Air inlet pipe for turbocharging

Abstract

The invention relates to the technical field of turbine air inlet pipes, in particular to an air inlet pipe for turbocharging, which is provided with a plurality of connecting pipes, each connecting pipe comprises an inner pipe and an outer pipe, the outer pipe is provided with an annular inserting groove, the inner pipe is provided with an annular inserting end, and the annular inserting end is inserted into the annular inserting groove. A locking ring groove is formed in the annular inserting end, the locking ring groove is provided with an inner side wall and an outer side wall, a tensioning piece is arranged in the locking ring groove and comprises an outer spiral elastic strip and an inner spiral elastic strip which are arranged in an inner-outer sleeving mode, and a jacking assembly is arranged between the inner spiral elastic strip and the outer spiral elastic strip; the jacking assembly can make the outer spiral elastic strip expand outwards in the radial direction to jack the outer side wall of the locking ring groove and make the inner spiral strip contract inwards in the radial direction to jack the inner side wall of the locking ring groove at the same time, so that the annular inserting end expands in the radial direction to be in pressing fit with the annular inserting groove, and the inner pipe and the outer pipe are evenly stressed in the circumferential direction. The connection sealing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of turbine intake pipes, and in particular to an intake pipe for turbocharging. Background Art

[0002] Automobile engines usually use turbocharging technology, which uses the exhaust gas emitted by the engine to drive the turbine to rotate, and then drives the intake turbine to rotate to pressurize the air. The compressed and cooled air is transmitted to the engine cylinder through the intercooler, thereby improving fuel combustion efficiency.

[0003] Existing turbocharger intake pipes are usually made of plastic pipes and fixed by sleeve connection with clamps. However, the clamp fixation will cause uneven force on the circumference of the intake pipe, which will cause the local position of the intake pipe to be loosely connected, which can easily cause air leakage in the intake pipe. Summary of the invention

[0004] Based on this, it is necessary to provide a turbocharger intake pipe to address the problem that the current turbocharger intake pipe is prone to air leakage.

[0005] The above purpose is achieved through the following technical solutions: The cam is an air intake pipe for a turbocharger, and is provided with multiple connecting pipes. The connecting pipe comprises an inner pipe and an outer pipe, and the outer pipe is provided with an annular plug-in groove. The inner pipe has an annular plug-in end, and the axes of the annular plug-in end and the annular plug-in groove both extend in the front-rear direction. The annular plug-in end is inserted into the annular plug-in groove, and a locking ring groove is provided inside the annular plug-in end. The locking ring groove has an inner side wall and an outer side wall, and the diameter of the inner side wall is smaller than the diameter of the outer side wall; a tensioning piece is provided in the locking ring groove, and the tensioning piece comprises an outer spiral spring bar and an inner spiral spring bar arranged inside and outside, the diameter of the outer spiral spring bar is larger than the diameter of the inner spiral spring bar, and a pressing component is provided between the inner spiral spring bar and the outer spiral spring bar, and the pressing component can make the outer spiral spring bar expand radially outward to press the outer side wall of the locking ring groove, and at the same time make the inner spiral spring bar contract radially inward to press the inner side wall of the locking ring groove, so that the annular plug-in end expands radially and then is pressed and matched with the annular plug-in groove.

[0006] Furthermore, the end of the locking ring groove close to the annular plug-in groove is the rear end, the rear end of the locking ring groove is the bottom surface, the rear ends of the outer spiral spring bar and the inner spiral spring bar are fixedly connected to the bottom surface of the locking ring groove, and the diameter of the outer spiral spring bar gradually decreases from back to front, and the diameter of the inner spiral spring bar gradually increases from back to front.

[0007] Furthermore, the outer spiral elastic bar and the inner spiral elastic bar have the same rotation direction, and the cross-sections of the outer spiral elastic bar and the inner spiral elastic bar are both parallelograms, the parallelogram has an inclined surface, the inclined surface of the outer spiral elastic bar extends from front to back, and the inclined surface of the inner spiral elastic bar extends from back to front.

