CN213330171U - Protection shed roof structure of crashproof - Google Patents
Protection shed roof structure of crashproof Download PDFInfo
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- CN213330171U CN213330171U CN202020859821.1U CN202020859821U CN213330171U CN 213330171 U CN213330171 U CN 213330171U CN 202020859821 U CN202020859821 U CN 202020859821U CN 213330171 U CN213330171 U CN 213330171U
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Abstract
The utility model relates to a protection shed roof structure of crashproof includes baffle and power unloading device, and the power unloading device sets up between baffle and protection shed roof, and when the baffle received the striking, the destructive power that produces when falling the object through the power unloading device was offset, can slow down the destruction of high altitude falling body to the temporary architecture ceiling under baffle and the combined action of power unloading device to the life of extension ceiling. Two layers are arranged through the baffle, and a first force unloading device support is arranged at the top end of a support circular tube below the main keels on the two sides; a hinged support is formed below the middle main keel by a support straight rod; the lower layer four sides fossil fragments with support the pipe welding, the fixed second in channel-section steel fossil fragments both ends level unloads the strength ware to connect in the support straight-bar of upper main joist, can make holistic structure simpler, the design is more reasonable.
Description
Technical Field
The utility model relates to an engineering safety control facility technical field, in particular to protection shed roof structure of crashproof.
Background
It is known that construction site operations are a high risk production activity, where mixers are produced under shelters. Many dangerous sources in the construction site, the object falls to strike belongs to one of the major dangerous sources of site operation, also is the very easy production incident that takes place in the job site, and this dangerous source exists constantly, and the injury to site operation and managers is always fatal, serious economic also can cause the loss of project.
At present, the steel structure protection canopy is adopted more to the job site, and the structure is light and handy, and the whole rigidity of structure is good, however, the protection canopy is just interim facility, and the gravity bearing capacity of whole protection canopy is more limited, and owing to have when falling the article striking in the twinkling of an eye broken ring reinforce, the characteristics of short time, often can cause destruction in the twinkling of an eye to the protection canopy of steel structure, leads to having the unable embodiment of steel of good plasticity ability. That is, for objects dropped from high altitude, such as bricks, steel structural parts, etc., the top of the shelter is easily punctured.
SUMMERY OF THE UTILITY MODEL
Therefore, the anti-collision protective shed roof structure is needed to be designed, which has a simpler structure and a more reasonable design, can effectively slow down the damage of high-altitude falling bodies to the temporary building roof and prolong the service life of the roof.
An impact resistant protective shed roof structure comprising: a baffle plate and a force unloading device, wherein the baffle plate is arranged on the force unloading device, the force unloading device is arranged on the top of the protective shed,
the power unloading device comprises a longitudinal power unloading assembly and a transverse power unloading assembly, the longitudinal power unloading assembly comprises a plurality of first power unloading devices, each first power unloading device is used for being arranged on the top of the protective shed and between the baffles, the transverse power unloading assembly comprises a channel steel, a second power unloading device, a supporting straight rod and a movable hinge structure, the channel steel is used for being arranged on the top of the protective shed, a chute is formed in the channel steel, the second power unloading device is arranged on the end portion of the channel steel, one end of the supporting straight rod is movably arranged on the baffles, the other end of the supporting straight rod is fixed with the movable hinge structure, the movable hinge structure slides and is arranged in the chute, and the movable hinge structure is fixed with the second power unloading device.
In one embodiment, the first force unloader and the second force unloader are both compressed air devices.
