45results about How to "Achieve multiple seals" patented technology

The invention discloses a water-proof sealing cover for a stay cable or a lifting rod. The water-proof sealing cover comprises a fixing sleeve, sealing rubber, a compression ring and a corrugated sealing sleeve, wherein the fixing sleeve, the compression ring and the sealing rubber are integral structures or two-half structures; the corrugated sealing sleeve is the integral structure or the two-half structure; during use, the corrugated sealing sleeve with the two-half structure is connected into a whole through a bolt; and the sealing rubber is arranged between the fixing sleeve and the compression ring. Through pre-tensioning force between the fixing sleeve and the compression ring, the sealing rubber is tightly clamped in a cable body, so that the fixing sleeve, the compression ring and the sealing rubber are fixed with the cable body and then are connected with a pre-embedded pipe through the corrugated sealing sleeve. The corrugated sealing sleeve has a plurality of degrees of freedom, the influence of constraint on the cable body is relatively low, and a relatively good sealing effect can be achieved. Furthermore, due to the special structure of the corrugated sealing sleeve, the problem that the water-proof cover cannot be mounted or a using effect cannot be achieved after the water-proof cover is mounted because the cable body is not in the middle of the pre-embedded pipe during practical mounting is solved.

The invention relates to the technical field of hydrogen energy storage, in particular to an ultra-high pressure hydrogen storage container. The ultra-high pressure hydrogen storage container comprises a double-layer cylinder body, cover bodies arranged on the two sides of the cylinder body, and a self-tightening sealing assembly for connecting the double-layer cylinder body and the cover bodies at two ends, wherein the inner layer of the double-layer cylinder body is used for inhibiting the hydrogen atom penetration, and the outer cylinder body is used for ensuring the strength of the cylinder body, and a leakage hole is formed in the outer cylinder body of the double-layer cylinder body. The ultra-high pressure hydrogen storage container has the advantages that a double-layer structure is arranged, different effects are achieved by two layers, the leakage hole can release hydrogen under the condition of exceeding the set pressure to prevent the explosion of the container, and the safety performance of an ultra-high pressure hydrogen storage tank is greatly improved.

The invention discloses an energy storage device. The energy storage device comprises a shell, a battery core, an anode inner terminal, a cathode inner terminal, a cathode outer terminal and electrolyte, wherein the anode inner terminal and the cathode inner terminal are respectively welded on the end surfaces of an anode and a cathode of the battery core, and the periphery of the anode inner terminal is inserted in an annular groove on the bottom wall of the shell; a welding seam is formed in a way that the cathode inner terminal and the cathode outer terminal are welded together, an O-shaped sealing ring can cover the welding seam, and a roll rim at the opening part of the shell is pressed on the cathode outer terminal through an annular sealing washer; an upper annular side bulge and a lower annular side bulge, which face the inner part of the shell and have pressing functions, are respectively arranged in the positions, which correspond to the cathode inner terminal and the anode inner terminal, on the side wall of the shell. The invention also discloses an assembling method of the energy storage device. The energy storage device disclosed by the invention has the advantages that the stability is good, the resistance is low, and the reliability is good; the structure is simple, the machining and forming cost is low, and the assembling is easy.

The invention provides a worm gear reducer, belongs to the technical field of mechanisms, and aims at solving the problems of poor adjusting accuracy and liable abrasion of an existing worm gear reducer. The worm gear reducer comprises a housing which is provided with a shaft hole, a worm gear, a worm, an adjusting sleeve, a locking sleeve and a first locking bolt, wherein the adjusting sleeve is connected into the locking sleeve through threads; the locking sleeve is arranged at the end part, close to the output end of the worm, of the housing; the output end of the worm is axially fixed into the adjusting sleeve; the inner end of the locking sleeve is arranged in the shaft hole by sliding and penetrating, and the outer end of the locking sleeve is provided with a convex annular convex edge part; a bolt rod of the first locking bolt penetrates through the annular convex edge part to be connected to the housing through the threads; the annular convex edge part is compressed to the housing through a head part of the first locking bolt. According to the worm gear reducer, the locking sleeve and the adjusting sleeve are matched in a pressing and pushing manner, so that thread gaps between the locking sleeve and the adjusting sleeve can be removed; the thread gaps in the first locking bolt are nearly ignored; the adjusting accuracy is high, and thus the abrasion of the worm gear can be reduced.

