Electrical protection device and engineering equipment

Abstract

The utility model relates to the technical field of electrical protection, and discloses an electrical protection device and engineering equipment. A cover body; a cavity is formed in the annular cover body; two opposite ends of the annular cover body are respectively connected with the rocker and the cover body, so that the cavity forms a closed space; a sensor is mounted in the cavity; a first connecting hole is formed in the side part of the annular cover body and is communicated with the cavity; the pipe body is used for the wire harness to penetrate through; one end of the pipe body is connected with the first connecting hole and communicated with the cavity through the first connecting hole. According to the electrical protection device and the engineering equipment, the sensor and the wire harness thereof are comprehensively protected, and the protection reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical protection technical field, concretely relates to an electrical protection device and engineering equipment. BACKGROUND

[0002] The excavator is an important engineering equipment, in order to improve the accuracy and safety of operation, the rocker of the excavator is installed with various sensors to identify the working posture of the excavator, and the rotation angle of the working device and the extension length of the oil cylinder are assisted to control by setting parameters, to realize the accurate control of the action of the excavator. However, the working environment of the excavator is usually harsh and complex, and the electrical elements such as sensors are easy to be damaged, which seriously affects the operation accuracy and efficiency, and even threatens personal safety due to misjudgment of the working posture.

[0003] Therefore, in the related art, a protective cover is usually arranged on the rocker to protect the electrical elements such as sensors. However, the current protective cover structure is relatively simple, and the reliability of protection is low. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides an electrical protection device and engineering equipment to solve the problem of low reliability of the protective cover on the engineering equipment.

[0005] In a first aspect, the utility model provides an electrical protection device, which comprises: a rocker; a cover body; an annular cover body, which forms a cavity inside; the opposite ends of the annular cover body are connected with the rocker and the cover body respectively, so as to form a closed space in the cavity; the cavity is used for installing sensors; the side part of the annular cover body is provided with a first connecting hole, which is communicated with the cavity; a pipe body is used for the wire harness to pass through; one end of the pipe body is connected with the first connecting hole and communicated with the cavity through the first connecting hole.

[0006] In an optional embodiment, the annular cover body comprises a first side part and a second side part connected with each other, the first side part and the second side part jointly enclose an annular shape and jointly form a first end face; the first connecting hole is arranged on the second side part; the cover body comprises a cover part and a protruding part connected with each other, the cover part is connected with the first end face; wherein the first side part has a first outer side face extending around the first end face, the cover part has a second outer side face extending around the first end face, and the first outer side face is flush with the second outer side face; and / or the second side part has a third outer side face extending around the first end face, and the protruding part protrudes from the third outer side face along the extension direction of the first connecting hole.

[0007] In an optional embodiment, the second side part comprises a first flat section and two second flat sections, the two second flat sections are connected to the two ends of the first flat section respectively and connected with the two ends of the first side part respectively; the first connecting hole is arranged on the first flat section; wherein the connection between the first flat section and the second flat section is an obtuse angle.

[0008] In an alternative embodiment, the first side portion comprises a first arc segment and a second arc segment connected together, the concave surface of the first arc segment and the concave surface of the second arc segment are oppositely arranged, and the distal ends of the first arc segment and the second arc segment are connected to the two ends of the second side portion, respectively.

[0009] In an alternative embodiment, the annular cover is integrally formed.

[0010] In an alternative embodiment, the electrical protection device further comprises an elastic protection member, which is sleeved on the outer side of the tube body.

[0011] In an alternative embodiment, the electrical protection device further comprises a sealing joint, which is connected to the end of the tube body away from the annular cover.

[0012] In an alternative embodiment, the electrical protection device further comprises a mounting plate located in the cavity, the mounting plate comprises a plate body portion and a stud portion, the plate body portion is connected to the rocker, and the stud portion is welded to the plate body portion and located on the side of the plate body portion away from the rocker.

[0013] In an alternative embodiment, the electrical protection device further comprises a fixing member located in the cavity, the fixing member is connected to the rocker and located between the first connecting hole and the mounting plate, and the fixing member is used for fixing the wire harness.

