A detachable hammer core

Abstract

The utility model discloses a detachable hammer core belonging to hydraulic pile hammer technical field, including lifting hammer mechanism, hammer core, counterweight subassembly, and counterweight subassembly is detachably connected with hammer core, its characterized in that: the one end of hammer core is equipped with connecting cavity, and the axial through -going of counterweight subassembly is equipped with connecting through -hole, and lifting hammer mechanism is set up in the connecting cavity through connecting through -hole, and hammer core is detachably connected with lifting hammer mechanism, and when the operation of lifting hammer mechanism directly drives hammer core reciprocating movement, and counterweight subassembly is set up in the outer periphery of lifting hammer mechanism through connecting through -hole and does not increase the overall height of hammer core, and it is convenient for replacing different quantity or thickness of counterweight block according to the construction need, avoid the problem that the hammer body is too long and is limited by the lifting height of pile frame due to the stacking of counterweight block, thereby improve the adaptability and construction flexibility of the pile hammer with the detachable hammer core to different length piles.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pile driving hammer technology, specifically to a detachable hammer core. Background Technology

[0002] During pile driving, the pile hammer uses the impact energy of the hammer core to overcome the resistance of the foundation soil to the pile, thereby driving the hammer core to move along the hammer body and drive the pile to the predetermined depth.

[0003] Chinese utility model patent publication number "CN222648767U" discloses a hammer core assembly structure, including a hammer core and an increment block disposed between the inner cavities of an upper cylinder and a lower cylinder. The increment block is characterized by having a first groove and a second groove respectively formed at its bottom, with one side of the second groove being open. A movable groove is formed on the increment block, communicating with both the first and second grooves. A fixing mechanism is provided between the hammer core and the increment block, comprising a rod, a column, and a ring. The column is inserted into the first groove, and the rod is inserted into a hole using a beveled block, thereby fixing the column and the increment block.

[0004] However, according to its instruction manual, the incremental block consists of multiple upper hammer blocks arranged vertically and a lower hammer block located at the bottom. The upper hammer blocks are detachably connected. When there are many upper hammer blocks, the overall height of the hammer body will be increased. When connected to the hammer lifting mechanism, due to the limited lifting height of the pile frame, the longer hammer body cannot be used to construct longer piles.

[0005] Therefore, it is necessary to improve upon the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a detachable hammer core installed inside a pile driving hammer, thereby improving the applicability of the pile driving hammer to piles of various lengths and solving the above-mentioned problems existing in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a detachable hammer core, including a hammer lifting mechanism, a hammer core, and a counterweight assembly, wherein the counterweight assembly and the hammer core are detachably connected, characterized in that: a connecting cavity is opened at one end of the hammer core, a connecting through hole is opened through the counterweight assembly axially, the hammer lifting mechanism passes through the connecting through hole and is installed in the connecting cavity, the hammer core and the hammer lifting mechanism are detachably connected, and the operation of the hammer lifting mechanism drives the hammer core to reciprocate.

[0008] By adopting the above technical solution: the connecting cavity at one end of the hammer core is axially aligned with the connecting through hole on the counterweight assembly. The hammer lifting mechanism extends into the connecting cavity through the connecting through hole and is detachably connected to the hammer core. When the hammer lifting mechanism is in operation, it directly drives the hammer core to reciprocate along the hammer body. The counterweight assembly is sleeved on the outer periphery of the hammer lifting mechanism through the connecting through hole without increasing the overall height of the hammer core. This facilitates the replacement of different quantities or thicknesses of counterweight assemblies according to construction needs, avoiding the problem of the hammer body being too long and the lifting height being limited by the pile frame due to changes in the height of the counterweight assembly. This improves the adaptability and construction flexibility of the pile hammer with this detachable hammer core to piles of different lengths.

