Manual hydraulic breaching tool

Abstract

The application discloses a manual hydraulic breaking tool, comprising a manual hydraulic device and a breaking tool set, the manual hydraulic device has a working end and an extension part, the breaking tool set comprises a first breaking assembly and a second breaking assembly, the first breaking assembly is detachably connected to the working end, the manual hydraulic device can drive the first breaking assembly to perform a breaking action through the working end, and the second breaking assembly is detachably connected to the extension part. The manual hydraulic breaking tool comprises the first breaking assembly and the second breaking assembly which are different in function, the first breaking assembly is detachably connected to the working end of the manual hydraulic device, the second breaking assembly is detachably connected to the extension part of the manual hydraulic device, and thus the manual hydraulic breaking tool integrates multiple functions.

Description

Technical Field

[0001] This application relates to the field of rescue equipment, and in particular to a manual hydraulic demolition tool. Background Technology

[0002] Demolition tools are specialized equipment used to quickly destroy or remove obstacles, and are widely used in firefighting, emergency rescue, and traffic accident handling. Manual hydraulic demolition tools are not limited by power supply or fuel, are small in size, and are suitable for working in confined spaces.

[0003] Current manual hydraulic rescue tools have only single rescue components, such as expansion or shearing functions, which are relatively limited in functionality and cannot adapt to complex rescue scenarios. Utility Model Content

[0004] In view of the above problems, this application provides a manual hydraulic demolition tool that integrates multiple functions and is suitable for complex rescue scenarios.

[0005] In a first aspect, embodiments of this application provide a manual hydraulic demolition tool, comprising: a manual hydraulic device and a demolition tool assembly, wherein the manual hydraulic device has a working end and an extension, and the demolition tool assembly includes a first demolition component and a second demolition component, wherein the first demolition component is detachably connected to the working end, and the manual hydraulic device is capable of driving the first demolition component to perform demolition actions through the working end, and the second demolition component is detachably connected to the extension.

[0006] In some embodiments, the first demolition assembly includes a cutting and spreading blade assembly, the cutting and spreading blade assembly including two blade portions hinged together, the blade portions having shearing edges;

[0007] Along the axial direction of the hinge axis of the two blade portions, a clearance groove is provided on the side of the blade portion facing away from the shearing blade;

[0008] When the two blade sections are in a closed state, the shearing edge of one blade section is located in the clearance groove of the other blade section so that the two blade sections are aligned.

[0009] In some embodiments, the blade tip is provided with an auxiliary blade, the blade surface of the auxiliary blade located on one side of the shearing blade is a first blade surface, the blade surface of the auxiliary blade located on one side of the blade back is a second blade surface, and the first blade surface and the second blade surface of the auxiliary blade are connected at an acute angle.

[0010] In some embodiments, the second demolition assembly includes a hammer assembly, the hammer assembly having a quick-release connector inside;

[0011] The extension includes an extension rod extending away from the working end, and the free end face of the extension rod is provided with a locking protrusion, which can be locked into the quick-release connector.

[0012] Specifically, when the quick-release connector engages with the locking protrusion, it can lock the connection between the extension rod and the hammer assembly; when the quick-release connector disengages from the locking protrusion, it can unlock the connection between the extension rod and the hammer assembly.

[0013] In some embodiments, the hammer assembly includes a first hammerhead and a hammer handle connected together, the hammer handle including a mounting section connected to the first hammerhead and a grip section connected to the mounting section; the grip section has a hollow structure and can be fitted onto the extension rod.

[0014] The mounting section is provided with a receiving hole that communicates with the hollow structure to accommodate the locking protrusion, and the side wall of the mounting section forming the receiving hole is provided with two opposing pin through holes.

[0015] The quick-release connector includes a first pin and a second pin arranged along the length direction. The radial dimension of the first pin is larger than that of the second pin. The quick-release connector passes through the two pin through holes, and the first pin and the second pin are located in the receiving hole.

[0016] The locking protrusion has a limiting groove on the side wall facing the two pins. When the quick-release connector is pressed at different ends corresponding to the two pin through holes, the quick-release connector can move axially in the two pin through holes so that the first pin or the second pin of the quick-release connector corresponds to the limiting groove. When the first pin corresponds to the limiting groove, at least a portion of the first pin is located in the limiting groove to restrict the locking protrusion from moving out of the receiving hole. When the second pin corresponds to the limiting groove, the second pin is located outside the limiting groove so that the locking protrusion can move out of the receiving hole.

[0017] In some embodiments, the quick-release connector includes a first capped pin, a second capped pin, and a compression spring. The first capped pin and the second capped pin extend into the receiving hole through the respective pin through holes and are connected. At least a portion of the pin of the first capped pin is the first pin, and at least a portion of the pin of the second capped pin is the second pin. The compression spring is sleeved on the second capped pin and is located between the cap end of the second capped pin and the corresponding pin through hole of the second capped pin.

[0018] In some embodiments, the demolition tool set further includes a third demolition component, which is detachably connected to the first demolition component.

[0019] In some embodiments, the first demolition assembly includes a cutting and spreading blade assembly, the cutting and spreading blade assembly including two blade portions; the third demolition assembly includes a hammer assembly, the hammer assembly including a hammer body and a locking connector, the locking connector being detachably connected to the two blade portions and the hammer body.

[0020] In some embodiments, the hammer body includes a second hammerhead and a hammerhead seat connected to the second hammerhead. The locking connector includes a locking portion and a connecting portion. The connecting portion connects the blade portion and the hammerhead seat. The locking portion is used to lock the connecting portion.

[0021] The locking part can be magnetically connected to the hammer head seat to lock the connecting part; and / or,

[0022] The first end of the hammerhead seat is connected to the second hammerhead, and the second end forms two clamping arms. There is a clamping space between the two clamping arms to accommodate the blade portion. Each clamping arm is provided with at least one first pin hole, and the blade portion is provided with at least one second pin hole. The connecting part includes at least one pin shaft. The number of first pin holes on each clamping arm, the number of second pin holes on the blade portion, and the number of pin shafts are the same. Each pin shaft passes through the corresponding first pin hole of each clamping arm and the corresponding second pin hole on the blade portion. The locking part includes a cap. The cap is connected to one end of each pin shaft that extends out of one of the clamping arms to lock each pin shaft.

[0023] In some embodiments, the second end of the hammerhead base has two clamping arms, each clamping arm having at least two first pin holes. The connector connects the blade portion and the hammerhead base through the first pin holes. A magnet mounting countersunk hole is provided between different first pin holes of at least one clamping arm. A magnetic element is placed in the magnet mounting countersunk hole to achieve the adsorption connection.

[0024] In some embodiments, the manual hydraulic device includes a hydraulic pump, a directional valve, and a hydraulic cylinder, wherein the hydraulic pump is connected to the hydraulic cylinder via the directional valve; wherein the hydraulic pump is a single-stage radial piston pump.

[0025] In some embodiments, the hydraulic pump includes an oil bladder, an oil supply channel, an oil return channel, a plunger cavity, and a plunger. The oil supply channel and the oil return channel are both connected to the oil bladder. The plunger cavity is connected to the side wall of the oil supply channel, and the plunger is located inside the plunger cavity. The extension is sleeved on the outside of the oil bladder.

[0026] In some embodiments, the manual hydraulic demolition tool further includes a handle-type locking element, which includes a first fastener, a second fastener with a handle, and a locking element, wherein the first end of the first fastener and the second fastener are hinged together and the second end is connected through the locking element.

[0027] Secondly, embodiments of this application provide a manual hydraulic demolition tool, including a manual hydraulic device and a demolition tool assembly. The manual hydraulic demolition device has a working end and an extension portion disposed far apart from each other. The demolition tool assembly includes a cutting and spreading blade assembly, a hammer assembly, and a hammer assembly. The cutting and spreading blade assembly is detachably connected to the working end, and the working end drives the cutting and spreading blade assembly to perform demolition actions. The hammer assembly is detachably connected to the extension portion. The cutting and spreading blade assembly includes two blade portions hinged together, and the hammer assembly is detachably connected to the two blade portions.

