Towing cable frame of towing hydraulic excavator and towing hydraulic excavator

Abstract

The towing cable frame is arranged in the towing hydraulic excavator, the towing hydraulic excavator comprises a main frame and a current collector, a cable hole coated with rubber is formed in the middle of the main frame, a power supply cable of the current collector is led out through the cable hole, and the towing cable is arranged in the cable hole. The cable towing frame comprises a fixing assembly, a rotating assembly, an access assembly and a cable assembly, the rotating assembly is connected with the fixing assembly and used for adjusting the moving range of the cable assembly, the access assembly is arranged at the front end of the rotating assembly and used for connecting a power source to the cable assembly, and the cable assembly is arranged on the fixing assembly, the rotating assembly and the access assembly and used for connecting the cable assembly with the power source. The power supply is connected with the current collector through the cable hole and used for supplying power to the current collector. The overall structure is simple, the cable moving range is effectively widened, power connection is facilitated, cable connectors are convenient to disassemble, assemble and maintain, and the installation efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of excavators, and particularly relates to a tow cable frame of a towed electric hydraulic excavator and the towed electric hydraulic excavator. BACKGROUND

[0002] The towed electric hydraulic excavator is an important classification of electric excavators, and is mainly driven by power supply through a cable. The power cable of the electric excavator is led out from the rear of a track frame and finally reaches a power supply cabinet. However, the cable between the track frame and the power supply cabinet lacks protection during the construction of the excavator, and is easily damaged by the track and four wheels of the electric excavator.

[0003] In the prior art, a drum is used to protect the cable, but the drum structure is complex, and it takes time and effort to disassemble and assemble during maintenance, and the maintenance cost is high, thereby seriously affecting the working efficiency of the excavator. SUMMARY

[0004] To at least partially solve the technical problems existing in the prior art, the present application provides a tow cable frame of a towed electric hydraulic excavator and the towed electric hydraulic excavator.

[0005] In one aspect of the present application, a tow cable frame of a towed electric hydraulic excavator is provided, which comprises a fixing assembly, a rotating assembly, an access assembly and a cable assembly. The rotating assembly is connected with the fixing assembly and is used to adjust the activity range of the cable assembly. The access assembly is arranged at the front end of the rotating assembly and is used to lead the cable assembly to the power source. The cable assembly is arranged on the fixing assembly, the rotating assembly and the access assembly and is connected with the current collector through the cable hole and is used to supply power to the current collector. In the present application:

[0006] The fixing assembly comprises a connecting fixed plate, an upper cover plate, a lower cover plate, a first side plate and a second side plate. The upper cover plate and the lower cover plate are symmetrically welded on the connecting fixed plate. The first side plate is detachably arranged between the upper cover plate and the lower cover plate in the front half. The second side plate is detachably arranged between the upper cover plate and the lower cover plate in the rear half.

[0007] The rotating assembly comprises a rotating plate, a rotating pin and a limiting pin. The rotating plate is provided with a rotating hole in the middle of the front end. The rotating plate is provided with three limiting holes in the directions of 0°, ±60° around the rotating hole. The rotating pin is rotatably connected with the upper cover plate and the lower cover plate through the rotating hole. The limiting pin is limitingly connected with the upper cover plate and the lower cover plate through one of the limiting holes.

[0008] The access assembly comprises a connecting pin, a steel wire rope and a pipe clamp assembly. One end of the steel wire rope is connected with the rotating plate through the connecting pin. The pipe clamp assembly is arranged at the other end of the steel wire rope.

[0009] Further, in the above-mentioned towed hydraulic excavator cable rack, the first side plate front end is provided with a first slot, a first plug is installed in the first slot, a long round hole is opened on the upper cover plate, the first side plate is fixedly connected with the upper cover plate by sequentially passing through the long round hole and the first slot through the first plug, the first side plate rear end is provided with a second slot, and a second plug is installed in the second slot.

[0010] Further, in the above-mentioned towed hydraulic excavator cable rack, the second side plate front end is provided with a third slot, the second side plate front end is fixedly connected with the second side plate by sequentially passing through the second slot and the third slot through the second plug, the second side plate inner side is provided with a fourth slot, a third plug is installed in the fourth slot, a plug hole is opened on the upper cover plate, and the second side plate rear end is fixedly connected with the upper cover plate by sequentially passing through the plug hole and the fourth slot through the third plug.

