Stepped grounding device

Abstract

The invention relates to the technical field of conductive connecting devices, and discloses a stepped grounding device which comprises an outer grounding piece, a first connecting through hole and a second connecting through hole are formed in the outer grounding piece, a first connecting piece is installed in the first connecting through hole, and a first conical part is detachably installed at the bottom of the first connecting piece. A second connecting piece with a second conical part mounted at the bottom is mounted in the second connecting through hole; when the first conical part and the second conical part are located at the first station, a limiting rod for preventing the first conical part from rotating relative to the second conical part is arranged between the first conical part and the second conical part; and when the second conical part and the second conical part are located at the second station, inner grounding columns are arranged in the first connecting through hole and the second connecting through hole in a sliding manner. According to the device, the first conical part is prevented from rotating relative to the second conical part, and the downward moving efficiency is guaranteed; and the two inner grounding columns move downwards at the same time, so that the grounding device is prevented from inclining in the downward moving process at the second stage.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection devices, and particularly to a stepped grounding device. Background Art

[0002] During grounding, it is necessary to use a grounding device to connect an electrical device to the ground. Generally, the grounding device includes a grounding post, and the lower part of the grounding post is generally a conical structure and the grounding post is hammered into the ground by an external force. The existing grounding post is an integral structure, and the stress points at the bottom and top of the grounding post do not change during the downward hammering process, resulting in the grounding post being prone to tilt. Since the grounding post is generally relatively long, if the grounding post tilts during the downward hammering process, the depth of the grounding post extending downward is relatively small, and a grounding post with a relatively large tilt needs to be pulled out and reinstalled. Summary of the Invention

[0003] To solve the technical problems in the background art, the present invention proposes a stepped grounding device.

[0004] A stepped grounding device proposed by the present invention includes an outer grounding member, a first connection through hole and a second connection through hole with axes parallel to the axis of the outer grounding member are formed on the outer grounding member, a first connecting member is installed in the first connection through hole, a second connecting member is installed in the second connection through hole, a first conical part is detachably installed at the bottom of the first connecting member, a second conical part is detachably installed at the bottom of the second connecting member, and both the first conical part and the second conical part have a first working position and a second working position; When the first conical part and the second conical part are in the first working position, the first conical part and the second conical part are spliced to form a preliminary conical part, and a limiting rod for preventing the first conical part from rotating relative to the second conical part is provided between the first conical part and the second conical part; When the second conical part and the second conical part are in the second working position, the extension lines of the axes of the first conical part and the second conical part both intersect with the axis of the outer grounding member, and an inner grounding post is slidably provided in the first connection through hole and the second connection through hole.

[0005] It should be noted that the number of the first connection through hole and the second connection through hole can be one or multiple respectively, and the corresponding first conical part, first connecting member, second connecting member and second conical part can be multiple or one.

[0006] The splicing of the first conical part and the second conical part is achieved through the settings of the first connecting piece, the second connecting piece and the limiting rod, so as to realize the first-stage hammering. By applying a downward force to the external grounding piece, the external grounding piece is moved downward into the ground; during this process, the first connecting piece and the second connecting piece realize the preliminary positioning of the first conical part and the second conical part, and the limiting rod realizes the relative positioning of the first conical part and the second conical part, avoiding the relative rotation of the first conical part and the second conical part during the hammering of the external grounding piece.

[0007] By disassembling the first connecting piece and the second connecting piece and through the setting of the inner connecting column, the first conical part and the second conical part are made to be in the second working position, and by applying a downward hammering force to the internal grounding column by an external force, the external grounding column is moved downward into the ground.

[0008] In the present invention, on the premise of facilitating the change of the force application position during the downward movement of the grounding device, the relative rotation of the first conical part and the second conical part is avoided, ensuring the efficiency of the downward movement. Further, the internal grounding columns in the first connecting through hole and the second connecting through hole apply downward forces simultaneously to make the two internal grounding columns move downward simultaneously, further ensuring to a certain extent that the grounding device moves vertically downward.

[0009] As a further optimized solution of the present invention, a first limiting groove is formed on the surface of the first conical part opposite to the second conical part, and a second limiting groove is formed on the surface of the second conical part opposite to the first conical part. When the first conical part and the second conical part are in the first working position, the first limiting groove and the second limiting groove form a limiting cavity, the limiting rod is located in the limiting cavity, the bottoms of the first connecting piece and the second connecting piece both have parts in contact with the limiting rod, and the side surface and the bottom surface of the limiting rod are in contact with the side surface and the bottom surface of the limiting cavity; And a separation distance is formed between the upper surface of the limiting rod and the top surfaces of the first limiting groove and the second limiting groove, so that after removing the constraints of the first connecting piece and the second connecting piece on the limiting rod, the limiting rod can tilt in the limiting cavity, so that the first conical part and the second conical part can rotate relative to each other under the action of an external force.

