Electric pick capable of reducing temperature of internal piston mechanism

Abstract

The utility model discloses an electric pick capable of reducing the temperature of an internal piston mechanism, which comprises an electric pick body, a piston cylinder fixedly mounted at the lower part of the electric pick body, a piston guide cavity formed in the piston cylinder, an impact piston slidably mounted in the piston guide cavity, and an impact hammer fixedly mounted at one end of the impact piston in the piston guide cavity, a spiral hole is formed in the periphery in the piston guide cavity, a cooling mechanism is fixedly installed in the spiral hole, and the cooling mechanism can absorb and conduct the temperature in the piston guide cavity. Through the design of the cooling mechanism, heat generated by friction between the impact piston and the piston guide cavity can be continuously cooled, it is ensured that the electric pick body is efficiently cooled in long-time use, and equipment overheating can be prevented through effective heat management, so that the piston and the piston guide cavity are protected, abrasion and material fatigue are reduced, and the service life of the electric pick is prolonged. And the overall durability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pickaxes, and particularly to an electric pickaxe capable of reducing the temperature of an internal piston mechanism. Background Technique

[0002] An electric pickaxe is a double-insulated hand-held power tool powered by a single-phase series-wound motor. It has the characteristics of safety and reliability, high efficiency, and convenient operation. It is widely used in pipeline laying, mechanical installation, construction of water supply and drainage facilities, interior decoration, construction of port facilities, and other construction projects. It is suitable for using a pickaxe bit or other appropriate accessories, such as chisels, shovels, etc., to perform operations such as breaking, leveling, digging, grooving, and cutting on concrete, masonry structures, and asphalt pavements.

[0003] For example, the patent with the national authorized patent publication number CN212735916U discloses an electric pickaxe shock absorption device, which includes an electric pickaxe body. A main handle is provided at the rear end of the electric pickaxe body. A shock absorption chamber is provided between the electric pickaxe body and the main handle. A buffer support rod, a sleeve body, and a connecting rod are provided in the shock absorption chamber. A buffer pad and a buffer pad mounting plate are sleeved on the buffer support rod; one end of the connecting rod is fixedly connected to one side of the shock absorption chamber, and a piston is provided at the other end. The sleeve body is fixedly connected to the shock absorption chamber. An opening is provided at one end of the sleeve body. A buffer spring is provided in the sleeve body. One end of the buffer spring is fixedly connected to the sleeve body, and the other end is fixedly connected to the piston of the connecting rod. The utility model has a simple structure, reasonable design, and convenient operation. Through the compression force and rebound force of the buffer support rod, connecting rod, buffer spring, etc. in the shock absorption chamber, the vibration generated during the use of the electric pickaxe is greatly reduced, thereby playing a role in protecting the operator, improving work efficiency, and enhancing practicability.

[0004] However, during the high-frequency impact process of the above electric pickaxe shock absorption device, the temperature of the piston chamber and the piston is relatively high, which easily causes the equipment to overheat. And the overheating of the equipment will lead to a decline in the performance of the lubricating oil, increase friction, and further accelerate wear, affecting its performance and service life. Content of the Utility Model

[0005] The purpose of the utility model is to provide an electric pickaxe capable of reducing the temperature of an internal piston mechanism to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An electric pickaxe capable of reducing the temperature of an internal piston mechanism, comprising: an electric pickaxe body, a piston cylinder is fixedly installed at the lower part of the electric pickaxe body, a piston guide cavity is formed in the piston cylinder, an impact piston is slidably installed in the piston guide cavity, an impact hammer is fixedly installed at one end of the impact piston in the piston guide cavity, a spiral hole is formed in the periphery of the piston guide cavity, and a cooling mechanism is fixedly installed in the spiral hole, and the cooling mechanism can absorb and conduct the temperature in the piston guide cavity.

[0008] Preferably, the cooling mechanism includes a first threaded heat conduction tube and a second threaded heat conduction tube. Coolant is stored in the first threaded heat conduction tube and the second threaded heat conduction tube. The first threaded heat conduction tube is fixedly installed in the spiral hole, and the second threaded heat conduction tube is fixedly installed in the installation groove, and the installation groove is formed at one end of the piston cylinder.

