A wall bushing

Abstract

The present invention relates to the technical field of wall bushings, and specifically to a wall bushing, which includes an insulating bushing, a mounting tube is fixedly installed on the periphery of the insulating bushing, and a plurality of mounting grooves arranged parallel to the axis of the mounting tube are provided at the middle position of the periphery of the mounting tube; a resistance mechanism is installed in the mounting groove, and the resistance mechanism includes a support assembly arranged in the mounting groove, and the support assembly is fixedly connected with the resistance assembly; an adjusting ring 2 and an adjusting ring 1 are installed on the periphery of the mounting tube, and a meshing tooth is provided on the periphery of the adjusting ring 1, and a plurality of placement grooves are also provided on the periphery of the mounting tube; a transmission assembly is provided in the placement groove. In the present invention, the installation between the bushing body and the side plate hole can be completed only by rotating the adjusting ring 2, which reduces the installation complexity and the labor cost; and the design of the vibration-damping elastic support structure of the support assembly in the resistance mechanism can absorb and disperse the vibration energy, thereby improving the safety and stability of the long-term use of the wall bushing.

Description

Technical Field

[0001] The invention relates to the technical field of wall bushings, in particular to a wall bushing. Background Art

[0002] The wall bushing is an accessory specially used in power systems. It is mainly used to guide the busbar through structures such as walls or cabinets. It can effectively protect the busbar passing through the wall and prevent it from being affected by the external environment, such as moisture, corrosion or mechanical damage, to ensure the reliability and durability of the busbar under various environmental conditions. At the same time, it makes the installation and maintenance of the busbar more convenient and simplifies the construction process.

[0003] Existing wall bushings usually include insulating bushings, which are usually made of high-strength insulating materials and are used to isolate the current from the external environment. The insulating bushings are provided with an inner core, which is used to help fix and support the conductive busbar to prevent it from moving or deforming. In addition, the bushings are provided with plugs or flanges to complete the connection between the bushing and the wall to ensure the safety of the live parts. The main working principle of the wall bushing is to isolate the conductive part from the outside world through insulating materials to ensure the safe transmission of current by the conductive busbar.

[0004] However, the existing wall bushings still have the following problems during use:

[0005] When installing the wall bushing, it is necessary to make a hole in the side of the cabinet, and then use bolts to cooperate with the flange on the bushing to install the bushing through the wall. This installation method is relatively cumbersome, with low disassembly and assembly efficiency, and it is inconvenient to replace the bushing later. In addition, this connection method makes the bushing and the cabinet in rigid contact. When the equipment inside the cabinet (such as motors, transformers, etc.) is running, if the load is unbalanced or the installation is improper, vibration is likely to occur, and mechanical vibration in the surrounding environment (such as heavy machinery operation, vehicle passing, etc.) will also cause vibration of the cabinet. At the same time, in high-voltage electrical equipment, electromagnetic force is generated when current passes through the conductor, which may cause vibration under certain conditions. The vibration of the cabinet may cause the connection parts (such as lap joints) to loosen, resulting in poor contact, increasing the resistance of the current path, and causing local overheating. Continuous vibration may cause wear and fatigue to the insulating material, thereby shortening the service life of the insulating material or reducing its insulation performance, and increasing the risk of insulation breakdown. If the vibration causes the wall bushing to deform or be damaged, short circuit, fire or other safety hazards may occur. Summary of the invention

[0006] The object of the present invention is to provide a wall bushing to solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A wall bushing, comprising an insulating bushing, wherein a mounting barrel is detachably fixedly mounted at the middle position of the outer periphery of the insulating bushing, wherein a plurality of mounting grooves arranged parallel to the axis of the mounting barrel are provided at the middle position of the outer periphery of the mounting barrel, and the plurality of mounting grooves are arranged in a circumferential array with respect to the axis of the mounting barrel, and a limiting block is fixedly mounted at the middle position of the top end between the inner sides of the two lengths of the mounting groove;

[0009] A resistance mechanism is installed in the installation groove, and the resistance mechanism includes a support component arranged in the installation groove, and the support component is fixedly connected to the resistance component after sliding through the limit block;

[0010] The outer periphery of the installation tube is provided with a thread near one end, and an adjusting ring 2 is installed on the outer periphery of the installation tube through the thread. An adjusting ring 1 is rotatably installed on the outer periphery of the installation tube, and a tooth is provided on the outer periphery of the adjusting ring 1. The adjusting ring 1 is located between the thread and the installation groove. The outer periphery of the installation tube is also provided with a plurality of placement grooves, and the number of the plurality of placement grooves is equal to the number of the plurality of installation grooves, and they are aligned one by one, and the placement grooves are located between the adjusting ring 1 and the end of the installation tube near the thread.

[0011] A transmission assembly is arranged in the placement groove, and the output end of the transmission assembly slides through one end of the placement groove close to the installation groove to the installation groove at the corresponding position, and the other end of the transmission assembly is in sliding contact with the second adjustment ring.

