Live working shield

Abstract

The application provides a live working shielding insulation frame, and belongs to the technical field of insulation tools, which comprises an insulation rod assembly and an insulation baffle. The insulation rod assembly comprises a hook, a first rod body, a second rod body and a negative pressure pipe. The first rod body is internally provided with a sliding cavity. The upper part of the second rod body is slidably arranged in the sliding cavity and has a negative pressure space between the bottom wall of the sliding cavity. One end of the negative pressure pipe is fixedly arranged on the first rod body and communicates with the negative pressure space, and the other end is provided with a one-way valve. The insulation baffle is provided with a sleeve hole and is sleeved on the upper part of the second rod body through the sleeve hole, and the insulation baffle comprises two first split parts which are arranged in two parts and divide the sleeve hole along a vertical plane. The live working shielding insulation frame can avoid the inconvenience of carrying a large-volume support for connecting the insulation baffle on a telegraph pole.

Description

Technical Field

[0001] This invention belongs to the field of insulating tools and equipment technology, and more specifically, relates to a live-line working shielding insulating frame. Background Technology

[0002] In live-line work on power distribution networks, the use of insulating tools is of paramount importance to the safety of workers.

[0003] For example, during live-line work, it is necessary to hang insulating rod assemblies on crossarms, fix brackets on utility poles, and connect insulating baffles to the brackets. However, the brackets fixed to the utility poles for connecting the insulating baffles are quite bulky and inconvenient to carry. Summary of the Invention

[0004] The purpose of this invention is to provide a protective insulating frame for live-line work, which aims to solve the problem that the brackets fixed on utility poles for connecting insulating baffles are bulky and inconvenient to carry.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is to provide a live-line working shielding insulation frame, including an insulating rod assembly and an insulating baffle.

[0006] The insulating rod assembly includes a hook for hanging on a crossarm, a first rod body fixedly connected to the hook, a second rod body parallel to the first rod body, and a negative pressure tube.

[0007] The first rod is vertically arranged, and a sliding cavity is provided inside the first rod. The sliding cavity slides downward through the first rod.

[0008] The upper part of the second rod is circumferentially contracted inward relative to the middle part of the second rod, and the upper part of the second rod slides through the sliding cavity and has a negative pressure space between it and the bottom wall of the sliding cavity.

[0009] One end of the negative pressure pipe is fixed to the first rod and communicates with the negative pressure space, while the other end is equipped with a one-way valve.

[0010] An insulating baffle is provided with a sleeve hole and is fitted onto the upper part of the second rod body through the sleeve hole, so that the insulating baffle is clamped between the middle parts of the first rod body and the second rod body. The insulating baffle includes two separate first parts, which divide the sleeve hole equally along the vertical plane.

[0011] In one possible implementation, the live-line working shielding insulation frame further includes a connecting ring and two connecting rods.

[0012] The connecting ring is slidably sleeved on the middle part of the second rod.

[0013] Two connecting rods are symmetrically arranged on both sides of the vertical plane. One end of the connecting rod is hinged to the connecting ring, and the other end is hinged to the first split part on the same side. The hinge axes at both ends of the connecting rod are parallel and horizontal.

[0014] In one possible implementation, the insulating rod assembly further includes a sealing ring and an insulating barrel.

[0015] The sealing ring is fitted and fixed onto the negative pressure pipe.

[0016] The open end of the insulating barrel is fitted onto the sealing ring to accommodate the one-way valve.

[0017] In one possible implementation, the negative pressure tube is horizontally positioned, and the insulating rod assembly further includes a limiting shaft and a sliding plate.

[0018] The limiting shaft is parallel to the negative pressure tube and is located on the same side of the first rod. One end of the limiting shaft is fixedly connected to the first rod, and the side wall of the other end has an outwardly protruding anti-detachment part.

[0019] The sliding plate is perpendicular to the limiting shaft and is slidably sleeved on the limiting shaft. The sliding plate is fixedly connected to the insulating barrel.

[0020] In one possible implementation, the insulating rod assembly further includes a support, a sliding ring, and a vertical pole.

[0021] The support is located below the limiting shaft and connected to the middle of the second rod.

[0022] The sliding ring is slidably sleeved on the limiting shaft and located between the anti-detachment part and the sliding plate.

[0023] One end of the upright is fixedly connected to the sliding ring.

[0024] When the middle part of the second rod moves away from the first rod to a preset position, the sliding ring can cause the other end of the upright to abut against the upper surface of the support.

[0025] In one possible implementation, the support member is located below the insulating baffle, and a vertically arranged positioning shaft is fixed on the lower surface of the first split part, the positioning shaft slidingly penetrating the support member.

