CN213632646U

CN213632646U - Fixing device suitable for support and hanger fatigue test

Info

Publication number: CN213632646U
Application number: CN202023284496.XU
Authority: CN
Inventors: 张平萍; 张钫; 景尤佳; 史铭楷; 孙兵团
Original assignee: Sinosteel Nanjing New Material Research Institute Co Ltd; Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Current assignee: Sinosteel Nanjing New Material Research Institute Co Ltd; Sinosteel Zhengzhou Research Institute of Steel Wire Products Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-07-06
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a fixing device suitable for a gallows fatigue test relates to a gallows fatigue test's technical field. The fixing device comprises a connector externally connected with a fatigue testing machine, a booster which is connected to the other end of the connector in a threaded combination mode and is of a U-shaped structure, two groups of hoops which are connected to two end faces of the open side of the booster in a threaded combination mode, and a circular steel tube which is clamped by the two groups of hoops and used for penetrating through the supporting and hanging frame; each group of hoops are buckled by a fixed hoop and a movable hoop and fastened by bolts to form an integral clamping seat with a clamping circular hole at the center; the diameter of the clamping circular hole is matched with the outer diameter of the round steel pipe. Utilize the utility model discloses can fix a gallows steadily, and then the fatigue performance of an accurate survey gallows, improve a gallows fatigue test's the degree of accuracy and success rate greatly, can also satisfy the test demand of a gallows fatigue performance of different specifications, have fixed firm, pass the advantage that the power is stable, the test is accurate, easy dismounting, commonality are strong, application scope is wide.

Description

Fixing device suitable for support and hanger fatigue test

Technical Field

The utility model relates to a gallows fatigue test's technical field, more specifically say a fixing device suitable for a gallows fatigue test.

Background

The support and hanger is widely used in the fields of electromechanical circular steel tube systems, various air pipe systems, fire fighting, domestic water supply circular steel tube systems, gas systems and the like, and the fatigue performance of the support and hanger and the reliability of fatigue performance detection are related to the civil safety. At present, a common test device for testing fatigue performance of a support and hanger is a fixing device for simulating the fact that the support and hanger is actually fixed by utilizing a U-shaped screw rod, the screw rod is fixed on a circular steel tube through a nut, and the screw rod is deviated due to the fact that the nut is easy to loosen in a fatigue test, so that accurate test data are difficult to obtain, and finally test failure is caused. Therefore, it is necessary to design a fixing device capable of stably fixing the support and hanger and accurately measuring the fatigue performance of the support and hanger.

Disclosure of Invention

The utility model aims at providing a fixing device suitable for a gallows fatigue test just to the weak point that exists among the above-mentioned prior art. Utilize the utility model discloses can fix a gallows steadily, and then the fatigue performance of an accurate survey gallows, improve a gallows fatigue test's the degree of accuracy and success rate greatly, can also satisfy the test demand of a gallows fatigue performance of different specifications, have fixed firm, pass the advantage that the power is stable, the test is accurate, easy dismounting, commonality are strong, application scope is wide.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses a fixing device suitable for a gallows fatigue test includes the connector of external connection fatigue test machine (the connector is connected between fatigue test machine and booster, transmit the loading force), connect the connector other end through the screw thread bonding mode, the booster that is U style of calligraphy structure (the booster is connected between booster and staple bolt, transmit the loading force), connect two sets of staple bolts (be used for the centre gripping to hold tightly the circular steel tube, prevent the circular steel tube not hard up, and then stably fix a gallows, and stably evenly transmit the loading force, finally realize accurately measuring the fatigue performance of gallows, greatly improve the accuracy and the success rate of gallows fatigue test, have fixed firm, pass power stable, the test is accurate, easy dismounting's advantage), the end is held by two sets of staple bolts, be used for passing through the circular steel tube of gallows (the circular steel tube along with the staple bolt is moving together, stably transmitting the loading force to the tested support and hanger); each group of hoops are buckled by a fixed hoop and a movable hoop and are fastened by bolts to form an integral clamping seat with a clamping round hole at the center (the circular steel pipe is conveniently and quickly clamped and held, and the circular steel pipe is convenient to mount or dismount); the diameter of the clamping circular hole is matched with the outer diameter of the circular steel tube (on one hand, the circular steel tube is convenient to clamp and hold tightly, and the circular steel tube is prevented from loosening), on the other hand, the fatigue performance of the support and hanger frames of different specifications needs to be tested, only the corresponding matched circular steel tube and the hoop need to be replaced, and the clamping circular hole has the advantages of strong universality and wide application range.

