Demolition tool

Abstract

The present application discloses a demolition tool, comprising: a power member, including an output shaft; a plunger pair, located on the peripheral side of the output shaft; the plunger pair includes a liquid inlet, a liquid outlet and a first oil storage chamber; an oil cylinder, a movable piston is provided in the oil cylinder, and the inner chamber of the oil cylinder is divided into a first chamber and a second chamber separated by the piston; the first chamber has a first oil inlet and a first oil outlet, the second chamber has a second oil inlet and a second oil outlet, the liquid outlet is connected to the first oil inlet or the second oil inlet, and the first oil outlet and the second oil outlet are both connected to the first oil storage chamber; the moving direction of the piston is the same as the extension direction of the output shaft; an oil storage member, including a second oil storage chamber for storing oil, at least part of the second oil storage chamber is located on the peripheral side of the power member and / or the oil cylinder; the liquid inlet and the second oil storage chamber are connected; a working head is connected to the end of the piston away from the oil storage member. The demolition tool provided by the present application does not need to be connected to a power mechanism separately, is simple to operate, and is compact and light.

Description

Technical Field

[0001] This application relates to the technical field of rescue equipment, and particularly to a demolition tool. Background Art

[0002] The description in this section only provides background information related to the disclosure of this specification, and does not constitute prior art.

[0003] Demolition tools are mainly used by fire departments, traffic police, and armed police forces in cases of fires, earthquakes, car accidents, and commando rescues to quickly demolish and remove obstacles such as anti-theft window railings, collapsed building steel bars, and window bars.

[0004] However, existing demolition tools often require an external power mechanism during use, which not only complicates the operation but also occupies a large amount of space, making it unfavorable for the smooth progress of rescue work.

[0005] It should be noted that the above introduction of the technical background is only for the purpose of clearly and completely explaining the technical solutions of this specification and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art section of this specification. Summary of the Invention

[0006] The main technical problem to be solved by this application is to provide a demolition tool that does not require an additional connection to a power mechanism, is easy to operate, and is small and portable.

[0007] To solve the above technical problem, one technical solution adopted by this application is: to provide a demolition tool, comprising:

[0008] A power member, the power member includes an output shaft;

[0009] A plunger pair located on the periphery of the output shaft, the output shaft is used to drive the plunger pair; the plunger pair includes a liquid inlet part, a liquid outlet part, and a first oil storage cavity;

[0010] An oil cylinder located on the side of the power member away from the plunger pair; a movable piston is provided in the oil cylinder, and the inner cavity of the oil cylinder is separated by the piston into a first chamber and a second chamber that are isolated from each other. The second chamber is located at the end of the first chamber away from the power member; the first chamber has a first oil inlet and a first oil outlet, the second chamber has a second oil inlet and a second oil outlet, the liquid outlet part is connected to the first oil inlet or the second oil inlet, and both the first oil outlet and the second oil outlet are connected to the first oil storage cavity; the moving direction of the piston is the same as the extending direction of the output shaft;

[0011] An oil storage member, the oil storage member comprises a second oil storage chamber for storing oil, at least part of the second oil storage chamber is located on the peripheral side of the power member and / or the oil cylinder; the liquid inlet portion is connected to the second oil storage chamber;

[0012] A working head is connected to an end of the piston away from the oil storage member.

[0013] Furthermore, the second oil storage chamber is located on the peripheral side of the power member and the oil cylinder.

[0014] Furthermore, the demolition tool also includes a hand-held portion, which is annular and located on the circumference of the cylinder.

[0015] Furthermore, at least one limiting portion is provided on a surface of the hand-held portion facing away from the oil cylinder, and the limiting portion includes a limiting plane.

[0016] Furthermore, the demolition tool also includes a reversing valve, which is located on the side of the output shaft away from the oil cylinder, and the reversing valve is used to control the connection between the liquid outlet and the first oil inlet, or the connection between the liquid outlet and the second oil inlet.

