Metal hose with quick connector for engineering machinery

Abstract

The invention relates to the technical field of metal hose quick connecting devices, in particular to a metal hose with a quick connector for engineering machinery, which comprises a hose body, a quick connector body, an adjusting structure, a replacing structure, an anti-dropping structure and an impressing groove, the anti-falling structure can secondarily fix the hose body at the end of the quick connector body, the situation that the hose body falls off at a connector due to too large internal medium pressure is avoided, meanwhile, the stainless steel braid layer is clamped to prevent the end of the stainless steel braid layer from loosening, and the connecting effect is improved. When the male connector shell and the female connector shell of the quick connector body are not connected in an inserted mode, a medium in a sealed pipeline can be blocked, medium circulation is automatically achieved after insertion, a detachable sealing seat is arranged, then a replacement structure is matched, an inner valve rod, a valve element and a reset spring can be conveniently replaced, and the maintenance difficulty is reduced; in addition, the adjusting structure can adjust the distance between the valve rod and the valve element of the quick connector body, so that the pressure of the internal reset spring is adjusted, the valve element better abuts against the sealing seat, and the sealing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal hose quick-connect devices, in particular to a metal hose with a quick connector for engineering machinery. Background Art

[0002] In the field of engineering machinery, metal hoses are key components of fluid transmission systems, and their performance directly affects the operational stability and safety of the equipment. During operation, engineering machinery often needs to quickly replace or adjust the hose connection position according to different working conditions. It is necessary to quickly disconnect the original hydraulic hose and connect the hose of the new attachment. The installation of quick connectors allows operators to complete the connection and disconnection of the hose through simple plug-in and pull-out actions without the need for tools, greatly shortening the equipment debugging time.

[0003] However, the existing metal hose and quick connector are mostly fixedly connected by hot melt or adhesive. When the hose is too long, it needs to be cut. The connection effect of the cut hose and the quick connector is poor. When the internal pressure of the pipeline is high, it is easy to fall off at the connection. In addition, after the metal hose is cut, the stainless steel wire braided layer at the end is easy to loosen, resulting in poor wrapping of the external wear-resistant layer, affecting the use effect of the hose. The valve core inside the existing metal hose quick connector directly contacts and seals with the male connector shell or the female connector shell, so the valve core cannot be removed at the interface. When the internal valve core, valve stem or return spring needs to be replaced, it is necessary to disconnect the female connector shell from the hose and the male connector from the device, and then remove the valve core, valve stem and return spring from the other end of the interface. This operation is troublesome, and the female connector needs to be re-fixed on the hose and the male connector needs to be fixed on the device later, which has low replacement efficiency and troublesome maintenance. When the male connector and female connector of the quick connector are connected, the internal return spring is in a compressed state for a long time. After long-term use, the internal return spring will produce a certain amount of wear. When the male connector and female connector are disconnected, the return spring cannot be completely reset, resulting in a deterioration of the valve core resistance sealing effect. The medium inside the pipeline is easy to seep out from the seal, affecting the sealing effect of the quick connector. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a metal hose with a quick connector for engineering machinery.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a metal hose with a quick connector for engineering machinery, comprising a hose body, a quick connector body provided on the hose body, an adjustment structure, a replacement structure and an anti-slip structure provided on the quick connector body, and an embossed groove provided on the hose body; The hose body comprises an inner rubber layer, a middle stainless steel wire braided layer, and an outer wear-resistant protective layer. The end of the rubber layer is provided with a quick connector body, and the hose body is embossed with multiple groups of linear arrays of embossed grooves. The quick connector body comprises a female connector shell and a male connector shell inserted into the female connector shell. The female connector shell is hot-melt connected to the rubber layer. The anti-slip structure includes an external threaded sleeve and an internal threaded sleeve threadedly connected to the external threaded sleeve, the external threaded sleeve is fixedly connected to the female joint shell, a plurality of sliding grooves are provided in a circumferential array on the female joint shell, a driving rod with a "Z"-shaped cross-section is slidably connected inside the sliding groove, a slip ring is slidably connected inside the female joint shell, a plurality of third balls are installed inside the female joint shell, the slip ring contacts the third balls, the third balls are engaged with the embossing groove, the driving rod is fixedly connected to the slip ring, a rotating groove is provided on the internal threaded sleeve, the end of the driving rod is rotatably connected to the rotating groove, a sealing cover is fixedly connected to the internal threaded sleeve, and the sealing cover contacts the driving rod.

