Water conservancy pipeline supporting structure

Abstract

The invention provides a water conservancy pipeline supporting structure, and belongs to the technical field of pipeline supporting, according to the water conservancy pipeline supporting structure, a clamping assembly comprises an expansion cylinder, a piston is arranged in the expansion cylinder, a threaded rod is arranged on the piston, and the side, located on the piston, of the interior of the expansion cylinder is filled with an expansion material; a reset spring is arranged on the other side of the piston in the expansion cylinder, a one-way valve is arranged on the hose, and balls are arranged on the clamping ring. If the terrain changes, only the clamping ring needs to be rotated to change the angle, through the arrangement of the balls, the pipeline can rotate automatically and move, the reset spring avoids loosening of the supporting structure caused by long-time shaking, air injection ventilation is conducted on the thread through shaking of the pipeline, the thread is prevented from rusting, and the service life of the pipeline is prolonged. When the temperature rises, the pipeline is prevented from being extruded to deform or damaged due to the fact that the size is increased through thermal expansion, and when the temperature drops, a gap is prevented from being generated between the clamping ring and the pipeline, and the firmness of the pipeline is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline support, and in particular relates to a water conservancy pipeline supporting structure. Background Art

[0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and promoting benefits. They are also called water projects. Water is an indispensable and precious resource for human production and life, but its natural state does not fully meet human needs. Only by building water conservancy projects can we control water flow, prevent floods and waterlogging disasters, and regulate and distribute water to meet the needs of people's lives and production for water resources. Water conservancy projects need to build dams, dikes, spillways, sluices, water inlets, channels, ferries, rafts, fishways, tunnels, riverbanks or bridges and other different types of water conservancy engineering buildings to achieve their goals; in the process of water conservancy construction, it is generally necessary to install pipelines on water conservancy engineering buildings for water conservancy construction. During the installation of pipelines, it is necessary to install support structures on water conservancy engineering buildings in advance to enhance the firmness of the pipelines and the installation effect of the pipelines through the support structures.

[0003] At present, during the installation of water conservancy pipelines, as the terrain changes, the rotation angle of the pipeline cannot be fixed, and its use is limited; when the pipelines are spliced ​​together, the pipelines need to be rotated to connect the ends of the pipelines to complete the splicing work. In addition, since the pipelines are relatively heavy, it is difficult to move the pipelines, which reduces work efficiency. When water flows through the pipelines, sometimes the water volume is too large and sometimes too small. Vibrations are generated with the size of the water flow, and the acceleration of the water flow will cause the pipeline to shake. In addition, as the environment changes, moisture is prone to occur, causing rust on the threads of the bolts, making it inconvenient to disassemble or maintain. Due to the temperature difference in the weather, the pipelines are generally exposed to the outside. As the weather temperature changes, the pipelines expand and contract. When the temperature rises, the clamps and the pipelines themselves generate extrusion pressure, which causes certain damage to the pipelines. When the temperature drops, the extrusion pressure of the clamps on the pipelines gradually decreases, and there is a gap between the clamps and the pipelines, which is prone to loosening and other problems. Summary of the invention

[0004] (I) The purpose of the present invention is to provide a water conservancy pipeline support structure, which aims to solve the problem in the prior art that, during the installation process of the water conservancy pipeline, as the terrain changes, the pipeline cannot be rotated and fixed at a fixed angle, which limits its use; when the pipelines are spliced ​​together, the pipelines need to be rotated themselves so that the ends of the pipelines are connected to each other in order to complete the splicing work, and because the pipelines are relatively heavy, it is more laborious to move the pipelines, which reduces work efficiency; when water flows through the pipeline, sometimes the water volume is too large, and sometimes the water volume is too small, and vibrations are generated with the size of the water flow, and the acceleration of the water flow will cause the pipeline to shake; and as the environment changes, moisture is prone to occur, causing rust on the threads of the bolts, which is not convenient for disassembly or maintenance; due to the temperature difference in the weather, the pipelines are generally exposed to the outside, and as the temperature changes, the pipelines expand and contract with heat, and when the temperature rises, the clamps and the pipelines themselves generate extrusion force, which causes certain damage to the pipelines, and when the temperature drops, the extrusion force of the clamps on the pipelines gradually decreases, and there is a gap between the clamps and the pipelines, which is prone to loosening and other problems.