[0009] Preferably, heat dissipation holes are formed on the outer surface of the installation groove.

[0010] Preferably, the liquid inlet of the first threaded heat conduction tube is communicated with the liquid discharge pipe of the water pump. The water pump is fixedly installed in the docking groove, and the docking groove is formed at one end of the electric pickaxe body. The liquid outlet of the first threaded heat conduction tube is fixedly connected with a first connecting pipe, and the first connecting pipe penetrates into the installation groove and is communicated with a second connecting pipe. The second connecting pipe is communicated and installed at one end of the liquid inlet of the second threaded heat conduction tube, and the liquid discharge port of the second threaded heat conduction tube is communicated with the liquid inlet pipe of the water pump.

[0011] Preferably, fins are fixedly installed on the outer surface of the second threaded heat conduction tube.

[0012] Preferably, a thermoelectric cooler is fixedly installed at the bottom of the installation groove. The heat generating surface on the lower surface of the thermoelectric cooler is located on the outer lower surface of the piston cylinder. The refrigerating surface on the upper surface of the thermoelectric cooler is located in the installation groove. A copper column is fixedly installed on the upper surface of the refrigerating surface of the thermoelectric cooler, and the outer surface of the copper column is fitted and sleeved with the second threaded heat conduction tube.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. Through the design of the electric pickaxe body, piston cylinder, piston guide cavity, spiral hole, and cooling mechanism, during the use of the electric pickaxe body, the impact piston will drive the impact hammer to move at high speed in the piston guide cavity. Prolonged high-speed movement will cause friction between the impact piston and the piston guide cavity, generating heat. The coolant in the cooling mechanism within the spiral holes around the inner and outer perimeters of the piston guide cavity will adsorb heat and transfer it to the cooling mechanism in the installation groove for heat cooling during the operation of the impact piston. The coolant after cooling will be fed back into the cooling mechanism within the spiral holes. Thus, the cooling mechanism within the spiral holes can always maintain a relatively low temperature to adsorb the heat generated by the friction between the piston and the piston guide cavity and perform the cooling function. This effectively prevents heat accumulation, reduces the impact of heat generated by friction on the equipment, transfers the heat to the cooling mechanism in the installation groove, where the heat can be quickly dispersed and removed, reducing the occurrence of local overheating. It enables the electric pickaxe body to operate at a relatively low and stable temperature, helps maintain the performance of the equipment, prevents thermal expansion, material deformation, or a decrease in the performance of lubricating oil caused by overheating, and thereby improves the service life and working efficiency of the electric pickaxe body.

[0015] 2. Through the design of the thermoelectric cooler, copper column, water pump, first threaded heat-conducting tube, second threaded heat-conducting tube, and fins, when heat is generated due to the friction between the impact piston and the piston guide cavity during prolonged high-speed movement, the first threaded heat-conducting tube within the spiral holes around the inner and outer perimeters of the piston guide cavity will adsorb and conduct the heat to the internal coolant. After the coolant adsorbs heat and is heated, the water pump will extract the cooled coolant in the second threaded heat-conducting tube and feed it into the first threaded heat-conducting tube through the drain pipe. Then, the heated coolant in the first threaded heat-conducting tube can be pushed into the first connecting tube. The coolant in the first connecting tube will enter the second threaded heat-conducting tube along the second connecting tube connected at one end. After the coolant with adsorbed heat enters the second threaded heat-conducting tube, it will conduct the heat to the fins on the outer surface of the second threaded heat-conducting tube for the first step of heat dissipation. The heat adsorbed by the fins will dissipate to the outside through the heat dissipation holes opened in the installation groove. Subsequently, the inner wall of the second threaded heat-conducting tube will also be cooled by the copper column through the cold surface of the thermoelectric cooler to perform the second step of heat dissipation for the second threaded heat-conducting tube, accelerating the heat dissipation of the coolant in the second threaded heat-conducting tube. The coolant after cooling will be fed back into the first threaded heat-conducting tube through the drain pipe again, realizing a continuously circulating coolant system that can continuously cool the heat generated by the friction between the impact piston and the piston guide cavity, ensuring efficient cooling of the electric pickaxe body during long-term use. And effective heat management can prevent the equipment from overheating, thereby protecting the piston and the piston guide cavity, reducing wear and material fatigue, and improving the overall durability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 Schematic diagram of the docking groove structure of the present utility model;

