CN112152181A

CN112152181A - Automatic locking stuffing box

Info

Publication number: CN112152181A
Application number: CN202010863519.8A
Authority: CN
Inventors: 周驰; 张文亮; 万志辉; 白福余
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2020-12-29
Anticipated expiration: 2040-08-25
Also published as: CN112152181B

Abstract

The utility model provides an automatic locking stuffing box belongs to sealing device technical field. The cable fixing ring is sleeved and fixed on the cable, meanwhile, the cable extends into a cable inserting hole in the mounting frame which is arranged at an interval with the cable fixing ring, and the mounting frame is fixed in position. The cable and the cable fixing ring are continuously pushed to move relative to the mounting frame along the axis of the cable fixing ring, and the traction rod is pulled by the cable fixing ring to pull the two sliding blocks to move. The first sealing element and the second sealing element of the sealing mechanism respectively connected with the two sliding blocks are close to each other along with the approach of the two sliding blocks, and the first semicircular cable groove and the second semicircular cable groove are finally closed to seal the cable between the first sealing element and the second sealing element. When the first sealing element and the second sealing element of the automatic locking stuffing box are fastened, extra fasteners and operation space are not needed, and the sealing of the cable can be rapidly completed in a narrow space.

Description

Automatic locking stuffing box

Technical Field

The disclosure relates to the technical field of sealing equipment, in particular to an automatic locking stuffing box.

Background

Stuffing boxes are a common sealing device and are commonly used for cable sealing. The partial stuffing box at least comprises two sealing elements and a fastening element which are arranged opposite to the box, wherein each sealing element is provided with a semicircular cable groove, and the fastening element is used for fixing the two sealing elements.

When installing the stuffing box, it is usually necessary to first place the cable in the semicircular cable grooves of the two sealing members and fasten the two sealing members with fasteners. However, the fastening of the fastening piece needs an operation space, and for some environments with limited installation space, the fastening construction difficulty and the maintenance difficulty of the stuffing box are high.

Disclosure of Invention

The embodiment of the disclosure provides an automatic locking stuffing box, which can rapidly complete the sealing of a cable in a narrow space. The technical scheme is as follows:

the disclosed embodiment provides an automatic locking stuffing box, which comprises a locking mechanism and a sealing mechanism, wherein the locking mechanism comprises a cable fixing ring, a mounting frame, two draw bars and two slide blocks, the cable fixing ring is used for being sleeved and fixed on a cable, the cable fixing ring and the mounting frame are arranged at intervals, a cable inserting hole coaxial with the cable fixing ring is formed in the mounting frame,

each sliding block is slidably arranged on the mounting frame, the sliding direction of each sliding block is perpendicular to the axis of the cable fixing ring, the two traction rods are distributed on two sides of the cable fixing ring, one end of each traction rod is hinged with the cable fixing ring, the other end of each traction rod is hinged with the sliding block, the distance between one ends of the two traction rods is smaller than the distance between the other ends of the two traction rods,

sealing mechanism includes first sealing member and second sealing member, first sealing member with the second sealing member respectively with two sliders are connected, first semicircle cable duct has on the first sealing member, second semicircle cable duct has on the second sealing member, first semicircle cable duct with the second semicircle cable duct sets up relatively just the axis in first semicircle cable duct the axis in second semicircle cable duct all is on a parallel with the solid fixed ring's of cable axis.

Optionally, locking mechanism still includes first reset spring and second reset spring that the axis is parallel to each other, first reset spring with second reset spring is all parallel the sliding direction of slider, first reset spring is located first sealing member is kept away from one side of second sealing member, just first reset spring's both ends respectively with first sealing member reaches the mounting bracket is connected, second reset spring is located the second sealing member is kept away from one side of first sealing member, just second reset spring's both ends respectively with the second sealing member reaches the mounting bracket is connected.

Optionally, the sealing mechanism further comprises a magnet and a magnetic metal, the magnet is connected to the first sealing member, and the magnetic metal is connected to the second sealing member.

Optionally, sealing mechanism still includes the sealing layer, the magnet with magnetic metal all is the semicircle, the coaxial setting of magnet is in the first semicircle cable duct, the coaxial setting of magnetic metal is in the second semicircle cable duct, the inside wall of magnet with all cover on the inside wall of magnetic metal the sealing layer.

