Aircraft-impact-resistant nuclear power station containment steel bar mechanical connection device

Abstract

The invention relates to the technical field of steel bar mechanical connection, and discloses an aircraft-impact-resistant nuclear power station containment steel bar mechanical connection device which solves the problem that the performance requirement of an aircraft-impact-resistant mechanical connection joint cannot be met at present, the aircraft-impact-resistant nuclear power station containment steel bar mechanical connection device comprises a mechanical sleeve, and a steel bar is arranged on the mechanical sleeve; a connecting mechanism is arranged between the reinforcing steel bar and the mechanical sleeve, a limiting mechanism and a clamping mechanism are arranged on the connecting mechanism, the connecting mechanism comprises an inner plate fixed in the mechanical sleeve, a threaded rod is arranged in the mechanical sleeve, the inner plate is fixedly connected to the outer side of the threaded rod in a sleeving mode, and the end, extending into the mechanical sleeve, of the reinforcing steel bar is fixedly connected with a side threaded cylinder; the outer side of the threaded rod is sleeved with the side threaded cylinder in a threaded mode, the side threaded cylinder abuts against the inner plate, and an outer threaded cylinder is arranged on the outer side of the steel bar; according to the invention, the outer ring can be limited and prevented from moving, so that firm connection between the reinforcing steel bar and the mechanical sleeve can be conveniently realized to meet the performance requirement of aircraft impact resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical connection of steel bars, and in particular relates to a mechanical connection device for steel bars of a nuclear power plant containment vessel that is resistant to aircraft impact. Background Art

[0002] my country's independently developed third-generation nuclear power plants, represented by the "Hualong One", have a nuclear island with a special outer containment shell and protective plant to resist accidents such as aircraft collisions. The plant is a reinforced concrete structure. In the reinforced concrete structure, the steel bars are connected with mechanical sleeve joints. When an aircraft hits, it will generate a huge instantaneous impact load on the concrete structure. If the steel bar connection is destroyed before the steel bar itself, the concrete structure will suffer brittle failure, which is a major threat to the overall safety of the nuclear island structure.

[0003] Traditional mechanical connection technologies for steel bars, such as rib stripping and rolled straight thread mechanical connection, have some problems in practical applications. For example, the steel bars have an elliptical phenomenon, and part of the bottom diameter of the steel bars needs to be stripped off when stripping the ribs, resulting in a high probability that the processed thread head will break at the root of the thread, which cannot meet the performance requirements of mechanical connection joints for aircraft impact resistance. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a nuclear power plant containment steel bar mechanical connection device that is resistant to aircraft impact, which effectively solves the problem that the current performance requirements of mechanical connection joints for aircraft impact resistance cannot be met.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a mechanical connection device for steel bars of a nuclear power plant containment vessel that is resistant to aircraft impact, comprising a mechanical sleeve, a steel bar being provided on the mechanical sleeve, a connecting mechanism being provided between the steel bar and the mechanical sleeve, and a limiting mechanism and a clamping mechanism being provided on the connecting mechanism;

[0006] The connecting mechanism includes an inner plate fixed to the inside of the mechanical sleeve, a threaded rod is provided inside the mechanical sleeve, the inner plate is fixedly sleeved on the outside of the threaded rod, and the end of the steel bar extending to the inside of the mechanical sleeve is fixedly connected to a side threaded tube, the side threaded tube is threadedly sleeved on the outside of the threaded rod, and the side threaded tube abuts against the inner plate, an external threaded tube is provided on the outside of the steel bar, and an external thread 2 is provided on the outside of the steel bar, and the external threaded tube is threadedly sleeved on the outside of the steel bar through the external thread 2, an outer ring is fixedly installed on the outside of the external threaded tube, and a rubber pad is fixedly connected to the side of the outer ring close to the mechanical sleeve, the rubber pad is fitted with the end of the mechanical sleeve, an internal thread is provided on the inner wall of the mechanical sleeve, an external thread is provided on the outside of the external threaded tube, and the external threaded tube is threadedly sleeved on the inside of the mechanical sleeve through the external thread 1 and the internal thread.

[0007] Preferably, the outer side of the mechanical sleeve is symmetrically fixedly connected to two U-shaped round rods, two slides are symmetrically movably sleeved between the two U-shaped round rods, the outer side of the slide is rotatably connected to a side shaft, and the end of the side shaft away from the slide is fixedly connected to a limiting cylinder.

[0008] Preferably, the outer side of the outer ring is fixedly connected with a side rod, the limiting cylinder is sleeved on the outer side of the side rod, and the limiting cylinder abuts against the outer ring.