[0028] The beneficial effects of the embodiments of this application, which differ from the prior art, are as follows: the manual hydraulic demolition tool includes a first demolition component and a second demolition component with different functions. The first demolition component is detachably connected to the working end of the manual hydraulic device, and the second demolition component is detachably connected to the extension of the manual hydraulic device, so that the manual hydraulic demolition tool integrates multiple functions into one.

[0029] Optionally, when the first demolition component is a shearing and spreading blade component and the second demolition component is a hammer component, the manual hydraulic demolition tool integrates functions such as expansion, shearing, tearing, slit opening, hammering, and lifting.

[0030] In addition, the manual hydraulic demolition tool of this application also includes a third demolition component that is detachably connected to the first demolition component, further enriching the function of the manual hydraulic demolition tool; optionally, the third demolition component is a hammer component, so that the manual hydraulic demolition tool also has an impact function. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0032] Figure 1 This is a schematic diagram of the structure of a manual hydraulic demolition tool provided in one embodiment of this application;

[0033] Figure 2 yes Figure 1 An exploded view of a manual hydraulic demolition tool;

[0034] Figure 3This is a schematic diagram of the structure of the first demolition component (shear and spreader assembly) of a manual hydraulic demolition tool provided in an embodiment of this application;

[0035] Figure 4 yes Figure 3 A schematic diagram of a portion of the structure of a shearing and spreading blade assembly;

[0036] Figure 5 yes Figure 4 Enlarged diagram of section A in the middle;

[0037] Figure 6 yes Figure 3 A schematic diagram of a portion of the blade section of a scissor spreader assembly;

[0038] Figure 7 yes Figure 3 The auxiliary blade of the schematic scissor spreader assembly is projected onto the axial direction of the hinge axis of the two blade sections;

[0039] Figure 8 yes Figure 3 A schematic diagram of the blade section of a scissor-spreader assembly from one viewpoint;

[0040] Figure 9 yes Figure 3 A schematic diagram of the blade section of the scissor assembly from another perspective;

[0041] Figure 10 yes Figure 3 A schematic diagram of the scissor blade assembly (excluding the fixing rod);

[0042] Figure 11 This is a schematic diagram of the structure of the second demolition component (hammer component) of a manual hydraulic demolition tool provided in an embodiment of this application;

[0043] Figure 12 yes Figure 11 A schematic diagram illustrating the structure of the hammer assembly with a quick-release connector on the hammer handle;

[0044] Figure 13 yes Figure 12 An exploded view of the structure shown;

[0045] Figure 14 yes Figure 11 A schematic diagram of the quick-release connector on the hammer assembly;

[0046] Figure 15 yes Figure 11 A schematic diagram of the extension rod fitted onto the hammer assembly;

[0047] Figure 16 yes Figure 11A schematic diagram illustrating the locking connection between the hammer assembly (excluding the first hammer head) and the extension rod;

[0048] Figure 17 yes Figure 11 A schematic diagram of the structure of the first hammer head of the hammer assembly;

[0049] Figure 18 This is a schematic diagram of the structure of the third demolition component (hammer assembly) of a manual hydraulic demolition tool provided in an embodiment of this application;

[0050] Figure 19 yes Figure 18 A schematic diagram illustrating the connection between the hammer assembly and the shearing and spreading blade assembly;

[0051] Figure 20 yes Figure 18 A schematic diagram of the hammer body of the hammer assembly;

[0052] Figure 21 yes Figure 18 A schematic diagram of the locking connector of the hammer assembly;

[0053] Figure 22 This is a schematic diagram of the handle-type locking component in a manual hydraulic demolition tool provided in one embodiment of this application;

[0054] Figure 23 yes Figure 1 A schematic cross-sectional view of a manual hydraulic demolition tool;

[0055] Figure 24 yes Figure 19 A schematic diagram of a partial structure in cross-section;

[0056] Figure 25 yes Figure 1 A schematic diagram illustrating the working principle of the directional valve in a manual hydraulic demolition tool;

[0057] Figure 26 This is a schematic diagram of the structure of a manual hydraulic demolition tool provided in another embodiment of this application.

[0058] Figure label:

[0059] 10-Manual hydraulic device; 101-Working end; 102-Extension; 1021-Extension rod; 103-Positioning groove; 11-Hydraulic pump; 111-Plunger; 112-Oil supply channel; 113-Oil bladder; 114-Oil inlet port; 115-Oil outlet port; 116-Side wall oil port; 117-First ball directional valve; 118-Second ball directional valve; 119-Hand lever; 12-Directional valve; 121-Directional handle; 13-Hydraulic cylinder; 131-Piston body; 132-Guide rod; 133-Piston; 134-Piston rod; 135-First oil chamber; 136-Second oil chamber; 137-First stepped surface; 138-Second stepped surface;

[0060] 20-First demolition component; 201-Blade section; 202-Shearing blade; 203-Blade back; 204-Groove; 205-Auxiliary blade; 206-First cutting edge; 207-Second cutting edge; 208-Straight line; 209-First bend; 210-Second bend; 211-Third bend; 212-First high platform; 213-First low platform; 214-First sidewall; 215-Blade tail sidewall section; 216-Blade tip sidewall section; 217-Second high platform; 21 8 - Second lower platform; 219 - Third side wall; 220 - Movable connecting plate; 221 - Connector; 222 - First end; 223 - Second end; 224 - Third end; 225 - Fourth end; 226 - Third through hole; 227 - Second connecting shaft; 228 - Fixing rod; 229 - Sixth through hole; 230 - Third connecting shaft; 231 - Second side wall; 232 - First connecting shaft; 233 - First surface; 234 - Second surface; M - Axial direction of the hinge shaft of the two blade sections;

[0061] 30-Second breaking assembly; 301-Quick-release connector; 302-Locking protrusion; 303-First hammerhead; 304-Hammer handle; 305-Mounting section; 306-Handle section; 307-Accommodation hole; 308-Pin through hole; 309-First pin; 310-Second pin; 311-First capped pin; 312-Second capped pin; 313-Limiting groove; 314-Through hole limiting seat; 315-Striking part; 316-Grip part; 317-Pin-pulling part; 318-Positioning pin hole; 319-Positioning groove; 320-Threaded connecting rod; N-Spring position; L-Locking direction; K-Unlocking direction; d1-Radial dimension of the first pin; d2-Radial dimension of the second pin;

[0062] 40 - Third demolition component; 41 - Hammer body; 411 - Second hammer head; 412 - Hammer head seat; 413 - Clamping arm; 414 - First pin hole; 415 - Magnet mounting countersunk hole; 42 - Locking connector; 43 - Locking part; 431 - Cap; 432 - Handle; 433 - Base; 434 - Hand grip ring; 44 - Connecting part; 441 - Pin;

[0063] 50 - Handle-type locking component; 51 - First fastener; 52 - Second fastener; 53 - Locking component. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0065] like Figure 1 and Figure 2 As shown, one embodiment of this application provides a manual hydraulic demolition tool, including: a manual hydraulic device 10 and a demolition tool assembly. The manual hydraulic device 10 has a working end 101 and an extension 102. The demolition tool assembly includes a first demolition component 20 and a second demolition component 30. The first demolition component 20 is detachably connected to the working end 101. The manual hydraulic device 10 can drive the first demolition component 20 to perform demolition actions through the working end 101. The second demolition component 30 is detachably connected to the extension 102.

[0066] The manual hydraulic demolition tool provided in this embodiment has at least a first demolition component 20 and a second demolition component 30 with different functions, thereby diversifying the functions of the manual hydraulic demolition tool.

[0067] In the manual hydraulic demolition tool provided in this embodiment, the manual hydraulic device 10 provides power to the first demolition component 20. In a specific embodiment, the manual hydraulic device 10 may include a hydraulic pump, a reversing valve, and a cylinder. The hydraulic pump is connected to the hydraulic cylinder via the reversing valve. The piston rod (also known as the cylinder rod) of the hydraulic cylinder transmits power through reciprocating motion. The hydraulic pump, the reversing valve, and the cylinder are sequentially connected in the axial direction of the piston rod, wherein the hydraulic pump and the reversing valve are both manual. It should be noted that, in the embodiments of this application, the working end 101 of the manual hydraulic device 10 refers to the free end of the piston rod, and the extension 102 is disposed away from the working end 101 in the axial direction of the piston rod.

