CN112268671A - Cable-carrying machine loading test rack device - Google Patents
Cable-carrying machine loading test rack device Download PDFInfo
- Publication number
- CN112268671A CN112268671A CN202011222296.3A CN202011222296A CN112268671A CN 112268671 A CN112268671 A CN 112268671A CN 202011222296 A CN202011222296 A CN 202011222296A CN 112268671 A CN112268671 A CN 112268671A
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- guide rail
- fixed
- support
- tested
- loading test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a cable carrying machine loading test frame device in the technical field of steel member loading tests, which comprises: a pair of support assemblies disposed side-to-side to support the truss girder under test; the lifting beam is parallel to the tested truss girder and is positioned obliquely below the tested truss girder, and two supporting assemblies respectively support and fix two ends of the lifting beam; and the two steel strand jacks are respectively arranged at the two ends of the lifting beam, and stranded ropes of the two steel strand jacks are respectively connected with and pulled down from the two ends of the tested truss beam. The bending degree of the truss girder to be tested can be well checked, the structure is stable, and the supporting strength is high.
Description
Technical Field
The invention relates to the technical field of steel member loading tests, in particular to a cable loader loading test frame device.
Background
The truss girder is a steel member, is formed by combining a plurality of members, has very strong structural strength, and is widely used for buildings such as bridges, houses and the like at present. Since the truss girder is subjected to an extremely strong load, a special apparatus is required to check the flexural characteristics of the truss girder.
Disclosure of Invention
The invention aims to provide a cable loader loading test rack device which can well test the deflection degree of a truss beam to be tested, has a stable structure and high supporting strength.
The purpose of the invention is realized as follows: a cable loader loading test rack device comprises:
a pair of support assemblies disposed side-to-side to support the truss girder under test;
the lifting beam is parallel to the tested truss girder and is positioned obliquely below the tested truss girder, and two supporting assemblies respectively support and fix two ends of the lifting beam; and
the two steel strand jacks are respectively arranged at the two ends of the lifting beam, and stranded ropes of the two steel strand jacks are respectively connected with and pulled down from the two ends of the tested truss beam;
wherein each support assembly comprises:
a platform foundation fixed on the ground;
a main body frame fixed on the platform foundation;
a guide rail fixed obliquely above the main body frame; and
the crawling beam is used for supporting and fixing the end part of the tested truss girder;
the climbing beam is erected on the guide rail in a deviation-adjustable mode and driven by the downward pulling acting force of the steel strand jack to deviate and adjust on the guide rail along with the tested truss beam;
and two ends of the lifting beam are respectively and fixedly connected with the main body frames of the two supporting assembly parts.
Furthermore, the upper end and the lower end of the climbing beam of each support assembly are connected with traction cables, and the two traction cables pull the climbing beam along the guide rail in opposite directions so as to stabilize the position of the climbing beam on the guide rail.
Furthermore, the upper end and the lower end of the crawling beam of each supporting assembly are respectively fixed with an adjusting support, at least two groups of rolling idler wheels on the guide rail are rotatably connected onto each adjusting support, the crawling beam is provided with a plurality of hoop assemblies, the hoop assemblies tightly hold the guide rail and deflect along with the crawling beam during the deflection adjustment of the crawling beam.
Furthermore, a lower limiting seat used for limiting the lower offset displacement limit of the crawling beam is fixed at the lower end of the guide rail.
Furthermore, an upper limiting seat used for limiting the upper position limit of the crawling beam is fixed at the upper end of the guide rail.
Further, the support assembly further comprises an end bracket, and the end bracket is simultaneously fixedly connected with the upper end and the lower end of the guide rail and the main body frame.
Further, the end bracket comprises a first inclined support rod which is used for obliquely supporting and fixing the upper end of the guide rail, and the bottom of the first support rod is fixed at the bottom of the main body frame.
Further, the end support further comprises a second inclined supporting rod, the second supporting rod is obliquely supported and fixed at the lower end of the guide rail, and the bottom of the second supporting rod is fixed at the bottom of the main body frame.
Further, the end bracket further includes a reinforcing bar for assisting the first support bar in supporting and fixing the upper end of the guide rail.
