CN220854076U - Stiffness test device - Google Patents

Abstract

The utility model discloses a stiffness testing device, which is used to detect the stiffness of a bracket on a vehicle, and includes: a first clamping member; a second clamping member, which is arranged relative to the first clamping member; a driving member, which is used to drive the first clamping member and the second clamping member to move closer to or farther from each other; a detection member, which is arranged on the first clamping member and the second clamping member to obtain the stiffness of the bracket under the action of the first clamping member and the second clamping member; and an indicator, which is used to indicate the stiffness information obtained by the detection member. The utility model has a simple structure, is conducive to miniaturization, is convenient for operators to hold and operate, is simple to operate, can reduce costs, and improve detection efficiency.

Description

Stiffness test device

Technical Field

The utility model relates to the technical field of vehicle manufacturing, in particular to a rigidity testing device.

Background technique

In the process of vehicle design, bolt connection is usually used to connect different parts together. Bolt connection is widely used in the design and production of vehicle chassis. When two parts need to be connected by bolts, one part is usually designed to be open, with bolt holes reserved on the two brackets of the opening, and a through hole reserved in the middle of the other part. The bolts pass through the outer open brackets and the holes of the parts to be connected at the same time, and the two parts are fixed by tightening the bolts.

Under the design state, the middle opening size of the open part needs to be greater than or equal to the external size of the connected part, and the gap is generally maintained at 0-0.5mm. During the bolt tightening process, the external bracket needs to be compressed and deformed to fit the internal bracket under the action of the bolt preload. In this process, the bolt tightening needs to overcome the reaction force of the deformation of the outer bracket. During the design of the external bracket, the clamping stiffness of the bracket will affect the connection between the two parts. If the clamping stiffness is too large, the bolt preload cannot cause sufficient deformation of the outer bracket, resulting in a loose connection between the two parts.

Therefore, it is necessary to measure the clamping stiffness of the outer bracket during the vehicle design process. However, the conventional mounting bracket stiffness test requires the design of special tooling, which is measured on a bench using special press equipment and displacement reading equipment. In addition, the tooling needs to be designed according to the different shapes of components, which results in a large workload, long testing cycle, and high cost.

Utility Model Content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a stiffness testing device, which has a simple structure and is easy to use, and can effectively solve the problem of using special equipment to measure the stiffness of the bracket in the vehicle, resulting in high cost and inconvenience in testing.

According to the stiffness testing device of the embodiment of the utility model, the stiffness testing device is used to detect the stiffness of the bracket on the vehicle, and the stiffness testing device includes: a first clamping member; a second clamping member, the second clamping member and the first clamping member are arranged opposite to each other; a driving member, the driving member is used to drive the first clamping member and the second clamping member to move closer to or away from each other; a detecting member, the detecting member is arranged on the first clamping member and the second clamping member to obtain the stiffness of the bracket under the action of the first clamping member and the second clamping member; an indicating member, the indicating member is used to indicate the stiffness information obtained by the detecting member.

According to the stiffness testing device of the embodiment of the utility model, the stiffness testing device is configured to include a first clamping member, a second clamping member, a driving member, a detecting member, and an indicating member. The driving member can drive the first clamping member and the second clamping member to approach each other and clamp the bracket, and the detecting member can detect the stiffness information of the bracket on the first clamping member and the second clamping member, and the stiffness information can be displayed by the indicating member. The structure is simple, which is conducive to miniaturization, convenient for operators to hold and operate easily, can reduce costs, and improve detection efficiency.

In some embodiments of the present invention, the first clamping member and the second clamping member are connected via a pivot axis.

In some embodiments of the present invention, the first clamping member and the second clamping member are cross-arranged, the pivot axis is arranged on the intersection of the first clamping member and the second clamping member, a clamping space is formed between the first clamping member and the second clamping member, and the driving member is arranged on the side of the pivot axis away from the clamping space.

In some embodiments of the present invention, the first clamping member is provided with a first clamping end, the second clamping member is provided with a second clamping end, and the first clamping end and the second clamping end are arranged in the clamping space.

In some embodiments of the present invention, the first clamping end and the driving member are disposed at two opposite ends of the first clamping member, and the second clamping end and the driving member are disposed at two opposite ends of the second clamping member.

In some embodiments of the present invention, the detecting member on the first clamping member is close to the first clamping end, and the detecting member on the second clamping member is close to the second clamping end.

In some embodiments of the present invention, the first clamping member includes a first clamping plate, a first driven plate and a first connecting plate, the first clamping plate and the first driven plate are parallel to each other and are staggered at intervals, and the first connecting plate connects the first clamping plate and the first driven plate; the second clamping member includes a second clamping plate, a second driven plate and a second connecting plate, the second clamping plate and the second driven plate are parallel to each other and are staggered at intervals, and the second connecting plate connects the second clamping plate and the second driven plate; the pivot shaft connects the first connecting plate and the second connecting plate; the driving member connects the first driven plate and the second driven plate.

In some embodiments of the present invention, the detection member includes a force detection member and a displacement detection member, the force detection member is used to detect the force applied to the bracket when it is clamped, and the displacement detection member is used to detect the displacement generated when the bracket is clamped.

In some embodiments of the present invention, the indicator is a reading meter, and the reading meter is arranged on the first clamping member or the second clamping member.