Optionally, the locking mechanism further includes two J-shaped hooks, the two J-shaped hooks are distributed on two sides of the cable fixing ring, one end of each J-shaped hook is hinged to one end of one of the traction rods, and the other ends of the two J-shaped hooks are used for hooking the cable fixing ring.

Optionally, the cable fixing ring comprises an annular cylinder and two limiting rods, the two limiting rods are arranged on the outer wall of the annular cylinder along the circumferential direction of the annular cylinder, and each limiting rod is arranged along the radial direction of the annular cylinder.

Optionally, the crooked portion of J-shaped hook has spacing arch, the spacing arch is located on the inner wall of the crooked portion of J-shaped hook.

Optionally, locking mechanism still includes two stand pipes, two stand pipes distribute in the solid fixed ring's of cable both sides and be fixed in on the mounting bracket, every the stand pipe is all established one in the straight portion of J-shaped hook, just the stand pipe with the straight portion clearance fit of J-shaped hook, it is parallel to have length direction on the stand pipe the guide way of the solid fixed ring's of cable axis, every the traction lever and every hinge between the J-shaped hook all is located in the guide way.

Optionally, the locking mechanism further comprises two supporting plates, the two supporting plates are respectively connected with the two sliding blocks, the area of the surface of each supporting plate is larger than the area of any one surface of each sliding block, the supporting plates are perpendicular to the axis of the cable fixing ring, and the surfaces of the two supporting plates are respectively connected with the first sealing element and the second sealing element.

Optionally, the two traction rods are symmetrically arranged about the axis of the cable fixing ring, and are coplanar, and the plane of the two traction rods passes through the axis of the cable fixing ring.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

when the cable needs to be sealed, the cable fixing ring is sleeved and fixed on the cable, meanwhile, the cable extends into a cable inserting hole in the mounting frame which is arranged at an interval with the cable fixing ring, and the mounting frame is fixed in position. The cable is continuously pushed to move along the axis of the cable fixing ring relative to the mounting frame together with the cable fixing ring. Because every slider all slidable sets up on the mounting bracket, and the slip direction of slider is perpendicular to the solid fixed ring's of cable axis, and two traction rods distribute in the solid fixed ring's of cable both sides to the both ends of every traction rod are articulated with solid fixed ring of cable and slider respectively. When the cable fixing ring and the cable move, the traction rod is pulled by the cable fixing ring to pull the two sliding blocks to move. And because the distance between one ends of the two traction rods is smaller than the distance between the other ends of the two traction rods, the two traction rods are pulled by the cable fixing ring at one end to pull the two sliding blocks at the other ends of the two traction rods to be close to each other. The first sealing part and the second sealing part of the sealing mechanism respectively connected with the two sliding blocks can be close to each other along with the approaching of the two sliding blocks, the first semicircular cable groove on the first sealing part and the second semicircular cable groove on the second sealing part are oppositely arranged, the axis of the first semicircular cable groove and the axis of the second semicircular cable groove are parallel to the axis of the cable fixing ring, and the first semicircular cable groove and the second semicircular cable groove are finally closed to seal the cable between the first sealing part and the second sealing part. When the first sealing element and the second sealing element of the automatic locking stuffing box are fastened, extra fasteners and operation space are not needed, the cable is pushed according to the original laying route of the cable, and the locking mechanism can finish fastening the first sealing element and the second sealing element. The cable sealing device can rapidly complete the sealing of the cable in a narrow space.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive efforts,

FIG. 1 is a schematic structural diagram of an automatic locking stuffing box provided by the embodiment of the disclosure;

FIG. 2 is a schematic structural view of a J-hook provided by an embodiment of the present disclosure;

FIG. 3 is a side view of a tree valve port connection provided by embodiments of the present disclosure;

FIG. 4 is a schematic view of an A-direction of an auto-locking stuffing box provided by an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a mounting frame provided in the embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an automatic locking stuffing box provided by an embodiment of the present disclosure, and as can be seen from fig. 1, the embodiment of the present disclosure provides an automatic locking stuffing box, where the automatic locking stuffing box includes a locking mechanism 1 and a sealing mechanism 2, the locking mechanism 1 includes a cable fixing ring 101, a mounting frame 102, two pull rods 103 and two sliders 104, the cable fixing ring 101 is configured and fixed on a cable in a sleeving manner, the cable fixing ring 101 and the mounting frame 102 are arranged at an interval, and the mounting frame 102 has a cable insertion hole 102a coaxial with the cable fixing ring 101.