[0014] In a second aspect, the utility model also provides an engineering equipment, which comprises the electrical protection device as described above.

[0015] According to the technical scheme of the utility model, the rocker, the cover and the annular cover jointly form a closed cavity, the sensor is installed in the cavity, and the rocker, the cover and the annular cover jointly protect the sensor; one end of the tube body is connected to the first connecting hole and communicates with the cavity, so that the wire harness can extend into the cavity and be connected to the sensor, and the tube body protects the wire harness and prevents the wire harness from being abraded or broken. The electrical protection device and the engineering equipment comprehensively protect the sensor and the wire harness, and have high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the specific embodiments of the utility model or the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] Figure 1A structure schematic view of an electrical protection device according to an embodiment of the present utility model;

[0018] Figure 2 A state schematic view of an electrical protection device according to an embodiment of the present utility model before and after swinging with a rocker;

[0019] Figure 3 A partial exploded view of an electrical protection device according to an embodiment of the present utility model;

[0020] Figure 4 A Figure 3 A partial enlarged view of A in the figure;

[0021] Figure 5 A structure schematic view of a rocker and a ring-shaped cover according to an embodiment of the present utility model;

[0022] Figure 6 A structure schematic view of a mounting plate according to an embodiment of the present utility model;

[0023] Figure 7 A structure schematic view of a cover according to an embodiment of the present utility model;

[0024] Figure 8 A structure schematic view of a pipe body, an elastic protection piece and a support according to an embodiment of the present utility model.

[0025] Explanation of reference signs:

[0026] 1, rocker; 11, surface; 12, side surface; 13, widened part; 131, first side surface; 132, second side surface; 14, hinged hole;

[0027] 2, ring-shaped cover; 20, cavity; 21, first side part; 211, first arc-shaped section; 212, second arc-shaped section; 22, second side part; 221, first straight section; 222, second straight section; 23, first end surface; 24, first outer side surface; 25, third outer side surface; 26, first connecting hole; 27, threaded hole; 28, first inner side surface;

[0028] 3, cover; 31, cover part; 32, protruding part; 33, second outer side surface; 34, through hole; 35, bolt piece;

[0029] 4, pipe body; 41, pipe body part; 42, joint part;

[0030] 5, elastic protection piece;

[0031] 6, sealing joint;

[0032] 7, support; 71, first support; 72, second support; 73, second connecting hole; 74, third connecting hole; 75, fastener;

[0033] 8, mounting plate; 81, plate body portion; 82, stud portion; 83, first welding hole; 84, second welding hole;

[0034] 9, fixing member; 91, seat body portion; 92, binding portion;

[0035] 101, sensor; 102, wire harness. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] The embodiments of the present application will be described below in conjunction with Figures 1 to 8 .

[0038] According to the embodiments of the present application, on the one hand, an electrical protection device is provided, as shown in Figures 1-5 , comprising a rocker 1, a cover body 3, an annular cover body 2 and a pipe body 4. The annular cover body 2 forms a cavity 20 inside, and the opposite ends of the annular cover body 2 are connected with the rocker 1 and the cover body 3 respectively, so as to form a closed space for the cavity 20. The cavity 20 is used for installing a sensor 101. In addition, the side of the annular cover body 2 is provided with a first connecting hole 26, and the first connecting hole 26 is communicated with the cavity 20. The pipe body 4 is used for penetrating a wire harness 102, one end of the pipe body 4 is connected with the first connecting hole 26, and the pipe body 4 is communicated with the cavity 20 through the first connecting hole 26, so that the wire harness 102 can extend into the cavity 20 through the pipe body 4 and be connected with the sensor 101.

[0039] It can be understood that the type of the sensor 101 is not specifically limited in the present application, and the type of the sensor 101 depends on the functional requirements of the applied engineering equipment. Exemplarily, the engineering equipment can be an excavator, and the sensor 101 can be an angle sensor 101 or other electrical detection sensor 101.

