Push-pull ring main unit door lock structure

Abstract

The present invention provides a push-pull type ring network cabinet door lock structure, comprising two lock rods which are matched with the sockets on the ring network cabinet body and are arranged up and down, and the structural characteristics are: it also comprises a lock body which is fixedly arranged on the door of the ring network cabinet as the installation basis of the door lock structure, a push-pull type driving mechanism which is arranged on the lock body and is used to drive the two lock rods to move vertically up and down to realize the locking and unlocking of the door of the ring network cabinet through forward and backward push-pull movement, and a padlock for locking the lock body; the push-pull type driving mechanism comprises a push-pull handle, an inner connecting piece, an outer connecting piece and two steel wire tubes; the push-pull handle is sleeved with the inner connecting piece and can rotate relative to the inner connecting piece, the inner connecting piece is threadedly connected with the outer connecting piece, each one end of the two steel wire tubes is fixedly connected with the outer connecting piece; each other end of the two steel wire tubes is fixedly connected with one end of the two lock rods close to the lock body. The present invention has a relatively simple structure, relatively low cost, and is convenient and labor-saving to lock and unlock when in use.

Description

Technical Field

[0001] The invention relates to the field of supporting devices for ring main unit in a distribution network, and in particular to a push-pull type ring main unit door lock structure. Background Art

[0002] With the continuous development of society, especially cities, the number of ring main units, which are one of the important intermediate equipment in the distribution network, is increasing. In order to ensure the normal operation and safety of the ring main unit, the ring main unit needs to be locked. The traditional method of locking the ring main unit is to set a device such as a hanging ear or a locking tongue on the cabinet door and then install a padlock. The disadvantages are obvious: first, the lock cabinet is exposed, which makes it difficult to open the padlock in the outdoor environment of wind, sun and rain. The padlock and its equipped hanging ear or locking tongue are prone to rust and damage. At the same time, the exposure of the padlock is also prone to lock picking and theft. Therefore, the traditional locking method is basically not used at present. The rotary ring main cabinet door lock structure commonly used in the ring main cabinet is as follows: Fig.13 and 14 As shown, it mainly consists of a lock box arranged on the ring network cabinet door, a rotary handle arranged in the lock box, a hanging rod and a padlock used to lock the rotary handle in the lock box, a top and bottom rod type lock rod matched with the cabinet body, a connecting piece arranged outside the lock box for transmission connection between the rotary handle and the top and bottom rod, and a box cover designed to be lifted upwards in conjunction with the lock box. When locking, the rotary handle is operated to rotate, which drives the top and bottom rods to move up and down accordingly and plug and lock them with the rod holes on the cabinet body, and then the rotary handle is locked with a padlock. At present, this type of door lock structure has greatly improved safety, reliability and anti-theft performance compared with the traditional padlock structure. However, the problems found in its actual use are: since the ring network cabinet is generally located in an outdoor green belt or roadside, it is easy to rust and get stuck. The door lock structure currently used in the ring network cabinet adopts a structure of separating and joining the top and bottom poles by a rotating handle. Since its rotating lever is too small, when turning the rotating handle, if the connector and / or the top and bottom pole are stuck or deformed, it is very laborious to turn the rotating handle, and it is very difficult to lock, which seriously affects the work efficiency. There is even a situation where the operation and maintenance personnel rotate vigorously, causing the connection of the rotating handle or the connection between the connector and the top and bottom pole to break. In addition, in the existing structure, the top and bottom pole is directly connected to the connector, which makes it easy for the top and bottom pole and the plug-in hole on the cabinet to be misaligned, causing difficulty in locking; in addition, the box cover is a structure that is lifted upward, which will interfere with the operation during use, affecting the unlocking and locking operations. Therefore, it is necessary to improve the existing widely used door lock structure of this type of ring network cabinet.

[0003] With the advancement of technology, smart door locks are now also being used in ring main units. For example, Chinese patent document CN204189215U proposes a ring main unit lock with an intelligent identification function, which can open and close the internal structure of the lock by identifying whether the key is authorized. Such smart locks have stronger anti-theft functions than commonly used padlocks. However, the cost of converting existing ring main unit door locks into smart locks on a large scale is high and not very economical. In addition, existing smart locks also have problems in actual use, such as the power of smart lock keys is difficult to control, and maintenance personnel often arrive at the site and the keys are out of power and cannot open the door. Summary of the invention

[0004] The purpose of the present invention is to provide a push-pull type ring main unit door lock structure with relatively simple structure, relatively low cost and convenient and labor-saving locking and unlocking when in use, in view of the problems existing in the prior art.