[0011] Further, in the above-mentioned towed hydraulic excavator cable rack, the pipe clamp assembly includes two arc-shaped clamping plates, rubber sheaths and U-shaped bolts, the rubber sheaths are respectively arranged on the two arc-shaped clamping plates, the two arc-shaped clamping plates are symmetrically arranged to form a circular ring type, the two arc-shaped clamping plates are connected through the U-shaped bolts, and the U-shaped bolts are sleeved with the steel wire rope.

[0012] Further, in the above-mentioned towed hydraulic excavator cable rack, the cable assembly includes a cable fixing seat, a cable, a cable plug and a cable socket, the cable fixing seat is arranged at the rear end of the rotating plate and between the rear end of the upper cover plate and the lower cover plate, the cable plug is arranged at one end of the cable, the cable socket is arranged in the middle of the connecting fixed plate, and the cable sequentially passes through the two arc-shaped clamping plates, the cable fixing seat arranged at the rear end of the rotating plate and the cable fixing seat arranged between the rear end of the upper cover plate and the lower cover plate, and is connected with the cable socket through the cable plug.

[0013] In another aspect of the present application, a towed hydraulic excavator is provided, which comprises a main frame and a current collector, the main frame is provided with a rubber-coated cable hole, the current collector is provided with a power cable which is led out through the cable hole, and a towed cable rack is arranged on the main frame, the towed cable rack comprises a fixing assembly, a rotating assembly, an access assembly and a cable assembly, the rotating assembly is connected with the fixing assembly and is used for adjusting the activity range of the cable assembly, the access assembly is arranged at the front end of the rotating assembly and is used for leading the cable assembly to access the power supply, and the cable assembly is arranged on the fixing assembly, the rotating assembly and the access assembly and is connected with the current collector through the cable hole and is used for powering the current collector.

[0014] The fixing assembly comprises a connecting fixed plate, an upper cover plate, a lower cover plate, a first side plate and a second side plate, the upper cover plate and the lower cover plate are symmetrically welded on the connecting fixed plate, the first side plate is detachably arranged in the front half between the upper cover plate and the lower cover plate, and the second side plate is detachably arranged in the rear half between the upper cover plate and the lower cover plate.

[0015] The rotating assembly comprises a rotating plate, a rotating pin shaft and a limiting pin shaft, the rotating plate is provided with a rotating hole in the middle of the front end, the rotating plate is provided with three limiting holes in the directions of 0°, ±60° around the rotating hole, the rotating pin shaft is rotatably connected with the upper cover plate and the lower cover plate through the rotating hole, and the limiting pin shaft is limitingly connected with the upper cover plate and the lower cover plate through one of the limiting holes.

[0016] The connecting assembly comprises a connecting pin, a steel wire rope and a pipe clamp assembly, one end of the steel wire rope is connected with the rotating plate through the connecting pin, and the pipe clamp assembly is arranged at the other end of the steel wire rope.

[0017] Further, in the above-mentioned trailing electric hydraulic excavator, the first side plate is provided with a first slot at the front end, a first bolt is installed in the first slot, an oblong hole is formed in the upper cover plate, the first side plate is fixedly connected with the upper cover plate by sequentially penetrating the oblong hole and the first slot through the first bolt, and the first side plate is provided with a second slot at the rear end, and a second bolt is installed in the second slot.

[0018] Further, in the above-mentioned trailing electric hydraulic excavator, the second side plate is provided with a third slot at the front end, the second side plate is fixedly connected with the second side plate by sequentially penetrating the second slot and the third slot through the second bolt at the front end of the second side plate, the second side plate is provided with a fourth slot at the inner side, a third bolt is installed in the fourth slot, an insertion hole is formed in the upper cover plate, and the rear end of the second side plate is fixedly connected with the upper cover plate by sequentially penetrating the insertion hole and the fourth slot through the third bolt.

[0019] Further, in the above-mentioned trailing electric hydraulic excavator, the pipe clamp assembly comprises two arc-shaped clamping plates, rubber sheaths and U-shaped bolts, the rubber sheaths are arranged on the two arc-shaped clamping plates respectively, the two arc-shaped clamping plates are symmetrically arranged to form a circular ring type, the two arc-shaped clamping plates are connected through the U-shaped bolts, and the U-shaped bolts are sleeved with the steel wire rope.

