CN215004240U

CN215004240U - Four-bar linkage test device used in cooperation with dynamic load test bed

Info

Publication number: CN215004240U
Application number: CN202121084293.8U
Authority: CN
Inventors: 李伟; 钱益; 朱胜利
Original assignee: Jiangsu Yongheng Earthquake Mitigation And Isolation Engineering Technology Research Institute Co Ltd
Current assignee: Jiangsu Yongheng Earthquake Mitigation And Isolation Engineering Technology Research Institute Co Ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-03
Anticipated expiration: 2031-05-20

Abstract

The utility model relates to a four-bar linkage test device used in cooperation with a dynamic load test bed, which comprises an adjustable tool and a four-bar linkage mechanism; the adjustable tool comprises a cross beam, a top plate, a middle connecting plate and a bottom plate which are sequentially distributed from top to bottom, the top plate is fixed on the lower surface of the cross beam, the middle connecting plate is connected with the bottom plate through a fastener, the distance between the middle connecting plate and the bottom plate can be adjusted, and the damper test piece is fixedly arranged between the top plate and the middle connecting plate; the four-bar linkage mechanism comprises two upright posts which are distributed in parallel at intervals, four connecting bars are fixed on the upper and lower parts of the upright posts, the four connecting bars on the upper part are connected in series through an upper fixed connecting seat and a pin shaft and are fixed on the lower surface of the cross beam by a fastener, and the four connecting bars on the lower part are connected in series through a lower fixed connecting seat and the pin shaft; two upper fixed connection seats are located on two sides of the top plate and are all in contact with the top plate, and two lower fixed connection seats are located on two sides of the bottom plate and are all in contact with the bottom plate. The test device is convenient to regulate and control, convenient to process, capable of reducing the installation period and saving expenses.

Description

Four-bar linkage test device used in cooperation with dynamic load test bed

Technical Field

The utility model belongs to the technical field of the antidetonation technique of building and specifically relates to a four-bar linkage test device that cooperation dynamic load test bench used.

Background

For the dynamic load test bed, what the tradition adopted is the flying frame mode, this flying frame mode is through last support, sliding bottom, unable adjustment base, guiding axle, round nut, parts such as attenuator test piece connecting seat and joint bearing constitute, connect through hexagon socket head cap screw and welded mode, go up the support and make up with sliding bottom, the guiding axle makes up with attenuator test piece connecting seat, all connect through unable adjustment base, merge with the joint bearing, joint bearing makes up with the terminal bearing of pneumatic cylinder, finally form one set of complete dynamic load test bed.

However, the structural defect of this flying frame mode lies in, because the size of tradition flying frame has been fixed, consequently when carrying out the experiment at every turn, need carry out frequent hoist and mount to different damper test pieces, constantly adjust the position and the height of tradition flying frame, need weld again to the damper test piece of changing, it is troublesome to change, and because the damper test piece is fixed with the aircraft frame through the welded mode, easily leave the interval, brought the uncertainty to experimental accuracy, also easily take place the cracked risk of welding point in the start motion process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the four-bar testing device matched with the dynamic load test bed is provided, and is flexible to adjust, convenient to replace, high in precision and strong in reliability.

The utility model provides a technical scheme that its technical problem adopted is: a four-bar linkage test device used in cooperation with a dynamic load test bed is composed of an adjustable tool and a four-bar linkage mechanism; the adjustable tool comprises a cross beam, a top plate, a middle connecting plate and a bottom plate which are sequentially distributed in parallel from top to bottom, the top plate is fixed on the lower surface of the cross beam through a fastener, the middle connecting plate is connected with the bottom plate through the fastener, the vertical distance between the middle connecting plate and the bottom plate can be adjusted, the purpose of adjusting the vertical distance between the top plate and the middle connecting plate is achieved, and the damper test piece is fixedly arranged between the top plate and the middle connecting plate; the four-bar linkage mechanism comprises two upright posts which are distributed in parallel at intervals, the upper part and the lower part of each upright post are respectively fixed with four connecting bars, the four connecting bars positioned above are connected in series through an upper fixed connecting seat and a pin shaft and are fixed on the lower surface of the cross beam by a fastener, and the four connecting bars positioned below are connected in series through a lower fixed connecting seat and the pin shaft; two upper fixed connection seats are located on two sides of the top plate and are all in contact with the top plate, and two lower fixed connection seats are located on two sides of the bottom plate and are all in contact with the bottom plate.

Further specifically, in the above technical solution, the upper surface of the damper test piece is fixed to the lower surface of the top plate by welding, and the lower surface of the damper test piece is fixed to the upper surface of the intermediate connection plate by welding.