[0026] In one possible implementation, the sleeve hole is located at one end of the insulating baffle, the second rod body has an axial structure and the middle side wall has two outwardly protruding limiting parts, the two limiting parts are arranged at intervals in the vertical direction, the support member has an annular structure and is rotatably sleeved on the second rod body, the support member is located between the two limiting parts.

[0027] In one possible implementation, the live-line work shielding insulation frame also includes an insulating blanket.

[0028] An insulating blanket is attached and fixed to the upper surface of the insulating baffle. The insulating blanket has a connecting hole and is sleeved on the first rod body through the connecting hole. The insulating baffle includes two separate second parts, which divide the connecting hole equally along the vertical plane.

[0029] In one possible implementation, the insulating rod assembly further includes a sliding plug.

[0030] The sliding plug is slidably inserted into the negative pressure space, and the circumferential direction of the sliding plug is sealed and fitted with the side wall of the negative pressure space. The sliding plug is fixed to the top surface of the second rod.

[0031] In one possible implementation, the middle portion of the sliding plug has a storage cavity for storing gas.

[0032] In this embodiment, the one-way valve is used to connect to the vacuum pumping device. The vacuum pumping device draws air from the negative pressure space through the one-way valve and the negative pressure pipe, thereby creating a negative pressure in the negative pressure space.

[0033] The insulating rod assembly is hung on the crossarm via a hook. The second rod is slid downwards, and then the two first separate parts are combined to form an insulating baffle, which is then fitted onto the upper part of the second rod through a sleeve hole. The second rod is then released, and under the negative pressure within the negative pressure space, the second rod slides upwards, with the insulating baffle clamped between the middle of the first and second rods.

[0034] Since there is no need to use a bracket for connecting the insulating baffle, the problem of the large size and inconvenience of carrying the bracket that is fixed to the utility pole for connecting the insulating baffle can be avoided. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the live-line working shielding insulation frame provided in an embodiment of the present invention;

[0037] Figure 2 for Figure 1 A magnified structural diagram of part A in the diagram;

[0038] Figure 3 for Figure 1 A magnified structural diagram of part B in the diagram;

[0039] Figure 4 This is a three-dimensional cross-sectional view of the shielding insulation frame for live-line work provided in an embodiment of the present invention;

[0040] Figure 5 for Figure 4 A magnified structural diagram of a portion of C in the diagram;

[0041] Figure 6 for Figure 4 A magnified schematic diagram of a local D section;

[0042] Figure 7 for Figure 4 A magnified structural diagram of local E in the image;

[0043] Figure 8 This is a three-dimensional structural diagram of the live-line working shielding insulation frame after the power-off insulation rod assembly is provided in an embodiment of the present invention;

[0044] Figure 9 for Figure 8 A magnified structural diagram of a local F in the image;

[0045] Figure 10 This is an isometric structural diagram of the first rod in the live-line working shielding insulation frame provided in an embodiment of the present invention.

[0046] In the picture:

[0047] 11. Hook; 12. First rod; 121. Sliding cavity; 122. Negative pressure space; 13. Second rod; 131. Limiting part; 14. Negative pressure pipe; 15. One-way valve; 16. Sealing ring; 18. Insulating bucket; 19. Limiting shaft; 191. Anti-detachment part; 20. Sliding plate; 210. Support; 220. Sliding ring; 230. Upright rod; 240. Sliding plug; 2401. Storage cavity;

[0048] 2. Insulating baffle; 21. Sleeve hole; 22. First split part; 221. Positioning shaft;

[0049] 3. Connecting ring;

[0050] 4. Connecting rod;

[0051] 5. Insulating blanket; 51. Connecting hole; 52. Second split part. Detailed Implementation

[0052] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0054] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0055] The terms “length,” “width,” “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0057] Please refer to the following: Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 9 and Figure 10 The present invention will now describe the live-line working shielding and insulating frame provided by the present invention. The live-line working shielding and insulating frame includes an insulating rod assembly and an insulating baffle 2.

[0058] The insulating rod assembly includes a hook 11 for hanging on a crossarm, a first rod 12 fixedly connected to the hook 11, a second rod 13 parallel to the first rod 12, and a negative pressure pipe 14.

[0059] The first rod 12 is vertically arranged, and a sliding cavity 121 is provided inside the first rod 12. The sliding cavity 121 slides downward through the first rod 12.

[0060] The upper part of the second rod 13 is circumferentially contracted inward relative to the middle part of the second rod 13, and the upper part of the second rod 13 slides through the sliding cavity 121 and has a negative pressure space 122 between it and the bottom wall of the sliding cavity 121.

