CN209210199U - Double drainage wire lifting tool - Google Patents

Abstract

The utility model relates to the technical field of power transformation construction and maintenance application, and is a double drainage wire hoisting tool, which includes a U-shaped boom connecting plate, an adjustable vertical fixing rod assembly, an n-shaped adjustable connecting rod assembly, an angle adjusting screw rod, Left cable clamp assembly and right cable clamp assembly. The utility model has a reasonable and compact structure and is easy to use. On the one hand, the height of the utility model can be adjusted conveniently by adjusting the length of the vertical support rod set in the vertical sleeve; The fixed ears are set separately, and the fixed ears are fixed by bolts and nuts, which can realize the function of quick disassembly and assembly of wires, so as to effectively solve the problem of inconvenient installation and easy damage of substation drainage wires. It has the characteristics of safety, labor saving, simplicity and high efficiency .

Description

Double drainage wire lifting tool

technical field

The utility model relates to the technical field of electric power substation construction and maintenance application, and is a double-drainage wire hoisting tool.

Background technique

At present, in the process of drainage construction, maintenance and installation in high-voltage power substations, due to the heavy weight of the wire itself, the accuracy of the installation hole position is high. In the installation process of using the boom, problems such as excessive movement range or low reliability of wire fixing often occur.

However, the existing hoisting tools are inconvenient to adjust the height of the hoisting tool according to the needs of use, and the wires are easily damaged when hoisting the wires, the distance between the wires is inconvenient to adjust, and the installation of the substation drainage wires is inconvenient.

Contents of the invention

The utility model provides a double-drainage wire hoisting tool, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problems that the height of the existing hoisting tool is difficult to adjust, and the hoisting of the drainage wire is inconvenient and easily damaged when the substation drainage wire is installed. .

The technical scheme of the utility model is achieved through the following measures: a double drainage wire hoisting tool, including a U-shaped boom connecting plate with the opening facing upwards, an adjustable vertical fixing rod assembly, an n-shaped adjustable connecting rod assembly, an angle The adjusting screw, the left cable hoop assembly and the right cable hoop assembly, the top of the adjustable vertical fixed rod assembly and the lower middle part of the U-shaped boom connecting plate are fixedly installed together, and the upper middle part of the n-shaped adjustable connecting rod assembly is connected to the adjustable vertical The lower part of the fixed rod assembly is fixedly installed together, the angle adjustment screw rod is fixedly installed on the upper part of the rear side of the n-shaped adjustable connecting rod assembly, and the left cable hoop assembly and the right cable hoop assembly are hinged on the lower part of the n-shaped adjustable connecting rod assembly.

Below is the further optimization or/and improvement to above-mentioned utility model technical scheme:

The left side of the U-shaped boom connecting plate is provided with at least two connecting jacks, and the right side of the U-shaped boom connecting plate is provided with connecting jacks corresponding to the left side of the U-shaped boom connecting plate.

The above-mentioned adjustable vertical fixing rod assembly includes a vertical sleeve, a vertical support rod and an adjustment bolt. The vertical support rod is set on the inner lower part of the vertical sleeve, and the bottom of the vertical support rod is fixedly installed with a connecting nut. There are at least two internally threaded holes in sequence, and at least two internally threaded holes corresponding to the vertical support rods are arranged in the lower part of the right side of the vertical sleeve from top to bottom. An internally threaded hole on the right side of the vertical sleeve is equipped with an adjustment bolt.

