A device for detecting the anti-leakage performance of assembled prefabricated parts

Abstract

The present invention relates to the technical field of prefabricated component performance testing, and specifically proposes an anti-leakage performance testing device for assembled prefabricated components, including a fixing platform, a positioning and pressing group, a closed airtightness testing mechanism, and a sealing locking mechanism. The present invention cooperates with the closed airtightness testing mechanism, the sealing locking mechanism, and the positioning and pressing group to make the upper and lower alignment of the prefabricated floor slab and the sealing cover more convenient and accurate. At the same time, the end surface of the sealing cover in contact with the prefabricated staircase is installed with an expansion frame that expands the sealing pressure surface between the lower end of the sealing cover and the prefabricated staircase, and the sealing cover and the expansion frame are locked and limited in multiple directions by the sealing locking mechanism, so as to avoid the problem that when the air pressure detection group inflates the sealing cover, the sealing cover moves or leaks due to the increase of air pressure inside, which affects the detection accuracy, and greatly improves the accuracy of the anti-leakage performance detection of the prefabricated staircase.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated component performance detection, and specifically proposes a device for detecting the anti-leakage performance of assembled prefabricated components. Background Art

[0002] Leakage and air tightness testing of precast concrete staircase components is a key step to ensure their quality and performance. The good air tightness of precast concrete staircase components can not only prevent moisture, harmful gases (such as radon) and other pollutants in the air from entering the building, thereby protecting the health of the occupants, but also reduce the exchange of cold and hot air and improve the energy efficiency of the building.

[0003] Although air tightness and anti-leakage performance are two different concepts, there is a certain correlation between them, because the permeation paths of gases and liquids are often similar. If the prefabricated parts have good air tightness, it usually means that they have good anti-leakage performance. Therefore, it is also possible to determine whether the concrete stair prefabricated parts have leakage problems by testing the air tightness of the concrete stair prefabricated parts. If leakage occurs, moisture will gradually penetrate into the structure, causing problems such as steel corrosion and concrete cracking. In the long run, this will affect the overall structural strength and stability of the stairs, and may even cause safety hazards. Anti-leakage detection before prefabricated parts leave the factory can detect problems early and repair them, avoiding leakage problems that are discovered after on-site installation, resulting in rework and delays in construction.

[0004] However, when the prefabricated stairs are tested for leakage and air tightness, the seals covering the steps of the prefabricated stairs are prone to move under the action of air pressure during inflation, which may cause leakage between the prefabricated stairs and the seals, affecting the accuracy of the test; and, when the prefabricated stairs are placed, in order to improve the comprehensiveness and accuracy of the test, it is necessary to seal all surfaces of the prefabricated stairs except the edges, so it is necessary to constantly adjust the relative position of the prefabricated stairs and the seals to ensure the accuracy of the alignment, thereby reducing the efficiency of the prefabricated staircase test. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a device for detecting the anti-leakage performance of assembled prefabricated parts to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: an anti-leakage performance detection device for assembled prefabricated parts, comprising a fixed platform, two support platforms with different heights and arranged along its width direction are installed on the top of the fixed platform, an inclined support plate is installed between the two support platforms, a supporting group is installed between the lower end surface of the support plate and the fixed platform, and the prefabricated stairs are placed on the top of the two support platforms and the support plate.

[0007] In a possible implementation, the supporting group includes a plurality of vertical plates installed between the fixing table and the supporting plate and evenly arranged along the width direction of the fixing table, and the heights of the plurality of vertical plates decrease successively along the inclination direction of the supporting plate.

[0008] The support plate and the top of the two support platforms are jointly installed with a positioning and pressing group for fixing the prefabricated stairs. The two support platforms are slidably connected with support frames symmetrically arranged along their length directions through a sliding drive group, and a closed airtightness detection mechanism is installed between the two support frames.

[0009] The sliding drive group drives the support frame to drive the closed airtight detection mechanism to move to the support plate, and at the same time drives the positioning and pressing group to fix the prefabricated stairs. A sealing locking mechanism is installed on the support plate.

