Electric shovel tail rod protection device and electric shovel
By dividing the tail boom into a first section and a second section, and setting a limiting part on the electric shovel, the tail boom can be rotated, tilted, and reset, solving the deformation problem caused by the tail boom colliding with the undulating terrain, and ensuring the protection of the tail cable and the normal operation of the electric shovel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENHUA BAORIXILE ENERGY CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
When encountering uneven terrain, the tail boom of an electric shovel is prone to collisions and deformation, which affects the protection of the tail cable.
The tail rod is designed to include a first section and a second section. The first section is connected to the electric shovel, and the second section can rotate and tilt upwards when in contact with the material, and return to a horizontal state when separated. It is limited by a limiting part to avoid rigid collision.
It effectively prevents tail boom deformation, ensures the protection of the tail cable, extends cable life, and ensures the normal operation of the electric shovel.
Smart Images
Figure CN224148807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric shovel equipment technology, and more specifically, to an electric shovel tail rod protection device and an electric shovel. Background Technology
[0002] Electric shovels are one of the main mining equipment in modern open-pit mining operations. The operation of electric shovels relies on cables to transmit electricity to drive motors to generate power output. Therefore, the normal operation of the cables is the guarantee for the normal operation of electric shovels.
[0003] Because electric shovels move or rotate continuously during operation, they are prone to damaging the tail cable. To prevent this, a tail boom is usually installed at the rear of the shovel. The tail boom supports the tail cable, thus preventing damage. Furthermore, to ensure convenient retraction of the shovel, the tail boom should be extended as much as possible.
[0004] However, the working surface of an electric shovel is usually uneven. When the long tail bar encounters an uneven surface, its end is prone to collision with the uneven surface, which can cause the tail bar to deform and thus affect its protection of the tail cable. Utility Model Content
[0005] In view of this, the present invention provides a tail rod protection device for an electric shovel and an electric shovel, the main purpose of which is to prevent deformation of the tail rod when it collides with undulations, thereby ensuring the protective function of the tail rod for the tail cable.
[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions:
[0007] On one hand, this utility model embodiment provides a tail rod protection device for an electric shovel, wherein the electric shovel is equipped with a tail cable, including:
[0008] The tail rod includes a first section and a second section, one end of the first section is rotatably connected to one end of the second section, the other end of the first section is used to connect to the electric shovel, the second section is used to rotate relative to the first section and tilt upward when in contact with material, and to return to a horizontal extension relative to the first section when separated from the material; at least the second section is used to mount the tail cable.
[0009] Furthermore, the electric shovel tail boom protection device also includes:
[0010] A limiting part is disposed on the first segment and / or the second segment, the limiting part being used to limit the second segment to extend horizontally relative to the first segment when the second segment is separated from the material.
[0011] Furthermore, the limiting part includes a rope, one end of which is connected to the end of the second segment away from the first segment, and the other end of which is connected to the electric shovel. The rope is used to bend when the second segment is tilted upward relative to the first segment, and to straighten when the second segment returns to its horizontal extension relative to the first segment.
[0012] And / or,
[0013] The limiting part includes a limiting plate, the limiting plate includes a limiting end, the limiting plate is connected to the first segment, and the limiting end extends to the bottom of the second segment;
[0014] The limiting end is used to separate from the second segment when the second segment is tilted upward relative to the first segment, and to abut against the second segment when the second segment is reset to extend horizontally relative to the first segment.
[0015] Furthermore, a pivot is provided at one end of the first segment;
[0016] One end of the second section is provided with a shaft hole, and the rotating shaft is rotatably connected to the shaft hole.
[0017] Furthermore, the second segment includes a second segment body and a bent segment connected to the second segment body and bent relative to the second segment body. The bent segment is rotatably connected to the first segment, and when the second segment is reset to extend horizontally relative to the first segment, the height of the second segment body relative to the horizontal plane is greater than the height of the first segment relative to the horizontal plane.
[0018] The second section of the body is provided with a mounting groove, which extends along the length of the second section of the body and passes through both ends of the second section of the body. The mounting groove is used to install the tail cable.
[0019] Furthermore, the electric shovel tail boom protection device also includes:
[0020] A protective sleeve is fitted over the outside of the tail cable, and at least a portion of the protective sleeve is located within the mounting groove.