[0009] The aforementioned detachable hammer core can be further configured as follows: the hammer lifting mechanism includes a hammer lifting mounting base, a hammer lifting ring, and a piston rod. The hammer lifting mounting base has a connecting boss at one end facing the hammer core and a connecting groove for connecting the hammer lifting ring at the other end. One end of the hammer lifting ring passes through the connecting groove and is connected to the hammer lifting mounting base via a hammer lifting pin, while the other end is connected to the piston rod. The connecting boss passes through the connecting cavity. The hammer core has a mounting ring groove circumferentially formed at the end of the connecting cavity. A connecting hammer cover is detachably connected to the mounting ring groove. A hammer lifting through groove for the hammer lifting mounting base to pass through is formed in the middle of the connecting hammer cover. The connecting hammer cover closes the connecting cavity, causing the connecting boss to be detachably connected to the connecting cavity. The piston rod pulls the hammer lifting mounting base axially through the hammer lifting ring, thereby driving the hammer core to reciprocate.

[0010] By adopting the above technical solution: the connecting boss of the hammer mounting seat passes into the connecting cavity at the end of the hammer core, the connecting hammer cover is detachably connected to the hammer core through the mounting ring groove and closes the connecting cavity, so that the connecting boss is axially limited in the cavity, one end of the hammer lifting ring passes through the connecting groove and the end of the hammer mounting seat is limited by the side platform of the hammer lifting ring, and the other end is connected to the piston rod. The piston rod pulls the hammer mounting seat to move along the hammer body axis through the hammer lifting ring, thereby driving the hammer core to reciprocate. The connecting hammer cover facilitates the separation of the hammer core and the hammer lifting mechanism, and allows for quick replacement of the hammer core or counterweight components according to different construction requirements.

[0011] The aforementioned detachable hammer core can be further configured as follows: a first buffer assembly is provided through the hammer mounting base, the first buffer assembly is composed of several buffer rings, one end of the first buffer assembly abuts against the end face of the connecting hammer cover and the other end abuts against the end face of the connecting boss, and a second buffer assembly is provided in the connecting cavity, the second buffer assembly is composed of several buffer pads, one end of the second buffer assembly abuts against the end face of the connecting boss and the other end abuts against the end face of the connecting cavity.

[0012] By adopting the above technical solution: the first buffer assembly is located between the hammer lifting mounting base and the connecting hammer cover, with one end abutting the end face of the connecting hammer cover and the other end abutting the end face of the connecting boss; the second buffer assembly is located between the connecting boss and the bottom of the connecting cavity, with one end abutting the end face of the connecting boss and the other end abutting the end face of the connecting cavity. The two sets of buffer assemblies absorb impact energy when the hammer lifting mechanism starts and brakes, reducing rigid collisions between the hammer core and the hammer lifting mounting base, while ensuring uniform transmission of axial force, thus reducing the risk of fatigue damage to the connection parts under repeated impacts.

[0013] The aforementioned detachable hammer core can be further configured as follows: a positioning groove is radially opened through one end of the counterweight component near the hammer core, a connecting through hole divides the positioning groove into two groups, a positioning cylinder is inserted into the positioning groove, one end of the positioning cylinder is connected to a positioning mounting plate, and the other end abuts against the end face of the lifting hammer pin, an installation groove is opened around the positioning groove on the outer surface of the counterweight component, and the positioning mounting plate passes through the installation groove and is detachably connected to the counterweight component.

[0014] By adopting the above technical solution: the positioning groove radially penetrates the axially assembled counterweight assembly, the connecting through hole divides the positioning groove into two groups, the positioning cylinder passes through the positioning groove and its positioning mounting plate at one end is embedded in the mounting groove on the outer periphery of the counterweight assembly to achieve detachable fixation, and the positioning cylinder at the other end abuts against the end face of the lifting hammer pin, so that the axial lifting force of the lifting hammer pin is evenly transmitted to each axial unit of the counterweight assembly through the positioning cylinder and the positioning mounting plate in sequence. At the same time, the positioning cylinder spans across both sides of the connecting through hole to restrict the radial movement of the counterweight assembly under axial impact, thereby ensuring the reliability of the lifting force transmission and the stability of the hammer core movement when adapting to different numbers of counterweight blocks.