[0068] In the embodiments of this application, the first demolition component 20 can be any one of a shearing device, an expansion device, a support device, or a shearing and expanding blade assembly. This application does not impose any particular limitation on the first demolition component 20.

[0069] As an optional implementation method, such as Figures 3 to 10 As shown, the first demolition assembly 20 includes a cutting and spreading knife assembly, which includes two blade portions 201 hinged together, each blade portion 201 having a shearing edge 202 and a blade back 203.

[0070] Along the axial direction of the hinge axis (i.e., the third connecting shaft 230 hereinafter) of the two blade portions 201, a clearance groove 204 is provided on the side of the blade portion 201 facing away from the shearing blade 202; when the two blade portions 201 are in the closed state, the shearing blade 202 of one blade portion 201 is located within the clearance groove 204 of the other blade portion 201, so that the two blade portions 201 are aligned. (Refer to...) Figure 3 and Figure 4 The direction M indicates the axial direction of the hinge axis of the two blade parts 201. The two blade parts 10 are hinged together in the direction M, and the rotation direction of the two blade parts 10 is perpendicular to the direction M.

[0071] Typically, the blade portion 201 with shearing and expanding function has a shearing and expanding area connected to the blade tip and a hinged area connected to the blade tail. The alignment described in this application should be understood as the shearing and expanding areas of the two blade portions 201 not being completely misaligned; that is, the projections of the shearing and expanding areas of the two blade portions 201 in the rotation direction at least partially overlap. In a specific embodiment, the alignment of the two blade portions 201 can be such that, in the rotation direction of the blade portions 201, the shearing and expanding areas of the two blade portions 201 are flush, that is, the projections of the shearing and expanding areas of the two blade portions 201 in the rotation direction completely overlap. This can evenly distribute the shearing force, reduce stress concentration on one side, and at the same time, alignment can ensure the quality of expansion and avoid the problem of poor expansion accuracy when the two blade portions 201 are misaligned.

[0072] Specifically, the clearance groove 204 is an L-shaped notch provided on the side of the blade portion 201 facing away from the shearing blade 202 (i.e., the first surface 233 below) in the direction M, near the shearing blade 202. The clearance groove of one blade portion provides a space for the shearing blade of the other blade portion.

[0073] In this embodiment, the relief groove of one blade part 201 provides a space for the shearing blade of the other blade part 201, so that the two blade parts 201 are aligned. Through the flush part of the two blade parts 201, good shearing and expansion functions are achieved; and the relief groove has a certain protective effect on the shearing blade, preventing the blade parts 201 from directly colliding and causing wear, thus improving the shearing quality.

[0074] Typically, the side where the back of the blade 203 is located is thicker than the side where the shearing blade 202 is located, which can provide structural strength and improve the overall rigidity of the blade part 201; and the thicker back of the blade 203 can disperse the stress concentration when the shearing blade 202 is subjected to force, avoiding local deformation.

[0075] As an optional implementation method, such as Figures 4 to 6 As shown, the blade tip of the cutting edge 201 is provided with an auxiliary cutting edge 205. (Refer to...) Figure 5 The dotted line indicates the tip of the blade as auxiliary edge 205, which should be understood. Figure 5The following is an illustration of the division of auxiliary blade 205. In practice, auxiliary blade 205 can also be understood as... Figure 5 The middle dashed line is closer to the smaller tip of the blade, or... Figure 5 The middle dotted line is closer to the larger tip of the blade; in short, the auxiliary edge 205 includes the very tip of the blade portion. (See reference) Figure 6 The circled area around the blade tip is the auxiliary blade 205. The blade face of the auxiliary blade 205 located to one side of the shearing blade 202 is the first blade face 206, and the blade face of the auxiliary blade 205 located to one side of the blade back 203 is the second blade face 207. The first blade face 206 and the second blade face 207 of the auxiliary blade 205 are connected at an acute angle. In this embodiment, the auxiliary blade 205 is located at the tip of the blade section 201, and the first blade face 206 and the second blade face 207 are connected at an acute angle. This makes the tip of the blade section 201 sharp and pointed, with a sharp conical tip, which enhances impact resistance and gives the shearing and spreading blade assembly excellent tearing and slit-opening functions.

[0076] It should be noted that, in the embodiments of this application, the blade tip of the blade portion 201 is the location of the auxiliary blade 205; the blade tip point of the blade portion 201 is the sharpest part at the foremost end of the blade portion 201, and the blade tip point is a part of the blade tip; the first cutting surface 206 of the auxiliary blade 205 and the cutting surface of the shearing blade 202 are located in the same inclined plane and are connected.

[0077] As an optional implementation method, such as Figure 7 As shown, the projection of the first cutting surface 206 along the axial direction of the hinge axis of the two blade sections 201 is a straight line 208. The projection of the second cutting surface 207 along the axial direction of the hinge axis of the two blade sections 201 consists of multiple connected broken lines, and the angle between each broken line and the straight line 208 is an acute angle. The multiple continuous broken lines indicate that the second cutting surface is a tortuous and continuous cutting surface. The second cutting surface contains multiple small cutting surfaces, each of which is a cutting surface. This can disperse the concentrated stress during the tearing and slit opening process to a certain extent, increase the cutting surface area, disperse wear, and improve the service life of the shearing and slitting blade assembly. The angle between each broken line and the straight line 208 is an acute angle, and each small cutting surface is inclined from the tip to the tail on the back side of the blade, effectively ensuring the sharpness of the blade tip and improving the tearing and slit opening effect.

[0078] As an optional implementation method, refer to Figure 7The multiple connected broken lines include a first broken line 209, a second broken line 210, and a third broken line 211 connected sequentially from the tip of the blade to the tail. The angle between the first broken line 209 and the straight line 208 is greater than the angle between the second broken line 210 and the straight line 208, and the angle between the third broken line 211 and the straight line 208 is greater than the angle between the second broken line 210 and the straight line 208. This allows the second cutting surface to form a progressive cutting angle, so that the cutting surface initially cuts into the target at a larger angle, and then gradually reduces the angle, thereby reducing initial resistance and improving penetration efficiency. This avoids the problem of easy chipping caused by a single-angle cutting surface, and thus effectively improves the tearing and kerfing effects.

[0079] As an optional implementation, among the angles between each broken line and the straight line 208, the broken line furthest from the straight line 208 (e.g., Figure 7 The angle between the third broken line (211) and the straight line (208) is the largest. The furthest broken line makes the end of the second cutting surface form a gentler cutting angle, reducing the initial penetration resistance and improving the tearing and slit-opening effect.

[0080] As an optional implementation method, such as Figure 8 and 9 As shown, the blade portion 201 has two opposing sides, wherein the side with the relief groove 204 is the first side 233, and the side facing away from the relief groove 204 is the second side 234. The first side 233 has a first descending step structure from the back of the blade 203 toward the shearing edge 202. The first descending step structure includes a first high platform 212 near the back of the blade 203, a first low platform 213 near the shearing edge 202, and a first sidewall 214 connecting the first high platform 212 and the first low platform 213. The first sidewall 214 and the first low platform 213 form the relief groove 204. The first high platform 212 forms a reinforcing structure on the side where the back of the blade 203 is located, improving the structural strength of the blade portion 201; the first sidewall 214 and the first low platform 213 form the relief groove 204, which provides a receiving space for the shearing edge 202 when the two blade portions 201 are in a closed state, and provides conditions for the two blade portions 201 to be aligned.

[0081] refer to Figures 3 to 10In one specific embodiment, the distance between the first raised platform 212 of the blade portion 201 and the second surface 234 of the back relief groove 204 is a first dimension, and the groove height of the relief groove 204 (i.e., the height of the first sidewall 214) is a second dimension. Preferably, the second dimension is half of the first dimension. In this way, the portion between the first raised platform 212 of each blade portion 201 and the second surface 234 of the back relief groove 204 is aligned in the rotation direction of the blade portion 201. In other words, the first raised platform 212 of one blade portion 201 and the second surface 234 of the back relief groove 204 of another blade portion 201 are flush in the rotation direction of the blade portion 201. This can both evenly distribute the shearing force and improve the shearing effect, and also achieve good expansion function by utilizing the flush portion.