The invention discloses a vortex shedding flowmeter which comprises a measuring pipe with a flow channel, a connecting rod arranged on the measuring pipe and a vortex street flow converter arranged onthe connecting rod. A detection probe extending into the flow channel is mounted in the measuring pipe; a main installation groove is formed in a wall of the flow channel, an annular vibration reduction rubber ring is arranged in the main installation groove, an annular first installation groove is formed in the inner circumferential wall of the vibration reduction rubber ring, a vortex generatoris arranged in the first installation groove, and an adjusting assembly used for adjusting the vibration reduction grade of the vibration reduction rubber ring is arranged on the vibration reductionrubber ring. The vortex shedding flowmeter can be used for preventing vibration, and therefore accuracy of detection data is ensured.

The invention provides a mechanical follow-up sealing device. The mechanical follow-up sealing device is arranged between a moving component and a fixed component which are oppositely arranged and is used for sealing the moving component and the fixed component. The mechanical follow-up sealing device comprises a driving steel plate connected with the moving component and a follow-up steel plate connected with the fixed component; the follow-up steel plate can swing along with the follow-up steel plate; and the follow-up steel plate is attached to the driving steel plate to form maze sealing with the driving steel plate to seal the moving component and the fixed component. The mechanical follow-up sealing device achieves multiple sealing and multiple following and can effectively reduce the air leakage rate between the moving component and the fixed component.

The invention relates to the technical field of electrical equipment, in particular to a wire harness wall-passing structure and an installation method thereof. The wire harness wall-passing structurecomprises a sleeve, a pouring sealant and at least one sealing plug, the casing pipe is alternately filled with the pouring sealant and the sealing plug in the axis direction of the casing pipe; thesealing plug is provided with at least one first through hole, and a wire harness can penetrate through the pouring sealant and the first through hole of the sealing plug. According to the wire harness wall-passing structure, the casing pipe is filled with the pouring sealant and the sealing plug, so that multi-stage sealing and multi-time sealing of the wire harness are achieved, the sealing performance of the wall-passing structure is greatly improved, and the wire harness wall-passing structure is more suitable for fixing devices such as a high-pressure container.

The invention relates to a power battery pack thermal management system air tightness detection tool and detection system. The detection tool comprises a vent rod, a swelling rod and an elastic swelling part; and the elastic swelling part is arranged on the outer side wall of one end of the vent rod in a sleeving mode, the swelling rod is connected to the outer side wall of the middle of the ventrod in a threaded mode, and one end of the swelling rod is arranged to be close to the elastic swelling part. According to the air tightness detection tool, by arranging the elastic swelling part on the outer side wall of the vent rod, a connection piece can achieve seal connection with a power battery pack management system through the elastic swelling part when being connected to the power battery pack management system, and the detection tool is simple in structure and convenient to operate and maintain.

The invention discloses an underfloor heating floor with a rapid heating function. The underfloor heating floor comprises a substrate, wherein a panel is arranged on the substrate; the substrate comprises a plate body; a cable trough is arranged on the upper surface of the plate body; a heating cable is arranged in the cable trough; and the thickness ratio of the substrate to the panel is 1:(2-3).A production process of the underfloor heating floor comprises the following steps: A, arranging the cable trough on the upper surface of the plate body by utilizing an engraving machine, arranging end head placement ports at two ends of the cable trough, and arranging a cable winding column on the cable trough, so as to obtain the substrate; B, embedding the heating cable in the cable trough andpositioning cable lugs in the end head placement ports; and C, gluing the panel on the substrate, so as to obtain a finished product. The underfloor heating floor disclosed by the invention has the characteristics that the laying operation is convenient and the floor heating speed can be effectively improved.