[0006] Specifically, the multiple embossed grooves in each group are arranged in a ring array, and the cross-section of the end portion of the slip ring is a trapezoidal structure.

[0007] Specifically, the end of the driving rod is rotatably connected to a second ball, and the second ball is rollingly connected to the internal threaded sleeve.

[0008] Specifically, a sliding shell is slidably connected to the female connector shell, a frosted ring is fixedly connected to the sliding shell, a compression spring is fixedly connected between the sliding shell and the female connector shell, a plurality of first balls are installed on the female connector shell, the sliding shell contacts the first balls, and the first balls engage with the limiting grooves on the male connector shell.

[0009] Specifically, the interior of the male connector housing and the female connector housing are fixedly connected to a fixing plate, a guide sleeve with a T-shaped cross-section is fixedly connected to the fixing plate, a valve stem with a T-shaped cross-section is slidably connected to the guide sleeve, a valve core is provided at the end of the valve stem, the guide sleeve and the outer sleeve of the valve stem are provided with a reset spring, the two ends of the reset spring respectively contact with the guide sleeve and the end of the valve stem, the valve core is a truncated cone structure as a whole, and a sealing seat with a truncated cone-shaped hole is threadedly connected to each of the male connector housing and the female connector housing, and the valve core on the male connector housing contacts the valve core on the female connector housing.

[0010] Specifically, a first sealing groove is provided on the female connector housing, a first sealing ring is provided inside the first sealing groove, and the male connector housing is slidably connected to the first sealing ring.

[0011] Specifically, the replacement structure includes a driving groove and a mounting groove. The sealing seat is provided with a driving groove with a regular hexagonal cross-section, and the sealing seat is provided with an annular mounting groove. A magnetic ring is fixedly connected to the interior of the mounting groove.

[0012] Specifically, a fourth sealing groove is provided on the male connector housing and the female connector housing, a fourth sealing ring is provided inside the fourth sealing groove, and the end of the sealing seat contacts the fourth sealing ring.

[0013] Specifically, the adjustment structure includes a screw and a sliding rod, the screw is rotatably connected to the valve core, the sliding rod is threadedly connected to the screw, the sliding rod is slidingly connected to the valve core, the sliding rod is fixedly connected to the valve stem, a second sealing groove is provided inside the valve core, a second sealing ring is fixedly connected inside the second sealing groove, the sliding rod is slidingly connected to the second sealing ring, a plurality of guide rods are fixedly connected to the valve stem, and the guide rods are slidably connected to the valve core.

[0014] Specifically, a third sealing groove is provided on the valve core on the female connector housing, a third sealing ring is provided in the third sealing groove, and the valve core on the male connector housing contacts the third sealing ring.

[0015] The beneficial effects of the present invention are: (1) The metal hose with a quick connector for engineering machinery described in the present invention has a quick connector body at the end of the hose body, and an anti-slip structure is provided on the quick connector body. The anti-slip structure facilitates secondary fixation of the hose body at the end of the quick connector body, effectively preventing the hose body from falling off at the interface due to excessive pressure of the medium inside the hose body, and at the same time clamping the stainless steel braided layer of the hose body to prevent the end of the stainless steel braided layer from loosening, thereby improving the connection effect between the quick connector body and the hose body.

[0016] (2) The metal hose with a quick connector for engineering machinery described in the present invention has a replacement structure on the quick connector body. When the male connector shell and the female connector shell of the quick connector body are not plugged in, the internal medium of the pipeline is blocked and sealed. After plugging in, the internal medium is automatically circulated, thereby improving the use effect. At the same time, the quick connector body is provided with a detachable sealing seat, which makes it easy to replace the internal valve stem, valve core and reset spring through the replacement structure, thereby reducing the difficulty of maintaining the valve stem, valve core and reset spring.

