Diesel-electricity dual-purpose excavator

Abstract

The invention discloses a diesel-electric dual-purpose excavator, and relates to the technical field of excavators. The excavator comprises an excavator body and an internal combustion engine set, the internal combustion engine set is connected to the excavator body and used for driving the excavator body to move, and an internal combustion engine clutch connected with an output shaft of the internal combustion engine set and an input shaft of a gearbox and a three-phase asynchronous motor set are arranged in the excavator body. The three-phase asynchronous motor unit is connected to the excavator body and used for driving the excavator body to move. Through cooperation of a first motor, a rotating rod, a second motor, a threaded rod, a threaded sleeve and a wiring guide block, an output shaft of the first motor can make the rotating rod rotate, a cable wound on the surface of the rotating rod can be paid off through rotation of the rotating rod, the cable can pass through the wiring guide block, and the cable is wound on the surface of the rotating rod. Therefore, the problem that the cable is wound in the pay-off process or the cable is broken by the excavator main body due to the fact that the cable is not released in time can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of excavators, in particular to a dual-purpose diesel-electric excavator. BACKGROUND

[0002] As a common engineering machinery, excavators usually adopt diesel engines as power sources to drive hydraulic components to work through hydraulic oil pumps. However, the traditional diesel driving mode has problems such as high noise, high energy consumption and serious pollution, and is limited in many aspects especially in urban construction. In order to alleviate these problems, some excavators have begun to use electric driving systems, which provide power for electric motors through batteries or external power sources, and then drive hydraulic oil pumps to run. However, the electrically driven excavator still faces problems such as short endurance time, inconvenient power connection and easy damage of power lines. Despite this, electric driving still has great development potential and may become an important choice for reducing environmental pollution and improving work efficiency in the future.

[0003] A patent with the publication number CN112627276A discloses an excavator with an automatic walking system, which includes a Beidou navigation system, a camera, a distance sensor, a speed sensor, a steering sensor, a processor and a controller. The controller is used to control the boom cylinder, the stick cylinder, the bucket cylinder, the left walking device and the right walking device.

[0004] However, the current excavator has the following problems: Since the electric excavator is powered only by a driving motor, the excavator is difficult to work outside the length of the cable. Although the electric excavator can store or deploy the cable, it is difficult to control the position of the cable on the ground when the excavator moves, which may cause the cable to be easily entangled / broken and the construction efficiency to be low due to the need for additional manpower to monitor the cable. Therefore, we propose a dual-purpose diesel-electric excavator. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a dual-purpose diesel-electric excavator to solve the problems raised in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a diesel-electric dual-purpose excavator, including an excavator body, an internal combustion engine unit, the internal combustion engine unit being connected to the excavator body and used to drive the excavator body to move, an internal combustion engine clutch connecting the output shaft of the internal combustion engine unit and the input shaft of the gearbox being provided inside the excavator body, a three-phase asynchronous motor unit, the three-phase asynchronous motor unit being connected to the excavator body and used to drive the excavator body to move, a motor clutch connecting the output shaft of the three-phase asynchronous motor unit and the input shaft of the gearbox being provided inside the excavator body, a cable connected to an external power source being connected to the wiring terminals of the three-phase asynchronous motor unit, an interlock device, the interlock device being connected to the excavator body and used to ensure that the motor clutch and the internal combustion engine clutch cannot be engaged simultaneously, a mechanical arm, the mechanical arm (8) being connected to the excavator body and driven by a hydraulic system, and a moving part, the moving part being connected to the excavator body and used to move and position the cable, the moving end of the moving part being fixed with a cable guide block for guiding the cable.

[0007] According to the above technical solution, the moving part includes two support blocks located on the side of the excavator body, a rotating rod disposed between the two support blocks for winding the cable, a motor 1 disposed below the side of one of the support blocks for driving the rotating rod, a threaded rod disposed on the two support blocks for rotating, a motor 2 disposed on the side of one of the support blocks for driving the threaded rod, and a threaded sleeve disposed on the surface of the threaded rod for moving the cable guide block.

[0008] According to the above technical solution, a fixing plate is fixedly connected to the side of the wiring guide block, an electric push rod is fixedly connected to the side of the fixing plate, and a U-shaped guide block is fixedly connected to the telescopic end of the electric push rod.