In one embodiment, the compressed air device comprises a cylindrical steel pipe, a sealing steel plate, a pressing plate, a sealing ring, a steel wire mesh, an upper cover steel plate, a shaft rod, a connecting rod, a rubber plate, a connecting rope and a compression sleeve ring, wherein the edge of the sealing steel plate is hermetically connected with the edge of one end of the cylindrical steel pipe, the pressing plate is arranged in the cylindrical steel pipe, the sealing ring is respectively supported with the inner side wall of the cylindrical steel pipe and the outer side wall of the pressing plate in an interference manner, an air accommodating cavity is arranged among the pressing plate, the cylindrical steel pipe and the sealing steel plate, a first through hole is formed in the pressing plate, the edge of the steel wire mesh is fixed with the edge of the first through hole, the edge of the upper cover steel plate is fixed with the edge of the other end of the cylindrical steel pipe, a second through hole is formed in the upper, the bottom surface of the shaft lever is abutted to the steel wire mesh, the connecting rod is fixed with the shaft lever and the pressing plate respectively, the rubber plate is arranged in the air accommodating cavity, the connecting rope is used for connecting the shaft lever and the rubber plate, the rubber plate is used for abutting against the edge of the first through hole so as to enable the air accommodating cavity to form a closed air cavity, the compression sleeve ring is sleeved on the outer side wall of the shaft lever, and the top surface of the shaft lever is used for being fixed with the baffle or the movable hinge structure.
In one embodiment, the length of the connecting rope ranges from (0.5-1) cm.
In one embodiment, the compression collar is a spring.
In one embodiment, the diameter of the second through hole is equal to the diameter of the shaft.
In one embodiment, the transverse force-unloading assembly includes two second force-unloading devices, two straight supporting rods and two movable hinge structures, two sliding grooves are formed in the channel steel, the two second force-unloading devices are respectively disposed at two ends of the channel steel, one ends of the two straight supporting rods are respectively movably disposed on the baffle, the other ends of the two straight supporting rods are respectively fixed to the two movable hinge structures, and the two movable hinge structures are respectively fixed to the two second force-unloading devices.
In one embodiment, the movable hinge structure includes a mounting rod, a main bearing, two secondary bearings, a first docking socket and a second docking socket, the mounting rod penetrates through an inner ring of the main bearing, the inner ring of the main bearing is fixed to the mounting rod, the main bearing is slidably disposed in the sliding groove, the two secondary bearings are respectively sleeved outside the mounting rod, inner rings of the two secondary bearings are respectively fixed to the mounting rod, the two secondary bearings are respectively located at two sides of the main bearing, the first docking socket is fixed to the mounting rod, the second docking socket is respectively fixed to outer rings of the two secondary bearings, the first docking socket is used for being fixed to the second unloader, and the second docking socket is used for being bolted to the supporting straight rod.
In one embodiment, the centre line of the main bearing coincides with the centre line of the cylindrical steel tube of the second force relief device.
In one embodiment, the force unloading device comprises a plurality of transverse force unloading assemblies, and each transverse force unloading assembly is arranged between the baffle and the protective shed roof.
Compared with the prior art, the utility model discloses following beneficial technological effect has:
firstly, a protection shed roof structure of crashproof is through setting up baffle and power unloading device, the power unloading device set up in the baffle with between the protection shed roof, when the baffle receives the striking, through the destructive power that the power unloading device produced when falling with the object is offset, the baffle with the combined action of power unloading device can slow down the destruction of high altitude whereabouts to the temporary architecture ceiling to the life of extension ceiling.
Secondly, two layers are arranged through the baffle, and the top end of a supporting circular tube below the main keels on two sides is provided with the first force unloading device support; a hinged support is formed below the middle main keel by a support straight rod; the lower layer four sides fossil fragments with support the pipe welding, channel-section steel fossil fragments both ends level is fixed the second unloads the strength ware to connect in the straight support pole of upper main joist, can make holistic structure simpler, the design is more reasonable.
Drawings
Fig. 1 is a schematic structural view of a protection shed roof structure for preventing collision according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a protection shed roof structure for preventing collision according to another embodiment of the present invention.
Fig. 3 is a schematic structural view of a crash-proof protective shed roof structure according to another embodiment of the present invention.
Fig. 4 is a schematic structural view of a compressed air device according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a compressed air device according to another embodiment of the present invention.
Fig. 6 is a schematic structural view of a channel steel according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a living hinge structure according to an embodiment of the present invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to better understand the advantages and features of the present invention, and to define the scope of the present invention more clearly.