[0018] Figure 3 Schematic diagram of the piston cylinder structure of the present utility model;

[0019] Figure 4 Schematic diagram of the structure of the threaded hole and the mounting groove of the present utility model;

[0020] Figure 5 Schematic diagram of the structure of the first threaded heat conduction tube and the second threaded heat conduction tube of the present utility model;

[0021] Figure 6 Schematic diagram of the structure of the cooling mechanism of the present utility model.

[0022] In the figure: 1, electric pickaxe body; 101, piston cylinder; 102, docking groove; 103, spiral hole; 104, piston guide cavity; 105, mounting groove; 2, cooling mechanism; 201, thermoelectric cooler; 202, copper column; 203, second threaded heat conduction tube; 204, first threaded heat conduction tube; 205, water pump; 206, liquid discharge pipe; 207, liquid inlet pipe; 208, first connecting pipe; 209, second connecting pipe; 210, fin. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6 , the present utility model provides the following technical solutions:

[0025] As Figures 1-4 shown, an electric pickaxe capable of reducing the temperature of the internal piston mechanism includes: an electric pickaxe body 1, a piston cylinder 101 is fixedly installed at the lower part of the electric pickaxe body 1, a piston guide cavity 104 is opened in the piston cylinder 101, an impact piston is slidably installed in the piston guide cavity 104, an impact hammer is fixedly installed at one end of the impact piston in the piston guide cavity 104, spiral holes 103 are opened around the outside of the piston guide cavity 104, and a cooling mechanism 2 is fixedly installed in the spiral holes 103. The cooling mechanism 2 can absorb and conduct the temperature in the piston guide cavity 104.

[0026] Through the design of the electric pickaxe body 1, the piston cylinder 101, the piston guide cavity 104, the spiral hole 103 and the cooling mechanism 2, during the use of the electric pickaxe body 1, the impact piston will drive the impact hammer to move at high speed in the piston guide cavity 104. The long-term high-speed movement will cause friction between the impact piston and the piston guide cavity 104 to generate heat. The cooling liquid in the cooling mechanism 2 in the spiral hole 103 inside and outside the piston guide cavity 104 will adsorb heat and transmit it to the cooling mechanism 2 in the installation groove 105 to cool the heat during the operation of the impact piston. The cooled cooling liquid will be fed back into the cooling mechanism 2 in the spiral hole 103 again. Thus, the cooling mechanism 2 in the spiral hole 103 can always maintain a relatively low temperature to adsorb the heat generated by the friction between the piston and the piston guide cavity 104 and perform the cooling function. Therefore, heat accumulation can be effectively prevented, thereby reducing the impact of heat generated by friction on the equipment. By transferring the heat to the cooling mechanism 2 in the installation groove 105, the heat can be quickly dispersed and removed, reducing the situation of local overheating. The electric pickaxe body 1 can operate at a relatively low and stable temperature, which helps to maintain the performance of the equipment, prevent thermal expansion, material deformation or deterioration of lubricating oil performance caused by overheating, and thus can improve the service life and working efficiency of the electric pickaxe body 1.

[0027] As Figures 5-6 shown, the cooling mechanism 2 includes a first threaded heat conduction tube 204 and a second threaded heat conduction tube 203. The first threaded heat conduction tube 204 and the second threaded heat conduction tube 203 store cooling liquid. The first threaded heat conduction tube 204 is fixedly installed in the spiral hole 103, and the second threaded heat conduction tube 203 is fixedly installed in the installation groove 105. The installation groove 105 is opened at one end of the piston cylinder 101.

[0028] The outer surface of the installation groove 105 is provided with heat dissipation holes.

[0029] The liquid inlet of the first threaded heat conduction tube 204 is connected to the liquid discharge pipe 206 of the water pump 205. The water pump 205 is fixedly installed in the docking groove 102. The docking groove 102 is opened at one end of the electric pickaxe body 1. The liquid outlet of the first threaded heat conduction tube 204 is fixedly connected to a first connecting tube 208. The first connecting tube 208 penetrates into the installation groove 105 and is connected to a second connecting tube 209. The second connecting tube 209 is connected to the liquid inlet end of the second threaded heat conduction tube 203. The liquid discharge port of the second threaded heat conduction tube 203 is connected to the liquid inlet pipe 207 of the water pump 205.

[0030] Fins 210 are fixedly installed on the outer surface of the second threaded heat conduction tube 203.

[0031] A thermoelectric cooler 201 is fixedly installed at the inner bottom of the installation groove 105. The lower surface heating surface of the thermoelectric cooler 201 is located on the outer lower surface of the piston cylinder 101, and the refrigerating surface on the upper surface of the thermoelectric cooler 201 is located within the installation groove 105. A copper column 202 is fixedly installed on the upper surface of the refrigerating surface of the thermoelectric cooler 201, and a second threaded heat conduction tube 203 is fitted and sleeved on the outer surface of the copper column 202.

[0032] Through the design of the thermoelectric cooler 201, copper column 202, water pump 205, first threaded heat conduction tube 203, second threaded heat conduction tube 204 and fins 210, when heat is generated due to the friction between the impact piston and the piston guide cavity 104 during long-term high-speed movement, the first threaded heat conduction tube 204 in the spiral holes 103 inside and outside the piston guide cavity 104 will adsorb and conduct the heat to the internal coolant. After adsorbing the heat and being heated, the water pump 205 will extract the cooled coolant in the second threaded heat conduction tube 203 to the drain pipe 206 and supply it into the first threaded heat conduction tube 204. Then, the heated coolant in the first threaded heat conduction tube 204 can be pushed into the first connecting pipe 208. The coolant in the first connecting pipe 208 will enter the second threaded heat conduction tube 203 through the second connecting pipe 209 connected end-to-end. After the coolant adsorbed with temperature enters the second threaded heat conduction tube 203, it will conduct the heat to the fins 210 on the outer surface of the second threaded heat conduction tube 203 for the first step of heat dissipation. The heat adsorbed by the fins 210 will dissipate to the outside through the heat dissipation holes opened in the installation groove 105. Subsequently, the inner wall of the second threaded heat conduction tube 203 will also be cooled by the copper column 202 through the refrigerating surface of the thermoelectric cooler 201 to conduct the cooling capacity for the second step of heat dissipation of the second threaded heat conduction tube 203, so as to accelerate the heat of the coolant in the second threaded heat conduction tube 203. After being cooled, the coolant will be supplied into the first threaded heat conduction tube 204 again through the drain pipe 206, realizing a continuously circulating coolant system, which can continuously cool the heat generated by the friction between the impact piston and the piston guide cavity 104, ensure the efficient cooling of the electric pickaxe body 1 during long-term use, and effective heat management can prevent the equipment from overheating, thereby protecting the piston and the piston guide cavity 104, reducing wear and material fatigue, and improving the overall durability of the equipment.

[0033] Summarize and sort out the working steps of this solution according to the above technical solution: During the use of the electric hammer body 1, the impact piston drives the impact hammer to move at high speed in the piston guide cavity 104. The long-term high-speed movement will cause friction between the impact piston and the piston guide cavity 104 to generate heat. The first threaded heat conduction tube 204 in the spiral holes 103 inside and outside the piston guide cavity 104 will adsorb the heat and conduct it to the internal coolant. After adsorbing the heat and being heated, the water pump 205 will extract the cooled coolant in the second threaded heat conduction tube 203 to the drain pipe 206 and supply it into the first threaded heat conduction tube 204. Then, the heated coolant in the first threaded heat conduction tube 204 can be pushed into the first connecting tube 208. The coolant in the first connecting tube 208 will enter the second threaded heat conduction tube 203 along the second connecting tube 209 connected in one end. After the coolant with adsorbed temperature enters the second threaded heat conduction tube 203, it will conduct the heat to the fins 210 on the outer surface of the second threaded heat conduction tube 203 for the first step of heat dissipation. The heat adsorbed by the fins 210 will dissipate to the outside through the heat dissipation holes opened in the installation groove 105. Subsequently, the inner wall of the second threaded heat conduction tube 203 will also be cooled by the copper column 202 through the cold surface of the thermoelectric cooler 201 to conduct the cooling capacity for the second step of heat dissipation of the second threaded heat conduction tube 203 to accelerate the heat of the coolant in the second threaded heat conduction tube 203. After being cooled, the coolant will be supplied into the first threaded heat conduction tube 204 through the drain pipe 206 again, realizing a continuously circulating coolant system.

[0034] In summary: It can continuously cool the heat generated by the friction between the impact piston and the piston guide cavity 104, ensure the efficient cooling of the electric hammer body 1 during long-term use, and effective heat management can prevent the equipment from overheating, thereby protecting the piston and the piston guide cavity 104, reducing wear and material fatigue, and improving the overall durability of the equipment.

[0035] Parts not involved in the present utility model are the same as or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electric pick capable of reducing the temperature of an internal piston mechanism, characterized in that: include: An electric pick body (1), wherein a piston cylinder (101) is fixedly installed at the lower part of the electric pick body (1), a piston guide chamber (104) is provided in the piston cylinder (101), an impact piston is slidably installed in the piston guide chamber (104), an impact hammer is fixedly installed at one end of the impact piston in the piston guide chamber (104), a spiral hole (103) is provided on the inner and outer periphery of the piston guide chamber (104), a cooling mechanism (2) is fixedly installed in the spiral hole (103), and the cooling mechanism (2) can absorb and conduct the temperature in the piston guide chamber (104).

2. The electric pick capable of reducing the temperature of the internal piston mechanism according to claim 1, characterized in that: The cooling mechanism (2) comprises a first threaded heat-conducting pipe (204) and a second threaded heat-conducting pipe (203), wherein the first threaded heat-conducting pipe (204) and the second threaded heat-conducting pipe (203) store cooling liquid, the first threaded heat-conducting pipe (204) is fixedly installed in the spiral hole (103), and the second threaded heat-conducting pipe (203) is fixedly installed in the installation groove (105), and the installation groove (105) is opened at one end of the piston cylinder (101).

3. The electric pick capable of reducing the temperature of the internal piston mechanism according to claim 2, characterized in that: The outer surface of the installation groove (105) is provided with heat dissipation holes.

4. The electric pick capable of reducing the temperature of the internal piston mechanism according to claim 2, characterized in that: The liquid inlet of the first threaded heat-conducting tube (204) is connected to the liquid discharge pipe (206) of the water pump (205); the water pump (205) is fixedly installed in the docking groove (102); the docking groove (102) is opened at one end of the electric pick body (1); the liquid outlet of the first threaded heat-conducting tube (204) is fixedly connected to the first connecting tube (208); the first connecting tube (208) passes through the installation groove (105) and is connected to the second connecting tube (209); the second connecting tube (209) is connected and installed at one end of the liquid inlet of the second threaded heat-conducting tube (203); the liquid discharge port of the second threaded heat-conducting tube (203) is connected to the liquid inlet pipe (207) of the water pump (205).

5. The electric pick capable of reducing the temperature of the internal piston mechanism according to claim 4, characterized in that: Fins (210) are fixedly mounted on the outer surface of the second threaded heat conducting pipe (203).

6. The electric pick capable of reducing the temperature of the internal piston mechanism according to claim 5, characterized in that: A thermoelectric cooler (201) is fixedly mounted on the bottom of the mounting groove (105); the heating surface of the lower surface of the thermoelectric cooler (201) is located on the outer lower surface of the piston cylinder (101); the cooling surface of the upper surface of the thermoelectric cooler (201) is located in the mounting groove (105); a copper column (202) is fixedly mounted on the upper surface of the cooling surface of the thermoelectric cooler (201); and a second threaded heat conducting pipe (203) is fitted on the outer surface of the copper column (202).

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