[0009] According to the above technical solution, the side of the fixing plate is provided with an anti-damage device, which includes a storage box on the side of the fixing plate, a telescopic nozzle on the top of the storage box and connected thereto, an L-shaped pressing member on the side of the storage box and connected thereto, a limiting block on the side of the U-shaped guide block and fixing the nozzle of the telescopic nozzle, and a rotating abutment member on the outer wall of the end of the rotating rod away from the motor.

[0010] According to the above technical solution, the rotating contact component includes a rotating ring located on the outer wall side of the rotating rod away from the motor, an elastic telescopic block disposed on the outer wall of the rotating ring, and a hemispherical block disposed on the side of the telescopic end of the elastic telescopic block.

[0011] According to the above technical solution, the pressing end of the L-shaped pressing component is located on the displacement trajectory of the hemispherical block, and the L-shaped pressing component is used to control the luminescent agent inside the storage box to be sprayed out through the telescopic nozzle.

[0012] According to the technical scheme, the anti-scratching device is arranged between the two supporting blocks, the anti-scratching device comprises a track block arranged between the two supporting blocks, a moving block arranged on the outer wall of the track block for movement, a connecting block arranged on the side of the moving block for fixing the wire guiding block, an elastic telescopic rod arranged on the top of the moving block and capable of telescoping, a triangular block arranged on the outer wall of the telescopic end of the elastic telescopic rod, a pressure receiving block arranged on the side of the triangular block, and a resisting block arranged on the side of the U-shaped guiding block and used for pushing the pressure receiving block.

[0013] According to the technical scheme, the pressure receiving block is located on the displacement track of the resisting block, and the central axis of the U-shaped guiding block and the central axis of the triangular block are located on the same horizontal line.

[0014] The present application provides a dual-purpose excavator with diesel and electricity. It has the following advantages:

[0015] (1) The present application cooperates the motor one, the rotating rod, the motor two, the threaded rod, the threaded sleeve and the wire guiding block, so that the output shaft of the motor one rotates the rotating rod, the rotation of the rotating rod unwinds the cable wound on the surface of the rotating rod, and the cable passes through the wire guiding block, thereby avoiding the problem that the cable is wound or not unwound in time due to winding, causing the main body of the excavator to be pulled off when the distance moved by the main body of the excavator is longer than the length of the cable. When the distance moved by the main body of the excavator is longer than the length of the cable, the worker removes the cable from the terminal of the three-phase asynchronous motor set, and then locks the motor clutch through the interlock, so that the clutch of the internal combustion engine can be used, thereby realizing the cooperation of the three-phase asynchronous motor set and the internal combustion engine, and avoiding the problem that the main body of the excavator is difficult to work outside the length of the cable. At the same time, the cooperation of the wire guiding block, the fixed plate, the electric push rod and the U-shaped guiding block makes the telescopic end of the electric push rod push the U-shaped guiding block into contact with the surface of the cable, thereby avoiding the situation that the cables of multiple main bodies of the excavator are entangled with each other. At the same time, the hydraulic system has powerful power transmission, accurate control and high load bearing capacity, which not only improves the working performance of the mechanical arm of the excavator, but also enhances the working efficiency and operation flexibility, and is an indispensable core part of modern excavators.

[0016] (2) The application sets the damage prevention device, so that the cooperation of the storage tank, the telescopic spray pipe, the limiting block, the L-shaped pressing piece, the rotating ring, the elastic telescopic block and the hemispherical block makes the L-shaped pressing piece control the noctilucent agent in the storage tank to be sprayed to the surface of the cable through the telescopic spray pipe, so that the staff can determine the position of the cable through the noctilucent agent on the surface of the cable in the dark tunnel, thereby avoiding the problem that the cable is often pressed when pushing the stone car, causing damage to the cable; meanwhile, the cooperation of the motor two, the threaded rod, the threaded sleeve, the wire guiding block, the L-shaped pressing piece, the rotating ring, the elastic telescopic block and the hemispherical block makes the wire guiding block no longer locate the fixed plate and the storage tank in the center of the rotating rod, so that the pressing end of the L-shaped pressing piece is no longer located on the rotating track of the hemispherical block, so that the L-shaped pressing piece does not control the noctilucent agent in the storage tank to be sprayed to the surface of the cable through the telescopic spray pipe when winding the cable, thereby avoiding the problem of waste of noctilucent agent.