Further, main body frame includes a pair of perpendicular roof beam that supports and fixed guide to and the crossbeam of two perpendicular roof beam bottoms of a horizontal fixed connection, perpendicular roof beam bottom fixed mounting is on the platform basis, main body frame still includes two sets of bracing pole groups, and two sets of bracing pole groups correspond two perpendicular roof beams respectively, and every bracing pole group includes a plurality of diagonal rods that encircle perpendicular roof beam, and the diagonal rod upper end fixed connection of every bracing pole group erects the roof beam upper end, and the diagonal rod lower extreme fixed connection platform basis of every bracing pole group.
The invention has the beneficial effects that:
1. the deflection degree of a truss girder to be tested can be well checked, when a loading test is carried out, two steel strand jacks are started simultaneously, so that two ends of the truss girder to be tested are simultaneously subjected to downward tension, when the loading force is increased to a certain degree, the truss girder to be tested can drive two sets of climbing girders and anchor ear assemblies to slowly slide and deflect downwards along a guide rail, the anchor ear assemblies tightly hold the guide rail and can generate a relative friction effect, the offset and the deflection speed of the truss girder to be tested and the climbing girders are remarkably reduced, the aim of controllable adjustment of the climbing girders is fulfilled, the climbing girders are prevented from being deformed due to overload, a certain protection effect on the truss girder to be tested can be achieved, an upper limit seat and a lower limit seat are arranged on the guide rail, the truss girder to be tested can be prevented from slipping from the guide rail in the test process, and the safety of the test process can be fully guaranteed;
2. the structure is firm, and support intensity is high, owing to set up first bracing piece and second bracing piece, can be so that the structural strength at guide rail both ends can be strengthened, owing to set up the bracing piece group similar to the tripod structure, can strengthen the structural strength of two perpendicular roof beams of main body frame for main body frame can firmly support the guide rail, with the support intensity and the structural strength of strengthening the guide rail, satisfies load test's mechanical requirement.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is an end view of the present invention.
Fig. 4 is a perspective view of a single support assembly.
In the figure, 1-platform foundation, 2-main body frame, 2 a-vertical beam, 2 b-cross beam, 2 c-diagonal strut group, 3-end support, 301-first support rod, 302-reinforcing rod, 303-second support rod, 4-guide rail, 5-upper limiting seat, 6-climbing beam, 7-adjusting support seat, 8-roller, 9-traction cable, 10-hoop component, 11-lower limiting seat, 12-tested truss beam, 13-steel strand jack and 14-lifting beam.
Detailed Description
The invention will be further described with reference to the accompanying figures 1-4 and the specific embodiments.
As shown in fig. 1 and 2, the loader loading test rack device comprises:
a pair of left and right arranged support assemblies for supporting the truss girder 12 under test;
a horizontal lifting beam 14, the lifting beam 14 is parallel to the tested truss girder 12 and is positioned at the oblique lower part of the tested truss girder 12, and two supporting assemblies respectively support and fix two ends of the lifting beam 14; and
and the two steel strand jacks 13 are respectively arranged at two ends of the lifting beam 14, and stranded ropes of the two steel strand jacks 13 are respectively connected with and pulled down two ends of the tested truss beam 12.
Wherein each support assembly comprises:
a platform foundation 1 fixed on the ground;
a main body frame 2 fixed on the platform base 1;
a guide rail 4 fixed obliquely above the main body frame 2; and
and the crawling beam 6 is used for supporting and fixing the end part of the tested truss girder 12.
The creeping beam 6 is erected on the guide rail 4 in a manner of offset adjustment, and is driven by the pulling-down acting force of the steel strand jack 13 to be offset adjusted on the guide rail 4 along with the tested truss beam 12.
The two ends of the lifting beam 14 are respectively fixedly connected with the main body frames 2 of the two supporting assemblies.
As shown in fig. 3-4, the crawl beams 6 of each support assembly are connected at their upper and lower ends with traction ropes 9, and the two traction ropes 9 pull the crawl beams 6 in opposite directions along the guide rails 4 to stabilize the position of the crawl beams 6 on the guide rails 4. Two traction ropes 9 are wound on the winch, and the winch is driven to rotate by a hydraulic motor or an electric motor so as to tension the traction ropes 9, so that a certain locking effect is formed on the position of the crawling beam 6.