[0009] Preferably, the top of the mechanical sleeve is fixedly connected to a top plate, which is fixedly sleeved on the middle part of the outer side of the two U-shaped round rods. The top of the top plate is fixedly connected to the U-shaped round rod two, and the outer side of the U-shaped round rod two is movably sleeved with a lifting plate. The top of the slide is rotatably connected to the movable rod, and the top end of the movable rod is rotatably connected to the outer side of the lifting plate.

[0010] Preferably, the top of the top plate is rotatably connected to a support shaft, the top end of the support shaft is fixedly connected to a screw rod, the middle part of the outer side of the U-shaped round rod 2 is fixedly sleeved with a sleeve block, the top end of the screw rod is rotatably connected to the sleeve block, the outer side of the screw rod is threadedly sleeved with a nut, and the lifting plate is fixed to the outer side of the nut.

[0011] Preferably, the limiting mechanism includes an L-shaped round rod fixed to the top of the skateboard, the end of the L-shaped round rod away from the skateboard is fixedly connected to the side plate, the outer side of the L-shaped round rod is movably sleeved with a slider, a spring is fixedly connected between the slider and the side plate, the spring is sleeved on the outer side of the L-shaped round rod, and the side of the slider away from the side plate is fixedly connected to the insertion rod.

[0012] Preferably, a U-shaped handle is fixedly connected to the side of the slider away from the insertion rod, and the U-shaped handle passes through the side plate and is movably connected to the side plate.

[0013] Preferably, a collar is fixedly sleeved on the outer side of the limiting cylinder, and a side of the collar close to the slider is provided with a socket one and a socket two, the inner diameter of the socket one is equal to the inner diameter of the socket two, and the rod is inserted into the socket one.

[0014] Preferably, the clamping mechanism includes a bracket fixed to the outside of the lifting plate, and two limit rods are symmetrically fixedly connected to the bracket. The top ends of the two limit rods extend to the interior of the mechanical sleeve and respectively abut against the bottoms of the two side threaded cylinders. The bottoms of the two side threaded cylinders are fixedly connected to limit rings, and the two limit rods are respectively inserted into the two limit rings.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can realize the dual connection between the steel bar and the mechanical sleeve through the cooperation among the inner plate, the threaded rod, the side threaded cylinder, the steel bar, the second external thread, the external thread cylinder, the first external thread, the internal thread, the outer ring and the rubber pad, and can limit the outer ring to prevent it from moving through the cooperation among the support shaft, the screw rod, the nut, the lifting plate, the second U-shaped round rod, the movable rod, the slide plate, the first U-shaped round rod, the side shaft, the limiting cylinder and the side rod, thereby facilitating the firm connection between the steel bar and the mechanical sleeve to meet the performance requirements of anti-aircraft impact.

[0017] 2. The invention can limit the position of the limit cylinder to prevent it from rotating arbitrarily through the cooperation between the L-shaped round rod, side plate, slider, spring, U-shaped handle, insertion rod, ring, socket one and socket two, thereby facilitating the limit cylinder to be quickly put on the outside of the side rod.

[0018] 3. The invention can limit the side threaded barrel to prevent it from moving through the coordination between the support shaft, screw rod, nut, lifting plate, U-shaped round rod 2, bracket, limit rod and limit ring, thereby further ensuring the stability of the connection between the steel bar and the mechanical sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached figure:

[0021] Figure 1 This is a schematic structural diagram of the mechanical connection device for the containment steel bars of a nuclear power plant that is resistant to aircraft impact according to the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the mechanical sleeve of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the connecting mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the inner plate and the side threaded barrel of the present invention;

[0025] Figure 5 This is a schematic diagram of the top plate structure of the present invention;

[0026] Figure 6 Schematic diagram of the structure of the limiting mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the ring structure of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the clamping mechanism of the present invention.

[0029] In the figure: 1. Mechanical sleeve; 2. Connecting mechanism; 201. Inner plate; 202. Side threaded cylinder; 203. Rubber pad; 204. Lifting plate; 205. Top plate; 206. Limiting cylinder; 207. Externally threaded cylinder; 208. Outer ring; 209. External thread 1; 2010. Threaded rod; 2011. Side rod; 2012. External thread 2; 2013. Slide plate; 2014. Support shaft; 2015. Screw; 2016. U-shaped round rod 1; 2017 , U-shaped round rod 2; 2018, sleeve block; 2019, nut; 2020, movable rod; 2021, side shaft; 3, limiting mechanism; 301, L-shaped round rod; 302, sleeve ring; 303, U-shaped handle; 304, side plate; 305, spring; 306, slider; 307, plug rod; 308, socket one; 309, socket two; 4, clamping mechanism; 401, bracket; 402, limiting ring; 403, limiting rod; 5, steel bar; 6, internal thread. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1-8 The present invention relates to a mechanical connection device for steel bars of a nuclear power plant containment vessel that is resistant to aircraft impact, comprising a mechanical sleeve 1, on which steel bars 5 are provided, a connecting mechanism 2 is provided between the steel bars 5 and the mechanical sleeve 1, and the connecting mechanism 2 is provided with a limiting mechanism 3 and a clamping mechanism 4.