Or through holes are formed in the top plate, the damper test piece and the middle connecting plate in a penetrating mode, and the screw rods are used for connecting the through holes in series, so that the purpose that the damper test piece is fixed between the top plate and the middle connecting plate is achieved.

Further specifically, according to the technical scheme, the cross beam is of an I-shaped section structure, the top plate is connected with the cross beam in series through bolts and is screwed and fixed on the lower surface of the cross beam through nuts, the two sides of the cross beam are fixedly connected with the top plate through a plurality of bolts and a plurality of nuts, and the nuts are screwed on the upper portion and the lower portion of each bolt.

Further specifically, according to the technical scheme, the middle connecting plate and the bottom plate are connected in series through the screw rods and screwed by the nuts, the two sides of the middle connecting plate are fixedly connected with the bottom plate through the screw rods and the nuts, the nuts are screwed on the corresponding screw rods, and the nuts are tightly attached to the upper surface of the bottom plate, the upper surface of the middle connecting plate and the lower surface of the middle connecting plate.

Further specifically, in the technical scheme, the upper fixed connection seat comprises an upper connection plate and five shaft installation seats which are uniformly arranged on the lower surface of the upper connection plate at intervals, a connecting rod is arranged between every two adjacent shaft installation seats, and the two sides of the upper connection plate are fixedly connected with the cross beam through a plurality of screw rods and a plurality of nuts.

The utility model has the advantages that: the utility model provides a pair of four-bar linkage test device that cooperation dynamic load test bench used, cooperation dynamic load test bench uses together, specifically has following advantage:

(1) simple structure, regulation are nimble: the height and the size of the damper test piece can be adjusted;

(2) simple processing and convenient replacement: the number of parts is small, and the installation process is very convenient;

(3) optimizing performance and eliminating gaps: the four-bar mechanism is adopted, and the force and displacement loading test is carried out on the damper test piece in an adjustable mode, so that the effects of optimizing performance and eliminating a gap generated by force are achieved;

(4) high precision, strong reliability: the four-bar mechanism flexibly moves and synchronously moves along with the movement of the damper test piece, so that the effects of improving the test precision and enhancing the reliability are achieved;

(5) the connection mode is simple, quick and effective: the connection can be completed only by a few simple parts, so that the connection mode is simpler, quicker and more effective;

(6) the service life is long, and the cost can be effectively controlled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural view of the adjustable tooling of the present invention;

FIG. 4 is a side view of FIG. 3;

fig. 5 is a schematic structural diagram of a four-bar linkage mechanism according to the present invention;

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a schematic view of the present invention used in conjunction with a dynamic load test bed;

fig. 8 is a top view of fig. 7.

The reference numbers in the figures are: A. an adjustable tool; B. a four-bar linkage; C. a damper test piece; D. a dynamic load test bed; 1. a cross beam; 2. a top plate; 3. an intermediate connection plate; 4. a base plate; 5. a lower fixed connecting seat; 6. a bolt; 7. a nut; 8. a screw; 9. a column; 10. a connecting rod; 11. an upper fixed connecting seat; 12. a pin shaft; 13. a hydraulic cylinder barrel; 14. a short beam; 15. a long beam; 16. a hydraulic cylinder piston rod; 17. a guide sleeve; 18. a connecting seat; 19. connecting the glasses plate; 20. a force sensor; 21. a slide bar; 22. and connecting the screw rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "one side", "the other side", "both sides", "between", "middle part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

See fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the four-bar testing apparatus for use with a dynamic load testing stand of the present invention is composed of an adjustable fixture a and a four-bar mechanism B.

Adjustable frock A includes from last down parallel distribution's crossbeam 1 in proper order, roof 2, intermediate junction plate 3 and bottom plate 4, roof 2 passes through the fastener and fixes the lower surface at crossbeam 1, be connected through the fastener between intermediate junction plate 3 and the bottom plate 4, and the upper and lower interval between adjustable intermediate junction plate 3 and the bottom plate 4 two, reach the purpose of adjusting the upper and lower interval between roof 2 and the intermediate junction plate 3 two promptly, attenuator test piece C is fixed to be put into between roof 2 and the intermediate junction plate 3 two, attenuator test piece C places wherein, carry out the regulation of height from top to bottom through nut 7, and then reach and satisfy and be suitable for any model, big or small metal damper test piece C's installation purpose.

