Civil air defense door locking seat

Abstract

The invention relates to the technical field of civil air defense doors, and discloses a civil air defense door locking seat which comprises a base arranged at the position of a lower frame of a civil air defense door frame, a containing groove is formed in the upper end of the base, a locking box is arranged in the containing groove, the upper end of the locking box extends out of the containing groove, and a mounting hole is formed in the upper end face of the locking box. A locking plate capable of moving in a reciprocating mode in the vertical direction and an elastic piece used for applying elastic force to the locking plate are arranged in the mounting hole, the locking plate is provided with a bearing face used for bearing the spring bolt, one end of the elastic piece is connected with the locking plate, and the other end of the elastic piece is connected with the bottom wall of the containing groove. The locking plate overcomes the elastic force of the elastic piece to move downwards when being extruded by a spring bolt on a door, and resets upwards under the elastic force of the elastic piece after the spring bolt retreats; when the upper portion of the locking plate is not stressed, the bearing face and the upper end face of the locking box are coplanar, and the effect of improving the locking reliability is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil air defense doors, in particular to a civil air defense door locking seat. BACKGROUND

[0002] In civil air defense projects, civil air defense doors, as important protective components, need to be reliably closed in wartime or emergency situations to meet the safety and protection requirements of blast resistance, airtightness, waterproofness and the like. In order to ensure that the door leaf forms a stable and reliable locking state when closed, the civil air defense door usually adopts a multi-point locking structure, and a plurality of locking points are arranged on the side edges and lower edge of the door leaf. The locking mechanism arranged at the lower edge of the door leaf cooperates with the lock tongue on the door leaf through the locking seat in the door frame or floor to form a lower locking point, thereby improving the overall deformation resistance and sealing performance of the door leaf.

[0003] In existing projects, the lower locking structure usually adopts a fixed locking seat or a pre-buried lock hole box in the lower frame of the door frame. Such a locking seat usually has a recess or a through hole opened on its upper surface for accommodating the lock tongue. When the civil air defense door is closed, the lock tongue on the door leaf is inserted into the recess and cooperates with the internal limiting structure to complete the locking. However, in the state that the door leaf is opened, the recess of the locking seat is in an open state for a long time. During the process of personnel passing, material carrying and subsequent decoration construction, dust, sand, debris and other foreign matters on the ground are easy to fall into and accumulate in the recess, which is not convenient for timely cleaning and will cause the recess to be blocked after a period of use, so that the insertion of the lock tongue is blocked, thereby affecting the normal closing and reliable locking of the civil air defense door. SUMMARY

[0004] In order to improve the problem that the locking recess in the lower locking structure of the existing civil air defense door is prone to foreign matters for a long time, the insertion of the lock tongue is blocked, and the locking reliability is poor, the present application provides a civil air defense door locking seat.

[0005] The present application provides a civil air defense door locking seat, which adopts the following technical scheme: A civil air defense door locking seat, comprising a base provided at the lower frame of a civil air defense door frame, wherein an accommodating groove is opened at the upper end of the base, a locking box is arranged in the accommodating groove, the upper end of the locking box extends out of the accommodating groove, an installation hole is opened on the upper end face of the locking box, a locking plate that can reciprocate in the vertical direction and an elastic member for applying a force to the locking plate are arranged in the installation hole, a bearing surface for bearing the lock tongue is arranged on the locking plate, one end of the elastic member is connected with the locking plate, and the other end of the elastic member is connected with the bottom wall of the accommodating groove, so that the locking plate moves downward against the elastic force of the elastic member when the locking plate is pressed by the lock tongue on the door, and the locking plate resets upward under the elastic force of the elastic member when the lock tongue exits; when the upper part of the locking plate is not stressed, the bearing surface is coplanar with the upper end face of the locking box.

[0006] By adopting the technical scheme, the locking plate in the civil air defense door locking seat can automatically reciprocate along the vertical direction under the action of the elastic member, so that the bearing surface of the locking plate is kept coplanar with the upper end surface of the locking box when no extrusion force of the lock tongue is borne, thereby effectively plugging the containing space in the locking box in the door opening or non-locking state, avoiding the falling and accumulation of dust, sand, decoration debris and other foreign matters in the locking seat; in the door closing process, the lock tongue extrudes the locking plate downward to smoothly insert into the locking seat against the elastic force of the elastic member, and the locking plate is automatically reset to the coplanar state under the elastic force of the elastic member after the lock tongue is withdrawn, so that the smoothness of the lock tongue insertion and extraction process and the locking reliability are ensured, the artificial cleaning and maintenance workload is reduced, and the long-term stability and service life of the lower locking structure of the civil air defense door are improved.

[0007] Optionally, an installation groove extending along the length direction of the locking box is formed in the inner wall of the mounting hole, and an installation block of the locking plate is arranged in the installation groove, which is used for limiting cooperation with the upper inner wall of the installation groove in the vertical movement process of the locking plate to limit the upper stop point position of the locking plate; when the installation block contacts the upper inner wall of the installation groove, the bearing surface is coplanar with the upper end surface of the locking box.