[0020] Further, in the above-mentioned trailing cable hydraulic excavator, the cable assembly comprises a cable fixing seat, a cable, a cable plug and a cable socket, the cable fixing seat is arranged at the rear end of the rotating plate and the rear end between the upper cover plate and the lower cover plate respectively, the cable plug is arranged at one end of the cable, the cable socket is arranged in the middle of the connecting fixing plate, and the cable sequentially passes through the two arc-shaped clamping plates, the cable fixing seat arranged at the rear end of the rotating plate and the cable fixing seat arranged at the rear end between the upper cover plate and the lower cover plate, and is connected with the cable socket through the cable plug.

[0021] The trailing cable frame of the trailing cable hydraulic excavator and the trailing cable hydraulic excavator have the following advantages and beneficial effects:

[0022] The whole structure of the trailing cable hydraulic excavator is simple, the cable movement range is effectively improved through the cooperation of the rotating assembly and the access assembly, the power supply is conveniently accessed, the cable joint is conveniently disassembled, repaired and maintained through the arrangement of the cable assembly, the first side plate and the second side plate, and the installation efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only used to further understand the embodiments of the present application and form a part of the present application. For those skilled in the art, other drawings can also be obtained without creative labor based on these drawings. In the drawings:

[0024] Figure 1 It is a whole structure schematic diagram of the trailing cable hydraulic excavator of the present application;

[0025] Figure 2 It is a whole structure schematic diagram of the trailing cable frame of the trailing cable hydraulic excavator of the present application;

[0026] Figure 3 It is a rotating assembly structure schematic diagram of the trailing cable frame of the trailing cable hydraulic excavator of the present application;

[0027] Figure 4 It is a first side plate structure schematic diagram of the trailing cable frame of the trailing cable hydraulic excavator of the present application;

[0028] Figure 5 It is a second side plate structure schematic diagram of the trailing cable frame of the trailing cable hydraulic excavator of the present application.

[0029] Explanation of reference signs:

[0030] 10: main frame, 20: current collector, 30: cable hole;

[0031] 1: Fixed assembly; 11: Connecting mounting plate;

[0032] 12: Top cover plate; 121: Oblong hole; 122: Insertion hole;

[0033] 13: Lower cover plate;

[0034] 14: First side plate; 141: First slot; 142: First pin; 143: Second slot; 144: Second pin;

[0035] 15: Second side plate; 151: Third slot; 152: Fourth slot; 153: Third pin;

[0036] 2: Rotating assembly; 21: Rotating plate; 22: Rotating hole; 23: Limiting hole; 24: Rotating pin; 25: Limiting pin;

[0037] 3: Connecting assembly; 31: Connecting pin; 32: Steel wire rope;

[0038] 33: Pipe clamp assembly; 331: Arc-shaped clamp plate; 332: Rubber sheath; 333: U-bolt;

[0039] 4: Cable assembly, 41: Cable holder, 42: Cable, 43: Cable plug, 44: Cable socket. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] like Figures 1 to 5 As shown, in one aspect of the present invention, a towing cable frame for an electro-hydraulic excavator is provided. The towing cable frame includes a fixed assembly 1, a rotating assembly 2, an access assembly 3, and a cable assembly 4. The rotating assembly 2 is connected to the fixed assembly 1 and is used to adjust the range of motion of the cable assembly 4. The access assembly 3 is disposed at the front end of the rotating assembly 2 and is used to connect power to the cable assembly 4. The cable assembly 4 is disposed on the fixed assembly 1, the rotating assembly 2, and the access assembly 3, and is connected to a current collector 20 through a cable hole 30 for supplying power to the current collector 20.

[0042] The fixing assembly 1 comprises a connecting fixed plate 11, an upper cover plate 12, a lower cover plate 13, a first side plate 14 and a second side plate 15, the upper cover plate 12 and the lower cover plate 13 are symmetrically welded on the connecting fixed plate 11, the first side plate 14 is detachably arranged between the upper cover plate 12 and the lower cover plate 13 in the front half, and the second side plate 15 is detachably arranged between the upper cover plate 12 and the lower cover plate 13 in the rear half;

[0043] The rotating assembly 2 comprises a rotating plate 21, a rotating pin 24 and a limiting pin 25, the rotating plate 21 is provided with a rotating hole 22 in the middle of the front end, the rotating plate 21 surrounds the rotating hole 22, and three limiting holes 23 are arranged at 0°, ±60° directions, so that the rotating plate 21 is adjusted within a range of 120°, and the movement range of the cable when connected with the power supply is ensured, the rotating pin 24 is rotatably connected with the upper cover plate 12 and the lower cover plate 13 through the rotating hole 22, and the limiting pin 25 is limitingly connected with the upper cover plate 12 and the lower cover plate 13 through one of the limiting holes 23;

[0044] The connecting assembly 3 comprises a connecting pin 31, a steel wire rope 32 and a pipe clamp assembly 33, one end of the steel wire rope 32 is connected with the rotating plate 21 through the connecting pin 31, and the pipe clamp assembly 33 is arranged at the other end of the steel wire rope 32, so that the movement range of the cable is improved by using the flexibility of the steel wire rope 32, and the connection with the power supply is facilitated.