[0017] Furthermore, the axes of the reversing valve, the power member, the output shaft and the oil cylinder are on the same straight line.

[0018] Furthermore, the demolition tool also includes a reversing handle for controlling the reversing valve; the reversing handle is located on a side of the reversing valve away from the output shaft.

[0019] Further, the plunger pair includes an integrated high-pressure plunger pump, a low-pressure plunger pump and a conversion valve; the high-pressure plunger pump includes a first rod body, a first liquid inlet and a first liquid outlet, and the low-pressure plunger pump includes a second rod body, a second liquid inlet and a second liquid outlet; the diameter of the second rod body is greater than the diameter of the first rod body, and the length of the second rod body is equal to the length of the first rod body; the first rod body and the second rod body are arranged in parallel, the first rod body and the output shaft are arranged vertically, and the output shaft is used to drive the first rod body and the second rod body simultaneously;

[0020] The plunger pair is provided with a liquid outlet channel, the liquid outlet portion is connected with the first liquid outlet and the second liquid outlet through the liquid outlet channel, and the conversion valve is arranged on the liquid outlet channel; the liquid inlet portion includes the first liquid inlet and the second liquid inlet.

[0021] Furthermore, the power component includes a motor, and the motor is located between the output shaft and the cylinder; the demolition tool also includes a detachable battery, and the battery is located on the peripheral side of the power component, and the battery is used to power the motor.

[0022] Further, a coupling is provided between the working head and the piston, and the working head includes one or more of a shearing head, an expanding head, and a shearing and expanding head.

[0023] Different from the prior art, the beneficial effects of this application are as follows: The demolition tool provided by the implementation mode of this application not only includes a working head and an oil cylinder, but also includes a power component, a plunger pair, and an oil storage component for providing power to the oil cylinder. Therefore, this demolition tool does not need to be additionally connected to a power mechanism, and the operation is simple. Moreover, the moving direction of the piston of this demolition tool is the same as the extending direction of the output shaft, and at least part of the second oil storage cavity of the oil storage component is located on the periphery of the power component and / or the oil cylinder, which can make the layout of the entire structure more reasonable and make the demolition tool have the advantages of being small, light, and portable. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0025] Figure 1 It is a schematic internal structure diagram of the first demolition tool provided in this implementation mode;

[0026] Figure 2 is Figure 1 a three-dimensional structure diagram of;

[0027] Figure 3 It is a schematic internal structure diagram of the second demolition tool provided in this implementation mode;

[0028] Figure 4 is Figure 3 a three-dimensional structure diagram of;

[0029] Figure 5 It is a schematic internal structure diagram of the third demolition tool provided in this implementation mode;

[0030] Figure 6 is Figure 5 a three-dimensional structure diagram of;

[0031] Figure 7 It is a schematic structure diagram of a plunger pair provided in this implementation mode.

[0032] Explanation of the Reference Numerals in the Drawings:

[0033] 1. High-pressure plunger pump; 2. Low-pressure plunger pump; 3. Liquid outlet flow channel; 31. First section; 32. Second section; 4. First valve body; 5. Second valve body; 6. First rod body; 7. Second rod body; 8. Return spring; 9. First mounting shell; 10. Second mounting shell; 11. Fourth valve body; 12. Fifth valve body; 13. Sixth valve body;

[0034] 14. Motor; 15. Output shaft; 16. Power component; 17. Plunger pair; 18. Oil cylinder; 19. Piston; 20. First chamber; 21. Second chamber; 22. Oil storage component; 23. Second oil storage chamber; 24. Working head; 25. Holding part; 26. Limiting part; 27. Directional valve; 28. Directional handle; 29. Battery; 30. Coupling; 33. Center line; 34. Lighting mechanism; 35. Power switch; 36. Battery level display module; 37. Pump body; 38. First oil storage chamber; X. First direction. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0036] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be another intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of the embodiments of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] Please refer to Figures 1 to 6 This embodiment of the present application provides a demolition tool, including a power component 16, a plunger pair 17, an oil cylinder 18, an oil storage component 22 and a working head 24.

