Quickly mounted and dismounted EMU grounding rod

Abstract

A quick detachable EMU grounding rod, comprising a connecting part and a plug-in part, the top surface of the plug-in part is fixedly connected with one end of an insulating rod, and the plug-in part can be inserted into the connecting part; the connecting part comprises a cylinder, the upper and lower surfaces of the cylinder are both provided with a slot, a connecting assembly is installed in the slot, the plug-in part can be inserted into the slot, and the connecting assembly is connected with the plug-in part; the coaxiality of a plurality of insulating rods after assembly is ensured, the rod body is prevented from shaking during grounding operation, and the control of the rod body by a worker is improved; on the other hand, the precise cooperation of the locking piece with the plug rod and the oblique plate insertion hole, combined with the elastic pre-tightening of the second spring, forms a double locking structure, compared with the defects of easy wear and increased gap of the traditional thread, the wear rate of the connecting node of the structure is greatly reduced, even after several hundred times of assembly and disassembly, the stable connection state can still be maintained, the grounding effect caused by poor contact is avoided, and the personal safety of the operation and maintenance personnel is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of high-speed train equipment technology, specifically relating to a grounding rod for high-speed trains that can be quickly installed and removed. Background Technology

[0002] In the operation and maintenance of high-speed trains, the grounding operation of the overhead contact system is a crucial step in ensuring personnel safety. The grounding rod, as the core component for reliably connecting the contact system to the ground, directly impacts the overall progress of the maintenance work due to its installation efficiency and convenience. Currently, the grounding rods used for overhead contact system grounding operations on high-speed trains are mainly composed of multiple insulating rods connected by threads. Because the length of a single insulating rod is limited and cannot meet the height requirements between the contact system and the ground, at least 3-5 insulating rods must be sequentially rotated and connected to form a complete grounding rod that meets the operating height requirements. However, this traditional threaded connection method has significant technical drawbacks: First, it is time-consuming to install. The threaded connection between each insulating rod requires repeated manual rotation and tightening. If 4-5 insulating rods need to be connected, the assembly process alone takes 5-8 minutes. In emergency grounding scenarios (such as maintenance of a sudden contact network failure), the excessive installation time increases the operational risk. Second, it is not convenient to operate. The threaded connection has high requirements for the installation angle. Workers need to hold the upper and lower insulating rods with both hands, accurately align the threaded interface, and continuously apply force to rotate. Especially when connecting the upper insulating rod, it is necessary to overcome the weight of the rod to maintain stability, which is quite strenuous. Third, long-term use is prone to connection failure. The threaded interface is prone to wear after repeated installation and removal, which leads to an increase in the connection gap between the insulating rods. This not only affects the overall stability of the grounding rod but may also reduce the grounding effect due to poor contact, posing a threat to the personal safety of maintenance personnel. Furthermore, the traditional grounding rod connection structure lacks anti-misalignment design. During installation, if the threaded mating angle deviates, adjacent insulating rods are prone to radial misalignment. This not only requires disassembly and adjustment but may also cause shaking during subsequent grounding operations due to uneven force on the rods, increasing the difficulty for operators to control. With the increasing demands for efficiency and safety in high-speed train operation and maintenance, traditional threaded grounding rods can no longer meet the needs of rapid and reliable grounding operations. There is an urgent need to develop a new grounding rod structure that can quickly install and remove multiple insulating rods and stably connect them to solve the problems of time-consuming installation, inconvenient operation, and poor connection stability in existing technologies. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a quick-loading and unloading grounding rod for high-speed trains.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a quick-loading and unloading EMU grounding rod, including a connecting part and a plug-in part, wherein the top surface of the plug-in part is fixedly connected to one end of the insulating rod, and the plug-in part can be inserted into the connecting part; The connecting part includes a cylinder with slots on both the top and bottom surfaces. A connecting component is installed in the slot, and the plug-in part can be inserted into the slot. The connecting component is connected to the plug-in part.

[0005] Preferably, the connecting component includes a long strip block, one end of which is fixedly installed on the inner wall of one end of the slot, the other end of which is located outside the cylinder, and inclined plates are fixedly installed on both sides of the other end of the long strip block, with insertion holes opened on one side of the inclined plates.