[0040] In the embodiment, the rocker 1, the cover 3 and the annular cover 2 jointly form a closed cavity 20, the sensor 101 is installed in the cavity 20, and the rocker 1, the cover 3 and the annular cover 2 jointly protect the sensor 101; one end of the pipe body 4 is connected with the first connecting hole 26 and communicates with the cavity 20, so that the wire harness 102 can extend into the cavity 20 and be connected with the sensor 101, and the pipe body 4 protects the wire harness 102 and avoids abrasion and breakage of the wire harness 102. The electrical protection device and the engineering equipment comprehensively protect the sensor 101 and the wire harness 102, and the protection reliability is high.

[0041] Specifically, the annular cover 2 comprises a first end face 23 and a second end face (not shown in the figure) arranged oppositely, the cover 3 is connected with the first end face 23, and the rocker 1 is connected with the second end face. It can be understood that the annular cover 2 is in a closed annular shape, and the above-mentioned cavity 20 is formed in the annular cover 2 and penetrates in a direction, and the first end face 23 and the second end face are end faces of the annular cover 2 at opposite ends in the penetration direction of the cavity 20.

[0042] Exemplarily, the cover 3 and the first end face 23 can be welded, bolted, clamped or the like. Preferably, the cover 3 and the first end face 23 are bolted, so as to facilitate disassembly and assembly of the sensor 101. Exemplarily, the rocker 1 and the second end face can be welded, bolted, clamped or the like. Preferably, the rocker 1 and the second end face are welded, so as to be reliable in connection and good in sealing.

[0043] In some embodiments, the cover 3 and the first end face 23 are connected through bolt members 35, and the rocker 1 and the second end face are welded.

[0044] Exemplarily, the cover 3 and the first end face 23 are connected through a plurality of bolt members 35, the first end face 23 of the annular cover 2 is provided with a plurality of threaded holes 27, the cover 3 is correspondingly provided with a plurality of through holes 34, the bolt members 35 pass through the through holes 34 and are screwed with the corresponding threaded holes 27.

[0045] It can be understood that, in general, the number of the bolt members 35, the threaded holes 27 and the through holes 34 is the same and one-to-one correspondence. Of course, in some special cases, the number of the bolt members 35, the threaded holes 27 and the through holes 34 can be different. The number of the bolt members 35, the threaded holes 27 and the through holes 34 is not limited in the utility model, as long as the connection function between the cover 3 and the annular cover 2 is realized. Exemplarily, the number of the bolt members 35, the threaded holes 27 and the through holes 34 is the same and one-to-one correspondence. The number of the bolt members 35, the threaded holes 27 and the through holes 34 can be 4, 6, 7, 8, 9, 10 or other numbers.

[0046] In some embodiments, a sealing glue layer is further provided between the cover 3 and the first end surface 23, so that the cover 3 is tightly attached to the first end surface 23. In this way, the cover 3 is not easily deformed, and the sealing property of the cavity 20 is improved, thereby improving the reliability of the protection of the sensor 101. In actual production, the sealing glue layer can be formed by applying sealing glue between the first end surface 23 and the cover 3 connected thereto.

[0047] Further, the rocker 1 includes two surfaces 11 arranged oppositely and a side surface 12 connected between the two surfaces 11. The second end surface of the annular cover 2 is connected to one of the surfaces 11, and in a direction perpendicular to the surface 11, the projection of the annular cover and the cover 3 falls within the surface 11, so as to reduce the probability of the annular cover 2 and the cover 3 being hit when the engineering equipment is working, improve the anti-deformation ability of the annular cover 2 and the cover 3, and further improve the reliability of the protection of the electrical protection device.

[0048] Further, in some embodiments, the middle part of the rocker 1 is provided with a widened part 13, and the annular cover is connected to the above-mentioned surface 11 of the widened part 13. Exemplarily, the widened part 13 includes a first side surface 131 and a second side surface 132, both of which are connected between the two surfaces 11 and are located at opposite sides of the surface 11. Among them, the first side surface 131 and the second side surface 132 are both arc-shaped, which maximizes the saving of materials and space on the basis of meeting the space requirements of arranging the annular cover 2. It can be understood that the first side surface 131 and the second side surface 132 are part of the side surface 12 of the rocker 1.