The above-mentioned n-shaped adjustable connecting rod assembly includes a horizontal fixing frame, a left longitudinal connecting rod, a right longitudinal connecting rod, a left adjusting hoop, a right adjusting hoop, connecting bolts and fixing bolts. The upper parts of the left longitudinal connecting rod and the right longitudinal connecting rod are respectively provided with Screw threads, the middle of the left adjusting hoop and the right adjusting hoop are respectively provided with threaded holes that match the upper parts of the left longitudinal connecting rod and the upper part of the right longitudinal connecting rod. The upper part of the right longitudinal connecting rod and the right adjusting hoop are fixed and installed on the right end of the horizontal fixing frame through fixing bolts. In the middle of the horizontal fixing frame, there is a positioning hole which is the same as the inner thread of the connecting nut at the bottom of the vertical support. The positioning hole of the horizontal fixing frame is connected with the vertical support. The connecting nuts at the bottom of the rod are fixed and installed together by connecting bolts, the bottom of the left longitudinal connecting rod is hinged with the front upper part of the left cable hoop assembly, the bottom of the right longitudinal connecting rod is hinged with the front upper part of the right cable hoop assembly, and the rear upper part of the left longitudinal connecting rod and the upper part of the rear side of the right longitudinal connecting rod are respectively fixedly installed with a connecting frame, and the rear end of the connecting frame is provided with a threaded hole matching with the longitudinal thread on the outer side of the angle adjusting screw, and the upper part of the angle adjusting screw is fixedly installed with the rear end of the connecting frame, and the angle adjustment The bottom of the screw rod is respectively hinged with the rear upper parts of the left and right cable hoop assemblies, and outer ring platforms are respectively arranged at the left and right ends of the horizontal fixing frame.

The above-mentioned right clamping hoop assembly includes the right clamping hoop, the silicone spacer, the connecting shaft, and the air-permeable cushion net. At least two connecting shafts are fixedly installed on the right side of the middle of the clamping hoop, and fixed ears are arranged on the left side of the middle of the right clamping hoop, and the fixing ears are fixed by bolts and nuts. Hinged; the left clamping hoop assembly includes the left clamping hoop, silicone cushion block, connecting shaft, and breathable cushion net. The silicone cushion block is glued to the inner wall of the left clamping hoop, and the breathable cushion net is glued to the inner side of the silicone cushion block. There are at least two connecting shafts fixedly installed on the left side of the middle of the left clamping hoop, and fixed ears are arranged on the right side of the middle of the left clamping hoop, and the fixing ears are fixed by bolts and nuts. Bottom hinged.

The utility model has a reasonable and compact structure and is easy to use. On the one hand, the height of the utility model can be adjusted conveniently by adjusting the length of the vertical support rod set in the vertical sleeve; The fixed ears are set separately, and the fixed ears are fixed by bolts and nuts, which can realize the function of quick disassembly and assembly of wires, so as to effectively solve the problem of inconvenient installation and easy damage of substation drainage wires. It has the characteristics of safety, labor saving, simplicity and high efficiency .

Description of drawings

Accompanying drawing 1 is the front view structure schematic diagram of the utility model.

Accompanying drawing 2 is the side view structure diagram of the utility model.

Accompanying drawing 3 is a front structural schematic diagram of the adjustable vertical fixing rod assembly in accompanying drawing 1.

Accompanying drawing 4 is a front structural schematic diagram of the n-shaped adjustable connecting rod assembly in accompanying drawing 1.

Accompanying drawing 5 is a front structural schematic view of the right clamp assembly in accompanying drawing 1.

The codes in the drawings are: 1 is the U-shaped boom connecting plate, 2 is the connecting jack, 3 is the adjustable vertical fixed rod assembly, 4 is the n-shaped adjustable connecting rod assembly, 5 is the connecting bolt, and 6 is the angle Adjusting screw, 7 is the connecting frame, 8 is the right cable hoop assembly, 9 is the left cable hoop assembly, 31 is the vertical sleeve, 32 is the vertical pole, 33 is the connecting nut, 34 is the adjusting bolt, 35 is the internal thread Holes, 41 is a horizontal fixing frame, 42 is a positioning hole, 43 is a longitudinal connecting rod, 44 is an adjusting hoop, 45 is a fixing bolt, 46 is an outer ring platform, 81 is a clamping hoop, 82 is a fixed ear, and 83 is a connecting shaft , 84 is a silica gel block, and 85 is a breathable pad net.

Detailed ways

The utility model is not limited by the following examples, and the specific implementation manner can be determined according to the technical scheme of the utility model and actual conditions.