[0012] Further, the transmission assembly includes a connecting rod slidably installed in the placement groove, one end of the connecting rod close to the installation groove slides through the other end corresponding to the placement groove to the installation groove, and is fixedly connected to a lifting block slidably installed in the installation groove, the cross-section of the lifting block is a right triangle, the bottom surface of the lifting block is in sliding contact with the bottom surface of the installation groove, the two sides of the lifting block are in sliding contact with the two sides of the installation groove, and the top surface of the lifting block is an inclined surface;

[0013] The end of the connecting rod away from the lifting block is fixedly connected to a vertically arranged transmission rod, the top end of the transmission rod extends to the periphery of the placement groove, and the end of the transmission rod located outside the placement groove is in sliding contact with the side surface of the adjusting ring 2;

[0014] A spring three is fixedly connected between the transmission rod and one end of the placement groove close to the installation groove. Under the elastic force of the spring three, the transmission rod and the adjustment ring two are in elastic extrusion sliding contact.

[0015] Furthermore, the support assembly includes a hollow column that slides through the limit block, and the bottom of the hollow column is provided with a chamfer for use with the jacking block;

[0016] A push rod is slidably installed through the top of the hollow column, and one end of the push rod located inside the hollow column is fixedly connected to a slider that slides in contact with the inner wall of the hollow column, a damper is fixedly connected between the bottom surface of the slider and the inner bottom surface of the hollow column, and a spring four is fixedly connected between the bottom surface of the slider and the inner bottom surface of the hollow column and is sleeved on the periphery of the damper.

[0017] Furthermore, the resistance assembly includes a resistance plate arranged in parallel with the length direction of the installation slot, the center position of the bottom surface of the resistance plate is fixedly connected to the top end of the push rod, two springs sleeved on the periphery of the push rod are fixedly connected between the bottom surface of the resistance plate and the top surface of the limit block, and two guide rods are vertically fixedly connected to the bottom surface of the resistance plate, the guide rods are located on the side of the limit block away from the placement slot, and the bottom end of the guide rod slides through the limit block;

[0018] A second slide groove is provided on the top surface of the contact plate along the midline of its length, and two first slide grooves symmetrically arranged with respect to the second slide groove are provided on the top surface of the contact plate, a bidirectional screw rod is rotatably installed between the two ends of the second slide groove, and the end of the bidirectional screw rod close to the placement groove rotates through the contact plate to the outside of the second slide groove, and a gear used in conjunction with the first adjustment ring is fixedly installed;

[0019] Two clamping blocks symmetrically distributed about the middle position of the second slide groove are slidably installed on the top surface of the resistance plate, a clamping block 2 is fixedly connected to the middle position of the bottom surface of the clamping block, and clamping blocks 1 are fixedly connected to the two ends of the bottom surface of the clamping block, the clamping block 2 is slidably clamped in the second slide groove, and the clamping block 2 is threadedly connected to the bidirectional screw rod, and the two clamping blocks 1 are slidably clamped in the two slide grooves 1 respectively.

[0020] Furthermore, the thickness of the lifting block is greater than the height of the clamping block.

[0021] Furthermore, an inclined surface is arranged on the inner side surface of the clamping block at a position close to the top, and a second rubber pad is covered on the inner side surface of the clamping block.

[0022] Furthermore, a rubber pad 1 is fixedly installed at the middle position of the top surface of the resistance plate.

[0023] Furthermore, a plurality of evenly distributed handles 2 are fixedly mounted on the side of the adjusting ring 2 away from the mounting groove, and a plurality of evenly distributed handles 1 are fixedly mounted on the side of the adjusting ring 1 away from the mounting groove.

[0024] Furthermore, both ends of the installation tube are provided with a plurality of threaded holes distributed in a circumferential array, and a set of sealing components can be detachably and fixedly installed at both ends of the installation tube through the threaded holes.

[0025] Further, the sealing assembly includes a connecting ring, one side of the connecting ring is fixedly connected to a telescopic bellows, one end of the telescopic bellows away from the connecting ring is fixedly connected to a resistance ring, a sealing gasket is installed on the side of the resistance ring away from the telescopic bellows, a plurality of springs are fixedly connected between the outer edge of the connecting ring and the outer edge of the resistance ring, and the plurality of springs are distributed in a circumferential array about the axis of the connecting ring;

[0026] A plurality of fixing bolts used in conjunction with the threaded holes are slidably mounted on the side of the connecting ring, and the number of the fixing bolts is equal to the number of the threaded holes;

[0027] When the sealing assembly and the mounting tube are in a fixed connection state, the connecting ring is sleeved on the periphery of the insulating sleeve, and the connecting ring and the end of the mounting tube are fixed by a threaded connection between a fixing bolt and a threaded hole, and the telescopic bellows is sleeved on the periphery of the mounting tube. Under the elastic force of multiple springs, the sealing gasket is elastically squeezed and contacted with the side surface of the side plate.