[0008] By adopting the technical scheme, the contact between the installation block and the upper inner wall of the installation groove is used as the upper stop point limiting of the locking plate, so that the highest position of the locking plate can be stably limited when the installation block contacts the upper inner wall of the installation groove, the bearing surface of the locking plate can be reliably kept coplanar with the upper end surface of the locking box, the bearing surface is prevented from being too high or too low due to the over-movement or inaccurate positioning of the locking plate, and a smooth plugging surface can be formed in the door opening or non-locking state, which is beneficial to improve the effect of preventing foreign matters from falling into the locking seat; in addition, since the highest position of the locking plate is borne by the rigid limiting structure, the elastic member can be pre-compressed at this position and a larger elastic member can be selected, so that even if dust, sand and other light foreign matters are accumulated on the bearing surface of the locking plate or limited additional load is borne, the locking plate will not be compressed and settled downward, the plugging surface is prevented from being depressed to expose a gap, and the anti-pollution ability of the locking seat and the guiding stability during the insertion and extraction of the lock tongue are further improved, thereby enhancing the long-term working reliability of the entire locking structure.

[0009] Optionally, the base is provided with a locking structure connecting the base and the locking box, the locking structure comprises a fixed strip arranged on one side of the base and a mounting plate arranged on the side of the locking box facing the fixed strip, an upper end surface of the fixed strip is provided with a fixed groove in communication with the accommodating groove, the mounting plate is inserted into the fixed groove, an upper end surface of the mounting plate is provided with a fixed hole aligned with the fixed groove, an upper side of the mounting plate is provided with a cover plate covering the mounting plate and cooperating with the fixed strip, an adjusting washer is arranged between the cover plate and the mounting plate, the cover plate is provided with a fastening bolt connecting the cover plate, the adjusting washer, the mounting plate and the fixed strip, the cover plate is provided with a countersunk hole accommodating a head of the fastening bolt, and an upper end surface of the cover plate is coplanar with an upper end surface of the locking box.

[0010] By adopting the above technical scheme, the cover plate, the adjusting washer and the mounting plate are connected with the fixed strip on the base through the fastening bolt, the connection structure between the locking box and the base forms a multi-layer clamping and fixing cooperation, the connection strength and the anti-vibration stability of the overall structure are improved, displacement of the locking box caused by bolt loosening or impact vibration in the use process is avoided, the mounting plate is covered by the cover plate, foreign matters, water stains or corrosive particles can be effectively prevented from entering the fixed groove, and the service life of the locking structure is prolonged, the adjusting washer with different thicknesses is adopted, the position of the upper end surface of the cover plate can be changed, when the upper end surface of the cover plate is coplanar with the upper end surface of the locking box, the overall flatness of the upper part of the locking seat is ensured, further, the head of the fastening bolt is inserted into the countersunk hole and does not protrude above the surface of the cover plate, the cooperation and operation of the locking seat with the door leaf or other structures are not affected by the protruding fastening bolt, and the safety and engineering adaptability of the locking seat structure are improved.

[0011] Optionally, the fixed hole is in the shape of a waist hole, the length direction of the fixed hole is consistent with the length direction of the mounting plate, the locking box is provided with adjusting washers located in the accommodating grooves on both sides of the base in the width direction of the base, the adjusting washers are used for adjusting the transverse positioning of the locking box in the accommodating grooves, and upper end surfaces of the adjusting washers protrude out of the accommodating grooves and are coplanar with the upper end surface of the locking box.

[0012] By adopting the above technical scheme, with the help of the fixed hole, the position of the locking box can be finely adjusted along the direction of the fixed strip when the bolt is not completely tightened, so as to compensate for the door frame installation error and the locking box itself machining error, the relative position of the upper bearing surface of the locking box and the lock tongue of the door leaf can be accurately aligned on site, the locking box and the base are reliably locked and connected after the fastening bolt is tightened after being adjusted to the appropriate position, the installation convenience and adaptability of the civil air defense door locking seat are improved, the centering accuracy and the locking reliability when the lock tongue is inserted are ensured, and the later maintenance and replacement are facilitated, in addition, the adjusting washers gap-fill the accommodating grooves, and the upper end of the adjusting washer is coplanar with the locking box, which is helpful to form an overall flat closed surface, and the sealing performance and the anti-foreign matter falling into capability of the locking seat are improved.

[0013] Optionally, a guide structure for guiding the locking plate is arranged in the base, the guide structure comprises a guide seat arranged on the bottom wall of the accommodating groove and a guide column arranged below the locking plate, an upper end of the guide seat is provided with a guide rod extending in the vertical direction, and a guide hole is formed in a side of the guide column away from the locking plate, the guide rod is inserted into the guide hole and slidably connected with the guide hole.

[0014] By adopting the above technical scheme, the guide structure composed of the guide seat, the guide rod and the guide hole in the guide column reliably vertically guides the reciprocating movement of the locking plate under the action of the elastic member, so that the locking plate is prevented from being inclined, shaken or stuck when moving up and down. The sliding connection between the guide rod and the guide hole is conducive to limiting the linear movement of the locking plate along the insertion and extraction direction of the lock bolt, so as to ensure the stability of the relative position relationship between the bearing surface and the upper end surface of the locking box, improve the guiding property and fitting accuracy when the lock bolt is inserted and extracted, and reduce the risk of scratching and abrasion or sticking caused by deviation and inclination. At the same time, the guide structure can also provide additional support when the locking plate is subjected to lateral interference force or local load, so as to maintain the repeatability of the movement track of the locking plate and the reliability of the automatic reset action, and further improve the working stability and service life of the whole civil defense door locking seat under long-term use conditions.

[0015] Optionally, the guide seat extends below the locking box, and the lower end surface of the locking box abuts against the upper end surface of the guide seat.