[0005] (II) To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A water conservancy pipeline support structure comprises a fixing frame and a clamping ring, wherein the clamping ring is arranged on the fixing frame, the fixing frame is in a "U" shape, and a clamping assembly is arranged on the fixing frame; The clamping assembly includes an expansion cylinder, a piston is arranged in the expansion cylinder, a threaded rod is arranged on the piston, the threaded rod is threadedly connected to the fixing frame, the interior of the expansion cylinder located on one side of the piston is filled with expansion material, hoses are arranged on both sides of the threaded rod on the expansion cylinder, the ends of the hoses extend to the interior of the fixing frame, a return spring is arranged on the other side of the piston in the expansion cylinder, a flange bearing is arranged at the bottom of the expansion cylinder, an air hole is arranged on the surface of the expansion cylinder near the flange bearing, the flange bearing is connected to the clamping ring, a one-way valve is arranged on the hose; and a ball is arranged on the clamping ring.

[0006] Preferably, a fastening bolt is threadedly connected to the threaded rod, a sealing gasket is provided between the fastening bolt and the fixing frame, the sealing gasket is sleeved on the threaded rod, and the sealing gasket blocks gas leakage; a gap is left between the threaded rod and the expansion tube.

[0007] Preferably, guide rods are fixedly connected to the left and right sides of the fixing frame close to the threaded rod, and a limit block is fixedly connected to the expansion cylinder. The guide rods pass through the interior of the limit block, and the guide rods are used to increase the stability of the expansion cylinder.

[0008] Preferably, a rotating ring is fixedly connected to the top end of the threaded rod, and the rotating ring is used to drive the threaded rod to rotate.

[0009] Preferably, there are two clamping rings, and the two clamping rings are symmetrically spliced, and a docking assembly is fixedly connected to the splicing point of the two clamping rings.

[0010] Preferably, the docking assembly includes two fixing handles, one of which is fixedly connected with a plug post, and the other fixing handle is provided with a through hole, and the two clamping rings are close to each other to drive the plug post to be inserted into the through hole.

[0011] Preferably, a mounting plate is fixedly connected to the fixing frame, a mounting hole is provided on the mounting plate, and plate ribs are provided at the connection between the fixing frame and the mounting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. When installing the pipeline, the present invention needs to insert the pipeline into two clamping rings. By setting the flange bearing, the angle of the clamping ring can be changed so that the clamping ring rotates around the axis of the expansion tube. If the terrain changes, it is only necessary to rotate the clamping ring to change the angle; if the pipeline needs to be installed at an angle, it is only necessary to tilt and fix the mounting plate, so that the pipeline can be installed according to the terrain.

[0013] 2. When the pipeline is installed, the present invention can make the pipeline rotate and move by setting the ball, which is labor-saving, and thus facilitates the installation of the pipeline and improves work efficiency.

[0014] 3. In the present invention, when water flows through the pipeline, if the pipeline shakes, the outer wall of the pipeline applies external force to the clamping ring. At this time, the expansion tube applies pressure to the return spring, and the threaded rod extends into the interior of the expansion tube. One clamping ring is away from the other clamping ring. The return spring has a buffering and shock-absorbing effect on the pipeline, thereby preventing the support structure from loosening due to long-term shaking and affecting its use.

[0015] 4. In the present invention, when the pipeline shakes and when the expansion cylinder is pressurized, the internal gas of the expansion cylinder is ejected from the port of the hose, and the sealing gasket can prevent the gas from overflowing. At this time, the gas passes through the threads of the threaded rod and the fastening bolts, and the gas is discharged from the threaded path. When negative pressure is generated in the expansion cylinder, the external gas enters the expansion cylinder through the air holes, and then the threads are ventilated by jetting through the shaking of the pipeline, thereby preventing the threads of the threaded rod and the fastening bolts from rusting, and facilitating disassembly or maintenance.