The invention provides a pre-ash bucket sealing method, and relates to the field of alkali making equipment. The pre-ash bucket sealing method comprises a pre-ash bucket sealing device, the pre-ash bucket sealing device comprises a sealing flange connected with a bucket cover of a pre-ash bucket, an upper sealing cylinder and a lower sealing cylinder are fixedly arranged on the sealing flange, theupper sealing cylinder is arranged above the bucket cover of the pre-ash bucket, and the lower sealing cylinder extends into the pre-ash bucket; a stirring shaft in the pre-ash bucket penetrates through the upper sealing cylinder and the lower sealing cylinder; a stuffing box is arranged between the upper sealing cylinder and the stirring shaft; a sleeve is arranged below the lower sealing cylinder, a spacer bush rotationally sleeving the stirring shaft is arranged in the sleeve, and the spacer bush is filled with adsorption filler; a sealing ring sleeves outside the spacer bush, a pressing plate is arranged at the top of the spacer bush, a lantern ring is arranged at the lower part of the pressing plate, a sealing liquid channel is formed among the lantern ring, the bottom of the lower sealing cylinder, the sealing ring and the pressing plate, the sealing liquid channel is communicated with an inner cavity of the upper sealing cylinder to form a liquid sealing cavity, and sealing liquid fills the liquid sealing cavity; and the sealing liquid is a mixed solution of grease and crushed filler. The pre-ash bucket is good in sealing performance and greatly reduces the cost.

Disclosed is a novel sealing device of a belt conveyor roller shaft under anti-corrosion and dust-proof special working conditions. The novel sealing device includes a roller and the roller shaft. A left first connecting seat and a right first connecting seat are of the same structure and in bilateral symmetry. The right first connecting seat includes an inner end cover and a first bearing seat which are installed from left to right in sequence in the axial direction. The first bearing seat is provided with a first bearing installation part and a first sealing part from left to right in sequence in the axial direction. The first sealing part is provided with a first magnetorheological fluid curve sealing structure. The left and right ends of the roller shaft are provided with a left secondconnecting seat and a right second connecting seat separately. The right second connecting seat includes a second bearing seat and a bearing end cover. The second bearing seat is provided with a second sealing part and a second bearing installation part from inside to outside in sequence in the axial direction. The second sealing part is provided with a second magnetorheological fluid curve sealing structure. According to the novel sealing device, by using the magnetorheological fluid curve sealing structures, contact sealing is changed into non-contact sealing; the fact that wear of a sealing piece affects the sealing effect of the roller shaft is avoided; and the service life of the roller shaft is prolonged.

The invention discloses a waterproof plug, which can be inserted into a socket to supply power to a light fixture. The waterproof plug comprises a housing and multiple conducting strips, wherein the housing includes an end surface and a sidewall, and the conducting strips are fixed to the housing and exposed out of the end surface. The end surface comprises at least one ring of a first projection which surrounds the conducting strips, and the sidewall comprises at least one ring of a second projection which surrounds the sidewall. The first and second projections are used for sealing a combination surface between the waterproof plug and the socket to prevent water from entering the socket. According to the waterproof plug, the at least one ring of the first projection of the end surface and the at least one ring of second projection of the sidewall are used to realize multilevel sealing between the waterproof plug and the socket, thereby preventing water from entering the socket. The invention also provides a connector.

The invention provides a high pressure seal examining device which comprises an oil suction pipe, a first cup rubber sleeve, a sealing flange plate, a fixed block and a linking sleeve, two transmission columns, two connecting rods, two limiting arc-shaped blocks, an outer sleeve, a transmission pipe and two limiting sleeve blocks. The transmission pipe is provided with two semi-circumferential spiral slots, two limiting slots are formed in the limiting sleeve block, the rotating transmission columns enter the spiral slots to drive the transmission pipe to rotate, the rotating limiting arc-shaped blocks enter into the limiting slot in one limiting sleeve block to rotate and slide out from the limiting slot on the other limiting sleeve block to fix the transmission pipe. The high pressure seal examining device also comprises a connecting pipe and an inner sleeve. The inner sleeve is provided with a first rinsing slot, and the outer sleeve is provided with a second rinsing slot. The highpressure seal examining device also comprises a rubber sleeve supporting rack. A second cup rubber sleeve is fixedly mounted on the rubber sleeve supporting rack. The high pressure seal examining device is simple in structure and relatively low in cost.

The invention discloses a sealed water pipe connecting mechanism. The sealed water pipe connecting mechanism comprises a water pipe joint; a metal embedding pipe is fixedly arranged in a water pipe positioning hole of the water pipe joint in a sleeving mode; an internal screw thread is disposed on the inner wall of the metal embedding pipe. The sealed water pipe connecting mechanism is characterized in that the water pipe positioning hole is a stepped hole; the inner diameter of a small hole of the stepped hole is smaller than that of the metal embedding pipe to form a sealed step; a seal ring is disposed on the inner wall of the upper end port of the metal embedding pipe; the inner diameter of the upper end of the seal ring is equal to that of the internal screw thread; the inner diameter of the lower end of the seal ring is smaller than that of the internal screw thread; the inner diameter of the seal ring is in smooth transition from bottom to top. The sealed water pipe connecting mechanism has the beneficial effects that the structure is simple; dismounting is convenient; multiple sealing between the metal embedding pipe and the pipe joint and between the metal embedding pipe and an external pipe is achieved; the sealing effect is greatly improved; meanwhile, the anti-seismic property of the pipe connecting structure is improved.