[0016] By adopting the above technical scheme, on the one hand, the guide seat reliably vertically supports and positions the locking box, so that the weight of the locking box and the load from the pedestrian stepping, the lock bolt impact and the like are preferentially transmitted to the base, and the key moving parts are prevented from bearing the load alone, so as to reduce the stress and deformation of the key moving parts and improve the strength and durability of the whole structure; on the other hand, when the locking structure locks the locking box to the base by means of the fixing strip and the mounting plate, the locking box simultaneously exerts a pressing action on the guide seat, so that the guide seat is in a clamped state in the accommodating groove and is not easy to displace in the horizontal direction, thereby being conducive to maintaining the installation height and posture stability of the locking box in the vertical direction and maintaining the coaxial connection between the guide rod and the guide hole, reducing the risk of deviation and sticking of the locking plate during reciprocating movement, and further improving the guiding accuracy and working reliability of the civil defense door locking seat under long-term use conditions.

[0017] Optionally, the elastic member comprises an installation spring, the installation spring is sleeved outside the guide column, one end of the installation spring abuts against the guide seat, the other end of the installation spring abuts against the locking plate, and the installation spring is in a compressed state when the bearing surface of the locking plate is coplanar with the upper end surface of the locking box.

[0018] By adopting the technical scheme, the installation spring is arranged outside the guide column, the force direction of the installation spring is coaxial with the vertical reciprocating direction of the locking plate, the elastic force transmission path is clear and stable, and the eccentric force is avoided to cause the locking plate to be inclined or stuck; the installation spring is in a pre-compression state when the bearing surface of the locking plate is coplanar with the upper end surface of the locking box, the locking plate has a continuous upward pre-tightening force at the top dead center, which is not only beneficial to the quick and automatic resetting of the locking plate after the lock tongue is withdrawn, but also can cooperate with the limiting structure of the mounting block and the inner wall of the mounting groove to allow the installation spring with greater elastic force to be selected without causing the locking plate to easily sink due to insufficient pre-tightening, so that the sealing surface can still be kept from being pressed into a pit when there are slight foreign matters such as dust and sand on the bearing surface, thereby effectively improving the foreign matter prevention capability of the locking seat and the long-term working reliability of the civil air defense door locking structure.

[0019] Optionally, a guide ring is sleeved with the guide column, a plurality of guide bolts connecting the guide ring and the locking plate are arranged between the guide ring and the locking plate, and the plurality of guide bolts are distributed at intervals around the circumference of the guide column.

[0020] By adopting the technical scheme, the guide column and the locking plate form a rigidly connected whole through the guide ring and the guide bolts, so that the guide column and the locking plate can move synchronously when the locking plate vertically reciprocates; the side of the locking plate away from the guide column is exposed to the outside world and is easy to be corroded and damaged, the guide column and the locking plate can be mutually disassembled, the replaced parts can be reduced during maintenance, and the effects of saving materials and reducing maintenance cost are achieved; the installation spring is arranged in the radial space between the head of the guide bolt and the guide column, which is beneficial to fully utilizing the installation space around the guide column without interfering with the reciprocating cooperation of the guide bolt, so that the installation spring is more uniform in force and more reliable in constraint, the deflection, friction and wear of the installation spring during compression and rebound are reduced, and the stability of the reciprocating movement of the locking plate is further improved.

[0021] Optionally, the base is provided with a locking structure connecting the base and the locking box, the locking structure comprises a fixed strip provided on one side of the base, a mounting plate and a mounting strip provided on the side of the locking box facing the fixed strip, an upper end surface of the fixed strip is provided with a fixed groove in communication with the accommodating groove, the mounting plate is inserted into the fixed groove, an upper end surface of the mounting plate is provided with a fixed hole aligned with the fixed groove, the mounting strip is located above the mounting plate, the mounting plate is provided with a cover plate covering the mounting plate and cooperating with the fixed strip, the cover plate is provided with a limiting groove for inserting the mounting strip, a lower end surface of the cover plate is fixedly connected with a limiting strip located at the end of the mounting plate away from the locking box, an end surface of the limiting strip away from the mounting plate is attached to the inner wall of the fixed groove, an adjusting spring in a compressed state is arranged between the cover plate and the mounting plate, an upper end of the adjusting spring is in abutment with the cover plate, and a lower end of the adjusting spring is in abutment with the mounting plate, the cover plate is provided with a fastening bolt for connecting the cover plate, the mounting plate and the fixed strip, and the cover plate is provided with a countersunk hole for accommodating the head of the fastening bolt; when the lower end surface of the mounting strip is in abutment with the lower inner wall of the limiting groove, the upper end surface of the cover plate is coplanar with the upper end surface of the locking box.

[0022] By adopting the above technical scheme, the connection between the locking box and the base is changed from simple rigid locking to a combined structure with elastic pre-tightening and self-positioning function by adopting the locking structure comprising the fixed strip, the mounting plate, the mounting strip, the cover plate, the limiting groove, the limiting strip and the adjusting spring in a compressed state: on the one hand, the mounting plate is inserted into the fixed groove and locked by the fastening bolt on the cover plate, and the abutment of the limiting strip arranged at the lower end of the cover plate with the inner wall of the fixed groove can reliably limit the transverse position of the mounting plate in the fixed groove, preventing the locking box from moving or loosening during use; on the other hand, the lower end of the mounting strip is inserted into the limiting groove of the cover plate and in abutment with the lower inner wall of the limiting groove, and the adjusting spring arranged between the cover plate and the mounting plate is kept in continuous compression, so that the cover plate is reliably pressed towards the mounting plate under the pre-tightening force of the adjusting spring, and when the mounting strip contacts the lower inner wall of the limiting groove in place, the upper end surface of the cover plate is automatically limited at a height position coplanar with the upper end surface of the locking box, so that in the case of assembly error of the locking seat, the height of the locking box can still be automatically compensated and precisely positioned through the slight deformation of the adjusting spring, and the height adjustment of the cover plate is more convenient than the height adjustment of the cover plate by different specifications of adjusting shims; the countersunk hole on the cover plate enables the head of the fastening bolt to be embedded in the cover plate, without affecting the flatness of the upper surface, and the whole improves the anti-vibration reliability of the connection between the locking box and the base, ensures the flatness of the upper surface of the locking seat and the centering accuracy with the lock tongue of the door leaf, and facilitates long-term maintenance of good locking performance and anti-foreign object falling capacity.

