CN219121874U

CN219121874U - Vertical pressure loading system based on lever principle

Info

Publication number: CN219121874U
Application number: CN202223336491.6U
Authority: CN
Inventors: 何庆锋; 孙敬明; 周凯鹏; 易伟建; 蒋进
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-02
Anticipated expiration: 2032-12-14

Abstract

The application discloses vertical pressure loading system based on lever principle, including lever, fixed bolster, adjustable counter weight device, hinged support, pressure conduction spare, support frame and horizontal restraint spare, the one end of lever articulates in the fixed bolster, and the other end suspension adjustable counter weight device, and pressure conduction spare passes through the hinged support to be set up in the lever bottom, and the support frame sets up in pressure conduction spare below, and horizontal restraint spare sets firmly on the support frame. The beneficial effects of the application are that: the lever principle is adopted to apply axial pressure to the vertical component, so that the upper constant axial pressure born by the vertical component can be simulated, the upper axial pressure of the vertical component after deformation under the action of load such as horizontal impact is ensured to be kept constant all the time, and the inertial force generated by the vertical mass on the upper part of the vertical component in the stress process can be considered, therefore, the force-bearing device is more consistent with the stress condition of the vertical component in the actual engineering, and the actual stress and boundary condition of the vertical component can be simulated more truly.

Description

Vertical pressure loading system based on lever principle

Technical Field

The application belongs to the technical field of impact resistance research of a pressed structural column and a shear wall, and particularly relates to a vertical pressure loading system based on a lever principle.

Background

The vertical bearing capacity structural member in the engineering structure is mainly widely applied to building structures and bridge structures, and has the main function of bearing vertical axial loads. But may be subjected to extreme loads such as an accidental impact during service (e.g., overweight vehicles, large vessels, and falling rocks in mountainous areas). The pendulum bob experimental device can be used for researching the impact resistance of the vertical bearing member.

The existing pendulum test device mostly adopts a rigid tie rod, and the mass of the rigid tie rod should be counted in the impact process, so that the impact mass is difficult to determine in the impact process. The impact direction of the rigid tie rod is relatively fixed, and the flexible steel cable can keep the horizontality of the impact direction. For a simulated vehicle, the ship or falling rock impacts the pier stud much closer to an actual engineering accident.

The existing method for applying axial pressure in the impact test of the vertical bearing capacity component mostly adopts a jack and a belleville spring. However, the test method is used for researching the dynamic mechanical property and damage of the evaluation structure which can be too high for bearing the dynamic mechanical property of the vertical load component under the horizontal impact load. This is because both of these methods cause the axial rigidity of the upper structure of the vertical member to be too great to reasonably estimate the shock resistance of the vertical member, and the hydraulic jack causes a power response to be delayed from the response of the actual axial force of the vertical member due to the problem of oil pressure. The belleville springs are also difficult to accurately simulate the inertial effect of the upper load of the vertical member, so that the test result cannot accurately reflect the change of the actual axial force on the vertical member.

There is therefore a need for a new lever principle based vertical pressure loading system for vertical pressure loading of vertical components.

Disclosure of Invention

An object of the embodiments of the present application is to provide a vertical pressure loading system based on the lever principle, which can solve the technical problems involved in the background technology.

In order to solve the technical problems, the application is realized as follows:

the utility model provides a vertical pressure loading system based on lever principle, includes lever, fixed bolster, adjustable counter weight device, hinge support, pressure conduction spare, support frame and lateral constraint spare, the one end of lever articulated in the fixed bolster and can wind the fixed bolster rotates from top to bottom, adjustable weight device hang in the other end of lever, pressure conduction spare pass through the hinge support set up in the lever bottom, the support frame set up in pressure conduction spare below, lateral constraint spare set firmly in order to be used for restricting the lateral displacement of waiting the vertical component of pressurization on the support frame.

As a preferred refinement of the utility model, the lever comprises a first connection point to the adjustable weighing device and a second connection point to the fixed support, the hinge support being spaced from the first connection point by a greater distance than the second connection point.

As a preferred refinement of the utility model, the distance of the hinge support from the first connection point is 5 to 10 times the distance of the hinge support from the second connection point.

As a preferred improvement of the utility model, the adjustable weighing device comprises a hanging basket, a balancing weight accommodated in the hanging basket and a hanging rope for suspending the hanging basket at the first connecting point.

As a preferred development of the utility model, the lever principle based vertical pressure loading system further comprises a stand, to which the fixed support and the support frame are both fixed.

As a preferable improvement of the utility model, the transverse restraint piece comprises a clamping plate arranged around the periphery of the vertical member to be pressurized, a pull rod with one end fixedly connected with the clamping plate and the other end fixedly connected with the stand, and a bottom plate fixedly arranged on the support frame, and the bottom end of the clamping plate is arranged on the bottom plate.

As a preferred development of the utility model, the fixing support and the support frame are both fastened to the stand by means of bolts.

As a preferred development of the utility model, the base plate is fastened to the support frame by means of bolts.

As a preferred improvement of the utility model, the vertical member to be pressurized is an engineering structural column or a shear wall.

As a preferred development of the utility model, a polytetrafluoroethylene plate is arranged between the clamping plate and the vertical component to be pressurized.

The beneficial effects of this application lie in: the method can simulate the upper constant axial pressure born by the vertical member, can ensure that the upper axial pressure of the vertical member after deformation under the action of load such as horizontal impact is always kept constant, and can also take the inertia force generated by the vertical mass on the upper part of the vertical member in the stress process into consideration. Therefore, the system can be more matched with the stress condition of the vertical member in the actual engineering, and can simulate the actual stress and boundary condition of the vertical member more truly.