Each sliding block 104 is slidably arranged on the mounting frame 102, the sliding direction of the sliding block 104 is perpendicular to the axis of the cable fixing ring 101, the two traction rods 103 are distributed on two sides of the cable fixing ring 101, one end of each traction rod 103 is hinged to the cable fixing ring 101, the other end of each traction rod 103 is hinged to the sliding block 104, and the distance between one ends of the two traction rods 103 is smaller than the distance between the other ends of the two traction rods 103.

The sealing mechanism 2 comprises a first sealing element 201 and a second sealing element 202, the first sealing element 201 and the second sealing element 202 are respectively connected with the two sliding blocks 104, a first semicircular cable groove 201a is formed in the first sealing element 201, a second semicircular cable groove 202a is formed in the second sealing element 202, the first semicircular cable groove 201a and the second semicircular cable groove 202a are oppositely arranged, and the axis of the first semicircular cable groove 201a and the axis of the second semicircular cable groove 202a are parallel to the axis of the cable fixing ring 101.

When the cable 100 needs to be sealed, the cable fixing ring 101 is sleeved and fixed on the cable 100, the cable 100 extends into the cable insertion hole 102a of the mounting frame 102 arranged at an interval with the cable fixing ring 101, and the mounting frame 102 is fixed in position. The cable 100 is continuously pushed to move along the axis of the cable fixing ring 101 together with the cable fixing ring 101 relative to the mounting frame 102. Since each sliding block 104 is slidably disposed on the mounting frame 102, the sliding direction of the sliding block 104 is perpendicular to the axis of the cable fixing ring 101, and the two pulling rods 103 are distributed on two sides of the cable fixing ring 101, and two ends of each pulling rod 103 are respectively hinged to the cable fixing ring 101 and the sliding block 104. When the cable fixing ring 101 and the cable 100 move, the two sliders 104 are pulled by the pulling rod 103 through the cable fixing ring 101 to move. Since the distance between one ends of the two traction rods 103 is smaller than the distance between the other ends of the two traction rods 103, the two traction rods 103 are pulled by the cable fixing ring 101 at one end to pull the two sliders 104 at the other ends of the two traction rods 103 to approach each other. The first sealing member 201 and the second sealing member 202 of the sealing mechanism 2 respectively connected to the two sliding blocks 104 are also close to each other along with the approach of the two sliding blocks 104, the first semicircular cable groove 201a on the first sealing member 201 and the second semicircular cable groove 202a on the second sealing member 202 are oppositely arranged, the axial line of the first semicircular cable groove 201a and the axial line of the second semicircular cable groove 202a are both parallel to the axial line of the cable fixing ring 101, and the first semicircular cable groove 201a and the second semicircular cable groove 202a are finally closed to seal the cable 100 between the first sealing member 201 and the second sealing member 202. When the first sealing element 201 and the second sealing element 202 of the automatic locking stuffing box are fastened, no additional fastener or operation space is needed, the cable 100 is pushed according to the original laying route of the cable 100, and the locking mechanism 1 can finish fastening the first sealing element 201 and the second sealing element 202. Sealing of the cable 100 can be quickly accomplished in a small space. When the first sealing element 201 and the second sealing element 202 which are closed need to be pushed away, the cable 100 can also be pushed back, so that one ends of the two traction rods 103 are pressed, and the other ends of the two traction rods 103 are away from each other, thereby driving the two sliding blocks 104 and the first sealing element 201 and the second sealing element 202 which are connected with the two sliding blocks in a sliding manner to be separated. The quick separation of the first seal 201 and the second seal 202 can also be accomplished.

When the first sealing member 201 and the second sealing member 202 are closed and locked to the cable 100, the end of the cable 100 may be fixedly connected to another wiring device or another cable, and the cable 100 is sealed and the position of the cable 100 is fixed, so that the cable 100 sealed by the first sealing member 201 and the second sealing member 202 is not separated by the retraction of the cable 100, and the cable 100 cannot be sealed.

