A bundled wire threading anti-leakage device

Abstract

The present invention discloses a bundled wire threading anti-leakage device, which includes a joint body, a stacked seal, an intermediate member, an elastic fixing member, a compression screw ring, an elastic compression member, and a hose joint. The joint body, the compression screw ring, and the hose joint are fixedly connected in sequence. The intermediate member and the elastic compression member are fixedly arranged between the joint body and the hose joint in sequence. The intermediate member is provided with an anti-rotation rod and a plurality of intermediate member counterbores. Both ends of the anti-rotation rod are respectively located inside the joint body and the elastic compression member. The elastic fixing members are respectively fixed in the intermediate member counterbores. The elastic fixing members cooperate with the elastic compression member to adaptively compress and fix the cable. The joint body is provided with a plurality of joint counterbores, and the stacked seals are respectively fixed in the joint counterbores. The stacked seal is provided with a wire threading hole, and the elastic compression member is provided with a plurality of wire outlet counterbores. This device solves the technical problems of the existing cable sealing structure, such as large volume, complex installation, poor adaptability to cables, lack of fixed protection measures, the influence of external force pulling on the seal of the cable, and the vulnerability of the cable to damage.

Description

Technical Field

[0001] The present invention relates to the technical field of cable sealing, and in particular to a bundled wire threading anti-leakage device, which is applicable to the sealing and fixing of preventing oil leakage when a cable bundle passes through the bearing box of a rotating machine such as a steam turbine. Background Art

[0002] A large number of sensors for monitoring the operating state of equipment are arranged in the bearing box of a rotating machine such as a steam turbine, such as a speed sensor, a vibration sensor, a displacement sensor, a bearing temperature sensor, etc. The cables of these sensors have two forms. One form is that the end of the cable is a loose wire, and the other form is that the end of the cable is a connector, and the diameter of the connector is significantly larger than the diameter of the cable. Among them, the cables of the bearing temperature and bearing vibration sensors are in the form of loose wires at the end, while eddy current sensors are used for speed, vibration, displacement, etc., and their cables are in the form of connectors to facilitate connection with a preamplifier. The cables of these sensors need to pass through the wire outlet holes on the outer wall of the bearing box. Since the bearing oil return is directly discharged into the bearing box and then discharged back to the oil tank through the oil return pipe, if the oil return is not smooth, it is easy to cause the oil level in the bearing box to rise. At the same time, the rotating parts rotate at a high speed in the bearing box, stirring up and splashing the oil. Therefore, high requirements are imposed on the sealing performance of the sealing structure at the wire outlet hole.

[0003] Based on considerations of space limitation, general and aesthetic unit structure, only a few large holes are generally opened on the side wall of the bearing box, rather than corresponding small holes according to the number of sensor measuring points. Therefore, it is impossible to meet the requirement that each sensor cable passes through a separate wire outlet hole, but a bundled wire outlet is adopted, that is, multiple cables pass through the same wire outlet hole. If no hole separation treatment is carried out in the design of the wire outlet hole sealing structure, the tiny gap between the cables will inevitably cause the oil in the bearing box to seep out along the surface of the cable through this tiny gap due to the capillary tube effect. The external leakage of the oil not only affects the environment but also poses a great potential safety hazard.

[0004] For this reason, the patent document with the publication number of CN205882611U discloses a wire threading anti-leakage superposition device, which adopts a hole separation sealing structure when the cable bundle passes through the hole. This device has a good anti-leakage effect and can effectively prevent the oil from leaking through the wire outlet hole. However, this device simply divides the original wire outlet hole into multiple wire outlet holes through a huge mounting seat, and then seals each wire outlet hole, resulting in a large volume of the sealing device and low on-site installation efficiency. At the same time, it also does not consider technical problems such as that the cable with a terminal connector cannot pass through the sealing ring, the sliding of the cable and the sealing member when the cable is pulled by an external force will affect the sealing effect, and the cable is not protected after wire threading. Summary of the Invention

