Watertight joint pre-tightening device

Abstract

The utility model relates to a watertight joint pre-tightening device which comprises a sleeve, the sleeve comprises a sleeve body, one end of the sleeve body is open and provided with a hole groove matched with a nut of a watertight joint, the cross section of the hole groove is in a regular polygon shape, and the other end of the sleeve body is provided with a bottom plate; the containing cavity is located between the hole groove and the bottom plate; the wire passing hole penetrates through the side wall of the barrel body, and the containing cavity and the hole groove are communicated with the wire passing hole at the same time; the connecting column is located outside the cylinder body and fixedly installed on the bottom plate, and the connecting column is matched with a wrench opening of a wrench; when the hole groove is matched with the nut, the wire harness on one side of the nut penetrates out of the wire passing hole after passing through the containing cavity, and therefore the purpose that the nuts of the watertight connectors which are densely arranged are tightened through a wrench is achieved, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening a measuring wire through a cabin structure, in particular to a watertight joint pre-tightening device. Background Art

[0002] The watertight joint is a commonly used sealing structure for strain measurement wires to pass through the cabin. It consists of a base, a nut, a sandwich kit, a nylon flat washer, etc. The measuring wire passes through the cabin through the small hole on the sandwich kit. The sealing principle is that the nut squeezes the rubber core in the sandwich kit to deform, so that the measuring wire fits tightly with the small hole of the rubber core to achieve a pre-tightened seal.

[0003] At present, the commonly used method in laboratories is the pipe clamp tightening method, which directly tightens the nut through the pipe clamp and rotates the nut to the corresponding pre-tightened state. This method has no major problems in the laboratory, but has great deficiencies in the actual ship test site.

[0004] In actual ship tests, the penetration locations are limited, and a large number of watertight joints are often concentrated on the cover plate of a certain part. In addition, there are a large number of instruments and equipment near the watertight joints on the actual ship, and the operating space of the pipe clamp is greatly limited, which brings inconvenience to the installation of watertight joints. Utility Model Content

[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a watertight joint pre-tightening device, so that the nuts of densely arranged watertight joints can be tightened by using a wrench, which makes the operation more convenient.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A watertight joint pre-tightening device comprises a sleeve,

[0008] The sleeve comprises:

[0009] A cylinder, one end of which is open and provided with a hole groove matching the nut of the watertight joint, the cross section of the hole groove is a regular polygon, and the other end of the cylinder is provided with a bottom plate;

[0010] An accommodating cavity, the accommodating cavity is located between the hole groove and the bottom plate;

[0011] A wire-passing hole, the wire-passing hole passes through the side wall of the cylinder, and the accommodating cavity and the hole groove are simultaneously connected to the wire-passing hole;

[0012] A connecting column, the connecting column is located outside the cylinder and fixedly mounted on the bottom plate, and the connecting column matches the wrench opening of the wrench;

[0013] Wherein, when the hole groove cooperates with the nut, the wiring harness on one side of the nut passes through the accommodating cavity and then passes through the wire hole.

[0014] As a further improvement of the above technical solution:

[0015] The axis of the connecting column coincides with the axis of the hole groove.

[0016] The cross section of the hole groove is a regular hexagon, and the outer hexagonal end of the nut matches the hole groove.

[0017] It also includes a plurality of screws, and the side wall of the hole groove is provided with a plurality of screw holes matched with the screws, and one screw hole corresponds to a plane of the hole groove;

[0018] The heads of the screws are located outside the cylinder, and the ends of the plurality of screws are located inside the cylinder and contact the nuts simultaneously, thereby fixing the cylinder and the nuts together.

[0019] The axis of a single screw hole is perpendicular to the corresponding plane, and the contact surface between the end of the screw and the nut is a plane.

[0020] The connecting column is a polygonal column with a regular polygonal cross section, and the wrench opening is a regular polygonal through hole matching the side wall of the connecting column.

[0021] The polygonal column is a hexagonal column.

[0022] The connecting column is provided with a socket and also includes a pin matched with the socket, and the pin is used to limit the wrench opening between the pin and the bottom plate.

[0023] The axis of the pin is perpendicular to the axis of the connecting column.

[0024] The wrench is a torque wrench.

[0025] The beneficial effects of the utility model are as follows:

[0026] The utility model discloses a screwdriver, a screwdriver, a screwdriver with a screwdriver having a plurality of holes, a plurality of holes for tightening the screwdriver, and a plurality of holes for tightening the screwdriver. The utility model discloses a screwdriver, a screwdriver with a screwdriver having a plurality of holes, a plurality of holes for tightening the screwdriver, and a plurality of holes for tightening the screwdriver. The utility model discloses a screwdriver, a screwdriver with a screwdriver having a plurality of holes, a screwdriver with a plurality of holes, a plurality of holes for tightening the screwdriver.