[0032] Embodiment 2, on the basis of embodiment 1, the connecting mechanism 2 includes an inner plate 201 fixed to the inside of the mechanical sleeve 1, a threaded rod 2010 is provided inside the mechanical sleeve 1, the inner plate 201 is fixedly sleeved on the outside of the threaded rod 2010, one end of the steel bar 5 extending to the inside of the mechanical sleeve 1 is fixedly connected with a side threaded cylinder 202, the side threaded cylinder 202 is threadedly sleeved on the outside of the threaded rod 2010, and the side threaded cylinder 202 is in contact with the inner plate 201, the outside of the steel bar 5 is provided with an external threaded cylinder 207, the outside of the steel bar 5 is provided with an external thread 2012, and the external threaded cylinder 207 is connected to the outer side of the threaded rod 2010 by the external thread 2012. 2012 is threadedly sleeved on the outside of the steel bar 5, and an outer ring 208 is fixedly installed on the outside of the external threaded barrel 207. A rubber pad 203 is fixedly connected to the side of the outer ring 208 close to the mechanical sleeve 1. The rubber pad 203 fits the end of the mechanical sleeve 1. An internal thread 6 is provided on the inner wall of the mechanical sleeve 1. An external thread 209 is provided on the outside of the external threaded barrel 207. The external threaded barrel 207 is threadedly sleeved on the inside of the mechanical sleeve 1 through the external thread 209 and the internal thread 6. Two U-shaped round rods 2016 are symmetrically fixedly connected to the outside of the mechanical sleeve 1. Between the two U-shaped round rods 2016 There are two slides 2013 symmetrically and movably connected. The outer side of the slide 2013 is rotatably connected to the side shaft 2021. The end of the side shaft 2021 away from the slide 2013 is fixedly connected to the limiting cylinder 206. The outer side of the outer ring 208 is fixedly connected to the side rod 2011. The limiting cylinder 206 is sleeved on the outer side of the side rod 2011, and the limiting cylinder 206 abuts against the outer ring 208. The top of the mechanical sleeve 1 is fixedly connected to the top plate 205. The top plate 205 is fixedly sleeved on the outer middle part of the two U-shaped round rods 1 2016. The top of the top plate 205 is fixedly connected to the U-shaped round rod 2 2017. The U-shaped round rod 2 2 The outer side of 017 is movably sleeved with a lifting plate 204, the top of the slide plate 2013 is rotatably connected to the movable rod 2020, the top of the movable rod 2020 is rotatably connected to the outer side of the lifting plate 204, the top of the top plate 205 is rotatably connected to the support shaft 2014, the top of the support shaft 2014 is fixedly connected to the screw rod 2015, the middle part of the outer side of the U-shaped round rod 2017 is fixedly sleeved with a sleeve block 2018, the top of the screw rod 2015 is rotatably connected to the sleeve block 2018, the outer side of the screw rod 2015 is threadedly sleeved with a nut 2019, and the lifting plate 204 is fixed to the outer side of the nut 2019;

[0033] First, extend one end of the steel bar 5 into the mechanical sleeve 1, so that the side threaded cylinder 202 is sleeved on the outside of the threaded rod 2010 and rotated until the side threaded cylinder 202 abuts against the inner plate 201, thereby realizing the preliminary connection between the steel bar 5 and the mechanical sleeve 1, and then rotate the external threaded cylinder 207 clockwise on the outside of the steel bar 5, so that the external threaded cylinder 207 enters the mechanical sleeve 1 under the cooperation of the external thread 209 and the internal thread 6, until the rubber pad 203 fits with the end of the mechanical sleeve 1, thereby realizing the reconnection of the steel bar 5 and the mechanical sleeve 1, and then rotate the limiting cylinder 206 to the appropriate position, and then rotate the support shaft 2014 to drive the screw rod 2015 to rotate, and drive the lifting plate 204 to slide upward along the U-shaped round rod 2017 through the nut 2019, and drive the slide plate 2013 to slide along the two U-shaped round rods 1 2016 through the movable rod 2020, and then drive the limiting cylinder 206 to move horizontally through the side shaft 2021, so that the limiting cylinder 206 is sleeved on the outside of the side rod 2011 until it abuts against the outer ring 208, preventing the outer ring 208 from moving, and finally achieving a firm connection between the steel bar 5 and the mechanical sleeve 1 to meet the performance requirements of anti-aircraft impact.