[0005] The object of the present invention is to provide a bundled wire threading anti-leakage device, which has a compact structure, is easy to install, and has a smaller volume, effectively solving the technical problems of the existing cable sealing structure, such as large volume, complex installation, poor adaptability to end-joint type cables, lack of fixed protection measures, the sealing effect being affected by external pulling of the cable, and the cable being easily damaged due to external factors.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A bundled wire threading anti-leakage device, characterized in that it includes a joint body, a stacked seal, an intermediate member, an elastic fixing member, a compression screw ring, an elastic pressing member, and a hose joint. The joint body, the compression screw ring, and the hose joint are fixedly connected in sequence. The intermediate member and the elastic pressing member are fixedly arranged between the joint body and the hose joint in sequence. The intermediate member is provided with an anti-rotation rod and a plurality of intermediate member sink holes. Both ends of the anti-rotation rod are located in the joint body and the elastic pressing member respectively. The elastic fixing members are respectively fixed in the intermediate member sink holes, and the elastic fixing members cooperate with the elastic pressing member to adaptively compress and fix the cable. The joint body is provided with a plurality of joint sink holes, and the stacked seals are respectively fixed in the joint sink holes. The stacked seal is provided with a wire threading hole, and the elastic pressing member is provided with a plurality of wire outlet sink holes. After the cable enters through the joint sink hole, it sequentially passes through the wire threading hole, the intermediate member sink hole, the elastic fixing member, and the wire outlet sink hole, and then passes through the hose joint.

[0008] The elastic fixing member includes a fixing ring. A plurality of inclined elastic pieces are uniformly arranged on one side of the fixing ring opposite to the elastic pressing member, and an arc-shaped opening is provided at the end of the elastic piece. The elastic fixing member clamps and fixes the cable by the elastic pressing member squeezing the elastic piece to make the arc-shaped opening hold the cable.

[0009] The elastic pressing member includes a pressing plate, a spring, a pressing ring, and a plug. The spring, the pressing ring, and the plug are all hollow structures. The wire outlet sink holes are opened on the pressing plate. The spring and the pressing ring are grouped in pairs and are respectively installed in the wire outlet sink holes through the plug. One end of the pressing ring is integrally formed with a limiting ring that abuts against the spring, and the other end extends out of the plug to adaptively squeeze the elastic fixing member under the action of the spring.

[0010] The pressing ring is formed by buckling two half rings.

[0011] The stacked seal is provided with a concentric cylindrical slit and an axial plane slit. The concentric cylindrical slit takes the center line of the wire threading hole as the axis and penetrates the stacked seal up and down. The axial plane slit penetrates from the outer wall of the stacked seal to the wire threading hole.

[0012] At least two groove rings are provided on the outer wall of the stacked seal.

[0013] The stacked seal is provided with a conical rubber plug for blocking the wire threading hole. The conical rubber plug is provided with a lifting lug for pulling out, and a through hole is provided on the lifting lug.

[0014] The middleware is provided with a boss adapted to the joint counterbore, and the stacked seal is fixed in the joint counterbore through the boss.

[0015] A gasket is further provided in the joint counterbore, and the gasket is located between the stacked seal and the boss.

[0016] Anti-rotation holes are provided in the middle of the joint body and the middle of the elastic pressing member, and both ends of the anti-rotation rod extend into the anti-rotation holes respectively.

[0017] External threads and internal threads are respectively provided at both ends of the joint body, external threads and internal threads are respectively provided at both ends of the pressing screw ring, external threads and connecting parts are respectively provided at both ends of the hose joint. The joint body is fixed in the wire outlet hole of the bearing box through the external thread, the pressing screw ring is fixedly connected with the internal thread of the joint body through the external thread, the pressing screw ring is fixedly connected with the external thread of the hose joint through the internal thread, and the hose joint is externally connected to the metal hose through the connecting part.

[0018] Adopting the above technical solutions, the beneficial technical effects of the present invention are:

[0019] 1. The bundled wire threading anti-leakage device of the present invention is reasonably set and connected and fixed with the joint body, stacked seal, middleware, elastic fixing member, pressing screw ring, elastic pressing member and hose joint, so that the present invention has the advantages of compact structure, simple installation, smaller volume, better fixed sealing effect, etc., effectively solving the technical problems of the existing cable sealing structure with large volume, complex installation, poor adaptability to end-joint type cables, no fixed protection measures, the sealing effect affected by the external force pulling of the cable, and the cable being easily damaged due to external factors. In addition, since the elastic fixing member and the elastic pressing member cooperate to adaptively press and fix the cable, it can not only prevent the cable from sliding with the stacked seal when being pulled by external force, but also automatically adjust the pressing degree to adapt to cables with different wire diameters, thus effectively improving the sealing and fixing effect of the cable and enhancing the adaptability of the device to the cable wire diameter.