[0010] As a further optimized solution of the present invention, the limiting rod is installed at the top of the first limiting groove through an elastic traction member, and when the limiting rod contacts the bottom of the first limiting groove, the elastic traction member is in an extended state.

[0011] As a further optimized solution of the present invention, the limiting cavity has a connected partition part and a positioning part. The partition part is located above the positioning part, and the width of the partition part is greater than that of the positioning part. When the preliminary conical part moves downward, the limiting rod is located within the positioning part.

[0012] As a further optimized solution of the present invention, one side of the first conical part away from the external grounding part and / or one side of the second conical part away from the external grounding part are connected to the external grounding part through a flexible connecting piece.

[0013] As a further optimized solution of the present invention, a receiving groove is formed at the bottom of the external grounding part. When the first conical part and the second conical part are in the first working position, the flexible connecting piece is located within the receiving groove.

[0014] As a further optimized solution of the present invention, a first groove is formed on the outer side of the first conical part. When the preliminary conical part moves downward, the first groove is filled with soil.

[0015] As a further optimized solution of the present invention, the first groove gradually slopes downward from the outside to the inside.

[0016] As a further optimized solution of the present invention, a second groove is formed on the outer side of the second conical part. When the preliminary conical part moves downward, the second groove is filled with soil.

[0017] As a further optimized solution of the present invention, the second groove gradually slopes downward from the outside to the inside.

[0018] In the present invention, the proposed stepped grounding device has a simple structure. On the premise of facilitating the change of the force application position during the downward movement of the grounding device, it avoids the relative rotation of the first conical part with respect to the second conical part, ensuring the efficiency of the downward movement. Moreover, downward forces are simultaneously applied to the inner grounding column in the first connection through-hole and the inner grounding column in the second connection through-hole, causing the two inner grounding columns to move downward simultaneously. To a certain extent, this further ensures the vertical downward movement of the grounding device and prevents the grounding device from tilting during the second-stage downward movement.

[0019] Additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 of the present invention Figure 2Partial enlarged view of area A; Figure 4 Schematic structural view of the first conical part and the second conical part of the present invention when in the second working position; Figure 5 Schematic structural view of the first conical part and the second conical part in some embodiments of the present invention; In the figure: 1. Outer grounding part; 10. First connection through hole; 11. Second connection through hole; 12. Accommodating groove; 2. First connecting part; 20. First clamping part; 21. First extension rod; 3. Second connecting part; 30. Second clamping part; 31. Second extension rod; 4. First conical part; 40. First limiting groove; 41. First clamping hole; 42. First communication hole; 43. First groove; 5. Second conical part; 50. Second limiting groove; 51. Second clamping hole; 52. Second communication hole; 53. Second groove; 6. Limiting rod; 7. Flexible connecting part; 8. Elastic traction part; 9. Inner grounding column. Detailed implementation manners