[0017] (3) The metal hose with a quick connector for engineering machinery described in the present invention has an adjustment structure on the quick connector body. The adjustment structure is used to adjust the distance between the valve stem and the valve core of the quick connector body, thereby adjusting the pressure of the return spring inside the quick connector body, so that the valve core can better contact with the sealing seat, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a metal hose with a quick connector for engineering machinery provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown; Figure 3 This is a schematic diagram of the connection structure between the female connector housing and the hose body of the present invention; Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B is shown; Figure 5 for Figure 3 The enlarged schematic diagram of the C-section structure is shown; Figure 6 Schematic diagram of the connection structure between the internal thread sleeve and the external thread sleeve of the present invention; Figure 7 Schematic diagram of the connection structure between the valve stem and the valve core of the present invention; Figure 8 for Figure 7 The enlarged schematic diagram of the D part structure is shown; Figure 9 It is a schematic diagram of the connection structure between the sealing seat and the driving groove of the present invention.

[0020] In the figure: 1. Hose body; 101. Rubber layer; 102. Stainless steel wire braided layer; 103. Wear-resistant protective layer; 2. Quick connector body; 201. Female connector housing; 202. Male connector housing; 203. Sliding housing; 204. Frosted ring; 205. Compression spring; 206. First ball bearing; 207. Limiting groove; 208. Fixing plate; 209. Guide sleeve; 210. Valve stem; 211. Return spring; 212. Valve core; 213. First sealing groove; 214. First sealing ring; 215. Sealing seat; 3. Adjustment structure; 301. Screw ; 302, sliding rod; 303, second sealing groove; 304, second sealing ring; 305, guide rod; 306, third sealing groove; 307, third sealing ring; 4, replacement structure; 401, driving groove; 402, mounting groove; 403, magnetic ring; 404, fourth sealing groove; 405, fourth sealing ring; 5, anti-slip structure; 501, external threaded sleeve; 502, internal threaded sleeve; 503, sliding groove; 504, driving rod; 505, rotating groove; 506, second ball; 507, sealing cover; 508, sliding ring; 509, third ball; 6, embossing groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the metal hose with a quick connector for engineering machinery according to the present invention comprises a hose body 1, a quick connector body 2 provided on the hose body 1, an adjustment structure 3, a replacement structure 4 and an anti-slip structure 5 provided on the quick connector body 2, and an embossed groove 6 provided on the hose body 1; The hose body 1 includes an inner rubber layer 101, a middle stainless steel wire braided layer 102 and an outer wear-resistant protective layer 103. The end of the rubber layer 101 is provided with a quick connector body 2. The hose body 1 is embossed with multiple groups of linear array embossing grooves 6; the innermost layer of the hose body 1 is the rubber layer 101. The rubber layer 101 hose is fixed on the rotating shaft of the braiding machine to ensure that the axis of the rubber layer 101 hose is concentric with the rotating shaft and is in a horizontal and stable state. When fixing, the clamps at both ends should clamp the rubber layer 101, but avoid excessive squeezing to cause deformation of the hose. Then, the selected stainless steel wire is fixed to the rubber layer 101 hose. The starting position of the tube can be fixed with a special fixing glue or metal clip. The fixing point should be firm to prevent the material from loosening during the weaving process. Start the weaving machine and adjust the tension according to the characteristics of the weaving material so that the weaving material is tightly wound around the rubber layer 101 hose surface in a spiral shape to form a stainless steel wire braided layer 102. The braided stainless steel wire braided layer 102 is surface treated and polished to improve the surface finish and enhance corrosion resistance. Then, after