[0020] 2. The present invention adopts a fixing ring and elastic pieces inclined on the fixing ring and having an arc-shaped opening in cooperation with an elastic pressing member with a specific structure, which not only makes the overall structure of the device simple, but also makes it have a better adaptive pressing and fixing effect on cables (including cables with different wire diameters).

[0021] 3. The present invention sets the pressing ring to be formed by buckling two half rings, so that after the cable passes through the plug, the pressing ring can be quickly buckled onto the cable, reducing the process of the cable end passing through the pressing ring, which is beneficial to improving the construction efficiency.

[0022] 4. The present invention can take out the concentric cylindrical ring between the concentric cylindrical slit and the wire threading hole through the concentric cylindrical slit, thereby increasing the aperture of the wire threading hole to adapt to cables with different wire diameters. Since the types of sensors are different, the wire diameters of the bundled cables are not exactly the same. Therefore, the concentric cylindrical slit can achieve the sealed wire threading of various cables with different wire diameters, which has stronger practicability. In addition, the axial plane slit facilitates the direct extrusion of the cable into the wire threading hole without threading through the end of the cable, which helps to avoid the situation of fixing failure caused by the mismatch between the end joint of the cable and the wire threading hole.

[0023] 5. The present invention can, when the laminated seal is extruded, form at least two shrinkage rings at the cross-section of the groove ring to tightly hold the cable to achieve sealing through the groove ring.

[0024] 6. The present invention can block the individual wire threading holes without wire outlet through the conical rubber plug to ensure better overall sealing of the device.

[0025] 7. The present invention can stably fix the laminated seal in the counterbore of the joint through the boss, which helps to improve the stability after the cable is fixed.

[0026] 8. When the boss extrudes the laminated seal, the present invention can evenly apply the extrusion force to the laminated seal through the gasket, thereby preventing the wear of the laminated seal.

[0027] 9. The present invention can prevent the intermediate piece and the elastic pressing piece from rotating in the device through the anti-rotation rod and the anti-rotation hole, thereby avoiding the situation of sealing failure caused by the rotation of the cable.

[0028] 10. The present invention connects the joint body, the compression screw ring and the hose joint by means of threaded fixation, which has the advantages of simple connection structure, convenient disassembly and assembly, good fixing effect, and high construction efficiency. Brief Description of the Drawings

[0029] Figure 1 is the schematic assembly structure diagram of the present invention;

[0030] Figure 2 is the schematic three-dimensional structure diagram of the present invention;

[0031] Figure 3 is the schematic three-dimensional sectional structure diagram of the joint body;

[0032] Figure 4 is the schematic three-dimensional sectional structure diagram of the laminated seal;

[0033] Figure 5 is the schematic three-dimensional sectional structure diagram of the intermediate piece;

[0034] Figure 6 is the schematic three-dimensional structure diagram of the elastic fixing piece;

[0035] Figure 7 is a schematic three-dimensional sectional view of the compression screw ring;

[0036] Figure 8 is a schematic three-dimensional sectional view of the elastic compression member;

[0037] Figure 9 is a schematic assembly view of the elastic compression member;

[0038] Figure 10 is a schematic three-dimensional sectional view of the pressure plate;

[0039] Figure 11 is a schematic three-dimensional view of the pressure ring;

[0040] Figure 12 is a schematic three-dimensional sectional view of the plug;

[0041] Figure 13 is a schematic three-dimensional view of the hose connector;

[0042] Figure 14 is a schematic three-dimensional view of the conical rubber plug.