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar symbols represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0022] As Figures 1 - 4 shown, a stepped grounding device includes an outer grounding part 1. The outer grounding part 1 is provided with a first connection through hole 10 and a second connection through hole 11. The axes of the first connection through hole 10 and the second connection through hole 11 are both parallel to the axis of the outer grounding part 1. A first connecting part 2 is detachably installed in the first connection through hole 10. A first conical part 4 is detachably installed at the bottom of the first connecting part 2. A second connecting part 3 is detachably installed in the second connection hole. A second conical part 5 is detachably installed at the bottom of the second connecting part 3; Both the first conical part 4 and the second conical part 5 have a first working position and a second working position; When the first conical part 4 and the second conical part 5 are in the first working position, the first conical part 4 and the second conical part 5 form a preliminary conical part. The maximum outer diameter of the preliminary conical part is equal to the outer diameter of the external grounding part 1. Applying a downward force to the top of the external grounding part 1 causes the external grounding part 1 to move downward under the guidance of the preliminary conical part. It should be noted that when the first conical part 4 and the second conical part 5 are in the first working position, the end of the first conical part 4 has a part connected to the first connecting part 2 and also has a part in contact with the bottom of the external grounding part 1. Similarly, when the second conical part 5 is in the first working position, the second conical part 5 has a part connected to the second connecting part 3 and also has a part in contact with the bottom of the external grounding part 1. And a limiting rod 6 is provided between the first conical part 4 and the second conical part 5 to prevent the first conical part 4 from rotating relative to the second conical part 5. When the conical part moves downward, the upper end surface of the external grounding part 1 receives a downward force, while the first connecting part 2 and the second connecting part 3 are not directly struck by external objects. Specifically, the height of the upper end surfaces of the first connecting part 2 and the second connecting part 3 is lower than the height of the upper end surface of the external grounding part 1. Specifically, the first connecting through hole 10 and the second connecting through hole 11 are stepped holes, and the diameters above the first connecting through hole 10 and the second connecting through hole 11 are larger than the diameters below, facilitating the installation and fixation of the first connecting part 2 and the second connecting part 3. The first connecting part 2 and the second connecting part 3 can be fixed to the external grounding part 1 by existing fixing pins or screws; When the first conical part 4 and the second conical part 5 are in the second working position, the axes of the first conical part 4 and the second conical part 5 intersect with the axis of the external grounding part 1. An internal grounding column 9 with a conical end is placed in the first connecting through hole 10 and the second connecting through hole 11, and then a downward force is applied to the internal grounding column 9 simultaneously to make the internal grounding column 9 move downward, slide out of the external grounding part 1, and extend into the ground.

[0023] In the early stage of installing the grounding device, the first connecting member 2 and the second connecting member 3 are respectively installed in the first connecting through hole 10 and the second connecting through hole 11, and the first conical part 4 and the second conical part 5 are in the first working position. Then, the grounding device is hammered by an external force, and the top of the external grounding member 1 is subjected to the downward hammering external force. Under the action of the external force, the initial conical part guides the external grounding member 1 to move downward; when the external grounding member 1 moves downward for a certain distance, the first connecting member 2 and the second connecting member 3 are disassembled to remove the constraints on the first conical part 4 and the second conical part 5, and the grounding device is hammered by an external force. The inner grounding column 9 is placed in the second connecting through hole 11, and when the inner grounding column 9 is pushed downward, the outer grounding member 1 is pulled upward to ensure that the lower end of the inner grounding column 9 extends out of the first connecting through hole 10 and the second connecting through hole 11, and at the same time, the first conical part 4 and the second conical part 5 are squeezed outward to prevent the first conical part 4 or the second conical part 5 from affecting the downward movement of the inner grounding column 9, and then the inner grounding column 9 is hammered downward under the action of an external force to realize the movement of the inner grounding column 9 downward, and in this process, the conical end of the inner grounding column 9 realizes the guiding function, and the length of the inner grounding column 9 is greater than the length of the outer grounding member 1; It should be noted that the external grounding member 1 has a connection structure such as a connection ring, which is the same as that of the existing external grounding member 1, so as to achieve connection with the existing grounding wire.

[0024] In order to prevent the first conical part 4 and the second conical part 5 from being separated when the preliminary conical part guides the external ground member 1 to move downward (i.e., when the external ground member 1 is hit or pounded), Figure 3 As shown, in some embodiments, specifically, a first limiting groove 40 is formed on a surface of the first conical part 4 opposite to the second conical part 5, and a second limiting groove 50 is formed on a surface of the second conical part 5 opposite to the first conical part 4. When the first conical part 4 and the second conical part 5 are in the first working position, the first limiting groove 40 and the second limiting groove 50 form a limiting cavity, and the limiting rod 6 is located in the limiting cavity. The bottom of the first connecting member 2 and the bottom of the second connecting member 3 both have a portion that conflicts with the limiting rod 6, and the side and bottom of the limiting rod 6 are in contact with the side and bottom of the limiting cavity. The upper surface of the limit rod 6 forms a separation distance with the top surfaces of the first limit groove 40 and the second limit groove 50, so that after the constraints of the first connecting member 2 and the second connecting member 3 on the limit rod 6 are removed, the limit rod 6 can be tilted in the limit cavity, so that the first conical part 4 and the second conical part 5 can rotate relative to each other under the action of external force.

[0025] During the assembly process, first align the first conical portion 4 and the second conical portion 5, and place the limiting rod 6 in the first limiting groove 40 and the second limiting groove 50. Then, place the first connecting member 2 and the second connecting member 3 in the first connecting through-hole 10 and the second connecting through-hole 11 respectively, and install the first connecting member 2 on the first conical portion 4 by snap-fitting, and install the second connecting member 3 on the second conical portion 5 by snap-fitting. The bottom of the first connecting member 2 has a first extension rod 21, and the first extension rod 21 extends into the first limiting groove 40 and abuts against the limiting rod 6. The bottom of the second connecting member 3 has a second extension rod, and the second extension rod 31 extends into the second limiting groove 50 and abuts against the limiting rod 6.