[0061] One end of the negative pressure pipe 14 is fixed to the first rod 12 and communicates with the negative pressure space 122, and the other end is provided with a one-way valve 15.

[0062] The insulating baffle 2 is provided with a sleeve hole 21 and is sleeved on the upper part of the second rod 13 through the sleeve hole 21 so that the insulating baffle 2 is clamped between the middle of the first rod 12 and the second rod 13. The insulating baffle 2 includes two separate first split parts 22, and the two first split parts 22 are evenly divided along the vertical plane by the sleeve hole 21.

[0063] Compared with the prior art, the live-line working shielding insulation frame provided by the present invention uses a one-way valve 15 to connect a vacuum pumping device. The vacuum pumping device extracts air from the negative pressure space 122 through the one-way valve 15 and the negative pressure pipe 14, so that a negative pressure is formed in the negative pressure space 122.

[0064] The insulating rod assembly is hung on the crossarm via hook 11. The second rod 13 is slid downwards, and then the two first split parts 22 are combined to form an insulating baffle 2, which is then fitted onto the upper part of the second rod 13 through the sleeve hole 21. The second rod 13 is then released, and under the negative pressure within the negative pressure space 122, the second rod 13 slides upwards, with the insulating baffle 2 clamped between the middle of the first rod 12 and the second rod 13.

[0065] Since there is no need to use a bracket for connecting the insulating baffle 2, the problem of the bracket for connecting the insulating baffle 2, which is fixed on the utility pole, being large and inconvenient to carry can be avoided.

[0066] In some embodiments, see Figure 1 , Figure 7 and Figure 8 The live-line working shielding insulation frame also includes a connecting ring 3 and two connecting rods 4.

[0067] The connecting ring 3 is slidably sleeved on the middle part of the second rod 13.

[0068] Two connecting rods 4 are symmetrically arranged on both sides of a vertical plane. One end of the connecting rod 4 is hinged to the connecting ring 3, and the other end is hinged to the first split part 22 on the same side. The hinge axes at both ends of the connecting rod 4 are parallel and horizontal.

[0069] The connecting ring 3 is connected to the first split part 22 via the connecting rod 4, thus forming a whole for easy storage. The connecting ring 3 can prevent the first split part 22 from sliding out horizontally between the middle of the second rod 13 and the first rod 12 via the connecting rod 4.

[0070] After the insulating frame is used, slide the second rod 13 downwards, causing the two second split parts 52 to rotate out from between the upper part of the second rod 13 and the first rod 12. Then, drive the connecting ring 3 downwards to slide away from the second rod 13. Finally, rotate the two connecting rods 4 and the two second split parts 52 so that the two second split parts 52 rotate to the outside of the two connecting rods 4 and are in a parallel state, which facilitates storage.

[0071] In some embodiments, the above-described feature insulating rod assembly may employ, as follows: Figure 2 and Figure 5 The structure shown. See also Figure 2 and Figure 5 The insulating rod assembly also includes a sealing ring 16 and an insulating barrel 18.

[0072] The sealing ring 16 is fitted and fixed onto the negative pressure pipe 14.

[0073] The open end of the insulating barrel 18 is fitted onto the sealing ring 16 to accommodate the one-way valve 15.

[0074] The one-way valve 15 is generally made of metal. The insulating barrel 18, the negative pressure pipe 14 and the sealing ring 16 form an insulating space, which can isolate the one-way valve 15.

[0075] When the one-way valve 15 is needed, the insulating barrel 18 slides to expose the one-way valve 15.

[0076] In some embodiments, see Figure 2 and Figure 5 The negative pressure pipe 14 is set horizontally, and the insulating rod assembly also includes a limiting shaft 19 and a sliding plate 20.

[0077] The limiting shaft 19 is parallel to the negative pressure tube 14 and is located on the same side of the first rod 12. One end of the limiting shaft 19 is fixedly connected to the first rod 12, and the side wall of the other end has an outwardly protruding anti-detachment part 191.

[0078] The sliding plate 20 is perpendicular to the limiting shaft 19 and is slidably sleeved on the limiting shaft 19. The sliding plate 20 is fixedly connected to the insulating barrel 18.

[0079] When it is necessary to extract air from the negative pressure space 122 through the one-way valve 15, the drive sliding plate 20 is brought close to the anti-detachment part 191, thereby causing the insulating barrel 18 to disengage from the sealing ring 16 and causing the one-way valve 15 to be exposed from inside the insulating barrel 18.

[0080] The insulating bucket 18 can be hung on the first rod 12 by the cooperation of the limiting shaft 19 and the sliding plate 20.

