CN115876453A - Safety belt test dynamic and static strength test system and test method - Google Patents
Safety belt test dynamic and static strength test system and test method Download PDFInfo
- Publication number
- CN115876453A CN115876453A CN202310187717.0A CN202310187717A CN115876453A CN 115876453 A CN115876453 A CN 115876453A CN 202310187717 A CN202310187717 A CN 202310187717A CN 115876453 A CN115876453 A CN 115876453A
- Authority
- CN
- China
- Prior art keywords
- safety belt
- assembly
- belt
- test
- dummy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses a test system and a test method for testing dynamic and static strength of a safety belt, relating to the technical field of test equipment; the safety belt test dynamic and static strength test system comprises a bearing frame body and a dummy lifting device; the bearing frame body comprises a bottom plate and a longitudinal rod body; the dummy lifting device comprises an upper cross beam assembly, a lower cross beam assembly and a lifting ring assembly; the upper beam assembly comprises an upper moving beam and a magnet bracket fixed on the upper moving beam; a first magnet and a second magnet are fixed on the magnet bracket; the lower beam assembly comprises a lower moving beam, a force sensor and a hook; the lifting ring component comprises a sliding ring, a connecting belt and a belt body furling component; a dummy is arranged at the bottom of the safety belt to be tested, and an iron attraction block body is arranged at the head of the dummy; the safety belt testing system has the advantages that the safety belt testing system is convenient to operate and high in testing efficiency, does not need to be matched by multiple persons and does not need to ascend when used for testing the safety belt.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a test system and a test method for testing dynamic and static strength of a safety belt.
Background
The high-altitude operation type safety belt is individual protection equipment for preventing a high-altitude operator from falling and safely suspending the operator after falling; the produced safety belt needs strength test, and then the safety of high-altitude operation personnel is ensured.
The existing safety belt testing equipment respectively tests the static strength and the dynamic strength of a safety belt, but the equipment is complex, the operation of testing personnel is complex, a plurality of people are required for a cooperation test, the testing personnel are required to operate at a high place during the test, and the safety and the efficiency are difficult to guarantee.
Disclosure of Invention
The safety belt testing system solves the technical problems that safety belt testing equipment in the prior art is complex in operation when testing a safety belt, needs multiple persons for a cooperation test, needs testers to operate at a high place during a test, and is poor in testing safety and low in efficiency; the safety belt testing system has the advantages that the safety belt testing system is convenient to operate and high in testing efficiency, does not need cooperation of multiple persons and does not need climbing operation when being used for testing the safety belt.
The embodiment of the application provides a safety belt test dynamic and static strength test system, which comprises a bearing frame body and a dummy lifting device;
the bearing frame body comprises a bottom plate and a longitudinal rod body;
the dummy lifting device comprises an upper cross beam assembly, a lower cross beam assembly and a lifting ring assembly;
the upper cross beam assembly and the lower cross beam assembly are positioned on the longitudinal rod body in a sliding mode;
the upper crossbeam assembly comprises an upper moving beam and a magnet bracket fixed on the upper moving beam; a first magnet and a second magnet are fixed on the magnet bracket, are arranged one above the other and have a distance larger than 10 cm; the distance between the first magnet and one side, close to the magnet bracket, of the upper moving beam is more than 25 cm;
the lower cross beam assembly comprises a lower moving beam, a force sensor and a hook, the force sensor is fixed on the upper moving beam, and the hook is fixed at the bottom of the force sensor;
the lifting ring assembly comprises a sliding ring, a connecting belt and a belt body furling assembly;
the sliding ring is annular and is sleeved on the safety belt to be tested;
the connecting belt is a soft belt body, one end of the connecting belt is fixed on the sliding ring, and the other end of the connecting belt is wound and positioned on the belt body winding component;
the bottom of the safety belt to be tested is provided with a dummy, and the head of the dummy is provided with an iron attraction block.
Preferably, the dummy is hollow inside, and the weight can be controlled by adding water.
Preferably, the longitudinal rod body comprises a pipe storage bin body, a longitudinal guide pipe, a support pipe assembly, an extrusion lifting assembly and an air pumping assembly;
the storage tube bin body is fixed on the bottom plate and internally provided with a tube body furling assembly;
the longitudinal guide pipe is longitudinally arranged, and the bottom of the longitudinal guide pipe is fixed on the storage pipe bin body and is communicated with the inner space of the storage pipe bin body; the length of the longitudinal guide pipe is more than 1.5 meters, and the diameter of the longitudinal guide pipe is more than 0.3 meter;
the inner wall of the longitudinal guide pipe is provided with a deformation limiting block; the deformation limiting block is a cylindrical block body, a through groove is formed in the center of the deformation limiting block, and the through groove is large in upper part and small in lower part;
the supporting tube component comprises an outer-layer tube body, an inner-layer tube body and a cylindrical block;
the outer layer pipe body is a soft belt-shaped pipe body, and two ends of the outer layer pipe body are sealed;
the inner layer pipe body is an elastic round pipe made of rubber, the length of the inner layer pipe body is the same as that of the outer layer pipe body, and two ends of the inner layer pipe body are fixed at two ends of the outer layer pipe body;
the outer layer pipe body is sleeved on the inner layer pipe body, and an airtight space is formed between the outer layer pipe body and the inner layer pipe body;
the cylindrical blocks are cylindrical blocks with the length of less than 0.3 m, the number of the cylindrical blocks is multiple, the cylindrical blocks are arranged in the inner-layer pipe body, the diameter of the cylindrical blocks is less than the inner diameter of the inner-layer pipe body which is not subjected to expansion and contraction, and the diameter difference between the cylindrical blocks and the inner diameter of the inner-layer pipe body is not more than 1 cm; the adjacent columnar blocks are butted together;
the gas pumping assembly is fixed at the top of the outer layer pipe body and used for controlling the gas amount in the closed space under the control of the control unit;
the extrusion lifting assembly is used for controlling the supporting tube assembly to extend out of the longitudinal guiding tube, is positioned in the storage tube bin body and close to the top, and comprises two wheels which are arranged oppositely, a motor controlled by a control unit is arranged in each wheel, and a rubber hose is sleeved on the outer layer of each wheel; when in use, the extrusion lifting component always props against the outer-layer pipe body and extrudes the outer-layer pipe body.