[0015] The aforementioned detachable hammer core can be further configured as follows: the counterweight assembly includes a first counterweight block and several sets of second counterweight blocks. One end of the first counterweight block is detachably connected to the hammer core, and the other end is detachably connected to a set of second counterweight blocks. Positioning grooves are distributed on the first counterweight block near the end of the hammer core. A first positioning boss extends outward from the end of the first counterweight block near the hammer core. The hammer core has a first positioning ring groove circumferentially formed in the mounting ring groove. The first positioning boss passes through the first positioning ring groove. The first counterweight block has a receiving groove in the inner cavity of the first positioning boss. The connecting hammer cover can pass through the receiving groove.

[0016] By adopting the above technical solution: one end of the first counterweight is detachably connected to the hammer core, the first positioning boss is inserted into the first positioning ring groove at the end of the hammer core to achieve radial positioning, the receiving groove accommodates the end of the connecting hammer cover and limits the connecting hammer cover, which improves the stability of the connecting hammer cover during the lifting process. At the same time, the connecting hammer cover is partially embedded in the first counterweight after installation, which reduces the total length occupied by the counterweight assembly and the connecting hammer cover in the axial direction. Thus, while increasing the number of counterweights, the overall height of the hammer core is not affected, which facilitates the construction of piles of different lengths within the limited hammer body stroke.

[0017] The aforementioned detachable hammer core can be further configured such that: a second positioning boss extends outward from the end of the second counterweight near the first counterweight, a second positioning ring groove is provided at the end of the first counterweight near the second counterweight, and the second positioning boss passes through the second positioning ring groove.

[0018] By adopting the above technical solution: the second positioning boss at the end of the second counterweight block is inserted into the second positioning ring groove at the end of the first counterweight block, so as to realize the axial insertion positioning and radial limiting between adjacent counterweight blocks. This makes it easy to flexibly increase or decrease the number of second counterweight blocks according to construction needs. At the same time, the insertion and connection reduces the extra installation space required for bolt connection, so that the counterweight assembly can reliably transmit the hammer lifting force while maintaining axial compactness.

[0019] The aforementioned detachable hammer core can be further configured as follows: a plurality of first fixing holes are opened on the end face of the hammer core facing the counterweight assembly; a plurality of second fixing holes are opened axially through the first counterweight block; a first fixing bolt is inserted through the second fixing hole of the first counterweight block; the end of the first fixing bolt is inserted through the first fixing hole and connected to the hammer core; a plurality of third fixing holes are opened on the end of the first counterweight block near the second counterweight block; a plurality of sets of third fixing holes are distributed between any two sets of second fixing holes; a plurality of sets of fourth fixing holes are opened axially through the second counterweight block; a second fixing bolt is inserted through the fourth fixing hole; the end of the second fixing bolt is inserted through the third fixing hole and connected to the first counterweight block.

[0020] By adopting the above technical solution: the first fixing bolt passes through the second fixing hole on the first counterweight and connects to the first fixing hole on the end face of the hammer core, thereby achieving axial fixation between the hammer core and the first counterweight. The second fixing bolt passes through the fourth fixing hole on the second counterweight and connects to the third fixing hole on the end face of the first counterweight, thereby achieving fixation between adjacent counterweights. The third fixing hole is distributed between any two sets of second fixing holes, so that the two sets of fixing bolts are staggered in the circumferential direction, reducing local stress concentration caused by overlapping holes. At the same time, it is convenient to add or remove the number of counterweights piece by piece according to construction needs, thereby improving the flexibility and connection reliability of the hammer core assembly.

[0021] The beneficial effects of this utility model are as follows: First, the connecting cavity at the end of the hammer core corresponds axially to the connecting through hole on the counterweight assembly. The hammer lifting mechanism extends through the connecting through hole into the connecting cavity and is detachably connected to the hammer core, so that the counterweight assembly is sleeved on the outer periphery of the hammer lifting mechanism without increasing the overall height of the hammer core. At the same time, the first positioning boss at the end of the first counterweight block enters the first positioning ring groove of the hammer core to achieve radial positioning. The receiving groove of the first counterweight block accommodates the end of the connecting hammer cover and limits the connection hammer cover. The second positioning boss of the second counterweight block is inserted into the second positioning ring groove of the first counterweight block, which facilitates the flexible increase or decrease of the number of counterweight blocks according to construction needs. This avoids the problem of the hammer body being too long due to the stacking of counterweight blocks, which is limited by the lifting height of the pile frame, and improves the adaptability of the hammer core to piles of different lengths and the construction flexibility.