In the implementation manner provided by the present disclosure, the distance between one end of the two traction rods 103 is smaller than the distance between the other end of the two traction rods 103, and from the angle of force analysis, the cable 100 can also push the sliding blocks 104 at the other end of the two traction rods 103 to rapidly move and separate when pushing back.

In the implementation provided by the present disclosure, before the cable 100 is sleeved and fixed with the cable fixing ring 101, the distance between the end of the cable 100 to be wired and the cable fixing ring 101 in the axial direction of the cable 100, and the distance that the first sealing member 201 and the second sealing member 202 need to move from the separated state to the closed state of the first sealing member 201 and the second sealing member 202, may also be measured. Making the two distances equal ensures that the end of the cable 100 is just moved to a position where it can be wired when the first sealing member 201 and the second sealing member 202 are closed.

Alternatively, the two pull rods 103 may be symmetrically disposed about the axis of the cable securing ring 101, with the two pull rods 103 being coplanar, with the plane of the two pull rods 103 passing through the axis of the cable securing ring 101.

At this time, the stress of the two traction rods 103 is stable, and the acting force can be stably transmitted to the sliding block 104 to pull the sliding block 104, so that the stable work of the traction rods 103 and the sliding block 104 is ensured.

Referring to fig. 1, the locking mechanism 1 may further include two J-shaped hooks 105, the two J-shaped hooks 105 are disposed on two sides of the cable fixing ring 101, one end of each J-shaped hook 105 is hinged to one end of one of the traction rods 103, and the other ends of the two J-shaped hooks 105 are used for hooking the cable fixing ring 101.

When the cable fixing ring 101 and the cable 100 are pushed along the routing path of the cable 100, the J-shaped hook 105 can hook the cable fixing ring 101, move along with the cable fixing ring 101 and further pull the pulling rod 103 and the slider 104 connected with the pulling rod 103. When the cable 100 needs to be withdrawn from the mounting frame 102, since the cable fixing ring 101 is hooked by the J-shaped hook 105, when the cable fixing ring 101 is withdrawn to a certain position, the cable fixing ring 101 can be withdrawn from the J-shaped hook 105 and then withdrawn from the cable insertion hole 102a of the mounting frame 102, and the cable 100 and the cable fixing ring 101 can be directly separated from the mounting frame 102 together. And finally, the mounting frame 102, the slide block 104, the traction rod 103, the J-shaped hook 105 and other structures are disassembled. The cable fixing ring 101 can be detached from the mounting frame 102 and other structures to be detached and installed independently, so that the automatic locking stuffing box can be detached and installed independently, the cable fixing ring 101 is detached from the mounting frame 102 and other structures to be detached and installed independently, the detaching and installing of the automatic locking stuffing box can be carried out in two steps, and the detaching space and the installing space required by the automatic locking stuffing box are small. The whole assembly and disassembly of the automatic locking stuffing box can be completed in a small space.

Illustratively, the straight portion 1051 of the J-shaped hooks 105 may be parallel to the axis of the cable fixing ring 101, and the two J-shaped hooks 105 are symmetrically disposed about the axis of the cable fixing ring 101, and the straight portion 1051 and the curved portion 1052 of each J-shaped hook 105 are sequentially disposed in a direction away from the mounting bracket 102. The cable 100 and the cable fixing ring 101 can be conveniently disassembled.

Fig. 2 is a schematic structural diagram of a J-shaped hook provided by an embodiment of the present disclosure, and as can be seen from fig. 2, in an implementation manner provided by the present disclosure, the J-shaped hook 105 includes a straight portion 1051 and a curved portion 1052, the straight portion 1051 of the J-shaped hook 105 is a portion where the upper surface of the J-shaped hook 105 is a flat surface, and the curved portion 1052 of the J-shaped hook 105 is a portion where a curved surface exists on the J-shaped hook 105.

Optionally, the crooked portion of the J-hook 105 has a limit protrusion 1053, and the limit protrusion 1053 is located on the inner wall of the bent portion 1052 of the J-hook 105.

The outer wall of the cable fixing ring 101 hooked by the J-shaped hook 105 can be clamped between the limiting protrusion 1053 and the straight portion 1051 of the J-shaped hook 105 by the limiting protrusion 1053, and the J-shaped hook 105 can be guaranteed to stably drive the cable fixing ring 101 to move.