Preferably, the upper moving beam and the lower moving beam are rod bodies with tubular sleeves at two ends, and the inner side walls of the tubular sleeves are provided with a plurality of groups of wheels for driving the upper moving beam and the lower moving beam to move up and down.
Preferably, a stabilizing component is positioned on the longitudinal rod body;
the stabilizing assembly comprises a pulling rope and a stable winch;
the number of the pulling ropes and the number of the stable winches are two, the pulling ropes and the stable winches are symmetrically arranged on two sides of the longitudinal rod body, and the stable winches are fixed on the ground and controlled by the operation of the control unit;
one end of the pulling rope is fixed at the top of the longitudinal rod body, and the other end of the pulling rope is positioned on the stable winch.
Preferably, the top end and the bottom end of the columnar block body are both provided with columnar accommodating grooves, two adjacent accommodating grooves are connected through a connecting pull rope made of elastic materials, and the end part of the connecting pull rope is positioned at the bottom of each accommodating groove;
the connecting pull rope plays a role in assisting splicing of the cylindrical blocks.
Preferably, both the top end and the bottom end of the columnar block body are provided with columnar accommodating grooves;
the rod body splicing assembly comprises a bottom hole, a top hole, a side hole, an insertion rod, an insertion wedge block and a connection pressure spring;
the bottom hole is positioned at the top of the cylindrical block body and is positioned at one side of the accommodating groove;
the top hole is positioned at the bottom of the cylindrical block body and is positioned at one side of the accommodating groove;
the side hole is positioned on the side wall of the accommodating groove at the top of the cylindrical block body, and the length direction of the side hole is vertical to the axial direction of the cylindrical block body;
the side hole is communicated with the bottom hole;
the inserting rod is a cylindrical rod body, the length of the inserting rod is shorter than that of the bottom hole, the inserting rod is normally positioned in the bottom hole, and the bottom of the inserting rod is abutted against the inserting wedge block;
the inserted wedge-shaped block is a wedge-shaped block body, is positioned in the side hole and extends out of the side hole under a normal state;
one end of the connecting pressure spring is fixed at one end, far away from the accommodating groove, of the inserted wedge-shaped block, and the other end of the connecting pressure spring is fixed at the bottom of the side hole;
a through hole is formed in the center of the cylindrical block body, and the axis of the through hole is overlapped with the axis of the cylindrical block body;
an elastic tube body strings all the columnar blocks and the inner space of the elastic tube body is communicated with the air pumping assembly.
Further, the top and the bottom of cylindricality block all are equipped with magnet, and two adjacent cylindricality blocks pass through magnet absorption together, and magnet is used for restricting cylindricality block and rotates around self axis.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
by optimizing the prior art, the safety belt test dynamic and static strength test system comprising the bearing frame body and the dummy lifting device is provided, and the electromagnet is used for realizing the lifting and releasing of the dummy so as to assist in the completion of the test; the safety belt testing device effectively solves the technical problems that safety belt testing equipment in the prior art is complex in operation when testing safety belts, needs a plurality of persons for cooperation test, needs testing personnel to operate at a high position during testing, and is poor in testing safety and low in efficiency; and then realized that the safety belt test sound intensity test system when carrying out the safety belt test simple operation, need not many people cooperation, efficiency of software testing is high and need not the technological effect of operation of ascending a height.
Drawings
FIG. 1 is a schematic view of an appearance structure of a system for testing dynamic and static strength of a safety belt according to the present invention;
FIG. 2 is a schematic structural diagram of a magnet support of the safety belt dynamic and static strength testing system of the invention;
FIG. 3 is a schematic view of a partial structure of a dummy lifting device of the safety belt test dynamic and static strength test system of the present invention;
FIG. 4 is a schematic structural view of a lift ring assembly of the safety belt testing system for testing dynamic and static strength of the invention;
FIG. 5 is a schematic view of the internal structure of the longitudinal rod body of the testing system for testing the dynamic and static strength of the safety belt of the present invention;
FIG. 6 is a schematic structural view of a lower moving beam of the system for testing dynamic and static strength of a safety belt according to the present invention;
FIG. 7 is a simplified diagram of the internal structure of the support tube assembly of the system for testing dynamic and static strength of safety belt according to the present invention;
FIG. 8 is a cross-sectional view of a support tube assembly of the belt testing system for testing dynamic and static strength of the present invention;
FIG. 9 is a sectional view of the deformation restricting block of the testing system for testing dynamic and static strength of the safety belt of the present invention taken along the plane A in FIG. 5;
FIG. 10 is a cross-sectional view of the deformation restricting block of the testing system for testing dynamic and static strength of the safety belt of the present invention taken along the plane B in FIG. 5;
FIG. 11 is a schematic structural diagram of a stabilizing assembly of the test system for testing dynamic and static strength of a safety belt according to the present invention;
FIG. 12 is a schematic view showing a positional relationship between an accommodating groove and a connection cord of the test system for testing dynamic and static strength of a safety belt according to the present invention;
fig. 13 is a schematic structural view of a rod body splicing assembly of the test system for testing dynamic and static strength of a safety belt according to the present invention.