[0010] The closed airtight detection mechanism includes an inclined sealing cover and a top plate connected between two support frames through a lifting drive group. The sealing cover is located below the top plate and is connected to the top plate through a connecting component. The sealing cover is in a stepped shape with a lower end face matching the top of the prefabricated stairs. The lower end face frame of the sealing cover is also equipped with an expansion frame with the same structure as its lower end face. The expansion frame and the lower end face of the sealing cover are jointly equipped with a sealing gasket, and an inflation air pressure detection group is installed on the sealing cover.

[0011] In a possible implementation, a pipe rack that slides up and down is installed on the inner wall of the sealing cover, and an air blowing pipe connected to and evenly arranged is installed at the lower end of the pipe rack. The air blowing pipe is inclined, and a plug is installed on the pipe rack.

[0012] In one possible implementation, the lifting drive group includes an X-shaped frame installed across the middle of the top plate and the top thereof, and a hydraulic drive source 1 is installed on each of the two support frames, and the telescopic ends of the two hydraulic drive sources 1 are respectively connected to the two horizontal sections on the lower side of the X-shaped frame, and the side walls at both ends of the sealing cover arranged along its length direction are installed with guide bars arranged symmetrically along its width direction, and the guide bars are connected to the corresponding support frames for up and down sliding.

[0013] In one possible implementation, the connection assembly includes pressure rods installed between the top plate and the sealing cover, which are symmetrical along the width direction of the top plate and evenly arranged along the length direction of the top plate, and the lengths of the plurality of pressure rods increase sequentially along the inclination direction of the sealing cover.

[0014] The sealing locking mechanism includes locking strips symmetrically arranged along the width direction of the support plate, the locking strips are stepped, and the opposite surfaces of the locking strips and the expansion frame are respectively provided with wedge surfaces, and the two wedge surfaces cooperate with each other. A fixing driving group for driving the two locking strips is installed on the support plate, and a supplementary pressure group is jointly installed on the two locking strips.

[0015] In one possible implementation, the fixed drive group includes connecting plates installed on the back sides of two locking strips and corresponding to the horizontal sections of the steps. A mounting groove is opened in the middle of the support plate, and a guide rod is installed on the connecting plate to slide into the mounting groove. Multiple guide rods on the same locking strip pass through the mounting groove and are jointly installed with an end plate. A hydraulic drive source 2 for driving the two end plates is installed in the mounting groove.

[0016] In one possible implementation, the positioning and pressing group includes a positioning plate installed on the top of the support table and an inclined push bar rotatably connected by a rotating shaft, the positioning plate and the push bar are respectively located on both sides of the support plate arranged in the width direction, and the push bar is close to one of the sides arranged in the length direction of the support table, the rotating shaft is connected to a position close to the support plate in the length direction of the push bar, and two arc-shaped push blocks are installed on the support frame close to the side of the push bar, the two arc-shaped push blocks correspond to the two push bars respectively, and when the support frame moves toward the push bar, the arc-shaped push blocks push the push bar away from the side of the rotating shaft.

[0017] In one possible implementation, the supplementary pressure group includes two locking strips arranged along the length direction and pressure rods installed on both opposite ends thereof, the expansion frame is provided with inclined grooves corresponding to the pressure rods one by one, and the lower end surface of the pressure rod is provided with a pressure inclined surface matching the inclined grooves.

[0018] In a possible implementation, an inverted L-shaped rod is installed at the top of the horizontal section of each step of the locking strip, the inverted L-shaped rod corresponds to the pressure rod one by one, and the pressure rod is provided with a socket that is plugged into and cooperates with the inverted L-shaped rod.

[0019] In one possible implementation, the sliding drive group includes two cylinders, and the tops of the two support platforms are each provided with a storage groove that is slidably connected to the support frame. The cylinder is installed on the side wall of the storage groove close to the push bar, and a through groove is provided on the support frame close to the push bar. After the cylinder passes through the through hole, the telescopic end of the cylinder is connected to the other support frame.

[0020] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. An assembled prefabricated component anti-leakage performance detection device designed by the present invention, through the cooperation of a closed airtight detection mechanism, a sealing locking mechanism and a positioning and pressing group, makes the upper and lower alignment of the prefabricated floor and the sealing cover more convenient and accurate. At the same time, the end surface of the sealing cover in contact with the prefabricated staircase is installed with an expansion frame that expands the sealing pressure surface between the lower end of the sealing cover and the prefabricated staircase, and the sealing cover and the expansion frame are locked and limited in multiple directions through the sealing locking mechanism, thereby avoiding the problem that when the air pressure detection group inflates the sealing cover, the sealing cover moves or leaks due to the increase in air pressure, which affects the detection accuracy, thereby greatly improving the accuracy of the anti-leakage performance detection of the prefabricated stairs.