The upper and lower ends of the creeping beam 6 of each supporting assembly are all fixed with an adjusting support 7, at least two groups of rolling idler wheels 8 on the guide rail 4 are connected to each adjusting support 7 in a rotating mode, a plurality of hoop components 10 are arranged on the creeping beam 6, the hoop components 10 tightly hold the guide rail 4, the creeping beam 6 deviates along with the creeping beam 6 when the creeping beam 6 deviates, the hoop components 10 can overcome the relative friction force with the guide rail 4 to slowly move when the creeping beam 6 deviates, the idler wheels 8 are used for properly relieving the friction resistance generated when the creeping beam 6 deviates and adjusts, and the damage to the guide rail 4 is reduced as much as possible.
A lower limiting seat 11 for limiting the lower offset displacement limit of the crawling beam 6 is fixed at the lower end of the guide rail 4; an upper limiting seat 5 used for limiting the upper position limit of the crawling beam 6 is fixed at the upper end of the guide rail 4.
The support assembly further comprises end brackets which are fixedly connected with the upper end and the lower end of the guide rail 4 and the main body frame 2 at the same time and are used for supporting the upper end and the lower end of the guide rail 4.
The end bracket includes a first inclined supporting rod 301, the first supporting rod 301 supports and fixes the upper end of the guide rail 4 in an inclined manner, and the bottom of the first supporting rod 301 is fixed to the bottom of the main body frame 2. The end bracket further includes a reinforcing bar 302 for assisting the first support bar 301 in supporting and fixing the upper end of the guide rail 4, and the reinforcing bar 302 is further fixed to the main body frame 2.
The end bracket further comprises a second inclined support bar 303, the second support bar 303 is obliquely supported and fixed at the lower end of the guide rail 4, and the bottom of the second support bar 303 is fixed at the bottom of the main body frame 2.
Above-mentioned main body frame 2 includes a pair of vertical beam 2a that supports and fixed guide 4 to and the crossbeam 2b of two vertical beam 2a bottoms of a horizontal fixed connection, vertical beam 2a bottom fixed mounting is on platform basis 1, main body frame 2 still includes two sets of bracing piece group 2c, two sets of bracing piece group 2c correspond two vertical beam 2a respectively, every bracing piece group 2c includes a plurality of diagonal rods that encircle vertical beam 2a, the diagonal rod upper end fixed connection vertical beam 2a upper end of every bracing piece group 2c, the diagonal rod lower extreme fixed connection platform basis 1 of every bracing piece group 2 c. The two diagonal brace sets 2c are used for respectively enhancing the structural strength of the two vertical beams 2a, so that the two vertical beams 2a can support the guide rail 4 more stably.
When loading test is carried out, two steel strand jacks 13 are started simultaneously, so that two ends of the truss girder 12 to be tested are simultaneously pulled downwards to simulate the use environment to load the truss girder 12 to be tested, when the loading force is increased to a certain degree, the tested truss girder 12 will drive the two sets of crawling girders 6 and the hoop component 10 to slowly slide and deflect downwards along the guide rail 4, because the hoop component 10 tightly holds the guide rail 4, relative friction action can be generated, the offset and the offset speed of the tested truss girder 12 and the crawling girder 6 are obviously reduced, the crawling girder 6 achieves the purpose of controllable adjustment, so as to prevent the creeping beam 6 from deforming due to overload, and can also play a certain role in protecting the tested truss girder 12, in addition, the upper limiting seat 5 and the lower limiting seat 11 are arranged on the guide rail 4, so that the truss girder 12 to be tested can be prevented from slipping off the guide rail 4 in the test process, and the safety of the test process can be fully guaranteed.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a cable carries quick-witted loading test frame device which characterized in that includes:
a pair of left and right arranged support assemblies for supporting the truss girder (12) under test;
a horizontal lifting beam (14), wherein the lifting beam (14) is parallel to the tested truss girder (12) and is arranged obliquely below the tested truss girder (12), and two supporting assemblies respectively support and fix two ends of the lifting beam (14); and
the device comprises a pair of hydraulic steel strand jacks (13), wherein the two steel strand jacks (13) are respectively installed at two ends of a lifting beam (14), and stranded ropes of the two steel strand jacks (13) are respectively connected with and pulled down two ends of a tested truss beam (12);
wherein each support assembly comprises:
a platform foundation (1) fixed on the ground;
a main body frame (2) fixed on the platform base (1);
a guide rail (4) fixed obliquely above the main body frame (2); and
the climbing beam (6) is used for supporting and fixing the end part of the tested truss girder (12);
the climbing beam (6) is erected on the guide rail (4) in a deviation-adjustable manner and driven by a pull-down acting force of a steel strand jack (13) to deviate and adjust on the guide rail (4) along with the tested truss beam (12);
and two ends of the lifting beam (14) are respectively and fixedly connected with the main body frames (2) of the two support assemblies.