In the figure:
the pipe storage bin comprises a bearing frame body 100, a bottom plate 110, a longitudinal rod body 120, a pipe storage bin body 130, a pipe furling assembly 131, a longitudinal guide pipe 140, a deformation limiting block 141, a support pipe assembly 150, an outer layer pipe body 151, an inner layer pipe body 152, a cylindrical block 153, a containing groove 154, a connecting pull rope 155, a rod body splicing assembly 160, a bottom hole 161, a top hole 162, a side hole 163, an inserting rod 164, an inserting wedge block 165, a connecting compression spring 166, an extruding and lifting assembly 170 and a pumping assembly 180;
the artificial body lifting device 200, an upper cross beam assembly 210, an upper moving beam 211, a magnet bracket 212, a first magnet 213, a second magnet 214, a lower cross beam assembly 220, a lower moving beam 221, a force sensor 222, a hook 223, a lifting ring assembly 230, a sliding ring 231, an adsorption fixing block 234, a connecting belt 232, a belt body furling assembly 233, an artificial body 240 and an attraction block 241;
stabilizing assembly 300, pulling rope 310, stabilizing winch 320.
Detailed Description
To facilitate an understanding of the invention, the present application will now be described more fully hereinafter with reference to the accompanying drawings; the preferred embodiments of the present invention are illustrated in the accompanying drawings, but the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1, which is a schematic view of an appearance structure of the testing system for testing dynamic and static strength of a safety belt according to the present invention; the safety belt test dynamic and static strength test system comprises a bearing frame body 100 and a dummy lifting device 200; the electromagnet is used for realizing the lifting and releasing of the dummy 240 so as to assist in the completion of the test; the safety belt testing system has the advantages that the safety belt testing system is convenient to operate and high in testing efficiency, does not need cooperation of multiple persons and does not need climbing operation when being used for testing the safety belt.
Example one
As shown in fig. 1 to 4, the system for testing dynamic and static strength of a safety belt comprises a carrier body 100, a dummy lifting device 200, a power assembly and a control unit.
The carrier body 100 plays a role of supporting and positioning the dummy lifting device 200, and the main body is a rod and comprises a bottom plate 110 and a longitudinal rod body 120; the bottom plate 110 is fixed on a horizontal ground; the number of the longitudinal rod bodies 120 is two, the two longitudinal rod bodies 120 are longitudinally arranged and parallel to each other, the distance between the two longitudinal rod bodies 120 is greater than 50 cm, and the bottom of the two longitudinal rod bodies is fixed on the top of the bottom plate 110.
The dummy lifting device 200 includes an upper cross member assembly 210, a lower cross member assembly 220, and a lift ring assembly 230;
the upper beam assembly 210 is slidably positioned on the longitudinal rod 120 along the length direction of the longitudinal rod 120 by the driving of the power assembly; the upper beam assembly 210 includes an upper moving beam 211 and a magnet holder 212; the upper moving beam 211 is integrally rod-shaped or plate-shaped and is used for supporting and fixing the magnet bracket 212; the magnet bracket 212 is a frame structure and is fixed at a position close to the center of the upper moving beam 211; as shown in fig. 2, a first magnet 213 and a second magnet 214 are fixed on the magnet support 212, the first magnet 213 and the second magnet 214 are electromagnets and are arranged one above the other, and the distance between the first magnet 213 and the second magnet 214 is greater than 10 cm; the distance between the first magnet 213 and the side of the upper moving beam 211 close to the magnet support 212 is more than 25 cm; the first magnet 213 and the second magnet 214 are controlled by the control unit to be powered on or powered off;
the lower beam assembly 220 is slidably positioned on the longitudinal rod 120 along the length direction of the longitudinal rod 120 under the driving of the power assembly, and is located below the upper beam assembly 210; the lower beam assembly 220 includes a lower moving beam 221, a force sensor 222, and a hook 223; the lower moving beam 221 is integrally rod-shaped or plate-shaped and is used for supporting and fixing the force sensor 222; the force sensor 222 is fixed at a position close to the center of the upper moving beam 211 and is used for testing the maximum impact force when the dummy 240 falls; the hook 223 is fixed at the bottom of the force sensor 222 and is used for hanging a safety belt to be tested;
the lifting ring assembly 230 comprises a sliding ring 231, a connecting belt 232 and a belt body furling assembly 233; the sliding ring 231 is annular and is sleeved on the safety belt to be tested; the belt body furling component 233 is of a winding drum structure, a motor is arranged in the belt body furling component, the operation is carried out under the control of the control unit; the connecting belt 232 is a soft belt body, one end of which is fixed on the sliding ring 231, and the other end of which is wound and positioned on the belt body winding component 233; the material of the sliding ring 231 is iron or an adsorption fixing block 234 fixed with iron thereon; in actual use, the running of the belt body furling component 233 drives the sliding ring 231 to slide along the safety belt to be tested; the bottom of the safety belt to be tested is provided with a dummy 240, and the head of the dummy 240 is provided with an iron attraction block 241.
