CN107702903B - Bending resistance extensible type test platform system with auxiliary support - Google Patents
Bending resistance extensible type test platform system with auxiliary support Download PDFInfo
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- CN107702903B CN107702903B CN201710842706.6A CN201710842706A CN107702903B CN 107702903 B CN107702903 B CN 107702903B CN 201710842706 A CN201710842706 A CN 201710842706A CN 107702903 B CN107702903 B CN 107702903B
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Abstract
The invention provides an extensible bending resistance test platform system with an auxiliary support, which comprises a platform base, a height-adjusting bearing frame, a cage-shaped main bearing frame, a lateral bearing column, a loading beam, a hydraulic oil cylinder, a screw rod, a bearing ground rail, a ground bearing point and a ground rail bolt, wherein the height-adjusting bearing frame is arranged on the platform base; the invention fully utilizes the bearing capacity of the bearing ground rail and the ground bearing point, the bearing capacity of the main platform consisting of the platform base and the heightening bearing frame is expanded by designing the cage-shaped main bearing frame and adding the lateral bearing column as the auxiliary support, the end surface and the side surface of the cage-shaped main bearing frame are utilized to decompose and transmit the root bending moment load to the auxiliary support and the main platform, and the load is simultaneously transmitted to the bearing ground rail and the ground bearing point, so that the ground bearing point which is used for intensively loading and bearing the load in a test room at ordinary times also bears the test load, and the bending resistance of the test platform is obviously improved under the condition that the capital construction of fixed bearing parts such as the bearing ground rail, the ground bearing point and the like is not changed.
Description
Technical Field
The invention relates to the technical field of test piece strength tests, in particular to an anti-bending capacity expandable test platform system with an auxiliary support.
Background
The separation test of the booster of the large carrier rocket generally adopts a vertical mode, a rocket core stage needs to be vertically fixed on a test platform, and the booster is bound on the core stage for separation and examination. When a full-load booster is bound on a core stage in a vertical state, the test platform bears a large root bending moment, the number and the bearing capacity of the bearing ground rails of a test room are limited, namely the connecting bearing points with the platform base are limited, so that the bearing ground rails cannot bear the large load. Meanwhile, the huge bending moment load provides higher requirements for the bearing capacity of the butt joint surface of the platform base and the heightening bearing frame, so that the platform base and the heightening bearing frame serving as a universal tool cannot be reused. Because the fixed bearing parts such as the bearing ground rails and the like and the general tools such as the platform base, the height-adjusting bearing frame and the like can not meet the test requirements, the fixed bearing parts and the new general tools need to be reconstructed, so that the design workload and the capital reconstruction difficulty are increased, and the extreme waste of the tools is also caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a bending resistance expandable test platform system with an auxiliary support.
The invention is realized by the following technical scheme:
the utility model provides a but bending resistance expanded type test platform system of tape assisted support, includes platform base, heightens load frame, cage shape main load frame, side direction load post, load beam, hydraulic cylinder, screw rod, load ground rail, ground load point, ground rail bolt, platform base, heighten load frame, cage shape main load frame superpose in proper order the back through the bolt assembly constitution main platform, side direction load post, load beam, hydraulic cylinder, screw rod assembly constitute the assisted support: the lateral bearing columns are assembled on the lateral surfaces of the cage-shaped main bearing frame in a superposed mode, the installation positions and the heights of the lateral bearing columns are determined according to the positions of the cage-shaped main bearing frame, and the vertical surfaces of the lateral bearing columns are attached to the lateral installation surface of the cage-shaped main bearing frame and are in threaded connection through bolts; the loading beam is arranged on the lateral bearing column through a bolt, the hydraulic oil cylinder is screwed on a ground bearing point, the load of the hydraulic oil cylinder is transferred to the lateral bearing column through the screw rod and the loading beam,
preferably, the lateral bearing column is connected with the cage-shaped main bearing frame into a whole, the lateral bearing column is connected with the bottom surface of the platform base into a larger assembly plane, the connection area with the ground is increased, the connection point with the bearing ground rail is increased, and the bending resistance of the root of the structure is improved.