[0021] 2. In order to facilitate the placement of prefabricated stairs, the present invention drives two support frames through a sliding drive group to drive the closed airtightness detection mechanism to move to the top of the prefabricated stairs after the prefabricated stairs are placed. When the support frames move, the support frames also drive the positioning and pressing groups to center and press the prefabricated stairs in the width direction, which not only avoids the problem of movement of the prefabricated stairs during the detection process, but also improves the alignment accuracy of the prefabricated stairs and the sealing cover, thereby improving the efficiency of the prefabricated staircase detection, achieving a dual-purpose effect.

[0022] 3. The support plate for supporting the prefabricated stairs of the present invention is equipped with a plurality of vertical plates at the bottom, and the heights of the plurality of vertical plates are successively reduced along the inclination direction of the support plate, so that each vertical plate, the fixed platform and the support plate form a triangular stable structure, which greatly improves the supporting force and supporting stability of the support plate when supporting the prefabricated stairs, and avoids the problem of damage to the prefabricated stairs during inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the prefabricated staircase of the present invention when it is placed.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the prefabricated staircase of the present invention when it is fixed.

[0026] Figure 3 It is a partial three-dimensional structural schematic diagram of the closed airtightness detection mechanism of the present invention.

[0027] Figure 4 It is a schematic diagram of the partial matching structure of the sealing locking mechanism of the present invention when it is matched and locked with the expansion frame.

[0028] Figure 5 The present invention Figure 2 Main sectional view.

[0029] Figure 6 The present invention Figure 5 Enlarged view of point A in .

[0030] Figure 7 It is a structural schematic diagram of the slip drive group of the present invention.

[0031] Figure 8 It is a schematic cross-sectional view of the structure of the locking strip of the present invention when it cooperates with the expansion frame.

[0032] Fig. 9 It is a schematic cross-sectional view of the structure of the resist rod and the inclined groove when the resist rod and the inclined groove are matched.

[0033] Figure numerals: 1, fixed platform; 2, support platform; 3, support plate; 4, support group; 40, vertical plate; 5, positioning and pressing group; 50, positioning plate; 51, push bar; 52, arc-shaped block; 6, support frame; 7, closed airtight detection mechanism; 70, lifting drive group; 701, cross-shaped frame; 702, guide bar; 71, top plate; 72, connecting assembly; 73, sealing cover; 730, pipeline frame; 731, air blowing pipe; 732, intubation; 74, expansion Filling rack; 75, sealing gasket; 76, inflation air pressure detection group; 760, inflation tube; 761, air pressure detector; 8, sliding drive group; 80, storage slot; 81, cylinder; 9, sealing locking mechanism; 90, locking strip; 901, inverted L-shaped plug rod; 902, plug hole; 91, supplementary pressure group; 910, push rod; 911, inclined groove; 92, fixed drive group; 920, connecting plate; 921, guide rod; 922, end plate; 10, prefabricated stairs. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] See also Figure 1 and Figure 5 A device for detecting the anti-leakage performance of assembled prefabricated parts comprises a fixed platform 1, on the top of which are installed two support platforms 2 with different heights and arranged along the width direction thereof, an inclined support plate 3 is installed between the two support platforms 2, a supporting group 4 is installed between the lower end surface of the support plate 3 and the fixed platform 1, and a prefabricated staircase 10 is placed on the top of the two support platforms 2 and the support plate 3.

[0037] See also Figure 1 and Figure 5 The supporting group 4 includes a plurality of vertical plates 40 installed between the fixed platform 1 and the supporting plate 3 and evenly arranged along the width direction of the fixed platform 1. The heights of the plurality of vertical plates 40 decrease successively along the inclination direction of the supporting plate 3, so that each vertical plate 40 forms a triangular stable structure with the fixed platform 1 and the supporting plate 3, which greatly improves the supporting force and supporting stability of the supporting plate 3 when supporting the prefabricated staircase 10.