[0026] Specifically, the outer diameter of the first connecting member 2 is the same as the aperture of the first connecting hole. The first conical portion 4 is provided with a first snap-fitting hole 41. The bottom of the first connecting member 2 has a first snap-fitting member 20, and the first snap-fitting member 20 matches the first snap-fitting hole 41. The first conical portion 4 is provided with a first communication hole 42 that communicates the snap-fitting hole and the first limiting groove 40. The first extension rod 21 is located at the bottom of the first snap-fitting member 20. Similarly, the second conical portion 5 is provided with a second snap-fitting hole 51 and a second communication hole 52 that communicates the second snap-fitting hole 51 and the second limiting groove 50. The bottom of the second connecting member 3 has a second snap-fitting member 30, and the second extension rod 31 is installed at the bottom of the second snap-fitting member 30.

[0027] Preferably, the limiting rod 6 is installed at the top of the first limiting groove 40 through an elastic traction member 8. When the limiting rod 6 contacts the bottom of the first limiting groove 40, the elastic traction member 8 is in an extended state. The elastic traction member 8 can be a rubber strip. When the external force applied to the limiting rod 6 is removed, under the action of the elastic traction member 8, one side of the limiting rod 6 moves upward a certain distance and tilts, which is convenient for the relative rotation of the first conical portion 4 and the second conical portion 5 under the action of an external force.

[0028] As a further optimized solution of the present invention, the limiting cavity has a connected partition portion and a positioning portion. The partition portion is located above the positioning portion, and the width of the partition portion is greater than the width of the positioning portion. When the preliminary conical portion moves downward, the limiting rod 6 is located in the positioning portion, and the side surface of the limiting rod 6 contacts the side surface of the positioning portion. When the external forces of the first connecting member 2 and the second connecting member 3 on the limiting rod 6 are removed, one side of the limiting rod 6 is located in the partition portion under the action of the elastic traction member 8, which is further convenient for the relative rotation and separation of the first conical portion 4 and the second conical portion 5.

[0029] In some embodiments, preferably, the first conical portion 4 and the second conical portion 5 are installed at the bottom of the outer grounding member 1 through a flexible connecting member 7, and one side of the first conical portion 4 away from the outer grounding member 1 is installed at the bottom of the outer grounding member 1 through the flexible connecting member 7, and one side of the second conical portion 5 away from the outer grounding member 1 is installed at the bottom of the outer grounding member 1 through the flexible connecting member 7. The flexible connecting member 7 can be components such as a wire chain or a conductive rope in the prior art. Then, after the outer grounding member 1 moves downward by a certain displacement and the first connecting member 2 and the second connecting member 3 are disassembled, the outer grounding member 1 is lifted upward by a certain displacement, so that the first conical portion 4 and the second conical portion 5 move downward relative to the outer grounding member 1 by a certain displacement, and the first conical portion 4 and the second conical portion 5 are pulled by the flexible connecting member 7. Due to the gravitational force, the extension lines of the axes of the first conical portion 4 and the second conical portion 5 intersect with the axis of the outer grounding member 1; Then, an inner grounding post 9 is inserted into the first connection hole and the second connection hole, and the inner grounding post 9 is pressed downward to rotate the first conical portion 4 and the second conical portion 5 so that the first conical portion 4 and the second conical portion 5 abut against the side wall of the hole formed by the downward movement of the outer grounding member 1.

[0030] Preferably, a receiving groove 12 for receiving the flexible connecting member 7 is formed at the bottom of the outer grounding member 1. When the upper end surfaces of the first conical portion 4 and the second conical portion 5 abut against the outer grounding member 1, the flexible connecting member 7 is located in the receiving groove 12.

[0031] In order to prevent the first conical portion 4 and the second conical portion 5 from separating during the process of the preliminary conical portion guiding the outer grounding member 1 to move downward, as Figure 5 shown, in some embodiments, preferably, a first groove 43 is formed on the outer side of the first conical portion 4. When the preliminary conical portion moves downward, the first groove 43 is filled with soil, thereby increasing the force-bearing area of the outer side surface of the first conical portion 4 and further increasing the friction between the soil and the first conical portion 4.