Preferably, a plurality of radial T-shaped grooves are uniformly formed in the upper end face of the platform base, a T-shaped bolt is movably mounted in each T-shaped groove, the T-shaped bolts can move along the T-shaped grooves to form connecting circles with different diameters, the T-shaped grooves are suitable for connecting bearing frames with different diameters, a flange larger than the periphery of the platform base is arranged on the lower end face of the platform base, and the ground rail bolts are connected with the bearing ground rails through holes in the flange to limit and fix the platform base in the circumferential direction.
Preferably, the height-adjusting bearing frame is designed into a plurality of sizes with different heights, so that the mounting height of the test piece can be conveniently adjusted, the structure form is cage-shaped or cylindrical, and the upper end face and the lower end face of the height-adjusting bearing frame are both provided with connecting holes distributed in the circumferential direction and used for being connected with the T-shaped bolt of the platform base.
Preferably, the cage-shaped main bearing frame is a cage-shaped structure welded by an end frame, a pressure rod and a reinforcing piece, the section of the end frame is a U-shaped structure and is formed by welding an upper panel, a lower panel and side panels, the pressure rod is welded with the side panels in an attaching way and is welded with the upper panel after penetrating through the lower panel, the section and the number of the pressure rod can be selected according to the bearing capacity, the reinforcing piece is welded with the pressure rod to enhance the lateral rigidity of the bearing frame, a plurality of connecting holes are circumferentially distributed on the upper end surface and the lower end surface of the end frame, the connecting holes on the upper end surface are connected with the interfaces of a test piece in a matching way, the connecting holes on the lower end surface are connected with the interfaces on the heightening bearing frame in a matching way, a plurality of reinforcing pieces are welded on the upright column on one side of the cage-shaped main bearing frame, a certain number of reinforcing rib plates are axially arranged along the upright column to form a side connecting plane, as a switching tool connected with the side bearing column, connecting holes with equal width and equal spacing are distributed on the side connecting plate.
Preferably, the lateral bearing column is used as an auxiliary bearing component and is formed by assembling an inclined upright column and a base with a flange, the bottom surface of the inclined upright column is connected with a bearing ground rail through a ground rail bolt and a hole on the flange, and the vertical surface of the inclined upright column is distributed with two rows of connecting holes with equal width and equal interval for being assembled and connected with the connecting holes of the side connecting plate of the cage-shaped main bearing frame.
Preferably, a connecting hole is formed in the symmetry line of the edge plate of the loading beam and is used for being connected with a through hole of the lateral bearing column, bearing holes are formed in the two ends of the loading beam and are connected with the hydraulic oil cylinder through screws and nuts; the hydraulic oil cylinder is used as a hydraulic actuating mechanism and is connected with bearing holes at two ends of the loading beam through a screw and a nut, and the lateral bearing column is pressed against the ground by applying axial pressure load; the screw rod is used as a force transmission piece and is used for connecting the hydraulic oil cylinder with the loading beam and transmitting the load of the hydraulic oil cylinder to the loading beam.
Preferably, the force bearing ground rail is used as a fixed bearing part in the test room, is designed according to a certain distance and force bearing capacity, has a T-shaped section and is used for connecting a ground rail bolt; the ground bearing point is used as a test load concentrated bearing point, has enough bearing capacity, and is provided with a connecting threaded hole for connecting hydraulic execution equipment such as a hydraulic oil cylinder and the like.
Preferably, the ground rail bolt is used as a fastener, is of a T-shaped structure, is matched with the T-shaped section of the force bearing ground rail, and is used for connecting the platform base and the force bearing ground rail.
Compared with the prior art, the invention has the following beneficial effects:
(1) the bearing capacity of the bearing ground rail and the bearing point on the ground are fully utilized, the bearing point on the ground for the concentrated force loading of the static test is used as the bending-resistant bearing point at the root part of the platform base, and the bending-resistant bearing capacity of the test platform is improved under the condition of not changing the capital construction;
(2) the main bearing frame is designed, so that the bending moment load is transmitted to the main platform and the auxiliary support, the design difficulty of the whole test platform system is reduced, the utilization rate of the tool is improved, and the input cost of the tool is reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of the present invention.