[0038] See also Figure 1 and Figure 5 The support plate 3 and the top of the two support platforms 2 are jointly installed with a positioning and pressing group 5 for fixing the prefabricated stairs 10. The two support platforms 2 are slidably connected with support frames 6 symmetrically arranged along their length direction through a sliding drive group 8, and a closed airtightness detection mechanism 7 is installed between the two support frames 6.

[0039] See also Figure 1 and Figure 5 The sliding drive group 8 drives the support frame 6 to drive the closed airtightness detection mechanism 7 to move onto the support plate 3, and at the same time drives the positioning and pressing group 5 to fix the prefabricated stairs 10. A sealing locking mechanism 9 is installed on the support plate 3.

[0040] In the initial state, the closed airtight detection mechanism 7 is located on the side of the support plate 3, so that the prefabricated staircase 10 can be placed on the support plate 3. When the prefabricated staircase 10 is placed, the transition point where the support plate 3 is connected to the two support platforms 2 is tightly pressed against the bending point of the lower end surface of the prefabricated staircase 10, so as to realize the positioning of the prefabricated staircase 10 in the length direction. After the prefabricated staircase 10 is placed, the two support frames 6 are driven by the sliding drive group 8 to drive the closed airtight detection mechanism 7 to move above the prefabricated staircase 10. When the support frame 6 moves, the support frame 6 also drives the positioning and pressing group 5 to center and press the prefabricated staircase 10 in the width direction, which not only avoids the movement of the prefabricated staircase 10 during the detection process, but also improves the alignment accuracy of the prefabricated staircase 10 and the closed airtight detection mechanism 7.

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The closed airtight detection mechanism 7 includes an inclined sealing cover 73 and a top plate 71 connected between two support frames 6 through a lifting drive group 70. The sealing cover 73 is located below the top plate 71 and is connected to the top plate 71 through a connecting component 72. The sealing cover 73 is in a stepped shape with its lower end surface matching the top of the prefabricated staircase 10. The lower end surface frame of the sealing cover 73 is also equipped with an expansion frame 74 with the same structure as its lower end surface. The expansion frame 74 and the lower end surface of the sealing cover 73 are jointly equipped with a sealing gasket 75, and an inflation air pressure detection group 76 is installed on the sealing cover 73.

[0042] The inflation air pressure detection group 76 is composed of an inflation tube 760 installed on the sealing cover 73 and connected thereto, and an air pressure detector 761 .

[0043] The lifting drive group 70 drives the sealing cover 73 to move downward until the sealing cover 73 and the expansion frame 74 drive the sealing gasket 75 to press against the side walls of the horizontal and vertical sections of the prefabricated staircase 10, thereby achieving the seal between the sealing cover 73 and the prefabricated staircase 10. The expansion frame 74 is used to expand the sealing pressure surface between the lower end of the sealing cover 73 and the prefabricated staircase 10, thereby improving the sealing between the sealing cover 73 and the prefabricated staircase 10.

[0044] Then, the sealing cover 73 and the expansion frame 74 are locked and limited in multiple directions through the sealing locking mechanism 9 to prevent the air pressure in the sealing cover 73 from increasing when the inflation air pressure detection group 76 inflates the sealing cover 73, causing the sealing cover 73 to move or leak, thereby affecting the detection accuracy.

[0045] See also Figure 3 , Figure 5 and Figure 6 The inner wall of the sealing cover 73 is installed with a pipe rack 730 that slides up and down, and the lower end of the pipe rack 730 is installed with an air blowing pipe 731 connected to it and evenly arranged, and the air blowing pipe 731 is inclined. A plug pipe 732 is installed on the pipe rack 730, and the plug pipe 732 is connected to the inflation pipe 760 for sliding up and down. When the sealing cover 73 moves to the top of the prefabricated staircase 10, the external air pump first transports the gas to the pipe rack 730 through the inflation pipe 760, and the pipe rack 730 blows air toward the top edge of the prefabricated staircase 10 through the air blowing pipe 731, so as to clean the part of the prefabricated staircase 10 that is about to contact with the lower end of the sealing cover 73, and further improve the sealing effect when the sealing cover 73 is pressed on the top of the prefabricated staircase 10.