Fig. 3 is a schematic structural diagram of a cable fixing ring provided in an embodiment of the present disclosure, and referring to fig. 3, the cable fixing ring 101 includes an annular cylinder 1011 and two limiting rods 1012, the two limiting rods 1012 are disposed on an outer wall of the annular cylinder 1011 along a circumferential direction of the annular cylinder 1011, and each limiting rod 1012 is disposed along a radial direction of the annular cylinder 1011.

The limit rod 1012 can be matched with the limit protrusion 1053, and the limit rod 1012 is positioned between the limit protrusion 1053 and the straight portion 1051 of the J-shaped hook 105, so that the cable fixing ring 101 can be driven to move by the J-shaped hook 105.

Referring to fig. 1, the locking mechanism 1 may further include two guide tubes 106, the two guide tubes 106 are disposed on two sides of the cable fixing ring 101 and fixed on the mounting frame 102, each guide tube 106 is sleeved on the straight portion 1051 of one J-shaped hook 105, the guide tubes 106 are in clearance fit with the straight portions 1051 of the J-shaped hooks 105, the guide tubes 106 have guide grooves 106a with length directions parallel to the axis of the cable fixing ring 101, and the hinge axis C between each traction rod 103 and each J-shaped hook 105 is located in the guide grooves 106 a.

The guide tube 106 can guide the straight part 1051 of the J-shaped hook 105, meanwhile, the hinge shaft C between each traction rod 103 and each J-shaped hook 105 is positioned in the guide groove 106a on the guide tube 106, so that the movement of the J-shaped hook 105 and the traction rod 103 is not influenced, meanwhile, the guide groove 106a can additionally guide the hinge shaft C between each traction rod 103 and each J-shaped hook 105, and the J-shaped hook 105 and the traction rod 103 can be ensured to stably move to pull the sliding block 104.

Fig. 4 is a schematic view of an automatic locking stuffing box according to an embodiment of the present disclosure in a direction a, and as can be seen from referring to fig. 4, the locking mechanism 1 further includes a first return spring 107 and a second return spring 108 whose axes are parallel to each other, both the first return spring 107 and the second return spring 108 are parallel to the sliding direction of the slider 104, the first return spring 107 is located on one side of the first sealing member 201 away from the second sealing member 202, both ends of the first return spring 107 are respectively connected with the first sealing member 201 and the mounting bracket 102, the second return spring 108 is located on one side of the second sealing member 202 away from the first sealing member 201, and both ends of the second return spring 108 are respectively connected with the second sealing member 202 and the mounting bracket 102.

When the first sealing member 201 and the second sealing member 202 need to be opened, the first return spring 107 and the second return spring 108 can provide certain acting force to the sliding blocks 104, and the first return spring 107 and the second return spring 108 respectively provide acting force to the two sliding blocks 104 to move away from each other while the cable 100 is retracted, so that the first sealing member 201 and the second sealing member 202 can be separated quickly.

Referring to fig. 4, the sealing mechanism 2 further includes a magnet 203 and a magnetic metal 204, the magnet 203 is connected to the first sealing member 201, and the magnetic metal 204 is connected to the second sealing member 202.

The magnet 203 is connected to the first sealing member 201, the magnetic metal 204 is connected to the second sealing member 202, and the magnet 203 and the magnetic metal 204 attract each other, so that the connection between the first sealing member 201 and the second sealing member 202 is tighter. And the attraction force of the cooperation of the magnet 203 and the magnetic metal 204 is not excessive, and therefore, the separation of the first sealing member 201 and the second sealing member 202 is not affected.

In other implementations provided by the present disclosure, the magnetic metal 204 may be replaced by the magnet 203, and the magnet 203 on the first sealing member 201 and the magnet 203 on the second sealing member 202 may attract each other. The present disclosure is not so limited.

Optionally, the auto-locking stuffing box includes at least two states of closing and separating. When the automatic locking stuffing box is in a closed state, the first sealing piece 201 and the second sealing piece 202 are closed, the distance between the cable fixing ring 101 and the mounting frame 102 is farthest, and the distance between the two sliding blocks 104 is closest. The magnet 203 is in contact with the magnetic metal 204, the first return spring 107 and the second return spring 108 are both stretched, and the elastic force of the first return spring 107 is larger than the attractive force between the magnet 203 and the magnetic metal 204. When the automatic locking stuffing box is in a separated state, the first sealing piece 201 is farthest away from the second sealing piece 202, the cable fixing ring 101 is closest to the mounting frame 102, and the two sliding blocks 104 are farthest away. The magnet 203 is farthest away from the magnetic metal 204, and the first return spring 107 and the second return spring 108 have no elastic force.