Drawings

Fig. 1 is a schematic structural diagram of a vertical pressure loading system based on the lever principle according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a basket and a counterweight according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a lateral restraint provided in an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The following describes a vertical pressure loading system based on the lever principle provided in the embodiment of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1, a vertical pressure loading system based on the lever principle according to the embodiment of the present application includes a lever 1, a fixed support 2, an adjustable weight device 3, a hinged support 4, a pressure conducting member 5, a supporting frame 6, a lateral restraint member 7, and a stand 8, wherein one end of the lever 1 is hinged to the fixed support 2 and can rotate up and down around the fixed support 2. The fixed support 2 is fixed on the vertical frame 8 through bolts 10.

The lever 1 comprises a first connection point 11 connected with the adjustable weight means 3 and a second connection point 12 connected with the fixed support 2, the hinge support 4 being at a greater distance from the first connection point 11 than from the second connection point 12.

In some embodiments, the distance of the hinge support 4 to the first connection point 11 is 5 to 10 times the distance of the hinge support 4 to the second connection point 12, so that a force can be applied by the lever principle.

The adjustable weight device 3 is suspended at the other end of the lever 1.

Referring to fig. 2, the adjustable weight-adjusting device 3 includes a hanging basket 31, a balancing weight 32 accommodated in the hanging basket 31, and a hanging rope 33 suspending the hanging basket 31 at the first connection point 11, and the weight of the adjustable weight-adjusting device 3 can be adjusted by increasing or decreasing the number of the balancing weights 32, so as to realize weight adjustment.

In some embodiments, the weight 32 is a weight and the lifting rope 33 is a wire rope.

The pressure conductor 5 is arranged at the bottom of the lever 1 through the hinge support 4.

The supporting frame 6 is arranged below the pressure conducting piece 5. The supporting frame 6 is fixed on the vertical frame 8 through bolts 10.

The transverse restraint 7 is fixedly arranged on the support frame 6 and is used for restraining the transverse displacement of the vertical member 9 to be pressurized.

In some embodiments, the vertical member 9 to be pressurized is a structural column or a shear wall.

Referring to fig. 3 again, the lateral restraint 7 includes a clamping plate 71 surrounding the periphery of the vertical member 9 to be pressurized, a pull rod 72 with one end fixedly connected with the clamping plate 71 and the other fixedly connected with the stand 8, and a bottom plate 73 fixedly arranged on the support frame 6, and the bottom end of the clamping plate 71 is arranged on the bottom plate 73.

Upper restraint is provided to the vertical member 9 to be pressurized by the lateral restraint 7. The action of said tie-rods 72 mainly provides the horizontal rigidity of the clamping plate 71, ensuring the constraint of the upper part of the vertical member 9 to be pressurized.

The bottom plate 73 is fixed to the support frame 6 by bolts 10.

A teflon plate (not shown) is provided between the clamping plate 73 and the vertical member 9 to be pressurized, so that friction between the clamping plate 71 and the vertical member 9 to be pressurized can be reduced.

The beneficial effects of this application lie in: the method can simulate the upper constant axial pressure born by the vertical component, can ensure that the upper axial pressure of the vertical component after deformation under the action of load such as horizontal impact is always kept constant, and can also consider the inertial force generated by the vertical mass on the upper part of the vertical component in the stress process, so that the system can be more matched with the stress condition of the vertical component in the actual engineering, and can simulate the actual stress and boundary condition of the vertical component more truly.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The utility model provides a vertical pressure loading system based on lever principle, its characterized in that includes lever, fixed bolster, adjustable counter weight device, hinged support, pressure conduction spare, support frame and horizontal restraint piece, the one end of lever articulated in the fixed bolster and can wind the fixed bolster rotates from top to bottom, adjustable proportioning device hang in the other end of lever, pressure conduction spare passes through hinged support set up in the lever bottom, the support frame set up in pressure conduction spare below, horizontal restraint piece set firmly in order to be used for restricting the lateral displacement of waiting the vertical component of pressurization on the support frame.

2. A vertical pressure loading system based on the principle of leverage according to claim 1, characterized in that the lever comprises a first connection point to the adjustable weight means and a second connection point to the fixed support, the hinge support being at a greater distance from the first connection point than from the second connection point.

3. A vertical pressure loading system based on the principle of leverage according to claim 2, characterized in that the distance of the hinge support to the first connection point is 5 to 10 times the distance of the hinge support to the second connection point.

4. A vertical pressure loading system based on the principle of leverage according to claim 2, characterized in that the adjustable weighing means comprise a basket, a counterweight received in the basket and a lifting rope suspending the basket at the first connection point.

5. The lever principle based vertical pressure loading system according to claim 1, further comprising a stand, wherein the fixed support and the support frame are both fixed to the stand.

6. The lever principle-based vertical pressure loading system according to claim 5, wherein the lateral constraint member comprises a clamping plate arranged around the circumference of the vertical member to be pressurized, a pull rod with one end fixedly connected with the clamping plate and the other end fixedly connected with the vertical frame, and a bottom plate fixedly arranged on the supporting frame, and the bottom end of the clamping plate is arranged on the bottom plate.

7. The lever principle based vertical pressure loading system according to claim 5, wherein the fixed support and the supporting frame are both fixed to the stand by bolts.

8. The lever principle based vertical pressure loading system according to claim 6, wherein the bottom plate is fixed to the support frame by bolts.

9. The lever principle based vertical pressure loading system according to claim 1, wherein the vertical member to be pressurized is an engineering structural column or a shear wall.

10. The lever principle based vertical pressure loading system according to claim 6, wherein a polytetrafluoroethylene plate is provided between the clamping plate and the vertical member to be pressurized.