[0017] (3) The application sets the scratch prevention device, so that the cooperation of the track block, the moving block, the connecting block, the elastic telescopic rod, the triangular block, the pressure receiving block and the resisting block makes the telescopic end of the elastic telescopic rod drive the triangular block to move downward, so that the triangular block is located in front of the U-shaped guide block, so that the triangular block can push the stone on the cable route to both sides, thereby avoiding the problem that the stone scratches the surface of the cable, causing damage to the cable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the whole application;

[0019] Figure 2 It is a structure schematic diagram of the motor two of the application;

[0020] Figure 3 It is a structure schematic diagram of the threaded sleeve of the application;

[0021] Figure 4 It is a structure schematic diagram of the storage tank of the application;

[0022] Figure 5 It is a structure schematic diagram of the L-shaped pressing piece of the application;

[0023] Figure 6 It is a structure schematic diagram of the triangular block of the application;

[0024] Figure 7 It is a structure schematic diagram of the moving block of the application.

[0025] In the figure: 1, excavator main body; 2, three-phase asynchronous motor group; 3, internal combustion engine group; 4, moving piece; 41, support block; 42, motor one; 43, rotating rod; 44, motor two; 45, threaded rod; 46, threaded sleeve; 47, wire guiding block; 48, fixed plate; 49, electric push rod; 410, U-shaped guiding block; 5, damage prevention device; 51, storage tank; 52, telescopic spray pipe; 53, limiting block; 54, L-shaped pressing piece; 55, rotating ring; 56, elastic telescopic block; 57, hemispherical block; 6, scratch prevention device; 61, track block; 62, moving block; 63, connecting block; 64, elastic telescopic rod; 65, triangular block; 66, pressure receiving block; 67, abutting block; 7, interlocking device; 8, mechanical arm. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0027] Please refer to Figures 1-7One embodiment of the present application is: a dual diesel-electric excavator, comprising an excavator body 1, an internal combustion engine set 3, the internal combustion engine set 3 is connected to the excavator body 1 and is used to drive the excavator body 1 to move, the inside of the excavator body 1 is provided with an internal combustion engine clutch connecting the output shaft of the internal combustion engine set 3 and the input shaft of the gearbox, a three-phase asynchronous motor set 2, the three-phase asynchronous motor set 2 is connected to the excavator body 1 and is used to drive the excavator body 1 to move, the inside of the excavator body 1 is provided with an electric motor clutch connecting the output shaft of the three-phase asynchronous motor set 2 and the input shaft of the gearbox, the terminal of the three-phase asynchronous motor set 2 is connected with a cable connected with an external power source, the three-phase asynchronous motor set 2 and the internal combustion engine set 3 together constitute a dual power source system, and are driven through a hydraulic execution system, at the same time the hydraulic pump is driven by the gearbox to supply oil to the boom cylinder and the bucket cylinder (it is prior art, this application does not describe too much), an interlock 7, the interlock 7 is connected to the excavator body 1 and is used to ensure that the electric motor clutch and the internal combustion engine clutch cannot be engaged at the same time, the interlock 7 prevents misoperation through physical means, a mechanical arm 8, the mechanical arm 8 is connected to the excavator body 1 and is driven by a hydraulic system, and a moving part 4, the moving part 4 is connected to the excavator body 1 and is used to move and position the cable, the moving end of the moving part 4 is fixed with a wire guiding block 47 for guiding the cable, the wire guiding block 47 is composed of an L-shaped block and a hollow ring, the cable is located inside the hollow ring, the moving part 4 includes two support blocks 41 located on the side of the excavator body 1, a rotating rod 43 arranged between the two support blocks 41 for winding the cable, a motor one 42 arranged below one side of one of the support blocks 41 for driving the rotating rod 43, a threaded rod 45 arranged between the two support blocks 41 for rotating, a motor two 44 arranged on one side of one of the support blocks 41 for driving the threaded rod 45, a threaded sleeve 46 arranged on the surface of the threaded rod 45 for moving the wire guiding block 47, and a limiting ring fixedly connected to the outer wall of the threaded rod 45 for limiting the movement of the threaded sleeve 46, through the above structure, the output shaft of the motor one 42 will make the rotating rod 43 rotate, the rotation of the rotating rod 43 will pay off the cable wound on the surface of the rotating rod 43, and the cable will pass through the wire guiding block 47, thereby avoiding the problem that the cable is wound or not paid out in time due to winding and is pulled off by the excavator body 1.