[0006] Preferably, an annular block is provided inside the slot, and a long strip block passes through the inner ring of the annular block. One end face of the annular block is fixedly connected to the inner wall of one end of the slot by several first springs.

[0007] Preferably, the plug-in part includes a cylindrical plug-in block with a groove on one end face. A long strip or an inclined plate can be inserted into the groove, and the plug-in block can be inserted into the slot. A locking member is installed on the plug-in part, and the locking member can be locked to the inclined plate.

[0008] Preferably, the groove has a square cross-section.

[0009] Preferably, the locking element includes: Two through holes are provided on both sides of the plug block, and the through holes communicate with the inside of the groove; Two T-shaped rods, wherein the horizontal rod of the T-shaped rod is slidably installed in the through hole, and the vertical rod of the T-shaped rod is located outside the plug block; Two connecting rods, one side bottom of which is fixedly connected to one end face of the transverse bar of the T-shaped rod, and the connecting rod is located in the groove; Two insertion rods are provided, with one end of each insertion rod fixedly installed on the top side of one side of the connecting rod, and the insertion rods can be inserted into the insertion holes.

[0010] Preferably, the vertical rod of the T-shaped rod is fixedly connected to the outer peripheral surface of the plug block by a second spring, and the horizontal rod of the T-shaped rod passes through the second spring.

[0011] Preferably, the outer surface of the cylinder and the outer surface of the plug block are both covered with an insulating material layer.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: (1) Significantly improve installation efficiency and shorten operation time: Compared with the traditional threaded connection method that requires repeated rotation to complete the assembly of a single insulating rod, this quick-loading and unloading EMU grounding rod, through the "plug-in part-connection part" adaptation structure, only requires inserting the plug-in block at the end of the insulating rod into the slot of the connection part, and with the quick locking of the connection component and the locking part, the connection and fixation of a single insulating rod can be completed; (2) Reduced operational intensity and improved ease of use: Traditional threaded connections require workers to hold the upper and lower insulating rods with both hands to precisely align them with the threaded interface and continuously apply force to rotate them while overcoming the weight of the rods. This requires high operational intensity and strict angle requirements. In contrast, this structure does not require complex angle calibration. Workers can hold the connecting part (cylinder) with one hand and insert the plug of the insulating rod into the slot with the other hand. With the buffering effect of the ring block and the first spring, only a slight press is needed to complete the initial positioning. Then, the locking is achieved through the convenient operation of the T-shaped rod. The entire process does not require continuous force, effectively reducing the operational intensity of workers. Even at heights or in confined working spaces, the connection of the insulating rod can be easily completed, adapting to the usage needs of different working environments. (3) Enhance connection stability and avoid misalignment and failure risks: On the one hand, this structure adopts a square cross-section groove and a square strip block for matching. With the limiting effect of the inclined plate, after the plug block is inserted into the slot, it can directly limit the radial rotation of the plug block, completely solve the problem of misalignment of the insulating rod caused by the angle deviation of the traditional threaded connection, ensure that multiple insulating rods always maintain coaxiality after assembly, avoid the rod body shaking during grounding operation, and improve the staff's control over the rod body; on the other hand, the locking part forms a double locking structure through the precise cooperation between the plug rod and the inclined plate insertion hole, combined with the spring force pre-tightening of the second spring. Compared with the defects of traditional threads being easy to wear and having increased gaps, the wear rate of the connection node of this structure is greatly reduced. Even after hundreds of loading and unloading, it can still maintain a stable connection state, avoid the grounding effect reduction caused by poor contact, and ensure the personal safety of maintenance personnel. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the connecting part; Figure 3 This is a schematic diagram of the internal structure of the connector; Figure 4 This is a schematic diagram of the internal structure of the connecting part; Figure 5 This is a schematic diagram showing the installation and fit of the plug and the connector. Figure 6 yes Figure 5 A magnified view of part A; Figure 7 yes Figure 5 A magnified view of part B; Figure 8 yes Figure 6 A magnified view of part C.