fully stirring the wear-resistant coating, pour it into the material tank of the high-pressure airless spray equipment. After setting the spraying pressure, fix the metal hose on the rotating workbench and keep a certain distance between the spray gun and the hose surface. The coating is sprayed in a spiral trajectory to ensure uniform coating coverage. After spraying, the coating is cured according to its characteristics to form a wear-resistant protective layer 103. The hose body 1 is mounted on the workbench of the stamping machine, and the positioning fixture is used to position the hose body 1 axially and radially. The clamping force of the fixture should be moderate to avoid damage to the hose body 1 and ensure that the hose body 1 does not move during the stamping process. The stamping machine is started and the pressure is slowly adjusted to an appropriate value. Multiple groups of embossed grooves 6 in a linear array are pressed out on the hose body 1 by the stamping machine, thereby improving the rubber layer 101, the stainless steel wire braided layer 102 and the wear-resistant protective layer 1. 03, which improves the use effect of the hose body 1; the quick connector body 2 includes a female connector shell 201 and a male connector shell 202 inserted into the female connector shell 201, and the female connector shell 201 is hot-melt connected to the rubber layer 101; the hose body 1 of a suitable length can be selected according to the actual scenario. If the hose body 1 is too long, the hose body 1 can also be cut, and then the Rongguo hot melt machine is used to hot-melt the rubber layer 101 of the hose body 1. After the hot melting is completed, one end of the female connector shell 201 is inserted into the hot-melt part of the rubber layer 101 to achieve the connection between the female connector shell 201 and the hose body 1; The anti-slip structure 5 includes an external threaded sleeve 501 and an internal threaded sleeve 502 threadedly connected to the external threaded sleeve 501. The external threaded sleeve 501 is fixedly connected to the female connector housing 201. A plurality of slide grooves 503 are arranged in a circumferential array on the female connector housing 201. A driving rod 504 with a "Z"-shaped cross section is slidably connected to the slide groove 503. A slip ring 508 is slidably connected to the female connector housing 201. A plurality of The third ball 509, the slip ring 508 and the third ball 509 are in conflict with each other, the third ball 509 is engaged with the embossing groove 6, the driving rod 504 is fixedly connected to the slip ring 508, the internal threaded sleeve 502 is provided with a rotation groove 505, the end of the driving rod 504 is rotatably connected to the rotation groove 505, the internal threaded sleeve 502 is fixedly connected with a cover 507, and the cover 507 is in conflict with the driving rod 504; the multiple embossing grooves 6 of each group are arranged in a ring array , the cross-section of the end of the slip ring 508 is a trapezoidal structure; the end of the driving rod 504 is rotatably connected to the second ball 506, and the second ball 506 is rollingly connected to the internal threaded sleeve 502; the internal threaded sleeve 502 is rotated by a wrench, and since the internal threaded sleeve 502 is threadedly connected to the external threaded sleeve 501, the internal threaded sleeve 502 will move axially along the external threaded sleeve 501 when it rotates, and the rotating groove 505 on the internal threaded sleeve 502 is rotatably connected to the end of the driving rod 504, and the internal threaded sleeve When 502 moves, the driving rod 504 drives the slip ring 508 to slide inside the female connector housing 201, and the trapezoidal structure at the end of the slip ring 508 conflicts with the third ball 509. When the slip ring 508 moves, it pushes the third ball 509, so that the third ball 509 is stuck in the embossed groove 6 on the hose body 1, thereby achieving secondary fixation of the hose body 1, preventing the hose body 1 from falling off at the interface, and effectively avoiding the loosening of the stainless steel wire of the stainless steel wire braided layer 102 after the secondary cutting.