[0008] Furthermore, the top pressure assembly includes a rotating inner ring and a driving outer ring, a support ring is provided between the rotating inner ring and the driving outer ring, the support ring is arc-shaped, two support rods and a rotating rod are slidably provided on the support ring, and in the circumferential direction of the support ring, the rotating rod is centrally located between the two support rods; the front end of the support rod is fixedly provided on the driving outer ring, and the front and rear ends of the rotating rod are respectively rotatably provided on the driving outer ring and the rotating inner ring.

[0009] Furthermore, the rear end of the support rod extends out from the rear side of the rotating inner ring and is provided with a limiting cone, the rear end of the rotating rod extends out from the rear side of the rotating inner ring and is provided with a rotating gear, the bottom surface of the locking ring groove is provided with a first rotating groove, the limiting cone and the rotating gear can rotate along the first rotating groove, the first rotating groove is provided with teeth, and the rotating gear can drive the rotating rod to rotate while rotating along the first rotating groove.

[0010] Furthermore, the rotating rod is provided with an external thread, and the supporting ring is provided with a threaded hole, and the threaded hole cooperates with the rotating rod, and the rotating rod can drive the supporting ring to slide forward and backward along the supporting rod when rotating.

[0011] Furthermore, an upper slide rail is provided on the upper side of the support ring, an upper slider is provided on the upper slide rail, and the upper slider slides unidirectionally along the upper slide rail; a lower slide rail is provided on the lower side of the support ring, a lower slider is provided on the lower slide rail, and the lower slider slides unidirectionally along the lower slide rail, an upper latch is provided in the upper slider for sliding up and down, and a lower latch is provided in the lower slider for sliding up and down, the upper latch is used to press the outer spiral spring bar; the lower latch is used to press the inner spiral spring bar.

[0012] Furthermore, an upper locking groove is provided on the front side of the upper slider, and a lower locking groove is provided on the front side of the lower slider; an upper arc-shaped long hole and a lower arc-shaped long hole are provided on the driving outer ring; the upper arc-shaped long hole corresponds to the upper locking groove front and back, and the lower arc-shaped long hole corresponds to the lower locking groove front and back.

[0013] Furthermore, a second rotating groove is provided on the inner side surface of the locking ring groove, and the inner circumferential surface of the driving outer ring is rotatably arranged in the second rotating groove. A third rotating groove is provided on the end face of the annular plug-in end, and a protrusion is provided on the rear side surface of the driving outer ring, and the protrusion is rotatably arranged in the third rotating groove. A plurality of paddles are provided on the front side surface of the driving outer ring, and the driving outer ring can be driven to rotate by the paddles.

[0014] Furthermore, an inner bone ring is provided on the inner side of the annular plug-in groove, and an outer bone ring is provided on the outer side of the annular plug-in groove, and the inner bone ring and the outer bone ring are used to support the annular plug-in groove.

[0015] The beneficial effects of the present invention are: The turbocharger intake pipe provided by the present invention inserts the annular plug-in end of the inner pipe into the annular plug-in groove of the outer pipe, and then presses the locking ring groove of the annular plug-in end through a pressing component. Since the locking ring groove is provided with an outer spiral spring bar and an inner spiral spring bar, the pressing component can make the outer spiral spring bar expand radially outward to press the outer side wall of the locking ring groove, and at the same time make the inner spiral spring bar contract radially inward to press the inner side wall of the locking ring groove, so that the annular plug-in end expands radially and is pressed and matched with the annular plug-in groove, so that the inner pipe and the outer pipe are subjected to uniform force in the circumferential direction, avoid excessive local stress, and improve the connection and sealing effect of the inner pipe and the outer pipe.

[0016] Secondly, the outer spiral spring bar and the inner spiral spring bar can achieve double tightening, making the connection between the inner tube and the outer tube tighter and improving the connection strength between the inner tube and the outer tube.