[0021] Furthermore, the mounting groove includes a first end away from the first segment and a second end close to the first segment;
[0022] The length of the protective sleeve is greater than the length of the mounting groove. One end of the protective sleeve extends out of the first end of the mounting groove, and the other end of the protective sleeve extends out of the second end of the mounting groove and extends to the root of the tail cable.
[0023] Furthermore, the first segment includes two first support rods, one end of the two first support rods is connected to each other, the other end of the two first support rods is connected to the electric shovel, and the other ends of the two first support rods are spaced apart by a preset distance. The plane in which the two first support rods are located is parallel or perpendicular to the horizontal plane.
[0024] One end of the second segment is rotatably connected to the connection point of the two first support rods.
[0025] Furthermore, the first segment also includes a second support rod and at least one third support rod, one end of the second support rod being connected to the connection point of the two first support rods, and the other end of the second support rod being connected to the electric shovel; at least one of the third support rods is connected between the two first support rods.
[0026] On the other hand, this utility model embodiment provides an electric shovel, including the aforementioned electric shovel tail rod protection device.
[0027] By employing the above technical solution, this utility model has at least the following beneficial effects:
[0028] The electric shovel tail rod protection device and electric shovel provided in this embodiment of the invention, by configuring the tail rod to include a first section and a second section, with the first and second sections rotatably connected, and the first section connected to the electric shovel, achieve the following: when the tail rod contacts the material, the second section can rotate relative to the first section and tilt upwards under the action of the material, without rigidly colliding with the material; when the tail rod separates from the material, the second section can return to a horizontal state to support the tail cable. Compared with the prior art, the technical solution provided in this embodiment of the invention, by configuring the tail rod in two parts, allows the second section of the tail rod to rotate relative to the first section, and the second section of the tail rod to tilt upwards relative to the first section when in contact with the material, thereby avoiding rigid collision between the tail rod and the material, thus preventing deformation of the tail rod and ensuring the protective function of the tail rod for the tail cable. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of the second section of the electric shovel tail rod protection device when it is separated from the material, provided in an embodiment of the present invention.
[0030] Figure 2 This is a schematic diagram of the structure of the second section of an electric shovel tail rod protection device in contact with the material, provided in an embodiment of this utility model. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the present utility model will be described in more detail below with reference to the accompanying drawings of the preferred embodiments. Some embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0032] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a tail rod protection device for an electric shovel. The electric shovel 100 is provided with a tail cable 101. The electric shovel tail rod protection device includes: a tail rod 1, which includes a first section 11 and a second section 12. One end of the first section 11 is rotatably connected to one end of the second section 12. The other end of the first section 11 is used to connect to the electric shovel 100. The second section 12 is used to rotate relative to the first section 11 and tilt upward when in contact with the material 200, and to return to a horizontal extension relative to the first section 11 when separated from the material 200. At least the second section 12 is used to house the tail cable 101.
[0033] It is understandable that the first segment 11 is connected to the electric shovel 100, and the second segment 12 is rotatably connected to the end of the first segment 11 furthest from the electric shovel 100. The first segment 11 can be the root of the tail rod 1, and the second segment 12 can be the head of the tail rod 1. When the overall length of the tail rod 1 is relatively long, the head of the tail rod 1, i.e., the second segment 12, is prone to sinking and colliding with the material 200. In addition, after the second segment 12 separates from the material 200, it can be reset to a state of horizontal extension relative to the first segment 11. This horizontal extension state can be understood as the second segment 12 being parallel or nearly parallel to the horizontal plane, as long as it can support the tail cable 101 and protect the tail cable 101.
[0034] The electric shovel tail rod protection device provided in this embodiment of the invention, by configuring the tail rod 1 as comprising a first segment 11 and a second segment 12, with the first segment 11 and the second segment 12 rotatably connected, and the first segment 11 connected to the electric shovel 100, enables the second segment 12 to rotate relative to the first segment 11 and tilt upwards under the action of the material 200 when the tail rod 1 contacts the material 200, without rigidly colliding with the material 200; when the tail rod 1 separates from the material 200, the second segment 12 can return to a horizontal state to support the tail cable 101. Compared with the prior art, the technical solution provided in this embodiment of the invention, by configuring the tail rod 1 in two parts, allows the second segment 12 of the tail rod 1 to rotate relative to the first segment 11, and the second segment 12 of the tail rod 1 to tilt upwards relative to the first segment 11 when in contact with the material 200, thereby avoiding rigid collision between the tail rod 1 and the material 200, thus preventing deformation of the tail rod 1 and ensuring the protective function of the tail rod 1 for the tail cable 101.