When the automatic locking stuffing box is in a closed state, the elastic force of the first return spring 107 and the second return spring 108 is larger than the attractive force between the magnet 203 and the magnetic metal 204, so that when the first sealing piece 201 and the second sealing piece 202 need to be separated, the first return spring 107 and the second return spring 108 can rapidly pull the magnet 203 and the magnetic metal 204 and the first sealing piece 201 and the second sealing piece 202 apart.

It should be noted that, when the cable 100 is in the closed state, the end of the cable 100 is fixed by the wire connecting device, the position of the cable fixing ring 101 is fixed accordingly, and the position of the mounting bracket 102 is fixed at the beginning, so the cable 100 does not move relative to the mounting bracket 102, and the first return spring 107 and the second return spring 108 cannot pull the first sealing member 201, the second sealing member 202, the pull rod 103, and the cable fixing ring 101 in sequence by pulling the slider 104. The elastic force of the first and second return springs 107 and 108 greater than the attractive force between the magnet 203 and the magnetic metal 204 does not cause the first and

second sealing members

201 and 202 to be separated.

Referring to fig. 4, the sealing mechanism 2 may further include a sealing layer 205, the magnet 203 and the magnetic metal 204 are semi-annular, the magnet 203 is coaxially disposed in the first semicircular cable groove 201a, the magnetic metal 204 is coaxially disposed in the second semicircular cable groove 202a, and the sealing layer 205 covers an inner sidewall of the magnet 203 and an inner sidewall of the magnetic metal 204.

The magnet 203 is coaxially arranged in the first semicircular cable groove 201a, and the magnetic metal 204 is coaxially arranged in the second semicircular cable groove 202a, so that the space occupied by the magnet 203 and the magnetic metal 204 can be reduced, and the acting force for attracting and closing the first sealing member 201 and the second sealing member 202 is larger. Sealing layer 205 covers the inner side wall of magnet 203 and the inner side wall of magnetic metal 204, so that cable 100 can be ensured to be directly contacted with sealing layer 205, and cable 100 is ensured to be sealed by first sealing element 201, second sealing element 202 and sealing layer 205.

Alternatively, the first sealing member 201 and the second sealing member 202 may have a rectangular parallelepiped structure with the same structure, and a first semicircular cable groove 201a and a second semicircular cable groove 202a are formed in one surface of the first sealing member 201 and one surface of the second sealing member 202, respectively. At this time, the surfaces of the first sealing member 201 and the second sealing member 202 may also be attached to each other, so as to ensure the sealing effect on the cable 100.

Illustratively, the sealing layer 205 may be made of a rubber material. Easy preparation and acquisition and has better sealing effect.

It should be noted that, in other implementation manners provided in the present disclosure, the magnet 203 and the magnetic metal 204 may also be disposed on the first sealing member 201 and the second sealing member 202, respectively, and the magnet 203 is located outside the first semicircular cable groove 201a, and the magnetic metal 204 is located outside the second semicircular cable groove 202 a. The first sealing member 201 and the second sealing member 202 may also be brought close to each other by the attraction of the magnet 203 and the magnetic metal 204, which is not limited by the present disclosure.

Referring to fig. 1 and 4, the locking mechanism 1 further includes two supporting plates 109, the two supporting plates 109 are respectively connected to the two sliders 104, the area of the plate surface of the supporting plate 109 is larger than the area of any one surface of the slider 104, the supporting plates 109 are perpendicular to the axis of the cable fixing ring 101, and the plate surfaces of the two supporting plates 109 are respectively connected to the first sealing member 201 and the second sealing member 202.

The supporting plate 109, the area of which is larger than the area of any one surface of the slider 104, is directly connected to the first sealing member 201 or the second sealing member 202, and the plate surface of the supporting plate 109 is perpendicular to the axis of the cable fixing ring 101. The supporting plate 109 can play a good supporting role for the first sealing element 201 and the second sealing element 202, and it is ensured that the slider 104 can stably pull the supporting plate 109 to pull the first sealing element 201 or the second sealing element 202 connected with the supporting plate 109.