The power component is used for providing power for the operation of each part of the safety belt test dynamic and static strength test system, the control unit plays a role in controlling the coordinated operation of each part of the safety belt test dynamic and static strength test system, the control unit comprises a length measurement component and a display screen which are arranged on a longitudinal rod body 120, the length measurement component is used for detecting the sliding distance (extending distance) of the safety belt when the safety belt is stressed, the display screen is in signal connection with the force sensor 222 and the distance meter, the length measurement component is preferably a distance meter and is the prior art, and the length measurement component is not described repeatedly herein.
Preferably, the control unit is a combination of a programmable logic controller and a control key.
Preferably, the dummy 240 is hollow inside, and the weight can be controlled by adding water.
When the safety belt testing dynamic and static strength testing system is used for testing:
when static state detection is carried out:
1. firstly, measuring the length of a safety belt to be detected;
2. the lower beam assembly 220 is controlled by the control unit to move downwards, and then the safety belt to be tested and the dummy 240 on the safety belt to be detected are hung on the hook 223;
3. controlling the lower beam assembly 220 to move upwards to a specific height, and hoisting the dummy 240; (within 5 minutes, uniformly loading 15 +/-0.3 KN on the safety belt, and keeping for 3 minutes) measuring the total length of the safety belt body through the length measuring assembly, and calculating the elongation of the safety belt to be detected in the current load state through the control unit;
4. and changing the load of the safety belt, and acquiring a plurality of groups of test data under different loads.
When the dynamic test is carried out:
1. various data (the length of the safety belt, the elongation under various loads and the like) of the static test are obtained through the control unit, and at the moment, the dummy 240 is in a hanging state and the height above the ground is more than 40 cm;
2. controlling the first magnet 213 to be electrified and controlling the upper moving beam 211 to move downwards until the sliding ring 231 is attracted to the first magnet 213;
3. the upper moving beam 211 is controlled to move upwards, and the dummy 240 is lifted up to a specific height required by a test (different heights are required by different types of safety belts) by driving the sliding ring 231 to move step by step;
4. the second magnet 214 is controlled to be energized to fix the dummy 240 to the upper moving beam 211, and thereafter the first magnet 213 is controlled to be de-energized and the slip ring 231 is controlled to be reset;
5. finally, controlling the second magnet 214 to be powered off, throwing the dummy 240 down, and recording the maximum impact force borne by the tested safety belt and the maximum elongation in the dynamic test process by using the force sensor 222 and the length measuring component;
6. and comparing the data, judging whether the tested safety belt is qualified or not, and finishing the test.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the safety belt testing device solves the technical problems that safety belt testing equipment in the prior art is complex in operation when testing safety belts, needs a plurality of persons for cooperation test, needs testing personnel to operate at a high position during testing, and is poor in testing safety and low in efficiency; the safety belt testing system has the advantages that the safety belt testing system is convenient to operate and high in testing efficiency, does not need cooperation of multiple persons and does not need climbing operation when being used for testing the safety belt.
Example two
Considering that a relatively long safety belt needs a relatively high bearing frame body 100 when the test length of the safety belt is relatively long, once the bearing frame body 100 exceeds 5 meters, the daily maintenance and repair difficulty is greatly increased, and the maintenance cost and the safety are affected; aiming at the problems, the embodiment of the application optimizes and expands the structure of the longitudinal rod body 120 on the basis of the embodiment; the method specifically comprises the following steps:
as shown in fig. 5, the longitudinal rod body 120 includes a storage tube bin body 130, a longitudinal guide tube 140, a support tube assembly 150, a squeeze-and-lift assembly 170, and a pumping assembly 180;
the storage tube bin body 130 is a cylindrical bin body with a hollow inner part, is axially parallel to the horizontal ground, is fixed on the bottom plate 110, and is internally provided with a tube furling assembly 131; the tube body furling component 131 is a winding structure fixed on the tube storage bin body 130, operates under the control of the control unit and plays a role in furling and releasing the support tube component 150; the axial direction of the rotating shaft of the tube furling component 131 is vertical to the height direction of the longitudinal rod body 120;
the longitudinal guide pipe 140 is longitudinally arranged, and the bottom of the longitudinal guide pipe is fixed on the storage pipe bin body 130 and is communicated with the inner space of the storage pipe bin body 130; the length of the longitudinal guide tube 140 is more than 1.5 meters, and the diameter is more than 0.3 meter; the inner wall of the longitudinal guide tube 140 is provided with a deformation limiting block 141 for limiting the deformation of the support tube assembly 150 in the longitudinal guide tube 140 so as to facilitate the expansion and contraction of the support tube assembly 150 in the longitudinal guide tube 140; as shown in fig. 9 and 10, the deformation restricting block 141 is a cylindrical block body, and a through groove is formed in the center of the block body, the cross section of the through groove is approximately rhombic, and the through groove has a large upper part and a small lower part;
as shown in fig. 8, the support tube assembly 150 is used for supporting and positioning an upper beam assembly 210 and a lower beam assembly 220, and comprises an outer tube 151, an inner tube 152 and a cylindrical block 153; the outer layer pipe body 151 is a soft belt-shaped pipe body (flat pipe) made of plastic, and two ends of the outer layer pipe body are sealed; the inner pipe body 152 is an elastic round pipe made of rubber, the length of the inner pipe body is the same as that of the outer pipe body 151, and two ends of the inner pipe body are fixed at two ends of the outer pipe body 151; the outer-layer pipe body 151 is sleeved on the inner-layer pipe body 152, and a closed space is formed between the outer-layer pipe body and the inner-layer pipe body; as shown in fig. 7, the cylindrical blocks 153 are cylindrical blocks with a length less than 0.3 m, and a plurality of the cylindrical blocks are arranged in the inner-layer tube 152, and have a diameter smaller than the inner diameter of the inner-layer tube 152 without expansion and contraction, and the difference between the diameters is not more than 1 cm; adjacent columnar blocks 153 abut together;
the extrusion and lifting assembly 170 is used for controlling the support tube assembly 150 to extend out of the longitudinal guide tube 140, is positioned in the storage tube bin body 130 close to the top, and is provided with two oppositely arranged wheels, a motor controlled by a control unit is arranged in each wheel, and a rubber hose is sleeved on the outer layer of each wheel; when in use, the extrusion lifting assembly 170 always butts against the outer pipe body 151 and extrudes the outer pipe body 151;
the pumping assembly 180 is fixed on the top of the outer tube 151 and is used for controlling the amount of gas in the enclosed space under the control of a control unit.