[0022] Secondly, the connecting boss of the hammer lifting mounting base penetrates into the connecting cavity and is closed and limited by the connecting hammer cover. The first buffer component is located between the hammer lifting mounting base and the connecting hammer cover, and the second buffer component is located between the connecting boss and the bottom of the connecting cavity. When the hammer lifting mechanism starts and brakes, it absorbs impact energy and reduces rigid collisions. At the same time, the positioning groove radially penetrates the counterweight assembly, the positioning cylinder is inserted into the positioning groove, and the positioning mounting plate is embedded in the mounting groove on the outer periphery of the counterweight assembly. The other end of the positioning cylinder abuts against the end face of the hammer lifting pin, so that the axial lifting force of the hammer lifting pin is evenly transmitted to each axial unit of the counterweight assembly through the positioning cylinder and the positioning mounting plate and the radial movement is restricted. This ensures that the axial force is evenly transmitted and reduces the risk of fatigue damage at the connection point. Under the condition of adapting to different numbers of counterweights, the reliability of the hammer lifting force transmission and the stability of the hammer core movement are guaranteed.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention, showing the detachable hammer core installed on the hammer body; Figure 2 This is a cross-sectional schematic diagram of the detachable hammer core of this utility model installed on the hammer body; Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the middle structure; Figure 4 This is a schematic diagram of the lifting hammer mechanism of this utility model; Figure 5 This is a schematic diagram of the connecting hammer cover of this utility model; Figure 6 This is a schematic diagram of the hammer core structure of this utility model; Figure 7 This is a schematic diagram of the counterweight component of this utility model; Figure 8 This is a schematic diagram of the structure of the first counterweight of this utility model; Figure 9 This is a schematic diagram of the structure of the second counterweight of this utility model; Labeling notes: Hammer body 1, Hammer lifting mechanism 2, Hammer lifting mounting base 21, Connecting boss 211, Connecting groove 212, Hammer lifting ring 22, Piston rod 23, Hammer lifting pin 24, Connecting hammer cover 25, Hammer lifting through groove 251, Hammer core 3, Connecting cavity 31, Mounting ring groove 32, First positioning ring groove 33, First fixing hole 34, Counterweight assembly 4, Connecting through hole 41, First counterweight block 42, First positioning boss 421, Receiving groove 422, Second positioning ring groove 423, Second fixing hole 424, Third fixing hole 425, First fixing bolt 426, Second counterweight block 43, Second positioning boss 431, Fourth fixing hole 432, Second fixing bolt 433, Positioning groove 44, Positioning cylinder 45, Positioning mounting plate 46, Mounting groove 47, First buffer assembly 5, Buffer ring 51, Second buffer assembly 6, Buffer pad 61. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] A detachable hammer core is installed inside the hammer body 1, such as... Figures 1 to 9 As shown, the hammer includes a hammer lifting mechanism 2, a hammer core 3, and a counterweight assembly 4. The hammer core 3 is disposed inside the hammer body 1, and the counterweight assembly 4 is disposed at the end of the hammer core 3. A connecting cavity 31 is opened at one end of the hammer core 3, and a connecting through hole 41 is opened through the counterweight assembly 4 axially. The hammer lifting mechanism 2 passes through the connecting through hole 41 and is inserted into the connecting cavity 31. The hammer core 3 and the hammer lifting mechanism 2 are detachably connected. The operation of the hammer lifting mechanism 2 drives the hammer core 3 to reciprocate along the axis of the hammer body 1.