The utility model discloses in the connector is processed into the stepped shaft structure of constituteing by ring flange section and cylinder section, has the bolt to wear to adorn the unthreaded hole (the bolt wears to adorn unthreaded hole and booster in I cooperation of screw thread through-hole on the flange seat, just links together connector and booster fast behind the construction bolt) at the marginal portion processing of ring flange section, has central screw thread blind hole (be used for outer fatigue testing machine that links along the axis processing of cylinder section.

In the utility model, the outer end face of the non-open side of the assistor is provided with a flange seat I, a threaded through hole I is processed on the flange seat I (the threaded through hole I is matched with a bolt penetrating and installing unthreaded hole on a flange plate section in the connector, and the connector and the assistor are quickly connected together after the bolt is installed); the open side both ends face of booster all is provided with flange seat II, all processes threaded through hole II on flange seat II (threaded through hole II with fixed staple bolt external screw thread blind hole cooperation in, just link together booster and staple bolt behind the construction bolt fast).

In the utility model, a plurality of combined threaded blind holes are arranged along the direction vertical to the combining surface after the fixed anchor ear and the movable anchor ear are buckled with each other (after the bolt is installed, the fixed anchor ear and the movable anchor ear can be quickly connected into a whole); and an external connection threaded blind hole which extends inwards from the outer end surface and is parallel to the combined threaded blind hole is formed in the fixed hoop (the threaded blind hole is matched with a threaded through hole II on a flange seat II in the assistor, and the assistor is quickly connected with the hoop after the bolt is installed).

The design principle of the utility model is as follows:

utilize the utility model discloses can fix a gallows steadily, and then the fatigue performance of an accurate survey gallows improves a gallows fatigue test's the degree of accuracy and success rate greatly. More specifically, the utility model discloses a connector that links to each other in proper order through the thread combination mode, the booster, the staple bolt comes the cyclic loading power that transmits fatigue testing machine step by step, because the gallows of being tested hangs the dress and fixes at the middle part of circular steel tube, and the both ends of circular steel tube inlay in the inlay card round hole of staple bolt respectively, can quick centre gripping and hold the circular steel tube tightly through two sets of staple bolts, prevent that the circular steel tube is not hard up, and then fix a gallows steadily, and transmit cyclic loading power steadily evenly, consequently, can accurately survey the fatigue performance of a gallows, improve a gallows fatigue testing's the degree of accuracy and success rate greatly, it is fixed firm, pass the power stability, the test is accurate, easy dismounting's advantage. And simultaneously, when needs utilize the utility model discloses when testing the fatigue performance of a gallows of different specifications, only need to change the test demand that corresponds a assorted circular steel tube and staple bolt can satisfy a gallows of different specifications, have the commonality strong, advantage that application scope is wide.

The utility model has the advantages of as follows:

utilize the utility model discloses can fix a gallows steadily, and then the fatigue performance of an accurate survey gallows, improve a gallows fatigue test's the degree of accuracy and success rate greatly, can also satisfy the test demand of a gallows fatigue performance of different specifications, have fixed firm, pass the advantage that the power is stable, the test is accurate, easy dismounting, commonality are strong, application scope is wide.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front view of the structure of the connector.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a front view of the structure of the assistor.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a front view of the structure of the hoop.

Fig. 7 is a top view of fig. 6.

The sequence numbers in the figures illustrate: 1. the fatigue testing machine comprises a fatigue testing machine body, a connector, 2-1 parts, a flange plate section, 2-1-1 parts, a bolt penetrating unthreaded hole, 2-2 parts, a cylindrical section, 2-2-1 parts and a central threaded blind hole; 3. 3-1 parts of a booster, 3-1 parts of flange bases I, 3-1-1 parts of threaded through holes I, 3-2 parts of flange bases II, 3-2-1 parts of threaded through holes II; 4. 4-1 parts of anchor ear, 4-1 parts of fixed anchor ear, 4-1-1 parts of external connection threaded blind hole, 4-2 parts of movable anchor ear, 4-3 parts of clamping and embedding round hole, 4-4 parts of combined threaded blind hole, 5 parts of supporting and hanging bracket, 6 parts of round steel pipe.