[0023] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown, a sliding shell 203 is slidably connected to the female connector housing 201, a frosted ring 204 is fixedly connected to the sliding shell 203, a compression spring 205 is fixedly connected between the sliding shell 203 and the female connector housing 201, a plurality of first balls 206 are installed on the female connector housing 201, the sliding shell 203 conflicts with the first balls 206, and the first balls 206 are engaged with the limiting grooves 207 on the male connector housing 202; the interiors of the male connector housing 202 and the female connector housing 201 are fixedly connected with a fixing plate 208, a guide sleeve 209 with a T-shaped cross section is fixedly connected to the fixing plate 208, a valve stem 210 with a T-shaped cross section is slidably connected to the guide sleeve 209, and the valve stem A valve core 212 is provided at the end of 210, and a return spring 211 is provided on the outer sleeve of the guide sleeve 209 and the valve stem 210. The two ends of the return spring 211 respectively contact the ends of the guide sleeve 209 and the valve stem 210. The valve core 212 has an overall truncated cone structure. The male connector housing 202 and the female connector housing 201 are each threadedly connected to a sealing seat 215 having a truncated cone-shaped hole. The valve core 212 on the male connector housing 202 contacts the valve core 212 on the female connector housing 201. A first sealing groove 213 is provided on the female connector housing 201. A first sealing ring 214 is provided inside the first sealing groove 213. The male connector housing 202 is slidably connected to the first sealing ring 214.Then insert the male connector shell 202 into the female connector shell 201. When plugging in, first slide the frosted ring 204, which then drives the sliding shell 203 to slide, the compression spring 205 is compressed, and the first ball 206 contacts the male connector shell 202 and slides upward until the male connector shell 202 is fully inserted. After the limit groove 207 moves to the specified position, the first ball 206 falls and locks the male connector shell 202. At the same time, the compression spring 205 resets, driving the sliding shell 203 to reset. The convex ring part inside the sliding shell 203 conflicts with the first ball 206 to prevent the first ball 206 from rebounding, thereby fixing the male connector shell 202. At the same time, the valve core 212 on the male connector shell 202 conflicts with the valve core 212 on the female connector shell 201. During the process of plugging in the male connector shell 202, when the male connector shell 202 is fully inserted, the limit groove 207 moves to the specified position, and the first ball 206 falls and locks the male connector shell 202. When 202 passes the first sealing groove 213 and the first sealing ring 214 on the female connector housing 201 (at this time the male connector housing 202 is not yet fully plugged in), the two valve cores 212 will first collide with each other, and the valve core 212 will drive the valve stem 210 to slide on the guide sleeve 209. The sealing ring on the valve core 212 will no longer conflict with the sealing seat 215. The return spring 211 is compressed and continues to push the male connector housing 202, which will realize that the two valve cores 212 no longer seal the sealing seat 215, and the circulating medium inside the female connector housing 201 flows to the inside of the male connector housing 202, realizing the circulation of the medium. When the connection between the male connector housing 202 and the female connector housing 201 is released, the return spring 211 is reset and drives the valve core 212 to re-seal with the sealing seat 215, thereby realizing the blocking seal of the medium. The replacement structure 4 includes a drive groove 401 and a mounting groove 402, the sealing seat 215 is provided with a drive groove 401 with a regular hexagonal cross-section, the sealing seat 215 is provided with an annular mounting groove 402, and the interior of the mounting groove 402 is fixedly connected to a magnetic ring 403; the male connector housing 202 and the female connector housing 201 are both provided with a fourth sealing groove 404, the interior of the fourth sealing groove 404 is provided with a fourth sealing ring 405, and the end of the sealing seat 215 conflicts with the fourth sealing ring 405; unlike the traditional quick connector body 2, the valve core 212 of the traditional quick connector body 2 is directly sealed with the male connector housing 202 and the female connector housing 201, so when replacing the internal valve stem 210 and the valve core 212, only the connection end of the female connector housing 201 and the hose body 1 can be cut off, and the male connector housing 202 and the equipment The connecting end can be replaced, but the internal valve core 212 of the quick connector body 2 is sealed with the sealing seat 215. Therefore, when the valve stem 210, valve core 212, and return spring 211 need to be replaced, it is only necessary to use a tool to insert the driving groove 401 on the sealing seat 215, and then rotate the sealing seat 215 to remove the sealing seat 215 from the male connector housing 202 or the female connector housing 201. Since a magnetic ring 403 is provided in the mounting groove 402 on the sealing seat 215, the magnetic ring 403 can adsorb the removed sealing seat 215 to prevent it from falling. Then the internal valve stem 210, valve core 212 and return spring 211 can be taken out for replacement. After the replacement is completed, the new sealing seat 215 is installed back to its original position through the driving groove 401. At the same time, the fourth sealing ring 405 ensures the seal between the sealing seat 215 and the male connector housing 202 or the female connector housing 201.