[0005] The technical solution of the present invention is: the push-pull type ring network cabinet door lock structure of the present invention includes two locking rods which are matched with the sockets on the ring network cabinet body and are arranged up and down when in use, and its structural characteristics are: it also includes a lock body fixedly arranged on the ring network cabinet door as the installation basis of the above-mentioned door lock structure, a push-pull driving mechanism arranged on the above-mentioned lock body for driving the two locking rods to move vertically up and down through forward and backward pushing and pulling movements to achieve the locking and unlocking of the ring network cabinet door, and a padlock for locking the above-mentioned lock body; the above-mentioned push-pull driving mechanism includes a push-pull handle, an inner connecting piece, an outer connecting piece and two steel wire tubes; the above-mentioned push-pull handle is sleeved with the inner connecting piece and can rotate relative to the inner connecting piece, the inner connecting piece is threadedly connected to the outer connecting piece, and one end of each of the two steel wire tubes is fixedly connected to the outer connecting piece; the other end of each of the two steel wire tubes is fixedly connected to one end of the two locking rods close to the lock body.

[0006] A further solution is that the lock body comprises a box body, a handle support, a padlock tongue, a box cover and a lock rod installation limiter;

[0007] The front end of the box body is open, and a through hole that penetrates from front to back is provided in the middle of the rear plate of the box body as a connecting through hole; the handle support is a block-shaped structural member, and a handle placement groove that is recessed in the middle of the front end of the handle support is provided, and the handle support is divided into two upper and lower parallel fixed structures with the same structure in the box body; the padlock tongue is fixedly arranged in the box body and is located above the two handle supports, and a padlock hole is provided at the front end of the padlock tongue; the box cover comprises a base plate, a padlock accommodating box, an outer cover plate and a handle; the base plate is a plate body member whose outer circumferential size matches the front end opening of the box body, and a hollow square hole whose size matches the padlock accommodating box is provided on the base plate, and the padlock accommodating box is a box body member with an opening at the front end, and the padlock accommodating box is arranged behind the square hole of the base plate and is integrated or fixedly connected with the rear end face of the base plate, and a lock tongue through hole that penetrates from front to back is provided in the middle of the upper part of the rear plate of the padlock accommodating box; when locking, the front end of the padlock tongue passes through the padlock After the lock tongue of the accommodating box passes through the hole; the padlock hole of the padlock tongue is exposed in the padlock accommodating box, and the padlock cooperates with the padlock hole of the padlock tongue to lock the box cover on the box body; the outer cover plate is movably connected to the base plate by its upper part, and the front end opening of the padlock accommodating box is completely covered when the outer cover plate is not lifted; the box cover is movably connected to the lower part of the front end opening of the box body by the lower part of its base plate; the handle is integrally or fixedly arranged at the middle of the upper part of the front end surface of the base plate; the lock rod installation limiter is a structural member provided with a lock rod through hole that penetrates up and down; the lock rod installation limiter is provided with two lock rod installation limiters with the same structure, and the two lock rod installation limiters are integrally or fixedly connected with the rear plate of the box body, and the upper and lower parts of the connection through holes of the two lock rod installation limiters in the middle of the rear plate of the box body are mirror-imaged; the above-mentioned two lock rods are respectively connected to the corresponding steel wire tubes at one end after the ends of the two lock rods close to the lock body pass through the lock rod through holes of the corresponding lock rod installation limiters.

[0008] A further solution is: the push-pull handle includes an operating handle and a connecting rod, the operating handle is a round rod, and a through mounting circular hole is radially provided in the middle of the operating handle; the connecting rod is integrally composed of a cylindrical portion and a conical portion, the maximum outer diameter of the conical portion is the same as the outer diameter of the cylindrical portion, and the outer diameter of the cylindrical portion is adapted to the inner diameter of the connection through hole of the box body; the connecting rod is axially provided with a through inner connecting piece mounting hole, and the aperture of the inner connecting piece mounting hole in the cylindrical portion is larger than that in the conical portion; the connecting rod is fixedly connected to the operating handle by matching the front end of its cylindrical portion with the mounting circular hole of the operating handle.