[0016] 5. When the temperature of the present invention rises, the volume of the thermal expansion material inside the expansion tube increases, generating an expansion force to press the piston. At this time, the threaded rod contracts into the inside of the expansion tube, moving the two clamping rings away from each other, reducing the squeezing force of the two clamping rings on the pipeline, and preventing the pipeline from being squeezed, deformed or damaged due to the increase in volume due to thermal expansion.

[0017] 6. When the temperature of the present invention decreases, the volume of the thermal expansion material decreases, and then the piston is displaced in the opposite direction by the return spring, and the threaded rod is extended out from the inside of the expansion cylinder, and the two clamping rings are brought closer to each other. At this time, the two clamping rings are tightened as the volume of the pipeline shrinks, avoiding the formation of a gap between the clamping ring and the pipeline, thereby enhancing the firmness of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the side section structure of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at C in the middle; Figure 7 It is a schematic diagram of the front cross-section structure of the present invention; Figure 8 For the present invention Figure 7 Middle D is a schematic diagram of the enlarged structure.

[0019] In the figure: 1. fixing frame; 2. clamping ring; 3. clamping assembly; 301. expansion cylinder; 302. piston; 303. threaded rod; 304. hose; 305. return spring; 306. flange bearing; 307. air hole; 308. fastening bolt; 309. sealing gasket; 310. guide rod; 311. limit block; 312. rotating circle; 313. one-way valve; 4. ball; 5. docking assembly; 501. fixing handle; 502. plug column; 503. through hole; 6. mounting plate; 7. mounting hole; 8. plate rib. DETAILED DESCRIPTION

[0020] 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. Example

[0021] The present invention provides the following technical solutions with reference to Figures (1-8): A water conservancy pipeline support structure comprises a fixing frame 1 and a clamping ring 2. The clamping ring 2 is arranged on the fixing frame 1. The fixing frame 1 is in a "U" shape. A clamping assembly 3 is arranged on the fixing frame 1.

[0022] The clamping assembly 3 includes an expansion cylinder 301, a piston 302 is arranged in the expansion cylinder 301, a threaded rod 303 is arranged on the piston 302, the threaded rod 303 is threadedly connected to the fixing frame 1, the interior of the expansion cylinder 301 located on one side of the piston 302 is filled with expansion material, hoses 304 are arranged on both sides of the threaded rod 303 on the expansion cylinder 301, the ends of the hoses 304 extend to the interior of the fixing frame 1, a return spring 305 is arranged on the other side of the piston 302 in the expansion cylinder 301, a flange bearing 306 is arranged at the bottom of the expansion cylinder 301, an air hole 307 is arranged on the surface of the expansion cylinder 301 near the flange bearing 306, the flange bearing 306 is connected to the clamping ring 2, a one-way valve 313 is arranged on the hose 304; and a ball 4 is arranged on the clamping ring 2.

[0023] During the installation of the water conservancy pipeline, as the terrain changes, the pipeline cannot be rotated and fixed at an angle, and its use is limited. When installing the pipeline, the pipeline needs to be inserted into the two clamping rings 2. Through the setting of the flange bearing 306, the angle of the clamping ring 2 can be changed, so that the clamping ring 2 rotates around the axis of the expansion tube 301. If the terrain changes, it is only necessary to rotate the clamping ring 2 to change the angle. If the pipeline needs to be installed at an angle, it is only necessary to tilt and fix the mounting plate 6, so that the pipeline can be installed according to the terrain.

[0024] During the installation of water conservancy pipelines, when the pipelines are spliced ​​together, the pipelines need to be rotated so that the ends of the pipelines are connected to each other to complete the splicing work; and when installing the pipelines, since the pipelines are relatively heavy, it is difficult to move the pipelines, which reduces work efficiency; when the pipelines are installed, the setting of the ball 4 can make the pipelines themselves rotate and move, which is more labor-saving, thereby facilitating the installation of the pipelines and improving work efficiency.