[0023] Optionally, the locking box is provided with an intelligent detection device for detecting whether the locking tongue of the civil defense door and the locking seat are locked, a first groove is formed in the upper inner wall of the mounting groove, a second groove is formed in the inner wall of the mounting groove away from the mounting hole, the intelligent detection device comprises a first position sensor arranged in the first groove, a second position sensor arranged in the second groove, and a control module arranged in the mounting groove and used for judging whether the locking seat is in a locking state or a reset state, and the first position sensor and the second position sensor are both used for detecting the position of the mounting block in the mounting groove and outputting a detection signal to the control module.

[0024] By adopting the technical scheme, the first position sensor and the second position sensor can directly monitor the position of the mounting block in the mounting groove without changing the original mechanical transmission chain, so as to convert the movement state of the locking plate / mounting block into an identifiable electrical signal; the control module judges whether the mounting block is at a predetermined upper dead point or lower dead point according to the detection results of the first position sensor and the second position sensor, so as to distinguish whether the locking seat is in a locking state or a reset state, realize real-time discrimination of the cooperation state of the locking tongue of the civil defense door and the locking seat, and effectively avoid the state misjudgment of "wrongly considering that it has been locked" caused by the fact that the locking tongue is not completely inserted or the locking plate is not completely reset; meanwhile, the first position sensor is arranged in the first groove, and the second position sensor is arranged in the second groove, which does not affect the mechanical movement of the locking mechanism and can reduce the direct interference of external mechanical impact, dust and water vapor on the sensor, so as to ensure the stability and long-term reliability of the detection result and provide a basic condition for subsequently leading out the locking state signal to an upper monitoring or alarm system.

[0025] In summary, the present application has at least one of the following beneficial technical effects: 1. The locking plate in the locking seat of the civil defense door can automatically reciprocate along the vertical direction under the action of the elastic element, so that the bearing surface of the locking plate is coplanar with the upper end surface of the locking box when no locking tongue pressing force is borne, thereby effectively blocking the containing space in the locking box in the door opening or non-locking state, avoiding the falling and accumulation of dust, sand, decoration debris and other foreign matters in the locking seat; in the door closing process, the locking tongue presses the locking plate downward to smoothly insert into the locking seat, and the locking plate automatically resets to the coplanar state under the elastic force of the elastic element after the locking tongue is withdrawn, so that the smoothness of the locking tongue insertion and extraction process and the locking reliability are ensured, the artificial cleaning and maintenance workload is reduced, and the long-term stability and service life of the lower locking structure of the civil defense door are improved. 2. The guide structure composed of the guide seat, the guide rod, the guide column, the guide ring and the guide bolt ensures the stability of the guide of the locking plate in the reciprocating movement and the smoothness of the locking action. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of embodiment 1 of the present application; Figure 2 is an exploded view highlighting the locking seat in embodiment 1; Figure 3 is a sectional view along line A-A in Figure 1 embodiment 1; Figure 4 is a sectional view highlighting the locking structure in embodiment 2; Figure 5 is a structural schematic diagram highlighting the intelligent detection device in embodiment 3.

[0027] Reference signs: 1, base; 11, accommodating groove; 12, adjusting pad plate; 2, locking box; 21, mounting hole; 22, mounting groove; 23, first groove; 24, second groove; 3, locking plate; 31, mounting block; 4, elastic member; 5, locking structure; 51, fixed strip; 511, fixed groove; 512, assembly hole; 513, second positioning groove; 52, mounting plate; 521, fixed hole; 53, fastening bolt; 54, cover plate; 541, counterbore; 542, limiting groove; 543, first positioning groove; 55, adjusting washer; 551, adjusting hole; 56, mounting strip; 57, limiting strip; 58, adjusting spring; 6, guide structure; 61, guide column; 611, guide hole; 62, guide seat; 621, guide ring; 63, guide rod; 64, guide bolt; 65, guide pipe; 7, intelligent detection device; 71, first position sensor; 72, second position sensor; 73, control module. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1-5 The present application will be further described in detail.

[0029] Embodiment 1 The present embodiment discloses a civil air defense door locking seat. Referring to Figure 1 and Figure 2 , a civil air defense door locking seat comprises a base 1, a locking box 2, a locking plate 3, an elastic member 4, and a locking structure 5.

[0030] Referring to Figure 2 , the base 1 is embedded into a prefabricated groove of the lower frame of the civil air defense door frame. The upper end surface of the base 1 is provided with an accommodating groove 11. The locking box 2 is arranged in the accommodating groove 11, and the upper end of the locking box 2 protrudes out of the accommodating groove 11.

[0031] Referring to Figure 1 and Figure 2The locking structure 5 is used to connect the base 1 with the locking box 2. The locking structure 5 is provided with two, and the two locking structures 5 are symmetrical to each other. One locking structure 5 is located at one side of the base 1 along the length direction, and the other locking structure 5 is located at the other end of the base 1 along the length direction. In other embodiments, one locking structure 5 is located at one side of the base 1 along the width direction, and the other locking structure 5 is located at the other end of the base 1 along the width direction.