[0009] A further solution is that the push-pull handle further comprises a reinforcing member, and the reinforcing member is fixedly arranged at the periphery of the connection between the connecting rod and the operating handle to increase the strength of the connection.

[0010] A further solution is that the inner connecting member is a bolt, which is arranged in the inner connecting member mounting hole of the connecting rod of the push-pull handle, and one end of the inner connecting member provided with a thread extends rearward from a rear port of the truncated cone portion of the push-pull handle, and an operating end of the inner connecting member is clearance-matched with a front end of the truncated cone portion of the push-pull handle, so that the push-pull handle can rotate relative to the inner connecting member.

[0011] A further solution is: the above-mentioned external connecting piece includes a connecting plate and a connecting pipe; the rear end surface of the above-mentioned connecting plate is provided with two circular connecting holes, one above and one below; the connecting pipe is integrally or fixedly connected with the middle of the front end surface of the connecting plate, and an internal thread for connection is provided in the connecting pipe; the external connecting piece is fixedly connected by the front end of its connecting pipe through the connection hole of the box body and the threaded cooperation with the internal connecting piece; the external connecting piece is plugged and fixedly connected with each end of the two steel wire pipes by the two connecting holes of its connecting plate.

[0012] The present invention has positive effects: (1) The push-pull type ring main unit door lock structure of the present invention is designed as a horizontal push-pull type drive mechanism by driving the two lock rods of the top and bottom rod type to move to achieve locking and unlocking. Compared with the common rotary drive mechanism in the prior art, it is more convenient and labor-saving to operate when in use, can significantly improve the efficiency, and can effectively avoid the rotary drive mechanism in the prior art that when the rotary lever is too small, if the connecting piece and / or the top and bottom rod are stuck or deformed, it is very laborious to turn the rotary handle, and it is very difficult to lock, which seriously affects the work efficiency, and even the operation and maintenance personnel rotate vigorously to cause the connection between the rotary handle or the connection between the connecting piece and the top and bottom rod to break. (2) The push-pull type ring main unit door lock structure of the present invention is designed with a matching structure of the lock body box body and the box cover. When operating, the box cover opens downward so that the front end opening of the box body is completely exposed, which is convenient for operation and the box cover will not interfere with the operation, thereby solving the problem that the box cover in the prior art is a structure that is lifted upward, which will interfere with the operation when in use, affecting the unlocking and locking operation, and thus affecting the work efficiency. (3) The push-pull type ring main unit door lock structure of the present invention sets two locking rod installation limiters on the lock body, so that the two locking rods do not deviate in the vertical movement direction when in use, so that they can accurately dock with the sockets on the cabinet body for locking, thereby effectively solving the technical problem in the prior art that the top and bottom rods are directly connected to the connecting piece, which makes it easy for the top and bottom rods and the sockets on the cabinet body to be misaligned and difficult to lock. (4) The push-pull type ring main unit door lock structure of the present invention has a relatively simple overall structure and relatively low cost, and can be easily modified and implemented on the basis of the existing widely used rotary ring main unit door lock structure, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention after locking;

[0014] Figure 2 for Figure 1 Right view of;

[0015] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure;

[0016] Figure 4 for Figure 3 Rear view of

[0017] Figure 5 for Figure 1 The AA section view is enlarged;

[0018] Figure 6 for Figure 3 Schematic diagram of the three-dimensional structure when the outer cover is lifted;

[0019] Figure 7 for Figure 6 Schematic diagram of the three-dimensional structure after the padlock is removed and the lid is opened;

[0020] Figure 8 It is a schematic diagram of the structure of the present invention after being unlocked and the box cover is put down;

[0021] Fig. 9 for Figure 8 BB section view;

[0022] Fig.10 for Figure 1 Schematic diagram of the three-dimensional structure of the middle lock body;

[0023] Fig.11 for Figure 5 Schematic diagram of the three-dimensional structure of the middle handle;

[0024] Fig.12 for Figure 2 Schematic diagram of the three-dimensional structure of the Chinese and foreign connecting parts;

[0025] Fig.13 It is a three-dimensional structural schematic diagram of the rotary ring main unit door lock structure in the unlocked state in the prior art;

[0026] Fig.14 The figure is a rear view of the rotary ring main unit door lock structure in the prior art when locked.