[0025] When the water conservancy pipeline is in use, if water flows through the pipeline, sometimes the water volume is too large and sometimes too small. Vibrations are generated as the water flow increases, and the acceleration of the water flow will cause the pipeline to shake. When water flows through the pipeline, if the pipeline shakes, the outer wall of the pipeline applies external force to the clamping ring 2. At this time, the expansion cylinder 301 applies pressure to the return spring 305, and the threaded rod 303 extends to the interior of the expansion cylinder 301. When one clamping ring 2 is away from the other clamping ring 2, the return spring 305 has a buffering and shock-absorbing effect on the pipeline, thereby preventing the support structure from loosening due to long-term shaking and affecting its use.

[0026] When the water conservancy pipeline is in use, it is easy to become humid as the environment changes, causing the threads of the bolts to rust, making it difficult to disassemble or maintain; when the pipeline shakes, as can be seen from the above, the piston 302 generates an amplitude in the expansion cylinder 301, causing the expansion cylinder 301 to be pressurized, and the internal gas of the expansion cylinder 301 is ejected from the port of the hose 304, and the sealing gasket 309 can prevent the gas from overflowing. At this time, the gas passes through the threads of the threaded rod 303 and the fastening bolt 308, and the gas is discharged from the threaded path. When negative pressure is generated in the expansion cylinder 301, the one-way valve 313 is used to prevent the gas in the hose 304 from flowing back, and the external gas enters the expansion cylinder 301 through the air hole 307, and then the threads are ventilated by jet ventilation through the shaking of the pipeline, thereby avoiding the threads of the threaded rod 303 and the fastening bolt 308 from rusting, which is convenient for disassembly or maintenance.

[0027] When the water conservancy pipeline is in use, due to the temperature difference in the weather, the pipeline is generally exposed to the outside. With the change of weather temperature, the pipeline has thermal expansion and contraction. When the temperature rises, the pipeline generates extrusion force, which causes certain damage to the pipeline. When the temperature drops, the extrusion force of the pipeline gradually decreases, and there is a gap between the clamping ring 2 and the pipeline, which is easy to cause loosening; when the temperature rises, the volume of the thermal expansion material inside the expansion cylinder 301 increases, and the expansion force is generated to press the piston 302. At this time, the threaded rod 303 shrinks to the inside of the expansion cylinder 301, and the two clamping rings 2 are separated from each other, reducing the extrusion force of the two clamping rings 2 on the pipeline, and avoiding the pipeline from being deformed or damaged by the increase of thermal expansion volume; on the contrary, when the temperature drops, the volume of the thermal expansion material decreases, and the piston 302 is displaced in the opposite direction by the return spring 305, and the threaded rod 303 is extended out from the inside of the expansion cylinder 301, and the two clamping rings 2 are close to each other. At this time, the two clamping rings 2 are tightened as the volume of the pipeline shrinks, avoiding the gap between the clamping ring 2 and the pipeline, and enhancing the firmness of the pipeline.

[0028] refer to Figure 2 and Figure 6 A fastening bolt 308 is threadedly connected to the threaded rod 303, a sealing gasket 309 is arranged between the fastening bolt 308 and the fixing frame 1, and the sealing gasket 309 is sleeved on the threaded rod 303 to block gas leakage; a gap is left between the threaded rod 303 and the expansion tube 301.

[0029] More specifically, by setting the fastening bolt 308, when the threaded rod 303 rotates to the specified position, the threaded rod 303 is fixed by the fastening bolt 308. When the piston 302 is displaced in the expansion cylinder 301, the internal air pressure of the expansion cylinder 301 flows through the gap, and the thermal expansion material is solid.

[0030] refer to Figure 2 and Figure 8A guide rod 310 is fixedly connected to the left and right sides of the fixing frame 1 near the threaded rod 303, and a limit block 311 is fixedly connected to the expansion cylinder 301. The guide rod 310 runs through the interior of the limit block 311, and the guide rod 310 is used to increase the stability of the expansion cylinder 301.