In this utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout method of Fig. The relationship is determined according to the layout direction of Figure 1 of the specification.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in Figure 1, the double drainage wire hoisting tool includes a U-shaped boom connecting plate 1 with the opening facing upward, an adjustable vertical fixed rod assembly 3, an n-shaped adjustable connecting rod assembly 4, an angle adjustment screw rod 6, a left clamp The wire hoop assembly 9 and the right clamp wire hoop assembly 8, the top of the adjustable vertical fixed rod assembly 3 and the middle lower part of the U-shaped boom connecting plate 1 are fixedly installed together, and the upper middle part of the n-shaped adjustable connecting rod assembly 4 is connected to the adjustable vertical The lower part of the fixed rod assembly 3 is fixedly installed together, the angle adjustment screw rod 6 is fixedly installed on the upper part of the rear side of the n-shaped adjustable connecting rod assembly 4, and the left clamping hoop assembly 9 and the right clamping hoop assembly 8 are hinged on the n-shaped adjustable connecting rod Assembly 4 lower part. During the use of the utility model, the height of the utility model can be adjusted conveniently by quickly adjusting the height of the adjustable vertical fixed rod assembly 3, thereby reducing the damage caused when the wire is hoisted; the left wire clamp assembly 9 and the right clamp assembly 8 are hinged on the bottom of the n-shaped adjustable connecting rod assembly 4. When the wire is hoisted, it is beneficial to realize the function of quickly disassembling the wire, thereby effectively solving the problem of inconvenient installation of the substation drainage wire.

According to actual needs, the above-mentioned double drainage wire lifting tool can be further optimized or/and improved:

As shown in Figure 1, at least two connecting jacks 2 are provided on the left side of the U-shaped boom connecting plate 1, and the right side of the U-shaped boom connecting plate 1 is provided with a connection corresponding to the left side of the U-shaped boom connecting plate 1. Jack 2.

As shown in accompanying drawings 1 and 3, the adjustable vertical fixing rod assembly 3 includes a vertical sleeve 31, a vertical strut 32 and an adjustment bolt 34, the vertical strut 32 is set on the inner lower part of the vertical sleeve 31, and the bottom of the vertical strut 32 A connecting nut 33 is fixedly installed, the right side of the vertical pole 32 is provided with at least two internally threaded holes 35 from top to bottom, and the lower part of the right side of the vertical sleeve 31 is provided with at least two vertical poles 32 from top to bottom. Corresponding to the internally threaded hole 35 , an adjusting bolt 34 is installed on an internally threaded hole 35 on the right side of the vertical casing 31 . The connecting nut 33 at the bottom of the vertical pole 32 is convenient to fix the adjustable vertical fixed rod assembly 3 with the n-shaped adjustable connecting rod assembly 4 by bolts, so that when the wire is hoisted, the adjustable vertical fixed rod assembly 3 and the connection with the adjustable vertical fixed rod assembly can be improved. The stability of the n-shaped adjustable connecting rod assembly 4 increases the safety factor; during the use of the utility model, the height of the adjustable vertical fixed rod assembly 3 can be quickly adjusted by changing the position of the adjusting bolt 34 from top to bottom , save working time, and make it convenient and labor-saving to install at the same time.