Please refer to fig. 1, which is a schematic structural diagram of an anti-collision protection shed roof structure 10 according to an embodiment of the present invention. The utility model provides a protection shed roof structure 10 of crashproof includes baffle 100 and power-off device 200, baffle 100 set up in power-off device 200 is last, power-off device 200 is used for setting up on protection shed roof 20, promptly, power-off device 200 set up in baffle 100 with between the protection shed roof 20, work as when baffle 100 receives the striking, through power-off device 200 offsets the destructive power that produces when falling the object, like this, baffle 100 with power-off device 200's combined action can slow down the destruction of high altitude whereabouts body to the interim building ceiling down to the life of extension ceiling.
Referring to fig. 1, the force unloading device 200 includes a longitudinal force unloading assembly 210 and a transverse force unloading assembly 220, the longitudinal force unloading assembly 210 includes a plurality of first force unloading devices 211, each of the first force unloading devices 211 is respectively configured to be disposed between the protection shed roof 20 and the baffle 100, the transverse force unloading assembly 220 includes a channel steel 221, a second force unloading device 222, a supporting straight rod 223, and a movable hinge structure 224, the channel steel 221 is configured to be disposed on the protection shed roof 20, a sliding slot 2211 is formed in the channel steel 221, and the sliding slot 2211 is used as a displacement track of the movable hinge structure 224 when the second force unloading device 222 is compressed. The second force relief device 222 is disposed at an end of the channel 221, one end of the straight supporting rod 223 is movably disposed on the baffle 100, the other end of the straight supporting rod 223 is fixed to the movable hinge structure 224, the movable hinge structure 224 is slidably disposed in the sliding slot 2211, the movable hinge structure 224 is fixed to the second force relief device 222, it should be noted that, when the baffle 100 is impacted, each first force relief device 211 acts first, i.e., compresses first, to convert kinetic energy into elastic potential energy, and at the same time, the inner pressure plate 230a compresses downward, the rubber plate 290a lifts upward to close the first through hole 231a of the pressure plate 230a, air in the first force relief device 211 is compressed, and kinetic energy is converted into internal energy of compressed air to offset a part of the internal energy. Secondly, the baffle 100 is subjected to an impact force and is transmitted to the straight supporting rod 223, the force is divided into two components, namely a vertical component and a horizontal component under the guidance of the straight supporting rod 223, the horizontal component passes through the movable hinge structure 224, and the kinetic energy is converted into the internal energy of the compressed air through the force unloading action of the second force unloading device 222, and then the other part is counteracted. When the external force applied to the baffle 100 is removed, the baffle is lifted upwards by the spring, and when the external air pressure is higher than the internal air pressure of the device, the rubber plate 290a is separated from the pressure plate 230a, and the external air flows into the device.
It should be further noted that the baffle 100 is provided with two layers according to the specification, the upper layer uses the through pipe 30 as a structural keel, the secondary keel is lapped on the main keel, and the top end of the supporting circular pipe 40 below the main keels at two sides is provided with the first force relief device 211 for supporting; a hinged support is formed below the middle main keel by a support straight rod 223; the lower floor is with siphunculus, channel-section steel 221 as the structure fossil fragments, and the secondary joist is lapped on the main joist, and four sides fossil fragments and support the pipe welding, and channel-section steel 221 fossil fragments both ends level is fixed the second unloads power ware 222 to connect in the support straight-bar 223 of upper main joist. Namely, the whole structure is simpler and the design is more reasonable due to the structural design.
