Heavy duty excavator with hydraulic pump wear prevention

Abstract

The application discloses a heavy excavator capable of preventing hydraulic pump abrasion, which comprises an excavator body, wherein the excavator body comprises a crawler machine, a base and an outer shell. The cooperation of various components can effectively prevent the abrasion of the hydraulic pump body, reduce the failure rate of the hydraulic pump body and reduce the maintenance cost. During use, the cooperation of the components can continuously convey cooling water into the cooling coil, the cooling coil can effectively cool the hydraulic pump body, the overheating and abrasion of the components in the hydraulic pump body are prevented, and the service life of the hydraulic pump body is prolonged. The filter screen is installed at the connecting pipe I and the connecting pipe II, the filter screen can effectively filter the hydraulic oil entering the hydraulic pump body, the quality of the hydraulic oil is ensured, the abrasion of the hydraulic pump body caused by the hydraulic oil is reduced, the filter screen is convenient to replace, and the clamping device assembly can effectively fix the fixing ring and the filter screen during installation, so that the use is better.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, specifically to a heavy-duty excavator designed to prevent wear on the hydraulic pump. Background Technology

[0002] Heavy excavators, also known as excavating machinery or diggers, are earthmoving machines that use a bucket to excavate materials above or below the machine's bearing surface and load them into transport vehicles or unload them at a stockpile. The hydraulic pump on an excavator is one of the main components controlling the bucket; prolonged use can cause wear and tear, increasing the hydraulic pump's failure rate.

[0003] In this regard, Chinese utility model patent with authorization announcement number CN216894844U discloses a hydraulic pump, which includes an input pump body, an output pump body, a pump body connecting screw, an adjusting screw, a locking nut, an upper end cover screw, an upper end cover, a lower end cover, a lower end cover screw, and a pump core assembly.

[0004] This hydraulic pump has a reasonable structure, is easy to use and operate, and allows for convenient adjustment of the discharged oil pressure. However, it lacks a wear-prevention structure, which will cause wear and tear on the pump over time, increasing the failure rate and maintenance costs. Therefore, we propose a heavy-duty excavator to prevent hydraulic pump wear and solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a heavy-duty excavator that prevents wear on the hydraulic pump, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty excavator for preventing wear of hydraulic pumps, comprising an excavator body, the excavator body comprising a track, a base and an outer shell, the top surface of the track being fixedly connected to the base, one side of the top surface of the base being fixedly connected to the outer shell, the other side of the top surface of the base being fixedly connected to a fixing frame and a hydraulic rod, the fixing frame being rotatably connected to a robotic arm, and the robotic arm being movably connected to the top end of the hydraulic rod;

[0007] The hydraulic pump body, coolant tank and hydraulic oil tank are fixedly connected to one side of the top surface of the base. The hydraulic pump body includes a base plate, a servo motor and a rotating shaft. The base plate is fixedly connected to one side of the top surface of the base. The hydraulic pump housing is fixedly connected to one side of the top surface of the base plate. A cooling chamber is opened inside the hydraulic pump housing. A cooling coil is fixedly connected inside the cooling chamber.

[0008] One end of the coolant tank is fixed and connected to one end of the water supply pipe 1. The other end of the water supply pipe 1 is threaded to flange 1. One end of the flange 1 is threaded to one end of water supply pipe 2. The other end of water supply pipe 2 is fixed and connected to the cooling coil. One end of the cooling coil is fixed and connected to one end of water supply pipe 3. The other end of water supply pipe 3 is fixed and connected to the coolant tank.

[0009] The top two sides of the hydraulic pump housing are fixed and connected to connecting pipe one and connecting pipe two. The top ends of connecting pipe one and connecting pipe two are threaded to two flange three. The two flange three are threaded to two clamping assemblies. The two clamping assemblies are provided with two fixing rings inside. The inner walls of the two fixing rings are fixedly connected to two filter screens.