[0027] like Figure 4As shown, the hammer-lifting mechanism 2 includes a hammer-lifting mounting base 21, a hammer-lifting ring 22, and a piston rod 23. The hammer-lifting mounting base 21 has a connecting boss 211 at one end facing the hammer core 3, and a connecting groove 212 for connecting the hammer-lifting ring 22 at the other end. One end of the hammer-lifting ring 22 passes through the connecting groove 212 and is fixedly connected to the hammer-lifting mounting base 21 via a hammer-lifting pin 24; the other end is connected to the piston rod 23. The connecting boss 211 passes through the connecting cavity 31. The core 3 has a mounting ring groove 32 circumferentially opened at the end of the connecting cavity 31. A connecting hammer cover 25 is detachably connected in the mounting ring groove 32. A hammer lifting through groove 251 for the hammer lifting mounting seat 21 to pass through is opened in the middle of the connecting hammer cover 25. The connecting hammer cover 25 closes the connecting cavity 31, causing the connecting boss 211 to pass through the connecting cavity 31. The piston rod 23 pulls the hammer lifting mounting seat 21 to move axially along the hammer body 1 through the hammer lifting ring 22, thereby driving the hammer core 3 to reciprocate along the hammer body 1.

[0028] like Figure 7 As shown, the counterweight assembly 4 includes a set of first counterweight blocks 42 and a set of second counterweight blocks 43. One end of the first counterweight block 42 is detachably connected to the hammer core 3, and the other end is detachably connected to the set of second counterweight blocks 43. The counterweight assembly 4 has a positioning groove 44 radially penetrating through one end near the hammer core 3. The positioning grooves 44 are distributed at the end of the first counterweight block 42 near the hammer core 3. The end face of the first counterweight block 42 near the hammer core 3 extends outward with a first positioning boss 421. The hammer core 3 has a first positioning ring groove 33 circumferentially formed in the mounting ring groove 32. The first positioning boss 421 passes through the first positioning ring groove 33. The first counterweight block 42 has a receiving groove 422 in the inner cavity of the first positioning boss 421. The connecting hammer cover 25 can pass through the receiving groove 422.

[0029] The connecting through hole 41 divides the positioning groove 44 into two groups. A positioning cylinder 45 is inserted into the positioning groove 44. One end of the positioning cylinder 45 is connected to the positioning mounting plate 46, and the other end abuts against the end face of the lifting hammer pin 24. An installation groove 47 is opened around the positioning groove 44 on the outer surface of the counterweight component 4. The positioning mounting plate 46 is inserted into the installation groove 47 and is detachably connected to the counterweight component 4.

[0030] The second counterweight 43 extends outward from the end near the first counterweight 42 with a second positioning boss 431. The first counterweight 42 has a second positioning ring groove 423 at the end near the second counterweight 43, and the second positioning boss 431 passes through the second positioning ring groove 423.

[0031] The hammer core 3 has several first fixing holes 34 on one end face facing the counterweight assembly 4. The first counterweight block 42 has several second fixing holes 424 axially extending through it. The first counterweight block 42 has a first fixing bolt 426 passing through the second fixing holes 424. The end of the first fixing bolt 426 passes through the first fixing hole 34 and is connected to the hammer core 3. The first counterweight block 42 has several third fixing holes 425 near the end of the second counterweight block 43. Several sets of third fixing holes 425 are distributed between any two sets of second fixing holes 424. The second counterweight block 43 has several sets of fourth fixing holes 432 axially extending through it. The second fixing bolt 433 passes through the fourth fixing hole 432. The end of the second fixing bolt 433 passes through the third fixing hole 425 and is connected to the first counterweight block 42.

[0032] The hammer mounting base 21 is provided with a first buffer assembly 5, which is composed of several buffer rings 51. One end of the first buffer assembly 5 abuts against the end face of the connecting hammer cover 25 and the other end abuts against the end face of the connecting boss 211. The connecting cavity 31 is provided with a second buffer assembly 6, which is composed of several buffer pads 61. One end of the second buffer assembly 6 abuts against the end face of the connecting boss 211 and the other end abuts against the end face of the connecting cavity 31.

[0033] The working principle of this embodiment is as follows: First, the piston rod 23 is passed through the guide hole at the top of the hammer body 1, so that the lower end of the piston rod 23 is inside the hammer body 1. Then, the hammer lifting ring 22 is connected to the lower end of the piston rod 23. The other end of the hammer lifting ring 22 is connected to the connecting groove 212 at the top of the hammer lifting seat 21 through the hammer lifting pin 24, so that the hammer lifting seat 21 is suspended below the piston rod 23. At this time, the connecting boss 211 of the hammer lifting seat 21 faces downward, and the outer periphery of the hammer lifting seat 21 is pre-fitted with a first buffer assembly 5 composed of several buffer rings 51.