In one embodiment, the first force relief device 211 and the second force relief device 222 are both compressed air devices 200 a. Referring to fig. 4 and 5, the compressed air device 200a includes a cylindrical steel pipe 210a, a sealing steel plate 220a, a pressing plate 230a, a sealing ring 240a, a steel wire mesh 250a, an upper cover steel plate 260a, a shaft 270a, a connecting rod 280a, a rubber plate 290a, a connecting rope 300a and a compression collar 310a, the edge of the sealing steel plate 220a is connected with the edge of one end of the cylindrical steel pipe 210a in a sealing way, the pressing plate 230a is disposed in the cylindrical steel tube 210a, the sealing ring 240a is respectively pressed against the inner sidewall of the cylindrical steel tube 210a and the outer sidewall of the pressing plate 230a in an interference manner, an air accommodating cavity 211a is formed among the pressing plate 230a, the cylindrical steel pipe 210a and the sealing steel plate 220a, the pressing plate 230a is provided with a first through hole 231a, and for example, a hole center of the first through hole 231a coincides with a center of the pressing plate 230 a. The edge of the steel wire mesh 250a is fixed with the edge of the first through hole 231a, the edge of the upper cover steel plate 260a is fixed with the edge of the other end of the cylindrical steel pipe 210a, the upper cover steel plate 260a is provided with a second through hole 261a, the shaft rod 270a is used for penetrating the second through hole 261a, the bottom surface of the shaft rod 270a is abutted against the steel wire mesh 250a, and for example, the diameter of the second through hole 261a is equal to that of the shaft rod 270a, so that the shaft rod 270a can not shake greatly in the second through hole 261a when the shaft rod 270a penetrates. The connecting rod 280a is fixed to the shaft rod 270a and the pressing plate 230a, the rubber plate 290a is disposed in the air accommodating cavity 211a, and the connecting rope 300a is used to connect the shaft rod 270a and the rubber plate 290a, and for example, the length of the connecting rope 300a ranges from (0.5 to 1) cm, the connecting rope 300a is tied at the center of gravity of the rubber plate 290a, and the length of the rope is just long enough to separate the rubber plate 290a from 1cm below the pressing plate 230a, which is not long enough. The rubber plate 290a is used for abutting against the edge of the first through hole 231a, so that the air accommodating cavity 211a forms a closed air cavity, the compression collar 310a is sleeved on the outer side wall of the shaft rod 270a, the top surface of the shaft rod 270a is used for being fixed with the baffle 100 or the movable hinge structure 224, two ends of the compression collar 310a abut against the baffle 100 and the upper cover steel plate 260a respectively, or two ends of the compression collar 310a abut against the movable hinge structure 224 and the upper cover steel plate 260a respectively. As another example, the compression collar 310a is a spring. Under the combined action of the compression collar 310a and the above components, the connection rope 300a tightens the rubber plate 290a, so that the rubber plate 290a is supported against the edge of the first through hole 231a, and the air accommodating cavity 211a forms a closed air cavity.
In one embodiment, the force unloading device 200 includes a plurality of the lateral force unloading assemblies 220, and each of the lateral force unloading assemblies 220 is respectively disposed between the baffle 100 and the protection shed roof 20. For another example, referring to fig. 1, the lateral force unloading assembly 220 includes two second force unloaders 222, two straight support rods 223, and two movable hinge structures 224, wherein the channel 221 is provided with two sliding slots 2211, the two second force unloaders 222 are respectively disposed at two ends of the channel 221, one ends of the two straight support rods 223 are respectively movably disposed on the baffle 100, the other ends of the two straight support rods 223 are respectively fixed to the two movable hinge structures 224, the two movable hinge structures 224 are respectively fixed to the two second force unloaders 222, that is, the two straight support rods 223 are hinged to the two movable hinge structures 224 and the two second force unloaders 222 to form an equilateral triangle structure with a variable included angle, and the equilateral triangle structure is fixed in the sliding slot 2211 of the channel 221, so that an upper acting force can be divided into two vertical and horizontal force components during an impact, the vertical force of the high-altitude falling body on the upright rod of the protective shed can be greatly weakened, and meanwhile, the horizontal acting component force is automatically offset through the self tensile action of the channel steel 221.