[0032] Referring to Figure 2 The locking structure 5 includes a fixed strip 51, a mounting plate 52, a fastening bolt 53, a cover plate 54 and an adjusting washer 55. The fixed strip 51 is fixedly connected with the side surface of the base 1 along the length direction. The upper end surface of the fixed strip 51 is provided with a fixed groove 511, and the fixed groove 511 is open to the side of the locking box 2 and communicates with the accommodating groove 11. Two assembly holes 512 are provided on the bottom wall of the fixed groove 511, and the two assembly holes 512 are distributed along the width direction of the base 1.

[0033] Referring to Figure 2 and Figure 3 The mounting plate 52 is fixedly connected with the side of the locking box 2 facing the fixed strip 51. The mounting plate 52 is inserted into the fixed groove 511 and supported on the bottom wall of the fixed groove 511. When the mounting plate 52 abuts against the bottom wall of the fixed groove 511, a gap is left between the lower end surface of the locking box 2 and the bottom wall of the accommodating groove 11.

[0034] Referring to Figure 2 The upper end surface of the mounting plate 52 is provided with two fixed holes 521, and the two fixed holes 521 are distributed along the length direction of the mounting plate 52. The two fixed holes 521 are each in the shape of a waist hole. The length direction of the fixed hole 521 is consistent with the length direction of the mounting plate 52.

[0035] Referring to Figure 2 The adjusting washer 55 is arranged in the fixed groove 511 and above the mounting plate 52. The adjusting washer 55 is provided with two adjusting holes 551, and the two adjusting holes 551 are each in the shape of a waist hole. The length direction of the adjusting hole 551 is consistent with the length direction of the adjusting washer 55. Each adjusting hole 551 is aligned with one fixed hole 521.

[0036] Referring to Figure 1 and Figure 2 The cover plate 54 is arranged in the fixed groove 511 and above the mounting plate 52. The cover plate 54 seals the fixed groove 511. The side of the cover plate 54 away from the mounting plate 52 extends out of the fixed groove 511. The adjusting washer 55 is provided in different specifications with different thicknesses, so as to change the height of the upper end surface of the cover plate 54. In this embodiment, the upper end surface of the cover plate 54 is coplanar with the upper end surface of the locking box 2. The upper end surface of the cover plate 54 is provided with two countersunk holes 541, and the two countersunk holes 541 are each aligned with one fixed groove 511.

[0037] Referring to Figure 1 and Figure 2 , the number of fastening bolts 53 is the same as the number of assembly holes 512. The fastening bolts 53 are screwed into the assembly holes 512 through the countersunk holes 541, the adjusting holes 551 and the fixing holes 521, so as to form a rigidly connected whole of the cover plate 54, the adjusting gasket 55, the fixing strip 51 and the mounting plate 52. At this time, the heads of the fastening bolts 53 are in the countersunk holes 541, and the heads of the fastening bolts 53 do not protrude above the surface of the cover plate 54. In other embodiments, the shanks of the fastening bolts 53 are screwed into the lower frame of the civil air defense door in sequence through the cover plate 54, the adjusting gasket 55, the fixing strip 51 and the mounting plate 52, so as to install the base 1 onto the lower frame of the civil air defense door frame, and realize another installation mode of the base 1 and the civil air defense door frame.

[0038] Referring to Figure 1 and Figure 2 , two adjusting gaskets 12 are arranged on the bottom wall of the accommodating groove 11, one adjusting gasket 12 is located on one side of the locking box 2 along the width direction, and the other adjusting gasket 12 is located on the other side of the locking box 2 along the width direction. One side surface of the adjusting gasket 12 is attached to the side surface of the locking box 2, and the remaining side surfaces of the adjusting gasket 12 are attached to the inner wall of the accommodating groove 11. The upper end surface of the adjusting gasket 12 is coplanar with the upper end surface of the locking box 2.

[0039] Referring to Figure 2 and Figure 3 , the mounting hole 21 is arranged on the upper end surface of the locking box 2. The inner wall of the mounting hole 21 is provided with two mounting grooves 22 extending along the length direction of the locking box 2. The two mounting grooves 22 are distributed along the length direction of the locking box 2 and symmetrically distributed along the axis of the mounting hole 21. The mounting groove 22 is communicated with the mounting hole 21 towards one side of the vertical central axis of the locking box 2.

[0040] Referring to Figure 1 and Figure 2 , the locking plate 3 is arranged in the mounting hole 21, and the transverse cross-sectional shape of the locking plate 3 is adapted to the opening shape of the mounting hole 21. In this embodiment, the horizontal circumferential surface of the locking plate 3 includes two planes and two arc surfaces, and the two planes are parallel to each other. The two arc surfaces are located between the two planes and are distributed along the length direction of the base 1. In other embodiments, the opening shape of the mounting hole 21 and the transverse cross-sectional shape of the locking plate 3 can adopt other shapes such as circular, rectangular and the like, which are the same as the cross-sectional shape of the lock tongue to be inserted into the locking box 2.

[0041] Referring to Figure 2The locking plate 3 is provided with a bearing surface, which is a horizontal surface and used for bearing the locking tongue. An installation block 31 is fixedly connected to the arc surface and inserted into the installation slot 22, and the installation block 31 is in abutment with the side inner wall of the installation slot 22, so that the locking plate 3 is not easy to tilt or jam in the locking box 2, and the locking plate 3 stably rises and falls in the locking box 2. When the installation block 31 is in abutment with the bottom wall of the installation slot 22, the bearing surface is coplanar with the upper end surface of the locking box 2.