[0028] Beneficial effects of the present invention:

[0029] 1. In the present invention, the installation between the sleeve body and the side plate hole can be completed only by rotating the adjusting ring 2 through the coordinated arrangement of the installation tube, the interference mechanism, the installation groove, the placement groove, the transmission assembly and the adjusting ring 2, thereby reducing the installation complexity and labor cost; and the design of the vibration-damping elastic support structure of the support assembly in the interference mechanism can absorb and disperse vibration energy, reduce the amplitude of the vibration generated by the cabinet during operation transmitted to the surrounding structure; it can prevent the relative movement between the insulating sleeve and the hole wall caused by vibration to a certain extent, thereby reducing friction and wear and maintaining the long-term stability of the interface; at the same time, the shock-absorbing elastic support can adapt to slight changes in the hole wall, such as temperature expansion, material contraction, etc. This adaptability ensures a firm installation and prevents dislocation and loosening caused by changes in the external environment, thereby significantly improving the safety and stability of the wall sleeve in long-term use.

[0030] 2. After the installation of the casing body, the installation tube is not completely in contact with the hole wall. The hollowing out can increase the distance of electrical insulation, especially in high voltage applications, which can effectively prevent leakage and short circuit. In addition, the hollowing out can reduce the concentration of electric field strength and avoid the formation of strong electric fields at the original contact point, which can reduce the risk of discharge and help maintain insulation performance.

[0031] 3. The provision of rubber pad 1 in the abutment assembly can further improve the buffering and vibration reduction capacity between the side plate and the insulating sleeve, while also preventing the wear and damage of the hole wall to the abutment plate during long-term use; in the clamping block, the provision of rubber pad 2 makes the two clamping blocks and the side plate have an interference fit, that is, the two sides of the side plate and the two clamping blocks are in elastic extrusion contact, so that the side plate and the insulating sleeve also have a buffering and vibration reduction effect of movement in the axial direction, further improving the stability of the present invention, and the provision of the inclined surface makes the two clamping blocks have an alignment and guiding function when they are clamped to the two sides of the side plate, which facilitates the centering installation of the sleeve body and improves the installation convenience of the sleeve body.

[0032] 4. The insulating sleeve and the mounting tube of the present invention are assembled structures. When the insulating sleeve is damaged, the mounting tube can be installed on a new insulating sleeve, so that the mounting tube can be reused to reduce the cost of use; and the diameter requirement for the insulating sleeve is not fixed, and the diameter of the insulating sleeve can be smaller than the diameter of the mounting tube. Therefore, within a certain range, the mounting tube can be used in conjunction with insulating sleeves of different diameters; at the same time, the size of the mounting hole on the side panel depends on the mounting tube, so there is no need to reopen the hole when replacing insulating sleeves of different diameters, thereby improving the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a three-dimensional schematic diagram of the connection relationship between the overall structure of the present invention and the side panels;

[0035] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0036] Figure 3 It is a three-dimensional schematic diagram of the installation position relationship between the installation tube and the insulating sleeve in the present invention;

[0037] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the mounting groove on the mounting cylinder of the present invention;

[0038] Figure 5 yes Figure 4 A magnified view of part A;

[0039] Figure 6 yes Figure 5 A magnified view of part D in the middle;

[0040] Figure 7 yes Figure 5 Enlarged view of part C;

[0041] Figure 8 It is a structural schematic diagram of the support assembly in the present invention;

[0042] Fig. 9 yes Figure 4 A three-dimensional schematic diagram from another angle;

[0043] Fig.10 yes Fig. 9 A magnified view of part B;

[0044] Fig.11 It is an enlarged view of the portion E in the installation cylinder 10;

[0045] Fig.12 It is a schematic diagram of the structure of the clamping block in the present invention;

[0046] The reference numerals are as follows:

[0047] 1-insulating sleeve, 2-sealing assembly, 3-side plate, 4-connecting ring, 5-fixing bolt, 6-spring 1, 7-telescopic bellows, 8-contact ring, 9-sealing washer, 10-mounting cylinder, 11-threaded hole, 12-mounting groove, 13-contact mechanism, 15-adjusting ring 2, 16-handle 2, 17-adjusting ring 1, 18-handle 1, 19-thread, 20-contact plate, 21-slide 1, 22-slide 2, 23 -Clamping block, 24-Rubber pad one, 25-Bidirectional screw, 26-Gear, 27-Placement slot, 28-Connecting rod, 29-Lifting block, 30-Card block one, 31-Card block two, 32-Hollow column, 33-Chamfer, 34-Limiting block, 35-Push rod, 36-Spring two, 37-Guide rod, 38-Transmission rod, 39-Spring three, 40-Damper, 41-Spring four, 42-Slider, 43-Inclined surface, 44-Rubber pad two. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Embodiment 1:

[0050] See also Figure 3 to Figure 6 and Figure 8 to Figure 11In an embodiment of the present invention, a wall bushing includes an insulating bushing 1, a mounting tube 10 is detachably fixedly installed at the middle position of the outer periphery of the insulating bushing 1, a plurality of mounting grooves 12 arranged parallel to the axis of the mounting tube 10 are opened at the middle position of the outer periphery of the mounting tube 10, and the plurality of mounting grooves 12 are arranged in a circumferential array with respect to the axis of the mounting tube 10, and a limiting block 34 is fixedly installed at the middle position of the top end between the inner side surfaces of the two lengths of the mounting groove 12;

[0051] The installation groove 12 is provided with a resistance mechanism 13, and the resistance mechanism 13 includes a support assembly arranged in the installation groove 12, and the support assembly is fixedly connected with the resistance assembly after sliding through the limit block 34;

[0052] The periphery of the mounting tube 10 is provided with a thread 19 near one end, and an adjusting ring 2 15 is installed on the periphery of the mounting tube 10 through the thread 19. An adjusting ring 17 is rotatably installed on the periphery of the mounting tube 10, and a tooth is provided on the periphery of the adjusting ring 17. The adjusting ring 17 is located between the thread 19 and the mounting groove 12. The periphery of the mounting tube 10 is also provided with a plurality of placement grooves 27, and the number of the plurality of placement grooves 27 is equal to the number of the plurality of mounting grooves 12, and they are aligned one by one, and the placement grooves 27 are located between the adjusting ring 17 and the end of the mounting tube 10 near the thread 19;

[0053] A transmission assembly is arranged in the placement groove 27 , and the output end of the transmission assembly slides through one end of the placement groove 27 close to the installation groove 12 to the installation groove 12 at the corresponding position, and the other end of the transmission assembly is in sliding contact with the adjustment ring 2 15 .

[0054] The transmission assembly includes a connecting rod 28 slidably mounted in the placement groove 27, and one end of the connecting rod 28 close to the installation groove 12 slides through the corresponding end of the placement groove 27 to the installation groove 12, and is fixedly connected to a lifting block 29 slidably mounted in the installation groove 12, the cross section of the lifting block 29 is a right triangle, the bottom surface of the lifting block 29 is in sliding contact with the bottom surface of the installation groove 12, the two sides of the lifting block 29 are in sliding contact with the two sides of the installation groove 12, and the top surface of the lifting block 29 is an inclined surface;

[0055] One end of the connecting rod 28 away from the lifting block 29 is fixedly connected to a vertically arranged transmission rod 38, the top end of the transmission rod 38 extends to the periphery of the placement groove 27, and the end of the transmission rod 38 located outside the placement groove 27 is in sliding contact with the side surface of the adjustment ring 2 15;

[0056] A spring three 39 is fixedly connected between the transmission rod 38 and one end of the placement groove 27 close to the installation groove 12. Under the elastic force of the spring three 39, the transmission rod 38 and the adjustment ring 2 15 are in elastic extrusion sliding contact.

[0057] The support assembly includes a hollow column 32 that slides through a limit block 34, and a chamfer 33 that cooperates with a lifting block 29 is provided at the bottom of the hollow column 32;

[0058] A push rod 35 is slidably installed through the top of the hollow column 32, and one end of the push rod 35 located inside the hollow column 32 is fixedly connected to a slider 42 that slides in contact with the inner wall of the hollow column 32, a damper 40 is fixedly connected between the bottom surface of the slider 42 and the inner bottom surface of the hollow column 32, and a spring 41 that is sleeved on the periphery of the damper 40 is fixedly connected between the bottom surface of the slider 42 and the inner bottom surface of the hollow column 32.

[0059] Among them, a plurality of evenly distributed second handles 16 are fixedly installed on the side of the adjustment ring 15 away from the installation groove 12, and a plurality of evenly distributed first handles 18 are fixedly installed on the side of the adjustment ring 17 away from the installation groove 12.

[0060] The wall bushing is an accessory specially used in the power system. It is mainly used to guide the busbar through the wall or cabinet and other structures. It can effectively protect the busbar passing through the wall and prevent it from being affected by the external environment. At the same time, it makes the installation and maintenance of the busbar more convenient and simplifies the construction process. The existing wall bushing usually includes an insulating bushing, which is usually made of high-strength insulating material and is used to isolate the current from the external environment. The insulating bushing is provided with an inner core inside, which is used to help fix and support the conductive busbar to prevent it from moving or deforming. The bushing is also provided with a plug or flange to complete the connection between the bushing and the wall to ensure the safety of the live part. The main working principle of the wall bushing is to isolate the conductive part from the outside world through insulating materials to ensure the safe transmission of current by the conductive busbar. However, when installing the existing wall-penetrating sleeve, it is necessary to drill a hole on the side of the cabinet, and then use bolts to cooperate with the flange on the sleeve to achieve the through-wall installation of the sleeve. This installation method is relatively cumbersome, with low disassembly and assembly efficiency, and is inconvenient for subsequent replacement of the sleeve. In addition, this connection method makes the sleeve and the cabinet in rigid contact, and the cabinet will vibrate due to various reasons, which has an adverse effect on the normal use of the sleeve.