As shown in accompanying drawings 1, 2, 3, and 4, the n-shaped adjustable connecting rod assembly 4 includes a transverse fixing frame 41, a left longitudinal connecting rod 43, a right longitudinal connecting rod 43, a left adjusting hoop 44, a right adjusting hoop 44, a connecting Bolt 5 and fixing bolt 45, left longitudinal connecting rod 43 and right longitudinal connecting rod 43 tops are respectively provided with threads, and left adjusting hoop 44 and right adjusting hoop 44 middle are respectively provided with left longitudinal connecting rod 43 and right longitudinal connecting rod 43 tops. Threaded hole, the left longitudinal connecting rod 43 top and the left adjusting hoop 44 are fixedly installed on the left end of the horizontal fixing frame 41 through the fixing bolt 45, and the right longitudinal connecting rod 43 upper part and the right adjusting hoop 44 are fixed and installed on the horizontal fixing frame 41 through the fixing bolt 45. The right end of frame 41 is provided with the same positioning hole 42 as the inner thread of the connecting nut 33 at the bottom of the vertical support rod 32 in the middle of the horizontal fixing frame 41, and the positioning hole 42 of the horizontal fixing frame 41 and the connecting nut 33 at the bottom of the vertical supporting rod 32 are connected by connecting bolts. 5 are fixedly installed together, the bottom of the left longitudinal connecting rod 43 is hinged with the front upper part of the left clamp assembly 9, the bottom of the right longitudinal connecting rod 43 is hinged with the front upper part of the right clamp assembly 8, the rear upper part of the left longitudinal connecting rod 43 and the right The upper part of the rear side of the longitudinal connecting rod 43 is respectively fixedly equipped with a connecting frame 7, and the rear end of the connecting frame 7 is provided with a threaded hole cooperating with the longitudinal thread on the outside of the angle adjusting screw rod 6, and the upper part of the angle adjusting screw rod 6 and the connecting frame 7 rear end are fixedly installed on the Together, the bottom of the angle adjusting screw 6 is respectively hinged with the rear upper parts of the left clamp assembly 9 and the right clamp assembly 8, and outer ring platforms 46 are respectively arranged at the left and right ends of the transverse fixing frame 41 . The left longitudinal connecting rod 43 and the right longitudinal connecting rod 43 are respectively fixedly installed on the left and right ends of the horizontal fixing frame 41 through the left adjusting hoop 44 and the right adjusting hoop 44. When using the utility model, it is convenient to quickly adjust according to the required situation of the work site. The distance between the right wire clamp assembly 8 and the left wire clamp assembly 9 facilitates the adjustment of the distance between the wires; the rear side of the n-shaped adjustable connecting rod assembly 4 is equipped with an angle adjustment screw 6, and is connected with the left wire clamp respectively. The hoop assembly 9 and the right wire hoop assembly 8 are hinged, which is convenient for quickly adjusting the inclination angle of the wire hoop assembly according to the required usage of the on-site drainage wire, so that the installation of the drainage wire is more labor-saving and safe; the left and right ends of the horizontal fixing frame 41 are respectively The outer ring platform 46 provided, when adjusting the distance between the right cable hoop assembly 8 and the left cable hoop assembly 9, the left longitudinal connecting rod 43 and the right longitudinal connecting rod 43 will not break away from the horizontal fixing frame 41, increasing the work Safety factor.

As shown in accompanying drawings 1, 2, and 5, the right clamping hoop assembly 8 includes a right clamping hoop 81, a silicone spacer 84, a connecting shaft 83, and a breathable cushion net 85, and the silica gel spacer 84 is glued to the right clamping hoop 81. On the inner wall of the inner wall, the breathable cushion net 85 is glued to the inner side of the silica gel cushion block 84, and the middle right part of the right clamping hoop 81 is fixedly equipped with a connecting shaft 83, and the middle left part of the right clamping hoop 81 is provided with a fixed ear 82. The ear 82 is fixed by bolts and nuts, the upper rear part of the outer side of the right clamping hoop 81 is hinged with the bottom of the angle adjustment screw 6, and the left clamping hoop assembly 9 includes a left clamping hoop 81, a silicone spacer 84, a connecting shaft 83, and a breathable gasket 85, the silica gel spacer 84 is glued on the inner wall of the left clamping hoop 81, the breathable cushion net 85 is glued on the inner side of the silica gel spacer 84, and the middle left part of the left clamping hoop 81 is fixedly equipped with a connecting shaft 83, and the left clamping The right part in the middle of the tight hoop 81 is provided with a fixed ear 82, the fixed ear 82 is fixed by a bolt and a nut, and the upper rear part of the left clamp hoop 81 outside is hinged with the bottom of the angle adjustment screw rod 6 . On the inwall of the left clamping hoop 81, install silica gel spacer 84 glue, and the inboard of air-permeable spacer net 85 is glued on silica gel spacer 84, when can realize hoisting drainage wire, can play a protective role to drainage wire, reduce the impact on The damage of the drainage wire prolongs the service life of the drainage wire and saves production costs; the connecting shaft 83 fixedly installed on the right side of the middle of the left clamping hoop 81 and the right clamping hoop 81 facilitates the opening of the fixing ear 82, and the clamping hoop 81 can maximize The angle is expanded, and the drainage wire can be quickly loaded. At the same time, the fixing ear 82 is fixed by bolts and nuts. In the left clamping hoop 81 and the right clamping hoop 81, the bolts and nuts of the fixing ear 82 can be fixedly installed, which is conducive to realizing the function of quickly disassembling and assembling the wires, thereby effectively solving the inconvenient installation of the substation drainage wires The problem.

The above technical features constitute the best embodiment of the utility model, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations.