[0014] Explanation of reference numerals in the attached figures: 1. Cylinder; 2. Slot; 3. Long strip block; 4. Inclined plate; 5. Insertion hole; 6. Ring block; 7. First spring; 8. Insertion block; 9. Groove; 10. Through hole; 11. T-shaped rod; 12. Connecting rod; 13. Insertion rod; 14. Second spring; 15. Placement slot; 16. Support block. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1 The following is combined Figures 1-8 Further explanation of a quick-loading and unloading EMU grounding rod in Example 1, such as... Figure 1 As shown, it includes a connecting part and a plug-in part. The top surface of the plug-in part is fixedly connected to one end of the insulating rod, and the plug-in part can be inserted into the connecting part. The connecting part includes a cylinder 1, and slots 2 are opened on both the upper and lower surfaces of the cylinder 1. A connecting component is installed in the slot 2, and the plug-in part can be inserted into the slot 2. The connecting component is connected to the plug-in part.

[0018] When installing the grounding rod, taking two adjacent insulating rods as an example, the bottom of the upper insulating rod is inserted into the slot 2 on the top of the cylinder 1, and then the connecting assembly fixes the insertion part in the slot 2. The top of the lower insulating rod is inserted into the slot 2 on the bottom of the cylinder 1, and then the connecting assembly fixes the inserted insertion part in the slot 2, thus completing the connection of the two adjacent insulating rods.

[0019] like Figure 1 , Figure 2 , Figure 4 As shown, the connecting component includes a long strip 3. One end of the long strip 3 is fixedly installed on the inner wall of one end of the slot 2. The other end of the long strip 3 is located outside the cylinder 1. Inclined plates 4 are fixedly installed on both sides of the other end of the long strip 3. An insertion hole 5 is opened on one side of the inclined plate 4.

[0020] The cross-section of the long strip 3 is square. The upper long strip 3 is installed in the slot 2 such that the bottom surface of the long strip 3 is fixedly connected to the inner wall of the bottom surface of the slot 2, and the top surface of the long strip 3 is higher than the top surface of the cylinder 1. The lower long strip 3 is installed in the slot 2 such that the top surface of the long strip 3 is fixedly connected to the inner wall of the top surface of the slot 2, and the bottom surface of the long strip 3 is lower than the bottom surface of the cylinder 1. The inclination of the inclined plate 4 is as follows: Figure 2 As shown, the front and rear end faces of the long strip 3 and the front and rear end faces of the inclined plate 4 are respectively attached to the inner walls of the front and rear ends of the slot 2; during the process of inserting the plug into the slot 2, the long strip 3 and the inclined plate 4 are simultaneously inserted into the plug, and then connected to the components on the plug, locking the long strip 3 and the inclined plate 4 in the plug, and connecting the plug to the cylinder 1.

[0021] like Figure 4 , Figure 7 As shown, an annular block 6 is provided inside the slot 2, and a long strip block 3 passes through the inner ring of the annular block 6. One end face of the annular block 6 is fixedly connected to the inner wall of one end of the slot 2 by several first springs 7.

[0022] The bottom surface of the upper annular block 6 is fixedly connected to the inner wall of the bottom surface of the slot 2 by a first spring 7, and the top surface of the lower annular block 6 is fixedly connected to the inner wall of the top surface of the slot 2 by a first spring 7. Taking the upper slot 2 as an example, after the plug is inserted into the slot 2, the bottom of the plug contacts the top surface of the annular block 6. Then, press down slightly, and the plug will press the annular block 6 down. During this process, the connecting component and the parts on the plug are in contact. After the connection is completed, release the plug. Under the elastic force of the first spring 7, the annular block 6 pushes the plug upward. At this time, the connecting component and the parts on the plug are in a locked state, and the plug is installed in the slot 2, completing the installation of the upper insulating rod.

[0023] like Figure 3 As shown, the plug-in part includes a cylindrical plug-in block 8, with a groove 9 on one end face of the plug-in block 8. The long strip block 3 and the inclined plate 4 can be inserted into the groove 9, and the plug-in block 8 can be inserted into the slot 2. A locking member is installed on the plug-in part, and the locking member can be locked and connected with the inclined plate 4.

[0024] Taking the plug-in block 8 and the insulating rod located at the top as an example, the positional relationship between the plug-in block 8 and the insulating rod is explained. The bottom end of the insulating rod is fixedly connected to the top surface of the plug-in block 8. After the plug-in block 8 is inserted into the slot 2, the outer peripheral surface of the plug-in block 8 fits against the inner wall of the slot 2. The plug-in block 8 is inserted into the slot 2. During this process, the long strip block 3 and the inclined plate 4 enter the groove 9. After all the components are fully inserted, the locking part contacts the inclined plate 4 and locks with the inclined plate 4. The upper half of the long strip block 3 and the inclined plate 4 are installed in the groove 9, and the plug-in block 8 is installed in the slot 2. The two adjacent insulating rods are installed and connected.