[0061] When the wall bushing provided by the present invention is used:

[0062] In the initial state, the adjusting ring 2 15 is located on the periphery of the mounting tube 10 at one end away from the mounting groove 12. At this time, the bottom end of the support assembly is in contact with the bottom surface of the mounting groove 12, and the output end of the transmission assembly is not in contact with the support assembly. At this time, the radius of the sleeve body is the distance between the highest point of the interference assembly and the axis of the insulating sleeve 1, which is set to a.

[0063] The radius of the mounting hole opened on the side plate 3 needs to be equal to a, or greater than a, and the specific range is described below;

[0064] Specifically, when installing the sleeve body, the sleeve body is passed through the hole of the side plate 3 so that the multiple sets of interference components are aligned with the hole wall, and then the adjustment ring 15 is rotated by the handle 16 to move the adjustment ring 15 on the periphery of the installation tube 10 toward the direction close to the installation groove 12. During the process, the movement of the adjustment ring 15 drives the connecting rod 28 to slide and extend into the installation groove 12 through the transmission rod 38 in the transmission assembly, thereby driving the lifting block 29 to slide toward the direction close to the hollow column 32 in the support assembly. When the lifting block 29 contacts the hollow column 32, the front end of the inclined surface of the lifting block 29 first contacts the chamfer 33 at the bottom of the hollow column 32. As the lifting block 29 continues to move, the inclined surface of the lifting block 29 presses and lifts the bottom of the hollow column 32, so that the hollow column 32 slides away from the bottom surface of the installation groove 12 under the limiting action of the limiting block 34, so that the interference component at the front end of the push rod 35 is pressed and contacted with the hole wall. At this time, multiple groups of interference components are pressed and contacted with the hole wall, thereby completing the installation of the casing body;

[0065] In the installed state, the spring 41 and the damper 40 in the support assembly are both in a contracted state, thereby providing an elastic squeezing force between the resistance assembly and the control. At the same time, this arrangement forms an effective support and shock absorbing structure between the insulating sleeve 1 and the hole wall of the mounting hole;

[0066] Therefore, in the present invention, the installation between the sleeve body and the hole of the side plate 3 can be completed only by rotating the adjusting ring 2 15 through the coordinated arrangement of the installation tube 10, the interference mechanism 13, the installation groove 12, the placement groove 27, the transmission component and the adjustment ring 2 15, thereby reducing the installation complexity and labor cost; and the design of the vibration-damping elastic support structure of the support component in the interference mechanism 13 can absorb and disperse vibration energy, reduce the amplitude of the vibration generated by the cabinet during operation transmitted to the surrounding structure; it can prevent the relative movement between the insulating sleeve 1 and the hole wall caused by vibration to a certain extent, thereby reducing friction and wear and maintaining the long-term stability of the interface; at the same time, the shock-absorbing elastic support can adapt to slight changes in the hole wall, such as temperature expansion, material contraction, etc. This adaptability ensures a firm installation and prevents dislocation and loosening caused by changes in the external environment, thereby significantly improving the safety and stability of the wall sleeve in long-term use.

[0067] After the installation of the casing body, the installation tube 10 is not completely in contact with the hole wall, and the hollowing out can increase the distance of electrical insulation, especially in high voltage applications, which can effectively prevent leakage and short circuit. Moreover, the hollowing out can reduce the concentration of electric field strength and avoid the formation of a strong electric field at the original contact point, which can reduce the risk of discharge and help maintain insulation performance.

[0068] Embodiment 2:

[0069] See also Figure 3 to Figure 7 , Fig. 9 , Fig.10 and Fig.12 On the basis of Example 1, the resistance component includes a resistance plate 20 arranged parallel to the length direction of the installation groove 12, the center position of the bottom surface of the resistance plate 20 is fixedly connected to the top of the push rod 35, and a spring 2 36 arranged on the periphery of the push rod 35 is fixedly connected between the bottom surface of the resistance plate 20 and the top surface of the limit block 34, and two guide rods 37 are vertically fixedly connected to the bottom surface of the resistance plate 20, the guide rod 37 is located on the side of the limit block 34 away from the placement groove 27, and the bottom end of the guide rod 37 slides through the limit block 34; the setting of the guide rod 37 can guide and limit the movement of the resistance plate 20, avoid circumferential angle changes between the resistance plate 20 and the push rod 35, and improve the structural stability.

[0070] A second slide groove 22 is provided on the top surface of the contact plate 20 along the midline of its length, and two first slide grooves 21 are provided on the top surface of the contact plate 20 symmetrically arranged about the second slide groove 22. A bidirectional screw rod 25 is rotatably installed between the two ends of the second slide groove 22. One end of the bidirectional screw rod 25 close to the placement groove 27 rotates through the contact plate 20 to the outside of the second slide groove 22, and a gear 26 used in conjunction with the adjustment ring 17 is fixedly installed.