[0042] Referring to Figure 2 and Figure 3 , the base 1 is provided with a guide structure 6 for providing guidance to the locking plate 3. The guide structure 6 includes a guide column 61, a guide seat 62 and a guide rod 63.

[0043] Referring to Figure 2 and Figure 3 , the guide seat 62 is arranged on the bottom wall of the accommodating slot 11 and the side surface of the guide seat 62 extends directly below the locking box 2. The upper end surface of the guide seat 62 is in abutment with the lower end surface of the locking box 2. The guide rod 63 is fixedly connected to the upper end surface of the guide seat 62. The guide rod 63 extends upward in the vertical direction and is inserted into the installation hole 21 of the locking box 2.

[0044] Referring to Figure 2 and Figure 3 , the end surface of the guide seat 62 facing the guide rod 63 is fixedly connected with a guide tube 65. The guide tube 65 surrounds the guide rod 63 and is sleeved outside the guide rod 63. The inner diameter of the guide tube 65 is greater than the outer diameter of the guide rod 63.

[0045] Referring to Figure 2 and Figure 3 , the guide column 61 is arranged below the locking plate 3, and the lower end surface of the guide column 61 is provided with a guide hole 611 for the insertion of the guide rod 63. The length of the guide column 61 is not less than the length of the guide rod 63. The guide column 61 is sleeved with a guide ring 621. Four guide bolts 64 connecting the guide ring 621 and the locking plate 3 are arranged between the guide ring 621 and the locking plate 3.

[0046] Referring to Figure 2 and Figure 3 , the elastic member 4 is arranged in the accommodating slot 11. The elastic member 4 includes an installation spring. The installation spring is in a compressed state. The installation spring is sleeved outside the guide column 61 and is in the guide tube 65. The upper end of the installation spring is in abutment with the lower end surface of the guide ring 621, and the installation spring is between the head of the guide bolt 64 and the guide column 61 in the radial direction; the lower end of the installation spring is in abutment with the upper end surface of the guide seat 62. In other embodiments, the lower end of the installation spring is in abutment with the lower inner wall of the installation slot 22.

[0047] When the locking plate 3 is pressed by the locking tongue of the civil air defense door, the locking plate 3 is moved downward against the elastic force of the elastic member 4, and when the locking tongue is withdrawn from the locking box 2, the locking plate 3 is driven to reset upward by the force of the elastic member 4 until the mounting block 31 abuts against the upper inner wall of the mounting groove 22.

[0048] The implementation principle of the embodiment 1 is that when the door leaf is closed, the locking tongue presses the locking plate 3 downward to move the guide column 61 and the guide ring 621 downward against the elastic force of the mounting spring, and the locking tongue is smoothly inserted into the locking box 2; when the locking tongue is withdrawn, the mounting spring releases the elastic potential energy to push the guide ring 621, the guide column 61 and the locking plate 3 upward until the mounting block 31 abuts against the upper inner wall of the mounting groove 22, at which position the bearing surface is coplanar with the upper end surface of the locking box 2 to form a flat closed surface to prevent foreign matters from entering the locking box 2, thereby completing the function of automatic resetting of the locking plate 3.

[0049] Embodiment 2 With reference to Figure 4 The difference between the embodiment and the embodiment 1 is that the locking structure 5 does not include the adjusting gasket 55. The end surface of the locking box 2 towards the mounting plate 52 is fixedly connected with a mounting strip 56, and the upper end surface of the mounting strip 56 is coplanar with the upper end surface of the locking box 2.

[0050] With reference to Figure 4 The upper end surface of the cover plate 54 is provided with a limiting groove 542, and the limiting groove 542 penetrates through the cover plate 54 towards the locking box 2. When the bottom wall of the limiting groove 542 abuts against the lower end surface of the mounting strip 56, the upper end surface of the cover plate 54 is coplanar with the upper end surface of the locking box 2.

[0051] With reference to Figure 4 The lower end surface of the cover plate 54 is fixedly connected with a limiting strip 57. The side of the limiting strip 57 away from the locking box 2 is coplanar with the side of the cover plate 54 away from the locking box 2. The limiting strip 57 is located at the side of the mounting plate 52 away from the locking box 2, and the end surface of the cover plate 54 away from the locking box 2 and the side of the limiting strip 57 away from the locking box 2 are both attached to the inner wall of the fixing groove 511 away from the accommodating groove 11.

[0052] With reference to Figure 4 The side of the cover plate 54 towards the mounting plate 52 is provided with a first positioning groove 543. The side of the mounting plate 52 towards the cover plate 54 is provided with a second positioning groove 513, and the second positioning groove 513 is aligned with the first positioning groove 543.

[0053] With reference to Figure 4 An adjusting spring 58 is arranged between the cover plate 54 and the mounting plate 52, and the adjusting spring 58 is in a compressed state. One end of the adjusting spring 58 is inserted into the second positioning groove 513 and abuts against the bottom wall of the second positioning groove 513, and the other end of the adjusting spring 58 is inserted into the first positioning groove 543 and abuts against the bottom wall of the first positioning groove 543.

[0054] With reference to Figure 4 , the fastening bolt 53 is threaded to the lower frame of the civil air defense door frame in sequence through the cover plate 54, the mounting plate 52 and the fixing strip 51, that is, the base 1 is mounted to the lower frame of the civil air defense door frame.