[0024] Specifically, such as Figure 4 、 Figure 8 and Figure 9As shown, the adjusting structure 3 includes a screw 301 and a slide rod 302, the screw 301 is rotatably connected to the valve core 212, the slide rod 302 is threadedly connected to the screw 301, the slide rod 302 is slidably connected to the valve core 212, the slide rod 302 is fixedly connected to the valve stem 210, a second sealing groove 303 is provided inside the valve core 212, a second sealing ring 304 is fixedly connected inside the second sealing groove 303, the slide rod 302 is slidably connected to the second sealing ring 304, a plurality of guide rods 305 are fixedly connected to the valve stem 210, and the guide rods 305 are slidably connected to the valve core 212; a third sealing groove 306 is provided on the valve core 212 on the female connector housing 201, a third sealing ring 307 is provided in the third sealing groove 306, the valve core 212 on the male connector housing 202 abuts against the third sealing ring 307 When the cam 210 is in the closed position, the cam 211 is in the closed position, and the cam 212 is in the open position, so that the cam 212 is in the open position and the cam 212 is out of the open position.

[0025] When the present invention is in use, first, the innermost layer of the hose body 1 is the rubber layer 101, and the rubber layer 101 hose is fixed on the rotating shaft of the braiding machine to ensure that the axis of the rubber layer 101 hose is concentric with the rotating shaft and is in a horizontal and stable state. When fixing, the clamps at both ends should clamp the rubber layer 101, but avoid excessive squeezing to cause deformation of the hose, and then fix the selected stainless steel wire to the starting position of the rubber layer 101 hose. It can be fixed with a special fixing glue or metal clamp. The fixing point must be firm to prevent the material from loosening during the braiding process. Start the braiding machine, adjust the tension according to the characteristics of the braided material, so that the braided material is tightly wound around the surface of the rubber layer 101 hose in a spiral shape to form a stainless steel wire braided layer 102. The braided stainless steel wire braided layer 102 is surface treated and can be polished to improve the surface finish and enhance corrosion resistance. Then, the wear-resistant coating is fully applied. After stirring evenly, pour it into the material tank of the high-pressure airless spray equipment, set the spraying pressure, fix the metal hose on the rotating workbench, keep a certain distance between the spray gun and the surface of the hose, and spray according to the spiral trajectory to ensure uniform coverage of the paint. After the spraying is completed, the paint is cured according to the characteristics of the paint to form a wear-resistant protective layer 103, and the hose body 1 is installed on the workbench of the stamping machine. The positioning fixture is used to position the hose body 1 axially and radially. The clamping force of the fixture should be moderate to avoid damage to the hose body 1. At the same time, it is ensured that the hose body 1 will not be displaced during the stamping process. Start the stamping machine, slowly adjust the pressure to an appropriate value, and use the stamping machine to extrude multiple groups of stamping grooves 6 in a linear array on the hose body 1, thereby improving the tightness between the rubber layer 101, the stainless steel wire braided layer 102 and the wear-resistant protective layer 103, thereby improving the use effect of the hose body 1; Then, you can choose the appropriate length of the hose body 1 according to the actual scene needs. If the hose body 1 is too long, you can also cut the hose body 1, and then use the Rongguo hot melt machine to hot melt the rubber layer 101 of the hose body 1. After the hot melting is completed, insert one end of the female connector shell 201 into the hot melt part of the rubber layer 101 to achieve the connection between the female connector shell 201 and the hose body 1. Then use a wrench to rotate the internal threaded sleeve 502. Since the internal threaded sleeve 502 is threadedly connected to the external threaded sleeve 501, the internal threaded sleeve 502 will move axially along the external threaded sleeve 501 when it rotates, and the internal thread The rotating groove 505 on the sleeve 502 is rotatably connected to the end of the driving rod 504. When the internal threaded sleeve 502 moves, the driving rod 504 drives the slip ring 508 to slide inside the female connector housing 201. The trapezoidal structure at the end of the slip ring 508 conflicts with the third ball 509. When the slip ring 508 moves, it pushes the third ball 509, causing the third ball 509 to be stuck in the embossed groove 6 on the hose body 1, thereby achieving secondary fixation of the hose body 1, preventing the hose body 1 from falling off at the interface, and effectively preventing the stainless steel wires of the stainless steel wire braided layer 102 from loosening after secondary cutting. Then insert the male connector shell 202 into the female connector shell 201. When plugging in, first slide the frosted ring 204, which then drives the sliding shell 203 to slide, the compression spring 205 is compressed, and the first ball 206 contacts the male connector shell 202 and slides upward until the male connector shell 202 is fully inserted. After the limit groove 207 moves to the specified position, the first ball 206 falls and locks the male connector shell 202. At the same time, the compression spring 205 resets, driving the sliding shell 203 to reset. The convex ring part inside the sliding shell 203 conflicts with the first ball 206 to prevent the first ball 206 from rebounding, thereby fixing the male connector shell 202. At the same time, the valve core 212 on the