FIG. 3 is a schematic diagram of a platform base according to an embodiment of the invention.
Fig. 4 is a schematic view of a height-adjusting force-bearing frame in the embodiment of the invention.
Fig. 5 is a schematic diagram of a cage-shaped main bearing frame in the embodiment of the invention.
Fig. 6 is a schematic view of a lateral bearing column in the embodiment of the invention.
Fig. 7 is a schematic view of a load beam in an embodiment of the invention.
FIG. 8 is a schematic illustration of a hydraulic ram in an embodiment of the present invention.
FIG. 9 is a schematic view of a screw in an embodiment of the present invention.
Fig. 10 is a schematic view of a ground rail bolt according to an embodiment of the invention.
In the figure: 1 is a platform base; 2 is a height-adjusting bearing frame; 3 is a cage-shaped main bearing frame; 4 is a test piece; 5 is a lateral bearing column; 6 is a loading beam; 7 is a hydraulic oil cylinder; 8 is a screw rod; 9 is a bearing ground rail; 10 is a ground bearing point; 11 are ground rail bolts.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-10, an embodiment of the present invention provides an extensible bending resistance test platform system with an auxiliary support, including a platform base 1, a height-adjusting bearing frame 2, a cage-shaped main bearing frame 3, a lateral bearing column 5, a loading beam 6, a hydraulic cylinder 7, a screw 8, a bearing ground rail 9, a ground bearing point 10, and a ground rail bolt 11, wherein the platform base, the height-adjusting bearing frame, and the cage-shaped main bearing frame are sequentially stacked and assembled by bolts to form a main platform, and the lateral bearing column, the loading beam, the hydraulic cylinder, and the screw are assembled to form an auxiliary support: the lateral bearing columns are assembled on the lateral surfaces of the cage-shaped main bearing frame in a superposed mode, the installation positions and the heights of the lateral bearing columns are determined according to the positions of the cage-shaped main bearing frame, and the vertical surfaces of the lateral bearing columns are attached to the lateral installation surface of the cage-shaped main bearing frame and are in threaded connection through bolts; the loading beam is installed on the lateral bearing column through a bolt, the hydraulic oil cylinder is in threaded connection with a ground bearing point, the load of the hydraulic oil cylinder is transmitted to the lateral bearing column through the screw rod and the loading beam, the lateral bearing column is connected with the cage-shaped main bearing frame into a whole, the lateral bearing column is connected with the bottom surface of the platform base into a larger assembly plane, the area of connection with the ground is increased, the connection point with the bearing ground rail is increased, and the bending resistance of the root of the structure is improved. The upper end face of the platform base is uniformly provided with a plurality of radial T-shaped grooves, each T-shaped groove is movably provided with a T-shaped bolt, the T-shaped bolts can move along the T-shaped grooves to form connecting circles with different diameters, the T-shaped grooves are suitable for connecting bearing frames with different diameters, the lower end face of the platform base is provided with a flange which is larger than the periphery of the platform base, and the ground rail bolts are connected with the bearing ground rails through holes in the flange to limit and fix the platform base in the circumferential direction. The height-adjusting bearing frame is designed into a plurality of sizes with different heights, so that the mounting height of the test piece can be conveniently adjusted, the structure form is cage-shaped or cylindrical, and the upper end face and the lower end face of the height-adjusting bearing frame are both provided with connecting holes distributed in the circumferential direction and used for being connected with the T-shaped bolts of the platform base. The cage-shaped main bearing frame 3 is a cage-shaped structure formed by welding an end frame 31, a pressure rod 32 and reinforcing pieces 35, the section of the end frame 31 is a U-shaped structure and is formed by welding an upper panel, a lower panel and side panels, the pressure rod is welded with the side panels in an attaching mode and penetrates through the lower panel to be welded with the upper panel, the section and the number of the pressure rod can be selected according to the bearing capacity, the reinforcing pieces 35 are welded with the pressure rod to enhance the lateral rigidity of the bearing frame, a plurality of connecting holes are circumferentially distributed on the upper end face and the lower end face of the end frame, the connecting holes on the upper end face are connected with interfaces of a test piece in a matching mode, the connecting holes on the lower end face are connected with the interfaces on the heightening bearing frame in a matching mode, a plurality of reinforcing pieces 35 are welded on an upright column 33 on one side of the cage-shaped main bearing frame, reinforcing rib plates are arranged along the axial direction, the side connecting