[0017] Third, the outer spiral spring bar and the inner spiral spring bar gradually press the locking ring groove from back to front, so that the gas behind the locking ring groove can be gradually discharged forward, reducing the gas between the outer spiral spring bar and the inner spiral spring bar and the locking ring groove, thereby further improving the connection effect between the inner tube and the outer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a turbocharger intake pipe provided by an embodiment of the present invention; Figure 2 A side view of a turbocharger intake pipe provided by an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of the structure at center; Figure 4 A cross-sectional view of an inner pipe in a turbocharger intake pipe provided by one embodiment of the present invention; Figure 5 A cross-sectional view of an inner and outer pipe of a turbocharger intake pipe provided by an embodiment of the present invention; Figure 6 A partial enlarged view of a top pressure assembly in a turbocharger intake pipe provided by an embodiment of the present invention; Figure 7 A partial enlarged view of a tensioner in a turbocharger intake pipe provided in one embodiment of the present invention; Figure 8 A schematic diagram of a portion of the structure of a top pressure assembly in a turbocharger intake pipe provided by an embodiment of the present invention; Fig. 9 for Figure 8 Exploded diagram of Fig.10 A cross-sectional view of a top pressure assembly in a turbocharger intake pipe provided by an embodiment of the present invention; Fig.11A partial enlarged view of a driving outer ring in a turbocharger intake pipe provided in one embodiment of the present invention; Fig.12 A partial enlarged view of a rotating inner ring in a turbocharger intake pipe provided in one embodiment of the present invention; Fig.13 This is an exploded view of the structure of a turbocharger intake pipe provided in one embodiment of the present invention.

[0019] in: 100, turbocharger intake pipe; 200, connecting pipe; 210, outer pipe; 211, outer bone ring; 212, inner bone ring; 220, inner pipe; 221, first rotating groove; 222, second rotating groove; 223, third rotating groove; 230, tensioner; 231, outer spiral spring bar; 232, inner spiral spring bar; 240, driving outer ring; 241, rotating groove; 242, lower arc long hole; 243, paddle; 2 50. Rotating inner ring; 251. First through hole; 260. Pressing assembly; 261. Support ring; 2611. Threaded hole; 2612. Second through hole; 2613. Trapezoidal limiting strip; 262. Upper slider; 2621. Third through hole; 2622. Trapezoidal groove; 2623. Upper locking groove; 263. Lower slider; 264. Rotating rod; 2641. Rotating gear; 265. Support rod; 266. Upper latch. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] like Figures 1 to 13 As shown, an intake pipe 100 for turbocharging provided by an embodiment of the present invention is provided with multiple connecting pipes 200, wherein the connecting pipe 200 includes an inner pipe 220 and an outer pipe 210, wherein the outer pipe 210 is provided with an annular plug-in groove, and the inner pipe 220 has an annular plug-in end, wherein the axes of the annular plug-in end and the annular plug-in groove extend in the front-rear direction, and the annular plug-in end is inserted into the annular plug-in groove, wherein a locking ring groove is provided inside the annular plug-in end, and the locking ring groove has an inner side wall and an outer side wall, wherein the diameter of the inner side wall is smaller than the diameter of the outer side wall; A tensioning member 230 is provided inside, and the tensioning member 230 includes an outer spiral spring bar 231 and an inner spiral spring bar 232 provided inside and outside, the diameter of the outer spiral spring bar 231 is larger than the diameter of the inner spiral spring bar 232, and a pressing assembly 260 is provided between the inner spiral spring bar 232 and the outer spiral spring bar 231, and the pressing assembly 260 can make the outer spiral spring bar 231 expand radially outward to press the outer side wall of the locking ring groove, and at the same time make the inner spiral spring bar contract radially inward to press the inner side wall of the locking ring groove, so as to make the annular plug end expand radially and press fit with the annular plug groove. In this embodiment, the annular plug end is formed by bending the inner tube 220 outward, and after the annular plug end is plugged into the annular plug groove, the inner tube 220 is flush with the inner circumference of the outer tube 210.