male connector shell 202 is in contact with the female connector shell 2 01, during the process of plugging the male connector housing 202, when the male connector housing 202 passes the first sealing groove 213 and the first sealing ring 214 on the female connector housing 201 (at this time the male connector housing 202 has not been fully plugged in), the two valve cores 212 will first conflict with each other, and the valve core 212 will drive the valve stem 210 to slide on the guide sleeve 209. The sealing ring on the valve core 212 no longer conflicts with the sealing seat 215, and the return spring 211 is compressed and continuously pushes the male connector housing 202, which will realize that the two valve cores 212 no longer seal the sealing seat 215, and the circulating medium inside the female connector housing 201 flows to the inside of the male connector housing 202, realizing the circulation of the medium. When the male connector housing 202 is connected to the female connector housing 201, the reset spring 211 resets and drives the valve core 212 to reseal with the sealing seat 215, thereby achieving a blocking seal for the medium. Unlike the conventional quick connector body 2, the valve core 212 of the conventional quick connector body 2 is directly sealed with the male connector housing 202 and the female connector housing 201. Therefore, when replacing the internal valve stem 210 and valve core 212, only the connection end between the female connector housing 201 and the hose body 1 and the connection end between the male connector housing 202 and the equipment can be cut off for replacement. However, the internal valve core 212 of the quick connector body 2 is sealed with the sealing seat 215, so when the valve stem 210 and valve core 212 need to be replaced, When the core 212 and the return spring 211 are removed, it is only necessary to use a tool to insert it into the driving groove 401 on the sealing seat 215, and then rotate the sealing seat 215 to remove the sealing seat 215 from the male connector housing 202 or the female connector housing 201. Since a magnetic ring 403 is provided in the installation groove 402 on the sealing seat 215, the magnetic ring 403 can absorb the removed sealing seat 215 to prevent it from falling. Then the internal valve stem 210, valve core 212 and return spring 211 can be taken out for replacement. After the replacement is completed, the new sealing seat 215 is installed back to its original position through the driving groove 401. At the same time, the fourth sealing ring 405 ensures the seal between the sealing seat 215 and the male connector housing 202 or the female connector housing 201; Finally, when the sealing effect needs to be adjusted, the screw 301 is rotated by a tool, the screw 301 is threadedly connected to the slide rod 302, and the slide rod 302 is fixedly connected to the valve stem 210. When the screw 301 rotates, the slide rod 302 is driven to slide inside the valve core 212, thereby adjusting the distance between the valve stem 210 and the valve core 212, and then changing the compression amount of the return spring 211, adjusting the pressure of the return spring 211, so that the valve core 212 can better contact with the sealing seat 215, thereby improving the sealing effect. The setting of the guide rod 305 prevents the valve core 212 from rotating with the screw 301. The cross-section of the sliding part of the valve stem 210 and the guide sleeve 209 is square, which prevents the valve stem 210 from rotating together. The setting of the second sealing ring 304 and the third sealing ring 307 prevents the internal medium from flowing into the screw 301 part, avoids corrosion of the screw 301, and improves the service life.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A metal hose with a quick connector for construction machinery, characterized in that: It comprises a hose body (1), a quick connector body (2) provided on the hose body (1), an adjustment structure (3), a replacement structure (4) and an anti-slip structure (5) provided on the quick connector body (2), and an embossed groove (6) provided on the hose body (1); The hose body (1) comprises an inner rubber layer (101), a middle stainless steel wire braided layer (102), and an outer wear-resistant protective layer (103); a quick connector body (2) is provided at the end of the rubber layer (101); and the hose body (1) is embossed with a plurality of linear array embossed grooves (6); The quick connector body (2) comprises a female connector housing (201) and a male connector housing (202) plugged into the female connector housing (201), and the female connector housing (201) is connected to the rubber layer (101) by hot melt; The anti-slip structure (5) includes an external threaded sleeve (501) and an internal threaded sleeve (502) threadedly connected to the external threaded sleeve (501), the external threaded sleeve (501) is fixedly connected to the female joint housing (201), a plurality of sliding grooves (503) are arranged in a circumferential array on the female joint housing (201), a driving rod (504) with a "Z"-shaped cross section is slidably connected inside the sliding groove (503), a slip ring (508) is slidably connected inside the female joint housing (201), and the female joint housing (201) is provided with a plurality of sliding grooves (503) in a circumferential array. A plurality of third balls (509) are installed inside, the slip ring (508) contacts the third balls (509), the third balls (509) are engaged with the stamping groove (6), the driving rod (504) is fixedly connected to the slip ring (508), a rotating groove (505) is provided on the internal threaded sleeve (502), the end of the driving rod (504) is rotatably connected to the rotating groove (505), a cover (507) is fixedly connected to the internal threaded sleeve (502), and the cover (507) contacts the driving rod (504).