The four-bar linkage mechanism B comprises two upright posts 9 which are distributed in parallel at intervals, the upper part and the lower part of each upright post 9 are respectively fixed with four connecting bars 10, the four connecting bars 10 positioned above are connected in series through an upper fixed connecting seat 11 and a pin shaft 12 and are fixed on the lower surface of the cross beam 1 by a fastener, and the four connecting bars 10 positioned below are connected in series through a lower fixed connecting seat 5 and a pin shaft 12; two upper fixed connection seats 11 are located on two sides of the top plate 2 and are all in contact with the top plate 2, and two lower fixed connection seats 5 are located on two sides of the bottom plate 4 and are all in contact with the bottom plate 4.

The upper surface of the damper test piece C is fixed to the lower surface of the top plate 2 by welding, and the lower surface of the damper test piece C is fixed to the upper surface of the intermediate connection plate 3 by welding. Welding is one of connection mode, and later stage only need cut off damper test piece C welding department can. Because the damper test piece C is basically a one-time test, after a complete set of test is finished, repeated tests can not be carried out, and if a new test is needed, a new set of damper test piece C needs to be processed again for testing.

Through holes are formed in the top plate 2, the damper test piece C and the intermediate connecting plate 3 in a penetrating mode, and the screw rods 8 are used for connecting the through holes in series to achieve the purpose that the damper test piece C is fixed between the top plate 2 and the intermediate connecting plate 3.

Crossbeam 1 is I-shaped section bar structure, and roof 2 concatenates crossbeam 1 through bolt 6 and utilizes nut 7 to screw and fix at the lower surface of crossbeam 1, and the both sides of crossbeam 1 all realize through a plurality of bolts 6 and a plurality of nut 7 with roof 2's fixed connection, and the upper portion and the lower part of bolt 6 all close nut 7 soon.

Concatenate through screw rod 8 between intermediate junction plate 3 and the bottom plate 4 and utilize nut 7 to screw, intermediate junction plate 3's both sides all realize through a plurality of screw rods 8 and a plurality of nut 7 with bottom plate 4's fixed connection, nut 7 closes soon on the screw rod 8 that corresponds, and the upper surface of bottom plate 4, intermediate junction plate 3's upper surface and intermediate junction plate 3's lower surface all paste tightly there is nut 7.

Go up the fixed connection seat 11 and include the upper junction plate and evenly the interval sets up five axle mount pads on upper junction plate lower surface, has a connecting rod 10 between every two adjacent axle mount pads, and the both sides of upper junction plate all realize through a plurality of screws 8 and a plurality of nut 7 with crossbeam 1's fixed connection.

It should be noted that: the four-bar linkage test device matched with the dynamic load test bed can change the size and the material of the adjustable tool A according to the requirement and can change the size and the material of the four-bar linkage mechanism B according to the requirement. Specifically, the size, shape, number and material of the cross beam 1 can be changed as required, the size, shape, number and material of the upright posts 9 can be changed as required, the size, shape, number and material of the fixed connection seats can be changed as required, the size, shape, number and material of the top plate 2 can be changed as required, the size, shape, number and material of the intermediate connection plate 3 can be changed as required, and the size, shape, number and material of the bottom plate 4 can be changed as required. The material can be a metal material commonly found in the market, such as 235, Q345 or 45# and the like.

The screw 8 can be replaced by a substitute with the same effect according to actual requirements. Threaded holes and through holes with different numbers and sizes can be formed in the cross beam 1, the top plate 2, the middle connecting plate 3 and the bottom plate 4 according to actual requirements.

Referring to fig. 7 and 8, the dynamic load test bed D comprises a rectangular frame structure, the upper part of the rectangular frame structure is formed by assembling two short beams 14 and two long beams 15, the end part of the rectangular frame structure is provided with a hydraulic cylinder 13, the hydraulic cylinder 13 and the long beams 15 are distributed in parallel, a hydraulic cylinder piston rod 16 is inserted in the cylinder body of the hydraulic cylinder 13, two sides of the rectangular frame structure are symmetrically provided with guide grooves, each guide groove is internally provided with a guide sleeve 17, a slide rod 21 is arranged between the two guide sleeves 17, the slide rod 21 and the short beams 14 are distributed in parallel, the extending end of the hydraulic cylinder piston rod 16 is fixedly connected with the middle part of the slide rod 21, the middle part of the slide rod 21 is provided with a connecting seat 18, one end of the four-bar test device of the invention is provided with a force sensor 20 through a connecting screw 22, the end part of the force sensor 20 is provided with a connecting seat 18, and the two connecting seats 18 are distributed oppositely, the two connecting seats 18 are connected in series through a connecting glasses plate 19 and the pin 12.