[0043] The markings in the figure are: 1, cable; 2, connector body; 21, connector counterbore; 3, stacked seal; 31, plane slit; 32, concentric cylindrical slit; 33, groove ring; 34, wire threading hole; 4, gasket; 5, intermediate member; 51, intermediate member counterbore; 52, boss; 53, anti-rotation rod; 6, elastic fixing member; 61, fixing ring; 62, elastic piece; 63, arc-shaped opening; 7, compression screw ring; 8, elastic compression member; 81, wire outlet counterbore; 82, pressure plate; 83, spring; 84, pressure ring; 85, plug; 9, hose connector; 91, metal hose; 10, conical rubber plug; 101, lifting lug. Detailed implementation manners

[0044] Embodiment 1

[0045] This embodiment provides a bundled wire threading anti-leakage device, which is installed on the outer side wall of the bearing box of rotating machinery such as steam turbines, and is used to seal the wire outlet hole on the side wall when the cables 1 of various sensors pass through the side wall of the bearing box in a bundled manner to prevent oil leakage. As Figure 1-2 shown, it includes a connector body 2, a stacked seal 3, an intermediate member 5, an elastic fixing member 6, a compression screw ring 7, an elastic compression member 8, and a hose connector 9. The structures, positions, and connection relationships of each component are as follows:

[0046] As Figure 3 , 7, as shown in Fig. 13, the joint body 2, the compression ring 7 and the hose joint 9 are fixedly connected in sequence. Among them, external threads and internal threads are respectively provided at both ends of the joint body 2. The compression ring 7 is of a hollow structure, and external threads and internal threads are respectively provided at both ends thereof. The hose joint 9 has a through hole for the cable 1 to pass through inside, and external threads and a connecting portion for connecting the metal hose 91 are respectively provided at both ends thereof. This connecting portion can be a threaded connection structure or a clamping connection structure, etc. Specifically, a wire outlet hole with an internal thread is provided on the side wall of the bearing box. The external thread of the joint body 2 is matched with the internal thread of the wire outlet hole on the side wall of the bearing box. The specification of this mating thread is M60×1.5, and the two can be matched to realize the fixed connection between the joint body 2 and the side wall of the bearing box. Then, the compression ring 7 is matched with the internal thread of the joint body 2 through the external thread, the compression ring 7 is matched with the external thread of the hose joint 9 through the internal thread, and the hose joint 9 is externally connected to the metal hose 91 through the connecting portion, so as to realize the fixed connection between the compression ring 7 and the joint body 2, the fixed connection between the compression ring 7 and the hose joint 9, and the fixed connection between the hose joint 9 and the metal hose 91. After the joint body 2, the compression ring 7 and the hose joint 9 are fixedly connected into a whole, it is equivalent to the overall shell structure of the bundled wire threading anti-leakage device.

[0047] As Figure 3 shown, an anti-rotation hole (not shown in the figure) and a plurality of joint counterbores 21 for the cable 1 to pass through are provided inside the joint body 2. Among them, the anti-rotation hole is a blind hole and is provided on the axis of the joint body 2. Since the anti-rotation hole mainly functions to prevent rotation, the anti-rotation hole can be other shapes except circular, such as square, triangular, oval, etc. The joint counterbores 21 are uniformly arranged around the anti-rotation hole, and the number thereof is usually 3 - 10, but preferably 6 - 8, so as to realize the bundled wire outlet sealing of multiple cables 1 at one time.

[0048] As Figure 8 shown, an anti-rotation hole (not shown in the figure) and a plurality of wire outlet counterbores 81 are provided on the elastic pressing member 8. The anti-rotation hole is provided on the axis of the elastic pressing member 8 and has the same shape as the anti-rotation hole on the joint body 2. The wire outlet counterbores 81 are uniformly arranged around the anti-rotation hole, and the number thereof is the same as the number of the joint counterbores 21 on the joint body 2.

[0049] The intermediate member 5 and the elastic pressing member 8 are fixedly arranged between the joint body 2 and the hose joint 9 in sequence. Specifically, as Figure 5As shown, the middleware 5 has a circular body, on which there are anti-rotation rods 53, a plurality of bosses 52 and a plurality of middleware counterbores 51. The two ends of the anti-rotation rod 53 protrude from both sides of the body respectively, and the two ends are respectively adapted to the anti-rotation holes on the joint body 2 and the elastic pressing member 8. After fixation, the two ends of the anti-rotation rod 53 are respectively located in the anti-rotation holes of the joint body 2 and the elastic pressing member 8. The middleware 5 and the elastic pressing member 8 cannot rotate under the restriction of the anti-rotation rod 53. The number of bosses 52 and middleware counterbores 51 is the same as the number of joint counterbores 21. Among them, the middleware counterbores 51 are uniformly arranged around the anti-rotation rod 53, and the large-diameter ends of the middleware counterbores 51 face the elastic pressing member 8 ( Figure 1 towards the right as shown). The bosses 52 are respectively arranged corresponding to the small-diameter ends of the middleware counterbores 51 and face the joint body 2 ( Figure 1 towards the left as shown), and their function is to fix the laminated seal 3 in the joint counterbore 21. In addition, the bosses 52 are of a hollow structure and are respectively communicated with the middleware counterbores 51 and the joint counterbores 21 to facilitate the cable 1 to pass through.