[0035] It should be noted that the rotation angle range of the second segment 12 relative to the first segment 11 during the process of contacting or separating from the material 200 can be limited by the rotational connection mechanism between the two. For example, the first segment 11 and the second segment 12 are rotatedly connected by angular contact ball bearings, or an additional limiting mechanism is set to limit the rotation.
[0036] To improve the reliability of the electric shovel tail rod protection device, in some embodiments, the electric shovel tail rod protection device may also include a limiting part 2, which is disposed at the first end and / or the second segment 12. The limiting part 2 is used to limit the second segment 12 to extend horizontally relative to the first segment 11 when the second segment 12 is separated from the material 200.
[0037] It is understandable that the limiting part 2 only limits the second segment 12 after it separates from the material 200. When the second segment 12 comes into contact with the material 200, the limiting part 2 will not affect the rotation of the second segment 12 relative to the first segment 11.
[0038] In some embodiments, see Figure 1 and Figure 2 The limiting part 2 may include a rope, one end of which is connected to the end of the second segment 12 away from the first segment 11, and the other end of which is connected to the electric shovel 100. The rope is used to bend when the second segment 12 is tilted upward relative to the first segment 11, and to straighten when the second segment 12 is returned to its horizontal extension relative to the first segment 11.
[0039] By setting the rope, when the second segment 12 comes into contact with the material 200, the second segment 12 can rotate relative to the first segment 11 and tilt upwards. The tilted second segment 12 can make the rope bend. When the second segment 12 separates from the material 200, the second segment 12 can rotate downwards relative to the first segment 11 under the action of gravity to reset until the rope is taut, thereby limiting the second segment 12 to a horizontally extended state.
[0040] Furthermore, in order to improve the limiting reliability of the limiting part 2, the number of ropes can be set to two or more.
[0041] Alternatively, the limiting part 2 may include a limiting plate, the limiting plate including a limiting end, the limiting plate being connected to the first segment 11, and the limiting end extending below the second segment 12; the limiting end is used to separate from the second segment 12 when the second segment 12 is tilted upward relative to the first segment 11, and to abut against the second segment 12 when the second segment 12 is reset to extend horizontally relative to the first segment 11.
[0042] By setting a limiting plate, when the second segment 12 comes into contact with the material 200, the second segment 12 can rotate relative to the first segment 11 and tilt upwards, and the second segment 12 leaves the limiting end of the limiting plate. When the second segment 12 separates from the material 200, the second segment 12 can rotate downwards relative to the first segment 11 under the action of gravity to reset, until the second segment 12 abuts against the limiting end of the limiting plate, that is, the second segment 12 is supported on the limiting end, thereby limiting the second segment 12 to a horizontally extended state.
[0043] Alternatively, the limiting part 2 may include both the rope and the limiting plate described above, so that if one of them fails due to damage or other abnormalities, the other can still limit the second segment 12, thereby improving the reliability of the limiting part 2 in limiting the second segment 12. In specific implementation, the above embodiments can be selected according to actual usage requirements.
[0044] There are several ways to rotate the connection between the first segment 11 and the second segment 12, as long as it can tilt upward relative to the first segment 11 when the second segment 12 comes into contact with the material 200 and return to its original position when it separates from the material 200. For example, the first segment 11 and the second segment 12 can be rotatedly connected by a bearing.
[0045] In some embodiments, see Figure 1 and Figure 2 The first segment 11 has a rotating shaft 111 at one end; the second segment 12 has a shaft hole at one end, and the rotating shaft 111 is rotatably connected to the shaft hole. That is to say, the first segment 11 and the second segment 12 can be rotatably connected by the rotating shaft 111.
[0046] Specifically, one end of the first segment 11 can be connected to two oppositely arranged ear plates 112, and a rotating shaft 111 is connected between the two ear plates 112; one end of the second segment 12 is located between the two ear plates 112, and the rotating shaft 111 is rotatably connected to the shaft hole.