The invention discloses a sectional type heat exchange tube assembling device. The sectional type heat exchange tube assembling device comprises tube plates, baffle plates, heat exchange tubes, a clamping convex short tube and an internal thread short tube, wherein the baffle plates at least comprise a baffle plate A, a baffle plate B and a baffle plate C; the heat exchange tubes at least comprisea middle section tube, a front section tube and a rear section tube, and the front section tube and the rear section tube are fixedly connected with the tube plate; and the clamping convex short tubecomprises a front external thread section, a rear external thread section and a middle section connected with the front external thread section and the rear external thread section into a whole, andthe front external thread section, the rear external thread section and the middle section are all two semicircular pipes. According to the sectional type heat exchange tube assembling device, multi-section type assembly of the heat exchange tubes can be achieved, the problem that tube penetrating is strenuous is solved, meanwhile, the heat exchange tubes with expansion joints can be detached oneby one for deep cleaning during cleaning, meanwhile, a part of the corroded heat exchange tubes can be detached for replacement, the heat exchange tubes can continue to be prolonged, and the heat exchange efficiency is improved.

The invention provides a cross universal joint. The cross universal joint comprises a universal joint body, a bearing outer ring, a roller pin, an outer oil seal, an inner oil seal, a compensation oil seal, a pressing threaded sleeve and an oil storage cavity, wherein the outer oil seal is installed on a universal joint head, the inner oil seal is installed on the inner side of the bearing outer ring, the compensation oil seal is arranged between the outer oil seal and the inner oil seal, one side of the outer oil seal abuts against a first stepped groove in the universal joint head, the other side of the outer oil seal abuts against the compensation oil seal, the pressing threaded sleeve is in threaded connection with the bearing outer ring and used for driving the compensation oil seal to press against the outer oil seal, an outer ring of the inner oil seal is arranged in a second stepped groove in the bearing outer ring in a clamped mode, an inner ring of the inner oil seal abuts against the outer wall of the universal joint head, the oil storage cavity is formed in the universal joint body, and an oil guide channel communicating with the oil storage cavity is formed in the universal joint head and used for guiding lubricating oil into the roller pin in the bearing outer ring. Through cooperation of the outer oil seal, the inner oil seal and the compensation oil seal, multiple sealing is achieved, dust can be effectively prevented, and leakage of internal lubricating grease is avoided.

A complete set of high-safety waterproof low-voltage switchgear, including a switchgear door panel, a switchgear cabinet body and a switchgear door frame, a first seal is provided on the switchgear door frame, a second seal is provided on the switchgear door panel; the first seal The first rubber strip made of rubber elastic body and the second rubber strip made of rubber elastic body are arranged on the part; the third rubber strip made of rubber elastic body is arranged on the second sealing part; The observation window includes a glass plate and a reinforcement plate from the inside to the outside. There are multiple observation holes on the reinforcement plate. Three different sealing strips are used to cooperate with each other to achieve multiple seals and effectively ensure its sealing and waterproof performance. The special observation window design uses a reinforced guard plate outside the glass, and adopts a number of regular hexagonal observation holes to enhance the protection performance and allow normal observation at the same time.

The invention provides a mechanical follow-up sealing device. The mechanical follow-up sealing device is arranged between a moving component and a fixed component which are oppositely arranged and is used for sealing the moving component and the fixed component. The mechanical follow-up sealing device comprises a driving steel plate connected with the moving component and a follow-up steel plate connected with the fixed component; the follow-up steel plate can swing along with the follow-up steel plate; and the follow-up steel plate is attached to the driving steel plate to form maze sealing with the driving steel plate to seal the moving component and the fixed component. The mechanical follow-up sealing device achieves multiple sealing and multiple following and can effectively reduce the air leakage rate between the moving component and the fixed component.