[0050] The number of the elastic fixing members 6 is the same as the number of the middleware counterbores 51. Each elastic fixing member 6 is respectively fixed in the middleware counterbore 51, and its function is to cooperate with the elastic pressing member 8 to realize the self-adaptive pressing and fixing of the cable 1.

[0051] It should be noted that in this embodiment, the elastic fixing member 6 and the elastic pressing member 8 cooperate to be able to self-adaptively press and fix the bundled cable 1 passing through the anti-leakage device, avoiding the cable 1 from sliding in the device under the action of external force and affecting the sealing effect. In addition, the structures of the elastic fixing member 6 and the elastic pressing member 8 are not limited in this embodiment, as long as they can play a role in self-adaptively pressing and fixing the cable 1.

[0052] As Figure 4 shown, the laminated seal 3 is made of a soft rubber material such as silica gel. A wire-passing hole 34 penetrating the laminated seal 3 is provided in the middle thereof. The diameter of the wire-passing hole 34 can be 4 mm, and the wire-passing hole 34 is respectively communicated with the internal channels of the joint counterbore 21 and the boss 52. It should be noted that the number of the laminated seals 3 is the same as the number of the joint counterbores 21. Each laminated seal 3 is respectively fixed in the joint counterbore 21 through the boss 52 of the middleware 5; in addition, as Figure 1 、 14 shown, a tapered rubber plug 10 for blocking the wire-passing hole 34 is also provided on the laminated seal 3. When there is a wire-passing through hole on the laminated seal 3 that has not passed the cable 1, the tapered rubber plug 10 can be used for blocking to ensure the sealing effect of the whole device. For the convenience of pulling out the tapered rubber plug 10, a lifting lug 101 for pulling out is also provided on the tapered rubber plug 10, and a through hole is provided on the lifting lug 101.

[0053] After the cable 1 enters through the joint counterbore 21 in this embodiment, it sequentially passes through the wire threading hole 34, the intermediate part counterbore 51, the elastic fixing member 6, and the wire outlet counterbore 81, and then enters the metal hose 91 through the hose joint 9. Specifically, the specific installation process of this embodiment is as follows:

[0054] Install and fix each sensor on the bracket. After the cables 1 of each sensor are clamped at appropriate positions along the inner wall of the bearing housing in the bearing housing, they are led to the wire outlet hole. Screw the external thread of the joint body 2 into the wire outlet hole from the outer wall of the bearing housing. After leading out the cable 1, it sequentially passes through the joint body 2, the stacked seal 3, the intermediate part 5, the elastic fixing member 6, the compression ring 7, the elastic compression member 8, and the hose joint 9, and finally passes through the metal hose 91 to the junction box. Among them, during the installation process, insert the anti-rotation rod 53 of the intermediate part 5 into the anti-rotation hole of the joint body 2. Along the direction of the cable 1 bundle, adjust the tightening degree of the stacked seal 3 by controlling the screwing depth of the compression ring 7 to complete the sealing. Then, put the anti-rotation hole of the elastic compression member 8 on the anti-rotation rod 53 of the intermediate part 5. By screwing the hose joint 9 into the already installed compression ring 7, push the elastic compression member 8 to press the elastic fixing member 6 into the intermediate part counterbore 51, and control the screwing depth of the hose joint 9 to adjust the compression degree of the elastic fixing member 6 to complete the fixing of the cable 1. Finally, snap the metal hose 91 into the hose joint 9, that is, complete the sealing, fixing, and full protection of the bundled cable 1 after passing through the bearing housing. After the cable 1 is sealed and fixed, it penetrates into the metal hose 91, and the cable 1 passes through the metal hose 91 to the junction box, and the full protection prevents damage to the insulation layer of the cable 1 caused by external forces, high temperatures and other factors.