[0028] The side of the wire guiding block 47 is fixedly connected with a fixed plate 48, the side of the fixed plate 48 is fixedly connected with an electric push rod 49, the telescopic end of the electric push rod 49 is fixedly connected with a U-shaped guiding block 410, through the above structure, the telescopic end of the electric push rod 49 will push the U-shaped guiding block 410 into contact with the surface of the cable, thereby avoiding the cable scattered on the ground, causing multiple excavator bodies 1 to be entangled with each other.

[0029] The side of the fixed plate 48 is provided with a damage prevention device 5, which includes a storage tank 51 provided on the side of the fixed plate 48, used for storing luminescent agent, a telescopic spray pipe 52 provided on the top of the storage tank 51 and in communication therewith, which can make the luminescent agent sprayed out of the spray head of the telescopic spray pipe 52, an L-shaped pressing member 54 provided on the side of the storage tank 51 and in communication therewith, which works similarly to the principle of a watering can, and is composed of a pressing member and a spring pump, so as to realize resetting through the elastic force of the spring pump, and is used for controlling the luminescent agent in the storage tank 51 to be sprayed out of the telescopic spray pipe 52, a limiting block 53 provided on the side of the U-shaped guide block 410 and fixed at the spray opening of the telescopic spray pipe 52, which is used for fixing the spray opening of the telescopic spray pipe 52, and a rotating contact member provided on the outer wall of the rotary rod 43 away from the motor 42, which includes a rotating ring 55 located on the side of the outer wall of the rotary rod 43 away from the motor 42, and an elastic telescopic block 56 provided on the outer wall of the rotating ring 55, which can be compressed when the rotating ring 55 is rotated to the side of the excavator body 1, so as to avoid the influence of the excavator body 1 on the use of the elastic telescopic block 56 and a hemispherical block 57, which is provided on the side of the telescopic end of the elastic telescopic block 56 and can press the pressing end of the pressing member 54 in the process of rotation, and the pressing end of the L-shaped pressing member 54 is located on the displacement track of the hemispherical block 57. Through the above structure, the L-shaped pressing member 54 controls the luminescent agent in the storage tank 51 to be sprayed onto the surface of the cable through the telescopic spray pipe 52, so as to ensure that the workers can determine the position of the cable through the luminescent agent on the surface of the cable in the dark tunnel, thereby avoiding the problem that the cable is often pressed when pushing the stone car, resulting in damage to the cable.

[0030] In use, first, the cable connected with the three-phase asynchronous motor set 2 is connected with the external power supply, then the motor one 42 and the motor two 44 are started at the same time, the output shaft of the motor one 42 will make the rotating rod 43 rotate, the output shaft of the motor two 44 will make the threaded rod 45 rotate, at this time, the rotating rod 43 will pay off the cable, and the rotation of the threaded rod 45 will make the threaded sleeve 46 move, the movement of the threaded sleeve 46 will drive the cable guiding block 47 to move, because the threads on the surface of the threaded rod 45 are only half, so the threaded sleeve 46 will move to the center of the threaded rod 45, at this time, the motor one 42 and the motor two 44 are turned off, the cable guiding block 47 will make the cable located at the center of the rotating rod 43, then the staff drives the excavator main body 1, so that the cable is straightened along the ground, then the motor one 42 is started again, the output shaft of the motor one 42 will make the rotating rod 43 rotate, the rotation of the rotating rod 43 will pay off the cable wound on the surface of the rotating rod 43, the cable will pass through the cable guiding block 47, so that the problem that the cable is wound or not paid out in time due to winding and is pulled off by the excavator main body 1 can be avoided; When the cable guiding block 47 is located at the center of the rotating rod 43, the fixed plate 48, the electric push rod 49 and the U-shaped guiding block 410 are located at the center of the rotating rod 43, so after the cable is straightened along the ground, the electric push rod 49 is started, the telescopic end of the electric push rod 49 will push the U-shaped guiding block 410 in contact with the surface of the cable, so that the cable is not scattered on the ground, causing multiple excavator main bodies 1 to be wound with each other, when the moving distance of the excavator main body 1 is longer than the length of the cable, the staff removes the cable from the terminal of the three-phase asynchronous motor set 2, then the motor clutch is locked by the interlock 7, so that the clutch of the internal combustion engine can be used, so that the three-phase asynchronous motor set 2 and the internal combustion engine set 3 can be used together, which can avoid the problem that the excavator main body 1 is difficult to work beyond the length of the cable, at the same time, the hydraulic system has powerful power transmission, accurate control and high load bearing capacity, not only improves the working performance of the excavator mechanical arm, but also enhances the working efficiency and operation flexibility, which is an indispensable core part of modern excavators.