As shown in fig. 6, the upper moving beam 211 and the lower moving beam 221 are rod bodies each having a tubular sleeve at both ends, and the inner side wall of the tubular sleeve is provided with a plurality of sets of wheels for driving the upper moving beam 211 and the lower moving beam 221 to move up and down.
In order to further improve the stability of the longitudinal rod 120, it is preferable that, as shown in fig. 11, a stabilizing member 300 is further positioned on the longitudinal rod 120; the stabilizing assembly 300 includes a pulling rope 310 and a stabilizing winch 320; the number of the pulling rope 310 and the number of the stable winches 320 are two, the pulling rope 310 and the stable winches 320 are symmetrically arranged on two sides of the longitudinal rod body 120, and the stable winches 320 are fixed on the ground and controlled by the control unit to operate; the pulling rope 310 is fixed at one end to the top of the longitudinal rod 120 and at the other end positioned on the stable winch 320.
Preferably, as shown in fig. 12, the top end and the bottom end of the cylindrical block 153 are provided with cylindrical receiving grooves 154, two adjacent receiving grooves 154 are connected through a connecting pull rope 155 made of an elastic material, and the end of the connecting pull rope 155 is located at the bottom of the receiving groove 154; the presence of the connecting cord 155 serves to assist the splicing of the cylindrical blocks 153 to one another.
When the longitudinal rod body 120 of the embodiment of the application is used: the tube body furling assembly 131 and the extrusion lifting assembly 170 operate simultaneously, so that the supporting tube assembly 150 extends out of the longitudinal guide tube 140 along the deformation limiting block 141, and meanwhile, the air pumping assembly 180 is controlled to pump air to blow the outer tube body 151 and enable the inner tube body 152 to cling to the cylindrical block 153 (to limit the movement of the cylindrical block 153) until the longitudinal rod body 120 extends to a required height; when the maintenance is needed or the test of the safety belt with shorter length is needed, the supporting tube component 150 is controlled to be shortened.
EXAMPLE III
In order to further improve the stability of the longitudinal rod 120 in the using process, the rod splicing assembly 160 is added on the basis of the above embodiment in the embodiment of the present application, and the stability of the longitudinal rod 120 is further improved by further reducing the relative movement of the columnar blocks 153, specifically:
as shown in fig. 13, the cylindrical blocks 153 are provided with cylindrical receiving grooves 154 at the top and bottom ends;
the top and the bottom of each columnar block 153 are provided with magnets, two adjacent columnar blocks 153 are adsorbed together through the magnets, and the magnets are used for limiting the rotation of the columnar blocks 153 around the axis of the columnar blocks 153; the rod body splicing assembly 160 comprises a bottom hole 161, a top hole 162, a side hole 163, an insertion rod 164, an insertion wedge block 165 and a connection compression spring 166; the bottom hole 161 is positioned at the top of the columnar block 153 and at one side of the accommodating groove 154, and the depth is more than 4 cm; the top hole 162 is located at the bottom of the columnar block 153 and at one side of the accommodating groove 154, and the depth is greater than 2 cm; the bottom hole 161 corresponds to the top hole 162; the side hole 163 is located on the side wall of the receiving groove 154 at the top of the cylindrical block 153, and the length direction is perpendicular to the axial direction of the cylindrical block 153; the side hole 163 is in communication with the bottom hole 161; the insertion rod 164 is a cylindrical rod body, the length of the insertion rod is shorter than that of the bottom hole 161, the insertion rod is normally located in the bottom hole 161, and the bottom of the insertion rod is abutted against the insertion wedge block 165; the insert wedge block 165 is a wedge-shaped block body, is positioned in the side hole 163, and normally extends out of the side hole 163; one end of the connecting compression spring 166 is fixed at one end of the inserted wedge block 165 far away from the accommodating groove 154, and the other end of the connecting compression spring is fixed at the bottom of the side hole 163 and is in a stretching state in a normal state; a through hole is formed in the center of the cylindrical block 153, and the axis of the through hole is overlapped with the axis of the cylindrical block 153; an elastic tube body strings all the cylindrical blocks 153 and the inner space of the elastic tube body is communicated with the air pumping assembly 180; after the longitudinal rod 120 is extended or shortened to a required length, the control unit controls the operation of the pumping assembly 180, so that the elastic tube is expanded to extrude the wedge-shaped insert block 165, the wedge-shaped insert block 165 supports the insert rod 164, and the insert rod 164 is inserted into the top hole 162 to limit the movement of the cylindrical block 153.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a safety belt test dynamic and static intensity test system which characterized in that: comprises a bearing frame body (100) and a dummy lifting device (200);