[0034] Example 3, based on Example 1, the limiting mechanism 3 includes an L-shaped round rod 301 fixed to the top of the slide 2013, the end of the L-shaped round rod 301 away from the slide 2013 is fixedly connected to the side plate 304, the outer side of the L-shaped round rod 301 is movably sleeved with a slider 306, and a spring 305 is fixedly connected between the slider 306 and the side plate 304. The spring 305 is sleeved on the outer side of the L-shaped round rod 301, and the side of the slider 306 away from the side plate 304 is fixed. The slider 306 is connected to the insertion rod 307, and the U-shaped handle 303 is fixedly connected to the side plate 304 on the side away from the insertion rod 307. The U-shaped handle 303 passes through the side plate 304 and is movably connected to the side plate 304. The outer side of the limiting cylinder 206 is fixedly sleeved with a collar 302. The collar 302 is provided with a first socket 308 and a second socket 309 on the side close to the slider 306. The inner diameter of the first socket 308 is equal to the inner diameter of the second socket 309. The insertion rod 307 is inserted into the first socket 308.

[0035] When the rubber pad 203 fits with the end of the mechanical sleeve 1, first pull the U-shaped handle 303, driving the slider 306 to slide along the L-shaped round rod 301. At this time, the spring 305 is compressed and drives the insertion rod 307 to move until it is removed from the second socket 309. Then, the limiting cylinder 206 is rotated to the appropriate position, driving the ring 302 to rotate, and then release the U-shaped handle 303. At this time, the spring 305 resets and drives the slider 306 to slide along the L-shaped round rod 301, and drives the insertion rod 307 to move until it is inserted into the first socket 308, thereby limiting the limiting cylinder 206 to prevent it from rotating arbitrarily, and finally facilitating the limiting cylinder 206 to be quickly sleeved on the outside of the side rod 2011.

[0036] Embodiment 4, based on embodiment 1, the clamping mechanism 4 includes a bracket 401 fixed to the outside of the lifting plate 204, and two limiting rods 403 are symmetrically fixedly connected to the bracket 401. The top ends of the two limiting rods 403 extend into the interior of the mechanical sleeve 1 and respectively abut against the bottoms of the two side threaded cylinders 202. The bottoms of the two side threaded cylinders 202 are fixedly connected to limiting rings 402, and the two limiting rods 403 are respectively inserted into the two limiting rings 402;

[0037] When the rotating support shaft 2014 causes the lifting plate 204 to slide upward along the U-shaped round rod 2017, it drives the bracket 401 upward and drives the limiting rod 403 to move upward. When the limiting cylinder 206 is sleeved on the outside of the side rod 2011 and abuts against the outer ring 208, the limiting rod 403 is inserted into the limiting ring 402 and abuts against the side threaded cylinder 202, thereby limiting the opposite side threaded cylinder 202 to prevent it from moving, and finally further ensuring the stability of the connection between the steel bar 5 and the mechanical sleeve 1.

Claims

1. A mechanical connection device for a nuclear power plant containment steel bar that is resistant to aircraft impact, comprising a mechanical sleeve (1), characterized in that: A steel bar (5) is provided on the mechanical sleeve (1), a connecting mechanism (2) is provided between the steel bar (5) and the mechanical sleeve (1), and a limiting mechanism (3) and a clamping mechanism (4) are provided on the connecting mechanism (2); The connecting mechanism (2) includes an inner plate (201) fixed to the inside of the mechanical sleeve (1), a threaded rod (2010) is provided inside the mechanical sleeve (1), the inner plate (201) is fixedly sleeved on the outside of the threaded rod (2010), one end of the steel bar (5) extending to the inside of the mechanical sleeve (1) is fixedly connected to a side threaded tube (202), the side threaded tube (202) is threadedly sleeved on the outside of the threaded rod (2010), and the side threaded tube (202) is in contact with the inner plate (201), the outside of the steel bar (5) is provided with an external threaded tube (207), the outside of the steel bar (5) is provided with an external thread second (2012), and the external thread The threaded barrel (207) is threadedly connected to the outer side of the steel bar (5) through the second external thread (2012), and an outer ring (208) is fixedly installed on the outer side of the external threaded barrel (207). A rubber pad (203) is fixedly connected to the side of the outer ring (208) close to the mechanical sleeve (1), and the rubber pad (203) fits with the end of the mechanical sleeve (1). An internal thread (6) is provided on the inner wall of the mechanical sleeve (1), and an external thread (1) (209) is provided on the outer side of the external threaded barrel (207). The external threaded barrel (207) is threadedly connected to the inside of the mechanical sleeve (1) through the first external thread (209) and the internal thread (6).