Claims (8)

1. A double drainage wire hoisting tool, characterized in that it comprises a U-shaped boom connecting plate with an opening facing up, an adjustable vertical fixed rod assembly, an n-shaped adjustable connecting rod assembly, an angle adjustment screw, a left clamping hoop assembly and The right clamp assembly, the top of the adjustable vertical fixed rod assembly is fixedly installed together with the lower middle part of the U-shaped boom connecting plate, the upper middle part of the n-shaped adjustable connecting rod assembly is fixedly installed together with the lower part of the adjustable vertical fixed rod assembly, The angle adjustment screw rod is fixedly installed on the upper part of the rear side of the n-shaped adjustable connecting rod assembly, and the left cable hoop assembly and the right cable hoop assembly are hinged on the lower part of the n-shaped adjustable connecting rod assembly. 2. The double drainage wire lifting tool according to claim 1, characterized in that at least two connection jacks are arranged on the left side of the U-shaped boom connecting plate, and the U-shaped boom connecting plate is provided with a U-shaped boom connecting hole on the right side. Corresponding connection jacks on the left side of the connection board. 3. The double drainage wire lifting tool according to claim 1 or 2, characterized in that the adjustable vertical fixing rod assembly includes a vertical sleeve, a vertical support rod and an adjusting bolt, and the vertical support rod is set on the inner lower part of the vertical sleeve, The bottom of the vertical support rod is fixedly installed with connecting nuts, the right side of the vertical support rod is provided with at least two internal threaded holes from top to bottom, and the lower part of the right side of the vertical sleeve is provided with at least two holes corresponding to the vertical support rod from top to bottom. An internally threaded hole on the right side of the vertical casing is provided with an adjusting bolt. 4. The double drainage wire lifting tool according to claim 1 or 2, characterized in that the n-shaped adjustable connecting rod assembly includes a horizontal fixing frame, a left longitudinal connecting rod, a right longitudinal connecting rod, a left adjusting hoop, a right adjusting hoop, Connecting bolts and fixing bolts, the upper parts of the left longitudinal connecting rod and the right longitudinal connecting rod are respectively provided with threads, and the middle of the left adjusting hoop and the right adjusting hoop are respectively provided with threaded holes matching the upper parts of the left longitudinal connecting rod and the right longitudinal connecting rod. The upper part of the longitudinal connecting rod and the left adjusting hoop are fixed and installed on the left end of the horizontal fixing frame through fixing bolts, the upper part of the right longitudinal connecting rod and the right adjusting hoop are fixed and installed on the right end of the horizontal fixing frame through fixing bolts, and there is a vertical support rod in the middle of the horizontal fixing frame The positioning hole with the same inner thread of the bottom connecting nut, the positioning hole of the horizontal fixing frame and the connecting nut at the bottom of the vertical support rod are fixed and installed together by connecting bolts, the bottom of the left longitudinal connecting rod is hinged with the front upper part of the left cable hoop assembly, and the right longitudinal connection The bottom of the rod is hinged with the front upper part of the right cable hoop assembly, and the upper rear side of the left longitudinal connecting rod and the upper rear side of the right longitudinal connecting rod are respectively fixedly equipped with a connecting frame, and the rear ends of the connecting frame are provided with the longitudinal threads on the outside of the angle adjustment screw. The threaded hole, the upper part of the angle adjustment screw and the rear end of the connecting frame are fixedly installed together, the bottom of the angle adjustment screw is respectively hinged with the rear upper parts of the left cable hoop assembly and the right cable hoop assembly, and the left and right ends of the horizontal fixing frame are provided with outer Ring Taiwan. 5. The double drainage wire lifting tool according to claim 3, characterized in that the n-shaped adjustable connecting rod assembly includes a horizontal fixing frame, a left longitudinal connecting rod, a right longitudinal connecting rod, a left adjusting hoop, a right adjusting hoop, and connecting bolts and fixing bolts, the upper parts of the left longitudinal connecting rod and the right longitudinal connecting rod are respectively provided with threads, the middle of the left adjusting hoop and the right adjusting hoop are respectively provided with threaded holes matching the upper parts of the left longitudinal connecting rod and the right longitudinal connecting rod, and the left longitudinal connecting rod The upper part of the rod and the left adjusting hoop are fixed and installed on the left end of the horizontal fixing frame through fixing