[0055] In addition, when implementing this embodiment, it can be determined whether to block the wire threading holes 34 that do not lead out wires with conical rubber plugs 10 according to the number of cables 1.

[0056] Embodiment 2

[0057] This embodiment provides a bundled wire threading anti-leakage device. In this embodiment, the structures of the elastic fixing member 6 and the elastic compression member 8 are further defined on the basis of Embodiment 1. Specifically as follows:

[0058] As Figures 9-12As shown, the elastic pressing member 8 includes a pressing plate 82, a plurality of springs 83, a plurality of pressing rings 84 and a plurality of plug screws 85. Among them, the springs 83, the pressing rings 84 and the plug screws 85 are all of hollow structures. The anti-rotation hole is opened in the middle of the pressing plate 82. The wire outlet counterbores 81 are evenly opened on the pressing plate 82. One end of the wire outlet counterbore 81 has a diameter of 12 mm, and the other end is provided with an internal thread of the specification M14×1. The plug screw 85 is fixed on the wire outlet counterbore 81 through the internal thread. The springs 83 and the pressing rings 84 are installed in the wire outlet counterbore 81 in pairs through the plug screws 85 respectively, that is, each wire outlet counterbore 81 is provided with a spring 83, a pressing ring 84 and a plug screw 85. One end of the pressing ring 84 abuts against the spring 83, and the other end extends out of the plug screw 85 for adaptively squeezing the elastic fixing member 6 under the action of the spring 83.

[0059] The elastic pressing member 8 has an adaptive pressing function. To make the elastic pressing member 8 have a more stable adaptive pressing effect, in this embodiment, a limiting ring is preferably integrally formed at the end of the pressing ring 84. The outer diameter of the limiting ring is larger than the inner diameter of the plug screw 85. The pressing ring 84 abuts against the spring 83 through the limiting ring. And under the action of the limiting ring, the pressing ring 84 has both a stable adaptive pressing effect and will not fall off from the wire outlet counterbore 81 and the plug screw 85.

[0060] Further preferably, the pressing ring 84 is formed by buckling two half rings, which is convenient for directly buckling the pressing ring 84 on the cable 1 when the cable 1 passes through, without the need to pass through the pressing ring 84 additionally, so as to improve the installation speed.

[0061] As Figure 6 shown, the elastic fixing member 6 includes a fixing ring 61 whose outer diameter is slightly smaller than the outer diameter of the middle member counterbore 51. A plurality of inclined elastic pieces 62 are evenly arranged on one side of the fixing ring 61 opposite to the elastic pressing member 8. The number of the elastic pieces 62 can be 4-6. An arc-shaped mouth 63 for clamping and fixing the cable 1 is provided at the end of each elastic piece 62. Among them, the plurality of inclined elastic pieces 62 are integrally arranged in a conical shape, and the whole formed by the plurality of elastic pieces 62 is coaxial with the fixing ring 61. Then, by squeezing the elastic pieces 62 of the elastic fixing member 6 through the elastic pressing member 8, the arc-shaped mouths 63 of the respective elastic pieces 62 can be made to approach the axis, and further clamp and fix the cable 1 passing through the axis. Since the elastic pieces 62 are evenly arranged on the fixing ring 61, when each cable 1 passes through the elastic fixing member 6, the periphery of the cable 1 will be surrounded and fixed by the arc-shaped mouths 63 of the respective elastic pieces 62 under the action of the elastic pressing member 8, thus solving the problem that the cable 1 slides with the laminated seal 3 under the action of external force pulling, affecting the sealing effect.

[0062] It should be noted that the elastic pressing member 8 has a plurality of wire outlet counterbores 81. The spring 83, the pressing ring 84 and the plug 85 in each wire outlet counterbore 81 are combined into an integral body to correspondingly press an elastic fixing member 6, which can simultaneously press a plurality of elastic pieces 62 on the fixing ring 61 to realize the self-adaptive pressing and fixing of the cable 1. Since the elastic pressing member 8 can form an elastic pressing structure through the built-in spring 83, the function of automatically adjusting the pressing degree of the elastic fixing member 6 to adapt to different wire diameters of the cable 1 is also realized, enhancing the adaptability of the device to the wire diameter of the cable 1.