the bearing frame body (100) comprises a base plate (110) and a longitudinal rod body (120);
the dummy lifting device (200) comprises an upper cross beam assembly (210), a lower cross beam assembly (220) and a lifting ring assembly (230);
the upper beam assembly (210) and the lower beam assembly (220) are positioned on the longitudinal rod body (120) in a sliding manner;
the upper beam assembly (210) comprises an upper moving beam (211) and a magnet bracket (212) fixed on the upper moving beam (211); a first magnet (213) and a second magnet (214) are fixed on the magnet bracket (212), and are arranged one above the other and have a distance larger than 10 cm; the distance between the first magnet (213) and one side of the upper moving beam (211) close to the magnet bracket (212) is more than 25 cm;
the lower cross beam assembly (220) comprises a lower moving beam (221), a force sensor (222) and a hook (223), the force sensor (222) is fixed on the upper moving beam (211), and the hook (223) is fixed at the bottom of the force sensor (222);
the lifting ring assembly (230) comprises a sliding ring (231), a connecting belt (232) and a belt body furling assembly (233);
the sliding ring (231) is annular and is sleeved on the safety belt to be tested;
the connecting belt (232) is a soft belt body, one end of the connecting belt is fixed on the sliding ring (231), and the other end of the connecting belt is wound and positioned on the belt body furling assembly (233);
the bottom of the safety belt to be tested is provided with a dummy (240), and the head of the dummy (240) is provided with an iron attraction block body (241).
2. The safety belt testing dynamic and static strength testing system according to claim 1, wherein: the dummy (240) is hollow inside and can control the weight by adding water.
3. The safety belt testing dynamic and static strength testing system according to claim 1 or 2, characterized in that: the longitudinal rod body (120) comprises a storage pipe bin body (130), a longitudinal guide pipe (140), a support pipe component (150), an extrusion lifting component (170) and an air pumping component (180);
the storage tube bin body (130) is fixed on the bottom plate (110) and internally provided with a tube body furling assembly (131);
the longitudinal guide pipe (140) is longitudinally arranged, and the bottom of the longitudinal guide pipe is fixed on the storage pipe bin body (130) and is communicated with the inner space of the storage pipe bin body (130); the length of the longitudinal guide pipe (140) is more than 1.5 meters, and the diameter of the longitudinal guide pipe is more than 0.3 meter;
the inner wall of the longitudinal guide pipe (140) is provided with a deformation limiting block (141); the deformation limiting block (141) is a cylindrical block body, a through groove is formed in the center of the deformation limiting block, and the through groove is large in the upper part and small in the lower part;
the support tube assembly (150) comprises an outer tube body (151), an inner tube body (152) and a cylindrical block body (153);
the outer layer pipe body (151) is a soft belt-shaped pipe body, and two ends of the outer layer pipe body are sealed;
the inner layer pipe body (152) is an elastic round pipe made of rubber, the length of the inner layer pipe body is the same as that of the outer layer pipe body (151), and two ends of the inner layer pipe body are fixed at two ends of the outer layer pipe body (151);
the outer layer pipe body (151) is sleeved on the inner layer pipe body (152), and a closed space is formed between the outer layer pipe body and the inner layer pipe body;
the cylindrical blocks (153) are cylindrical blocks with the length less than 0.3 m, the number of the cylindrical blocks is multiple, the cylindrical blocks are arranged in the inner-layer pipe body (152), the diameter of the cylindrical blocks is smaller than the inner diameter of the inner-layer pipe body (152) which is not subjected to expansion and contraction, and the diameter difference between the cylindrical blocks and the inner diameter of the inner-layer pipe body is not more than 1 cm; the adjacent columnar blocks (153) are butted together;
the air pumping assembly (180) is fixed at the top of the outer pipe body (151) and is used for controlling the amount of air in the closed space under the control of a control unit;
the extrusion and lifting assembly (170) is used for controlling the support pipe assembly (150) to extend out of the longitudinal guide pipe (140), is positioned in the storage pipe bin body (130) close to the top and is provided with two oppositely arranged wheels, a motor controlled by a control unit is arranged in each wheel, and a rubber hose is sleeved on the outer layer of each wheel; when in use, the extrusion lifting component (170) always props against the outer-layer pipe body (151) and extrudes the outer-layer pipe body (151).
4. The safety belt testing dynamic and static strength testing system according to claim 3, characterized in that: the upper moving beam (211) and the lower moving beam (221) are rod bodies, both ends of each rod body are provided with tubular sleeves, and the inner side walls of the tubular sleeves are provided with a plurality of groups of wheels used for driving the upper moving beam (211) and the lower moving beam (221) to move up and down.