2. The loader loading test rack device according to claim 1, characterized in that: the upper end and the lower end of the crawling beam (6) of each supporting assembly are connected with traction cables (9), and the two traction cables (9) pull the crawling beam (6) along the guide rail (4) in opposite directions so as to stabilize the position of the crawling beam (6) on the guide rail (4).
3. The loader loading test rack device according to claim 2, characterized in that: the lower extreme all is fixed with regulation support (7) about climbing roof beam (6) of every supporting assembly, and every is adjusted at least to rotate on support (7) and is connected with two sets of rolling gyro wheel (8) on guide rail (4), be equipped with a plurality of staple bolt subassemblies (10) on climbing roof beam (6), staple bolt subassembly (10) hold guide rail (4) tightly to along with climbing roof beam (6) skew when climbing roof beam (6) skew is adjusted.
4. The loader loading test rack device according to claim 3, characterized in that: the lower limiting seat (11) used for limiting the lower deflection displacement limit of the crawling beam (6) is fixed at the lower end of the guide rail (4).
5. The loader loading test rack device according to claim 3, characterized in that: and an upper limiting seat (5) used for limiting the upper position limit of the crawling beam (6) is fixed at the upper end of the guide rail (4).
6. The loader loading test rack device according to claim 1, characterized in that: the support assembly further comprises an end bracket which is fixedly connected with the upper end and the lower end of the guide rail (4) and the main body frame (2) at the same time.
7. The loader loading test rack device according to claim 6, characterized in that: the end support comprises a first inclined supporting rod (301), the first supporting rod (301) is obliquely supported and the upper end of the fixed guide rail (4) is fixed at the bottom of the main body frame (2).
8. The loader loading test rack device according to claim 7, characterized in that: the end support further comprises a second inclined supporting rod (303), the second supporting rod (303) is obliquely supported and the lower end of the guide rail (4) is fixed, and the bottom of the second supporting rod (303) is fixed to the bottom of the main body frame (2).
9. The loader loading test rack device according to claim 8, characterized in that: the end bracket further comprises a reinforcing rod (302) for assisting the first support rod (301) in supporting and fixing the upper end of the guide rail (4).
10. The loader loading test rack device according to claim 9, wherein: main body frame (2) include a pair of perpendicular roof beam (2a) that supports and fixed guide (4) to and crossbeam (2b) of two perpendicular roof beams (2a) bottoms of a horizontal fixed connection, perpendicular roof beam (2a) bottom fixed mounting is on platform basis (1), main body frame (2) still include two sets of bracing pole group (2c), and two sets of bracing pole group (2c) correspond two perpendicular roof beams (2a) respectively, and every bracing pole group (2c) includes a plurality of diagonal rods that encircle perpendicular roof beam (2a), and the diagonal rod upper end fixed connection of every bracing pole group (2c) erects roof beam (2a) upper end, the diagonal rod lower extreme fixed connection platform basis (1) of every bracing pole group (2 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222296.3A CN112268671B (en) | 2020-11-05 | 2020-11-05 | Cable-carrying machine loading test rack device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222296.3A CN112268671B (en) | 2020-11-05 | 2020-11-05 | Cable-carrying machine loading test rack device |
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| CN112268671A true CN112268671A (en) | 2021-01-26 |
| CN112268671B CN112268671B (en) | 2022-11-01 |
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