[0047] In some embodiments, see Figure 1 and Figure 2 The second segment 12 may include a second segment body 121 and a bent segment 122 connected to the second segment body 121 and bent relative to the second segment body 121. The bent segment 122 is rotatably connected to the first segment 11, and when the second segment 12 is reset to extend horizontally relative to the first segment 11, the height of the second segment body 121 relative to the horizontal plane is greater than the height of the first segment 11 relative to the horizontal plane. The second segment body 121 is provided with a mounting groove 1211, which extends along the length direction of the second segment body 121 and passes through both ends of the second segment body 121. The mounting groove 1211 is used to install the tail cable 101.
[0048] The length of the bent section 122 can be much shorter than the length of the second body section 121, and the two sections can be arranged in an L-shape. A shaft hole can be provided on the bent section 122, and the bent section 122 can be provided between the two ear plates 112 so that the rotating shaft 111 can be rotatably connected to the shaft hole.
[0049] In the above embodiment, the mounting groove 1211 is disposed on the second body 121, and the tail cable 101 is accommodated in the mounting groove 1211. Since the height of the second body 121 relative to the horizontal plane is greater than the height of the first body 11 relative to the horizontal plane, the tail cable 101 located outside the mounting groove 1211 will pass over the first body 11 above it. That is to say, at the connection between the first body 11 and the second body 12, the tail cable 101 can naturally extend and pass over it without bending or other easily damaged cable situations, thereby extending the service life of the tail cable 101 and ensuring the normal operation of the electric shovel 100.
[0050] In some embodiments, the electric shovel tail rod protection device may further include a protective sleeve that is fitted over the outside of the tail cable 101, and at least a portion of the protective sleeve is located within the mounting groove 1211.
[0051] By installing a protective sleeve, the tail cable 101 is protected, preventing it from being damaged by wear and tear, thereby extending its service life and ensuring the normal operation of the electric shovel 100. Specifically, the protective sleeve can be a rubber sleeve.
[0052] In some embodiments, the mounting groove 1211 may include a first end away from the first segment 11 and a second end close to the first segment 11; the length of the protective sleeve is greater than the length of the mounting groove 1211, one end of the protective sleeve extends out of the first end of the mounting groove 1211, the other end of the protective sleeve extends out of the second end of the mounting groove 1211, and extends to the root of the tail cable 101.
[0053] During the movement of the electric shovel 100 or the rotation of the second section 12 relative to the first section 11, the tail cable 101 contacts the first end, the second end, and the first section 11 of the mounting groove 1211 through the protective sleeve, thereby preventing wear on the tail cable 101 at the first end port, the second end port, and the first section 11, thus further extending the service life of the tail cable 101 and better ensuring the normal operation of the electric shovel 100.
[0054] In some embodiments, see Figure 1 and Figure 2The first segment 11 may include two first support rods 113, one end of which is connected to the other end of which is connected to the electric shovel 100, and the other ends of which are spaced apart by a preset distance. The plane in which the two first support rods 113 are located is parallel or perpendicular to the horizontal plane. One end of the second segment 12 is rotatably connected to the connection point of the two first support rods 113.
[0055] Among them, one end of the two first support rods 113 is connected and the other end is spaced apart by a preset distance. That is to say, the two first support rods 113 are arranged in a triangle, which not only improves the overall strength of the first section 11, but also improves the connection strength between the first section 11 and the electric shovel 100, thereby improving the connection strength between the tail rod 1 and the electric shovel 100.
[0056] The planes on which the two first support rods 113 are located can be parallel or perpendicular to the horizontal plane, so as to better bear the external force applied by the second section 12, thereby further improving the connection strength between the tail rod 1 and the electric shovel 100.
[0057] In some embodiments, see Figure 1 and Figure 2 The first segment 11 may also include a second support rod 114 and at least one third support rod 115. One end of the second support rod 114 is connected to the connection point of the two first support rods 113, and the other end of the second support rod 114 is connected to the electric shovel 100. At least one third support rod 115 is connected between the two first support rods 113, thereby further improving the overall strength of the first segment 11 and the connection strength between the first segment 11 and the electric shovel 100, thereby further improving the connection strength between the tail rod 1 and the electric shovel 100.
[0058] This utility model embodiment also provides an electric shovel, including the aforementioned electric shovel tail rod protection device.