[0031] More specifically, when the expansion cylinder 301 and the threaded rod 303 are relatively displaced, the expansion cylinder 301 drives the guide rod 310 to slide in the limit block 311 , and the stability of the expansion cylinder 301 can be increased by the guide rod 310 .

[0032] refer to Figure 1 and Figure 2 The top end of the threaded rod 303 is fixedly connected with a rotating circle 312, and the rotating circle 312 is used to drive the threaded rod 303 to rotate.

[0033] More specifically, through the setting of the rotating circle 312, when the rotating circle 312 rotates, the rotating circle 312 drives the threaded rod 303 to rotate.

[0034] refer to Figure 1 , Figure 4 and Figure 5 There are two clamping rings 2, and the two clamping rings 2 are symmetrically spliced, and the joint of the two clamping rings 2 is fixedly connected with a docking component 5. The docking component 5 includes a fixed handle 501, and there are two fixed handles 501. One of the fixed handles 501 is fixedly connected with a plug post 502, and the other fixed handle 501 is provided with a through hole 503. The two clamping rings 2 are close to each other to drive the plug post 502 to be inserted into the through hole 503.

[0035] More specifically, when the two clamping rings 2 clamp the pipe, the two clamping rings 2 are brought close to each other, and at this time, the plug post 502 on one of the fixing handles 501 is inserted into the through hole 503 of the other fixing handle 501 for splicing.

[0036] refer to Figure 1 A mounting plate 6 is fixedly connected to the fixing frame 1 , a mounting hole 7 is opened on the mounting plate 6 , and a plate rib 8 is provided at the connection between the fixing frame 1 and the mounting plate 6 .

[0037] More specifically, expansion bolts can be inserted into the mounting holes 7 , and then the expansion bolts can be inserted into the building to fix the support structure. The provision of the plate ribs 8 increases the stability of the fixing frame 1 and the mounting plate 6 .

[0038] The present invention provides the following: When installing the pipeline, it is necessary to insert the pipeline into the two clamping rings 2. Through the setting of the flange bearing 306, the angle of the clamping ring 2 can be changed so that the clamping ring 2 rotates around the axis of the expansion tube 301. If the terrain changes, it is only necessary to rotate the clamping ring 2 to change the angle; if the pipeline needs to be installed at an angle, it is only necessary to tilt and fix the mounting plate 6, so that the pipeline can be installed according to the terrain.

[0039] When the pipeline is installed, the arrangement of the ball 4 can make the pipeline rotate and move, which is labor-saving, and thus facilitates the installation of the pipeline and improves work efficiency.

[0040] When water flows through the pipeline, if the pipeline shakes, the outer wall of the pipeline applies external force to the clamping ring 2. At this time, the expansion tube 301 puts pressure on the return spring 305, and the threaded rod 303 extends into the interior of the expansion tube 301. One clamping ring 2 is away from the other clamping ring 2. The return spring 305 has a buffering and shock-absorbing effect on the pipeline, avoiding long-term shaking that may cause the support structure to loosen and affect its use.

[0041] When the pipeline shakes, as can be seen from the above, the piston 302 generates an amplitude in the expansion cylinder 301, so that the expansion cylinder 301 is pressurized, and the internal gas of the expansion cylinder 301 is ejected from the port of the hose 304, and the sealing gasket 309 can prevent the gas from overflowing. At this time, the gas passes through the threads of the threaded rod 303 and the fastening bolt 308, and the gas is discharged from the threaded path. When negative pressure is generated in the expansion cylinder 301, the one-way valve 313 is used to prevent the gas in the hose 304 from flowing back, and the external gas enters the expansion cylinder 301 through the air hole 307, and then the threads are ventilated by jet ventilation through the shaking of the pipeline, so as to avoid rust on the threads of the threaded rod 303 and the fastening bolt 308, which is convenient for disassembly or maintenance.