[0082] As an optional implementation method, such as Figure 5 and Figure 6 As shown, the blade section 201 has an auxiliary blade 205 at its tip. The first high platform 212 extends towards the blade tip and terminates at the auxiliary blade 205. The second sidewall 231 between the end of the first high platform 212 closest to the blade tip and the first low platform 213 is a slope. That is, the first high platform 212 is not connected to the blade tip of the blade section 201, but is connected to the first low platform 213 through the sloped second sidewall 231. In this way, the auxiliary blade 205 is an exposed tip relative to the first high platform 212, giving the scissor-spreader assembly good tearing and slit-opening functions.

[0083] As an optional implementation method, such as Figure 8 As shown, the first sidewall 214 includes a tail sidewall section 215 and a tip sidewall section 216. The tip sidewall section 216 is closer to the tip than the tail sidewall section 215. That is, the distance between the tip sidewall section 216 and the shearing blade 202 is less than the distance between the tail sidewall section 215 and the shearing blade 202. The tip sidewall section 216 serves as a blade abutment part to abut against the shearing blade 202 of the other blade section 201 when the two blade sections 201 are closed.

[0084] Reference Figure 8 In one blade section 201, the distance between the tip sidewall section 216 and the shearing blade 202 is less than the distance between the tail sidewall section 215 and the shearing blade 202; combined Figure 4When the two blade sections 201 are closed, the distance between the tip sidewall section 216 of one blade section 201 and the shearing edge 202 of the other blade section 201 is smaller than the distance between the tail sidewall section 215 of the same blade section 201 and the shearing edge 202 of the other blade section 201. This design allows for a smaller distance at the tip, creating a high stress concentration zone in the early stages of shearing, while the increased distance at the tail disperses stress in the later stages of shearing, preventing the root of the shearing edge from cracking due to continuous stress. Furthermore, the tip sidewall section 216, acting as a blade abutment, provides a stopping effect when the two blade sections 201 are closed, effectively preventing excessive rotation of the blade sections 201 and extending the service life of the shearing and spreading assembly.

[0085] As an optional implementation, the cutting edge 202 has a toothed surface, which can increase friction when in contact with the target, effectively fix the target and prevent slippage; at the same time, it can make the cutting action easier.

[0086] As an optional implementation method, such as Figure 9 As shown, the second surface 234 of the blade portion 201 facing away from the relief groove 204 has a second descending stepped structure from the tail to the tip. The second descending stepped structure includes a second high platform 217 near the tail, a second low platform 218 near the tip, and a third sidewall 219 connecting the second high platform 217 and the second low platform 218. The third sidewall 219 is a slope, and / or the back of the second low platform 218 is toothed.

[0087] Along the axial direction of the hinge axis of the two blade portions 201, the tail portion corresponding to the second high platform 217 forms a reinforcing structure to facilitate the setting of a through hole for connection.

[0088] The third sidewall 219 is the transition surface between the second high platform 217 and the second low platform 218. It can be a slope or an arc-shaped surface that is concave from the second high platform 217 to the second low platform 218. This can avoid the problem of stress concentration during shearing. A slope is easier to implement than an arc-shaped surface. Preferably, the third sidewall 219 is a slope.

[0089] The second low platform 218 is connected to the blade tip. The back of the blade of the second low platform 218 is serrated, which can play a non-slip role when expanding, tearing, or opening.

[0090] Based on this, the alignment of the two blade portions 201 in this application is further understood according to the high and low platform surfaces. From the tip to the tail, the portion of the blade portion 201 corresponding to the second low platform 218 is the shearing and expanding zone, and the portion of the blade portion 201 corresponding to the second high platform 217 is the hinge zone. The alignment of the two blade portions 201 specifically means that, in the rotation direction of the two blade portions 201, the portions of the two blade portions 201 corresponding to the second low platform 218 partially overlap or are flush, thus ensuring that the shearing and expanding blade assembly has good shearing and expanding functions.

[0091] As an optional implementation method, such as Figure 10 As shown, the scissor spreader assembly also includes two movable connecting plates 220 and a connector 221. The first ends 222 of the two movable connecting plates 220 are respectively hinged to the tails of the two blade sections 201. The second ends 223 of the two movable connecting plates 220 are hinged to the third ends 224 of the connector 221. The fourth end 225 of the connector 221 can receive driving force (such as the driving force generated by the aforementioned manual hydraulic device), thereby driving the two blade sections 201 to open or close through the connector 221. When the connector 221 moves toward the hinged part of the two blade sections 201, the two blade sections 201 open; when the connector 221 moves away from the hinged part of the two blade sections 201, the two blade sections 201 close.

[0092] As an optional implementation method, refer to Figure 10 The two movable connecting plates 220 have a first through hole at their second end 223 and a first U-shaped clamp at their third end 224. The two clamping arms of the first U-shaped clamp have second through holes. The second ends 223 of the two movable connecting plates 220 are clamped between the two clamping arms of the first U-shaped clamp. A first connecting shaft 232 passes through each of the first and second through holes to achieve hinged connection between the two movable connecting plates 220 and the connecting member 221. The two blade sections 201 are hinged together, and the connecting member 221 drives the two movable connecting plates 220 to move, thereby opening and closing the two blade sections 201.

[0093] As an optional implementation method, such as Figure 4 and Figure 8 As shown, the first surface 233 of the blade portion 201 with the clearance groove 204 has a first descending stepped structure in the direction from the blade back 203 to the shearing edge 202. The first descending stepped structure includes a first high platform surface 212 near the blade back 203 and a first low platform surface 213 near the shearing edge 202; and, as Figure 4 and Figure 9 As shown, the second surface 234 of the blade portion 201 facing away from the relief groove 204 has a second descending step structure from the tail to the tip. The second descending step structure includes a second high platform 217 near the tail and a second low platform 218 near the tip.

[0094] It is understandable that the part of the blade portion 201 that corresponds to both the first high platform 212 and the second high platform 217 is the thickest part of the blade portion 201, the part of the blade portion 201 that corresponds to both the first low platform 213 and the second low platform 218 is the thinnest part of the blade portion 201, and the thickness of the part of the blade portion 201 that corresponds to both the second high platform 217 and the first low platform 213 is between the thickest and thinnest parts.

[0095] Furthermore, a second U-shaped clamp is formed at the first blade tail of the blade part 201 corresponding to the first high platform 212. The two clamping arms of the second U-shaped clamp are arranged axially on the hinge axis of the two blade parts 201 and are provided with a third through hole 226. The first end 222 of the two movable connecting plates 220 is provided with a fourth through hole. The first end 222 of each movable connecting plate is clamped between the two clamping arms of the second U-shaped clamp of the corresponding blade part 201, and the second connecting shaft 227 is used to pass through the third through hole 226 and the fourth through hole to realize the hinge connection between the movable connecting plate 220 and the corresponding blade part 201.

[0096] In this embodiment, the third through hole 226 simultaneously penetrates the first high platform 212 and the second high platform 217. The first cutter tail where the second U-shaped clamp is located is at the thickest part of the blade portion 201, which can ensure the structural strength of the second U-shaped clamp, have good impact resistance, and improve the overall fatigue resistance.

[0097] Furthermore, combined Figure 3 and Figure 4 The scissor assembly also includes a fixing rod 228, which is hollow to accommodate a connector 221. The fixing rod 228 has a third U-shaped clamp at one end near the blade section 201, and the two clamping arms of the third U-shaped clamp have fifth through holes. The blade section 201 has a sixth through hole 229 at the second blade tail corresponding to the first low platform 213. The second blade tails of the two blade sections 201 are clamped between the two clamping arms of the third U-shaped clamp, and the two blade sections 201 are hinged to the fixing rod 228 by the third connecting shaft 230 through the fifth through holes and the sixth through holes 229. The two blade sections 201 rotate around the third connecting shaft 230 and are driven by the connector 221 to achieve an open or closed state.