[0059] The electric shovel 100 provided in this embodiment includes a tail rod protection device. This device comprises a first segment 11 and a second segment 12, rotatably connected. The first segment 11 is connected to the electric shovel 100. This allows the second segment 12 to rotate relative to the first segment 11 and tilt upwards under the influence of the material 200 when the tail rod 1 contacts the material 200, preventing a rigid collision with the material 200. When the tail rod 1 separates from the material 200, the second segment 12 returns to a horizontal position to support the tail cable 101. Compared to the prior art, the technical solution provided in this embodiment splits the tail rod 1, allowing the second segment 12 to rotate relative to the first segment 11 and tilt upwards relative to the first segment 11 when in contact with the material 200. This avoids a rigid collision between the tail rod 1 and the material 200, preventing deformation of the tail rod 1 and ensuring its protective function for the tail cable 101.
[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A dragline tail rod protection device, said dragline having a tail cable provided thereon, characterised by, include: The tail rod includes a first section and a second section. One end of the first section is rotatably connected to one end of the second section. The other end of the first section is used to connect to the electric shovel. The second section is used to rotate relative to the first section and tilt upward when in contact with the material, and to return to a horizontal extension relative to the first section when separated from the material. At least the second segment of the first segment and the second segment is used to install the tail cable.
2. The electric shovel tail rod protection device according to claim 1, characterized in that, Also includes: A limiting part is disposed on the first segment and / or the second segment, the limiting part being used to limit the second segment to extend horizontally relative to the first segment when the second segment is separated from the material.
3. The electric shovel tail rod protection device according to claim 2, characterized in that, The limiting part includes a rope, one end of which is connected to the end of the second segment away from the first segment, and the other end of which is connected to the electric shovel. The rope is used to bend when the second segment is tilted upward relative to the first segment, and to straighten when the second segment returns to its horizontal extension relative to the first segment. And / or, The limiting part includes a limiting plate, the limiting plate includes a limiting end, the limiting plate is connected to the first segment, and the limiting end extends to the bottom of the second segment; The limiting end is used to separate from the second segment when the second segment is tilted upward relative to the first segment, and to abut against the second segment when the second segment is reset to extend horizontally relative to the first segment.
4. The electric shovel tail rod protection device according to claim 1, characterized in that, A pivot is provided at one end of the first segment; One end of the second section is provided with a shaft hole, and the rotating shaft is rotatably connected to the shaft hole.
5. The electric shovel tail rod protection device according to claim 1, characterized in that, The second segment includes a second segment body and a bent segment connected to the second segment body and bent relative to the second segment body. The bent segment is rotatably connected to the first segment, and when the second segment is reset to extend horizontally relative to the first segment, the height of the second segment body relative to the horizontal plane is greater than the height of the first segment relative to the horizontal plane. The second section of the body is provided with a mounting groove, which extends along the length of the second section of the body and passes through both ends of the second section of the body. The mounting groove is used to install the tail cable.
6. The dragline tail rod protection device of claim 5, wherein, Also includes: A protective sleeve is fitted over the outside of the tail cable, and at least a portion of the protective sleeve is located within the mounting groove.
7. The electric shovel tail rod protection device according to claim 6, characterized in that, The mounting groove includes a first end away from the first segment and a second end close to the first segment; The length of the protective sleeve is greater than the length of the mounting groove. One end of the protective sleeve extends out of the first end of the mounting groove, and the other end of the protective sleeve extends out of the second end of the mounting groove and extends to the root of the tail cable.
8. The electric shovel tail rod protection device according to claim 1, characterized in that, The first segment includes two first support rods, one end of the two first support rods is connected to each other, the other end of the two first support rods is connected to the electric shovel, and the other ends of the two first support rods are spaced apart by a preset distance. The plane in which the two first support rods are located is parallel or perpendicular to the horizontal plane. One end of the second segment is rotatably connected to the connection point of the two first support rods.
9. The electric shovel tail rod protection device according to claim 8, characterized in that, The first segment also includes a second support rod and at least one third support rod, one end of the second support rod being connected to the connection point of the two first support rods, and the other end of the second support rod being connected to the electric shovel; at least one of the third support rods is connected between the two first support rods.
10. A dragline comprising: Includes the electric shovel tail rod protection device as described in any one of claims 1 to 9.