[0042] When the temperature rises, the volume of the thermal expansion material inside the expansion tube 301 increases, generating an expansion force to press the piston 302. At this time, the threaded rod 303 contracts into the expansion tube 301, moving the two clamping rings 2 away from each other, reducing the squeezing force of the two clamping rings 2 on the pipeline, and avoiding the pipeline from being squeezed, deformed or damaged due to the increase in volume due to thermal expansion; conversely, when the temperature drops, the volume of the thermal expansion material decreases, and the piston 302 is displaced in the opposite direction through the return spring 305, and the threaded rod 303 is extended out from the inside of the expansion tube 301, moving the two clamping rings 2 closer to each other. At this time, the two clamping rings 2 are tightened as the volume of the pipeline shrinks, avoiding the formation of gaps between the clamping rings 2 and the pipeline, thereby enhancing the firmness of the pipeline.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water conservancy pipeline support structure, comprising a fixing frame (1) and a clamping ring (2), wherein the clamping ring (2) is arranged on the fixing frame (1), and is characterized in that: The fixing frame (1) is in a "U" shape, and a clamping assembly (3) is provided on the fixing frame (1); The clamping assembly (3) comprises an expansion cylinder (301), wherein a piston (302) is arranged in the expansion cylinder (301), wherein a threaded rod (303) is arranged on the piston (302), wherein the threaded rod (303) is threadedly connected to the fixing frame (1), wherein the interior of the expansion cylinder (301) is located on one side of the piston (302) and is filled with expansion material, wherein hoses (304) are arranged on both sides of the threaded rod (303) on the expansion cylinder (301), wherein the ends of the hoses (304) extend to Inside the fixing frame (1), a return spring (305) is arranged inside the expansion cylinder (301) on the other side of the piston (302), a flange bearing (306) is arranged at the bottom of the expansion cylinder (301), an air hole (307) is arranged on the surface of the expansion cylinder (301) near the flange bearing (306), the flange bearing (306) is connected to the clamping ring (2), a one-way valve (313) is arranged on the hose (304), and a ball (4) is arranged on the clamping ring (2).

2. A water conservancy pipeline support structure according to claim 1, characterized in that: A fastening bolt (308) is threadedly connected to the threaded rod (303); a sealing gasket (309) is provided between the fastening bolt (308) and the fixing frame (1); the sealing gasket (309) is sleeved on the threaded rod (303); the sealing gasket (309) blocks gas leakage; and a gap is left between the threaded rod (303) and the expansion cylinder (301).

3. A water conservancy pipeline support structure according to claim 1, characterized in that: Guide rods (310) are fixedly connected to both left and right sides of the fixing frame (1) close to the threaded rod (303); a limit block (311) is fixedly connected to the expansion cylinder (301); the guide rod (310) passes through the interior of the limit block (311); and the guide rod (310) is used to increase the stability of the expansion cylinder (301).

4. A water conservancy pipeline support structure according to claim 1, characterized in that: The top end of the threaded rod (303) is fixedly connected to a rotating ring (312), and the rotating ring (312) is used to drive the threaded rod (303) to rotate.

5. A water conservancy pipeline support structure according to claim 1, characterized in that: The number of the clamping rings (2) is two, and the two clamping rings (2) are symmetrically spliced ​​and arranged, and a docking assembly (5) is fixedly connected to the splicing point of the two clamping rings (2).

6. A water conservancy pipeline support structure according to claim 5, characterized in that: The docking assembly (5) comprises a fixing handle (501), wherein the fixing handles (501) are two in number, one of the fixing handles (501) being fixedly connected with a plug post (502), and the other fixing handle (501) being provided with a through hole (503), and the two clamping rings (2) being brought closer to each other to drive the plug post (502) to be inserted into the through hole (503).

7. A water conservancy pipeline support structure according to claim 1, characterized in that: A mounting plate (6) is fixedly connected to the fixing frame (1), a mounting hole (7) is provided on the mounting plate (6), and a plate rib (8) is provided at the connection between the fixing frame (1) and the mounting plate (6).

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