[0024] In one embodiment, the locking ring groove is close to the rear end of one end of the annular plug-in groove, and the rear end of the locking ring groove is the bottom surface. The rear ends of the outer spiral spring bar 231 and the inner spiral spring bar 232 are fixedly connected to the bottom surface of the locking ring groove, and the diameter of the outer spiral spring bar 231 gradually decreases from back to front, and the diameter of the inner spiral spring bar 232 gradually increases from back to front.

[0025] In one embodiment, the outer spiral spring bar 231 and the inner spiral spring bar 232 have the same direction of rotation, and the cross-sections of the outer spiral spring bar 231 and the inner spiral spring bar 232 are both parallelograms, and the parallelogram has an inclined surface, the inclined surface of the outer spiral spring bar 231 extends from front to back, and the inclined surface of the inner spiral spring bar 232 extends from back to front. When the outer spiral spring bar 231 or the inner spiral spring bar 232 is pressed from back to front, the inclined surface will generate an axial extrusion force, so that the rear spring bar of the inner spiral spring bar 232 or the outer spiral spring bar 231 squeezes the front spring bar, and then the gap between the spring bars is squeezed, which promotes the discharge of gas in the locking ring groove and improves the sealing performance; at the same time, the axial extrusion force can cause the annular plug-in end of the inner tube 220 to deform axially, and then contact the annular plug-in groove of the outer tube 210 more closely.

[0026] In this embodiment, the outer spiral spring bar 231 and the inner spiral spring bar 232 are both wound in the counterclockwise direction. In other embodiments, the outer spiral spring bar 231 and the inner spiral spring bar 232 are both wound in the clockwise direction.

[0027] In one embodiment, the pressing assembly 260 includes a rotating inner ring 250 and a driving outer ring 240, a support ring 261 is provided between the rotating inner ring 250 and the driving outer ring 240, the support ring 261 is arc-shaped, two support rods 265 and a rotating rod 264 are slidingly provided on the support ring 261, and in the circumferential direction of the support ring 261, the rotating rod 264 is centrally located between the two support rods 265; the front end of the support rod 265 is fixed on the driving outer ring 240, and the rear end of the support rod 265 passes through the second through hole 2612 of the rotating inner ring 250, and the front and rear ends of the rotating rod 264 are rotatably provided on the driving outer ring 240 and the rotating inner ring 250 respectively.

[0028] In one embodiment, the rear end of the support rod 265 extends from the rotating inner ring 250 and is provided with a limiting cone, the rear end of the rotating rod 264 extends from the rear side of the rotating inner ring 250 and is provided with a rotating gear 2641, and the bottom surface of the locking ring groove is provided with a first rotating groove 221, the limiting cone and the rotating gear 2641 can rotate along the first rotating groove 221, and the first rotating groove 221 is provided with teeth. The rotating gear 2641 can drive the rotating rod 264 to rotate while rotating along the first rotating groove 221.

[0029] In one embodiment, the rotating rod 264 is provided with an external thread, and the supporting ring 261 is provided with a threaded hole 2611, and the threaded hole 2611 cooperates with the rotating rod 264, and the rotating rod 264 can drive the supporting ring 261 to slide forward and backward along the supporting rod 265 by self-rotation. The front end of the rotating rod 264 is rotatably disposed on the rotating groove 241 of the driving outer ring 240, the middle is located in the threaded hole 2611, and the rear end extends out from the first through hole 251 of the rotating inner ring 250.