[0063] The specific installation process of this embodiment is as follows:

[0064] Install and fix each sensor on the bracket. After the cables 1 of each sensor are clamped at appropriate positions along the inner wall of the bearing box and led to the wire outlet hole, screw the external thread of the joint body 2 into the wire outlet hole from the outer side wall of the bearing box. After leading out the cable 1, pass it through the joint body 2, the stacked seal 3, the intermediate member 5, the elastic fixing member 6, the pressing screw ring 7, the plug 85, the spring 83, the pressing plate 82 and the hose joint 9 in sequence, and finally route it through the metal hose 91 to the junction box. Among them, during the installation process, insert the anti-rotation rod 53 of the intermediate member 5 into the anti-rotation hole of the joint body 2, and along the direction of the cable bundle 1, adjust the tightening degree of the stacked seal 3 by controlling the screwing depth of the pressing screw ring 7 to complete the sealing.

[0065] Then hold the cable 1 with the pressing ring 84 composed of two half rings and insert it into the plug 85. By screwing the plug 85 into the pressing plate 82, place the pressing ring 84 and the spring 83 into the wire outlet counterbore 81 to form the elastic pressing member 8. Then, sleeved the anti-rotation hole of the elastic pressing member 8 onto the anti-rotation rod 53 of the intermediate member 5. By screwing the hose joint 9 into the already installed pressing screw ring 7, push the elastic pressing member 8 to press the elastic fixing member 6 into the counterbore 51 of the intermediate member, and control the screwing depth of the hose joint 9 to adjust the pressing degree of the elastic fixing member 6 to complete the fixing of the cable 1. Finally, snap the metal hose 91 into the hose joint 9, that is, complete the sealing, fixing and full protection of the bundled cable 1 after passing through the bearing box.

[0066] Embodiment 3

[0067] In order to further simplify the structure of the anti-leakage device and improve the installation efficiency, on the basis of Embodiment 1 or Embodiment 2, this embodiment further defines the structure of the stacked seal 3. As Figure 4 shown, the stacked seal 3 is provided with concentric cylindrical slits 32 and axial planar slits 31. Among them,

[0068] The number of the concentric cylindrical slits 32 is preferably two. The concentric cylindrical slits 32 are axially centered on the center line of the wire threading hole 34 and penetrate the laminated seal 3 vertically. After the concentric cylindrical slits 32 are opened, two concentric cylindrical rings are formed on the laminated seal 3. When there is a cable 1 with a relatively large wire diameter in the bunching wire threading, the two concentric cylindrical rings can be taken out in sequence to make the diameter of the wire threading hole 34 become 6 mm and 8 mm, so as to adapt to the sealing and fixing of cables 1 with different wire diameters.

[0069] The number of the axial plane slits 31 is one. The axial plane slit 31 penetrates from the outer wall of the laminated seal 3 to the wire threading hole 34. Through the axial plane slit 31, it is convenient to directly squeeze the cable 1 into the wire threading hole 34 without threading the end of the cable 1 into the wire threading hole 34, solving the problem that the end joint of the cable 1 affects the adaptation between the wire threading hole 34 and the cable 1.

[0070] In addition, at least two groove rings 33 are also formed on the outer wall of the laminated seal 3 in this embodiment. The groove rings 33 are evenly arranged up and down on the laminated seal 3. When the laminated seal 3 is squeezed, two shrinkage rings are formed at the cross section of the groove rings 33 to tightly hold the cable 1 to achieve sealing.

[0071] During the bunching wire threading in this embodiment, the cables 1 can be successively clamped into the wire threading holes 34 through the axial plane slits 31 of the corresponding laminated seals 3 without the ends of the cables 1 passing through the wire threading holes 34, thus effectively improving the installation efficiency and simplifying the installation process.

[0072] Embodiment 4

[0073] On the basis of any one of Embodiments 1 - 3, a gasket 4 is further provided in each joint counterbore 21 in this embodiment, and the gasket 4 is arranged between the laminated seal 3 and the boss 52. During installation, the boss 52 of the intermediate member 5 evenly applies pressure to the laminated seal 3 through the gasket 4, thereby preventing the laminated seal 3 from being worn and improving the service life of the laminated seal 3.

[0074] As described above, it is only the specific implementation manners of the present invention. Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features; all the disclosed features, or all the steps in any method or process, except for the mutually exclusive features and / or steps, can be combined in any manner.