[0081] The anti-detachment part 191 can prevent the sliding plate 20 from sliding off the limiting shaft 19.

[0082] In some embodiments, the above-described feature insulating rod assembly may employ, as follows: Figure 1 , Figure 3 , Figure 4 and Figure 6 The structure shown. See also Figure 1 , Figure 3 , Figure 4 and Figure 6 The insulating rod assembly also includes a support 210, a sliding ring 220, and a vertical rod 230.

[0083] The support member 210 is located below the limiting shaft 19 and is connected to the middle of the second rod 13.

[0084] The sliding ring 220 is slidably sleeved on the limiting shaft 19 and located between the anti-detachment part 191 and the sliding plate 20.

[0085] One end of the upright 230 is fixedly connected to the sliding ring 220.

[0086] When the middle part of the second rod 13 moves away from the first rod 12 to a preset position, the sliding ring 220 can make the other end of the upright 230 abut against the upper surface of the support member 210.

[0087] When it is necessary to put the insulating baffle 2 on the upper part of the second rod 13, first drive the second rod 13 to slide downward, that is, make the middle part of the second rod 13 move away from the first rod 12. When the middle part of the second rod 13 moves away from the first rod 12 to the preset position, drive the sliding ring 220 to slide, so that the other end of the upright 230 abuts against the upper surface of the support 210. This can restrict the second rod 13 from sliding upward. At this time, the operator can free up his hands to put the insulating baffle 2 on the upper part of the second rod 13.

[0088] Then the sliding ring 220 is driven to slide, causing the upright 230 to disengage from the support member 210. Subsequently, the second rod 13 slides upward, and the middle part of the second rod 13 cooperates with the first rod 12 to clamp the insulating baffle 2.

[0089] In some embodiments, see Figure 1 and Figure 3 The support member 210 is located below the insulating baffle 2. The lower surface of the first split part 22 is fixed with a vertically arranged positioning shaft 221, which slides through the support member 210.

[0090] When the insulating baffle 2 is placed on the upper part of the second rod 13, the positioning shaft 221 slides through the support member 210, thereby preventing the first split part 22 from falling out from between the middle of the second rod 13 and the first rod 12 under the action of gravity. This frees up the operator's hands to drive the sliding ring 220 to slide.

[0091] In some embodiments, see Figure 3 and Figure 6 The sleeve hole 21 is located at one end of the insulating baffle 2. The second rod body 13 has an axial structure and two outwardly protruding limiting parts 131 on the side wall in the middle. The two limiting parts 131 are arranged at intervals in the vertical direction. The support member 210 has a ring structure and is rotatably sleeved on the second rod body 13. The support member 210 is located between the two limiting parts 131.

[0092] The support member 210 can rotate with the insulating baffle 2, so that the insulating baffle 2 can be rotated to a suitable angle according to the position between the operator and the live part.

[0093] When driving the insulating baffle 2 to rotate, if the position to be reached by the insulating baffle 2 interferes with the upright 230, the sliding ring 220 can be driven to rotate, so that the insulating baffle 2 supports the end of the upright 230 away from the sliding ring 220.

[0094] In some embodiments, see Figure 1 , Figure 4 and Figure 8 The live-line work shielding insulation frame also includes an insulating blanket 5.

[0095] The insulating blanket 5 is attached and fixed to the upper surface of the insulating baffle 2. The insulating blanket 5 is provided with a connecting hole 51 and is sleeved on the first rod body 12 through the connecting hole 51. The insulating baffle 2 includes two separate second parts 52, which are evenly distributed along the vertical plane to divide the connecting hole 51.

[0096] The double insulation provided by the insulating blanket 5 and the insulating baffle 2 can better protect the workers.

[0097] In some embodiments, the above-described feature insulating rod assembly may employ, as follows: Figure 5 The structure shown. See also Figure 5 The insulating rod assembly also includes a sliding plug 240.

[0098] The sliding plug 240 is slidably inserted into the negative pressure space 122. The sliding plug 240 is circumferentially sealed and fitted with the side wall of the negative pressure space 122. The sliding plug 240 is fixed on the top surface of the second rod 13.

[0099] The sliding plug 240 ensures a seal between the upper part of the second rod 13 and the sliding cavity 121.

[0100] In some embodiments, the aforementioned feature sliding plug 240 may be adopted as follows: Figure 5 The structure shown. See also Figure 5 The middle part of the sliding plug 240 has a storage cavity 2401 for storing gas.