[0010] Preferably, the top ends of the two clamping device assemblies are threaded onto two flanges, and the two flanges are threaded onto oil pipes two and one. One end of the oil pipe is fixed and connected to the hydraulic oil tank, and one end of the oil pipe is fixed and connected to the hydraulic rod.

[0011] Preferably, the cab is fixedly connected to one side of the top surface of the base, the bucket is movably connected to the free end of the robotic arm, and the hydraulic pump body, coolant tank and hydraulic oil tank are located inside the outer shell.

[0012] Preferably, the hydraulic pump housing has two chambers, chamber one and chamber two, on both sides. A cylindrical block is fixedly connected to the middle of the hydraulic pump housing. A servo motor is fixedly connected to one side of the top surface of the base plate. A rotating shaft is fixedly connected to the shaft of the servo motor. The rotating shaft is rotatably connected to the cylindrical block. A cylindrical cam is fixedly sleeved on one side of the rotating shaft. The cylindrical cam is located inside chamber two.

[0013] Preferably, two movable spheres are movably connected to one side of the cylindrical cam, and the two movable spheres are movably sleeved on one end of the two oil supply shells. The two oil supply shells are slidably connected to two cylindrical tubes, which are opened at the top and bottom of the cylindrical block. Two oil blocking discs are fixedly connected to one side of the inside of the two cylindrical tubes, and the two oil blocking discs are connected to two oil supply holes.

[0014] Preferably, one end of two damping springs is fixedly connected to one side of the inner cavity, and the other end of the two damping springs is fixedly connected to two small spheres, which movably contact two oil-blocking discs.

[0015] Preferably, a Y-shaped tube is formed through the inside of the oil tank. A control tube is fixedly connected to one side of the inside of the Y-shaped tube. One end of a spring is fixedly sleeved on one side of the control tube. The other end of the spring is movably connected to a small ball. The small ball is slidably connected to the Y-shaped tube.

[0016] Preferably, a first bevel gear is fixedly sleeved on one side of the rotating shaft, the first bevel gear meshes with a second bevel gear, the second bevel gear is fixedly connected to one end of the second rotating shaft, and the other end of the second rotating shaft is fixedly connected to a water pump impeller, the water pump impeller movably contacts the inner wall of the water delivery pipe.

[0017] Preferably, the snap-fit ​​assembly includes a filter tube, a control rod, and a spring housing. The top and bottom ends of the filter tube are threaded with flanges two and three. Two controller housings are fixedly connected to the periphery of the filter tube. Spring housing one and spring housing two are fixedly connected to the inside two sides of the controller housing. One end of two springs two is fixedly connected to one side of the inner wall of spring housing one and spring housing two. The other end of the two springs two is fixedly connected to two limiting circles. The two limiting circles are slidably connected to the inside of spring housing one and spring housing two. A moving rod and a control rod are fixedly connected to one side of the two limiting circles that are close to each other. The moving rod is inserted into a socket. The socket is opened on the periphery of a fixing ring. The fixing ring is inserted into the filter tube.

[0018] Preferably, a cylindrical rod one is fixedly connected to the periphery of the control rod, one end of the cylindrical rod one is movably connected to a connecting rod, the other end of the connecting rod is movably connected to a cylindrical rod three, the cylindrical rod three is fixedly connected to the periphery of the moving rod, and a cylindrical rod two is rotatably sleeved in the middle of the connecting rod, the cylindrical rod two being fixedly connected to the bottom surface inside the controller housing.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Through the cooperation of various components, this invention can effectively prevent wear on the hydraulic pump body, reduce the failure rate of the hydraulic pump body, and reduce maintenance costs.

[0021] 2. When in use, the components of this invention can continuously supply cooling water to the cooling coil, which can effectively cool the hydraulic pump body, preventing overheating and wear of the components inside the hydraulic pump body and increasing the service life of the hydraulic pump body.