Four-bar linkage B cooperates with adjustable frock A, and roof 2 and last fixed connection seat 11 take place the contact, and bottom plate 4 and lower fixed connection seat 5 take place the contact, reach the effect in removal in-process clearance elimination. Because the connection mode is through the bolt 6 connection, namely the roof 2 and the test piece C upper junction plate contact department of the damper, and the middle joint bar 3 and test piece C lower junction plate department of the damper do not need to connect through the welded mode, so has dispelled the influence of the interval that the welding seam brings; in addition, the top plate 2 and the bottom plate 4 are connected through the bolts 6, so that the influences of uneven welding seams, low strength and easy strain and damage caused by welding connection in the prior art are avoided.

The force loading test is carried out by displacement, and the displacement is carried out by inputting a displacement command value through a controller. The optimization of the four-bar linkage mechanism B mainly aims at replacing a tool, adjusting the height and abandoning the previous welding mode, the welding position is easy to cause uneven welding seams and different welding strength, after the displacement controller gives a command to start up, the welding seams are inevitably damaged due to continuous loading of force, so that the welding seams are not only torn, but also can be formed by welding the test piece, and in the moving process, the welding seams are damaged to cause gaps, thereby influencing the precision of displacement and force.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a four-bar linkage test device that cooperation dynamic load test bench used which characterized in that: the device is composed of an adjustable tool (A) and a four-bar mechanism (B); the adjustable tool (A) comprises a cross beam (1), a top plate (2), an intermediate connecting plate (3) and a bottom plate (4) which are sequentially distributed in parallel from top to bottom, the top plate (2) is fixed on the lower surface of the cross beam (1) through a fastener, the intermediate connecting plate (3) is connected with the bottom plate (4) through the fastener, the vertical distance between the intermediate connecting plate (3) and the bottom plate (4) can be adjusted, namely the vertical distance between the top plate (2) and the intermediate connecting plate (3) can be adjusted, and a damper test piece (C) is fixedly arranged between the top plate (2) and the intermediate connecting plate (3); the four-bar linkage mechanism (B) comprises two upright posts (9) which are distributed at intervals in parallel, the upper part and the lower part of each upright post (9) are respectively fixed with four connecting bars (10), the four connecting bars (10) positioned above are connected in series through an upper fixed connecting seat (11) and a pin shaft (12) and are fixed on the lower surface of the cross beam (1) by using a fastener, and the four connecting bars (10) positioned below are connected in series through a lower fixed connecting seat (5) and the pin shaft (12); two upper fixed connection seats (11) are positioned on two sides of the top plate (2) and are all contacted with the top plate (2), and two lower fixed connection seats (5) are positioned on two sides of the bottom plate (4) and are all contacted with the bottom plate (4).

2. The four-bar linkage test device used with a dynamic load test bed according to claim 1, wherein: the upper surface of the damper test piece (C) is fixed on the lower surface of the top plate (2) in a welding mode, and the lower surface of the damper test piece (C) is fixed on the upper surface of the middle connecting plate (3) in a welding mode.

3. The four-bar linkage test device used with a dynamic load test bed according to claim 1, wherein: through holes are formed in the top plate (2), the damper test piece (C) and the intermediate connecting plate (3) in a penetrating mode, and the screw rods (8) are used for connecting the through holes in series to achieve the purpose that the damper test piece (C) is fixed between the top plate (2) and the intermediate connecting plate (3).

4. The four-bar linkage test device used with a dynamic load test bed according to claim 1, wherein: crossbeam (1) is I shape section bar structure, roof (2) concatenate crossbeam (1) through bolt (6) and utilize nut (7) to screw and fix the lower surface at crossbeam (1), the both sides of crossbeam (1) all realize through a plurality of bolts (6) and a plurality of nut (7) with the fixed connection of roof (2), the upper portion and the lower part of bolt (6) all close nut (7) soon.

5. The four-bar linkage test device used with a dynamic load test bed according to claim 1, wherein: the connecting structure is characterized in that the middle connecting plate (3) and the bottom plate (4) are connected in series through the screw rods (8) and screwed by the nuts (7), the two sides of the middle connecting plate (3) are fixedly connected with the bottom plate (4) through the screw rods (8) and the nuts (7), the nuts (7) are screwed on the corresponding screw rods (8), and the nuts (7) are tightly attached to the upper surface of the bottom plate (4), the upper surface of the middle connecting plate (3) and the lower surface of the middle connecting plate (3).

6. The four-bar linkage test device used with a dynamic load test bed according to claim 1, wherein: go up fixed connection seat (11) and include the upper junction plate and evenly the interval sets up five axle mount pads at the upper junction plate lower surface, have a connecting rod (10) between every two adjacent axle mount pads, the both sides of upper junction plate all realize through a plurality of screws (8) and a plurality of nut (7) with the fixed connection of crossbeam (1).