2. The aircraft impact-resistant mechanical connection device for a nuclear power plant containment vessel according to claim 1, characterized in that: Two U-shaped round rods (2016) are symmetrically and fixedly connected to the outer side of the mechanical sleeve (1); two slides (213) are symmetrically and movably sleeved between the two U-shaped round rods (216); the outer side of the slide (2013) is rotatably connected to a side shaft (2021); and one end of the side shaft (2021) away from the slide (2013) is fixedly connected to a limiting cylinder (206).

3. The aircraft impact resistant mechanical connection device for a nuclear power plant containment vessel according to claim 1, characterized in that: The outer side of the outer ring (208) is fixedly connected to a side rod (2011), the limiting cylinder (206) is sleeved on the outer side of the side rod (2011), and the limiting cylinder (206) is in contact with the outer ring (208).

4. The aircraft impact resistant mechanical connection device for a nuclear power plant containment vessel according to claim 1, characterized in that: The top of the mechanical sleeve (1) is fixedly connected to a top plate (205), which is fixedly sleeved on the middle part of the outer side of two U-shaped round rods (2016), the top of the top plate (205) is fixedly connected to a U-shaped round rod (2017), the outer side of the U-shaped round rod (2017) is movably sleeved with a lifting plate (204), the top of the slide plate (2013) is rotatably connected to a movable rod (2020), and the top end of the movable rod (2020) is rotatably connected to the outer side of the lifting plate (204).

5. The aircraft impact-resistant mechanical connection device for a nuclear power plant containment vessel according to claim 4, characterized in that: The top of the top plate (205) is rotatably connected to a support shaft (2014), the top end of the support shaft (2014) is fixedly connected to a screw rod (2015), the middle portion of the outer side of the second U-shaped round rod (2017) is fixedly sleeved with a sleeve block (2018), the top end of the screw rod (2015) is rotatably connected to the sleeve block (2018), the outer side of the screw rod (2015) is threadedly sleeved with a nut (2019), and the lifting plate (204) is fixed to the outer side of the nut (2019).

6. The aircraft impact resistant mechanical connection device for a nuclear power plant containment vessel according to claim 1, characterized in that: The limiting mechanism (3) comprises an L-shaped round rod (301) fixed to the top of the slide plate (2013); one end of the L-shaped round rod (301) away from the slide plate (2013) is fixedly connected to a side plate (304); a slider (306) is movably sleeved on the outer side of the L-shaped round rod (301); a spring (305) is fixedly connected between the slider (306) and the side plate (304); the spring (305) is sleeved on the outer side of the L-shaped round rod (301); and a plug rod (307) is fixedly connected to the side of the slider (306) away from the side plate (304).

7. The aircraft impact resistant mechanical connection device for a nuclear power plant containment vessel according to claim 6, characterized in that: A U-shaped handle (303) is fixedly connected to one side of the slider (306) away from the insertion rod (307), and the U-shaped handle (303) passes through the side plate (304) and is movably connected to the side plate (304).

8. The aircraft impact-resistant mechanical connection device for a nuclear power plant containment vessel according to claim 2, characterized in that: The outer side of the limiting cylinder (206) is fixedly sleeved with a collar (302), and a side of the collar (302) close to the slider (306) is provided with a first socket (308) and a second socket (309), the inner diameter of the first socket (308) is equal to the inner diameter of the second socket (309), and the insertion rod (307) is inserted into the first socket (308).

9. The aircraft impact resistant nuclear power plant containment steel bar mechanical connection device according to claim 1, characterized in that: The clamping mechanism (4) comprises a bracket (401) fixed to the outside of the lifting plate (204); two limiting rods (403) are symmetrically fixedly connected to the bracket (401); the top ends of the two limiting rods (403) extend to the inside of the mechanical sleeve (1) and respectively abut against the bottoms of the two side threaded cylinders (202); the bottoms of the two side threaded cylinders (202) are fixedly connected to limiting rings (402); the two limiting rods (403) are respectively inserted into the two limiting rings (402).

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