CN104751704B - A kind of multifunctional assembled structural mechanics experimental stand - Google Patents

Abstract

The invention discloses a kind of multifunctional assembled structural mechanics experimental stand, bridge structure including experimental framework and load maintainer and experiment to be measured, the bridge structure is located on experimental framework, the experimental framework is provided with crossbeam, the load maintainer is movably located on crossbeam, and the load maintainer is acted in bridge structure by pressure head.Overall static and dynamic mechanical test can be carried out to physical model to test, overall performance progress test assessment that can be to structure is vdiverse in function, can not only motivate students' interest in learning, also can exercise student ' manipulative ability.

Description

A Combined Multifunctional Structural Mechanics Experiment Bench

technical field

The invention relates to the technical field of mechanical experiments, in particular to a combined multifunctional structural mechanics experimental bench.

Background technique

At present, most of the existing mechanical test benches for truss and rigid frame structures are for static experiments on the structure, and cannot be used for dynamic experiments. The experimental functions are single, and there is a lack of methods and means for testing and evaluating the overall performance of the structure.

Moreover, the existing mechanical experiment bench has simple structure, poor composability, too simple mechanical model, lack of transformation, and single structure and function, which cannot stimulate students' interest in learning and hands-on ability.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a combined multi-functional structural mechanics test bench, so as to achieve the purpose of performing static test and dynamic test separately.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

The combined multifunctional structural mechanics test bench includes an experimental frame, a loading mechanism and a rod frame structure for the experiment to be tested. It is movably arranged on the beam, and the loading mechanism acts on the rod frame structure through the pressure head.

Further, the loading mechanism is arranged on the beam through the slider, and the beam is a threaded screw threaded with the slider, and one end of the screw is provided with a moving hand wheel.

The loading mechanism includes a screw rod, a loading handle, and a dynamometer. The loading handle is set at the top of the screw rod, the dynamometer is set at the lower end of the screw rod, and the pressure head is set at the lower part of the dynamometer.

Rollers are provided at the contact end of the pressure head and the rod frame structure.

The experimental frame includes an experimental side frame and a movable frame, the upper end of the movable frame is connected with the beam, and the lower end of the movable frame is connected with the bottom of the experimental side frame.

The rod frame structure includes rods and connecting joints. Both ends of the rod are provided with connecting holes. The connecting joints are provided with a set of protruding connecting heads. hole.

The loading mechanism also includes a vibration exciter, which is arranged under the rod frame structure and fixed on the bottom of the experimental side frame.

Both the side frame and the movable frame of the experimental frame are provided with mounting holes for fixing the rod frame structure.

There are two connecting holes at one end of the rod, and each connecting head is provided with two holes matching the two connecting holes at one end.

Two or three or four or five or six or eight branch connecting heads are arranged on the connecting joint.

Compared with the prior art, the present invention has the following advantages:

A variety of truss structures, rigid frame structures and composite structures can be combined with rods and joints, and various solid models can be established, and overall static and dynamic mechanical testing experiments can be performed on the solid model to test and evaluate the overall performance of the structure ; The combination is easy to operate and has various functions, which can not only stimulate students' interest in learning, but also exercise students' hands-on ability.

Description of drawings

The following is a brief description of the content expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is a schematic diagram of the overall structure of the mechanical experiment bench of the present invention.

Fig. 2 is a schematic diagram of the structure of the indenter of the present invention.

Fig. 3 is a schematic diagram of the structure of the bar of the present invention.

Fig. 4 is a first schematic diagram of the connection joint structure of the present invention.

Fig. 5 is a second schematic diagram of the connection joint structure of the present invention.

Fig. 6 is a third schematic diagram of the connection joint structure of the present invention.

Fig. 7 is a fourth schematic diagram of the connection joint structure of the present invention.

Fig. 8 is a fifth schematic diagram of the connection joint structure of the present invention.

Fig. 9 is a sixth schematic diagram of the connection joint structure of the present invention.

Fig. 10 is a schematic diagram of the connection joint structure VII of the present invention.

Fig. 11 is the eighth schematic diagram of the connection joint structure of the present invention.