The invention relates to the technical field of ball valve sealing devices and in particular to a dual-material multi-protection sealing mechanism of a ball valve. The dual-material multi-protection sealing mechanism of the ball valve comprises an annular sealing valve seat and a soft sealing assembly mounted on the annular sealing valve seat. The soft sealing assembly is provided with a soft sealing surface for matching with a spherical surface of the ball valve. The dual-material multi-protection sealing mechanism of the ball valve is characterized in that at least one first rigid sealing ring is mounted on the annular sealing valve seat. Due to implementation of the above technical solution, the dual-material multi-protection sealing mechanism of the ball valve realizes dual-material multi-seal of the ball valve by means of independent designs of the soft sealing assembly and the first rigid sealing ring. By means of complementary effects, the reliability of seal for coping with the case of a medium containing small particles is improved. Each seal has independent integrity, thereby enhancing the replaceability of the present invention. Besides, a first dusting scraper adjacent to a first rigid sealing surface is capable of effectively removing scale and particles covering the spherical surface of the ball valve to ensure formation of an effective sliding seal pair on the soft sealing surface, the rigid sealing surface and the spherical surface of the ball valve, thus improving the sealing property and prolonging the service life.

A multiple-sealing full-welding pipeline ball valve comprises a valve ball (5), a valve body (7) and a valve rod (10), wherein the valve body (7) adopts a spherical structure and is formed through hot forging of a left valve body and a right valve body, and the middle is formed through singe-welding-seam welding; supporting legs (3) are arranged at the lower part of the valve body (7); the valve ball (5) adopts a supporting type and is supported by an upper supporting seat and a lower supporting seat; multiple-sealing structures are arranged on a valve seat; first sealing is realized at a soft seal (A-2) before the valve, and second sealing is realized at a soft seal (A-1); and a pre-tightening spring (A-4) is preset at the valve seat.

The invention relates to a high-temperature disinfection cabinet for the ultrasonic department. The high-temperature disinfection cabinet comprises a bottom support and a gas module arranged on the bottom support; a water tank is arranged on the gas module; the top part of the water tank is connected with steam conveying pipes; the steam conveying pipes are connected with a distribution pipe; the distribution pipe is connected with a heating pipe for heating a steam cabinet on the support; and the heating pipe can provide high-temperature steam with temperature exceeding 100 DEG C. According to the high-temperature disinfection cabinet, a high-temperature steam generator is provided with the heating pipe, and steam can be heated twice by a heating core when passing through an inner pipe of the heating pipe, so that the steam can reach higher temperature; the steam can also be heated and subjected to heat preservation for three times through the inner wall after passing through vent holes, so that the steam can reach higher temperature; and a double-layer heating structure can fully absorb and utilize heat generated by a steam heater, so that the purpose of saving more energy is achieved.

The automobile sealing strip assembly with the self-pressing function comprises a sealing strip body and is characterized in that two sets of bent supporting frames are symmetrically arranged in the sealing strip body, the supporting frames are elastic, the two ends of each supporting frame tilt upwards, a jacking block is arranged on the inner top of the sealing strip body, and the jacking block is connected with the supporting frames. The bottom surface of the jacking block is provided with a concave guide surface, so that the top surface of the jacking block is high in the middle and low in two sides; a first protruding part and a second protruding part are arranged on the two sides of the top of the sealing strip body respectively, a third protruding part is arranged between the first protruding part and the second protruding part, and the jacking block is located behind the third protruding part. According to the sealing strip assembly, in the process that the second plate is close to the first plate, the pressure of the second plate on the first protruding part and the second protruding part and the pressure of the third protruding part on the second plate interact and react, so that the sealing strip assembly can automatically press the second plate, multiple sealing is achieved, and the better sealing effect is achieved.

The invention discloses a power battery and a car with the same. The power battery comprises a battery box, a fixing plate, a fixing part, a fastening part, a battery module and a sealing strip, wherein the battery box comprises a lower box body and an upper cover, the lower box body comprises a plurality of mounting plates, a cavity is defined in at least one of the mounting plates, and the mounting plate is provided with an assembling hole; the fixing plate is fixed in the cavity; the fixing part and the fixing plate are made of the same material and connected through welding; the fastening part penetrates the upper cover and the assembling hole to be connected with the fixing part; the sealing strip is arranged between the upper cover and the lower box body to seal the gap between the upper cover and the lower box body, the sealing strip comprises a body, at least two upper support feet and at least two lower support feet, the upper support feet are respectively abutted against the upper cover, and the lower support feet are respectively abutted against the battery box. The power battery is simple in structure, lightweight, low in cost, reliable in part connection, convenient to mount and demount, good in sealing performance and high in use reliability.