[0039] Among them, the power component 16 includes an output shaft 15. The plunger pair 17 is located on the circumferential side of the output shaft 15, and the output shaft 15 is used to drive the plunger pair 17. The plunger pair 17 includes a liquid inlet part, a liquid outlet part, and a first oil storage cavity 38. The oil cylinder 18 is located on the side of the power component 16 away from the plunger pair 17. A movable piston 19 is provided in the oil cylinder 18, and the inner cavity of the oil cylinder 18 is separated by the piston 19 into a separated first chamber 20 and a second chamber 21. The second chamber 21 is located at one end of the first chamber 20 away from the power component 16. The first chamber 20 has a first oil inlet and a first oil outlet. The second chamber 21 has a second oil inlet and a second oil outlet. The liquid outlet part of the plunger pair 17 is communicated with the first oil inlet or the second oil inlet. Both the first oil outlet and the second oil outlet are communicated with the first oil storage cavity 38. The moving direction of the piston 19 is the same as the extending direction of the output shaft 15. The oil storage component 22 includes a second oil storage cavity 23 for storing oil, and at least part of the second oil storage cavity 23 is located on the circumferential side of the power component 16 and / or the oil cylinder 18. The liquid inlet part is communicated with the second oil storage cavity 23. The working head 24 is connected to the end of the piston 19 away from the oil storage component 22.

[0040] The demolition tool provided by the embodiment of the present application not only includes the working head 24 and the oil cylinder 18, but also includes the power component 16, the plunger pair 17 and the oil storage component 22 for providing power for the oil cylinder 18. Therefore, this demolition tool does not need to be additionally connected to a power mechanism, and the operation is simple. Moreover, the moving direction of the piston 19 of this demolition tool is the same as the extending direction of the output shaft 15, and at least part of the second oil storage cavity 23 of the oil storage component 22 is located on the circumferential side of the power component 16 and / or the oil cylinder 18, which can make the layout of the whole structure more reasonable, and make the demolition tool have the advantages of being small and light.

[0041] In this embodiment, the working head 24 and the piston 19 can be connected by a coupling 30. The working head 24 can include one or more of a shearing head, an expanding head, and a combined shearing and expanding head. As Figure 1 and Figure 2 shown, the working head 24 is a shearing head; as Figure 3 and Figure 4 shown, the working head 24 is an expanding head; as Figure 5 and Figure 6 shown, the working head 24 is a combined shearing and expanding head.

[0042] The piston 19 can move in the inner cavity of the oil cylinder 18 in the direction close to or away from the working head 24. When the piston 19 moves in the direction close to the working head 24 (i.e., the horizontally left direction in Figure 1 , Figure 3 and Figure 5 ), the working head 24 gradually closes; when the piston 19 moves in the direction away from the working head 24 (i.e., the horizontally right direction in Figure 1 , Figure 3 and Figure 5When moving in the horizontal right direction, the working head 24 gradually opens.

[0043] Specifically, the plunger pair 17 can transport the liquid in the second oil storage chamber 23 to the first chamber 20 or the second chamber 21, thereby driving the piston 19 to move in a direction close to the working head 24 or away from the working head 24. For example, when the plunger pair 17 inputs liquid to the first oil inlet of the first chamber 20 through the liquid outlet, the piston 19 is pushed to move in a direction close to the working head 24, and the liquid in the second chamber 21 is discharged into the first oil storage chamber 38 through the second oil outlet; when the plunger pair 17 inputs liquid to the second oil inlet of the second chamber 21 through the liquid outlet, the piston 19 is pushed to move in a direction away from the working head 24, and the liquid in the first chamber 20 is discharged into the first oil storage chamber 38 through the first oil outlet.