[0045] Further, in the above-mentioned cable drag frame of the hydraulic excavator, the first side plate 14 is provided with a first slot 141 at the front end, a first bolt 142 is installed in the first slot 141, a long circular hole 121 is formed in the upper cover plate 12, the first side plate 14 is fixedly connected with the upper cover plate 12 by sequentially penetrating the long circular hole 121 and the first slot 141 through the first bolt 142, the first side plate 14 is provided with a second slot 143 at the rear end, a second bolt 144 is installed in the second slot 143, so that the first side plate 14 is rotated and opened around the second bolt 144 after the first bolt 142 is pulled out, and the cable assembly 4 is facilitated to be installed or maintained.

[0046] Further, in the above-mentioned cable drag frame of the hydraulic excavator, the second side plate 15 is provided with a third slot 151 at the front end, the second side plate 15 is fixedly connected with the second side plate 15 by sequentially penetrating the second slot 143 and the third slot 151 through the second bolt 144 at the front end of the second side plate 15, the second side plate 15 is provided with a fourth slot 152 at the inner side, a third bolt 153 is installed in the fourth slot 152, a plug hole 122 is formed in the upper cover plate 12, the second side plate 15 is fixedly connected with the upper cover plate 12 by sequentially penetrating the plug hole 122 and the fourth slot 152 through the third bolt 153 at the rear end of the second side plate 15, so that the second side plate 15 is rotated and opened around the second bolt 144 after the third bolt 153 is pulled out, and the cable assembly 4 is facilitated to be introduced into the connecting assembly 3.

[0047] Further, in the cable drag frame of the electric drag hydraulic excavator, the pipe clamp assembly 33 comprises two arc-shaped clamping plates 331, rubber sheaths 332 and U-shaped bolts 333, the rubber sheaths 332 are arranged on the two arc-shaped clamping plates 331 respectively, the two arc-shaped clamping plates 331 are symmetrically arranged to form a circular ring type, the two arc-shaped clamping plates 331 are connected through the U-shaped bolts 333, the U-shaped bolts 333 are sleeved with the steel wire rope 32, so that the cable is effectively fixed, and damage to the cable during fixing is avoided.

[0048] Further, in the cable drag frame of the electric drag hydraulic excavator, the cable assembly 4 comprises a cable fixing seat 41, a cable 42, a cable plug 43 and a cable socket 44, the cable fixing seat 41 is arranged at the rear end of the rotating plate 21 and between the upper cover plate 12 and the lower cover plate 13, the cable plug 43 is arranged at one end of the cable 42, the cable socket 44 is arranged in the middle of the connecting fixing plate 11, the cable 42 passes through the two arc-shaped clamping plates 331, the cable fixing seat 41 arranged at the rear end of the rotating plate 21 and the cable fixing seat 41 arranged between the upper cover plate 12 and the lower cover plate 13 in sequence, and is connected with the cable socket 44 through the cable plug 43, so that the cable 42 can be quickly connected and fixed, and can be quickly removed during replacement.

[0049] In another aspect of the present application, a cable drag hydraulic excavator is provided, which comprises a main frame 10 and a current collector 20, the main frame 10 is provided with a rubber-coated cable hole 30, the current collector 20 is provided with a power cable which is led out through the cable hole 30, and the cable drag frame is arranged on the main frame 10.