[0046] See also Figure 1 and Figure 2 The lifting drive group 70 includes an X-shaped frame 701 installed across the middle of the top plate 71 and the top thereof, and a hydraulic drive source 1 (such as a hydraulic cylinder) is installed on each of the two support frames 6, and the telescopic ends of the two hydraulic drive sources 1 are respectively connected to the two horizontal sections on the lower side of the X-shaped frame 701, and the side walls at both ends of the sealing cover 73 arranged along the length direction are installed with guide bars 702 arranged symmetrically along the width direction, and the guide bars 702 are connected to the corresponding support frames 6 for up and down sliding.

[0047] The four guide strips 702 cooperate with the two support frames 6 to slide up and down, thereby improving the stability and verticality of the sealing cover 73 when it moves up and down, thereby improving the sealing effect when the sealing cover 73 contacts and seals against the top of the prefabricated staircase 10; the two hydraulic drive sources simultaneously drive the "X"-shaped frame 701 to drive the top plate 71 and the sealing cover 73 to move downward until the sealing cover 73 and the expansion frame 74 drive the sealing gasket 75 to contact the side walls of the horizontal and vertical sections of the prefabricated staircase 10, thereby achieving sealing between the sealing cover 73 and the prefabricated staircase 10.

[0048] See also Figure 1 and Figure 3 The connecting assembly 72 includes pressure rods installed between the top plate 71 and the sealing cover 73, which are symmetrical along the width direction of the top plate 71 and evenly arranged along the length direction of the top plate 71. The lengths of the multiple pressure rods increase successively along the inclination direction of the sealing cover 73. The top plate 71 drives the sealing cover 73 to move downward and press against the prefabricated staircase 10 through the pressure rods, thereby improving the uniformity of pressure dispersion when the lower end of the sealing cover 73 presses and seals against the prefabricated staircase 10, thereby improving the sealing between the sealing cover 73 and the prefabricated staircase 10.

[0049] See also Figure 1 , Figure 2 and Figure 4 The sealing locking mechanism 9 includes locking strips 90 symmetrically arranged along the width direction of the support plate 3. The locking strips 90 are stepped. The opposite surfaces of the locking strips 90 and the expansion frame 74 are respectively provided with wedge surfaces, and the two wedge surfaces cooperate with each other. A fixing driving group 92 for driving the two locking strips 90 is installed on the support plate 3, and a supplementary pressing group 91 is commonly installed on the two locking strips 90.

[0050] See also Figure 1 , Figure 2 , Figure 5 and Figure 8 The fixed driving group 92 includes connecting plates 920 installed on the back sides of two locking strips 90 and corresponding to the horizontal sections of the steps. A mounting groove is opened in the middle of the support plate 3. A guide rod 921 is installed on the connecting plate 920 to slide into the mounting groove. The guide rod 921 is used to guide the movement of the locking strip 90. Multiple guide rods 921 on the same locking strip 90 pass through the mounting groove and are jointly installed with an end plate 922. A hydraulic driving source 2 for driving the two end plates 922 is installed in the mounting groove (such as a two-way hydraulic cylinder whose two telescopic ends are respectively connected to the two end plates 922, not shown in the figure).

[0051] After the sealing cover 73 and the expansion frame 74 are pressed against the top step end surface of the prefabricated staircase 10 through the sealing gasket 75, the hydraulic drive source 2 drives the two end plates 922 and the guide rod 921 to pull the two locking strips 90 to move toward the expansion frame 74. When the wedge-shaped surface of the locking strip 90 contacts the wedge-shaped surface of the expansion frame 74, the locking strip 90 continues to move, thereby pressing the expansion frame 74 again through the pressing fit of the wedge-shaped surface (see FIG. Figure 8 ), which not only improves the sealing effect between the sealing cover 73 and the prefabricated staircase 10, but also limits and locks the expansion frame 74 when it moves up and down, thereby preventing the sealing cover 73 from moving due to excessive air pressure inside, thereby affecting the detection accuracy.