plate 34 of the cage-shaped main bearing frame is screwed on the side connecting plane and serves as a switching tool connected with the side bearing column, and connecting holes with equal width and equal spacing are distributed on the side connecting plate. The lateral bearing column is used as an auxiliary bearing component and is formed by assembling an inclined upright column and a base with a flange, the bottom surface of the inclined upright column is connected with a bearing ground rail through a ground rail bolt and holes in the flange, and two rows of connecting holes with equal width and equal spacing are distributed on the vertical surface of the inclined upright column and are used for being assembled and connected with the connecting holes of the side connecting plate of the cage-shaped main bearing frame. Connecting holes are formed in the symmetry line of the edge plate of the loading beam and are used for being connected with the through holes of the lateral bearing columns, and bearing holes are formed in the two ends of the loading beam and are connected with the hydraulic oil cylinder through screws and nuts; the hydraulic oil cylinder is used as a hydraulic actuating mechanism and is connected with bearing holes at two ends of the loading beam through a screw and a nut, and the lateral bearing column is pressed against the ground by applying axial pressure load; the screw rod is used as a force transmission piece and is used for connecting the hydraulic oil cylinder with the loading beam and transmitting the load of the hydraulic oil cylinder to the loading beam.
The bearing ground rail is used as a fixed bearing part in the test room, is designed according to a certain distance and bearing capacity, has a T-shaped section and is used for connecting a ground rail bolt; the ground bearing point is used as a test load concentrated bearing point, has enough bearing capacity, and is provided with a connecting threaded hole for connecting hydraulic execution equipment such as a hydraulic oil cylinder and the like. The ground rail bolt is used as a fastener, is of a T-shaped structure, is matched with the T-shaped section of the force-bearing ground rail, and is used for connecting the platform base and the force-bearing ground rail. The specification of the hydraulic oil cylinder, the bearing capacity of the loading beam and the screw can be determined according to test requirements, and the requirements of different bearing conditions can be met; the upper end face and the lower end face of the cage-shaped main bearing frame are used as main bearing connection faces, the side faces are used as auxiliary bearing connection faces, the cage-shaped main bearing frame is required to meet the bending resistance requirement of the test, and all the connection faces are required to meet the bearing requirement.
The specific implementation completes the assembly through the following steps:
firstly, assembling a platform base 1, a height-adjusting bearing frame 2 and a cage-shaped main bearing frame 3 to form a main platform; a ground rail bolt 11 penetrates through a hole on a flange at the lower end of the platform base 1 and is connected with a force-bearing ground rail 9, so that the platform base 1 is circumferentially limited and fixed on the ground; radial T-shaped grooves are uniformly distributed on the upper end surface of the platform base 1, and a T-shaped bolt is arranged in each radial T-shaped groove and is connected with connecting holes which are circumferentially distributed on the lower end surface of the height-adjusting bearing frame 2; the height-adjusting bearing frame 2 is connected in two pairs to form the installation height required by the test through connecting holes on the upper end surface and the lower end surface; the upper end face of the cage-shaped main bearing frame 3 is in bolt connection with the end face of the test piece 4 through a circumferential through hole, and the lower end face is in bolt connection with the upper end face of the height-adjusting bearing frame 2 through a circumferential through hole; then assembling the lateral bearing column, the loading beam, the hydraulic oil cylinder and the screw to form an auxiliary support; the lateral bearing column 5 is used as an auxiliary supporting member and is arranged on the side surface of the main platform; a hole on the flange at the lower end of the lateral bearing column 5 is penetrated with a ground rail bolt 11 to be connected with a bearing ground rail 9, and a vertical face connecting hole of the lateral bearing column 5 is assembled and connected with a connecting hole of a side connecting plate of the cage-shaped main bearing frame 3; assembling and connecting the flange plate connecting hole of the loading beam 6 with the through hole on the upper end surface of the lateral bearing column 5; the bearing holes at the two ends of the loading beam 6 are internally connected with a screw 8 and a nut; the hydraulic oil cylinder 7 is in threaded connection with the ground force bearing point 10, the upper end of the hydraulic oil cylinder 7 is connected with the screw 8 through a pin, and the hydraulic oil cylinder is operated to apply pressing force to the auxiliary support.