[0027] The utility model also has the following advantages:

[0028] (1) The torque wrench can quantify the pre-tightening status of all watertight joint nuts by setting a fixed torque to ensure the pre-tightening quality of the watertight joints.

[0029] (2) The nut is clamped from the outer periphery of the sleeve by screws from the side wall of the sleeve so that the nut and the sleeve are fixedly connected. The wrench is limited by a structure that cooperates with a pin and a socket. During the nut pre-tightening operation, the nut, sleeve, and wrench do not separate, which is convenient for operators to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a structural schematic diagram of the sleeve and the connecting column of the utility model.

[0032] Figure 3 This is a schematic structural diagram of the sleeve and the connecting column of the utility model (from another perspective).

[0033] Figure 4 for Figure 3 sectional view of .

[0034] Figure 5 for Figure 4 Bottom view of .

[0035] Figure 6 It is a structural schematic diagram of the wrench of the utility model.

[0036] Figure 7 It is a schematic diagram of the installation method of the watertight joint of the utility model.

[0037] Figure 8 for Figure 7 Cross-sectional view of section AA.

[0038] Fig. 9 It is a schematic diagram of the usage of the utility model.

[0039] Among them: 1. Connecting column; 11. Socket; 2. Pin;

[0040] 3. Sleeve; 31. Cylinder; 311. Hole groove; 312. Screw hole; 32. Wire hole; 33. Bottom plate; 34. Accommodating cavity;

[0041] 4. Nut; 5. Screw; 6. Base; 7. Cover; 8. Sandwich kit; 9. Wrench; 91. Wrench. DETAILED DESCRIPTION

[0042] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.

[0043] Embodiment 1:

[0044] like Figure 1-Figure 4 As shown, the watertight joint pre-tightening device of this embodiment includes a sleeve 3, and the sleeve 3 includes: a cylinder body 31, a receiving cavity 34, a wire hole 32 and a connecting column 1.

[0045] One end of the cylinder 31 is open and is provided with a hole groove 311 matching with the nut 4 of the watertight joint. The cross section of the hole groove 311 is a regular polygon. The other end of the cylinder 31 is provided with a bottom plate 33.

[0046] The accommodating cavity 34 is located between the hole groove 311 and the bottom plate 33;

[0047] The wire hole 32 passes through the side wall of the cylinder 31, and the accommodating cavity 34 and the hole groove 311 are communicated with the wire hole 32 at the same time;

[0048] The connecting column 1 is located outside the cylinder 31 and fixedly mounted on the bottom plate 33. The connecting column 1 matches the wrench opening 91 of the wrench 9, and the axis of the connecting column 1 coincides with the axis of the hole slot 311.

[0049] When the hole groove 311 cooperates with the nut 4 , the wire harness on one side of the nut 4 passes through the accommodating cavity 34 and then passes through the wire passing hole 32 .

[0050] A large number of watertight joints are arranged on the cover plate 7 of a certain part of the bulkhead of the actual ship, such as Figure 7 , Figure 8 As shown, one end of the base 6 of the tubular structure of the watertight joint is fixedly connected to the cover plate 7, and the other end is installed with a nut 4. The nut 4 presses the sandwich set 8 in the base 6 tightly in the base 6, and a plurality of wires are passed through the sandwich set 8. When a pipe clamp is used to rotate one of the nuts 4 to a corresponding pre-tightened state, other nuts 4 nearby will affect the cooperation between the pipe clamp jaws and the nuts 4 and the movement of the handle, and the operating space is limited.

[0051] A sleeve 3 is provided to match the nut 4 of the watertight joint, a receiving cavity 34 and a wire hole 32 for avoiding the watertight joint wiring harness are provided on the sleeve 3, a connecting column 1 is provided to match the spanner 91 of the wrench 9, and the action point of the wrench 9 and the nut 4 is moved to a position above the watertight joint, so that the nuts 4 of densely arranged watertight joints can be tightened by using the wrench 9, which is more convenient to operate and can adapt to the use scenarios where the watertight joints inside the actual ship are concentrated and the operating space is limited.

[0052] The cross section of the hole groove 311 is a regular hexagon, and the outer hexagonal end of the nut 4 matches the hole groove 311 .