Fig. 12 is a first schematic diagram of the pole frame structure of the present invention.

Fig. 13 is a mechanical schematic diagram of Fig. 12 .

Fig. 14 is a second schematic diagram of the structure of the pole frame of the present invention.

Fig. 15 is a third schematic diagram of the pole frame structure of the present invention.

In the figure: 1. Rod, 2. Experimental side frame, 3. Movable frame, 4. Beam, 5. Reserved installation hole, 6. Structural support, 7. Connection joint, 8. Loading hand wheel, 9. Screw rod, 10. slider, 11. screw rod, 12. dynamometer, 13. pressure head, 14. exciter, 15. fixed support, 16. mobile handwheel, 17. roller.

detailed description

The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

As shown in Figures 1 to 15, the combined multifunctional structural mechanics test bench includes an experimental frame, a loading mechanism, and a rod frame structure for the test to be tested, wherein the experimental frame includes an experimental side frame 2 and a movable frame 3, The experimental side frame 2 is a frame with an upper opening, which is composed of a bottom frame and two side frames. A crossbeam 4 and a crossbar are arranged at the upper opening of the experimental sideframe. The crossbeam 4 is arranged side by side above the crossbar. Set on the top of the two side frames of the experimental side frame, the two ends of the cross bar are fixed on the top of the two side frames of the experimental side frame; the movable frame 3 is set in the experimental side frame, the movable frame 3 is a vertical bar, and the top of the movable Set on the beam, the bottom of the movable frame is set in the chute on the bottom of the experimental frame, the top of the movable frame is fixed on the cross bar by fastening screws, and the bottom of the movable frame is fixed on the bottom of the experimental frame by fastening screws bottom.

Both the experimental side frame 2 and the movable frame 3 are equipped with mounting holes for fixing the rod frame structure, and the ends of the rod frame structure are fixed on the mounting holes through the structural support 6; both the experimental side frame and the movable frame are provided with Mounting holes 5 are reserved to facilitate the adjustment of the mounting height of the pole frame structure. The movable frame can move laterally in the experimental side frame, and the movable frame can move laterally in the experimental side frame by loosening the fastening screws, which is suitable for rod frame structures of different sizes and specifications.

The loading mechanism includes a manual loading mechanism. The manual loading mechanism includes a slide block 10, a screw rod 9, a loading handle 8, and a dynamometer 12. The light hole, the cross bar passes through the light hole, the slider 10 is arranged on the screw rod, the slider is sleeved on the cross bar, and one end of the screw rod is provided with a moving hand wheel 16, which rotates and moves the hand wheel to drive the screw rod to rotate, thereby driving The slider moves laterally along the axis of the crossbar.

The slider is provided with a threaded hole in the vertical direction, the screw rod passes through the threaded hole, a loading handwheel 8 is provided at the top of the screw rod, a force measuring instrument 12 is provided at the bottom end of the screw rod, and the pressure head 13 is located at the lower part of the force measuring instrument , the loading mechanism acts on the rod frame structure through the pressure head; by rotating the loading hand wheel, the screw rod is driven to move vertically, and pressure is applied to the rod frame structure.

Roller 17 is provided at the contact end of the indenter 13 and the rod frame structure. The beam is a screw rod adapted to the slider. By rotating the hand wheel, the slider moves along the axial direction of the beam. Structurally moving and moving loading can be used for dynamic test; when not moving, static test can be carried out.

Both the manual loading mechanism and the beam are located above the rod frame structure of the experiment to be tested; the loading mechanism also includes a vibration exciter 14, which is located below the rod frame structure, and the vibration exciter 14 is fixed on the bottom of the experimental side frame through a fixed support 15 , the rod frame structure can optionally be loaded via the vibrator located below.

The rod frame structure includes a rod member 1 and a connecting joint 7, wherein the rod member 1 is a straight rod, two connecting holes are provided at both ends of the rod member 1, and a group of protruding connecting heads are arranged on the connecting joint 7, and the connecting head A hole matching the connecting hole on the bar is provided on the top.