[0050] The cable drag frame of the electric drag hydraulic excavator and the installation process of the electric drag hydraulic excavator are as follows:

[0051] In the installation, first, the cable of the current collector 20 is led out through the cable hole 30 and connected with the cable socket 44, then the cable socket 44 is fixed in the middle of the connecting fixed plate 11, at this time, the connecting fixed plate 11 is fixedly connected with the main frame 10 through the bolt, so that the tow cable frame is connected with the tow electric hydraulic excavator as a whole, at this time, the first bolt 142 limiting the first side plate 14 and the third bolt 153 limiting the second side plate 15 are pulled out, so that the first side plate 14 and the second side plate 15 are opened by rotating around the second bolt 144, at this time, the cable fixing seat 41 is installed on the fixed assembly 1 and the rotating assembly 2 respectively, the cable plug 43 is connected with the cable socket 44, and the other end of the cable 42 is sequentially led through the cable fixing seat 41, at this time, the position needing to be connected with the power supply is determined, the rotating plate 21 is rotated around the rotating pin 24 to the position of the power supply, the rotating plate 21 is locked through the limiting pin 25, at this time, the leading-out part of the cable 42 is clamped through the arc-shaped clamping plate 331, and the rubber sheath 332 is used to increase the friction between the cable 42 and the arc-shaped clamping plate 331 and effectively protect the cable 42 from being damaged, since the steel wire rope 32 is a flexible piece, the leading-out direction of the cable 42 can be controlled at will to be connected with the power supply, and the difficulty of connecting with the power supply is effectively reduced.

[0052] In summary, compared with the prior art, the tow cable frame of the tow electric hydraulic excavator and the tow electric hydraulic excavator have the following advantages and beneficial effects: the overall structure is simple, the rotating assembly and the connecting assembly are matched, the movable range of the cable is effectively improved, the connection with the power supply is facilitated, the cable connector is convenient to disassemble, repair and maintain, and the installation efficiency is effectively improved.

[0053] It should be noted that, in this document, unless otherwise explicitly specified and limited, the term "connection" or its synonyms should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, can be mechanical connection, can also be electrical connection, can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above-mentioned term in the present application according to the specific situation. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. At the same time, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. In addition, "front", "back", "left", "right", "up", "down" in this document are with reference to the placement state shown in the drawings.

[0054] It should be finally pointed out that the above embodiments are only used for illustrating the technical solutions of the present application, but not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A towing cable frame for a trolley-hydraulic excavator, the towing cable frame being disposed in the trolley-hydraulic excavator, the trolley-hydraulic excavator including a main frame and a current collector, wherein a rubber-coated cable hole is provided in the middle of the main frame, and the power supply cable of the current collector is led out through the cable hole, characterized in that, The cable support includes a fixed assembly, a rotating assembly, an access assembly, and a cable assembly. The rotating assembly is connected to the fixed assembly and is used to adjust the range of motion of the cable assembly. The access assembly is located at the front end of the rotating assembly and is used to connect power to the cable assembly. The cable assembly is disposed on the fixed assembly, the rotating assembly, and the access assembly, and is connected to the current collector through the cable hole to supply power to the current collector. The fixing assembly includes a connecting fixing plate, an upper cover plate, a lower cover plate, a first side plate, and a second side plate. The upper cover plate and the lower cover plate are symmetrically welded to the connecting fixing plate. The first side plate is detachably disposed in the front half between the upper cover plate and the lower cover plate, and the second side plate is detachably disposed in the rear half between the upper cover plate and the lower cover plate. The rotating assembly includes a rotating plate, a rotating pin, and a limiting pin. The rotating plate has a rotating hole at the center of its front end. The rotating plate has three limiting holes around the rotating hole in the 0° and ±60° directions. The rotating pin is rotatably connected to the upper cover plate and the lower cover plate through the rotating hole. The limiting pin is limitedly connected to the upper cover plate and the lower cover plate through one of the limiting holes. The connection assembly includes a connecting pin, a wire rope, and a pipe clamp assembly. One end of the wire rope is connected to the rotating plate via the connecting pin, and the pipe clamp assembly is located at the other end of the wire rope.

2. The cable carrier of the electric hydraulic excavator according to claim 1, characterized in that, The first side plate has a first slot at its front end, and a first pin is installed in the first slot. The upper cover plate has an elongated hole. The first side plate is fixedly connected to the upper cover plate by the first pin passing through the elongated hole and the first slot in sequence. The first side plate has a second slot at its rear end, and a second pin is installed in the second slot.

3. The cable carrier of the electric hydraulic excavator according to claim 2, characterized in that, The second side plate has a third slot at its front end. The front end of the second side plate is fixedly connected to the second side plate by passing through the second slot and the third slot in sequence via the second pin. The second side plate has a fourth slot at its inner side. The third pin is installed in the fourth slot. The upper cover plate has a socket hole. The rear end of the second side plate is fixedly connected to the upper cover plate by passing through the socket hole and the fourth slot in sequence via the third pin.