Claims

1. A bundled wire threading anti-leakage device, characterized in that: It includes a joint body (2), a stacked seal (3), an intermediate member (5), an elastic fixing member (6), a compression ring (7), an elastic pressing member (8) and a hose joint (9). The joint body (2), the compression ring (7) and the hose joint (9) are fixedly connected in sequence. The intermediate member (5) and the elastic pressing member (8) are fixedly arranged between the joint body (2) and the hose joint (9) in sequence. An anti-rotation rod (53) and a plurality of intermediate member sunk holes (51) are provided on the intermediate member (5). Both ends of the anti-rotation rod (53) are located in the joint body (2) and the elastic pressing member (8) respectively. The elastic fixing members (6) are respectively fixed in the intermediate member sunk holes (51), and the elastic fixing members (6) cooperate with the elastic pressing member (8) to adaptively compress and fix the cable (1). A plurality of joint sunk holes (21) are provided on the joint body (2), and the stacked seals (3) are respectively fixed in the joint sunk holes (21). A wire passing hole (34) is provided on the stacked seal (3). A plurality of wire outlet sunk holes (81) are provided on the elastic pressing member (8). After the cable (1) enters through the joint sunk hole (21), it passes through the wire passing hole (34), the intermediate member sunk hole (51), the elastic fixing member (6) and the wire outlet sunk hole (81) in sequence and then passes out through the hose joint (9).

2. The cluster threading anti-leakage device according to claim 1, characterized in that: The elastic fixing member (6) includes a fixing ring (61). A plurality of inclined elastic pieces (62) are evenly arranged on one side of the fixing ring (61) opposite to the elastic pressing member (8), and an arc-shaped opening (63) is provided at the end of the elastic piece (62). The elastic fixing member (6) clamps and fixes the cable (1) by the elastic pressing member (8) squeezing the elastic piece (62) to make the arc-shaped opening (63) clamp the cable (1).

3. The cluster threading anti-leakage device according to claim 1 or 2, characterized in that: The elastic pressing member (8) includes a pressing plate (82), a spring (83), a pressing ring (84) and a plug (85). The spring (83), the pressing ring (84) and the plug (85) are all of hollow structures. The wire outlet sunk hole (81) is opened on the pressing plate (82). The spring (83) and the pressing ring (84) are grouped in pairs and installed in the wire outlet sunk hole (81) through the plug (85) respectively. A limiting ring abutted against the spring (83) is integrally formed at one end of the pressing ring (84), and the other end extends out of the plug (85) to adaptively press the elastic fixing member (6) under the action of the spring (83).

4. The cluster threading anti-leakage device according to claim 3, characterized in that: The pressing ring (84) is formed by buckling two half rings.

5. A bundled wire threading anti-leakage device according to any one of claims 1, 2 or 4, characterized in that: Concentric cylindrical slits (32) and axial plane slits (31) are formed on the stacked seal (3). The concentric cylindrical slits (32) take the center line of the wire passing hole (34) as the axis and penetrate through the stacked seal (3) up and down. The axial plane slits (31) penetrate from the outer wall of the stacked seal (3) to the wire passing hole (34).

6. The cluster threading anti-leakage device according to claim 5, characterized in that: At least two groove rings (33) are formed on the outer wall of the stacked seal (3).

7. The cluster threading anti-leakage device according to claim 1, wherein: A conical rubber plug (10) for blocking the wire passing hole (34) is provided on the stacked seal (3). A lifting lug (101) for pulling out is provided on the conical rubber plug (10), and a through hole is provided on the lifting lug (101).

8. The cluster threading anti-leakage device according to claim 1, characterized in that: The middleware (5) is provided with a boss (52) adapted to the joint counterbore (21), and the stacked seal (3) is fixed in the joint counterbore (21) through the boss (52).

9. The cluster threading anti-leakage device according to claim 8, characterized in that: A gasket (4) is further provided in the joint counterbore (21), and the gasket (4) is located between the stacked seal (3) and the boss (52).

10. A bundled wire threading anti-leakage device according to claim 1, characterized in that: Anti-rotation holes are provided in the middle of the joint body (2) and the middle of the elastic pressing member (8), and both ends of the anti-rotation rod (53) are respectively inserted into the anti-rotation holes.

Images