[0055] The implementation principle of the embodiment 2 is that the locking box 2 transmits the height reference of the locking box 2 to the cover plate 54 through the cooperation of the mounting strip 56 and the limiting groove 542 of the cover plate 54, and the adjusting spring 58 provides a continuous upward pre-tightening force between the cover plate 54 and the mounting plate 52, so that the cover plate 54 is elastically pressed to the mounting plate 52 and the lower wall of the fixing groove 511, thereby realizing the automatic compensation and stable locking of the locking box 2 relative to the base 1 in the height direction, and realizing the coplanar of the upper end surface of the cover plate 54 and the upper end surface of the locking box 2.

[0056] Embodiment 3 With reference to Figure 5 , the difference between the embodiment and the embodiment 1 is that the intelligent detection device 7 is arranged in the locking box 2, which is used for detecting whether the locking tongue of the civil air defense door is inserted into the locking seat.

[0057] With reference to Figure 5 , the intelligent detection device 7 includes a first position sensor 71, a second position sensor 72, a control module 73 and an alarm module. The control module 73 is fixedly connected with the lower inner wall of the mounting groove 22.

[0058] With reference to Figure 5 , the upper inner wall of the mounting groove 22 is provided with a first recess 23, and the upper inner wall of the mounting groove 22 and the side wall of the mounting groove 22 are both provided with a first guide groove, and the two first guide grooves are communicated. The first position sensor 71 is arranged in the first recess 23, and a first lead wire is arranged in the first guide groove. One side of the first lead wire is electrically connected with the first position sensor 71, and the other side of the first lead wire is electrically connected with the control module 73.

[0059] With reference to Figure 5 , the inner wall of the mounting groove 22 along the width direction of the locking box 2 is provided with a second recess 24, and the upper inner wall of the mounting groove 22 and the side wall of the mounting groove 22 are both provided with a second guide groove, and the second guide groove extends downward. The second recess 24 is provided with the second position sensor 72. A second lead wire is arranged in the second guide groove. One side of the second lead wire is electrically connected with the second position sensor 72, and the other side of the second lead wire is electrically connected with the control module 73.

[0060] With reference to Figure 5The first position sensor 71 and the second position sensor 72 are both used to detect the position of the mounting block 31 in the mounting groove 22 and output a detection signal to the control module 73. When the second position sensor 72 detects the mounting block 31, the locking seat is in the locking state. When the first position sensor 71 detects the mounting block 31, the locking seat is in the reset state.

[0061] With reference to Figure 5 The alarm module is arranged on the lower inner wall of the mounting groove 22 and is electrically connected with the control module 73. The alarm module is convenient for personnel to determine whether the civil air defense door is locked in place, effectively avoiding the negligence of the door not being locked. Further, a remote signal module can be added in the mounting groove 22 to realize remote monitoring.

[0062] Similarly, the intelligent detection device 7 can be applied in the technical solution of Embodiment 2.

[0063] The implementation principle of Embodiment 3 is that when the locking plate 3 moves downward under the extrusion of the locking tongue, the mounting block 31 moves in the mounting groove 22, and the position of the mounting block 31 successively passes through the first position sensor 71 and the second position sensor 72 arranged near different recess positions, so that the position signal output by the sensors changes; the control module 73 receives and analyzes the signals from the two position sensors, determines the position of the locking plate 3 according to the position of the mounting block 31, and determines whether the locking seat is in the reset state or the insertion state of the locking tongue.

[0064] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the common meaning understood by a person with ordinary skill in the art to which the present application belongs. The terms "first", "second", "third" and the like used in the specification and claims of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "one" or "a" and the like do not represent a quantity limitation, but represent the existence of at least one. The terms "including", "containing" and the like mean that the elements or objects appearing before the "including" or "containing" cover the elements or objects listed after the "including" or "containing" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0065] The above description is only the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement and the like made within the design concept of the present application shall be included in the protection scope of the present application.

Claims

1. A locking seat for a civil defense door, characterized in that: The system includes a base (1) installed at the lower frame of the air-raid shelter door. The upper end of the base (1) has a receiving groove (11). A locking box (2) is installed inside the receiving groove (11). The upper end of the locking box (2) extends outside the receiving groove (11). An installation hole (21) is provided on the upper surface of the locking box (2). A locking plate (3) that can reciprocate vertically is installed inside the installation hole (21), as well as an elastic element (4) for applying elastic force to the locking plate (3). The locking plate (3) is provided with a bearing surface for bearing the lock tongue. One end of the elastic element (4) is connected to the locking plate (3), and the other end of the elastic element (4) is connected to the bottom wall of the receiving groove (11) so that the locking plate (3) moves downward against the elastic force of the elastic element (4) when it is squeezed by the lock tongue on the door, and returns to its original position upward under the elastic force of the elastic element (4) after the lock tongue is withdrawn. When there is no force on the upper part of the locking plate (3), the bearing surface is coplanar with the upper end surface of the locking box (2).

2. The air-raid shelter door locking seat according to claim 1, characterized in that: The inner wall of the mounting hole (21) is provided with a mounting groove (22) extending along the length of the locking box (2). The side of the locking plate (3) is provided with a mounting block (31) located in the mounting groove (22). The mounting block (31) is used to limit the upper inner wall of the mounting groove (22) during the vertical movement of the locking plate (3) to limit the upper stop position of the locking plate (3). When the mounting block (31) contacts the upper inner wall of the mounting groove (22), the bearing surface is coplanar with the upper end surface of the locking box (2).