[0031] When the fixed plate 48 is located at the center of the rotating rod 43, the fixed plate 48 will drive the storage box 51 to be located at the center of the rotating rod 43, at this time, the pressing end of the L-shaped pressing piece 54 will be located on the rotating track of the hemispherical block 57, at the same time, the rotation of the rotating rod 43 will drive the rotating ring 55 to rotate, the rotation of the rotating ring 55 will drive the elastic expansion block 56 to rotate, the rotation of the elastic expansion block 56 will drive the hemispherical block 57 to rotate, the hemispherical block 57 will extrude the pressing end of the L-shaped pressing piece 54 in the process of rotating, so as to make the L-shaped pressing piece 54 control the noctilucent agent in the storage box 51 to be sprayed to the surface of the cable through the telescopic nozzle 52, so as to ensure that the workers can determine the position of the cable through the noctilucent agent on the surface of the cable in the dark tunnel, so as to avoid the problem that the cable is often pressed when the stone pushing trolley is pushed, and the cable is damaged; when the workers need to wind the cable, the motor two 44 is started, the output shaft of the motor two 44 will make the threaded rod 45 rotate, the rotation of the threaded rod 45 will make the wire guiding block 47 no longer located at the center of the rotating rod 43, so that the wire guiding block 47 will make the fixed plate 48 and the storage box 51 no longer located at the center of the rotating rod 43, at this time, the pressing end of the L-shaped pressing piece 54 will no longer be located on the rotating track of the hemispherical block 57, so that when the cable is wound, the L-shaped pressing piece 54 will not control the noctilucent agent in the storage box 51 to be sprayed to the surface of the cable through the telescopic nozzle 52, so as to avoid the problem of waste of the noctilucent agent.

[0032] It should be noted that, since the effective time of the noctilucent agent is 18 hours, and the excavator body 1 will return to the power supply connected to the cable after work every day, the noctilucent agent will be used again every day to ensure that the workers can determine the position of the cable in the tunnel.

[0033] Please refer to Figures 1-7On the basis of the above-mentioned embodiments, in another embodiment of the present application, the anti-scratching device 6 is arranged between the two support blocks 41, the anti-scratching device 6 comprises a track block 61 arranged between the two support blocks 41, a moving block 62 arranged on the outer wall of the track block 61 for movement, a connecting block 63 arranged on the side of the moving block 62 for fixing the wiring guide block 47, an elastic telescopic rod 64 arranged on the top of the moving block 62 and capable of telescoping, a triangular block 65 arranged on the outer wall of the telescopic end of the elastic telescopic rod 64, a pressure block 66 arranged on the side of the triangular block 65, an abutting block 67 arranged on the side of the U-shaped guide block 410 and used for pushing the pressure block 66, the pressure block 66 is located on the displacement track of the abutting block 67, the central axis of the U-shaped guide block 410 and the central axis of the triangular block 65 are located on the same horizontal line, through the arrangement of the above-mentioned structure, the telescopic end of the elastic telescopic rod 64 will drive the triangular block 65 to move downward, so that the triangular block 65 is located in front of the U-shaped guide block 410, thereby the triangular block 65 can push the stone on the cable route to both sides, so as to avoid the stone scratching the surface of the cable and causing damage to the cable.

[0034] In use, when the wiring guide block 47 moves to the center of the rotating rod 43, the movement of the wiring guide block 47 will drive the moving block 62 to move along the outer wall of the track block 61 through the connecting block 63, the movement of the moving block 62 will drive the elastic telescopic rod 64 to move, the movement of the elastic telescopic rod 64 will drive the triangular block 65, so that the triangular block 65 always maintains a horizontal position with the wiring guide block 47, when the U-shaped guide block 410 moves downward, the movement of the U-shaped guide block 410 will drive the abutting block 67 to move, the abutting block 67 will abut against the pressure block 66 during the movement and push the pressure block 66 downward, the downward movement of the pressure block 66 will stretch the telescopic end of the elastic telescopic rod 64, the telescopic end of the elastic telescopic rod 64 will drive the triangular block 65 to move downward, so that the triangular block 65 is located in front of the U-shaped guide block 410, thereby the triangular block 65 can push the stone on the cable route to both sides, so as to avoid the stone scratching the surface of the cable and causing damage to the cable.