[0053] Specifically, one end of the nut 4 is an external hexagonal end, and the other end of the nut 4 is located in the base 6 for pressing the sandwich set 8. The middle part of the nut 4 is provided with an external thread that matches the base 6.

[0054] In addition, since the specifications of the watertight joint are related to the specifications and quantity of the wires in the corresponding cabin, the hole groove 311 of the watertight joint pre-tightening device of this embodiment may not be a standard tightening size. By converting the connecting column 1, the use of the standard tightening specification wrench 9 can be achieved.

[0055] Embodiment 2:

[0056] Since the pre-tightening state of the nut 4 is related to the deformation state of the rubber core in the sandwich core set 8, the process of rotating the nut 4 is a fine adjustment process. The watertight joint pre-tightening device of this embodiment can be fixedly connected with the nut 4, further improving the convenience of the pre-tightening operation of the nut 4, especially when the nut 4 is facing downward, such as Figure 8 As shown, when the nut 4 is facing downward, it is ensured that the nut 4 and the sleeve 3 do not separate during the pre-tightening process of the nut 4.

[0057] The watertight joint pre-tightening device of this embodiment is as follows Figure 1-Figure 5 As shown, it also includes a plurality of screws 5, and the side wall of the hole slot 311 is provided with a plurality of screw holes 312 matched with the screws 5, and one screw hole 312 corresponds to one plane of the hole slot 311;

[0058] The heads of the screws 5 are located outside the barrel 31, and the ends of the multiple screws 5 are located inside the barrel 31 and contact the nut 4 at the same time, so that the barrel 31 is fixedly connected to the nut 4. The nut 4 can be fixedly connected to the sleeve 3 by rotating the screws 5 so that the multiple screws 5 can clamp the nut 4 at the same time, and it is more convenient to tighten the nut 4 indirectly using the wrench 9.

[0059] Further, if Figure 5 As shown, the axis of a single screw hole 312 is perpendicular to the corresponding plane, and the contact surface between the end of the screw 5 and the nut 4 is a plane. After the screw 5 fixes the nut 4 and the sleeve 3, the axis of the nut 4 is consistent with the axis of the connecting column 1, ensuring that the force exerted by the wrench 9 on the nut 4 is perpendicular to the axis of the nut 4, thereby ensuring that the pressure on the rubber core in the sandwich kit 8 is uniform and the deformation of the threading holes in the rubber core is consistent; in addition, when the sizes of different nuts 4 have a certain deviation, the length of the screw 5 extending into the sleeve 3 can also be adjusted to make the same sleeve 3 suitable for nuts 4 of multiple different specifications.

[0060] Further, if Figure 1 , Figure 6 As shown, the connecting column 1 is a polygonal column with a regular polygonal cross section, and the wrench 91 is a regular polygonal through hole matching the side wall of the connecting column 1. The polygonal column is a hexagonal column for easy processing.

[0061] like Figure 1-Figure 4 As shown, the connecting column 1 is provided with a socket 11 and also includes a pin 2 matched with the socket 11, and the pin 2 is used to limit the wrench 91 between the pin 2 and the bottom plate 33. The axis of the pin 2 is perpendicular to the axis of the connecting column 1.

[0062] The wrench 9 is a torque wrench.

[0063] The wrench 9 is specifically a preset torque wrench, which includes a hexagonal wrench opening 91, a torque setting module and a lever arm, and is a commercially available product.

[0064] The nut tightening state of the prior art using the pipe clamp tightening method is not quantifiable and needs to be grasped by experience, which easily causes the pre-tightening state of each watertight joint to be different. These factors are mixed together, which can easily lead to leakage of watertight joints due to inadequate pre-tightening, which will interfere with the watertight inspection of the entire ship and affect the quality of the actual ship test. The wrench 9 of this embodiment has a torque setting function, which can uniformly quantify the pre-tightening state of the nut 4, effectively standardize the pre-tightening operation process of the nut of the actual ship test watertight joint, and ensure the watertightness of the test measurement wire through the cabin.

[0065] In addition, a ratchet structure is provided at the wrench opening 91. When a nut 4 is pre-tightened, the wrench opening 91 is limited by the structure of the pin 2 and the socket 11. When the nut 4 is facing downward, the wrench 9 is ensured not to be separated from the connecting column 1, which is convenient for the operator to operate. Figure 7-Figure 9 shown.

[0066] The main process of using the watertight joint pre-tightening device of this embodiment is as follows:

[0067] The measuring wire is passed through the cabin and led out through the sandwich set 8, and then the sandwich set 8 is placed in the base 6, and then the nut 4 of the watertight joint is aligned with the thread of the base 6 and manually screwed on.