The invention provides a cooling tower. The cooling tower comprises a cooling tower main body, an enclosure unit and first sealing pieces, wherein the cooling tower main body comprises a plurality of purline structures, and the purline structures are annularly distributed and extend along the height direction; the enclosure unit is annularly arranged along the cooling tower main body and at least distributed on the inner side of the cooling tower main body, the enclosure unit comprises a plurality of enclosure panels, and the adjacent enclosure panels are fixed in the circumferential direction and are assembled and connected layer by layer in the height direction; and the first sealing pieces are arranged on the sides, back on to the cooling tower main body, of the adjacent enclosure panels, and are suitable for covering and sealing gaps between profiling panels. By arranging the first sealing pieces, the enclosure panels are supplemented and sealed, the cooling tower main body is prevented from being rusted, the service life and the enclosure period of the cooling tower are prolonged, the enclosure panels can also be reinforced, the strength of the enclosure panels is improved, and the stability of the sealing performance of the cooling tower is guaranteed.

The invention discloses an explosion-proof capacitor, which comprises a shell, an explosion-proof end cover, a positive electrode pin and a negative electrode pin, wherein two vertical core rods and polypropylene film layers are arranged in the shell; each polypropylene film layer is wound outside the corresponding core rod; two mounting holes are symmetrically formed in the explosion-proof end cover; and the positive electrode pin and the negative electrode pin pass through the two mounting holes in the explosion-proof end cover and are connected with a positive electrode wiring and a negative electrode wiring respectively. The explosion-proof capacitor is simple in structure and multi-sealed; the problem that a solder joint is easily affected by the temperature in a traditional welding sealing technology is solved; mounting and stamping of elements are facilitated by a connecting hole with a waist-shaped structure; loss of the capacitor in the operating process is reduced through an arranged insulating sleeve; various electrical properties of the capacitor are improved; the service lifetime of the capacitor is prolonged; and the capacitor can be safe, explosion-proof and safe to use through arranged explosion-proof end cover and explosion-proof plate.

The invention discloses a disposable automatic liquid stopping infusion set and a manufacturing method thereof. The infusion set comprises a safety mechanism, the safety mechanism comprises a shell and a buoy located in the shell, the shell comprises at least one liquid medicine outlet, the inner lower end of the shell is a connecting end, the connecting end is provided with a through hole, liquid medicine flows through the through hole, the connecting end is protruded out of the liquid medicine outlets of the shell, a U-shaped portion is arranged below the buoy, a sealing cap is arranged in the U-shaped portion and comprises a cap top and an annular cap body, one end of the annular cap body is sealed via the cap top while the other end of the annular cap body is an opening end, the opening direction of the annular cap body is opposite to an inwards concave direction of the U-shaped portion, and the diameter of an opening of the annular cap body is larger than that of the connecting end. The disposable automatic liquid stopping infusion set aims to realize that automatic sealing of an infusion pipeline can be ensured when infusion bottles are replaced and infusion is about to be finished by the aid of multiple times of sealing, on the basis that air is assuredly prevented from entering the body of a patient, reliability of sealing of the infusion pipeline is improved, and safety is further enhanced.

The invention relates to a sealing, locking and grounding structure at a wire inlet of a non-explosion-proof motor junction box. The sealing, locking and grounding structure mainly comprises a cable,an elastic sealing ring, a clamping groove, a junction box seat, a junction hopper and the like. Reserved holes are formed in the elastic sealing rings, the elastic sealing rings are installed in theclamping grooves, the clamping grooves are embedded in reserved spigots of the junction box base, the junction hopper is screwed on the junction box base, and a cable is connected with the wiring terminals in the junction box base through the junction hopper and the elastic sealing rings. According to the product, the original junction box mold is not changed, and on the premise that the sealing,locking and armored grounding functions of an original cable waterproof joint are ensured, the elastic sealing ring installed inside the junction box and the clamping device installed outside the junction box are combined to achieve the structure of the sealing, locking and grounding functions. The sealing, locking and grounding structure is low in production cost and high in universality, can meet the requirement for cable inlet of rubber jackets, steel cloth, armored rubber jackets and armored steel cloth cables at the same time through one structure, improves the working efficiency, and ishigh in operability.