[0044] In this embodiment, if Figure 1 , Figure 3 and Figure 5 As shown, since the second oil storage chamber 23 needs to be connected to the liquid inlet of the plunger pair 17, the second oil storage chamber 23 is located on the peripheral side of the power member 16 and the oil cylinder 18, which can make the overall structure of the demolition tool more compact and the demolition tool more compact and lightweight. The second oil storage chamber 23 also has a portion located between the power member 16 and the oil cylinder 18, so that the second oil storage chamber 23 is roughly "H"-shaped, which can make the structure of the oil storage member 22 more stable and strong. The oil storage member 22 in this embodiment can be an oil bag.

[0045] In this embodiment, the rescue tool may further include a handheld portion 25. The handheld portion 25 is annular and is located on the circumference of the oil cylinder 18. The handheld portion 25 can be grasped from 360°, so that the operator can take the rescue tool at any angle, making the operation more convenient.

[0046] Specifically, the hand-held part 25 is fixedly connected to the end of the oil cylinder 18 away from the oil storage part 22. The surface of the hand-held part 25 away from the oil cylinder 18 is provided with at least one limiting part 26, and the limiting part 26 includes a limiting plane. The limiting part 26 can prevent the demolition tool from rolling after being placed. Preferably, as Figure 6 As shown, a limiting portion 26 is provided on each of the upper surface and the lower surface of the handle portion 25. In other embodiments, four limiting portions 26 may be provided on the outer surface of the handle portion 25, and the intervals between adjacent limiting portions 26 are equal.

[0047] In this embodiment, the demolition tool may further include a reversing valve 27. The reversing valve 27 is located on the side of the output shaft 15 away from the oil cylinder 18. The reversing valve 27 is used to control the communication between the liquid outlet part and the first oil inlet, or the communication between the liquid outlet part and the second oil inlet, that is, the outlet communicating with the liquid outlet part of the plunger pair 17 can be changed through the reversing valve 27. If the liquid outlet part communicates with the first oil inlet, the piston 19 can move towards the working head 24; if the liquid outlet part communicates with the second oil inlet, the piston 19 can move away from the working head 24.

[0048] Preferably, the axes of the reversing valve 27, the power member 16, the output shaft 15 and the oil cylinder 18 are on the same straight line, that is Figure 1 , Figure 3 and Figure 5 the center line 33 in, so that the structure of the demolition tool can be more compact and lightweight.

[0049] Specifically, the demolition tool may further include a reversing handle 28. By rotating the reversing handle 28, the reversing valve 27 can be controlled, so as to switch the communication between the liquid outlet part and the first oil inlet or the second oil inlet. Among them, the reversing handle 28 is located on the side of the reversing valve 27 away from the output shaft 15, that is Figures 1 to 6 the rightmost side in.

[0050] In this embodiment, the power member 16 may include a motor 14, and the motor 14 is located between the output shaft 15 and the oil cylinder 18. The demolition tool may further include a detachable battery 29, and the battery 29 is used to supply power to the motor 14. Preferably, the battery 29 is located on the periphery of the power member 16, which is convenient for the disassembly and assembly of the battery 29 and provides great convenience for the operation.

[0051] Preferably, as Figure 2 , Figure 4 and Figure 6 shown, a lighting mechanism 34 may be provided between the handheld part 25 and the working head 24, so that this demolition work can be carried out in a dark or insufficient light environment. As Figure 6 shown, a power switch 35 and a power quantity display module 36 may be provided on the side of the power member 16 facing away from the battery 29. The power switch 35 is used to control the start and stop of the motor 14, and the power quantity display module 36 can display the power quantity of the battery 29, which is convenient for the operator to replace the battery 29 in time.

[0052] In this embodiment, the demolition tool may include a plurality of plunger pairs 17, and the plurality of plunger pairs 17 are evenly distributed along the circumferential direction of the output shaft 15, so as to further improve the efficiency of the demolition tool. Among them, the output shaft 15 is an eccentric shaft, so when the output shaft 15 rotates, it can contact each plunger pair 17 in turn, so as to drive each plunger pair 17 in turn.