[0049] In some embodiments, both ends of the rocker 1 are provided with a hinge hole 14, which penetrates the above-mentioned two surfaces 11, and the hinge hole 14 is a sunken hole, after being assembled with the pin shaft, the pin shaft can be completely embedded in the sunken hole, so that the end faces at both ends of the pin shaft are flush with the two surfaces 11 respectively, avoiding the interference between the pipe body 4 and the pin shaft during the rotation of the rocker 1.

[0050] Specifically, as shown in Figure 4 and Figure 7 , the annular cover 2 includes a first side part 21 and a second side part 22 connected together, the first side part 21 and the second side part 22 jointly enclose an annular shape and jointly form the above-mentioned first end surface 23. Among them, the second side part 22 is provided with the above-mentioned first connecting hole 26. The cover 3 includes a cover part 31 and a protruding part 32 connected together, the cover part 31 is connected with the first end surface 23, such as through the above-mentioned bolt 35, bolt hole, and through hole 34.

[0051] In some embodiments, the first side 21 has a first outer side 24 extending around the first end surface 23. The cover 31 has a second outer side 33 extending around the first end surface 23, and the first outer side 24 is flush with the second outer side 33, so as to reduce the probability of the cover 3 being hit, further improve the anti-deformation capability of the cover 3, and make the external contour of the electrical protection device more smooth and improve the aesthetic appearance.

[0052] Of course, in some embodiments, the first outer side 24 can also protrude from the second outer side 33, so as to also reduce the probability of the cover 3 being hit. Alternatively, the second outer side 33 can also protrude from the first outer side 24.

[0053] In some embodiments, the second side 22 has a third outer side 25 extending around the first end surface 23, and the protruding portion 32 protrudes from the third outer side 25 along the extension direction of the first connecting hole 26, so as to reduce the probability of the pipe body 4 being hit at the connecting position of the pipe body 4 and the first connecting hole 26, ensure the connecting reliability of the pipe body 4 and the first connecting hole 26, and avoid the pipe body 4 being damaged due to the hit and affecting the sealing performance of the cavity 20.

[0054] Understandably, the first outer side 24 and the third outer side 25 jointly enclose a ring shape to form the outer side wall of the ring-shaped cover 2.

[0055] Understandably, the cover 31 and the protruding portion 32 extend in the same plane and are parallel to the first end surface 23.

[0056] Exemplarily, the cover 31 and the protruding portion 32 are integrally formed. Exemplarily, the cover 3 can be integrally formed by blanking a steel plate to form the cover 31 and the protruding portion 32.

[0057] In some embodiments, as shown in Figure 5 The second side 22 includes a first flat section 221 and two second flat sections 222, the two second flat sections 222 are respectively connected to the two ends of the first flat section 221 and are respectively connected to the two ends of the first side 21, and the first connecting hole 26 is arranged on the first flat section 221.

[0058] In the cavity 20, the connection position of the first flat section 221 and the second flat section 222 is an obtuse angle, so as to facilitate the arrangement of the wire harness 102 and the wire pipe body 4, and prevent the wire pipe body 4 and the wire harness 102 from being bent to a small radius during the rotation of the rocker 1, so as to affect the service life of the wire harness 102.

[0059] The present application does not limit the specific angle of the obtuse angle of the connection position of the first flat section 221 and the second flat section 222, and exemplarily, the obtuse angle can be 100°, 105°, 110°, etc.

[0060] It can be understood that the cover part 31 is covered on the first end surface 23, and the protruding part 32 is protruded on the third outer side surface 25. That is, part of the structure of the cover part 31 is covered on the two second flat sections 222. In some embodiments, at the second flat section 222, part of the structure of the second outer side surface 33 is flush with part of the structure of the third outer side surface 25, so as to further reduce the probability of the cover 3 being hit.