Fig. 5 is a schematic structural diagram of a mounting frame according to an embodiment of the disclosure, and referring to fig. 5, the mounting frame 102 may include a mounting plate 1021, two stoppers 1022, and two connecting plates 1023. The mounting plate 1021 includes a first surface 1021a and a second surface 1021b parallel to and opposite to each other, and the cable insertion hole 102a is disposed on the mounting plate 1021 and penetrates through the first surface 1021a and the second surface 1021 b. Two stoppers 1022 are fixed to the first surface 1021a and located at both sides of the cable insertion hole 102a, two connection plates 1023 are connected to the two stoppers 1022, respectively, and the two connection plates 1023 are disposed parallel to the mounting plate 1021, and the two connection plates 1023 are also located at both sides of the cable insertion hole 102 a. A sliding space is formed between each stop 1022, the connecting plate 1023 and the first surface 1021a of the mounting plate 1021, and a sliding block 104 is slidably disposed on each connecting plate 1023. One end of the first return spring 107 and one end of the second return spring 108 are respectively connected to the two stoppers 1022, and the other end of the first return spring 107 and the other end of the second return spring 108 are respectively connected to one slider 104.

By adopting the above arrangement for the mounting frame 102, the mounting of the structure such as the sliding block 104 on the mounting frame 102 can be realized without increasing the overall volume of the mounting frame 102 as much as possible. The slider 104 can slide in the space formed between the connecting plate 1023 and the mounting plate 1021, and the slider 104 cannot slide out of the space formed between the connecting plate 1023 and the mounting plate 1021 due to the traction of the first return spring 107 and the second return spring 108 on the slider 104.

Alternatively, the first sealing member 201 and the second sealing member 202 may be disposed on the first surface 1021a or the second surface 1021b at the same time.

For example, under the condition that the locking mechanism 1 includes two supporting plates 109, the mounting plate 1021 has two guiding chutes 1021c corresponding to the two sliders 104 one by one, the two guiding chutes 1021c are disposed at intervals and located at two sides of the cable insertion hole 102a, respectively, and the length direction of the guiding chute 1021c is perpendicular to the axis of the cable fixing ring 101. Two support plates 109 may be disposed on the second surface 1021b, and a first seal 201 and a second seal 202 may be disposed on one plate surface of the support plates 109 away from the mounting plate 1021.

The guiding sliding groove 1021c can guide the sliding block 104, so that an additional structure is not needed to be added to guide the sliding block 104 besides the connecting plate 1023 and the sliding block 104 is prevented from being separated from the connecting plate 1023. The first sealing member 201, the second sealing member 202 and the supporting plate 109 are disposed on one side of the second surface 1021b of the mounting plate 1021, and are respectively located on two sides of the mounting plate 1021 together with the slider 104, so that the space is saved and interference is not easily generated.

Alternatively, the mounting bracket 102 may further include two support bars 1024, the two support bars 1024 are disposed at both sides of the cable insertion hole 102a, and both ends of each support bar 1024 may be connected to the stopper 1022 and the guide tube 106, respectively.

The support rods 1024 can reinforce the strength of the mounting plate 1021 and the stoppers 1022, and support the guide tube 106.

Illustratively, the support bar 1024 may be an L-shaped bar. The mounting plate 1021 and the guide tube 106 are supported well.

Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.

Claims

1. The automatic locking stuffing box is characterized by comprising a locking mechanism (1) and a sealing mechanism (2), wherein the locking mechanism (1) comprises a cable fixing ring (101), an installation frame (102), two sliding blocks (104) and two traction rods (103), the cable fixing ring (101) is used for being sleeved and fixed on a cable, the cable fixing ring (101) and the installation frame (102) are arranged at intervals, a cable inserting hole (102a) coaxial with the cable fixing ring (101) is formed in the installation frame (102),

each sliding block (104) is slidably arranged on the mounting frame (102), the sliding direction of each sliding block (104) is perpendicular to the axis of the cable fixing ring (101), the two traction rods (103) are distributed on two sides of the cable fixing ring (101), one end of each traction rod (103) is hinged to the cable fixing ring (101), the other end of each traction rod (103) is hinged to the sliding block (104), and the distance between one ends of the two traction rods (103) is smaller than the distance between the other ends of the two traction rods (103),

sealing mechanism (2) include first sealing member (201) and second sealing member (202), first sealing member (201) with second sealing member (202) respectively with two sliders (104) are connected, first semicircle cable duct (201a) have on first sealing member (201), second semicircle cable duct (202a) have on second sealing member (202), first semicircle cable duct (201a) with second semicircle cable duct (202a) set up relatively just the axis of first semicircle cable duct (201a), the axis of second semicircle cable duct (202a) all is on a parallel with the axis of cable fixing ring (101).