[0071] Two clamping blocks 23 symmetrically distributed about the middle position of the second slide groove 22 are slidably installed on the top surface of the resistance plate 20, a clamping block 21 is fixedly connected to the middle position of the bottom surface of the clamping block 23, and clamping blocks 1 30 are fixedly connected to the two ends of the bottom surface of the clamping block 23, the clamping block 21 slidably clamped in the second slide groove 22, and the clamping block 21 is threadedly connected to the bidirectional screw rod 25, and the two clamping blocks 1 30 are slidably clamped in the two slide grooves 21 respectively.

[0072] The thickness of the lifting block 29 is greater than the height of the clamping block 23 .

[0073] A rubber pad 24 is fixedly installed at the middle position of the top surface of the contact plate 20 .

[0074] A slope 43 is disposed on the inner side surface of the clamp block 23 near the top, and a rubber pad 2 44 is covered on the inner side surface of the clamp block 23 .

[0075] This embodiment provides a specific structure of the conflicting assembly in the conflicting mechanism 13; in the initial state, the gear 26 is in meshing state with the adjusting ring 17 through the meshing teeth on the outer periphery of the adjusting ring 17, and the elastic force of the spring 2 36 makes the gear 26 and the adjusting ring 17 in a relatively stable meshing state;

[0076] Before installing the sleeve body, the distance between the two clamping blocks 23 is adjusted according to the thickness of the side plate 3. Specifically, the handle 18 is used to rotate the adjusting ring 17, and the adjusting ring 17 drives the multiple gears 26 to rotate at the same time. The rotation of the gear 26 drives the bidirectional screw rod 25 to rotate. The rotation of the bidirectional screw rod 25 cooperates with the clamping block 2 31 to simultaneously drive the two clamping blocks 23 to slide closer or away from each other on the contact plate 20, thereby adjusting the distance between the two clamping blocks 23 so that the distance between the two clamping blocks 23 is adapted to the thickness of the side plate 3.

[0077] Then, the steps in Example 1 are performed again. Specifically, the rubber pad 24 is aligned with the hole wall. After the installation is completed, the rubber pad 24 is in squeeze contact with the hole wall, and the two clamping blocks 23 are respectively clamped on both sides of the side plate 3, thereby improving the installation stability of the sleeve body.

[0078] The provision of the rubber pad 24 can further improve the buffering and vibration reduction capability between the side plate 3 and the insulating sleeve 1, and can also prevent the hole wall from causing wear and damage to the contact plate 20 during long-term use;

[0079] In the clamping block 23, the rubber pad 44 is arranged so that the two clamping blocks 23 and the side plate 3 are in interference fit, that is, the two sides of the side plate 3 and the two clamping blocks 23 are in elastic extrusion contact, so that the side plate 3 and the insulating sleeve 1 also have a buffering and vibration reduction effect of movement in the axial direction, further improving the stability of the present invention. The inclined surface 43 is arranged so that the two clamping blocks 23 have an alignment and guiding function when they are clamped to the two sides of the side plate 3, which facilitates the central installation of the sleeve body and improves the installation convenience of the sleeve body.

[0080] The second spring 36 is in a stretched state. It should be noted that the restoring elastic force of the second spring 36 is greater than the static friction between the clamp block 23 and the side plate 3, thereby ensuring that when the sleeve body is disassembled, the second spring 36 can drive the resistance plate 20 to reset, so that the clamp block 23 is separated from the side plate 3.

[0081] The lifting height of the lifting block 29 should be greater than the height of the clamping block 23. Assuming the height of the clamping block 23 is b (b is less than c), the lifting height of the lifting block 29 is c, the retractable length of the ejector rod 35 is e (e is greater than c minus b), and the actual radius of the hole is d; then d needs to be greater than or equal to a, and d needs to be less than a plus c, so as to ensure that the contact plate 20 can be in extrusion contact with the hole wall;

[0082] Therefore, the actual opening size of the hole does not need to be a fixed value, so the requirement for opening accuracy is not high, thereby reducing the difficulty of the opening operation.

[0083] Embodiment 3:

[0084] See also Figure 1 to Figure 3On the basis of Example 1, a plurality of threaded holes 11 distributed in a circumferential array are provided at both ends of the installation tube 10, and a set of sealing components 2 can be detachably fixedly installed at both ends of the installation tube 10 through the threaded holes 11;

[0085] The sealing assembly 2 includes a connecting ring 4, one side of the connecting ring 4 is fixedly connected to a telescopic bellows 7, one end of the telescopic bellows 7 away from the connecting ring 4 is fixedly connected to a resistance ring 8, a sealing gasket 9 is installed on the side of the resistance ring 8 away from the telescopic bellows 7, and a plurality of springs 6 are fixedly connected between the outer edge of the connecting ring 4 and the outer edge of the resistance ring 8, and the plurality of springs 6 are distributed in a circumferential array about the axis of the connecting ring 4;