[0034] Then, the second counterweight 43 is first installed into the hammer body 1, and the hammer lifting mechanism 2 passes through the connecting through hole 41 in the middle of the second counterweight 43. Then, the first counterweight 42 is installed into the hammer body 1, and the hammer lifting mechanism 2 also passes through the connecting through hole 41 in the middle of the first counterweight 42, so that the connecting boss 211 extends a certain length from the lower end of the first counterweight 42.

[0035] Next, the hammer core 3 is placed inside the hammer body 1 and positioned below the first counterweight 42, so that the opening of the connecting cavity 31 of the hammer core 3 faces upward. Before the hammer core 3 is connected to the hammer lifting mechanism 2, the second buffer assembly 6 is placed inside the connecting cavity 31 and the connecting hammer cover 25 is placed on the outer periphery of the piston rod 23 through the hammer lifting groove 251. Then, the hammer core 3 is lifted so that the connecting boss 211 at the lower end of the hammer lifting mounting seat 21 passes into the connecting cavity 31 of the hammer core 3 until the end face of the connecting boss 211 abuts against the upper end face of the second buffer assembly 6.

[0036] The first buffer assembly 5 is then moved downwards along the outer periphery of the hammer mounting base 21, so that its lower end corresponds to the installation position of the connecting hammer cover 25. The connecting hammer cover 25 is then moved from the piston rod 23 towards the hammer mounting base 21, and then inserted into the mounting ring groove 32 at the end of the hammer core 3 and fixed with a connecting bolt. At this point, the connecting hammer cover 25 closes the connecting cavity 31, the upper end of the first buffer assembly 5 abuts against the end face of the connecting hammer cover 25, and the lower end abuts against the end face of the connecting boss 211. The connecting boss 211 of the hammer mounting base 21 is axially confined within the connecting cavity 31.

[0037] Then, the first positioning boss 421 at the lower end of the first counterweight 42 is aligned with the first positioning ring groove 33 at the end of the hammer core 3 and inserted to achieve radial positioning. Next, the first fixing bolt 426 is passed through the second fixing hole 424 on the first counterweight 42 and screwed into the first fixing hole 34 on the end face of the hammer core 3, thus fixing the first counterweight 42 to the hammer core 3. At this time, the end of the connecting hammer cover 25 is inserted into the receiving groove 422 inside the first counterweight 42.

[0038] Then, align the second positioning boss 431 at the end of the second counterweight 43 with the second positioning ring groove 423 at the end of the first counterweight 42 and insert it. Then, pass the second fixing bolt 433 through the fourth fixing hole 432 on the second counterweight 43 and screw it into the third fixing hole 425 on the end face of the first counterweight 42, so that the second counterweight 43 and the first counterweight 42 are fixedly connected.

[0039] Finally, install the positioning cylinder 45. Insert the positioning cylinder 45 into the positioning groove 44 at the end of the first counterweight 42, so that one end of the positioning cylinder 45 abuts against the end face of the hammer lifting pin 24 (the hammer lifting pin 24 has been pre-connected to the hammer lifting ring 22 and the hammer lifting mounting seat 21). The positioning mounting plate 46 at the other end of the positioning cylinder 45 is embedded into the mounting groove 47 on the outer periphery of the first counterweight 42, and the positioning mounting plate 46 is detachably fixed to the first counterweight 42 by screws or buckles, thus completing the assembly of the entire hammer core 3.

[0040] It should be noted that if the second counterweight 43 includes two or more sets, a third positioning ring groove can be opened at one end of the second counterweight 43 relative to the first counterweight 42, so that the second positioning boss 431 of the second set of second counterweight 43 passes into the third positioning ring groove of the first set of second counterweight 43, or the second positioning boss 431 of the second set of second counterweight 43 passes into the connecting through hole 41 of the first set of second counterweight 43, so as to realize the radial positioning connection of multiple sets of second counterweight 43. At the same time, a fifth fixing hole can be opened at one end face of the second counterweight 43 relative to the first counterweight 42, and the two adjacent sets of second counterweight 43 are fixedly connected by the second fixing bolt 433 passing through the fourth fixing hole 432 and the fifth fixing hole.