In order to understand the specific structure of the movable hinge joint, please refer to fig. 6 and 7, the movable hinge joint 224 includes a mounting rod 2241, a main bearing 2242, two sub bearings 2243, a first docking port 2244 and a second docking port 2245, the mounting rod 2241 penetrates through the inner ring of the main bearing 2242, the inner ring of the main bearing 2242 is fixed to the mounting rod 2241, the main bearing 2242 is slidably disposed in the sliding slot 2211, the two sub bearings 2243 are respectively sleeved outside the mounting rod 2241, the inner rings of the two sub bearings 2243 are respectively fixed to the mounting rod 2241, the two sub bearings 2243 are respectively located at two sides of the main bearing 2242, the first docking port 2244 is fixed to the mounting rod 2241, the second docking port 2245 is respectively fixed to the outer rings of the two sub bearings 2243, the first docking port 2244 is used for fixing to the second power device 222, the second docking sleeve 2245 is used for being connected with the straight supporting rod 223 through bolts. For another example, the center line of the main bearing 2242 coincides with the center line of the cylindrical steel pipe 210a of the second force discharger 222, that is, the center line of the mounting rod 2241 in the main bearing 2242 coincides with the center line of the cylindrical steel pipe 210a, so that the horizontal connection between the mounting rod 2241 and the first docking port 2244 is ensured, and the sealing property between the pressure plate 230a and the inner cylindrical wall of the cylindrical steel pipe 210a is improved. It should be noted that, the main bearing 2242 is as the gyro wheel, and the inner ring welding of installation pole 2241 and main bearing 2242, two the auxiliary bearing 2243 is located respectively the both sides of main bearing 2242, and two the inner ring of auxiliary bearing 2243 with installation pole 2241 welded fastening, two the outer loop of auxiliary bearing 2243 respectively with second butt joint socket 2245 welded fastening, second butt joint socket 2245 pass through the bolt with support the straight-bar 223 and connect, make support the hinge support that the straight-bar 223 both ends formed the activity. The first butt joint sleeve mouth 2244 is fixed with the installation pole 2241 mutually, and the first butt joint sleeve mouth 2244 is used for with the second unloader 222 welded fastening.
Compared with the prior art, the utility model discloses following beneficial technological effect has:
firstly, a baffle 100 and a force unloading device 200 are arranged on the anti-collision protective shed roof structure, the force unloading device 200 is arranged between the baffle 100 and the protective shed roof 20, when the baffle 100 is collided, the destructive force generated when an object falls is offset by the force unloading device 200, and the damage of a high-altitude falling body to a temporary building ceiling can be reduced under the combined action of the baffle 100 and the force unloading device 200, so that the service life of the ceiling is prolonged.
Secondly, two layers are arranged through the baffle 100, and the top ends of the supporting circular pipes below the main keels on the two sides are provided with the first force relieving devices 211 for supporting; a hinged support is formed below the middle main keel by a support straight rod 223; the lower layer four sides fossil fragments with support the pipe welding, channel-section steel 221 fossil fragments both ends level is fixed the second unloads power ware 222 to connect in the straight-bar support 223 of upper layer main joist, can make holistic structure simpler, the design is more reasonable.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a protection shed roof structure of crashproof which characterized in that includes: a baffle plate and a force unloading device, wherein the baffle plate is arranged on the force unloading device, the force unloading device is arranged on the top of the protective shed,
the power unloading device comprises a longitudinal power unloading assembly and a transverse power unloading assembly, the longitudinal power unloading assembly comprises a plurality of first power unloading devices, each first power unloading device is used for being arranged on the top of the protective shed and between the baffles, the transverse power unloading assembly comprises a channel steel, a second power unloading device, a supporting straight rod and a movable hinge structure, the channel steel is used for being arranged on the top of the protective shed, a chute is formed in the channel steel, the second power unloading device is arranged on the end portion of the channel steel, one end of the supporting straight rod is movably arranged on the baffles, the other end of the supporting straight rod is fixed with the movable hinge structure, the movable hinge structure slides and is arranged in the chute, and the movable hinge structure is fixed with the second power unloading device.
2. The crash-proof shelter roof structure as claimed in claim 1, wherein said first force unloader and said second force unloader are compressed air devices.