[0098] In this embodiment, the sixth through hole 229 simultaneously penetrates the first low platform 213 and the second high platform 217. That is, the second cutting tail where the sixth through hole 229 is located is at the part of the cutting blade 201 that corresponds to both the second high platform 217 and the first low platform 213. The second cutting tail is not the thinnest part, which can ensure the strength of the joint between the cutting blade 201 and the third U-shaped clamp, improve the impact resistance, and enhance the overall fatigue resistance.

[0099] As an optional implementation method, such as Figure 1 , Figure 2 , Figures 11 to 17 As shown, the second demolition assembly 30 includes a hammer assembly, and the hammer assembly has a quick-release connector 301 inside; the extension 102 includes an extension rod 1021 extending away from the working end 101, and the free end face of the extension rod is provided with a locking protrusion 302, which can lock into the quick-release connector 301.

[0100] The quick-release connector 301 and the locking protrusion 302 constitute a locking connection structure. When the quick-release connector 301 and the locking protrusion 302 are locked together, the connection between the hammer assembly and the extension rod can be locked; when the quick-release connector 301 and the locking protrusion 302 are released from the locking engagement, the connection between the hammer assembly and the extension rod can be unlocked.

[0101] In this embodiment, the locking protrusion 302 is fixed relative to the extension rod 1021, and the quick-release connector 301 is anti-loosening relative to the hammer assembly, thus facilitating the installation and disassembly of the hammer assembly.

[0102] As an optional implementation method, refer to Figures 11 to 17 The hammer assembly includes a first hammer head 303 and a hammer handle 304 connected together. The hammer handle 304 includes a mounting section 305 connected to the first hammer head 303 and a grip section 306 connected to the mounting section 305. The grip section 306 has a hollow structure and can be sleeved on the extension rod 1021.

[0103] The mounting section 305 is provided with a receiving hole 307 that communicates with the hollow structure to receive the locking protrusion 302. The side wall of the mounting section 305 forming the receiving hole 307 is provided with two opposing pin through holes 308.

[0104] The quick-release connector 301 includes a first pin 309 and a second pin 310 connected along the length direction. The radial dimension d1 of the first pin 309 is greater than the radial dimension d2 of the second pin 310. The quick-release connector 301 is provided with two pin through holes 308, and the first pin 309 and the second pin 310 extend into the receiving hole 307.

[0105] The locking protrusion 302 has a limiting groove 313 on its sidewall facing the two pins. When the quick-release connector 301 is pressed at different ends of the two pin through holes 308 (e.g., the cap ends of the first capped pin 311 and the second capped pin 312 described below), the quick-release connector 301 can move axially in the two pin through holes 308, so that the first pin 309 or the second pin 310 of the quick-release connector 301 corresponds to the limiting groove 313. Figure 16 As shown, both the locking direction L and the unlocking direction K are in the axial direction of the two pin holes 308, combined with Figure 13 and Figure 15Press the first capped pin 311 along the locking direction L. When the first pin 309 corresponds to the limiting groove 313, at least a portion of the first pin 309 is located within the limiting groove 313 to restrict the locking protrusion 302 from moving out of the receiving hole 307. Press the second capped pin 312 along the unlocking direction K. When the second pin 310 corresponds to the limiting groove 313, the second pin 310 is located outside the limiting groove 313 and has a gap with the limiting groove 313. The cap end of the second capped pin 312 is exposed outside the corresponding pin through hole so that the locking protrusion 302 can move out of the receiving hole 307.

[0106] In this embodiment, the hammer handle 304 of the hammer assembly is sleeved on the extension rod 1021 using the hollow structure of the grip section 306. The mounting section 305 of the hammer handle 304 is provided with a quick-release connector 301. When the quick-release connector 301 on the hammer handle 304 locks with the limiting groove 313 of the locking protrusion 302 on the free end face of the extension rod 1021, the hammer assembly is connected to the extension rod 1021. When the quick-release connector 301 on the hammer handle 304 is unlocked from the limiting groove 313 of the locking protrusion 302 on the free end face of the extension rod 1021, the hammer assembly can be detached from the extension rod 1021.

[0107] The radial dimension of the first pin 309 is greater than that of the second pin 310. For example, both the first pin 309 and the second pin 310 are circular pins, and the diameter of the first pin 309 is greater than that of the second pin 310. When moving along the length of the two pins, the first pin with the larger diameter can be used to lock with the limiting groove of the locking protrusion, and the second pin with the smaller diameter can be used to disengage from the limiting groove of the locking protrusion.

[0108] Both pin through holes 308 are connected to the receiving hole 307. When the quick-release connector 301 moves axially in the two pin through holes 308, when the first pin 309 contacts the limiting groove 313, the quick-release connector 301 locks with the locking protrusion 302, thereby locking the hammer assembly and the extension rod. When the first pin 309 disengages from the limiting groove 313 and the second pin 310 is located outside the limiting groove 313, the quick-release connector 301 disengages from the locking protrusion 302, thereby unlocking the hammer assembly and the extension rod.

[0109] As an optional implementation method, such as Figure 13As shown, the quick-release connector 301 includes a first capped pin 311, a second capped pin 312, and a compression spring (not shown). The first capped pin 311 and the second capped pin 312 extend into the receiving hole 307 through the pin through holes 308 and are connected. At least a portion of the pin of the first capped pin 311 is the first pin 309, and at least a portion of the pin of the second capped pin 312 is the second pin 310. The compression spring is sleeved on the second capped pin 312 and is located between the cap end of the second capped pin 312 and the corresponding pin through hole 308 of the second capped pin 312.

[0110] For example, refer to Figure 13 The first capped pin 311 has all its pins as first pin 309, and the second capped pin 312 has all its pins as second pin 310. Both the first capped pin 311 and the second capped pin 312 have cap ends, which are located at the ends of the two pin through holes 308 that are far apart from each other. Figure 12 Two capped pins pass through the pin through hole 308 and are connected in the receiving hole 307. The capped end of the capped pin forms a limit in the length direction of the pin. This design makes the quick-release connector 301 prevent from loosening relative to the second component.

[0111] As an optional implementation, a through-hole limiting seat 314 is also provided inside the pin through-hole 308 through which the second capped pin 312 passes. The second pin 310 is transitionally fitted with the through-hole of the through-hole limiting seat 314, and the compression spring is located between the cap end of the second capped pin 312 and the through-hole limiting seat 314. Figure 14 The compression spring is sleeved on the second pin 310 and located at spring position N.

[0112] In this application, the two pin through holes 308 connected to the receiving hole 307 can have the same size, while the radial dimension of the second pin 310 is smaller than that of the first pin 309. A through hole limiting seat 314 is provided in the pin through hole 308 through which the second capped pin 312 passes. The through hole limiting seat 314 and the second pin 310 are transitionally fitted, which allows the second pin 310 and the first pin 309 to have a high degree of coaxiality, facilitating the connection between the second capped pin 312 and the first capped pin 311; the transitionally fitted second pin There is a slight interference or clearance between the shaft 310 and the through-hole limiting seat 314, and there is an appropriate fastening force between the second pin 310 and the through-hole limiting seat 314. Thus, when the first pin 309 contacts the limiting groove 313, the setting of the through-hole limiting seat 314 makes the quick-release connector 301 and the locking protrusion 302 form a more stable connection. In addition, the through-hole size of the through-hole of the through-hole limiting seat 314 is smaller than the through-hole size of the pin through-hole 308, so that it can better cooperate with the cap end of the second capped pin 312 to limit the compression spring.

[0113] As an optional implementation, the free end of the first capped pin 311 is formed with an internal threaded hole of a predetermined length, and the free end of the second capped pin 312 is provided with a threaded section that matches the internal threaded hole. The first capped pin 311 and the second capped pin 312 are threadedly connected after extending into the receiving hole 307; and / or, the ends of the two pin through holes 308 that are far apart from each other are both recessed stepped holes.

[0114] Since the radial dimension of the first pin 309 is larger than the radial dimension of the second pin 310, all the pins of the first capped pin 311 are the first pin 309, and all the pins of the second capped pin 312 are the second pin 310. The free end of the second capped pin 312 is threadedly connected to the internal threaded hole of a predetermined length in the first capped pin 311, thereby realizing the anti-loosening of the quick-release connector 301 relative to the second component.