[0052] See also Figure 1 and Figure 2The positioning and pressing group 5 includes a positioning plate 50 installed on the top of the support platform 2 and an inclined push bar 51 rotatably connected by a rotating shaft. The positioning plate 50 and the push bar 51 are respectively located on both sides of the support plate 3 arranged in the width direction, and the push bar 51 is close to one side of the support platform 2 arranged in the length direction. The rotating shaft is connected to the position of the push bar 51 close to the support plate 3 in the length direction. Two arc-shaped push blocks 52 are installed on the support frame 6 close to the side of the push bar 51. The two arc-shaped push blocks 52 correspond to the two push bars 51 respectively. When the support frame 6 moves toward the push bar 51, the arc-shaped push blocks 52 push the push bar 51 away from the side of the rotating shaft.

[0053] When the support frame 6 drives the closed airtightness detection mechanism 7 to move above the prefabricated staircase 10 under the driving action of the sliding drive group 8, the support frame 6 drives the arc-shaped resistance block 52 to move toward the resistance push bar 51, and the arc-shaped resistance block 52 pushes the resistance push bar 51 away from the side of the rotation axis, so that the resistance push bar 51 rotates along the rotation axis, and the other end of the resistance push bar 51 contacts the side wall of the prefabricated staircase 10 in the width direction and pushes the prefabricated staircase 10 and the positioning plate 50 to press tightly, thereby realizing the centering positioning and pressing of the prefabricated staircase 10 in the width direction, thereby improving the accuracy of the alignment of the prefabricated staircase 10 and the sealing cover 73.

[0054] See also Figure 1 , Figure 2 and Fig. 9 The supplementary pressing group 91 includes two locking strips 90 arranged along the length direction and the two end opposite surfaces of which are installed with pressing rods 910. The expansion frame 74 is provided with an inclined groove 911 corresponding to the pressing rods 910. The lower end surface of the pressing rod 910 is provided with a pressing inclined surface matching the inclined groove 911. When the locking strip 90 moves toward the expansion frame 74, it drives the pressing rod 910 to move toward the corresponding inclined groove 911. When the pressing inclined surface of the pressing rod 910 contacts the inclined groove 911, the pressing rod 910 presses the top of both sides of the expansion frame 74 in the length direction through the cooperation of the pressing inclined surface and the inclined groove 911 and cooperates with the locking strip 90, thereby realizing the comprehensive secondary pressing function of the expansion frame 74, and further improving the sealing effect between the sealing cover 73 and the prefabricated staircase 10.

[0055] See also Figure 1, an inverted L-shaped plug rod 901 is installed on the top of the horizontal section of each step of the locking strip 90, and the inverted L-shaped plug rod 901 corresponds to the pressure rod one by one, and the pressure rod is provided with a socket 902 which is plugged into and cooperates with the inverted L-shaped plug rod 901. When the locking drive group 92 drives the locking strip 90 to move toward the expansion frame 74, the locking strip 90 drives the inverted L-shaped plug rod 901 to move toward the socket 902, so that the locking strip 90 is locked up and down through the inverted L-shaped plug rod 901 and the socket 902 and the pressure rod, thereby realizing multi-directional locking of the sealing cover 73, avoiding excessive air pressure when inflating the sealing cover 73, causing the sealing cover 73 and the locking strip 90 to move under the action of air pressure and cause leakage, affecting the accuracy of the anti-leakage performance detection of the prefabricated staircase 10.

[0056] See also Figure 1 and Figure 7 The sliding drive group 8 includes two cylinders 81. The tops of the two support platforms 2 are provided with storage grooves 80 that are slidably connected to the support frame 6. The cylinder 81 is installed on the side wall of the storage groove 80 close to the push bar 51. A through groove is provided on the support frame 6 close to the push bar 51. After the cylinder 81 passes through the through hole, the telescopic end of the cylinder 81 is connected to the other support frame 6, so that the cylinder 81 can not only pull the two support frames 6 and the top plate 71 to move, but also avoid the problem of expanding the space occupied by the detection equipment due to the installation of the cylinder 81.