[0101] The higher the negative pressure value within the negative pressure space 122, the more effort it takes for the operator to pull the second rod 13. When the negative pressure value within the negative pressure space 122 exceeds a certain value, the operator may be unable to pull the second rod 13. At this point, the top wall of the storage cavity 2401 ruptures, and the gas inside the storage cavity 2401 escapes, slightly reducing the negative pressure value within the negative pressure space 122, thus allowing the operator to pull the second rod 13. Gas extraction from the negative pressure space 122 can continue until the top wall of the storage cavity 2401 ruptures.

[0102] Furthermore, the sidewall thickness of the storage cavity 2401 is greater than the top wall thickness of the storage cavity 2401, so that when the top wall of the storage cavity 2401 breaks, the sidewall of the storage cavity 2401 can be prevented from breaking.

[0103] In this invention, all components except the one-way valve 15 are made of insulating material.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shielding and insulating frame for live-line working, characterized in that, include: An insulating rod assembly includes a hook for hanging on a crossarm, a first rod body fixedly connected to the hook, a second rod body parallel to the first rod body, and a negative pressure tube. The first rod body is vertically arranged and has a sliding cavity inside. The sliding cavity slides downward through the first rod body. The upper part of the second rod body is circumferentially contracted inward relative to the middle part of the second rod body. The upper part of the second rod body slides through the sliding cavity and has a negative pressure space between it and the bottom wall of the sliding cavity. One end of the negative pressure tube is fixed to the first rod body and communicates with the negative pressure space, and the other end is provided with a one-way valve. An insulating baffle is provided with a sleeve hole and is fitted onto the upper part of the second rod body through the sleeve hole so that the insulating baffle is clamped between the middle parts of the first rod body and the second rod body. The insulating baffle includes two separate first parts, which divide the sleeve hole equally along a vertical plane.

2. The live-line working shielding and insulating frame as described in claim 1, characterized in that, Also includes: A connecting ring is slidably fitted onto the middle part of the second rod; Two connecting rods are symmetrically arranged on both sides of the vertical plane. One end of the connecting rod is hinged to the connecting ring, and the other end is hinged to the first split part on the same side. The hinge axes at both ends of the connecting rod are parallel and horizontal.

3. The live-line working shielding and insulating frame as described in claim 1, characterized in that, The insulating rod assembly also includes: A sealing ring is fitted and fixed onto the negative pressure pipe; An insulating barrel, with its open end fitted onto the sealing ring, is used to accommodate the one-way valve.

4. The live-line working shielding and insulating frame as described in claim 3, characterized in that, The negative pressure pipe is horizontally positioned, and the insulating rod assembly further includes: The limiting shaft is parallel to the negative pressure tube and located on the same side of the first rod body. One end of the limiting shaft is fixedly connected to the first rod body, and the side wall of the other end has an outwardly protruding anti-detachment part. A sliding plate is perpendicular to the limiting shaft and slidably sleeved on the limiting shaft, and the sliding plate is fixedly connected to the insulating barrel.

5. The live-line working shielding and insulating frame as described in claim 4, characterized in that, The insulating rod assembly also includes: A support member is located below the limiting shaft and connected to the middle of the second rod. A sliding ring is slidably sleeved on the limiting shaft and located between the anti-detachment part and the sliding plate; One end of the upright is fixedly connected to the sliding ring; When the middle part of the second rod moves away from the first rod to a preset position, the sliding ring can cause the other end of the upright to abut against the upper surface of the support.

6. The live-line working shielding insulation frame as described in claim 5, characterized in that, The support member is located below the insulating baffle, and a vertically arranged positioning shaft is fixed on the lower surface of the first split part, the positioning shaft slidingly penetrating the support member.

7. The live-line working shielding and insulating frame as described in claim 6, characterized in that, The sleeve hole is located at one end of the insulating baffle. The second rod body has an axial structure and two outwardly protruding limiting parts on the side wall in the middle. The two limiting parts are spaced apart in the vertical direction. The support member has a ring structure and is rotatably sleeved on the second rod body. The support member is located between the two limiting parts.

8. The live-line working shielding and insulating frame as described in claim 1, characterized in that, Also includes: An insulating blanket is attached and fixed to the upper surface of the insulating baffle. The insulating blanket has a connecting hole and is sleeved on the first rod body through the connecting hole. The insulating baffle includes two separate second parts, which divide the connecting hole equally along the vertical plane.

9. The live-line working shielding and insulating frame as described in claim 1, characterized in that, The insulating rod assembly also includes: A sliding plug is slidably inserted into the negative pressure space. The sliding plug is circumferentially sealed and fitted to the side wall of the negative pressure space. The sliding plug is fixed to the top surface of the second rod.

10. The live-line working shielding insulation frame as described in claim 9, characterized in that, The sliding plug has a storage cavity in the middle for storing gas.

Images