[0035] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A diesel-electric dual-purpose excavator, characterized in that: include: Excavator body (1); An internal combustion engine unit (3) is connected to the excavator body (1) and is used to drive the excavator body (1) to move. An internal combustion engine clutch is provided inside the excavator body (1) to connect the output shaft of the internal combustion engine unit (3) and the input shaft of the gearbox. A three-phase asynchronous motor set (2) is connected to the excavator body (1) and is used to drive the excavator body (1) to move. The excavator body (1) is provided with a motor clutch that connects the output shaft of the three-phase asynchronous motor set (2) to the input shaft of the gearbox. The terminals of the three-phase asynchronous motor set (2) are connected to a cable that is connected to an external power source. Interlock (7), which is connected to the excavator body (1) and is used to ensure that the electric motor clutch and the internal combustion engine clutch cannot be engaged at the same time; A robotic arm (8) is connected to the excavator body (1) and driven by a hydraulic system; And a moving part (4), which is connected to the excavator body (1) and used to move and position the cable, and the moving end of the moving part (4) is fixed with a cable guide block (47) for guiding the cable.

2. The diesel-electric dual-purpose excavator according to claim 1, characterized in that: The movable component (4) includes two support blocks (41) located on the side of the excavator body (1), a rotating rod (43) disposed between the two support blocks (41) for winding the cable, a motor (42) disposed below the side of one of the support blocks (41) for driving the rotating rod (43), a threaded rod (45) disposed on the two support blocks (41) for rotating, a motor (44) disposed on the side of one of the support blocks (41) for driving the threaded rod (45), and a threaded sleeve (46) disposed on the surface of the threaded rod (45) for moving the cable guide block (47).

3. The diesel-electric dual-purpose excavator according to claim 2, characterized in that: A fixing plate (48) is fixedly connected to the side of the wiring guide block (47), an electric push rod (49) is fixedly connected to the side of the fixing plate (48), and a U-shaped guide block (410) is fixedly connected to the telescopic end of the electric push rod (49).

4. A diesel-electric dual-purpose excavator according to claim 3, characterized in that: The side of the fixed plate (48) is provided with an anti-damage device (5). The anti-damage device (5) includes a storage box (51) provided on the side of the fixed plate (48), a telescopic nozzle (52) provided on the top of the storage box (51) and communicating with it, an L-shaped pressing member (54) provided on the side of the storage box (51) and communicating with it, a limiting block (53) provided on the side of the U-shaped guide block (410) and fixing the nozzle of the telescopic nozzle (52), and a rotating abutment member provided on the outer wall of the end of the rotating rod (43) away from the motor (42).

5. A diesel-electric dual-purpose excavator according to claim 4, characterized in that: The rotating abutment includes a rotating ring (55) located on the outer wall side of the rotating rod (43) away from the motor (42), an elastic telescopic block (56) disposed on the outer wall of the rotating ring (55), and a hemispherical block (57) disposed on the telescopic end side of the elastic telescopic block (56).

6. A diesel-electric dual-purpose excavator according to claim 4, characterized in that: The pressing end of the L-shaped pressing member (54) is located on the displacement trajectory of the hemispherical block (57). The L-shaped pressing member (54) is used to control the luminescent agent inside the storage box (51) to be sprayed out through the telescopic nozzle (52).

7. A diesel-electric dual-purpose excavator according to claim 3, characterized in that: A scratch-resistant device (6) is provided between the two support blocks (41). The scratch-resistant device (6) includes a track block (61) provided between the two support blocks (41), a movable block (62) provided on the outer wall of the track block (61) for moving, a connecting block (63) provided on the side of the movable block (62) for fixing the wiring guide block (47), an elastic telescopic rod (64) provided on the top of the movable block (62) and retractable, a triangular block (65) provided on the outer wall of the telescopic end of the elastic telescopic rod (64), a pressure block (66) provided on the side of the triangular block (65), and an abutment block (67) provided on the side of the U-shaped guide block (410) for pushing the pressure block (66).

8. A diesel-electric dual-purpose excavator according to claim 7, characterized in that: The pressure block (66) is located on the displacement trajectory of the contact block (67), and the central axis of the U-shaped guide block (410) and the central axis of the triangular block (65) are on the same horizontal line.

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