[0041] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A detachable hammer core, comprising a hammer lifting mechanism, a hammer core, and a counterweight assembly, wherein the counterweight assembly is detachably connected to the hammer core, characterized in that: The hammer core has a connecting cavity at one end, and the counterweight assembly has a connecting through hole extending axially through it. The hammer lifting mechanism passes through the connecting through hole and is installed in the connecting cavity. The hammer core and the hammer lifting mechanism are detachably connected. The hammer lifting mechanism includes a hammer lifting mounting base, a hammer lifting ring, and a piston rod. The hammer lifting mounting base has a connecting boss at one end facing the hammer core and a connecting groove for connecting the hammer lifting ring at the other end. One end of the hammer lifting ring passes through the connecting groove and is connected to the hammer lifting mounting base via a hammer lifting pin. The other end is connected to the piston rod. The connecting boss passes through the connecting cavity. The hammer core has a mounting ring groove circumferentially installed at the end of the connecting cavity. A connecting hammer cover is detachably connected to the mounting ring groove. The connecting hammer cover has a hammer lifting through groove in the middle for the hammer lifting mounting base to pass through. The connecting hammer cover closes the connecting cavity, allowing the connecting boss to be detachably connected to the connecting cavity. The piston rod pulls the hammer lifting mounting base axially through the hammer lifting ring, thereby driving the hammer core to reciprocate.

2. The detachable hammer core according to claim 1, characterized in that: The hammer mounting base is provided with a first buffer assembly, which consists of several buffer rings. One end of the first buffer assembly abuts against the end face of the connecting hammer cover and the other end abuts against the end face of the connecting boss. A second buffer assembly is provided in the connecting cavity, which consists of several buffer pads. One end of the second buffer assembly abuts against the end face of the connecting boss and the other end abuts against the end face of the connecting cavity.

3. A detachable hammer core according to claim 1, characterized in that: The counterweight assembly has a positioning groove radially extending through one end near the hammer core. The connecting through hole divides the positioning groove into two groups. A positioning cylinder is inserted into the positioning groove. One end of the positioning cylinder is connected to a positioning mounting plate, and the other end abuts against the end face of the lifting hammer pin. The outer surface of the counterweight assembly has an installation groove circumferentially formed in the positioning groove. The positioning mounting plate passes through the installation groove and is detachably connected to the counterweight assembly.

4. A detachable hammer core according to claim 3, characterized in that: The counterweight assembly includes a first counterweight block and several sets of second counterweight blocks. One end of the first counterweight block is detachably connected to the hammer core, and the other end is detachably connected to a set of second counterweight blocks. The positioning groove is distributed on the first counterweight block near the hammer core. The end of the first counterweight block near the hammer core extends outward with a first positioning boss. The hammer core has a first positioning ring groove circumferentially formed in the mounting ring groove. The first positioning boss passes through the first positioning ring groove. The first counterweight block has a receiving groove in the inner cavity of the first positioning boss. The connecting hammer cover can pass through the receiving groove.

5. A detachable hammer core according to claim 4, characterized in that: The second counterweight has a second positioning boss extending outward from the end near the first counterweight, and the first counterweight has a second positioning ring groove at the end near the second counterweight, with the second positioning boss passing through the second positioning ring groove.

6. A detachable hammer core according to claim 5, characterized in that: The hammer core has several first fixing holes on one end face facing the counterweight assembly. The first counterweight block has several second fixing holes axially extending through it. A first fixing bolt passes through the second fixing hole in the first counterweight block. The end of the first fixing bolt passes through the first fixing hole and connects to the hammer core. The first counterweight block has several third fixing holes near the end of the second counterweight block. Several sets of third fixing holes are distributed between any two sets of second fixing holes. The second counterweight block has several sets of fourth fixing holes axially extending through it. A second fixing bolt passes through the fourth fixing hole. The end of the second fixing bolt passes through the third fixing hole and connects to the first counterweight block.

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