[0032] Preferably, the first groove 43 gradually slopes downward from the outside to the inside, that is, the first groove 43 slopes upward gradually from the end away from the outside of the preliminary conical portion to the end close to the outside of the preliminary straight portion, further preventing the first conical portion 4 and the second conical portion 5 from separating during the downward movement of the preliminary conical portion.

[0033] In order to prevent the first conical portion 4 and the second conical portion 5 from separating during the process of the preliminary conical portion guiding the outer grounding member 1 to move downward, as Figure 5 shown, in some embodiments, preferably, a second groove 53 is formed on the outer side of the second conical portion 5. When the preliminary conical portion moves downward, the second groove 53 is filled with soil, thereby increasing the force-bearing area of the outer side surface of the second conical portion 5 and further increasing the friction between the soil and the second conical portion 5.

[0034] Preferably, the second groove 53 slopes gradually downward from the outside to the inside, further preventing the separation of the first conical portion 4 and the second conical portion 5 during the downward movement of the preliminary conical portion.

[0035] To ensure the stability of the connection, a conductive connecting member is further included. The conductive connecting member can be plate-shaped. The conductive connecting member is fixed to the end of the inner grounding post 9 by screws and fixed to the outer grounding member 1 by screws.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "lateral", "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature.

[0040] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A stepped grounding device, comprising an external grounding member, characterized in that: The external grounding member is provided with a first connecting through hole and a second connecting through hole, the axis of which is parallel to the axis of the external grounding member; a first connecting member is installed in the first connecting through hole, a second connecting member is installed in the second connecting through hole, a first conical part is detachably installed at the bottom of the first connecting member, a second conical part is detachably installed at the bottom of the second connecting member, and the first conical part and the second conical part both have a first station and a second station; When the first tapered portion and the second tapered portion are located at the first working position, the first tapered portion and the second tapered portion are spliced ​​to form a preliminary tapered portion, and a limiting rod is provided between the first tapered portion and the second tapered portion to prevent the first tapered portion from rotating relative to the second tapered portion; When the second conical part and the second conical part are located at the second workstation, the extension lines of the axis of the first conical part and the extension lines of the axis of the second conical part both intersect with the axis of the external grounding member, and an internal grounding column is slidably provided in the first connecting through hole and the second connecting through hole.

2. The stepped grounding device according to claim 1, characterized in that: A first limiting groove is formed on a surface of the first conical part opposite to the second conical part, and a second limiting groove is formed on a surface of the second conical part opposite to the first conical part. When the first conical part and the second conical part are in the first working position, the first limiting groove and the second limiting groove form a limiting cavity, the limiting rod is located in the limiting cavity, the bottom of the first connecting member and the bottom of the second connecting member both have a portion that contacts the limiting rod, and the side and bottom of the limiting rod contact the side and bottom of the limiting cavity. The upper surface of the limiting rod forms a separation distance with the top surfaces of the first limiting groove and the second limiting groove, so that after the constraints of the first connecting member and the second connecting member on the limiting rod are removed, the limiting rod can be tilted in the limiting cavity.

3. The stepped grounding device according to claim 2, characterized in that: The limiting rod is installed on the top of the first limiting groove through an elastic traction member, and when the limiting rod contacts the bottom of the first limiting groove, the elastic traction member is in an extended state.

4. The stepped grounding device according to claim 2, characterized in that: The limiting cavity has a connecting partition part and a positioning part, the partition part is located above the positioning part, and the width of the partition part is greater than the width of the positioning part. When the preliminary conical part moves downward, the limiting rod is located in the positioning part.

5. The stepped grounding device according to claim 1, characterized in that: A side of the first cone that is partially away from the external ground member and / or a side of the second cone that is partially away from the external ground member are connected to the external ground member through a flexible connection member.

6. The stepped grounding device according to claim 5, characterized in that: A receiving groove is formed at the bottom of the external grounding member, and when the first conical portion and the second conical portion are in the first working position, the flexible connecting member is located in the receiving groove.

7. The stepped grounding device according to claim 1, characterized in that: A first groove is formed on the outer side of the first conical part, and soil is filled in the first groove when the preliminary conical part moves downward.

8. The stepped grounding device according to claim 7, characterized in that: The first groove gradually slopes downward from the outside to the inside.

9. The stepped grounding device according to claim 1, characterized in that: A second groove is formed on the outer side of the second conical part, and soil is filled in the second groove when the preliminary conical part moves downward.

10. The stepped grounding device according to claim 9, characterized in that: The second groove gradually slopes downward from the outside to the inside.

Images