A connection head in each direction is provided with two holes matching the two connection holes at one end; when the two connection holes at one end of the rod 1 and the two holes in one direction of the connection joint are connected by bolts, it becomes a rigid connection; When one end of the rod is connected with a hole in one direction of the joint through a bolt, it becomes a hinge. The rods and connecting joints can be connected into different forms of rod frame structures according to the experimental requirements.

The connecting joint is provided with two or three or four or five or six or eight branch connecting heads. Wherein, the connector of two branches is provided on the connection joint, and the connectors of the two branches are at right angles; or, the connector of three branches is provided on the connection joint, the connectors of the two outer branches are at right angles, and the connectors of the other branch are at right angles. The connector is located in the middle of the connectors of the two outer branches; or, the connector is provided with three connectors, and the three connectors are located on the same side of the connector body, and the angles between adjacent connectors on this side are all 90° ; Or, the connecting joint is provided with four branched connecting heads, and the four branched connecting heads are in a cross structure; or, the connecting joint is provided with four branched connecting heads, and the connecting heads of the four branches are located on the same side of the connecting joint body. side, the angles between the adjacent connectors on this side are all 60°; or, five connectors are arranged on the connector 7, and the five connectors are located on the same side of the connector body, and the adjacent connectors on this side The angles between the connecting heads are all 45°; or, the connecting joint is provided with six connecting heads, and the angles between the adjacent branch connecting heads are all 60°; or, the connecting joint is provided with eight branched connecting heads , the angle between adjacent branch joints is 45°; or, the joints are straight rods, and two holes for connecting with rods are provided at both ends of the straight rods. Different connection joints can be selected and used according to different pole frame structures, which is convenient for assembly.

A variety of truss structures, rigid frame structures and composite structures can be combined with rods and joints, and various solid models can be established, and overall static and dynamic mechanical testing experiments can be performed on the solid model to test and evaluate the overall performance of the structure .

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are made using the concept and technical solutions of the present invention, or the present invention will be If the concept and technical solutions of the present invention are directly applied to other occasions, they all fall within the protection scope of the present invention.

Claims (6)

1. a kind of multifunctional assembled structural mechanics experimental stand, including experimental framework and load maintainer and the bar of experiment to be measured Frame structure, the bridge structure is located on experimental framework, it is characterised in that：The experimental framework is provided with crossbeam, the loading Mechanism is movably located on crossbeam, and the load maintainer is acted in bridge structure by pressure head；The experimental framework includes Frame and removable frame are tested, the removable frame upper end is connected with crossbeam, the removable frame lower end and experiment Frame bottom is connected；The load maintainer is located on crossbeam by sliding block, and the crossbeam is the screw mandrel coordinated with sliding block screw thread, Described screw mandrel one end is provided with mobile handwheel；The load maintainer includes screw rod, charging handle, dynamometer, the charging handle Screw tip is located at, the dynamometer is located at screw rod lower end, and pressure head is located at dynamometer bottom；The pressure head connects with bridge structure Contravention is provided with roller.

2. multifunctional assembled structural mechanics experimental stand as claimed in claim 1, it is characterised in that：The bridge structure includes Rod member and connecting joint, the rod member two ends are equipped with connecting hole, and the connecting joint connects provided with one group of raised connector Joint is provided with the hole being adapted with connecting hole on rod member.

3. multifunctional assembled structural mechanics experimental stand as claimed in claim 1, it is characterised in that：The load maintainer is also wrapped Vibrator is included, the vibrator is located at below bridge structure and is fixed on the bottom of experiment frame.

4. multifunctional assembled structural mechanics experimental stand as claimed in claim 1, it is characterised in that：The experiment frame The mounting hole for fixed rod frame structure is equipped with side frame and removable frame.

5. multifunctional assembled structural mechanics experimental stand as claimed in claim 2, it is characterised in that：The company of described rod member one end It is two to connect hole, and each connector is provided with two holes being adapted with the connecting hole of one end two.

6. multifunctional assembled structural mechanics experimental stand as claimed in claim 2, it is characterised in that：Set on the connecting joint There is the connector of two or three or four or five or six Ge Huobage branches.