5. The safety belt testing dynamic and static strength testing system according to claim 3, characterized in that: a stabilizing component (300) is also positioned on the longitudinal rod body (120);
the stabilizing assembly (300) comprises a pulling rope (310) and a stabilizing winch (320);
the number of the pulling ropes (310) and the number of the stable winches (320) are two, the pulling ropes and the stable winches are symmetrically arranged on two sides of the longitudinal rod body (120), and the stable winches (320) are fixed on the ground and controlled by the operation of the control unit;
one end of the pulling rope (310) is fixed at the top of the longitudinal rod body (120), and the other end is positioned on the stable winch (320).
6. The safety belt testing dynamic and static strength testing system according to claim 3, characterized in that: the top end and the bottom end of each cylindrical block (153) are provided with a cylindrical accommodating groove (154), two adjacent accommodating grooves (154) are connected through a connecting pull rope (155) made of elastic materials, and the end part of the connecting pull rope (155) is positioned at the bottom of each accommodating groove (154);
the connecting rope (155) plays a role of assisting the columnar blocks (153) to be spliced with each other.
7. The belt testing dynamic and static strength testing system of claim 3, wherein: the top end and the bottom end of the cylindrical block body (153) are provided with cylindrical accommodating grooves (154);
the rod body splicing assembly (160) comprises a bottom hole (161), a top hole (162), a side hole (163), an insertion rod (164), an insertion wedge block (165) and a connection compression spring (166);
the bottom hole (161) is positioned at the top of the cylindrical block body (153) and is positioned at one side of the accommodating groove (154);
the top hole (162) is positioned at the bottom of the cylindrical block body (153) and is positioned at one side of the accommodating groove (154);
the side hole (163) is positioned on the side wall of the accommodating groove (154) at the top of the cylindrical block body (153), and the length direction of the side hole is vertical to the axial direction of the cylindrical block body (153);
the side hole (163) is communicated with the bottom hole (161);
the inserting rod (164) is a cylindrical rod body, the length of the inserting rod is shorter than that of the bottom hole (161), the inserting rod is normally positioned in the bottom hole (161), and the bottom of the inserting rod is abutted against the inserting wedge block (165);
the insert wedge block (165) is a wedge-shaped block body, is positioned in the side hole (163) and normally extends out of the side hole (163);
one end of the connecting compression spring (166) is fixed at one end of the inserted wedge block (165) far away from the accommodating groove (154), and the other end of the connecting compression spring is fixed at the bottom of the side hole (163);
a through hole is formed in the center of the cylindrical block (153), and the axis of the through hole is overlapped with the axis of the cylindrical block (153);
one elastic pipe body connects all the cylindrical blocks (153) in series, and the inner space of the elastic pipe body is communicated with the air pumping assembly (180).
8. The belt testing dynamic and static strength testing system of claim 7, wherein: the top and the bottom of the cylindrical block body (153) are provided with magnets, two adjacent cylindrical block bodies (153) are adsorbed together through the magnets, and the magnets are used for limiting the cylindrical block bodies (153) to rotate around the axis of the magnets.
9. A safety belt testing method is characterized in that: mating the seat belt test dynamic and static strength test system of claim 1; the method comprises the following steps:
1) Firstly, measuring the length of a safety belt to be detected;
2) The lower beam assembly (220) is controlled to move downwards through the control unit, and then the safety belt to be tested and the dummy (240) on the safety belt to be detected are hung on the hook (223);
3) Controlling the lower beam assembly (220) to move upwards to a specific height, and hoisting the dummy (240); the total length of the safety belt body is measured through the length measuring assembly, and the elongation of the safety belt to be detected in the current load state is calculated through the control unit;
4) And (4) changing the load of the safety belt and acquiring a plurality of groups of test data under different loads.
10. A safety belt testing method is characterized in that: mating the seat belt test dynamic and static strength test system of claim 1; the method comprises the following steps:
1) Various data of the static test are obtained through the control unit, and at the moment, the dummy (240) is in a hanging state and the height above the ground is more than 40 cm;
2) Controlling the first magnet (213) to be electrified and controlling the upper moving beam (211) to move downwards until the sliding ring (231) is attracted to the first magnet (213);
3) Controlling the upper moving beam (211) to move upwards, and gradually lifting the dummy (240) to a specific height required by the test by driving the sliding ring (231) to move;
4) Controlling the second magnet (214) to be electrified, fixing the dummy (240) on the upper moving beam (211), and then controlling the first magnet (213) to be powered off and controlling the sliding ring (231) to reset;
5) Finally, controlling the second magnet (214) to be powered off, throwing down the dummy (240), and recording the maximum impact force born by the safety belt to be tested and the maximum elongation in the dynamic test process by using the force sensor (222) and the length measuring component;