[0022] 3. The present invention has filter screens installed at connecting pipe one and connecting pipe two. The filter screens can effectively filter the hydraulic oil entering the hydraulic pump body, ensuring the quality of the hydraulic oil, reducing the wear of the hydraulic oil on the internal parts of the hydraulic pump body, and are easy to install and replace. When the clamping assembly is installed, it can also effectively fix the fixing ring and the filter screen, ensuring better use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention;

[0025] Figure 3This is a schematic cross-sectional view of the outer casing of the present invention;

[0026] Figure 4 This is a schematic cross-sectional view of the hydraulic pump body of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the snap-fit ​​assembly of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged diagram of point A in the middle.

[0030] In the diagram: 1. Excavator body; 101. Tracked excavator; 102. Base; 103. Outer shell; 104. Cab; 105. Mounting frame; 106. Robotic arm; 107. Hydraulic rod; 108. Bucket; 2. Hydraulic pump body; 201. Base plate; 202. Servo motor; 203. Rotating shaft one; 204. Hydraulic pump housing; 205. Cooling chamber; 206. Chamber one; 207. Chamber two; 208. Oil supply shell; 209. Cylindrical cam; 210. Moving sphere; 211. Y-shaped tube; 212. Small sphere one; 213. Spring one; 214. Control tube; 215. Oil-blocking disc; 216. Oil supply hole; 217. Damping spring; 218. Small sphere two; 219. Cylindrical block; 220. Cylindrical tube; 3. Coolant tank; 4. Water supply pipe 1; 5. Flange 1; 6. Water supply pipe 2; 7. Cooling coil; 8. Water supply pipe 3; 9. Snap-fit ​​assembly; 91. Filter pipe; 92. Control lever; 93. Spring housing 1; 94. Spring housing 2; 95. Limiting circle; 96. Spring 2; 97. Connecting rod; 98. Column rod 1; 99. Column rod 2; 910. Column rod 3; 911. Moving rod; 912. Insertion hole; 913. Controller housing; 10. Oil supply pipe 1; 11. Hydraulic oil tank; 12. Oil supply pipe 2; 13. Bevel gear 1; 14. Bevel gear 2; 15. Rotating shaft 2; 16. Water pump impeller; 17. Filter screen; 18. Fixing ring; 19. Flange 2; 20. Connecting pipe 1; 21. Connecting pipe 2; 22. Flange 3. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Reference Figure 1-5 This is the first embodiment of the present invention. This embodiment provides a heavy excavator for preventing wear of hydraulic pumps, including an excavator body 1. The excavator body 1 includes a track 101, a base 102, and an outer shell 103. The top surface of the track 101 is fixedly connected to the base 102. One side of the top surface of the base 102 is fixedly connected to the outer shell 103. The other side of the top surface of the base 102 is fixedly connected to a fixing frame 105 and a hydraulic rod 107. The fixing frame 105 is rotatably connected to a robotic arm 106. The robotic arm 106 is movably connected to the top end of the hydraulic rod 107. The track 101 helps the excavator body 1 move, the hydraulic rod 107 helps move the robotic arm 106, and the fixing frame 105 assists in the rotation and movement of the robotic arm 106.

[0034] The hydraulic pump body 2, coolant tank 3 and hydraulic oil tank 11 are fixedly connected to one side of the top surface of the base 102. The hydraulic pump body 2 includes a base plate 201, a servo motor 202 and a rotating shaft 203. The base plate 201 is fixedly connected to one side of the top surface of the base 102. The hydraulic pump housing 204 is fixedly connected to one side of the top surface of the base plate 201. A cooling chamber 205 is opened inside the hydraulic pump housing 204. A cooling coil 7 is fixedly connected inside the cooling chamber 205. The cooling coil 7 helps to cool down the hydraulic pump body 2 and reduce the wear of the hydraulic pump body 2. The base plate 201 helps to fix the hydraulic pump body 2.

[0035] One end of the water supply pipe 4 is fixed to one side of the coolant tank 3 and connected to it. The other end of the water supply pipe 4 is threaded to flange 5. One end of the flange 5 is threaded to one end of water supply pipe 6. The other end of water supply pipe 6 is fixed to and connected to the cooling coil 7. One end of the cooling coil 7 is fixed to and connected to one end of water supply pipe 8. The other end of water supply pipe 8 is fixed to and connected to the coolant tank 3. The cooling water in the coolant tank 3 moves to water supply pipe 6 through water supply pipe 4 and is then transported to the cooling coil 7. The used cooling water is transported back to the coolant tank 3 through water supply pipe 8 for reuse. The coolant tank 3 can cool the cooling water. Flange 5 helps to fix water supply pipe 4 and water supply pipe 6.

[0036] The top two sides of the hydraulic pump housing 204 are fixed and connected to connecting pipe 1 20 and connecting pipe 21. The top ends of connecting pipe 1 20 and connecting pipe 21 are threaded with two flanges 3 22. The two flanges 3 22 are threaded with two clamping assemblies 9. The two clamping assemblies 9 have two fixing rings 18 inside. The inner walls of the two fixing rings 18 are fixedly connected to two filter screens 17. The fixing rings 18 help to fix the filter screens 17. The filter screens 17 help to filter hydraulic oil and help reduce the wear of the hydraulic pump body 2. Connecting pipe 2 21 is the hydraulic oil input pipe and connecting pipe 1 20 is the hydraulic oil output pipe. The clamping assemblies 9 help to fix the fixing rings 18 and prevent the filter screens 17 from moving during use. The flanges 3 22 help to fix connecting pipe 1 20, connecting pipe 21 and clamping assemblies 9.

[0037] Example 2

[0038] Reference Figure 1-7 This is the second embodiment of the present invention, which is based on the previous embodiment. Specifically, the top ends of the two clamping components 9 are threaded to two flanges 19. The two flanges 19 are threaded to oil supply pipe 12 and oil supply pipe 10. One end of oil supply pipe 12 is fixed and connected to the hydraulic oil tank 11, and one end of oil supply pipe 10 is fixed and connected to the hydraulic rod 107. The flanges 19 help to fix oil supply pipe 12, oil supply pipe 10 and clamping components 9. The hydraulic oil in the hydraulic oil tank 11 is input into the hydraulic pump body 2 through oil supply pipe 12, and then transported from the hydraulic pump body 2 to oil supply pipe 10, and then from oil supply pipe 10 to hydraulic rod 107.

[0039] The cab 104 is fixedly connected to one side of the top surface of the base 102, and the bucket 108 is movably connected to the free end of the robotic arm 106. The hydraulic pump body 2, coolant tank 3 and hydraulic oil tank 11 are located inside the outer shell 103. The bucket 108 is the main component of the excavator body 1. The outer shell 103 helps to protect the hydraulic pump body 2, coolant tank 3 and hydraulic oil tank 11. The operator controls the excavator body 1 through the cab 104.

[0040] The hydraulic pump housing 204 has two chambers, namely chamber 206 and chamber 207, on its two sides. A cylindrical block 219 is fixedly connected to the middle of the hydraulic pump housing 204. A servo motor 202 is fixedly connected to one side of the top surface of the base plate 201. A rotating shaft 203 is fixedly connected to the shaft of the servo motor 202. The rotating shaft 203 is rotatably connected to the cylindrical block 219. A cylindrical cam 209 is fixedly sleeved around the circumference of the rotating shaft 203. The cylindrical cam 209 is located inside the chamber 207. When the servo motor 202 is turned on, the servo motor 202 rotates and drives the rotating shaft 203 to rotate. The rotation of the rotating shaft 203 drives the cylindrical cam 209 to rotate.

[0041] Two movable balls 210 are movably connected to one side of the cylindrical cam 209. The two movable balls 210 are movably sleeved on one end of the two oil supply shells 208. The two oil supply shells 208 are slidably connected to two cylindrical tubes 220. The two cylindrical tubes 220 are opened at the top and bottom of the cylindrical block 219. Two oil blocking discs 215 are fixedly connected to one side inside the two cylindrical tubes 220. The two oil blocking discs 215 have two oil supply holes 216 through them. The rotation of the cylindrical cam 209 drives the movable balls 210 to move left and right. The left and right movement of the movable balls 210 drives the oil supply shells 208 to move left and right inside the cylindrical tubes 220. The oil blocking discs 215 provide assistance for the delivery of hydraulic oil.

[0042] Inside chamber 206, one end of two damping springs 217 is fixedly connected to one side, and the other end of the two damping springs 217 is fixedly connected to two small spheres 218. The two small spheres 218 move in contact with two oil-blocking discs 215. When the oil supply shell 208 moves, the oil pressure compresses the small spheres 218 to one side, and the compression of the small spheres 218 compresses the damping springs 217. When the oil supply shell 208 moves back, the damping springs 217 move the small spheres 218 back to their original position, and the small spheres 218 contact the oil supply holes 216 on the oil-blocking discs 215, thus sealing them. This reciprocating motion allows the oil pressure to be output normally.

[0043] A Y-shaped tube 211 is opened through the inside of the oil supply shell 208. A control tube 214 is fixedly connected to one side of the inside of the Y-shaped tube 211. One end of a spring 213 is fixedly sleeved on one side of the control tube 214. The other end of the spring 213 is movably connected to a small ball 212. The small ball 212 is slidably connected to the Y-shaped tube 211. The inner diameter of the Y-shaped tube 211 is different. When the small ball 212 is in contact with one side, it can temporarily close the Y-shaped tube 211, and hydraulic oil enters the Y-shaped tube 211. When the spring 213 moves the small ball 212 to one side and closes the Y-shaped tube 211, oil pressure is formed. When the oil supply shell 208 moves in the opposite direction, the small ball 212 compresses the spring 213, and the hydraulic oil passes through the small ball 212 and then moves from the control tube 214 to the position of the oil blocking disc 215.

[0044] A bevel gear 13 is fixedly sleeved around the circumference of a rotating shaft 203. The bevel gear 13 meshes with a bevel gear 14. The bevel gear 14 is fixedly connected to one end of a rotating shaft 15. The other end of the rotating shaft 15 is fixedly connected to a water pump impeller 16. The water pump impeller 16 movably contacts the inner wall of the water supply pipe 4. The rotation of the rotating shaft 203 drives the bevel gear 13 to rotate, which in turn drives the bevel gear 14 to rotate, which in turn drives the rotating shaft 15 to rotate, which in turn drives the water pump impeller 16 to rotate.

[0045] The connector assembly 9 includes a filter tube 91, a control rod 92, and a spring housing 93. The top and bottom ends of the filter tube 91 are threaded onto flanges 19 and 22. Two controller housings 913 are fixedly connected to the periphery of the filter tube 91. Spring housings 93 and 94 are fixedly connected to the inside sides of the controller housings 913. One end of two springs 96 is fixedly connected to one side of the inner wall of spring housings 93 and 94. The other ends of the two springs 96 are fixedly connected to two limiting circles 95. The two limiting circles 95 slidably connect spring housings 93 and 94. Inside the second 94, two limiting circles 95 are fixedly connected to a moving rod 911 and a control rod 92 on one side of each other. The moving rod 911 is inserted into a socket 912, which is located around the fixed ring 18. The fixed ring 18 is inserted into a filter tube 91. When the control rod 92 is pressed, the control rod 92 moves, causing the limiting circle 95 to move. The movement of the limiting circle 95 compresses the second spring 96. At this time, the moving rod 911 also performs the same movement and moves out of the socket 912. At this time, the fixed ring 18 can be easily removed, making it convenient for the user to replace the filter screen 17.