[0027] The reference numerals in the above drawings are as follows:

[0028] Lock body 1, box body 11, mounting hole 11-1, handle support 12, handle placement groove 12-1, padlock tongue 13, padlock hole 13-1, box cover 14, base plate 14-1, padlock accommodating box 14-2, lock tongue through hole 14-2-1, outer cover plate 14-3, handle 14-4, lock rod installation limiter 15, lock rod through hole 15-1;

[0029] Push-pull handle 2, operating handle 21, connecting rod 22, cylindrical portion 22-1, truncated cone portion 22-2, inner connecting member mounting hole 22-3, reinforcing member 23;

[0030] Inner connecting member 3; outer connecting member 4, connecting plate 41, connecting hole 41-1, connecting pipe 42;

[0031] Steel wire tube 5; locking rod 6; padlock 7. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] (Example 1)

[0034] See Figures 1 to 6 The push-pull type ring main unit door lock structure of this embodiment is mainly composed of a lock body 1, a push-pull handle 2, an inner connecting piece 3, an outer connecting piece 4, a steel wire tube 5, a locking rod 6 and a padlock 7.

[0035] See also Fig.10 and Figure 5 The lock body 1 is used as the installation basis of the door lock structure. The lock body 1 is mainly composed of a box body 11, a handle support 12, a padlock tongue 13, a box cover 14 and a lock rod installation limiter 15.

[0036] The box body 11 is a square box-shaped member with an open front end. Each of the four corners of the rear plate of the box body 11 is provided with a mounting hole 11-1. When in use, the lock body 1 is fixed to the cabinet door of the ring network cabinet by screws or bolts matched with the four mounting holes 11-1; a through hole that penetrates from front to back is provided in the middle of the rear plate of the box body 11 as a connecting through hole (not marked in the figure).

[0037] The handle support 12 is a block-shaped structural member, and a rear recessed handle placement groove 12-1 is provided in the middle of the front end of the handle support 12. The handle support 12 is divided into two upper and lower parallel structures with the same structure arranged in the box body 11. The two handle supports 12 are integrally or fixedly connected with the front end surface of the rear plate of the box body 11 at their rear parts.

[0038] The padlock tongue 13 is a strip-shaped structural member, and a padlock hole 13 - 1 is provided at the front end of the padlock tongue 13 . The padlock tongue 13 is integrally connected with the box body 11 or fixedly connected to the box body 11 and is located above the upper handle support 12 of the two handle supports 12 .

[0039] The box cover 14 is mainly composed of a base plate 14-1, a padlock accommodating box 14-2, an outer cover plate 14-3 and a handle 14-4; the base plate 14-1 is a plate body member whose outer peripheral size matches the front end opening of the box body 11, and the base plate 14-1 is provided with a hollow square hole whose size matches the padlock accommodating box 14-2, and the padlock accommodating box 14-2 is a square box body member with a front end opening, the padlock accommodating box 14-2 is arranged at the rear of the square hole of the base plate 14-1 and is integrally connected with the rear end face of the base plate 14-1 or fixedly connected, and a bolt through hole 14-2-1 that penetrates forward and backward is provided at the middle of the upper part of the rear plate of the padlock accommodating box 14-2; when locking, the front end of the padlock bolt 13 passes through the bolt through hole 14-2-1 of the padlock accommodating box 14-2; the padlock hole 13-1 of the padlock bolt 13 is exposed in the padlock accommodating box 14-2. The outer cover plate 14-3 is a plate member whose size and shape match the front opening of the padlock receiving box 14-2. The outer cover plate 14-3 is movably connected to the base plate 14-1 at its upper part, preferably by hinged connection; when the outer cover plate 14-3 is not lifted, the front opening of the padlock receiving box 14-2 is completely covered. The box cover 14 is movably connected to the lower part of the front opening of the box body 11 at the lower part of its base plate 14-1, preferably by hinged connection; the handle 14-4 is integrally or fixedly arranged at the middle of the upper part of the front surface of the base plate 14-1. When in use, the box cover 14 can be opened by grasping the handle 14-4 and moving it forward and downward, so that the front opening of the box body 11 is completely exposed for operation.