[0025] like Figure 3 As shown, the cross-section of the groove 9 is square.

[0026] The square-shaped groove 9 and the square-shaped strip block 3 are fitted together, as well as the plate-shaped inclined plate 4. When the strip block 3 is inserted into the groove 9, the insertion block 8 can be prevented from rotating, and the two adjacent insulating rods can be prevented from being misaligned during use, so as to prevent the user from being unable to control the insulating rods.

[0027] like Figure 3 As shown, the locking element includes: Two through holes 10 are provided on both sides of the plug block 8, and the through holes 10 are connected to the inside of the groove 9. Two T-shaped rods 11, wherein the horizontal rod of the T-shaped rod 11 is slidably installed in the through hole 10, and the vertical rod of the T-shaped rod 11 is located outside the plug block 8; Two connecting rods 12, one side bottom end of the connecting rod 12 is fixedly connected to one end face of the transverse rod of the T-shaped rod 11, and the connecting rod 12 is located in the groove 9; Two insertion rods 13 are provided, with one end of each insertion rod 13 fixedly installed on the top side of one side of the connecting rod 12, and the insertion rod 13 can be inserted into the insertion hole 5.

[0028] As the inclined plate 4 enters the groove 9, it moves upward, causing the insertion block 8 to move the T-shaped rod 11, connecting rod 12, and insertion rod 13 downward. When they are about to contact each other, the inclined surface of the inclined plate 4 contacts the bottom end of the connecting rod 12, pushing the two connecting rods 12 in opposite directions, i.e., pushing the two T-shaped rods 11 in opposite directions. When the bottom surface of the insertion block 8 contacts the top surface of the annular block 6, the bottom end of the connecting rod 12 is still in contact with the inclined surface of the inclined plate 4. The insertion block 8 then presses down on the annular block 6, compressing the first spring 7, and at this time, the connecting rod 12 is located below the inclined plate 4. Then, push the two T-shaped rods 11 in opposite directions. The connecting rod 12 and the insertion rod 13 are located within the angle between the inclined plate 4 and the insertion block 8. Then, release the insertion block 8. Under the elastic force of the first spring 7, the insertion block 8 moves upward a certain distance, and the bottom end of the inclined plate 4 contacts the transverse rod of the T-shaped rod 11, limiting the upward displacement distance of the insertion block 8. Then, pull the two T-shaped rods 11 in opposite directions. The insertion rod 13 is inserted into the insertion hole 5, fixing the inclined plate 4 in the groove 9. At this time, the insertion block 8 is fixedly connected to the cylinder 1, connecting the two adjacent insulating rods.

[0029] like Figure 6 As shown, the vertical rod of the T-shaped rod 11 is fixedly connected to the outer peripheral surface of the plug block 8 by a second spring 14, and the horizontal rod of the T-shaped rod 11 passes through the second spring 14.

[0030] The second spring 14 applies a force away from the insertion block 8 to the vertical rod of the T-shaped rod 11. During the process of the inclined plate 4 entering the groove 9, after the inclined plate 4 contacts the connecting rod 12, the inclined surface of the inclined plate 4 pushes the two connecting rods 12 in opposite directions. After the inclined plate 4 passes the connecting rod 12, the two T-shaped rods 11 are pressed by hand and pushed in opposite directions, so that the insertion rod 13 is inserted into the insertion hole 5, completing the locking connection between the insertion rod 13 and the inclined plate 4.

[0031] The outer surfaces of the cylinder 1 and the plug block 8 are both covered with an insulating material layer.

[0032] The insulating material layer can be made of rubber. The cylinder 1 and the plug block 8 are wrapped with the insulating material layer, which can prevent the operator from contacting the live parts and ensure operational safety. The insulating material layer is not shown in the figure.

[0033] Example 2 like Figure 2 , Figure 5As shown, a square-section placement groove 15 is opened on the top surface of the long strip 3. A square-section support block 16 is fixedly installed on the inner wall of one end of the groove 9. When the long strip 3 is inserted into the groove 9, the support block 16 is inserted into the placement groove 15. The square-section placement groove 15 and support block 16 cooperate to prevent the support block 16 from shaking in the placement groove 15. When the cylinder 1 and the plug-in block 8 are fully engaged, the support block 16 enters the placement groove 15. Through the cooperation of the support block 16 and the long strip 3, the stability between the cylinder 1 and the plug-in block 8 can be improved, making the connection between the cylinder 1 and the plug-in block 8 more stable.

[0034] Installation process of plug block 8 and cylinder 1: Hold cylinder 1 with one hand and plug block 8 with the other hand, with the thumb and forefinger reserved and placed on the vertical rods of the two T-shaped rods 11. After inserting plug block 8 into slot 2, when it is necessary to press down, hold plug block 8 with the other hand and press down. When it cannot be pressed down, press the two T-shaped rods 11 in opposite directions with the thumb and forefinger. Then gradually reduce the force with the other hand, and plug block 8 moves upward. When plug block 8 no longer moves, release the two T-shaped rods 11. Under the elastic force of the second spring 14, the two T-shaped rods 11 move in opposite directions, and plug rod 13 automatically inserts into socket 5, completing the connection between plug block 8 and cylinder 1.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A quick-loading and unloading grounding rod for high-speed trains, characterized in that, It includes a connecting part and a plug-in part. The top surface of the plug-in part is fixedly connected to one end of the insulating rod, and the plug-in part can be inserted into the connecting part. The connecting part includes a cylinder (1), and slots (2) are opened on both the upper and lower sides of the cylinder (1). A connecting component is installed in the slot (2), and the plug-in part can be inserted into the slot (2). The connecting component is connected to the plug-in part.

2. The quick-loading and unloading grounding rod for high-speed trains according to claim 1, characterized in that, The connecting component includes a long strip (3), one end of which is fixedly installed on the inner wall of one end of the slot (2), the other end of which is located outside the cylinder (1), and inclined plates (4) are fixedly installed on both sides of the other end of the long strip (3), with a hole (5) opened on one side of the inclined plate (4).

3. The quick-loading and unloading grounding rod for high-speed trains according to claim 2, characterized in that, The slot (2) is provided with an annular block (6), and the long strip block (3) passes through the inner ring of the annular block (6). One end face of the annular block (6) is fixedly connected to the inner wall of one end of the slot (2) by several first springs (7).

4. The quick-loading and unloading grounding rod for high-speed trains according to claim 2, characterized in that, The plug-in part includes a cylindrical plug-in block (8), with a groove (9) on one end face of the plug-in block (8). The long strip block (3) and the inclined plate (4) can be inserted into the groove (9), and the plug-in block (8) can be inserted into the slot (2). A locking member is installed on the plug-in part, and the locking member can be locked to the inclined plate (4).

5. A quick-loading and unloading grounding rod for high-speed trains according to claim 4, characterized in that, The groove (9) has a square cross-section.

6. A quick-loading and unloading grounding rod for a high-speed train according to claim 4, characterized in that, The locking element includes: Two through holes (10) are provided on both sides of the plug block (8), and the through holes (10) are connected to the inside of the groove (9); Two T-shaped rods (11), the horizontal rods of the T-shaped rods (11) are slidably installed in the through hole (10), and the vertical rods of the T-shaped rods (11) are located outside the plug block (8); Two connecting rods (12), one side bottom of the connecting rod (12) is fixedly connected to one end face of the transverse rod of the T-shaped rod (11), and the connecting rod (12) is located in the groove (9); Two insertion rods (13) are provided. One end of each insertion rod (13) is fixedly installed on the top side of one side of the connecting rod (12). The insertion rod (13) can be inserted into the insertion hole (5).

7. A quick-loading and unloading grounding rod for a high-speed train according to claim 6, characterized in that, The vertical rod of the T-shaped rod (11) is fixedly connected to the outer peripheral surface of the plug block (8) by a second spring (14), and the horizontal rod of the T-shaped rod (11) passes through the second spring (14).

8. A quick-loading and unloading grounding rod for a high-speed train according to claim 7, characterized in that, The outer surface of the cylinder (1) and the outer surface of the plug block (8) are both covered with an insulating material layer.

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