[0030] In one embodiment, an upper slide rail is provided on the upper side of the support ring 261, and an upper slider 262 is provided on the upper slide rail. The upper slider 262 slides unidirectionally along the upper slide rail; a trapezoidal limit bar 2613 is provided on the upper slide rail, and unidirectional teeth are provided on the front and rear sides of the trapezoidal limit bar 2613. A trapezoidal groove 2622 is provided at the bottom of the upper slider 262, and unidirectional teeth are provided in the trapezoidal groove 2622. When viewed from the front to the back, the upper slider 262 can only slide in the clockwise direction on the upper slide rail. A lower slide rail is provided on the lower side of the support ring 261, and a lower slider 263 is provided on the lower slide rail. The lower slider 263 slides unidirectionally along the lower slide rail. The structure of the lower slide rail is the same as that of the lower slide rail. The structure of the lower slider 263 is the same as that of the upper slider 262. When viewed from the front to the back, the lower slider 263 can only slide in the counterclockwise direction on the lower slide rail.

[0031] An upper latch 266 is provided in the upper slider 262 to slide up and down, and a lower latch is provided in the lower slider 263 to slide up and down. A spring sheet is provided between the upper latch 266 and the upper slide rail, and the spring sheet enables the upper latch 266 to extend from the third through hole 2621 and press the outer spiral spring bar. A spring sheet is provided between the lower latch and the lower slide rail, and the lower latch extends from the lower slider 263 and presses the inner spiral spring bar. Two upper latches 266 and two lower latches are provided, and the pressing ends of the upper latches 266 and the lower latches are both spherical, thereby reducing friction and facilitating the pressing cooperation with the outer spiral spring bar 231 and the inner spiral spring bar 232. In other embodiments, the spring sheet can be replaced by a spring.

[0032] The ends of the outer spiral spring bar 231 and the inner spiral spring bar 232 are both provided with limiting holes. When the upper latch 266 slides to the end position of the outer spiral spring bar 231 and the lower latch slides to the end position of the inner spiral spring bar 232, the pressing end of the upper latch 266 and the pressing end of the lower latch will respectively enter their respective limiting holes and no longer slide relative to the outer spiral spring bar 231 or the inner spiral spring bar 232.

[0033] In one embodiment, the front side of the upper slider 262 is provided with an upper locking groove 2623, and the front side of the lower slider 263 is provided with a lower locking groove; the driving outer ring 240 is provided with an upper arc-shaped long hole and a lower arc-shaped long hole 242; the upper arc-shaped long hole corresponds to the upper locking groove 2623 front and back, and the lower arc-shaped long hole 242 corresponds to the lower locking groove front and back. The upper slider 262 can slide along the upper slide rail by inserting a screwdriver into the upper arc-shaped long hole and the upper locking groove 2623, and the upper slider 262 will not move after sliding into place, and the lower slider 263 can slide along the lower slide rail by inserting a screwdriver into the lower arc-shaped long hole 242 and the lower locking groove, and the lower slider 263 will not move after sliding into place.

[0034] In one embodiment, a second rotation groove 222 is provided on the inner side surface of the locking ring groove, and the inner circumference of the driving outer ring 240 is rotatably arranged in the second rotation groove 222. A third rotation groove 223 is provided on the end surface of the annular plug-in end, and a protrusion is provided on the rear side surface of the driving outer ring 240, and the protrusion is rotatably arranged in the third rotation groove 223. A plurality of paddles 243 are provided on the front side surface of the driving outer ring 240, and the driving outer ring 240 can be driven to rotate by the paddles 243.

[0035] In one embodiment, an inner bone ring 212 is provided on the inner side of the annular plug-in groove, and an outer bone ring 211 is provided on the outer side of the annular plug-in groove. The inner bone ring 212 and the outer bone ring 211 are used to support the annular plug-in groove, so that the annular plug-in groove is not easily deformed and the insertion of the annular plug end is convenient.