[0061] Further, in some embodiments, as shown in Figure 5 the first side part 21 includes a first arc-shaped section 211 and a second arc-shaped section 212 connected with each other, and the concave surface of the first arc-shaped section 211 and the concave surface of the second arc-shaped section 212 are oppositely arranged. The ends of the first arc-shaped section 211 and the second arc-shaped section 212 away from each other are connected with the two ends of the second side part 22, specifically, the end of the first arc-shaped section 211 away from the second arc-shaped section 212 is connected with one of the second flat sections 222, and the end of the second arc-shaped section 212 away from the first arc-shaped section 211 is connected with the other second flat section 222. The first side part 21 is arranged as the first arc-shaped section 211 and the second arc-shaped section 212, which not only ensures the wall thickness of the annular cover body 2, but also reduces the size of the annular cover body 2, so that the structure is more compact, the space occupation is smaller, and the arc-shaped structure can reduce stress concentration and improve the strength and stability of the annular cover body 2.

[0062] It can be understood that the first arc-shaped section 211 and the second arc-shaped section 212 jointly form the first outer side surface 24, and the first arc-shaped section 211 and the second arc-shaped section 212 also jointly form the first inner side surface 28 oppositely arranged with the first outer side surface 24. The first outer side surface 24 is located outside the cavity 20, and the second inner side surface 12 is located inside the cavity 20 and forms the inner wall of the cavity 20. Among them, the first outer side surface 24 and the first inner side surface 28 both have an arc-shaped structure. Moreover, the outer contour of the first inner side surface 28 is adapted to the outer contour of the sensor 101, or the first inner side surface 28 is fitted with the outer side of the sensor 101, so as to save space to the maximum extent.

[0063] In some embodiments, the annular cover body 2 is integrally formed, that is, the first side part 21 and the second side part 22 are integrally formed, such as being integrally processed by blanking a whole plate. Compared with a frame structure formed by steel plate tailor welding, the annular cover body 2 is integrally formed, the shape and the cavity 20 shape are easy to control, and because there is no weld, the stress concentration is smaller, the strength is higher, and the stability is better.

[0064] In some embodiments, as shown in Figure 8 the electrical protection device further includes an elastic protection piece 5, which is sleeved on the outer side of the pipe body 4 to improve the wear resistance of the pipe body 4, so as to further improve the protection capability of the pipe body 4. Exemplarily, the elastic protection piece 5 can be a spring piece, which is sleeved on the outer side of the pipe body 4.

[0065] Specifically, the tube body 4 comprises a tube body part 41 and a joint part 42, the joint part 42 is connected to at least one end of the tube body part 41. The joint part 42 is connected with the first connecting hole 26, and the elastic protection piece 5 is sleeved on the outer side of the tube body part 41. By connecting the joint part 42 with the first connecting hole 26, the sealing is good, which can effectively prevent dust, soil and other foreign matters from entering the cavity 20, and further improve the reliability of the electrical protection.

[0066] Exemplarily, the first connecting hole 26 is provided with a thread, and the joint part 42 of one end of the tube body 4 extends into the first connecting hole 26 and is threadedly connected with the first connecting hole 26. The connection mode is simple and reliable, and the sealing is good.

[0067] Exemplarily, one end of the tube body 4 is provided with a connecting flange, and the tube body 4 is connected to the first connecting hole 26 through the connecting flange.

[0068] In some embodiments, the electrical protection device further comprises a sealing joint 6 connected to the end of the tube body 4 away from the annular cover 2, so as to further improve the sealing of the tube body 4 and effectively prevent dust and sand from entering the tube body 4 to damage the wire harness 102.

[0069] Exemplarily, two joint parts 42 are provided, and the two joint parts 42 are respectively connected to the two ends of the tube body part 41. One of the joint parts 42 is connected with the first connecting hole 26, and the other joint part 42 is connected with the sealing joint 6. Exemplarily, the sealing joint 6 can adopt a gland.

[0070] Alternatively, in some embodiments, the sealing joint 6 can be directly connected to the end of the tube body part 41 away from the first connecting hole 26. Alternatively, in some other embodiments, the two ends of the tube body part 41 are both provided with the sealing joint 6.