[0115] The ends of the two pin through holes 308, which are positioned far apart from each other, are recessed stepped holes. When part of the first pin 309 is located within the limiting groove 313 of the locking protrusion 302, the cap end of the first capped pin 311 is located within the recessed stepped hole of the pin through hole through which the first pin 309 passes. At this time, the cap end of the second capped pin 312 protrudes from the surface of the second component. (Refer to...) Figure 16 In the locked state, pressing the cap end of the second capped pin 312 along the unlocking direction K can release the locking relationship between the first pin 309 and the limiting groove 313 of the locking protrusion 302. The recessed step hole of the pin through hole corresponding to the second capped pin 312 provides the cap end of the second capped pin 312 with movement space.

[0116] As an optional implementation, the receiving hole 307 is a through hole, and its end away from the grip section 306 is provided with an internal thread section. The first hammer head 303 has a threaded connecting rod 320 of a predetermined length, and the threaded connecting rod 320 is threadedly connected to the receiving hole 307. When the quick-release connector 301 is locked with the locking protrusion 302, the free end face of the locking protrusion 302 abuts against the free end face of the threaded connecting rod 320.

[0117] In this embodiment, the hammer handle 304 is threadedly connected to the first hammer head 303, which facilitates the replacement of the hammer handle 304 or the first hammer head 303. When the quick-release connector 301 is locked in place with the locking protrusion 302, the threaded connecting rod 320 connected to the hammer handle 304 abuts against the free end face of the locking protrusion 302, which can form a fastening force on the locking protrusion 302 in the axial direction, thereby making the locking engagement between the quick-release connector 301 and the locking protrusion 302 more stable and the connection between the hammer assembly and the extension rod 1021 more reliable.

[0118] As an optional implementation, the first hammerhead 303 includes a striking part 315, a gripping part 316, and a nail-removing part 317. In the extending direction of the hammer handle 304, the gripping part 316 is connected to the mounting section 305, and the striking part 315 and the nail-removing part 317 are respectively connected to both sides of the gripping part 316. The gripping part 316 facilitates the operator's gripping of the hammer assembly, the striking part 315 is used for striking, and the nail-removing part 317 is used for prying and pulling out nails.

[0119] As an optional implementation, the extension rod 1021 is provided with a positioning groove 319, and the mounting section 305 is provided with a positioning pin hole 318 corresponding to the positioning groove 319. The through direction of the positioning pin hole 318 is consistent with the through direction of the pin shaft through hole 308. The hammer assembly also includes a positioning pin, which is inserted into the positioning pin hole 318 and extends into the positioning groove 319 to align with the quick-release connector 301 and the locking protrusion 302. In this embodiment, the positioning pin is inserted into the positioning pin hole 318 on the mounting section 305 of the hammer assembly and extends into the positioning groove 319 on the extension rod 1021, ensuring that the installation positions of the quick-release connector 301 and the locking protrusion 302 are precisely aligned; the through direction of the positioning pin hole 318 is consistent with the through direction of the pin shaft through hole 308, that is, the length direction of the positioning pin is consistent with the length direction of the first pin shaft 309 and the second pin shaft 310 in the quick-release connector 301. The radial constraint effect of the positioning pin can further improve the connection stability between the hammer assembly and the extension rod 1021.

[0120] As an optional implementation method, refer to Figures 18 to 21 The demolition team also includes a third demolition component 40, which is detachably connected to the first demolition component 20.

[0121] Specifically, the first demolition component 20 includes a cutting and spreading blade assembly, which includes two blade sections 201; the third demolition component 40 includes a hammer assembly, which includes a hammer body 41 and a locking connector 42, which detachably connects the cutting and spreading blade assembly and the hammer body 41. In this embodiment, the hammer assembly utilizes its built-in locking connector 42 to detachably connect the hammer body 41 to the cutting and spreading blade assembly, allowing the hammer assembly and the cutting and spreading blade assembly to be used in combination, thus adapting to complex demolition scenarios, such as demolition situations requiring not only cutting and spreading but also hammering.

[0122] In one optional implementation, the hammer body 41 includes a second hammerhead 411 and a hammerhead seat 412 connected to the second hammerhead 411. The locking connector 42 includes a locking part 43 and a connecting part 44. The connecting part 44 connects the blade part 201 and the hammerhead seat 412, and the locking part 43 is used to lock the connecting part 44. In this embodiment, the blade part 201 and the hammerhead seat 412 are connected respectively through the connecting part 44, and the locking part 43 locks the connecting part 44, thereby realizing the connection between the scissor-spreader assembly and the hammerhead seat 412.

[0123] As an optional implementation, the first end of the hammer head base 412 is connected to the second hammer head 411, and the second end forms two clamping arms 413. There is a clamping space between the two clamping arms 413 to accommodate the blade part 201. Each clamping arm 413 is provided with at least one first pin hole 414, and the scissor-expanding blade assembly is provided with at least one second pin hole.

[0124] The connecting part 44 includes at least one pin 441. The number of first pin holes 414 on each clamping arm 413, the number of second pin holes on the scissor assembly, and the number of pins 441 are the same. Each pin 441 passes through a corresponding first pin hole 414 on each clamping arm 413 and a corresponding second pin hole on the blade part 201. The locking part 43 includes a cap 431. The cap 431 is connected to one end of each pin 441 that extends out of one of the clamping arms 413 to lock each pin 441.

[0125] In this embodiment, the clamping space between the two clamping arms 413 of the hammer head seat 412 provides a receiving area for the scissor and spreader assembly. Within this clamping space, a part of the scissor and spreader assembly can correspond to the clamping arm 413. The pin 441 passes through the corresponding first pin hole 414 on the clamping arm 413 and the corresponding second pin hole on the scissor and spreader assembly. The cap 431 locks the pin 441, thereby realizing the connection between the hammer head seat 412 and the scissor and spreader assembly.

[0126] As an optional implementation, the locking part 43 can be magnetically connected to the hammer head base 412 to lock the connecting part 44. In this embodiment, the magnetic connection between the locking part 43 and the hammer head base 412 facilitates quick assembly and disassembly between the locking connector 42 and the hammer head base 412, avoiding wear on the locking connector 42 during repeated assembly and disassembly. The magnetic connection described in this application can specifically be a magnetic connection or a vacuum magnetic connection, etc.

[0127] As an optional implementation, at least one of the hammerhead base 412 and the locking part 43 is provided with a magnetic element. For example, one of the hammerhead base 412 and the locking part 43 is provided with a magnetic element, and the other is made of a magnetic metal material; or, both the hammerhead base 412 and the locking part 43 are provided with magnetic elements. Magnetic metal materials include, but are not limited to, iron-based alloy steel, nickel-based alloys, and other strongly magnetic materials.

[0128] As an optional implementation, the second end of the hammerhead base 412 forms two clamping arms 413, each clamping arm 413 is provided with at least two first pin holes, and the connecting member connects the blade part 201 and the hammerhead base 412 through the first pin holes. A magnet mounting countersunk hole 415 is provided between different first pin holes of at least one clamping arm 413, and a magnetic element is placed in the magnet mounting countersunk hole 415.

[0129] In this embodiment, each clamping arm 413 is provided with at least two first pin holes 414. The number of pins 441 connected to the cap 431 of the locking part 43 and the number of second pin holes on the cutting and spreading blade assembly are consistent with the number of first pin holes 414, thereby ensuring that the locking connector 42 can be firmly connected to the hammer head seat 412, thus realizing the connection between the hammer head seat 412 and the cutting and spreading blade assembly. (Refer to...) Figure 24 Each clamping arm 413 of the hammerhead holder 412 is provided with two first pin holes 414, and each blade part 201 of the corresponding shearing and spreading knife assembly is provided with a second pin hole. The cap 431 of the locking part 43 is connected to two pin shafts 441. The number of first pin holes 414, second pin holes and pin shafts 441 is appropriate and can play a stable connection and locking role.

[0130] In the embodiments of this application, the preferred magnetic component is a strong magnet. A strong magnet has good magnetic force, which can effectively achieve locking between the locking connector 42 and the hammer head base 412.