[0053] Specifically, as Figure 7As shown, the plunger pair 17 includes a high-pressure plunger pump 1, a low-pressure plunger pump 2 and a switching valve which are integrally arranged. Among them, the high-pressure plunger pump 1 includes a first rod body 6, a first liquid inlet and a first liquid outlet. The low-pressure plunger pump 2 includes a second rod body 7, a second liquid inlet and a second liquid outlet. The diameter of the second rod body 7 is larger than that of the first rod body 6, and the length of the second rod body 7 is equal to that of the first rod body 6. The first rod body 6 and the second rod body 7 are arranged in parallel. The first rod body 6 and the second rod body 7 are arranged in alignment. The first rod body 6 is perpendicular to the output shaft 15, and the output shaft 15 is used to drive the first rod body 6 and the second rod body 7 simultaneously. Since the diameter of the second rod body 7 is larger than that of the first rod body 6, the length of the second rod body 7 is equal to that of the first rod body 6, and the first rod body 6 and the second rod body 7 are arranged in alignment, the flow rate output by the high-pressure plunger pump 1 is less than that output by the low-pressure plunger pump 2.

[0054] The plunger pair 17 is provided with a liquid outlet flow channel 3. The liquid outlet part is connected to the first liquid outlet and the second liquid outlet through the liquid outlet flow channel 3, and the switching valve is arranged on the liquid outlet flow channel 3. The liquid inlet part includes a first liquid inlet and a second liquid inlet. By integrally arranging the high-pressure plunger pump 1, the low-pressure plunger pump 2 and the switching valve, the installation space can be saved, and oil leakage and internal pressure leakage can also be avoided. The switching valve may include a first valve body 4 and a second valve body 5. The first valve body 4 is located in the liquid outlet flow channel 3. The second valve body 5 is communicated with the second liquid outlet, and the state of the second valve body 5 is opposite to that of the first valve body 4. The switching valve may further include a third valve body (not shown in the figure), and the third valve body is communicated with the first liquid outlet.

[0055] Specifically, when the pressure required by the working head 24 is lower than the first predetermined value, the second valve body 5 is closed and the first valve body 4 is opened, and the liquid at the second liquid outlet can flow into the oil cylinder 18; when the pressure required by the working head 24 is higher than the first predetermined value, the second valve body 5 is opened and the first valve body 4 is closed, and the liquid at the second liquid outlet flows out from the second valve body 5 to the first oil storage cavity 38 and cannot enter the oil cylinder 18. When the pressure required by the working head 24 is lower than the second predetermined value (the second predetermined value is greater than the first predetermined value), the third valve body is closed, and the liquid at the first liquid outlet can flow into the oil cylinder 18; when the pressure required by the working head 24 is higher than the second predetermined value, the third valve body is opened, and the liquid at the first liquid outlet flows out from the third valve body to the first oil storage cavity 38 and cannot enter the oil cylinder 18.

[0056] More specifically, the first liquid inlet (not shown) and the second liquid inlet (not shown) are oriented in the same direction, thereby optimizing the structure of the electric pump and reducing its installation space. A reset spring 8 may be provided axially on the outer sides of the first rod body 6 and the second rod body 7 to help the first rod body 6 and the second rod body 7 to reset. The high-pressure plunger pump 1 includes a first mounting shell 9, and the low-pressure plunger pump 2 includes a second mounting shell 10. The first rod body 6, the first liquid inlet and the first liquid outlet are located in the first mounting shell 9, and the second rod body 7, the second liquid inlet and the second liquid outlet are located in the second mounting shell 10. The first liquid inlet and the first liquid outlet are located on one side of the axial direction of the first rod body 6, and the second liquid inlet and the second liquid outlet are located on one side of the axial direction of the second rod body 7. Since the first rod body 6 and the second rod body 7 are aligned, the first liquid inlet, the first liquid outlet, the second liquid inlet and the second liquid outlet are respectively located on the same side of the first rod body 6 and the second rod body 7 along the axial direction.