Detailed Description

The utility model discloses combine the figure to do further description:

as shown in fig. 1-7, the utility model discloses a fixing device suitable for prop up gallows fatigue test includes that connector 2 of outer fatigue test machine 1 connects between fatigue test machine 1 and booster 3, the transmission loading power), connect at the connector 2 other end through the screw thread bonding mode, booster 3 that is U style of calligraphy structure (booster 3 connects between booster 3 and staple bolt 4, the transmission loading power), connect two sets of staple bolts 4 (be used for the centre gripping to hold tightly circular steel tube 6 at booster 3 open side both ends face through the screw thread bonding mode, prevent that circular steel tube 6 is not hard up, and then fix a gallows 5 steadily, and transmit the loading power steadily evenly, finally realize accurately determining the fatigue performance of gallows, greatly improve the degree of accuracy and the success rate of prop up gallows fatigue test, it is firm to have fixed, pass power stably, the test is accurate, The advantage of convenient disassembly and assembly), the ends are clamped by the two groups of hoops 4 and are used for penetrating through the circular steel tubes 6 of the supporting and hanging bracket 5 (the circular steel tubes 6 stably transmit the loading force to the supporting and hanging bracket 5 to be tested while moving along with the hoops 4); each group of hoops 4 is formed by buckling a fixed hoop 4-1 and a movable hoop 4-2 and fastening the hoops by bolts to form an integral clamping seat with a clamping round hole 4-3 at the center (the round steel pipe 6 can be clamped and held fast and is convenient to install or disassemble); the diameter of the clamping circular hole 4-3 is matched with the outer diameter of the circular steel tube 6 (on one hand, the circular steel tube 6 is convenient to clamp and hold tightly, and the circular steel tube 6 is prevented from loosening, on the other hand, fatigue performance of support and hanger frames of different specifications needs to be tested, and only the circular steel tube 6 and the hoop 4 which are correspondingly matched need to be replaced, so that the clamping circular hole has the advantages of strong universality and wide application range.

The utility model discloses in connector 2 is processed into the step shaft structure of compriseing ring flange section 2-1 and cylinder section 2-2, and the marginal portion processing of ring flange section 2-1 has the bolt to wear dress unthreaded hole 2-1-1 (the bolt wears to adorn unthreaded hole 2-1-1 and booster 3 in the screw thread through-hole I3-1-1 cooperation on the flange seat I3-1, just links together connector 2 and booster 3 fast behind the construction bolt), and the axis processing along cylinder section 2-2 has central screw thread blind hole 2-2-1 (be used for outer fatigue testing machine 1 that links up).

In the utility model, the outer end face of the non-open side of the assistor 3 is provided with a flange seat I3-1, a threaded through hole I3-1-1 is processed on the flange seat I3-1 (the threaded through hole I3-1-1 is matched with a bolt penetrating unthreaded hole 2-1-1 on a flange plate section 2-1 in the connector 2, and the connector 2 and the assistor 3 are quickly connected together after the bolt is installed); the two end faces of the open side of the assistor 3 are respectively provided with a flange seat II 3-2, a threaded through hole II 3-2-1 is processed on each flange seat II 3-2 (the threaded through hole II 3-2-1 is matched with an externally-connected threaded blind hole 4-1-1 in a fixed hoop 4-1, and the assistor 3 is quickly connected with the hoop 4 after bolts are installed).

In the utility model, a plurality of combined type threaded blind holes 4-4 are arranged along the direction vertical to the joint surface after the fixed hoop 4-1 and the movable hoop 4-2 are buckled with each other (after the bolt is installed, the fixed hoop 4-1 and the movable hoop 4-2 can be quickly connected into a whole); and an external threaded blind hole 4-1-1 which extends inwards from the outer end surface and is parallel to the combined threaded blind hole 4-4 is formed in the fixed hoop 4-1 (the threaded blind hole 4-1-1 is matched with a threaded through hole II 3-2-1 on a flange seat II 3-2 in the assistor 3, and the assistor 3 is quickly connected with the hoop 4 after a bolt is installed).

