those of the heavy compaction machine. In this case, hammer body 5 is selected. Figure 8 The hammer body 5 shown has a pile pipe receiving groove 53 at its bottom, the size of which can be adjusted according to the diameter of the pile pipe. The outer diameter of the lower limiting block 602 is less than or equal to the inner diameter of the pipe pile 10. Before the hammer body 5 falls, the lower limiting block 602 extends into the cavity of the pipe pile 10. During the pile driving process, because the lower limiting block 602 of the lifting mechanism 601 is fixed in the pipe, the hammer body 5 can fall more effectively onto the pipe pile 10. The weight of the hammer body 5 can be selected according to the size of the pipe pile 40 and the actual construction conditions. Then, in conjunction with the gooseneck frame's grab bucket mechanism to remove the soil inside the pipe, one crane can perform the work of two machines, greatly reducing operating costs.

[0076] In summary, the crane and its hammer of this application, through the design of a novel connecting cover structure, can be used as both a dynamic compaction machine and a pile driver, achieving dual functionality. By installing a lifting mechanism 601 on the connecting cover 3, the lifting mechanism 601 serves two purposes: guiding the hammer during its lowering process, ensuring the hammer falls within a designated range and improving work efficiency; and lifting the hammer, ensuring its lifting speed is at least 2-3 times that of the hook, significantly enhancing work efficiency. Furthermore, the shape of the connecting cover 3 matches the shape of the hammer body 5, and the automatic hooking and unhooking mechanism further improves work efficiency.

[0077] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0078] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0082] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A counterweight for a crane, characterized in that, The weight includes: Connecting cover (3) for connection with crane hook (1); and The hammer body (5) is located below the connecting cover (3). The hammer body (5) has a vertical through hole (52) that can be fitted onto the lifting mechanism of the crane. The hammer body (5) can be snapped together with the connecting cover (3) under the lifting action of the lifting mechanism.

2. The counterweight for a crane according to claim 1, characterized in that, The center of gravity of the hammer (5) is located on the vertical axis of the vertical through hole (52).

3. The counterweight for a crane according to claim 1, characterized in that, The bottom of the hammer (5) is provided with a pile pipe receiving groove (53) that can be aligned and matched with the pile pipe.

4. The counterweight for a crane according to any one of claims 1 to 3, characterized in that, The connecting cover (3) is provided with a latch (31), and the hammer body (5) is provided with a buckle (4) and a buckle support part (401). The buckle (4) is L-shaped and includes a locking part (403), a middle hinge part (402) and a vertical limiting part (410) connected in sequence. The locking part (403) extends inward in the horizontal direction, and the vertical limiting part (410) extends downward in the longitudinal direction. The buckle (4) is hinged to the buckle support part (401) through the middle hinge part (402). The latch (31) can be locked on the bottom surface of the locking part (403). The outer side of the vertical limiting part (410) abuts against a first return elastic member (409).

5. The counterweight for a crane according to claim 4, characterized in that, The hammer body (5) is also provided with a limiting post (404), a second return elastic element (405) and a pull rope (7). The upper end of the limiting post (404) abuts against the inner side of the vertical limiting part (410). The pull rope (7) and the second return elastic element (405) are arranged at the lower end of the limiting post (404). The limiting post (404) can move downward under the action of the pull rope (7) to separate from the buckle (4).

6. The counterweight for a crane according to claim 5, characterized in that, The buckle bracket part (401) is provided with a limiting member receiving groove (408) and a pull rope guide groove (411). The lower end of the limiting post (404) and the second return elastic member (405) are housed in the limiting member receiving groove (408). The pull rope guide groove (411) is provided with a pull rope guide wheel assembly. The pull rope (7) passes through the limiting member receiving groove (408) and the pull rope guide groove (411) and extends downward around the pull rope guide wheel assembly.

7. The counterweight for a crane according to claim 4, characterized in that, The outer periphery of the connecting cover (3) extends outward to form a circular brim, the brim being formed as the latch (31), and the hammer body (5) is provided with at least three latches (4).

8. The counterweight for a crane according to claim 1, characterized in that, The lower end of the connecting cover (3) is provided with a conical mating cavity (32), and the top end of the hammer body (5) is provided with a conical protrusion (51) that mates with the conical mating cavity (32). And / or, the connecting cover (3) is provided with a lifting ring (2) and a lifting ring adjusting member (201), the lifting ring adjusting member (201) and the lifting ring (2) together define a hanging ring that cooperates with the crane hook (1), the lifting ring adjusting member (201) can adjust the size of the hanging ring; And / or, a rubber sleeve is provided inside the vertical through hole (52).

9. A crane, characterized in that, The crane includes a weight according to any one of claims 1 to 8.

10. The crane according to claim 9, characterized in that, The crane also includes a lifting mechanism (601), which is a telescopic rod mechanism. The upper end of the lifting mechanism (601) is connected to the connecting cover (3), and the lower end of the lifting mechanism (601) passes downward through the vertical through hole (52). The lower end of the lifting mechanism (601) is provided with a lower end limiting block (602), and the diameter of the lower end limiting block (602) is larger than the diameter of the vertical through hole (52).

11. The crane according to claim 10, characterized in that, The outer diameter of the lower limiting block (602) is less than or equal to the inner diameter of the pipe pile (10) to be constructed.

12. The crane according to claim 10, characterized in that, The crane also includes a power unit (8) mounted on the rear counterweight frame of the crane, and the power unit (8) is controlled to be connected to the lifting mechanism (601) via a power unit pipeline (9).

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