[0046] The control lever 92 is fixedly connected to the first column rod 98. The first column rod 98 is movably connected to one end of the connecting rod 97. The other end of the connecting rod 97 is movably connected to the third column rod 910. The third column rod 910 is fixedly connected to the periphery of the moving rod 911. The middle of the connecting rod 97 is rotatably sleeved with the second column rod 99. The second column rod 99 is fixedly connected to the bottom surface inside the controller housing 913. The movement of the control lever 92 drives the first column rod 98 to move. The movement of the first column rod 98 drives the connecting rod 97 to rotate and move on the second column rod 99. The movement of the connecting rod 97 drives the third column rod 910 to move. The movement of the third column rod 910 drives the moving rod 911 to move.

[0047] Example 3

[0048] Reference Figure 1-7This is the third embodiment of the present invention, based on the above two embodiments. In use, the operator enters the cab 104 to control the excavator body 1. The tracked machine 101 moves the excavator body 1 to a designated location. When the robotic arm 106 controls the bucket 108, the servo motor 202 is activated. The rotation of the servo motor 202 drives the rotating shaft 203 to rotate, which in turn drives the cylindrical cam 209 to rotate. The rotation of the cylindrical cam 209 causes the movable ball 210 to move left and right. The left and right movement of the movable ball 210 causes the oil supply shell 208 to move left and right within the cylindrical tube 220. When the oil supply shell 208 moves, hydraulic oil enters the Y-shaped tube 211. When the spring 213 moves the small ball 212 to one side to close the Y-shaped tube 211... When the oil tank 208 moves in the opposite direction, the small ball 212 compresses the spring 213, and the hydraulic oil passes through the small ball 212 and then moves from the control pipe 214 to the position of the oil blocking disc 215. The oil pressure compresses the small ball 218 to one side, and the compression of the small ball 218 compresses the damping spring 217. When the oil tank 208 moves back, the damping spring 217 moves the small ball 218 back to its original position, and the small ball 218 contacts the oil outlet 216 on the oil blocking disc 215, sealing it. This reciprocating motion allows the hydraulic oil in the hydraulic tank 11 to be input into the hydraulic pump body 2 through the oil supply pipe 212, then from the hydraulic pump body 2 to the oil supply pipe 10, and then from the oil supply pipe 10 to the hydraulic rod 107. The pressure lever 107 helps control the robotic arm 106. When the rotating shaft 203 rotates, the rotating shaft 203 drives the bevel gear 13 to rotate, which in turn drives the bevel gear 14 to rotate. The bevel gear 14 then drives the rotating shaft 15 to rotate, which in turn drives the water pump impeller 16 to rotate. The water pump impeller 16 draws the cooling water from the coolant tank 3 into the water supply pipe 4, from where it moves to the water supply pipe 6, and from there it is transported to the cooling coil 7. After use, the cooling water is returned to the coolant tank 3 through the water supply pipe 8 for reuse. The coolant tank 3 cools the cooling water, and the cooling coil 7 helps cool the hydraulic pump body 2, reducing wear on the hydraulic pump body 2. After a period of use, it needs to be cooled. To replace the filter, remove flange 2 19, press control lever 92. Control lever 92 moves, causing limit circle 95 to move. Limit circle 95 compresses spring 2 96. Simultaneously, control lever 92 moves cylindrical rod 1 98, which in turn moves connecting rod 97, causing it to rotate on cylindrical rod 2 99. Connecting rod 97 moves cylindrical rod 3 910, which in turn moves moving rod 911. Moving rod 911 moves limit circle 95, compressing spring 2 96. Moving rod 911 then moves out of insertion hole 912, allowing the retaining ring 18 to be easily removed for filter replacement. During installation, similarly, press control lever 92 and insert retaining ring 18 into filter tube 91.Release the control lever 92, and spring 96 uses its elasticity to return the moving lever 911 to its original position. The moving lever 911 is then inserted into the insertion hole 912 for fixation. The filter screen 17 helps filter the hydraulic oil, reducing wear on the hydraulic pump body 