4. The cable carrier of the electric hydraulic excavator according to claim 1, characterized in that, The pipe clamp assembly includes two arc-shaped clamps, a rubber sheath, and a U-bolt. The rubber sheath is respectively disposed on the two arc-shaped clamps, which are symmetrically arranged to form a ring. The two arc-shaped clamps are connected by the U-bolt, which is sleeved with the wire rope.

5. The cable carrier of the electric hydraulic excavator according to claim 4, characterized in that, The cable assembly includes a cable holder, a cable, a cable plug, and a cable socket. The cable holder is respectively located at the rear end of the rotating plate and at the rear end between the upper cover plate and the lower cover plate. The cable plug is located at one end of the cable. The cable socket is located in the middle of the connecting fixing plate. The cable passes through the two arc-shaped clamps, the cable holder located at the rear end of the rotating plate, and the cable holder located at the rear end between the upper cover plate and the lower cover plate in sequence, and is connected to the cable socket through the cable plug.

6. A tractor-mounted hydraulic excavator, the tractor-mounted hydraulic excavator comprising a main frame and a current collector, characterized in that, A rubber-coated cable hole is provided in the middle of the main frame. The power supply cable for the current collector is led out through the cable hole. A cable tow bracket is provided on the main frame. The cable tow bracket includes a fixed assembly, a rotating assembly, an access assembly, and a cable assembly. The rotating assembly is connected to the fixed assembly and is used to adjust the range of motion of the cable assembly. The access assembly is located at the front end of the rotating assembly and is used to connect power to the cable assembly. The cable assembly is located on the fixed assembly, the rotating assembly, and the access assembly, and is connected to the current collector through the cable hole to supply power to the current collector. The fixing assembly includes a connecting fixing plate, an upper cover plate, a lower cover plate, a first side plate, and a second side plate. The upper cover plate and the lower cover plate are symmetrically welded to the connecting fixing plate. The first side plate is detachably disposed in the front half between the upper cover plate and the lower cover plate, and the second side plate is detachably disposed in the rear half between the upper cover plate and the lower cover plate. The rotating assembly includes a rotating plate, a rotating pin, and a limiting pin. The rotating plate has a rotating hole at the center of its front end. The rotating plate has three limiting holes around the rotating hole in the 0° and ±60° directions. The rotating pin is rotatably connected to the upper cover plate and the lower cover plate through the rotating hole. The limiting pin is limitedly connected to the upper cover plate and the lower cover plate through one of the limiting holes. The connection assembly includes a connecting pin, a wire rope, and a pipe clamp assembly. One end of the wire rope is connected to the rotating plate via the connecting pin, and the pipe clamp assembly is located at the other end of the wire rope.

7. The electric hydraulic excavator according to claim 6, characterized in that, The first side plate has a first slot at its front end, and a first pin is installed in the first slot. The upper cover plate has an elongated hole. The first side plate is fixedly connected to the upper cover plate by the first pin passing through the elongated hole and the first slot in sequence. The first side plate has a second slot at its rear end, and a second pin is installed in the second slot.

8. The electric hydraulic excavator according to claim 7, characterized in that, The second side plate has a third slot at its front end. The front end of the second side plate is fixedly connected to the second side plate by passing through the second slot and the third slot in sequence via the second pin. The second side plate has a fourth slot at its inner side. The third pin is installed in the fourth slot. The upper cover plate has a socket hole. The rear end of the second side plate is fixedly connected to the upper cover plate by passing through the socket hole and the fourth slot in sequence via the third pin.

9. The electric hydraulic excavator according to claim 6, characterized in that, The pipe clamp assembly includes two arc-shaped clamps, a rubber sheath, and a U-bolt. The rubber sheath is respectively disposed on the two arc-shaped clamps, which are symmetrically arranged to form a ring. The two arc-shaped clamps are connected by the U-bolt, which is sleeved with the wire rope.

10. The electric hydraulic excavator according to claim 9, characterized in that, The cable assembly includes a cable holder, a cable, a cable plug, and a cable socket. The cable holder is respectively located at the rear end of the rotating plate and at the rear end between the upper cover plate and the lower cover plate. The cable plug is located at one end of the cable. The cable socket is located in the middle of the connecting fixing plate. The cable passes through the two arc-shaped clamps, the cable holder located at the rear end of the rotating plate, and the cable holder located at the rear end between the upper cover plate and the lower cover plate in sequence, and is connected to the cable socket through the cable plug.

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