[0131] As an optional implementation, the locking part 43 is provided with a carrying handle 432. The carrying handle 432 facilitates the operator to pick up and put down the locking connector 42, thereby facilitating the connection and disassembly of the hammer body 41 and the shearing and spreading blade assembly.

[0132] As an optional implementation, the carrying handle 432 includes a base 433 and a grip ring 434 connected to the base 433. The base 433 is fixedly connected to the cap 431. The grip ring 434 is fixedly connected to the base 433, for example, by welding it upright to the base 433, making it convenient for the operator to directly grasp the grip ring 434. Alternatively, the grip ring 434 can be rotatably connected to the base 433, which reduces the space occupied by the grip ring 434 and also facilitates the operator to pick up and put down the locking connector 42 at a suitable angle.

[0133] As an optional implementation, the hammer body 41 includes a second hammer head 411 and a hammer head seat 412 connected to the second hammer head 411; wherein the working surface of the second hammer head 411 is perpendicular to the length direction of the hammer head seat 412; and / or, the second hammer head 411 and the hammer head seat 412 are integrally formed structures.

[0134] In this embodiment, the connection direction between the hammer body 41 and the shearing and spreading blade assembly is consistent with the length direction of the hammer head seat 412, the extension direction of the pin 441 is perpendicular to the length direction of the hammer head seat 412, and the working surface of the second hammer head 411 is perpendicular to the length direction of the hammer head seat 412. In this way, when the second hammer head 411 strikes in the connection direction between the hammer body 41 and the shearing and spreading blade assembly, the locking connector 42 can be prevented from falling off.

[0135] The second hammerhead 411 and the hammerhead base 412 are integrally formed, which can significantly improve the structural strength of the hammer body 41, making the impact force more concentrated and improving the hammering quality.

[0136] As an optional implementation method, refer to Figure 1 and Figure 22 The manual hydraulic demolition tool may also be equipped with a handle-type locking element 50. The handle-type locking element 50 includes a first fastener 51, a second fastener 52 with a handle, and a locking element 53. The first ends of the first fastener 51 and the second fastener 52 are hinged, and the second ends are connected via the locking element 53. Specifically, the locking element 53 can be a bolt, and the second ends of the first fastener 51 and the second fastener 52 are provided with threaded holes, thereby achieving a helical engagement through the threaded holes of the first fastener 51 and the second fastener 52 to lock the first fastener 51 and the second fastener 52. Figure 2 and Figure 3 A handle-type locking element 50 is fitted onto the side of the fixed rod 228 connected to the hydraulic pump 11. The handle-type locking element 50 facilitates the operator's access to and operation of the manual hydraulic demolition tool.

[0137] like Figure 23 and Figure 24 As shown in the embodiment of this application, the manual hydraulic device 10 includes a hydraulic pump 11, a directional valve 12, and a hydraulic cylinder 13. The hydraulic pump 11 is connected to the hydraulic cylinder 13 via the directional valve 12. It is understood that the hydraulic medium used in the manual hydraulic device 10 can be, but is not limited to, hydraulic oil. For ease of description, hydraulic oil will be used as an example below.

[0138] Hydraulic pump 11 is a radial piston pump. For details, please refer to... Figure 19 The hydraulic pump 11 includes a pump body, which is provided with a plunger cavity, an oil supply channel 112, an oil return channel (not shown) and an oil bladder 113. The plunger cavity accommodates the plunger 111. The oil supply channel 112 and the oil return channel are both connected to the oil bladder 113. The plunger cavity is connected to the side wall of the oil supply channel 112.

[0139] The oil supply channel 112 has an oil inlet port 114 and an oil outlet port 115 that are set far apart from each other in the direction of oil flow. The oil inlet port 114 is connected to the oil sac 113. The side wall of the oil supply channel 112 is provided with a side wall oil port 116 that is connected to the plunger cavity.

[0140] From the oil inlet port 114 to the oil outlet port 115, the oil supply channel 112 has a first stepped surface 137 and a second stepped surface 138 inside. The through-hole diameter of the second stepped surface 138 is larger than that of the first stepped surface 137. The side wall oil port 116 is located adjacent to the first stepped surface 137. Furthermore, the oil supply channel 112 also sequentially includes a first ball-shaped directional valve 117, a first spring (not shown), a second ball-shaped directional valve 118, and a second spring (not shown). The first spring presses the first ball-shaped directional valve 117 against the first stepped surface 137, and the second spring presses the second ball-shaped directional valve 118 against the second stepped surface 138. Preferably, the first ball-shaped directional valve 117 is a first steel ball, and the second ball-shaped directional valve 118 is a second steel ball.

[0141] When the hand lever 119 moves upward, it drives the plunger 111 to move upward. At this time, the first ball valve 117 opens and the second ball valve 118 seals, and oil is drawn into the plunger cavity. When the hand lever 119 moves downward, it drives the plunger 111 downward. At this time, the first ball valve 117 seals and the second ball valve 118 opens, and the oil in the plunger cavity flows to the hydraulic cylinder 13 through the directional valve 12.

[0142] In the embodiments of this application, the extension 102 can be a shell sleeved on the outside of the oil bladder 113, and the extension rod 1021 is part of the extension 102.

[0143] Furthermore, the hydraulic cylinder 13 includes a cylinder body, a piston body 131 disposed within the cylinder body, and a guide rod 132. The piston body 131 and the guide rod 132 are slidably engaged. The piston body 131 includes an integrally formed piston 133 and a piston rod 134. The inner cavity of the cylinder is divided by the piston body 131 into a first oil chamber 135 near the reversing valve 12 and a second oil chamber 136 away from the reversing valve 12, that is... Figure 19 The right side of the piston 133 is the first oil chamber 135, and the left side is the second oil chamber 136; the guide rod 132 supplies oil to the second oil chamber 136. The end of the piston rod 134 away from the reversing valve 12 is the working end 101 of the manual hydraulic device 10.

[0144] exist Figure 23 and Figure 24 When piston 133 is located at the leftmost position of the sliding path, the first oil chamber 135 is in its largest space state, and the second oil chamber 136 is in its smallest space state. When piston 133 slides to the right, the first oil chamber 135 gradually decreases, and the second oil chamber 136 gradually increases.

[0145] Furthermore, combined Figure 25The reversing valve 12 is a three-position four-way reversing valve, which includes an oil inlet P, an oil return port O, a first working oil port A and a second working oil port B. The oil inlet P is connected to the oil outlet port 115; the working oil port A is connected to the second oil chamber 136, and the working oil port B is connected to the first oil chamber 135.

[0146] Reference Figure 1 The reversing valve 12 is equipped with a reversing handle 121, which has three working positions: the middle position, 45° clockwise rotation, and 45° counterclockwise rotation. The reversing valve 12 determines whether the pressure oil from the plunger pump acts on the first oil chamber 135 or the second oil chamber 136. When the reversing handle 121 is in different working positions and the hand lever 119 is operated, the working process of the reversing valve 12 is as follows:

[0147] Reference Figure 25 (a) When the handle is stopped in the middle position, the oil inlet P is connected to the oil return port O, and the first working oil port A and the second working oil port B are both closed. At this time, the oil in the oil bladder 113 returns to the oil bladder 113 through the oil supply channel 112, the oil inlet P, the oil return port O, and the oil return channel.

[0148] Reference Figure 25 (b) When the handle is turned 45° clockwise, the oil inlet P is connected to the second working oil port B, and the oil return port O is connected to the first working oil port A. At this time, oil enters the first oil chamber 135, oil returns to the second oil chamber 136, and the piston body 131 moves away from the reversing valve 12, causing the blade part of the shearing and expanding knife assembly to open, which can perform expansion, slit opening, tearing and other actions.

[0149] Reference Figure 25 (c) When the handle is turned counterclockwise by 45°, the oil inlet P is connected to the first working oil port A, and the oil return port O is connected to the second working oil port B. At this time, oil enters the second oil chamber 136, oil returns to the first oil chamber 135, and the piston body 131 moves to the side where the reversing valve 12 is located, which drives the blade part of the shearing and spreading knife assembly to close and perform the shearing action.