bolts, the upper part of the right longitudinal connecting rod and the right adjusting hoop are fixed and installed on the right end of the horizontal fixing frame through fixing bolts. The positioning hole with the same inner thread of the nut, the positioning hole of the horizontal fixing frame and the connecting nut at the bottom of the vertical support rod are fixed and installed together by connecting bolts, the bottom of the left longitudinal connecting rod is hinged with the front upper part of the left cable hoop assembly, and the bottom of the right longitudinal connecting rod It is hinged with the front upper part of the right cable hoop assembly, and the upper rear side of the left longitudinal connecting rod and the upper rear side of the right longitudinal connecting rod are respectively fixed with connecting frames, and the rear ends of the connecting frames are provided with threaded holes that cooperate with the outer longitudinal threads of the angle adjustment screw , the upper part of the angle adjustment screw is fixedly installed with the rear end of the connecting frame, the bottom of the angle adjustment screw is respectively hinged with the rear upper parts of the left clamp assembly and the right clamp assembly, and outer ring platforms are respectively arranged at the left and right ends of the horizontal fixing frame . 6. The double drainage wire lifting tool according to claim 1, 2 or 5, characterized in that the right clamping hoop assembly includes a right clamping hoop, a silicone spacer, a connecting shaft, a breathable gasket, and the silica gel spacer is glued to the On the inner wall of the right clamping hoop, the breathable cushion net is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the right side of the middle of the right clamping hoop, and the fixed ear is arranged on the left side of the middle of the right clamping hoop, and the fixed ear passes through the Bolts and nuts are fixed, the outer upper rear part of the right clamping hoop is hinged with the bottom of the angle adjustment screw, and the left clamping hoop assembly includes the left clamping hoop, silicone spacer, connecting shaft, breathable gasket, and the silicone spacer is glued to the left clamp. On the inner wall of the clamping hoop, the air-permeable gasket is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the left side of the middle of the left clamping hoop, and the middle and right side of the left clamping hoop is provided with a fixed ear, which is passed through the bolt and The nut is fixed, and the upper rear part outside the left clamping hoop is hinged with the bottom of the angle adjusting screw rod. 7. The double-drainage wire lifting tool according to claim 3, wherein the right clamping hoop assembly includes a right clamping hoop, a silicone spacer, a connecting shaft, and a breathable cushion net, and the silicone spacer is glued to the right clamping hoop On the inner wall of the inner wall, the air cushion net is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the right side of the middle of the right clamping hoop, and the fixed ear is set on the left side of the middle of the right clamping hoop, and the fixing ear is fixed by bolts and nuts , the outer upper rear part of the right clamping hoop is hinged with the bottom of the angle adjustment screw, the left clamping hoop assembly includes the left clamping hoop, silicone spacer, connecting shaft, breathable cushion net, and the silicone spacer is glued to the inner wall of the left clamping hoop On the upper part, the air-permeable cushion net is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the left side of the middle of the left clamping hoop, and the middle and right side of the left clamping hoop is provided with a fixed ear, which is fixed by bolts and nuts. The outer upper rear part of the clamping hoop is hinged with the bottom of the angle adjustment screw rod. 8. The double drainage wire lifting tool according to claim 4, characterized in that the right clamping hoop assembly includes a right clamping hoop, a silicone pad, a connecting shaft, and a breathable cushion net, and the silicone pad is glued to the right clamping hoop On the inner wall of the inner wall, the air cushion net is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the right side of the middle of the right clamping hoop, and the fixed ear is set on the left side of the middle of the right clamping hoop, and the fixing ear is fixed by bolts and nuts , the outer upper rear part of the right clamping hoop is hinged with the bottom of the angle adjustment screw, the left clamping hoop assembly includes the left clamping hoop, silicone spacer, connecting shaft, breathable cushion net, and the silicone spacer is glued to the inner wall of the left clamping hoop On the upper part, the air-permeable cushion net is glued to the inner side of the silicone pad, the connecting shaft is fixedly installed on the left side of the middle of the left clamping hoop, and the middle and right side of the left clamping hoop is provided with a fixed ear, which is fixed by bolts and nuts. The outer upper rear part of the clamping hoop is hinged with the bottom of the angle adjustment screw rod.