[0057] See also Figure 1-Figure 9 During operation, when the prefabricated staircase 10 is placed, the two bending parts of the lower end surface of the prefabricated staircase 10 are respectively pressed against the transition parts where the support plate 3 and the two support platforms 2 are connected, so as to realize the positioning of the prefabricated staircase 10 in the length direction. After the prefabricated staircase 10 is placed, the two support frames 6 are driven by the sliding drive group 8 to drive the closed airtightness detection mechanism 7 to move above the prefabricated staircase 10. When the support frame 6 moves, the support frame 6 also drives the positioning and pressing group 5 to center the prefabricated staircase 10 in the width direction and press and fix it, which not only avoids the movement of the prefabricated staircase 10 during the detection process, but also improves the alignment accuracy of the prefabricated staircase 10 and the sealing cover 73.

[0058] Then, the lifting drive group 70 drives the sealing cover 73 to move downward until the sealing cover 73 and the expansion frame 74 drive the sealing gasket 75 to press against the side walls of the horizontal and vertical sections of the prefabricated staircase 10, thereby achieving the seal between the sealing cover 73 and the prefabricated staircase 10. The expansion frame 74 is used to expand the sealing pressure surface between the lower end of the sealing cover 73 and the prefabricated staircase 10, thereby improving the sealing between the sealing cover 73 and the prefabricated staircase 10.

[0059] Afterwards, the sealing cover 73 and the expansion frame 74 are locked and limited in multiple directions through the sealing locking mechanism 9 to prevent the air pressure in the sealing cover 73 from increasing when the inflation air pressure detection group 76 inflates the sealing cover 73, causing the sealing cover 73 to move or leak, thereby affecting the detection accuracy.

[0060] Finally, the sealing cover 73 is inflated through the inflation air pressure detection group 76. When the air pressure in the sealing cover 73 stabilizes, the inflation is stopped. After a few days of rest, the air pressure value on the air pressure detector 761 is checked to determine whether the anti-leakage air tightness detection value of the prefabricated staircase 10 is within a reasonable range, that is, whether it meets the standard.

[0061] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-leakage performance detection device for assembled prefabricated parts, characterized in that: It comprises a fixed platform (1), two support platforms (2) of different heights and arranged along the width direction of the fixed platform (1) are installed on the top of the fixed platform (1), an inclined support plate (3) is installed between the two support platforms (2), a supporting group (4) is installed between the lower end surface of the support plate (3) and the fixed platform (1), and a prefabricated staircase (10) is placed on the top of the two support platforms (2) and the support plate (3); A positioning and pressing group (5) for fixing the prefabricated staircase (10) is installed on the support plate (3) and the top of the two support platforms (2); support frames (6) symmetrically arranged along the length direction are slidably connected to the two support platforms (2) through a sliding drive group (8); and a closed airtightness detection mechanism (7) is installed between the two support frames (6); The sliding drive group (8) drives the support frame (6) to drive the closed airtightness detection mechanism (7) to move onto the support plate (3), while at the same time driving the positioning and pressing group (5) to fix the prefabricated staircase (10); a sealing locking mechanism (9) is installed on the support plate (3); The closed airtight detection mechanism (7) comprises an inclined sealing cover (73) and a top plate (71) connected between two support frames (6) via a lifting drive group (70); the sealing cover (73) is located below the top plate (71) and is connected to the top plate (71) via a connecting assembly (72); the sealing cover (73) is in a stepped shape with a lower end surface matching the top of the prefabricated staircase (10); an expansion frame (74) having the same structure as its lower end surface is also installed on the lower end surface frame of the sealing cover (73); a sealing gasket (75) is installed on the lower end surface of the expansion frame (74) and the sealing cover (73); and an inflation air pressure detection group (76) is installed on the sealing cover (73); The sealing locking mechanism (9) comprises locking strips (90) symmetrically arranged along the width direction of the support plate (3), the locking strips (90) are stepped, and the opposing surfaces of the locking strips (90) and the expansion frame (74) are respectively provided with wedge-shaped surfaces, and the two wedge-shaped surfaces cooperate with each other. A fixing driving group (92) for driving the two locking strips (90) is installed on the support plate (3), and a supplementary pressing group (91) is commonly installed on the two locking strips (90).