[0040] The locking rod installation limiter 15 is a structural member having a locking rod through hole 15-1 which passes through the upper and lower directions; there are two locking rod installation limiters 15 with the same structure, and the two locking rod installation limiters 15 are both integrated with or fixedly connected to the rear plate of the box body 11, and the upper and lower parts of the connection through hole of the two locking rod installation limiters 15 in the middle of the rear plate of the box body 11 are mirror-imaged.

[0041] See also Fig.11 and Fig. 9The push-pull handle 2 is mainly composed of an operating handle 21, a connecting rod 22 and a reinforcing member 23. The operating handle 21 is a round rod. The outer diameter of the operating handle 21 matches the size of the handle placement groove 12-1 of the handle support 12. A through installation circular hole is radially provided in the middle of the operating handle 21. The connecting rod 22 is integrally composed of a cylindrical portion 22-1 and a truncated cone portion 22-2. The maximum outer diameter of the truncated cone portion 22-2 is the same as the outer diameter of the cylindrical portion 22-1. The outer diameter of the cylindrical portion 22-1 matches the inner diameter of the connecting through hole provided in the middle of the rear plate of the box body 11. The connecting rod 22 is provided with a through inner connecting member installation hole 22-3 along the axial direction, and the hole diameter of the inner connecting member installation hole 22-3 in the cylindrical portion 22-1 is larger than the hole diameter of the inner connecting member installation hole 22-3 in the truncated cone portion 22-2, so as to facilitate the installation and matching with the inner connecting member 3; the connecting rod 22 is fixedly connected to the operating handle 21 by matching the front end of its cylindrical portion 22-1 with the installation circular hole of the operating handle 21. The reinforcement member 23 is fixedly arranged on the outer periphery of the connection between the connecting rod 22 and the operating handle 21; the reinforcement member 23 is arranged as a preferred method to increase the strength of the connection between the connecting rod 22 and the operating handle 21.

[0042] See also Figure 5 The inner connecting member 3 is used to detachably and fixedly connect the push-pull handle 2 and the outer connecting member 4; the inner connecting member 3 can be bolts or screws, preferably bolts. The inner connecting member 3 is arranged in the inner connecting member installation hole 22-3 of the connecting rod 22 of the push-pull handle 2, and the end of the inner connecting member 3 with threads extends backward from the rear port of the truncated cone portion 22-2 of the push-pull handle 2, and the operating end of the inner connecting member 3 is in clearance with the front end of the truncated cone portion 22-2 of the push-pull handle 2, so that the push-pull handle 2 can rotate relative to the inner connecting member 3, that is, the inner connecting member 3 is sleeved with the push-pull handle 2.

[0043] See also Fig.12 and Figure 5 The external connection member 4 is mainly composed of a connection plate 41 and a connection pipe 42; the rear end surface of the connection plate 41 is provided with two circular connection holes 41-1 in the upper and lower parts; the connection pipe 42 is integrally or fixedly connected with the middle part of the front end surface of the connection plate 41, and an internal thread for connection is provided in the connection pipe 42. The front end of the external connection member 4 is connected to the middle of the rear plate of the box body 11 by the connection through the hole in the middle of the rear plate of the box body 11, and the connection plate 41 of the external connection member 4 cooperates with the rear plate of the box body 11 to limit the maximum travel of the external connection member 4 forward.

[0044] The steel wire tube 5 and the locking rod 6 are respectively provided with two pieces at the top and the bottom. The lower end of the locking rod 6 located at the top passes through the locking rod through hole 15-1 of the locking rod installation stopper 15 of the lock body 1 located at the top from top to bottom and is fixedly connected with the upper end of the steel wire tube 5 located at the top. The upper end of the locking rod 6 located at the bottom passes through the locking rod through hole 15-1 of the locking rod installation stopper 15 of the lock body 1 located at the bottom and is fixedly connected with the lower end of the steel wire tube 5 located at the bottom. The lower end of the steel wire tube 5 located at the top is inserted into the upper connecting hole 41-1 on the connecting plate 41 of the outer connecting member 4 and is fixedly connected with the connecting plate 41. The upper end of the steel wire tube 5 located at the bottom is inserted into the lower connecting hole 41-1 on the connecting plate 41 of the outer connecting member 4 and is fixedly connected with the connecting plate 41. Thus, the push-pull handle 2, the inner connecting member 3, the outer connecting member 4 and the two steel wire tubes 5 together constitute a driving mechanism for the two locking rods 6. The two locking rods are provided with stoppers 15 to ensure that the two locking rods do not deviate accurately in the vertical movement direction to avoid locking difficulties. The steel wire tube 5 is a commercially available part.