The utility model discloses a concrete use as follows:

firstly, a round steel pipe 6 matched with the tested support and hanger 5 and an anchor ear 4 matched with the round steel pipe 6 are selected. Then, the present invention is assembled according to the above structure description, that is, the connector 2, the assistor 3, and the fixing hoop 4-1 are connected in sequence by the bolts to form a whole. Then, the connector 2 is connected with the fatigue testing machine 1, namely the output end of a power shaft in the fatigue testing machine 1 is screwed into a central threaded blind hole 2-2-1 of a cylindrical section 2-2 in the connector 2, and the connector 2 and the central threaded blind hole are combined into a whole through threads. And then, penetrating the circular steel tube 6 through the supporting and hanging frame 5 and fixing the supporting and hanging frame 5 in the middle of the circular steel tube 6 through a special circular steel tube connecting component. Then, the two ends of the circular steel tube 6 are respectively clamped in the semicircular holes of the two fixed hoops 4-1, and the movable hoops 4-2 are respectively buckled and screwed up, so that the enclosed clamping and embedding circular holes 4-3 are respectively clamped and tightly hold the two ends of the circular steel tube 6, the circular steel tube 6 is prevented from loosening, and the support hanger 5 is further stably fixed. And finally, setting parameters such as loading frequency, loading times, stress amplitude, stress mean value and the like of the fatigue test, starting the fatigue testing machine 1 to carry out cyclic loading, and sequentially driving the connector 2, the booster 3, the hoop 4, the circular steel tube 6 and the support and hanger 5 to linearly reciprocate so as to test the fatigue performance of the support and hanger 5. Because staple bolt 4 can the centre gripping hold tightly circular steel tube 6, prevents that circular steel tube 6 from becoming flexible, and then fixes a gallows 5 steadily and transmit the loading power steadily evenly, consequently can accurately survey a gallows's fatigue performance, improve a gallows fatigue test's the degree of accuracy and success rate greatly, have fixed firm, pass the advantage that power is stable, the test is accurate, easy dismounting.

Claims

1. The utility model provides a fixing device suitable for prop up gallows fatigue test which characterized in that: the fixing device comprises a connector (2) externally connected with the fatigue testing machine (1), a booster (3) which is connected to the other end of the connector (2) in a threaded combination mode and is of a U-shaped structure, two groups of hoops (4) which are connected to two end faces of the open side of the booster (3) in a threaded combination mode, and a circular steel tube (6) which is clamped by the two groups of hoops (4) and is used for penetrating through the supporting and hanging frame (5); each group of anchor ears (4) is an integral clamping seat with a clamping round hole (4-3) at the center, which is formed by buckling a fixed anchor ear (4-1) and a movable anchor ear (4-2) and fastening the anchor ears by bolts; the diameter of the clamping circular hole (4-3) is matched with the outer diameter of the round steel tube (6).

2. The fixing device for the fatigue test of the support and hanger as claimed in claim 1, wherein: the connector (2) is processed into a stepped shaft structure consisting of a flange plate section (2-1) and a cylindrical section (2-2), a bolt penetrating unthreaded hole (2-1-1) is processed at the edge part of the flange plate section (2-1), and a central threaded blind hole (2-2-1) is processed along the axis of the cylindrical section (2-2).

3. The fixing device for the fatigue test of the support and hanger as claimed in claim 1, wherein: a flange seat I (3-1) is arranged on the outer end face of the non-open side of the booster (3), and a threaded through hole I (3-1-1) is machined in the flange seat I (3-1); and two end faces of the open side of the assistor (3) are respectively provided with a flange seat II (3-2), and threaded through holes II (3-2-1) are respectively processed on the flange seats II (3-2).

4. The fixing device for the fatigue test of the support and hanger as claimed in claim 1, wherein: the fixed anchor ear (4-1) and the movable anchor ear (4-2) are buckled and then provided with a plurality of combined threaded blind holes (4-4) along the direction vertical to the joint surface; and the fixed hoop (4-1) is provided with an external connecting thread blind hole (4-1-1) which extends inwards from the outer end surface and is parallel to the combined thread blind hole (4-4).