[0036] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: When in use, the annular plug end of the inner tube 220 is inserted into the annular plug groove of the outer tube 210, and then the outer ring 240 is driven to rotate counterclockwise through the paddle 243, thereby driving the support ring 261 and the rotating inner ring 250 to rotate counterclockwise synchronously, so that the rotating gear 2641 on the rotating rod 264 and the limiting round table on the supporting rod 265 rotate counterclockwise along the first rotating groove 221. While the rotating gear 2641 rotates along the first rotating groove 221, it can drive the rotating rod 264 to rotate, so that the rotating rod 264 drives the supporting ring 261 to slide along the supporting rod 265 from back to front, so that the upper slider 262 on the supporting ring 261 enters the inner circumference of the outer spiral spring bar 231, and the lower slider 263 enters the outer circumference of the inner spiral spring bar 232, so that the upper latch 266 shrinks. When the upper slider 262 is back to the inside of the upper slider 262, the lower latch pin is retracted into the inside of the lower slider 263; as the support ring 261 continues to rotate and move forward, the upper slider 262 of the support ring 261 continuously presses the outer spiral spring bar 231 outward, and the lower slider 263 continuously presses the inner spiral spring bar 232 inward, so that the outer spiral spring bar 231 expands radially outward to press the outer side wall of the locking ring groove, and the inner spiral spring bar contracts radially inward to press the inner side wall of the locking ring groove, so that the annular plug-in end expands radially and is then tightly connected with the annular plug-in groove; when the upper slider 262 slides to the front end of the outer spiral spring bar 231, the pressing end of the upper latch pin 266 pops out and enters the limiting hole of the outer spiral spring bar 231, and the pressing end of the lower latch pin pops out and enters the limiting hole of the inner spiral spring bar 232. Finally, a tool such as a screwdriver is used to extend into the upper arc-shaped long hole and the upper locking groove 2623, so that the upper slider 262 rotates clockwise on the upper slide rail, so that the upper sliding block drives the end of the outer spiral spring bar 231 to be further tightened outward, and a tool such as a screwdriver is used to extend into the lower arc-shaped long hole 242 and the lower locking groove, so that the lower slider 263 rotates counterclockwise on the lower slide rail, so that the lower sliding block drives the end of the inner spiral spring bar 232 to be further tightened. Since the upper slider 262 slides unidirectionally on the upper slide rail, the lower slider 263 slides unidirectionally on the lower slide rail, The upper slider 262 and the lower slider 263 cannot move in the reverse direction to achieve position locking, so that the outer spiral spring bar 231 and the inner spiral spring bar 232 remain in a tight state, thereby completing the sealed connection between the inner tube 220 and the outer tube 210. In this way, the inner tube 220 and the outer tube 210 are subjected to uniform force in the circumferential direction to avoid excessive local stress. At the same time, the outer spiral spring bar and the inner spiral spring bar can achieve double tightening, so that the inner tube 220 and the outer tube 210 are more tightly connected, the connection strength between the inner tube 220 and the outer tube 210 is improved, and the sealing effect of the connection between the inner tube 220 and the outer tube 210 is improved.

[0037] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A turbocharger intake pipe, characterized in that: The cam is provided with a plurality of connecting tubes, the connecting tube comprising an inner tube and an outer tube, the outer tube being provided with an annular plug-in groove, the inner tube having an annular plug-in end, the axes of the annular plug-in end and the annular plug-in groove extending in the front-rear direction, the annular plug-in end being inserted into the annular plug-in groove, the interior of the annular plug-in end being provided with a locking ring groove, the locking ring groove having an inner side wall and an outer side wall, the diameter of the inner side wall being smaller than the diameter of the outer side wall; a tensioning piece is provided in the locking ring groove, the tensioning piece comprises an outer spiral spring bar and an inner spiral spring bar arranged inside and outside, the diameter of the outer spiral spring bar being larger than the diameter of the inner spiral spring bar, a pressing component is provided between the inner spiral spring bar and the outer spiral spring bar, the pressing component can make the outer spiral spring bar expand radially outward to press the outer side wall of the locking ring groove, and at the same time make the inner spiral spring bar contract radially inward to press the inner side wall of the locking ring groove, so that the annular plug-in end is radially expanded and then pressed and matched with the annular plug-in groove.