[0045] A padlock 7 is provided, and the padlock 7 cooperates with the padlock hole 13-1 of the padlock tongue 13 extending forward from the lock tongue through hole 14-2-1 of the padlock receiving box 14-2 of the box cover 14 to lock the box cover 14. The padlock 7 is a commercially available part.

[0046] The push-pull type ring main unit door lock structure of this embodiment, its unlocking and locking states and the unlocking and locking operation process are briefly described as follows:

[0047] See also Figures 1 to 7 The push-pull type ring main unit door lock structure of this embodiment, when it is in the locked state, the operating handle 21 of the push-pull handle 2 is horizontally located between the two handle supports 12 of the lock body 1, the rear part of the connecting rod 22 of the push-pull handle 2 is located in the connecting through hole of the rear plate of the box body 11 of the lock body 1, and the outer ends of the two locking rods 6 are inserted into the jacks provided on the ring main unit cabinet body so that the ring main unit door is in the locked state; the front end of the padlock tongue 13 of the lock body 1 passes through the lock tongue through hole 14-2-1 of the padlock accommodating box 14-2 of the box cover 14 and is exposed in the padlock accommodating box 14-2, the padlock 7 cooperates with the padlock hole 13-1 on the padlock tongue 13 to lock the box cover 14, and the outer cover plate 14-3 is in a state of completely covering the front end opening of the padlock accommodating box 14-2.

[0048] In the aforementioned locked state, when the ring network cabinet door needs to be opened, the outer cover plate 14-3 is first lifted to open and the padlock 7 is removed, and then the box cover 14 is opened by grasping the handle 14-4 of the box cover 14 and moving forward and downward to make the front end opening of the box body 11 completely exposed, and then the push-pull handle 2 is pulled forward, and the two locking rods 6 are moved in the up and down directions toward the middle of the rear part of the lock body 1 through the sequential transmission of the inner connecting piece 3, the outer connecting piece 4 and the steel wire tube 5, so that the outer ends of the two locking rods 6 are disengaged from the sockets provided on the ring network cabinet body, thereby unlocking the ring network cabinet door; after the push-pull handle 2 is pulled into place, it is rotated 90°, and the operating handle 21 of the push-pull handle 2 is placed in the handle placement groove 12-1 of the two handle support members 12 of the lock body 1 in a direction perpendicular to the ground, and the unlocked state is as follows: Figure 8 and Fig. 9 shown.

[0049] In the unlocked state, when the ring main cabinet door needs to be locked, first pull the push-pull handle 2 to disengage the handle placement groove 12-1 of the two handle support members 12, then rotate the push-pull handle 2 90 degrees to make the operating handle 21 of the push-pull handle 2 parallel to the ground, and then push the push-pull handle 2 backward, through the sequential transmission of the inner connecting member 3, the outer connecting member 4 and the steel wire tube 5, the two locking rods 6 move away from the rear middle of the lock body 1 in the up-down direction, so that the outer ends of the two locking rods 6 are inserted into the jacks provided on the ring main cabinet body, and the ring main cabinet door is locked; then close the box cover 14 upward, lock the padlock 7, and put down the outer cover plate 14-3 of the box cover 14. The box cover 14 with the padlock 7 also plays a limiting role on the push-pull handle 2 to prevent the push-pull handle 2 from popping out of the box body 11.