[0150] like Figure 26 As shown, another embodiment of this application provides a manual hydraulic demolition tool, including: a manual hydraulic device 10 and a demolition tool assembly. The manual hydraulic device 10 has a working end 101 and an extension 102. The demolition tool assembly includes a first demolition component 20, a second demolition component 30, and a third demolition component 40 with different functions. The first demolition component 20 is a cutting and spreading knife assembly, the second demolition component 30 is a hammer assembly, and the third demolition component 40 is a hammer assembly. The cutting and spreading knife assembly is detachably connected to the working end 101, and the working end 101 drives the cutting and spreading knife assembly to perform demolition actions. The hammer assembly is detachably connected to the extension 102. The cutting and spreading knife assembly includes two hinged blade portions 201, and the hammer assembly is detachably connected to the two blade portions 201.

[0151] The difference from the previous embodiment is that the demolition tool set in this embodiment includes a shearing and spreading blade assembly, a hammer assembly, and a hammer assembly. The remaining structures are the same as in the previous embodiment and will not be described again here. The manual hydraulic demolition tool provided in this embodiment integrates functions such as expansion, shearing, tearing, slit opening, impact, hammering, and prying, making the manual hydraulic demolition tool multi-purpose and suitable for complex demolition scenarios.

[0152] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 application and 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 application.

[0153] Furthermore, the terms "first" and "second" in this application 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 application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0154] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A manual hydraulic demolition tool, characterized in that, include: A manual hydraulic device and a demolition tool set are provided. The manual hydraulic device has a working end and an extension. The demolition tool set includes a first demolition component and a second demolition component. The first demolition component is detachably connected to the working end. The manual hydraulic device can drive the first demolition component to perform demolition actions through the working end. The second demolition component is detachably connected to the extension.

2. The manual hydraulic demolition tool according to claim 1, characterized in that, The first demolition assembly includes a cutting and spreading blade assembly, which includes two hinged blade portions, each blade portion having a shearing edge; Along the axial direction of the hinge axis of the two blade portions, a clearance groove is provided on the side of the blade portion facing away from the shearing blade; When the two blade sections are in a closed state, the shearing edge of one blade section is located in the clearance groove of the other blade section so that the two blade sections are aligned.

3. The manual hydraulic demolition tool according to claim 2, characterized in that, The blade tip is provided with an auxiliary blade. The blade surface of the auxiliary blade located on one side of the shearing blade is the first blade surface, and the blade surface of the auxiliary blade located on the back of the blade is the second blade surface. The first blade surface and the second blade surface of the auxiliary blade are connected at an acute angle.

4. The manual hydraulic demolition tool according to claim 1, characterized in that, The second demolition assembly includes a hammer assembly, and the hammer assembly has a quick-release connector inside; The extension includes an extension rod extending away from the working end, and the free end face of the extension rod is provided with a locking protrusion, which can be locked into the quick-release connector. Specifically, when the quick-release connector engages with the locking protrusion, it can lock the connection between the extension rod and the hammer assembly; when the quick-release connector disengages from the locking protrusion, it can unlock the connection between the extension rod and the hammer assembly.

5. The manual hydraulic demolition tool according to claim 4, characterized in that, The hammer assembly includes a first hammer head and a hammer handle connected together. The hammer handle includes a mounting section connected to the first hammer head and a grip section connected to the mounting section. The grip section has a hollow structure and can be fitted onto the extension rod. The mounting section is provided with a receiving hole that communicates with the hollow structure to accommodate the locking protrusion, and the side wall of the mounting section forming the receiving hole is provided with two opposing pin through holes. The quick-release connector includes a first pin and a second pin arranged along the length direction. The radial dimension of the first pin is larger than that of the second pin. The quick-release connector passes through the two pin through holes, and the first pin and the second pin are located in the receiving hole. The locking protrusion has a limiting groove on the side wall facing the two pins. When the quick-release connector is pressed at different ends corresponding to the two pin through holes, the quick-release connector can move axially in the two pin through holes so that the first pin or the second pin of the quick-release connector corresponds to the limiting groove. When the first pin corresponds to the limiting groove, at least a portion of the first pin is located in the limiting groove to restrict the locking protrusion from moving out of the receiving hole. When the second pin corresponds to the limiting groove, the second pin is located outside the limiting groove so that the locking protrusion can move out of the receiving hole.

6. The manual hydraulic demolition tool according to claim 5, characterized in that, The quick-release connector includes a first capped pin, a second capped pin, and a compression spring. The first capped pin and the second capped pin extend into the receiving hole through the pin through hole and are connected. At least a portion of the pin of the first capped pin is the first pin, and at least a portion of the pin of the second capped pin is the second pin. The compression spring is sleeved on the second capped pin and is located between the cap end of the second capped pin and the corresponding pin through hole of the second capped pin.

7. The manual hydraulic demolition tool according to claim 1, characterized in that, The demolition tool set also includes a third demolition component, which is detachably connected to the first demolition component.

8. The manual hydraulic demolition tool according to claim 7, characterized in that, The first demolition assembly includes a cutting and spreading blade assembly, which includes two blade sections; the third demolition assembly includes a hammer assembly, which includes a hammer body and a locking connector, which can detachably connect the two blade sections and the hammer body.

9. The manual hydraulic demolition tool according to claim 8, characterized in that, The hammer body includes a second hammerhead and a hammerhead seat connected to the second hammerhead. The locking connector includes a locking part and a connecting part. The connecting part connects the blade part and the hammerhead seat. The locking part is used to lock the connecting part. The locking part can be magnetically connected to the hammer head seat to lock the connecting part; and / or, The first end of the hammerhead seat is connected to the second hammerhead, and the second end forms two clamping arms. There is a clamping space between the two clamping arms to accommodate the blade portion. Each clamping arm is provided with at least one first pin hole, and the blade portion is provided with at least one second pin hole. The connecting part includes at least one pin shaft. The number of first pin holes on each clamping arm, the number of second pin holes on the blade portion, and the number of pin shafts are the same. Each pin shaft passes through the corresponding first pin hole of each clamping arm and the corresponding second pin hole on the blade portion. The locking part includes a cap. The cap is connected to one end of each pin shaft that extends out of one of the clamping arms to lock each pin shaft.

10. The manual hydraulic demolition tool according to claim 9, characterized in that, The second end of the hammerhead base has two clamping arms, each clamping arm having at least two first pin holes. The connector connects the blade part and the hammerhead base through the first pin holes. At least one clamping arm has a magnet mounting countersunk hole between different first pin holes. A magnetic component is placed in the magnet mounting countersunk hole to achieve the adsorption connection.

11. The manual hydraulic demolition tool according to claim 1, characterized in that, The manual hydraulic device includes a hydraulic pump, a directional valve, and a hydraulic cylinder. The hydraulic pump is connected to the hydraulic cylinder via the directional valve. The hydraulic pump is a single-stage radial piston pump.

12. The manual hydraulic demolition tool according to claim 11, characterized in that, The hydraulic pump includes an oil bladder, an oil supply channel, an oil return channel, a plunger chamber, and a plunger. The oil supply channel and the oil return channel are both connected to the oil bladder. The plunger chamber is connected to the side wall of the oil supply channel, and the plunger is located inside the plunger chamber. The extension is sleeved on the outside of the oil bladder.

13. The manual hydraulic demolition tool according to claim 1, characterized in that, It also includes a handle-type locking component, which includes a first fastener, a second fastener with a handle, and a locking component. The first ends of the first fastener and the second fastener are hinged together, and the second ends are connected through the locking component.

14. A manual hydraulic demolition tool, characterized in that, The device includes a manual hydraulic device and a demolition tool set. The manual hydraulic device has a working end and an extension that are positioned far apart from each other. The demolition tool set includes a cutting and spreading blade assembly, a hammer assembly, and a hammer assembly. The cutting and spreading blade assembly is detachably connected to the working end, and the working end drives the cutting and spreading blade assembly to perform demolition actions. The hammer assembly is detachably connected to the extension. The cutting and spreading blade assembly includes two hinged blade sections, and the hammer assembly is detachably connected to the two blade sections.

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