3. The locking seat for a civil defense door according to claim 2, characterized in that: The base (1) is provided with a locking structure (5) connecting the base (1) and the locking box (2). The locking structure (5) includes a fixing strip (51) disposed on one side of the base (1) and a mounting plate (52) disposed on the side of the locking box (2) facing the fixing strip (51). The upper end face of the fixing strip (51) is provided with a fixing groove (511) communicating with the receiving groove (11). The mounting plate (52) is inserted into the fixing groove (511). The upper end face of the mounting plate (52) is provided with a fixing hole (521) aligned with the fixing groove (511). A cover plate (54) is provided above the mounting plate (52) to cover the mounting plate (52) and cooperate with the fixing strip (51). An adjusting shim (55) is provided between the cover plate (54) and the mounting plate (52). A fastening bolt (53) is provided on the cover plate (54) to connect the cover plate (54), the adjusting shim (55), the mounting plate (52) and the fixing strip (51). A countersunk hole (541) for accommodating the head of the fastening bolt (53) is provided on the cover plate (54). The upper end face of the cover plate (54) is coplanar with the upper end face of the locking box (2).

4. The locking seat for a civil defense door according to claim 3, characterized in that: The fixing hole (521) is waist-shaped, and the length direction of the fixing hole (521) is consistent with the length direction of the mounting plate (52). The locking box (2) is provided with adjusting pads (12) in the receiving groove (11) on both sides along the width direction of the base (1). The adjusting pads (12) are used to adjust the lateral positioning of the locking box (2) in the receiving groove (11). The upper end face of the adjusting pad (12) extends out of the receiving groove (11) and is coplanar with the upper end face of the locking box (2).

5. A locking seat for a civil defense door according to claim 3, characterized in that: The base (1) is provided with a guide structure (6) for guiding the locking plate (3). The guide structure (6) includes a guide seat (62) provided on the bottom wall of the receiving groove (11) and a guide post (61) provided below the locking plate (3). The upper end of the guide seat (62) is provided with a guide rod (63) extending in the vertical direction. The guide post (61) has a guide hole (611) on the side away from the locking plate (3) for inserting the guide rod (63) and slidingly engaging with the guide rod (63).

6. A locking seat for a civil defense door according to claim 5, characterized in that: The guide seat (62) extends below the locking box (2), and the lower end face of the locking box (2) abuts against the upper end face of the guide seat (62).

7. A locking seat for a civil defense door according to claim 6, characterized in that: The elastic element (4) includes a mounting spring, which is sleeved outside the guide post (61). One end of the mounting spring abuts against the guide seat (62), and the other end of the mounting spring abuts against the locking plate (3). The mounting spring is in a compressed state when the bearing surface of the locking plate (3) is coplanar with the upper end surface of the locking box (2).

8. A locking seat for a civil defense door according to claim 7, characterized in that: The guide post (61) is fitted with a guide ring (621), and a plurality of guide bolts (64) are provided between the guide ring (621) and the locking plate (3) to connect the two. The plurality of guide bolts (64) are distributed circumferentially around the guide post (61), and the mounting spring is located radially between the head of the guide bolt (64) and the guide post (61).

9. A locking seat for a civil defense door according to claim 2, characterized in that: The base (1) is provided with a locking structure (5) connecting the base (1) and the locking box (2). The locking structure (5) includes a fixing strip (51) on one side of the base (1), a mounting plate (52) and a mounting strip (56) on the side of the locking box (2) facing the fixing strip (51). The upper end face of the fixing strip (51) is provided with a fixing groove (511) communicating with the receiving groove (11). The mounting plate (52) is inserted into the fixing groove (511). The upper end face of the mounting plate (52) is provided with a fixing hole (521) aligned with the fixing groove (511). The mounting strip (56) is located above the mounting plate (52). A cover plate (54) is provided above the mounting plate (52) to cover the mounting plate (52) and cooperate with the fixing strip (51). The cover plate (54) is provided with a limiting groove (542) for the mounting strip (56) to be inserted. A limiting strip (57) is fixedly connected to the lower end face of the cover plate (54) at the end of the mounting plate (52) away from the locking box (2). The end face of the limiting strip (57) away from the mounting plate (52) is in contact with the inner wall of the fixing groove (511). An adjusting spring (58) in a compressed state is provided between the cover plate (54) and the mounting plate (52). The upper end of the adjusting spring (58) abuts against the cover plate (54), and the lower end of the adjusting spring (58) The cover plate (54) is provided with fastening bolts (53) for connecting the cover plate (54), the mounting plate (52) and the fixing strip (51) in contact with the mounting plate (52). The cover plate (54) is provided with countersunk holes (541) for accommodating the heads of the fastening bolts (53). When the lower end face of the mounting strip (56) abuts against the lower inner wall of the limiting groove (542), the upper end face of the cover plate (54) is coplanar with the upper end face of the locking box (2).

10. A locking seat for a civil defense door according to claim 2, characterized in that: The locking box (2) is equipped with an intelligent detection device (7) for detecting whether the lock tongue of the air defense door and the locking seat are locked. The upper inner wall of the mounting groove (22) is provided with a first groove (23), and the inner wall of the mounting groove (22) away from the mounting hole (21) is provided with a second groove (24). The intelligent detection device (7) includes a first position sensor (71) set in the first groove (23), a second position sensor (72) set in the second groove (24), and a control module (73) set in the mounting groove (22) for determining whether the locking seat is in a locked state or a reset state. The first position sensor (71) and the second position sensor (72) are both used to detect the position of the mounting block (31) in the mounting groove (22) and output the detection signal to the control module (73).

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