6) And comparing the data, judging whether the tested safety belt is qualified or not, and finishing the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310187717.0A CN115876453B (en) | 2023-03-02 | 2023-03-02 | Dynamic and static strength testing system and method for safety belt test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310187717.0A CN115876453B (en) | 2023-03-02 | 2023-03-02 | Dynamic and static strength testing system and method for safety belt test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115876453A true CN115876453A (en) | 2023-03-31 |
| CN115876453B CN115876453B (en) | 2023-05-09 |
Family
ID=85761752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310187717.0A Active CN115876453B (en) | 2023-03-02 | 2023-03-02 | Dynamic and static strength testing system and method for safety belt test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115876453B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490998A (en) * | 2023-11-06 | 2024-02-02 | 山东滨州鲁鹏化纤制品有限公司 | Safety belt performance testing device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323199A (en) * | 2012-03-23 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Jig for testing dynamic impact strength of chain and rope |
| CN203785861U (en) * | 2014-04-28 | 2014-08-20 | 苏州热工研究院有限公司 | Personal protection tool fall/impact testing apparatus |
| CN208420253U (en) * | 2018-06-26 | 2019-01-22 | 新疆送变电有限公司 | Safety belt dynamic load experimental bench and safety belt dynamic load experimental provision |
| US20200141848A1 (en) * | 2018-11-05 | 2020-05-07 | GM Global Technology Operations LLC | Seat belt test apparatus |
| CN111442893A (en) * | 2020-04-22 | 2020-07-24 | 鲁普耐特集团有限公司 | Comprehensive performance tester for falling safety protection system and testing method thereof |
| CN111537177A (en) * | 2020-05-12 | 2020-08-14 | 无锡江炟建设工程质量检测有限公司 | Detection apparatus for safety device |
| CN211652053U (en) * | 2020-04-10 | 2020-10-09 | 山东蓝镖防护科技有限公司 | Safety belt test device |
| CN112504602A (en) * | 2020-12-10 | 2021-03-16 | 鲁普耐特集团有限公司 | Rope belt impact tester and testing method thereof |
| CN213813150U (en) * | 2020-12-03 | 2021-07-27 | 南京工程学院 | Tensile, impact integral type testing machine |
| CN114720259A (en) * | 2022-03-26 | 2022-07-08 | 江西智盛科技有限公司 | Sewing thread tension testing device for screening strength |
-
2023
- 2023-03-02 CN CN202310187717.0A patent/CN115876453B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323199A (en) * | 2012-03-23 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Jig for testing dynamic impact strength of chain and rope |
| CN203785861U (en) * | 2014-04-28 | 2014-08-20 | 苏州热工研究院有限公司 | Personal protection tool fall/impact testing apparatus |
| CN208420253U (en) * | 2018-06-26 | 2019-01-22 | 新疆送变电有限公司 | Safety belt dynamic load experimental bench and safety belt dynamic load experimental provision |
| US20200141848A1 (en) * | 2018-11-05 | 2020-05-07 | GM Global Technology Operations LLC | Seat belt test apparatus |
| CN211652053U (en) * | 2020-04-10 | 2020-10-09 | 山东蓝镖防护科技有限公司 | Safety belt test device |
| CN111442893A (en) * | 2020-04-22 | 2020-07-24 | 鲁普耐特集团有限公司 | Comprehensive performance tester for falling safety protection system and testing method thereof |
| CN111537177A (en) * | 2020-05-12 | 2020-08-14 | 无锡江炟建设工程质量检测有限公司 | Detection apparatus for safety device |
| CN213813150U (en) * | 2020-12-03 | 2021-07-27 | 南京工程学院 | Tensile, impact integral type testing machine |
| CN112504602A (en) * | 2020-12-10 | 2021-03-16 | 鲁普耐特集团有限公司 | Rope belt impact tester and testing method thereof |
| CN114720259A (en) * | 2022-03-26 | 2022-07-08 | 江西智盛科技有限公司 | Sewing thread tension testing device for screening strength |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490998A (en) * | 2023-11-06 | 2024-02-02 | 山东滨州鲁鹏化纤制品有限公司 | Safety belt performance testing device |
| CN117490998B (en) * | 2023-11-06 | 2024-05-28 | 山东滨州鲁鹏化纤制品有限公司 | Safety belt performance testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115876453B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115876453A (en) | Safety belt test dynamic and static strength test system and test method | |
| CN102788730B (en) | Device for testing bending fatigue of wire rope for elevator, and testing method thereof | |
| CN111874693B (en) | Automatic coil-unloading and shaft-mounting device and automatic coil-unloading and shaft-mounting method | |
| WO2020073583A1 (en) | Pulley block type vertical well hoisting joint-test device and method | |
| CN112623284A (en) | Rocket booster binding and rocket docking device and method | |
| CN114852866A (en) | Detection apparatus for electric block | |
| CN116891183A (en) | Material overhead hoist is used in bridge engineering construction | |
| CN102587270B (en) | Climbing device for cables of cable-stayed bridge | |
| CN109250595B (en) | Console mode vertical shaft hoisting joint debugging test device and method | |
| CN105157978B (en) | A kind of energy saving system safety testing device of conveyer belt and sample handling method | |
| CN116969308B (en) | Stabilizing device and bridge crane | |
| CN116495659B (en) | Stacker with self-adaptation adjustment function | |
| CN220490552U (en) | Portable cement pole detection device | |
| CN205958278U (en) | Detection apparatus for elevator air rail | |
| CN215338945U (en) | Quick detection device of horizontal hank mill | |
| CN205932827U (en) | Elevator air rail detection device's counter weight structure | |
| CN116840054A (en) | Portable cement pole intelligent detection device | |
| CN220794598U (en) | Performance detection device for aerospace damper | |
| CN213580529U (en) | Novel abrasion tester for traction wheel rope | |
| CN217878302U (en) | Fatigue test device for crane lifting system | |
| CN217878677U (en) | Fatigue comparison verification device for crane hoisting system | |
| CN213518782U (en) | Suspension operation simulation training device | |
| CN112281838A (en) | Water surface tamper for civil construction | |
| CN219296983U (en) | Anti-falling brick hanging frame | |
| CN205603170U (en) | Active pressurised water nuclear power station master -control room large screen hoisting device of non - |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |