Impact resistant shield

Abstract

The utility model provides an impact resistant shield. Relates to the technical field of shield. Including the shield body, the shield body is equipped in the outside of mounting column, the inside of shield body is equipped with a fixed sleeve, the outer wall between fixed sleeve and the inner wall of shield body is equipped with connecting rod, the bottom of fixed sleeve is equipped with mounting hole, the inner wall of mounting hole is one segment for internal thread part, the other segment is smooth part, first spring and movable plate are equipped in mounting hole, first spring extends in smooth part, the outer wall upper portion of mounting column is equipped with external thread part, the external thread part is rotatively equipped in internal thread part, the end of mounting column is equipped with the top rod, the top rod is used for pushing movable plate and compressing first spring. The utility model has the characteristics of high installation stability, strong impact resistance.

Description

Technical Field

[0001] This application relates to the field of shielding technology, specifically to an impact-resistant shielding cover. Background Technology

[0002] In high-voltage equipment, shielding can make the electric field distribution more uniform. For example, after adding a high-voltage equalizing shield to the top of the voltage divider, a more uniform electric field is established between the shield and the ground. Especially in the middle part where the resistor of the voltage divider is located, the equipotential surface is close to horizontal, the potential gradient is uniform, and the electric field lines are perpendicular to the equipotential surface and parallel to the axis of the resistor, thereby basically eliminating the uneven displacement current through the resistor.

[0003] Existing shielding covers are generally fixed with bolts. After long-term use, there is a risk that the bolts will fall off, which will reduce the reliability and stability of the shielding cover assembly. Moreover, when the shielding cover is subjected to external impact, the bolts are more likely to loosen, which can also cause the shielding cover to tilt or deform. Utility Model Content

[0004] In order to overcome the problems of poor impact resistance and insufficient stability of existing shielding covers, this application provides an impact-resistant shielding cover.

[0005] This application adopts the following technical solution: an impact-resistant shielding cover, including a shielding cover body, the shielding cover body being sleeved on the outside of a mounting post, a fixing sleeve being provided on the inner side of the shielding cover body, a connecting rod being provided between the outer wall of the fixing sleeve and the inner wall of the shielding cover body, a mounting hole being provided at the bottom of the fixing sleeve, a section of the inner wall of the mounting hole being an internally threaded part and another section being a smooth part, a first spring and a movable plate being provided in the mounting hole, the first spring extending in the smooth part;

[0006] The upper part of the outer wall of the mounting column is provided with an external thread, which is adapted to be screwed into the internal thread. The end of the mounting column is provided with a push rod, which is used to push the movable plate and compress the first spring.

[0007] Optionally, when the first part is in its naturally elongated state, the movable plate is located at the junction of the internal thread portion and the smooth portion, and the outer wall of the movable plate is separated from the inner wall of the smooth portion.

[0008] Optionally, when the external thread is fully screwed into the internal thread, the push rod is located inside the smooth part, and the first spring is in a compressed state.

[0009] Optionally, the bottom end face of the shield body is provided with a plurality of slots, and anti-collision strips are adaptedly inserted into the slots. The lower part of the anti-collision strip is locked in the slot, and the upper part of the anti-collision strip extends to the outside of the slot.

[0010] Optionally, the end of the anti-collision strip is provided with a receiving hole, and a second spring and a pull rod are provided in the receiving hole;

[0011] The bottom end face of the shielding cover body is detachably provided with a retaining ring, which is used to cover the end of the anti-collision strip.

[0012] Optionally, when the retaining ring is bolted to the shielding cover body, the pull rod is entirely located within the receiving hole and the second spring is in a compressed state.

[0013] Compared with the prior art, this application has the following beneficial effects;

[0014] 1. During the threaded connection between the mounting post and the fixing sleeve, the first spring will be compressed under the pushing action of the push rod. In this way, after the mounting post and the fixing sleeve are installed, the elastic force released by the first spring can improve the connection stability between the mounting post and the fixing sleeve, ensuring that the shielding cover body is in a reliable and stable state.

[0015] 2. Under the protection of the retaining ring, the anti-collision strip is in a state that cannot be removed, which can reliably achieve the anti-collision function and improve the impact resistance of the shielding cover. When the retaining ring is removed, the pull rod is automatically pushed out by the second spring. By pulling the pull rod, the anti-collision strip can be quickly disassembled, which improves the efficiency of replacement and maintenance. Attached Figure Description

[0016] Figure 1 This is a reference to the assembly state of this application. Figure 1 ;

[0017] Figure 2 This is a reference to the assembly state of this application. Figure 2 ;

[0018] Figure 3 This is a schematic perspective view of this application;

[0019] Figure 4 This is a reference diagram of the explosion state of this application;

[0020] Figure 5 This is a cross-sectional view of the internal structure of the crash barrier;

[0021] Figure 6 This is a reference diagram showing the exploded state of the fixing sleeve and the mounting post;

[0022] In the diagram: 1. Shielding cover body; 11. Slot; 12. Retaining ring; 13. Bolt; 2. Mounting post; 20. Top rod; 3. Fixing sleeve; 31. Connecting rod; 32. Mounting hole; 33. First spring; 34. Movable plate; 4. Anti-collision strip; 41. Accommodation hole; 42. Second spring; 43. Pull rod. Detailed Implementation

[0023] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] like Figure 1-6 As shown, an impact-resistant shielding cover includes a shielding cover body 1, which is sleeved on the outside of a mounting post 2. A fixing sleeve 3 is provided on the inner side of the shielding cover body 1. A connecting rod 31 is provided between the outer wall of the fixing sleeve 3 and the inner wall of the shielding cover body 1. A mounting hole 32 is provided at the bottom of the fixing sleeve 3. One part of the inner wall of the mounting hole 32 is an internal threaded part, and the other part is a smooth part. A first spring 33 and a movable plate 34 are provided in the mounting hole 32. The first spring 33 extends in the smooth part. An external threaded part is provided on the upper part of the outer wall of the mounting post 2. The external threaded part is adapted to be screwed into the internal threaded part. A push rod 20 is provided at the end of the mounting post 2. The push rod 20 is used to push the movable plate 34 and compress the first spring 33. When the external threaded part is fully screwed into the internal threaded part, the push rod 20 is located in the smooth part, and the first spring 33 is in a compressed state.

[0025] When installing the shielding cover body 1, the fixing sleeve 3 is placed on the mounting post 2, so that the mounting hole 32 aligns with the mounting post 2. At this time, rotating the shielding cover body 1 enables the threaded connection between the mounting post 2 and the fixing sleeve 3, that is, the internal thread and the external thread can be reliably connected. As the mounting post 2 is gradually screwed into the mounting hole 32, the push rod 20 contacts the movable plate 34 and pushes the movable plate 34 toward the bottom of the mounting hole 32, thereby gradually compressing the first spring 33. In this way, the reaction force of the first spring 33 applies axial pressure to the mounting post 2, preventing loosening between the mounting post 2 and the fixing sleeve 3, and improving the installation reliability of the shielding cover body 1.

[0026] When the first spring is in its naturally extended state, the movable plate 34 is located at the junction of the internal thread and the smooth part, and the outer wall of the movable plate 34 is separated from the inner wall of the smooth part. This ensures that the movable plate 34 can reliably move within the mounting hole 32 and compress the first spring 33.

[0027] The bottom end face of the shielding cover body 1 is provided with several slots 11. Anti-collision strips 4 are fitted into each slot 11, with the lower part of the anti-collision strip 4 engaged within the slot 11 and the upper part extending to the outside of the slot 11. The radial cross-section of the slot 11 is convex, ensuring that the anti-collision strip 4 can only be inserted into the slot 11 along its end and cannot be directly pulled out radially, thus improving the reliability of the anti-collision strip 4 installation. Since the upper part of the anti-collision strip 4 is located outside the slot 11, it will first contact the anti-collision strip 4 when impacted by debris, providing protection. By rationally setting the number of slots 11 and anti-collision strips 4, the impact resistance of the shielding cover body 1 can be maximized.

[0028] The anti-collision strip 4 has a receiving hole 41 at its end, and a second spring 42 and a pull rod 43 are provided in the receiving hole 41. A retaining ring 12 is detachably provided on the bottom end face of the shielding cover body 1, and the retaining ring 12 is used to cover the end of the anti-collision strip 4. When the retaining ring 12 is connected to the shielding cover body 1 by bolts 13, the pull rod 43 is completely located in the receiving hole 41 and the second spring 42 is in a compressed state. That is to say, when the retaining ring 12 is connected to the shielding cover body 1, the anti-collision strip 4 cannot be removed from the slot 11, and the pull rod 43 is also in a state where it cannot be pulled. When it is necessary to replace the anti-collision strip 4, first remove the bolts 13 and remove the retaining ring 12. At this time, under the action of the second spring 42, a part of the pull rod 43 will be pushed out to the outside of the receiving hole 41. When the lever 43 is partially exposed, it can be gripped and pulled to quickly remove the anti-collision strip 4 from the slot 11, facilitating the quick replacement of the anti-collision strip 4.

[0029] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. An impact-resistant shielding cover, comprising a shielding cover body (1), wherein the shielding cover body (1) is sleeved on the outside of a mounting post (2), characterized in that, The shield body (1) has a fixed sleeve (3) on its inner side. A connecting rod (31) is provided between the outer wall of the fixed sleeve (3) and the inner wall of the shield body (1). The bottom of the fixed sleeve (3) has an installation hole (32). One part of the inner wall of the installation hole (32) is an internal thread and the other part is a smooth part. A first spring (33) and a movable plate (34) are provided in the installation hole (32). The first spring (33) extends in the smooth part. The upper part of the outer wall of the mounting column (2) is provided with an external threaded part, which is adapted to be screwed into the internal threaded part. The end of the mounting column (2) is provided with a push rod (20), which is used to push the movable plate (34) and compress the first spring (33).

2. The impact-resistant shielding cover according to claim 1, characterized in that, When the first part is in its natural elongation state, the movable plate (34) is located at the junction of the internal thread and the smooth part, and the outer wall of the movable plate (34) is separated from the inner wall of the smooth part.

3. The impact-resistant shielding cover according to claim 2, characterized in that, When the external thread is fully screwed into the internal thread, the push rod (20) is located in the smooth part, and the first spring (33) is in a compressed state.

4. The impact-resistant shielding cover according to claim 2, characterized in that, The bottom end face of the shield body (1) is provided with a plurality of slots (11), and anti-collision strips (4) are adaptedly inserted into the slots (11). The lower part of the anti-collision strips (4) is locked in the slots (11), and the upper part of the anti-collision strips (4) extends to the outside of the slots (11).

5. The impact-resistant shielding cover according to claim 4, characterized in that, The end of the anti-collision strip (4) is provided with a receiving hole (41), and a second spring (42) and a pull rod (43) are provided in the receiving hole (41); The bottom end face of the shield body (1) is detachably provided with a retaining ring (12), which is used to cover the end of the anti-collision strip (4).

6. The impact-resistant shielding cover according to claim 5, characterized in that, When the retaining ring (12) is connected to the shield body (1) by bolts (13), the pull rod (43) is completely located in the receiving hole (41) and the second spring (42) is in a compressed state.

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