2. The device for detecting the anti-leakage performance of assembled prefabricated parts according to claim 1, characterized in that: The positioning and pressing group (5) comprises a positioning plate (50) installed on the top of the support platform (2) and an inclined push bar (51) rotatably connected via a rotating shaft, the positioning plate (50) and the push bar (51) are respectively located on both sides of the support plate (3) arranged in the width direction, and the push bar (51) is close to one side of the support platform (2) arranged in the length direction, the rotating shaft is connected to a position of the push bar (51) close to the support plate (3) in the length direction, and two arc-shaped push blocks (52) are installed on the support frame (6) close to one side of the push bar (51), the two arc-shaped push blocks (52) respectively correspond to the two push bars (51), and when the support frame (6) moves towards the push bar (51), the arc-shaped push blocks (52) push the push bar (51) away from the rotating shaft.

3. The device for detecting the anti-leakage performance of prefabricated parts according to claim 1, characterized in that: The lifting drive group (70) comprises an "X"-shaped frame (701) installed across the middle of the top plate (71) and the top thereof; two support frames (6) are each provided with a hydraulic drive source 1; the telescopic ends of the two hydraulic drive sources 1 are respectively connected to two horizontal sections at the lower side of the "X"-shaped frame (701); and the side walls of the sealing cover (73) arranged along the length direction thereof are each provided with guide bars (702) arranged symmetrically along the width direction thereof; the guide bars (702) are connected to the corresponding support frames (6) in an up-and-down sliding manner.

4. The device for detecting the anti-leakage performance of assembled prefabricated parts according to claim 1, characterized in that: The locking drive group (92) comprises connecting plates (920) which are installed on the back sides of two locking strips (90) and correspond to the horizontal sections of the steps one by one. A mounting groove is provided in the middle of the support plate (3). A guide rod (921) which slides into the mounting groove is installed on the connecting plate (920). Multiple guide rods (921) on the same locking strip (90) pass through the mounting groove and are jointly installed with an end plate (922). A hydraulic drive source 2 for driving the two end plates (922) is installed in the mounting groove.

5. The device for detecting the anti-leakage performance of assembled prefabricated parts according to claim 2, characterized in that: The sliding drive group (8) comprises two cylinders (81). The tops of the two support platforms (2) are each provided with a receiving groove (80) slidably connected to the support frame (6). The cylinder (81) is installed on a side wall of the receiving groove (80) close to the push bar (51). A through groove is provided on the support frame (6) close to the push bar (51). After the cylinder (81) passes through the through hole, the telescopic end of the cylinder (81) is connected to the other support frame (6).

6. The device for detecting the anti-leakage performance of prefabricated parts according to claim 1, characterized in that: The supplementary pressing group (91) comprises two locking strips (90) arranged along the length direction and having pressing rods (910) installed at both ends of the opposite surfaces. The expansion frame (74) is provided with inclined grooves (911) corresponding to the pressing rods (910) one by one. The lower end surface of the pressing rod (910) is provided with a pressing inclined surface matching the inclined grooves (911).

7. The device for detecting the anti-leakage performance of assembled prefabricated parts according to claim 1, characterized in that: The supporting group (4) comprises a plurality of vertical plates (40) installed between the fixed platform (1) and the support plate (3) and evenly arranged along the width direction of the fixed platform (1), wherein the heights of the plurality of vertical plates (40) decrease successively along the inclination direction of the support plate (3).

8. The device for detecting the anti-leakage performance of prefabricated parts according to claim 1, characterized in that: The connection assembly (72) comprises pressure rods installed between the top plate (71) and the sealing cover (73), which are symmetrical along the width direction of the top plate (71) and evenly arranged along the length direction of the top plate (71), and the lengths of the plurality of pressure rods increase sequentially along the inclination direction of the sealing cover (73).

9. The device for detecting the anti-leakage performance of assembled prefabricated parts according to claim 8, characterized in that: An inverted L-shaped plug rod (901) is installed at the top of the horizontal section of each step of the locking strip (90), and the inverted L-shaped plug rod (901) corresponds to the pressure rod one by one. The pressure rod is provided with a plug hole (902) that is plugged and matched with the inverted L-shaped plug rod (901).

10. The device for detecting the anti-leakage performance of prefabricated parts according to claim 1, characterized in that: The inner wall of the sealing cover (73) is provided with a pipe rack (730) that slides up and down, and the lower end of the pipe rack (730) is provided with an air blowing pipe (731) connected thereto and evenly arranged, the air blowing pipe (731) is inclined, and an insertion pipe (732) is provided on the pipe rack (730).

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