2. The metal hose with a quick connector for construction machinery according to claim 1, characterized in that: The plurality of embossed grooves (6) in each group are arranged in a ring array, and the cross-section of the end of the slip ring (508) is a trapezoidal structure.

3. The metal hose with a quick connector for construction machinery according to claim 1, characterized in that: The end of the driving rod (504) is rotatably connected to a second ball (506), and the second ball (506) is rollingly connected to the internal threaded sleeve (502).

4. The metal hose with a quick connector for construction machinery according to claim 1, characterized in that: A sliding shell (203) is slidably connected to the female connector housing (201), a frosted ring (204) is fixedly connected to the sliding shell (203), a compression spring (205) is fixedly connected between the sliding shell (203) and the female connector housing (201), a plurality of first balls (206) are installed on the female connector housing (201), the sliding shell (203) contacts the first balls (206), and the first balls (206) engage with the limiting grooves (207) on the male connector housing (202).

5. The metal hose with a quick connector for construction machinery according to claim 4, characterized in that: The male connector housing (202) and the female connector housing (201) are both fixedly connected to a fixing plate (208), a guide sleeve (209) with a T-shaped cross section is fixedly connected to the fixing plate (208), a valve stem (210) with a T-shaped cross section is slidably connected to the guide sleeve (209), a valve core (212) is provided at the end of the valve stem (210), and a return spring (211) is provided on the outer sleeve of the guide sleeve (209) and the valve stem (210), the two ends of the return spring (211) respectively contact the ends of the guide sleeve (209) and the valve stem (210), and the valve core (212) is a truncated cone structure as a whole. A sealing seat (215) with a truncated cone hole is threadedly connected to each of the male connector housing (202) and the female connector housing (201), and the valve core (212) on the male connector housing (202) contacts the valve core (212) on the female connector housing (201).

6. The metal hose with a quick connector for construction machinery according to claim 5, characterized in that: A first sealing groove (213) is provided on the female connector housing (201), a first sealing ring (214) is provided inside the first sealing groove (213), and the male connector housing (202) is slidably connected to the first sealing ring (214).

7. The metal hose with a quick connector for construction machinery according to claim 5, characterized in that: The replacement structure (4) comprises a driving groove (401) and a mounting groove (402); the sealing seat (215) is provided with a driving groove (401) having a regular hexagonal cross-section; the sealing seat (215) is provided with an annular mounting groove (402); and a magnetic ring (403) is fixedly connected to the interior of the mounting groove (402).

8. The metal hose with a quick connector for construction machinery according to claim 7, characterized in that: A fourth sealing groove (404) is provided on both the male connector housing (202) and the female connector housing (201), a fourth sealing ring (405) is provided inside the fourth sealing groove (404), and an end portion of the sealing seat (215) contacts the fourth sealing ring (405).

9. The metal hose with a quick connector for construction machinery according to claim 5, characterized in that: The regulating structure (3) includes a screw (301) and a slide rod (302), the screw (301) is rotatably connected to the valve core (212), the slide rod (302) is threadedly connected to the screw (301), the slide rod (302) is slidably connected to the valve core (212), the slide rod (302) is fixedly connected to the valve stem (210), a second sealing groove (303) is provided inside the valve core (212), a second sealing ring (304) is fixedly connected inside the second sealing groove (303), the slide rod (302) is slidably connected to the second sealing ring (304), a plurality of guide rods (305) are fixedly connected to the valve stem (210), and the guide rods (305) are slidably connected to the valve core (212).

10. The metal hose with a quick connector for construction machinery according to claim 9, characterized in that: A third sealing groove (306) is provided on the valve core (212) on the female connector housing (201), a third sealing ring (307) is provided in the third sealing groove (306), and the valve core (212) on the male connector housing (202) contacts the third sealing ring (307).

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