[0086] A plurality of fixing bolts 5 used in conjunction with the threaded holes 11 are slidably mounted through the side of the connecting ring 4, and the number of the fixing bolts 5 is equal to the number of the threaded holes 11;

[0087] When the sealing component 2 and the mounting tube 10 are in a fixed connection state, the connecting ring 4 is sleeved on the periphery of the insulating sleeve 1, and the connecting ring 4 and the end of the mounting tube 10 are fixed by a threaded connection between the fixing bolt 5 and the threaded hole 11. The telescopic bellows 7 is sleeved on the periphery of the mounting tube 10. Under the elastic force of multiple springs 6, the sealing gasket 9 and the side of the side plate 3 are elastically squeezed and contacted, thereby achieving a sealing effect on the hole, and the sealing component 2 and the side plate 3 are in elastic squeeze contact, which does not affect the vibration reduction effect while achieving the sealing effect.

[0088] Embodiment 4:

[0089] On the basis of Example 1, the installation tube 10 and the insulating sleeve 1 can be detachably fixedly connected by bolts. Specifically, a threaded hole is opened on the periphery of the installation tube 10, and the installation tube 10 is slidably sleeved in the middle position of the periphery of the insulating sleeve 1, and then the bolt is installed in the threaded hole so that the front end of the bolt is in contact with the periphery of the insulating sleeve 1, thereby completing the detachable fixed connection between the installation tube 10 and the insulating sleeve 1;

[0090] This arrangement enables the insulating sleeve 1 and the installation tube 10 to form an assembled structure. When the insulating sleeve 1 is damaged, the installation tube 10 can be installed on a new insulating sleeve 1, so that the installation tube 10 can be reused, thereby reducing the use cost.

[0091] Furthermore, the diameter requirement for the insulating sleeve 1 is not fixed, and the diameter of the insulating sleeve 1 can be smaller than the diameter of the mounting tube 10. Therefore, within a certain range, the mounting tube 10 can be used in conjunction with insulating sleeves 1 of different diameters. At the same time, the size of the mounting hole on the side panel 3 depends on the mounting tube 10. Therefore, when replacing insulating sleeves 1 of different diameters, there is no need to reopen the hole, thereby improving the practicality of the present invention.

[0092] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A wall bushing, comprising an insulating bushing (1), characterized in that: A mounting tube (10) is detachably fixedly mounted in the middle of the outer periphery of the insulating sleeve (1), a plurality of mounting grooves (12) arranged parallel to the axis of the mounting tube (10) are provided in the middle of the outer periphery of the mounting tube (10), and the plurality of mounting grooves (12) are arranged in a circumferential array about the axis of the mounting tube (10), and a limiting block (34) is fixedly mounted in the middle of the top end between the two inner side surfaces of the mounting groove (12); A resistance mechanism (13) is installed in the installation groove (12), and the resistance mechanism (13) comprises a support component arranged in the installation groove (12), and the support component is fixedly connected to the resistance component after sliding through the limit block (34); The outer periphery of the installation tube (10) is provided with a thread (19) near one end, and an adjusting ring 2 (15) is installed on the outer periphery of the installation tube (10) through the thread (19). An adjusting ring 1 (17) is rotatably installed on the outer periphery of the installation tube (10), and the outer periphery of the adjusting ring 1 (17) is provided with teeth. The adjusting ring 1 (17) is located between the thread (19) and the installation groove (12). The outer periphery of the installation tube (10) is also provided with a plurality of placement grooves (27). The number of the plurality of placement grooves (27) is equal to the number of the plurality of installation grooves (12), and they are aligned one by one. The placement grooves (27) are located between the adjusting ring 1 (17) and the end of the installation tube (10) near the thread (19). A transmission assembly is arranged in the placement groove (27), and an output end of the transmission assembly slides through one end of the placement groove (27) close to the installation groove (12) to the installation groove (12) at a corresponding position, and the other end of the transmission assembly is in sliding contact with the second adjustment ring (15).

2. A wall bushing according to claim 1, characterized in that: The transmission assembly comprises a connecting rod (28) slidably mounted in the placement groove (27), an end of the connecting rod (28) close to the installation groove (12) slides through an end corresponding to the placement groove (27) to the installation groove (12), and is fixedly connected to a lifting block (29) slidably mounted in the installation groove (12), the cross section of the lifting block (29) being a right triangle, the bottom surface of the lifting block (29) being in sliding contact with the bottom surface of the installation groove (12), the two sides of the lifting block (29) being in sliding contact with the two sides of the installation groove (12), and the top surface of the lifting block (29) being an inclined surface; One end of the connecting rod (28) away from the lifting block (29) is fixedly connected to a vertically arranged transmission rod (38), the top end of the transmission rod (38) extends to the periphery of the placement groove (27), and the end of the transmission rod (38) located outside the placement groove (27) is in sliding contact with the side surface of the second adjustment ring (15); A spring three (39) is fixedly connected between the transmission rod (38) and one end of the placement groove (27) close to the installation groove (12). Under the elastic force of the spring three (39), the transmission rod (38) and the adjustment ring two (15) are in elastic extrusion-type sliding contact.