2. Through the cooperation of various components, this invention effectively prevents wear on the hydraulic pump body 2, reduces the failure rate of the hydraulic pump body 2, and reduces maintenance costs. During use, the cooperation of the components continuously delivers cooling water to the cooling coil 7, which effectively cools the hydraulic pump body 2, preventing overheating and wear of the internal components and increasing the service life of the hydraulic pump body 2. The filter screen 17 is installed at the connecting pipe 20 and connecting pipe 21, effectively filtering the hydraulic oil entering the hydraulic pump body 2, ensuring the quality of the hydraulic oil, reducing wear on the internal components of the hydraulic pump body 2, and facilitating installation and replacement. During installation, the snap-fit ​​assembly 9 effectively secures the fixing ring 18 and the filter screen 17, ensuring better performance.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty excavator for preventing wear of the hydraulic pump, comprising an excavator body (1), characterized in that: The excavator body (1) includes a track (101), a base (102) and an outer shell (103). The top surface of the track (101) is fixedly connected to the base (102). The outer shell (103) is fixedly connected to one side of the top surface of the base (102). The other side of the top surface of the base (102) is fixedly connected to a fixing frame (105) and a hydraulic rod (107). The fixing frame (105) is rotatably connected to a robotic arm (106). The robotic arm (106) is movably connected to the top of the hydraulic rod (107). The base (102) is fixedly connected to the hydraulic pump body (2), coolant tank (3) and hydraulic oil tank (11) on one side of the top surface. The hydraulic pump body (2) includes a base plate (201), a servo motor (202) and a rotating shaft (203). The base plate (201) is fixedly connected to one side of the top surface of the base (102). The hydraulic pump housing (204) is fixedly connected to one side of the top surface of the base plate (201). A cooling chamber (205) is opened inside the hydraulic pump housing (204). A cooling coil (7) is fixedly connected inside the cooling chamber (205). The coolant tank (3) is fixed to one end of the water supply pipe (4) and connected to one end of the water supply pipe (4). The other end of the water supply pipe (4) is threaded to the flange (5). The flange (5) is threaded to one end of the water supply pipe (6). The other end of the water supply pipe (6) is fixed to and connected to the cooling coil (7). The cooling coil (7) is fixed to one end of the water supply pipe (8) and connected to one end of the water supply pipe (8). The other end of the water supply pipe (8) is fixed to and connected to the coolant tank (3). The top two sides of the hydraulic pump housing (204) are fixed and connected to connecting pipe one (20) and connecting pipe two (21). The top ends of connecting pipe one (20) and connecting pipe two (21) are respectively threaded with flange three (22). The two flange three (22) are respectively threaded with a snap-fit ​​assembly (9). The two snap-fit ​​assemblies (9) are respectively provided with a fixing ring (18) inside. The inner walls of the two fixing rings (18) are respectively fixedly connected with a filter screen (17). The snap-fit ​​assembly (9) includes a filter tube (91), a control rod (92), and a spring housing (93). The top and bottom ends of the filter tube (91) are threaded with flanges (19) and (22). Two controller housings (913) are fixedly connected to the periphery of the filter tube (91). Spring housings (93) and (94) are fixedly connected to the inside sides of the controller housings (913). A spring housing (93) and a spring housing (94) are fixedly connected to one side of the inner wall of each spring housing (93) and spring housing (94). At one end of 6), the other ends of the two springs (96) are each fixedly connected to a limiting circle (95). The two limiting circles (95) are respectively slidably connected to the inside of spring shell 1 (93) and spring shell 2 (94). The two limiting circles (95) are fixedly connected to a moving rod (911) and a control rod (92) on one side close to each other. The moving rod (911) is inserted into a socket (912). The socket (912) is opened on the circumference of the fixing ring (18). The fixing ring (18) is inserted into the filter tube (91).