[0071] In some embodiments, the electrical protection device further comprises a bracket 7 and a fastener 75. Exemplarily, the bracket 7 is bent to form a first bracket 71 and a second bracket 72 intersecting and connected; such as formed by bending a steel plate. The first bracket 71 is provided with a second connecting hole 73, and the second bracket 72 is provided with a third connecting hole 74. The joint part 42 of the end of the tube body 4 away from the first connecting hole 26 can be arranged in the second connecting hole 73 and fixed to the first bracket 71 through the fastener 75. The third connecting hole 74 on the second bracket 72 is used to connect with the engineering equipment to fix the bracket 7 at a predetermined position.

[0072] Further, in some embodiments, the electrical protection device further comprises a mounting plate 8 located in the cavity 20, and the mounting plate 8 is used to mount the sensor 101. Specifically, as shown in FIG. 4, the mounting plate 8 is arranged in the cavity 20, and the sensor 101 is mounted on the mounting plate 8. Figure 6As shown, the mounting plate 8 comprises a plate body part 81 connected with the rocker 1 and a stud part 82 connected with the plate body part 81 and located on the side of the plate body part 81 away from the rocker 1.

[0073] The plate body part 81 can be adapted to the outer contour of the sensor 101 to save space and improve aesthetics.

[0074] In some embodiments, the plate body part 81 can be welded to the surface 11 of the rocker 1 to save space. For example, the middle part of the plate body part 81 is provided with a first welding hole 83, and the plate body part 81 is fixedly connected to the surface 11 of the rocker 1 by means of circumferential welding along the hole circumference of the first welding hole 83. The first welding hole 83 can be a circular hole.

[0075] In some embodiments, the stud part 82 is welded to the plate body part 81. For example, the edge of the plate body part 81 is further provided with a second welding hole 84, one end of the stud part 82 is arranged in the second welding hole 84, and the stud part 82 is welded to the plate body part 81 through the second welding hole 84. In actual processing, in order to facilitate welding, the end of the stud part 82 welded to the second welding hole 84 can protrude from the plate body part 81, and after welding is completed, the protruding part of the stud part 82 can be polished to be flush with the plate body part 81. Figure 6 A structure schematic diagram of the stud part 82 before the protruding part is polished is shown.

[0076] Compared with the threaded connection between the stud part 82 and the plate body part 81, the welding strength of the plate body part 81 and the stud part 82 is higher, and the plate thickness of the plate body part 81 is reduced while the strength is ensured, thereby facilitating the reduction of the size of the annular cover body 2 in the axial direction of the hinge hole 14, the reduction of space occupation, and the improvement of compactness. In some embodiments, the annular cover body 2 is formed by processing a whole plate, the size of the annular cover body 2 in the axial direction of the hinge hole 14 is reduced, the plate thickness of the processed plate of the annular cover body 2 is correspondingly reduced, and the production cost is saved.

[0077] For example, the stud part 82 can be provided with a plurality of stud parts 82 arranged at intervals in the circumferential direction of the plate body part 81, and the plate body part 81 is provided with a plurality of second welding holes 84 arranged at intervals in the circumferential direction of the plate body part 81.

[0078] The present application does not make specific limitations on the setting positions of the first welding hole 83 and the second welding hole 84. For example, the first welding hole 83 can also be arranged at the edge of the plate body part 81, and the second welding hole 84 can also be arranged at the middle part of the plate body part 81.

[0079] Alternatively, in some other embodiments, the plate body part 81 can be bolted, adhered, etc. with the rocker 1, and the stud part 82 can be bolted, adhered, etc. with the plate body part 81.

[0080] In some embodiments, as shown in Figure 4 The electrical protection device further comprises a fixing member 9 located in the cavity 20, the fixing member 9 is connected with the rocker 1 and located between the first connecting hole 26 and the mounting plate 8, and the fixing member 9 is used for fixing the wire harness 102 to prevent the wire harness 102 from being scratched by the inner wall edge of the annular cover body 2 during movement.

[0081] Exemplarily, the fixing member 9 can comprise a seat body part 91 and a binding part 92, the seat body part 91 is fixedly connected to the surface 11 of the rocker 1, and the binding part 92 is connected with the seat body part 91 and used for binding the wire harness 102. Exemplarily, the seat body part 91 can be a wire seat, and the binding part 92 can be a pipe clamp, a strap, etc.