2. The turbocharger intake pipe according to claim 1, characterized in that: The end of the locking ring groove close to the annular plug-in groove is the rear end, and the rear end of the locking ring groove is the bottom surface. The rear ends of the outer spiral spring bar and the inner spiral spring bar are fixedly connected to the bottom surface of the locking ring groove, and the diameter of the outer spiral spring bar gradually decreases from back to front, and the diameter of the inner spiral spring bar gradually increases from back to front.

3. The turbocharger intake pipe according to claim 2, characterized in that: The outer spiral elastic bar and the inner spiral elastic bar have the same rotation direction, and the cross-sections of the outer spiral elastic bar and the inner spiral elastic bar are both parallelograms, the parallelogram has an inclined surface, the inclined surface of the outer spiral elastic bar extends from front to back, and the inclined surface of the inner spiral elastic bar extends from back to front.

4. The turbocharger intake pipe according to claim 3, characterized in that: The pressing assembly includes a rotating inner ring and a driving outer ring, a support ring is provided between the rotating inner ring and the driving outer ring, the support ring is arc-shaped, two support rods and a rotating rod are slidingly provided on the support ring, and in the circumferential direction of the support ring, the rotating rod is centrally located between the two support rods; the front end of the support rod is fixedly provided on the driving outer ring, and the front and rear ends of the rotating rod are rotatably provided on the driving outer ring and the rotating inner ring respectively.

5. The turbocharger intake pipe according to claim 4, characterized in that: The rear end of the support rod extends out from the rear side of the rotating inner ring and is provided with a limiting round table. The rear end of the rotating rod extends out from the rear side of the rotating inner ring and is provided with a rotating gear. The bottom surface of the locking ring groove is provided with a first rotating groove. The limiting round table and the rotating gear can rotate along the first rotating groove. The first rotating groove is provided with teeth. The rotating gear can drive the rotating rod to rotate while rotating along the first rotating groove.

6. The turbocharger intake pipe according to claim 5, characterized in that: The rotating rod is provided with an external thread, and the supporting ring is provided with a threaded hole. The threaded hole cooperates with the rotating rod, and the rotating rod can drive the supporting ring to slide forward and backward along the supporting rod by self-rotation.

7. The turbocharger intake pipe according to claim 6, characterized in that: An upper slide rail is provided on the upper side of the support ring, an upper slider is provided on the upper slide rail, and the upper slider slides unidirectionally along the upper slide rail; a lower slide rail is provided on the lower side of the support ring, a lower slider is provided on the lower slide rail, and the lower slider slides unidirectionally along the lower slide rail; an upper latch is provided in the upper slider for sliding up and down, and a lower latch is provided in the lower slider for sliding up and down, the upper latch is used to press the outer spiral spring bar; the lower latch is used to press the inner spiral spring bar.

8. The turbocharger intake pipe according to claim 7, characterized in that: An upper locking groove is provided on the front side of the upper slider, and a lower locking groove is provided on the front side of the lower slider; an upper arc-shaped long hole and a lower arc-shaped long hole are provided on the driving outer ring; the upper arc-shaped long hole corresponds to the upper locking groove front and back, and the lower arc-shaped long hole corresponds to the lower locking groove front and back.

9. The turbocharger intake pipe according to claim 4, characterized in that: A second rotating groove is provided on the inner side surface of the locking ring groove, and the inner circumference of the driving outer ring is rotatably arranged in the second rotating groove. A third rotating groove is provided on the end surface of the annular plug-in end, and a protrusion is provided on the rear side surface of the driving outer ring, and the protrusion is rotatably arranged in the third rotating groove. A plurality of paddles are provided on the front side surface of the driving outer ring, and the driving outer ring can be driven to rotate by the paddles.

10. The turbocharger intake pipe according to claim 1, characterized in that: An inner bone ring is arranged on the inner side of the annular plug-in groove, and an outer bone ring is arranged on the outer side of the annular plug-in groove. The inner bone ring and the outer bone ring are used to support the annular plug-in groove.

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