2. A heavy-duty excavator for preventing hydraulic pump wear according to claim 1, characterized in that: The top ends of the two clamping components (9) are respectively threaded with a flange two (19), and the two flange two (19) are respectively threaded with an oil supply pipe two (12) and an oil supply pipe one (10). One end of the oil supply pipe two (12) is fixed and connected to the hydraulic oil tank (11), and one end of the oil supply pipe one (10) is fixed and connected to the hydraulic rod (107).

3. A heavy-duty excavator for preventing hydraulic pump wear according to claim 1, characterized in that: The cab (104) is fixedly connected to one side of the top surface of the base (102), the bucket (108) is movably connected to the free end of the robotic arm (106), and the hydraulic pump body (2), coolant tank (3) and hydraulic oil tank (11) are located inside the outer shell (103).

4. A heavy-duty excavator for preventing hydraulic pump wear according to claim 1, characterized in that: The hydraulic pump housing (204) has two chambers, namely chamber 1 (206) and chamber 2 (207), on both sides. A cylindrical block (219) is fixedly connected to the middle of the hydraulic pump housing (204). A servo motor (202) is fixedly connected to one side of the top surface of the base plate (201). A rotating shaft (203) is fixedly connected to the shaft of the servo motor (202). The rotating shaft (203) is rotatably connected to the cylindrical block (219). A cylindrical cam (209) is fixedly sleeved on the periphery of the rotating shaft (203). The cylindrical cam (209) is located inside chamber 2 (207).

5. A heavy-duty excavator for preventing hydraulic pump wear according to claim 4, characterized in that: Two movable spheres (210) are movably connected to one side of the cylindrical cam (209). One of the movable spheres (210) is movably sleeved at one end of each of the two oil supply shells (208). Each of the two oil supply shells (208) is slidably connected to a cylindrical tube (220). The two cylindrical tubes (220) are respectively opened at the top and bottom of the cylindrical block (219). An oil blocking disc (215) is fixedly connected to one side of the inside of each of the two cylindrical tubes (220). An oil supply hole (216) is opened through each of the two oil blocking discs (215).

6. A heavy-duty excavator for preventing hydraulic pump wear according to claim 5, characterized in that: One end of two damping springs (217) is fixedly connected to one side of the inner chamber (206), and the other end of each of the two damping springs (217) is fixedly connected to a small sphere (218). Each of the two small spheres (218) makes contact with an oil-blocking disc (215).

7. A heavy-duty excavator for preventing hydraulic pump wear according to claim 5, characterized in that: A Y-shaped tube (211) is opened through the inside of the oil tank (208). A control tube (214) is fixedly connected to one side of the inside of the Y-shaped tube (211). One end of a spring (213) is fixedly sleeved on one side of the control tube (214). The other end of the spring (213) is movably connected to a small ball (212). The small ball (212) is slidably connected to the Y-shaped tube (211).

8. A heavy-duty excavator for preventing hydraulic pump wear according to claim 4, characterized in that: The first rotating shaft (203) is fixedly sleeved with a first bevel gear (13), the first bevel gear (13) meshes with a second bevel gear (14), the second bevel gear (14) is fixedly connected to one end of the second rotating shaft (15), the other end of the second rotating shaft (15) is fixedly connected to a water pump impeller (16), and the water pump impeller (16) movably contacts the inner wall of the first water pipe (4).

9. A heavy-duty excavator for preventing hydraulic pump wear according to claim 1, characterized in that: The control rod (92) is fixedly connected to the first column rod (98) on its periphery. The first column rod (98) is movably connected to one end of the connecting rod (97). The other end of the connecting rod (97) is movably connected to the third column rod (910). The third column rod (910) is fixedly connected to the periphery of the moving rod (911). The middle part of the connecting rod (97) is rotatably sleeved with the second column rod (99). The second column rod (99) is fixedly connected to the bottom surface inside the controller housing (913).

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