[0050] The above embodiments are descriptions of specific implementation methods of the present invention rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A push-pull type ring main unit door lock structure, comprising two locking rods which are matched with the sockets on the ring main unit body and are arranged in an upper and lower manner when in use, characterized in that: It also includes a lock body fixedly arranged on the door of the ring network cabinet as the installation basis of the door lock structure, a push-pull drive mechanism arranged on the lock body for driving two lock rods to move vertically up and down through forward and backward push-pull movements to achieve locking and unlocking of the door of the ring network cabinet, and a padlock for locking the lock body; the push-pull drive mechanism includes a push-pull handle, an inner connecting piece, an outer connecting piece and two steel wire tubes; the push-pull handle is sleeved with the inner connecting piece and can rotate relative to the inner connecting piece, the inner connecting piece is threadedly connected to the outer connecting piece, and one end of each of the two steel wire tubes is fixedly connected to the outer connecting piece; the other end of each of the two steel wire tubes is fixedly connected to one end of the two lock rods close to the lock body; The lock body comprises a box body, a handle support, a padlock tongue, a box cover and a lock rod installation limiter; The front end of the box body is open, and a through hole penetrating in the front and rear directions is provided in the middle of the rear plate of the box body as a connecting through hole; the handle support is a block-shaped structural member, and a handle placement groove recessed in the middle of the front end of the handle support is provided, and the handle support is divided into two upper and lower parallel fixed structures with the same structure in the box body; the padlock tongue is fixedly arranged in the box body and located above the two handle supports, and a padlock hole is provided at the front end of the padlock tongue; the box cover includes a base plate, a padlock accommodating box, an outer cover plate and a handle; The base plate is a plate member with an outer peripheral size matching the front end opening of the box body, the base plate is provided with a hollow square hole with a size matching the padlock receiving box, the padlock receiving box is a box member with a front end opening, the padlock receiving box is arranged behind the square hole of the base plate and is integrally or fixedly connected with the rear end surface of the base plate, and a lock tongue through hole that penetrates in the front and rear directions is provided in the middle of the upper part of the rear plate of the padlock receiving box; when locking, the front end of the padlock tongue passes through the lock tongue through hole of the padlock receiving box; the padlock hole of the padlock tongue is exposed in the padlock receiving box, and the padlock cooperates with the padlock hole of the padlock tongue to lock the box cover on the box body; The outer cover plate is movably connected to the base plate at its upper part, and the front end opening of the padlock accommodating box is completely covered when the outer cover plate is not lifted; the box cover is movably connected to the lower part of the front end opening of the box body at the lower part of the base plate; the handle is integrally or fixedly arranged at the middle of the upper part of the front end surface of the base plate; the lock rod installation limiter is a structural member provided with a lock rod through hole that passes through from top to bottom; the lock rod installation limiter is provided with two lock rod installation limiters with the same structure, the two lock rod installation limiters are integrally or fixedly connected to the rear plate of the box body, and the upper and lower parts of the connection through holes of the two lock rod installation limiters at the middle of the rear plate of the box body are mirror-imaged; each end of the two lock rods close to the lock body passes through the lock rod through holes of the corresponding lock rod installation limiters respectively, and is fixedly connected to each end of the corresponding steel wire tube; The push-pull handle comprises an operating handle and a connecting rod. The operating handle is a round rod, and a through mounting circular hole is radially arranged in the middle of the operating handle. The connecting rod is integrally composed of a cylindrical portion and a truncated cone portion, and the maximum outer diameter of the truncated cone portion is the same as the outer diameter of the cylindrical portion, and the outer diameter of the cylindrical portion is adapted to the inner diameter of the connection through hole of the box body. The connecting rod is axially provided with a through inner connecting member mounting hole, and the hole diameter of the inner connecting member mounting hole in the cylindrical portion is larger than the hole diameter in the truncated cone portion. The connecting rod is fixedly connected to the operating handle by matching the front end of the cylindrical portion with the mounting circular hole of the operating handle. The push-pull handle further comprises a reinforcement member, which is fixedly arranged at the periphery of the connection between the connecting rod and the operating handle to increase the strength of the connection; The inner connecting piece is a bolt, which is arranged in the inner connecting piece mounting hole of the connecting rod of the push-pull handle, and one end of the inner connecting piece provided with a thread extends backward from the rear port of the truncated cone portion of the push-pull handle, and the operating end of the inner connecting piece is clearance-matched with the front end of the truncated cone portion of the push-pull handle, so that the push-pull handle can rotate relative to the inner connecting piece.

2. The push-pull type ring main unit door lock structure according to claim 1 is characterized in that: The external connecting piece includes a connecting plate and a connecting pipe; the rear end surface of the connecting plate is provided with two circular connecting holes, one above the other; the connecting pipe is integrally or fixedly connected to the middle of the front end surface of the connecting plate, and an internal thread for connection is provided in the connecting pipe; the external connecting piece is fixedly connected to the internal connecting piece by threading the front end of its connecting pipe in the connecting hole of the box body; the external connecting piece is plugged and fixedly connected to each end of the two steel wire pipes by the two connecting holes of its connecting plate.

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