The bearing capacity of a bearing ground rail and a ground bearing point is fully utilized, the designed platform system comprises a main platform and an auxiliary support, the auxiliary support is added to share the bending moment load borne by the main platform, so that the bending resistance bearing capacity of the platform system is further improved, the test capacity range of the platform system is further widened, and the platform system is widely applied to a separation test of a booster of a large carrier rocket.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. The utility model provides a but bending resistance expanded type test platform system of tape assisted support, its characterized in that, includes platform base, heightens bearing frame, cage shape main bearing frame, side direction bearing post, load beam, hydraulic cylinder, screw rod, bearing ground rail, ground bearing point, ground rail bolt, platform base, heighten bearing frame, cage shape main bearing frame superpose in proper order the back through the bolt assembly constitution main platform, side direction bearing post, load beam, hydraulic cylinder, screw rod assembly constitute the assisted support: the lateral bearing columns are superposed and assembled at the side surface positions of the cage-shaped main bearing frames, the mounting positions and the heights of the lateral bearing columns are determined according to the positions of the cage-shaped main bearing frames, and the vertical surfaces of the lateral bearing columns are attached to the side mounting surfaces of the cage-shaped main bearing frames and are in threaded connection through bolts; the loading beam is installed on the lateral bearing column through a bolt, the hydraulic oil cylinder is in threaded connection with a ground bearing point, and the load of the hydraulic oil cylinder is transmitted to the lateral bearing column through the screw and the loading beam.
2. The bending resistance expandable test platform system with auxiliary support as claimed in claim 1, wherein the lateral bearing columns are connected with the cage-shaped main bearing frame into a whole, the lateral bearing columns are connected with the bottom surface of the platform base into a larger assembly plane, the connection area with the ground and the connection point with the bearing ground rail are increased, and the bending resistance of the root of the structure is improved.
3. The bending resistance expandable test platform system with auxiliary support as claimed in claim 1, wherein the platform base has a plurality of radial T-shaped grooves uniformly distributed on its upper end surface, each T-shaped groove has a T-shaped bolt movably mounted therein, the T-shaped bolt can move along the T-shaped groove to form a circle of connection with different diameters, which is suitable for connection with height-adjustable bearing frames with different diameters, the platform base has a flange on its lower end surface larger than the outer periphery of the platform base, and the ground rail bolt is connected with the bearing ground rail through a hole on the flange to fix the platform base in a circumferential position-limited manner.
4. The bending resistance expandable test platform system with auxiliary support as claimed in claim 1, wherein the height-adjusting bearing frame is designed into a plurality of sizes with different heights so as to adjust the installation height of the test piece, the structure is in a cage or cylinder shape, and the connecting holes distributed on the lower end surface of the height-adjusting bearing frame are used for connecting with T-shaped bolts of the platform base; and the upper end surface and the lower end surface of the height-adjusting bearing frame are both provided with connecting holes distributed circumferentially.
5. The bending resistance expandable test platform system with auxiliary support as claimed in claim 1, wherein the main bearing frame is a cage structure welded by an end frame, a press rod and a reinforcement, the cross section of the end frame is a U-shaped structure and is welded by an upper panel, a lower panel and a side plate, the press rod is welded with the side plate and is welded with the upper panel after penetrating through the lower panel, the reinforcement is welded with the press rod, a plurality of connecting holes are circumferentially distributed on the upper end surface and the lower end surface of the end frame, the connecting holes on the upper end surface are connected with the interfaces of the test piece in a matching manner, the connecting holes on the lower end surface are connected with the interfaces on the upper end surface of the heightening bearing frame in a matching manner, a plurality of reinforcements are welded on the upright column on one side of the main bearing frame, a certain number of reinforcements are arranged along the axial direction of the upright column to form a side connecting plane, the side connecting plate of the main bearing frame is, as a switching tool connected with the side bearing column, connecting holes with equal width and equal spacing are distributed on the side connecting plate.