[0057] In this embodiment, the first mounting shell 9 and the second mounting shell 10 are arranged along the first direction X. The first direction X is parallel to the axial direction of the output shaft 15. In the direction perpendicular to the first direction X and perpendicular to the axial direction of the first rod body 6, the plunger pair 17 has a first side and a second side (not shown) opposite to each other. The second mounting shell 10 is provided with a first outlet and a second outlet (not shown) on the first side and the second side, respectively. The first mounting shell 9 is provided with a third outlet (not shown) on the side away from the second mounting shell 10 in the first direction X. The liquid outlet channel 3 is connected to the second liquid outlet through the first outlet, the liquid outlet channel 3 is connected to the second liquid outlet through the third outlet, and the second valve body 5 is connected to the second liquid outlet through the second outlet. The liquid outlet channel 3 can be roughly L-shaped, that is, the liquid outlet channel 3 has at least a first section 31 extending along the first direction X, and a second section 32 extending in the direction from the first side to the second side (perpendicular to the first direction X), so that the high-pressure plunger pump 1 and the low-pressure plunger pump 2 can be connected as one.

[0058] Specifically, a fourth valve body 11 may be provided between the liquid outlet channel 3 and the oil cylinder 18, and the fourth valve body 11 may be located between the first liquid outlet and the first valve body 4. A fifth valve body 12 may be provided between the first liquid inlet and the second oil storage chamber 23, and a sixth valve body 13 may be provided between the second liquid inlet and the second oil storage chamber 23. The fifth valve body 12 and the sixth valve body 13 are oriented parallel to the extension direction of the first rod body 6.

[0059] In this embodiment, the first valve body 4, the second valve body 5, the third valve body, the fourth valve body 11, the fifth valve body 12, and the sixth valve body 13 are all one-way valves. The first valve body 4 only allows the liquid to flow from the second liquid outlet to the first liquid outlet. The second valve body 5 only allows the liquid to flow out from the second liquid outlet. The third valve body only allows the liquid to flow out from the first liquid outlet. The fourth valve body 11 only allows the liquid to flow out from the liquid outlet channel 3. The fifth valve body 12 only allows the liquid to flow into the first liquid inlet. The sixth valve body 13 only allows the liquid to flow into the second liquid inlet. Among them, the fifth valve body 12 and the sixth valve body 13 can be used as oil suction valves, and the fourth valve body 11 can be used as an oil outlet valve. The third valve body can be used as a high-pressure overflow valve.

[0060] In a specific application scenario, the oil in the second oil storage cavity 23 enters the high-pressure plunger pump 1 through the fifth valve body 12, is pressed into the fourth valve body 11 by the first rod body 6 and enters the oil cylinder 18. At the same time, the oil in the second oil storage cavity 23 enters the low-pressure plunger pump 2 through the sixth valve body 13, is extruded by the second rod body 7, passes through the first valve body 4 of the liquid outlet channel 3, converges with the liquid flowing out from the first liquid outlet, enters the fourth valve body 11 and then enters the oil cylinder 18. At this time, the pressure value provided by the electric pump is less than the first predetermined value.

[0061] When the pressure value required by the working head 24 rises to the first predetermined value (i.e., the rated pressure of the second valve body 5), the first valve body 4 closes, so that the liquid flowing out from the second liquid outlet cannot converge with the liquid flowing out from the first liquid outlet, and the second valve body 5 opens. At this time, the liquid flowing out from the second liquid outlet will flow into the first oil storage cavity 38. At this time, the pressure value provided by the electric pump is greater than the first predetermined value and less than the second predetermined value.

[0062] If the pressure value of the equipment continues to rise and reaches the second predetermined value (i.e., the set value of the third valve body), the third valve body opens, and the excess pressure flow will also flow into the first oil storage cavity 38.

[0063] In this embodiment, the demolition tool may further include a pump body 37, and the plunger pair 17 is installed on the pump body 37. Specifically, the pump body 37 is located between the motor 14 and the reversing valve 27, and the center of the pump body 37 is also located on the center line 33.