3. A wall bushing according to claim 2, characterized in that: The support assembly comprises a hollow column (32) that slides through the limit block (34), and the bottom of the hollow column (32) is provided with a chamfer (33) that cooperates with the lifting block (29); A push rod (35) is slidably mounted through the top of the hollow column (32); one end of the push rod (35) located inside the hollow column (32) is fixedly connected to a slider (42) that is in sliding contact with the inner wall of the hollow column (32); a damper (40) is fixedly connected between the bottom surface of the slider (42) and the inner bottom surface of the hollow column (32); and a spring (41) that is sleeved on the outer periphery of the damper (40) is fixedly connected between the bottom surface of the slider (42) and the inner bottom surface of the hollow column (32).

4. A wall bushing according to claim 3, characterized in that: The abutment assembly comprises an abutment plate (20) arranged parallel to the length direction of the installation groove (12); the center position of the bottom surface of the abutment plate (20) is fixedly connected to the top end of the push rod (35); a second spring (36) sleeved on the periphery of the push rod (35) is fixedly connected between the bottom surface of the abutment plate (20) and the top surface of the limit block (34); and two guide rods (37) are vertically fixedly connected to the bottom surface of the abutment plate (20); the guide rods (37) are located on a side of the limit block (34) away from the placement groove (27), and the bottom end of the guide rod (37) slides through the limit block (34); A second slide groove (22) is provided on the top surface of the contact plate (20) along the midline of its length, and two first slide grooves (21) are provided on the top surface of the contact plate (20) and are symmetrically arranged with respect to the second slide groove (22). A bidirectional screw rod (25) is rotatably installed between the two ends of the second slide groove (22). The end of the bidirectional screw rod (25) close to the placement groove (27) rotates through the contact plate (20) to the outside of the second slide groove (22), and a gear (26) used in conjunction with the first adjustment ring (17) is fixedly installed. Two clamping blocks (23) symmetrically distributed about the middle position of the second slide groove (22) are slidably mounted on the top surface of the abutment plate (20); a second clamping block (31) is fixedly connected to the middle position of the bottom surface of the clamping block (23); and a first clamping block (30) is fixedly connected to both ends of the bottom surface of the clamping block (23); the second clamping block (31) is slidably clamped in the second slide groove (22); the second clamping block (31) is threadedly connected to the bidirectional screw rod (25); and the two first clamping blocks (30) are slidably clamped in the two first slide grooves (21) respectively.

5. A wall bushing according to claim 4, characterized in that: The thickness of the lifting block (29) is greater than the height of the clamping block (23).

6. A wall bushing according to claim 4, characterized in that: An inclined surface (43) is provided on the inner side surface of the clamping block (23) at a position close to the top, and a second rubber pad (44) is provided on the inner side surface of the clamping block (23).

7. A wall bushing according to claim 4, characterized in that: A rubber pad 1 (24) is fixedly mounted at the middle position of the top surface of the resistance plate (20).

8. The wall bushing according to claim 1, characterized in that: A plurality of evenly distributed second handles (16) are fixedly mounted on the side of the second adjustment ring (15) away from the mounting groove (12), and a plurality of evenly distributed first handles (18) are fixedly mounted on the side of the first adjustment ring (17) away from the mounting groove (12).

9. The wall bushing according to claim 1, characterized in that: Both ends of the installation tube (10) are provided with a plurality of threaded holes (11) distributed in a circumferential array, and a set of sealing components (2) can be detachably fixedly mounted on both ends of the installation tube (10) through the threaded holes (11).

10. A wall bushing according to claim 9, characterized in that: The sealing assembly (2) comprises a connecting ring (4), one side of the connecting ring (4) is fixedly connected to a telescopic bellows (7), one end of the telescopic bellows (7) away from the connecting ring (4) is fixedly connected to a resistance ring (8), a sealing gasket (9) is installed on the side of the resistance ring (8) away from the telescopic bellows (7), a plurality of springs (6) are fixedly connected between the outer edge of the connecting ring (4) and the outer edge of the resistance ring (8), and the plurality of springs (6) are distributed in a circumferential array about the axis of the connecting ring (4); A plurality of fixing bolts (5) used in conjunction with the threaded holes (11) are slidably mounted through the side of the connecting ring (4), and the number of the fixing bolts (5) is equal to the number of the threaded holes (11); When the sealing assembly (2) and the mounting tube (10) are in a fixed connection state, the connecting ring (4) is sleeved on the periphery of the insulating sleeve (1), and the connecting ring (4) and the end of the mounting tube (10) are fixed by a threaded connection between a fixing bolt (5) and a threaded hole (11), and the telescopic bellows (7) is sleeved on the periphery of the mounting tube (10), and under the elastic force of the plurality of springs (6), the sealing gasket (9) and the side surface of the side plate (3) are elastically squeezed and contacted.

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