6. The bending resistance expandable test platform system with auxiliary support as claimed in claim 5, wherein the lateral force bearing columns are used as auxiliary force bearing members and are assembled by inclined vertical columns and bases with flanges, the bottom surfaces of the inclined vertical columns are connected with force bearing ground rails through ground rail bolts and holes on the flanges, and two rows of connecting holes with equal width and equal spacing are distributed on the vertical surfaces of the inclined vertical columns and are used for being assembled and connected with the connecting holes of the side connecting plates of the cage-shaped main force bearing frame.
7. The bending resistance expandable test platform system with the auxiliary support as claimed in claim 1, wherein a connecting hole is formed on a symmetry line of a flange plate of the loading beam and is used for connecting with a through hole of the lateral bearing column, bearing holes are designed at two ends of the loading beam and are connected with the hydraulic oil cylinder through a screw and a nut; the hydraulic oil cylinder is used as a hydraulic actuating mechanism and is connected with bearing holes at two ends of the loading beam through a screw and a nut, and the lateral bearing column is pressed against the ground by applying axial pressure load; the screw rod is used as a force transmission piece and is used for connecting the hydraulic oil cylinder with the loading beam and transmitting the load of the hydraulic oil cylinder to the loading beam.
8. The bending-resistance expandable test platform system with the auxiliary support as claimed in claim 1, wherein the force-bearing ground rail is used as a fixed bearing part in the test room, is designed according to certain spacing and force-bearing capacity, is of a T-shaped cross section and is used for connecting a ground rail bolt; the ground bearing point is used as a concentrated bearing point of the test load, has enough bearing capacity, and is provided with a connecting threaded hole for connecting hydraulic execution equipment; the hydraulic execution equipment comprises a hydraulic oil cylinder.
9. The bending-resistance-expandable test platform system with auxiliary support according to claim 1, wherein the ground rail bolt is a T-shaped structure serving as a fastener and matched with the T-shaped section of the force-bearing ground rail for connecting the platform base and the force-bearing ground rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710842706.6A CN107702903B (en) | 2017-09-18 | 2017-09-18 | Bending resistance extensible type test platform system with auxiliary support |
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| CN201710842706.6A CN107702903B (en) | 2017-09-18 | 2017-09-18 | Bending resistance extensible type test platform system with auxiliary support |
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| CN107702903A CN107702903A (en) | 2018-02-16 |
| CN107702903B true CN107702903B (en) | 2020-05-15 |
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| CN114427963B (en) * | 2021-12-31 | 2022-11-01 | 北京空间机电研究所 | High-size large-load adjustable bearing platform for static test and test method |
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| CN104457448A (en) * | 2014-10-21 | 2015-03-25 | 上海航天精密机械研究所 | Combined platform for rocket body structural static strength tests |
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN105223003A (en) * | 2014-06-13 | 2016-01-06 | 北京强度环境研究所 | Bundle some top load inclined push type chargers more |
| CN105277342A (en) * | 2014-06-13 | 2016-01-27 | 北京强度环境研究所 | High-magnitude axial compression and binding joint load realization device |
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| US4771998A (en) * | 1986-03-06 | 1988-09-20 | Orbital Sciences Corporation Ii | Mobile buildup apparatus for transporting, supporting and protecting space vehicle payloads |
| CN201340360Y (en) * | 2008-12-11 | 2009-11-04 | 天水红山试验机有限公司 | Equal-strength shearing-resistance upright post |
| CN105203341A (en) * | 2014-06-13 | 2015-12-30 | 北京强度环境研究所 | Large tank hanging static testing device |
| CN105223003A (en) * | 2014-06-13 | 2016-01-06 | 北京强度环境研究所 | Bundle some top load inclined push type chargers more |
| CN105277342A (en) * | 2014-06-13 | 2016-01-27 | 北京强度环境研究所 | High-magnitude axial compression and binding joint load realization device |
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