2. The auto-locking stuffing box according to claim 1, characterized in that the locking mechanism (1) further comprises a first return spring (107) and a second return spring (108) having axes parallel to each other, the first return spring (107) and the second return spring (108) are both parallel to the sliding direction of the sliding block (104), the first return spring (107) is located on a side of the first seal (201) remote from the second seal (202), and both ends of the first return spring (107) are respectively connected with the first sealing element (201) and the mounting frame (102), the second return spring (108) is located on a side of the second seal (202) remote from the first seal (201), and two ends of the second return spring (108) are respectively connected with the second sealing element (202) and the mounting frame (102).

3. The auto-locking stuffing box according to claim 1, wherein the sealing mechanism (2) further comprises a magnet (203) and a magnetic metal (204), the magnet (203) being attached to the first sealing member (201), the magnetic metal (204) being attached to the second sealing member (202).

4. The auto-locking stuffing box according to claim 3, wherein the sealing mechanism (2) further comprises a sealing layer (205), the magnet (203) and the magnetic metal (204) are semi-annular, the magnet (203) is coaxially disposed in the first semicircular cable groove (201a), the magnetic metal (204) is coaxially disposed in the second semicircular cable groove (202a), and the sealing layer (205) covers the inner side wall of the magnet (203) and the inner side wall of the magnetic metal (204).

5. The auto-locking stuffing box according to any one of claims 1 to 4, wherein the locking mechanism (1) further comprises two J-shaped hooks (105), the two J-shaped hooks (105) are distributed on both sides of the cable fixing ring (101), one end of each J-shaped hook (105) is hinged with one end of one draw bar (103), and the other ends of the two J-shaped hooks (105) are used for hooking the cable fixing ring (101).

6. The auto-locking stuffing box according to claim 5, wherein the cable fixing ring (101) comprises an annular cylinder (1011) and two stopper rods (1012), the two stopper rods (1012) are provided on the outer wall of the annular cylinder (1011) along the circumferential direction of the annular cylinder (1011), and each of the stopper rods (1012) is provided along the radial direction of the annular cylinder (1011).

7. An automatic locking stuffing box according to claim 6, characterized in that the crooked part of the J-shaped hook (105) has a limit projection (1053), the limit projection (1053) being located on the inner wall of the bent part (1052) of the J-shaped hook (105).

8. The auto-locking stuffing box according to claim 5, wherein the locking mechanism (1) further comprises two guide tubes (106), the two guide tubes (106) are distributed on both sides of the cable fixing ring (101) and fixed on the mounting frame (102), each guide tube (106) is sleeved on the straight portion (1051) of one J-shaped hook (105), the guide tubes (106) are in clearance fit with the straight portions (1051) of the J-shaped hooks (105), the guide tubes (106) are provided with guide grooves (106a) with length directions parallel to the axis of the cable fixing ring (101), and hinge shafts (C) between each traction rod (103) and each J-shaped hook (105) are located in the guide grooves (106 a).

9. The auto-locking stuffing box according to any one of claims 1 to 4, wherein the locking mechanism (1) further comprises two support plates (109), the two support plates (109) are respectively connected with the two sliders (104), the area of the plate surface of each support plate (109) is larger than the area of any one surface of the slider (104), the support plates (109) are perpendicular to the axis of the cable fixing ring (101), and the plate surfaces of the two support plates (109) are respectively connected with the first sealing member (201) and the second sealing member (202).

10. An automatic locking stuffing box according to any of claims 1 to 4, characterized in that said two pulling rods (103) are symmetrically arranged about the axis of said cable fixing ring (101) and said two pulling rods (103) are coplanar, the plane of said two pulling rods (103) passing through the axis of said cable fixing ring (101).