[0068] Assemble the hole groove 311 of the sleeve 3 with the nut 4 of the watertight joint, tie the measuring wire, and lead it out from the wire hole 32 on the sleeve 3.

[0069] Five screws 5 are respectively installed in the screw holes 312 of the sleeve 3 and tightened to securely fix the sleeve 3 and the watertight joint nut 4.

[0070] According to the actual situation on the actual ship, adjust the direction of the lever arm of the wrench 9 and install the wrench 9 so that the lever arm has a better operating space.

[0071] Insert the pin 2, fix the sleeve 3 and the wrench 9, and pre-tighten the nut 4 into place according to the preset torque.

[0072] After the nut 4 is pre-tightened, the removal of the watertight joint pre-tightening device can be carried out in the reverse process of the above process.

[0073] The pre-tightening quality of the nut 4 is an important part of the effective sealing of the watertight joint. This embodiment can effectively solve the problems of concentrated watertight joint arrangement and limited on-site operation space in actual ship tests by fixing the sleeve 3 on the nut 4 of the watertight joint. The torque wrench can quantify the pre-tightening status of all watertight joint nuts 4 by setting a fixed torque to ensure the pre-tightening quality of the watertight joint.

[0074] The watertight joint pre-tightening device of this embodiment adopts screws 5 to clamp the nut 4 from the outer periphery from the side wall of the sleeve 3, so that the nut 4 is fixedly connected to the sleeve 3, and the spanner 91 is limited by the structure of the pin 2 and the socket 11. During the pre-tightening operation of the nut 4, the nut 4, the sleeve 3, and the spanner 9 do not disengage, which is convenient for the operator to operate.

[0075] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A watertight joint pre-tightening device, characterized in that: comprising a sleeve (3), The sleeve (3) comprises: A cylinder (31), one end of which is open and provided with a hole groove (311) matching the nut (4) of the watertight joint, the cross section of which is a regular polygon, and the other end of which is provided with a bottom plate (33); an accommodating cavity (34), the accommodating cavity (34) being located between the hole groove (311) and the bottom plate (33); A wire-passing hole (32), wherein the wire-passing hole (32) penetrates the side wall of the cylinder (31), and the accommodating cavity (34) and the hole groove (311) are simultaneously connected to the wire-passing hole (32); A connecting column (1), the connecting column (1) is located outside the cylinder (31) and is fixedly mounted on the bottom plate (33), and the connecting column (1) matches the spanner opening (91) of the spanner (9); When the hole groove (311) cooperates with the nut (4), the wire harness on one side of the nut (4) passes through the accommodating cavity (34) and then passes through the wire hole (32).

2. The watertight joint pre-tightening device according to claim 1, characterized in that: The axis of the connecting column (1) coincides with the axis of the hole groove (311).

3. The watertight joint pre-tightening device according to claim 1, characterized in that: The cross section of the hole groove (311) is a regular hexagon, and the outer hexagonal end of the nut (4) matches the hole groove (311).

4. The watertight joint pre-tightening device according to claim 1, characterized in that: It also includes a plurality of screws (5), and the side wall of the hole groove (311) is provided with a plurality of screw holes (312) matched with the screws (5), and one screw hole (312) corresponds to a plane of the hole groove (311); The heads of the screws (5) are located outside the cylinder (31), and the ends of a plurality of the screws (5) are located inside the cylinder (31) and contact the nuts (4) at the same time, thereby fixing the cylinder (31) and the nuts (4) in connection.

5. The watertight joint pre-tightening device according to claim 4, characterized in that: The axis of a single screw hole (312) is perpendicular to the corresponding plane, and the contact surface between the end of the screw (5) and the nut (4) is a plane.

6. The watertight joint pre-tightening device according to claim 1, characterized in that: The connecting column (1) is a polygonal column with a regular polygonal cross section, and the wrench opening (91) is a regular polygonal through hole matching the side wall of the connecting column (1).

7. The watertight joint pre-tightening device according to claim 6, characterized in that: The polygonal column is a hexagonal column.

8. The watertight joint pre-tightening device according to claim 6, characterized in that: The connecting column (1) is provided with a socket (11) and also includes a pin (2) matched with the socket (11), wherein the pin (2) is used to limit the opening (91) between the pin (2) and the bottom plate (33).

9. The watertight joint pre-tightening device according to claim 8, characterized in that: The axis of the pin (2) is perpendicular to the axis of the connecting column (1).

10. The watertight joint pre-tightening device according to claim 1, characterized in that: The wrench (9) is a torque wrench.

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