3. The anti-collision protective shed roof structure as claimed in claim 2, wherein the compressed air device comprises a cylindrical steel pipe, a sealing steel plate, a pressing plate, a sealing ring, a steel wire mesh, an upper cover steel plate, a shaft lever, a connecting rod, a rubber plate, a connecting rope and a compression lantern ring, the edge of the sealing steel plate is connected with the edge of one end of the cylindrical steel pipe in a sealing manner, the pressing plate is arranged in the cylindrical steel pipe, the sealing ring is respectively supported with the inner side wall of the cylindrical steel pipe and the outer side wall of the pressing plate in an interference manner, an air accommodating cavity is arranged among the pressing plate, the cylindrical steel pipe and the sealing steel plate, the pressing plate is provided with a first through hole, the edge of the steel wire mesh is fixed with the edge of the first through hole, the edge of the upper cover steel plate is fixed with the edge of the other end of the cylindrical steel pipe, and, the axostylus axostyle is used for wearing to establish the second through-hole, the bottom surface of axostylus axostyle with the wire net supports, the connecting rod respectively with the axostylus axostyle reaches the clamp plate is fixed, the rubber slab set up in the air holding intracavity, the connecting rope is used for connecting the axostylus axostyle reaches the rubber slab, the rubber slab be used for with the edge looks top of first through-hole is held, so that the air holding chamber forms inclosed air cavity, the compression lantern ring cover is arranged in on the axostylus axostyle lateral wall, the top surface of axostylus axostyle be used for.
4. An impact protection shed roof structure as defined in claim 3 wherein the length of the connecting rope is in the range of (0.5-1) cm.
5. An impact resistant protective shed roof structure as in claim 3 wherein the compression collar is a spring.
6. An impact protection shed roof structure as defined in claim 3 wherein the diameter of said second through hole is equal to the diameter of said shaft.
7. The structure as claimed in claim 1, wherein the lateral force-releasing assembly comprises two second force-releasing devices, two straight supporting rods and two movable hinge structures, two sliding slots are formed on the channel, two second force-releasing devices are respectively disposed at two ends of the channel, one ends of the two straight supporting rods are respectively movably disposed on the baffle, the other ends of the two straight supporting rods are respectively fixed to the two movable hinge structures, and the two movable hinge structures are respectively fixed to the two second force-releasing devices.
8. An impact-proof shelter roof structure as claimed in claim 3, the movable hinge structure comprises a mounting rod, a main bearing, two auxiliary bearings, a first butt joint sleeve opening and a second butt joint sleeve opening, the mounting rod penetrates through the inner ring of the main bearing, the inner ring of the main bearing is fixed with the mounting rod, the main bearing is arranged in the sliding groove in a sliding manner, the two auxiliary bearings are respectively sleeved outside the mounting rod, inner rings of the two auxiliary bearings are respectively fixed with the mounting rod, the two auxiliary bearings are respectively positioned at two sides of the main bearing, the first butt joint sleeve opening is fixed with the mounting rod, the second butt joint sleeve opening is respectively fixed with the outer rings of the two auxiliary bearings, the first butt joint sleeve opening is used for being fixed with the second force unloading device, and the second butt joint sleeve opening is used for being connected with the supporting straight rod through a bolt.
9. An impact protection shed roof structure as claimed in claim 8 wherein the centre line of the main bearing coincides with the centre line of the cylindrical steel tube of the second force relief device.
10. The crash-proof protective shed roof structure of claim 1, wherein the force-removing device comprises a plurality of the lateral force-removing assemblies, each of the lateral force-removing assemblies being disposed between the fender and the protective shed roof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859821.1U CN213330171U (en) | 2020-05-20 | 2020-05-20 | Protection shed roof structure of crashproof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859821.1U CN213330171U (en) | 2020-05-20 | 2020-05-20 | Protection shed roof structure of crashproof |
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| CN213330171U true CN213330171U (en) | 2021-06-01 |
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| CN202020859821.1U Active CN213330171U (en) | 2020-05-20 | 2020-05-20 | Protection shed roof structure of crashproof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486526A (en) * | 2022-01-26 | 2022-05-13 | 唐山市市场监管综合执法局 | Measuring instrument for detecting pressure-bearing limit value of steel pipe and using method thereof |
-
2020
- 2020-05-20 CN CN202020859821.1U patent/CN213330171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486526A (en) * | 2022-01-26 | 2022-05-13 | 唐山市市场监管综合执法局 | Measuring instrument for detecting pressure-bearing limit value of steel pipe and using method thereof |
| CN114486526B (en) * | 2022-01-26 | 2023-08-25 | 唐山市市场监管综合执法局 | Measuring instrument for detecting bearing limit value of steel pipe and using method thereof |
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