[0082] According to the embodiments of the utility model, on the other hand, an engineering equipment is further provided, which comprises the electrical protection device described in the above embodiments. Since the engineering equipment of the utility model comprises the above electrical protection device, the same technical effects as the above electrical protection device are achieved, and thus no further description is given here.

[0083] The utility model does not make specific limitation on the type of the engineering equipment, as long as the electrical protection device of the utility model is applied, i.e. within the protection scope of the utility model. Exemplarily, the engineering equipment can be an excavator, a loader, a digger, a grabber or other engineering equipment.

[0084] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An electrical protection device, characterized in that, The electrical protection device comprises: a rocker (1); a cover (3); a ring-shaped cover body (2) in which a cavity (20) is formed; opposite ends of the ring-shaped cover body (2) are connected with the rocker (1) and the cover (3) respectively, so that the cavity (20) forms a closed space; the cavity (20) is used for mounting a sensor (101); a first connecting hole (26) is arranged on a side of the ring-shaped cover body (2) and communicates with the cavity (20); a pipe body (4) for a wire harness (102) to pass through; one end of the pipe body (4) is connected with the first connecting hole (26) and communicates with the cavity (20) through the first connecting hole (26).

2. The electrical protection device of claim 1, wherein, The ring-shaped cover body (2) comprises a first side (21) and a second side (22) connected with each other; the first side (21) and the second side (22) jointly enclose a ring shape and jointly form a first end face (23); the first connecting hole (26) is arranged on the second side (22); The cover (3) comprises a cover part (31) and a protruding part (32) connected with each other; the cover part (31) is connected with the first end face (23); The first side (21) has a first outer side (24) extending around the first end face (23); the cover part (31) has a second outer side (33) extending around the first end face (23); the first outer side (24) is flush with the second outer side (33); and / or The second side (22) has a third outer side (25) extending around the first end face (23); along an extension direction of the first connecting hole (26), the protruding part (32) protrudes from the third outer side (25).

3. An electrical protection device according to claim 2, characterised in that, The second side (22) comprises a first flat section (221) and two second flat sections (222) connected with two ends of the first flat section (221) respectively and connected with two ends of the first side (21) respectively; the first connecting hole (26) is arranged on the first flat section (221); An obtuse angle is formed at a connection between the first flat section (221) and the second flat section (222).

4. The electrical protection device of claim 2, wherein, The first side (21) comprises a first arc-shaped section (211) and a second arc-shaped section (212) connected with each other; concave surfaces of the first arc-shaped section (211) and the second arc-shaped section (212) are oppositely arranged; distal ends of the first arc-shaped section (211) and the second arc-shaped section (212) away from each other are connected with two ends of the second side (22) respectively.

5. An electrical protection device according to claim 4, characterised in that, The ring-shaped cover body (2) is integrally formed.

6. An electrical protection device according to any one of claims 1-5, characterized in that, The electrical protection device further comprises an elastic protection member (5) sleeved on an outer side of the pipe body (4).

7. An electrical protection device according to claim 6, characterised in that, The electrical protection device further comprises a sealing joint (6) connected to an end of the pipe body (4) away from the ring-shaped cover body (2).

8. An electrical protection device according to any one of claims 1-5, characterized in that, The electrical protection device further comprises a mounting plate (8) located in the cavity (20); the mounting plate (8) comprises a plate body (81) connected with the rocker (1) and a stud (82) welded with the plate body (81) and located on a side of the plate body (81) away from the rocker (1).

9. An electrical protection device according to claim 8, characterised in that, The electrical protection device further comprises a fixing member (9) located in the cavity (20); the fixing member (9) is connected with the rocker (1) and located between the first connecting hole (26) and the mounting plate (8); and the fixing member (9) is used for fixing the wire harness (102).

10. An engineering apparatus characterised by The electrical protection device according to any one of claims 1 to 9. The electrical protection device according to any one of claims 1 to 9.

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