[0064] It should be noted that in the description of this specification, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no sequence between the two, nor can it be understood as indicating or implying relative importance. In addition, in the description of this specification, unless otherwise specified, the meaning of "a plurality" is two or more.

[0065] The use of the terms "comprising" or "including" to describe a combination of elements, components, parts or steps herein also contemplates embodiments consisting essentially of these elements, components, parts or steps. By using the term "may" herein, it is intended that any of the attributes described as "may" include are optional.

[0066] A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step can be separated into a plurality of discrete elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, component, part or step does not preclude other elements, components, parts or steps.

[0067] The above are only embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present application.

Claims

1. A demolition tool, characterized in that, include: A power part, the power part comprising an output shaft and a motor; A plunger pair, located on the peripheral side of the output shaft, and the output shaft is used to drive the plunger pair; The plunger pair comprises a liquid inlet portion, a liquid outlet portion and a first oil storage chamber; A cylinder is located at a side of the power member away from the plunger pair; a movable piston is arranged in the cylinder, and the inner cavity of the cylinder is divided into a first chamber and a second chamber which are isolated from each other by the piston, and the second chamber is located at an end of the first chamber away from the power member; the first chamber has a first oil inlet and a first oil outlet, and the second chamber has a second oil inlet and a second oil outlet, the liquid outlet is connected to the first oil inlet or the second oil inlet, and the first oil outlet and the second oil outlet are both connected to the first oil storage chamber; the motor is located between the output shaft and the cylinder, and the moving direction of the piston is the same as the extending direction of the output shaft; An oil storage member, the oil storage member comprising a second oil storage chamber for storing oil, the second oil storage chamber being located around the power member and the oil cylinder; the liquid inlet portion being in communication with the second oil storage chamber; A working head connected to an end of the piston away from the oil storage member; The demolition tool also includes a detachable battery, which is located on the peripheral side of the power component and is used to supply power to the motor.

2. The demolition tool according to claim 1, characterized in that, The demolition tool also includes a hand-held portion, which is annular and located on the peripheral side of the oil cylinder.

3. The demolition tool according to claim 2, characterized in that, At least one limiting portion is disposed on a surface of the hand-held portion facing away from the oil cylinder, and the limiting portion includes a limiting plane.

4. The demolition tool according to claim 1, characterized in that, The demolition tool also includes a reversing valve, which is located on the side of the output shaft away from the oil cylinder, and is used to control the liquid outlet to be connected to the first oil inlet, or the liquid outlet to be connected to the second oil inlet.

5. The demolition tool according to claim 4, characterized in that, The axes of the reversing valve, the power member, the output shaft and the oil cylinder are on the same straight line.

6. The demolition tool according to claim 4, characterized in that, The demolition tool also includes a reversing handle for controlling the reversing valve; the reversing handle is located on a side of the reversing valve away from the output shaft.

7. The demolition tool according to claim 1, characterized in that, The plunger pair comprises an integrated high-pressure plunger pump, a low-pressure plunger pump and a conversion valve; the high-pressure plunger pump comprises a first rod body, a first liquid inlet and a first liquid outlet, and the low-pressure plunger pump comprises a second rod body, a second liquid inlet and a second liquid outlet; the diameter of the second rod body is greater than the diameter of the first rod body, and the length of the second rod body is equal to the length of the first rod body; the first rod body and the second rod body are arranged in parallel, the first rod body and the output shaft are arranged vertically, and the output shaft is used to drive the first rod body and the second rod body simultaneously; The plunger pair is provided with a liquid outlet channel, the liquid outlet portion is connected with the first liquid outlet and the second liquid outlet through the liquid outlet channel, and the conversion valve is arranged on the liquid outlet channel; the liquid inlet portion includes the first liquid inlet and the second liquid inlet.

8. The demolition tool according to claim 1, characterized in that, A coupling is provided between the working head and the piston, and the working head includes one or more of a shearing head, an expanding head, and a shear-expanding head.

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