In some embodiments of the present invention, the indicator is a display component, and the display component is electrically or communicatively connected to the detection component.

Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic structural diagram of a stiffness testing device in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structure of the bracket in the embodiment of the present utility model.

Reference numerals:

100. Stiffness testing device;

1. first clamping member; 101. first clamping end; 11. first clamping plate; 12. first connecting plate; 13. first driven plate;

2. Second clamping member; 201. Second clamping end; 21. Second clamping plate; 22. Second connecting plate; 23. Second driven plate;

3. Driving member; 4. Detection member; 5. Indicator member; 6. Pivot shaft;

10. Bracket; 1001. First part; 1002. Second part.

Detailed ways

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation on the present invention.

In addition, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

In the description of the present invention, unless otherwise specified, “plurality” means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

1-2 , a stiffness testing device 100 according to an embodiment of the present invention is described below.

As shown in Fig. 1 and Fig. 2, the stiffness testing device 100 of the embodiment of the utility model is used to detect the stiffness of the bracket 10 on the vehicle, and the stiffness testing device 100 includes: a first clamping member 1, a second clamping member 2, a driving member 3, a detection member 4, and an indicating member 5. The second clamping member 2 and the first clamping member 1 are arranged relative to each other. The driving member 3 is used to drive the first clamping member 1 and the second clamping member 2 to move closer to or away from each other. The detection member 4 is arranged on the first clamping member 1 and the second clamping member 2 to obtain the stiffness of the bracket 10 under the action of the first clamping member 1 and the second clamping member 2. The indicating member 5 is used to indicate the stiffness information obtained by the detection member 4.

When testing the stiffness of the bracket 10, referring to Figures 1 and 2, the first clamping member 1 abuts against the first part 1001 of the bracket 10, and the second clamping member 2 abuts against the second part 1002 of the bracket 10 (the arrows in Figure 2 are the force directions of the first part 1001 and the second part 1002), and the driving member 3 applies a load to the second clamping member 2 and the first clamping member 1, so that the second clamping member 2 and the first clamping member 1 are close to each other to clamp the bracket 10. As the load applied by the driving member 3 gradually increases, the bracket 10 deforms. In this process, the detection member 4 can obtain the stiffness information of the bracket 10, and the operator can observe the stiffness information obtained by the detection member 4 through the indicator 5, and read the test value at any time. Among them, the driving member 3 can be an electric push rod, a cylinder or an oil cylinder, etc.

Compared with the conventional use of special tooling, benches, pressure detection equipment and displacement reading equipment to detect the stiffness of the bracket 10, since the main components of the stiffness testing device 100 are the second clamping member 2 and the first clamping member 1, its structure is relatively simple, which is conducive to miniaturization, reducing the volume, convenient to carry and use, and easy to operate. At the same time, the operator can intuitively obtain the detected stiffness information through the indicator 5, and the requirements for the user are relatively low. In addition, since the overall structure and principle of the device are relatively simple, the stability and technical reliability are relatively high, and the risk of failure is relatively low.

According to the stiffness testing device 100 of the embodiment of the utility model, the stiffness testing device 100 is configured to include a first clamping member 1, a second clamping member 2, a driving member 3, a detecting member 4, and an indicating member 5. The driving member 3 can drive the first clamping member 1 and the second clamping member 2 to approach each other and clamp the bracket 10, and detect the stiffness information of the bracket 10 on the first clamping member 1 and the second clamping member 2 through the detecting member 4, and display the stiffness information through the indicating member 5. The structure is simple, which is conducive to miniaturization, convenient for operators to hold and operate simply, can reduce costs, and improve detection efficiency.

In some embodiments of the present invention, as shown in Fig. 1, the first clamping member 1 and the second clamping member 2 are connected via a pivot shaft 6. That is, the first clamping member 1 and the second clamping member 2 can be directly connected via the pivot shaft 6, and the bracket 10 can be clamped in a clamping manner for stiffness testing, which is beneficial to saving the number of parts, reducing the weight of the stiffness testing device 100 and reducing the cost.

Optionally, the first clamping member 1 and the second clamping member 2 can also be translated in opposite directions to move closer to or farther from each other. For example, the first clamping member 1 and the second clamping member 2 are arranged on a base, and the driving member 3 can drive the first clamping member 1 and the second clamping member 2 to move on the base to clamp the bracket 10.

In some embodiments of the present utility model, as shown in Figure 1, the first clamping member 1 and the second clamping member 2 are arranged crosswise, the pivot shaft 6 is arranged on the intersection of the first clamping member 1 and the second clamping member 2, a clamping space is formed between the first clamping member 1 and the second clamping member 2, and the driving member 3 is arranged on the side of the pivot shaft 6 away from the clamping space.

It can be understood that the first clamping member 1 and the second clamping member 2 can be components with a middle protrusion, and the middle protrusions of the two are connected by a pivot shaft 6 to realize that the first clamping member 1 and the second clamping member 2 can rotate relative to each other. The first clamping member 1 and the second clamping member 2 can also be arranged in a cross-arrangement manner, and the pivot shaft 6 is arranged on the intersection of the first clamping member 1 and the second clamping member 2. In this manner, the structure of the first clamping member 1 and the second clamping member 2 is relatively simple, without a complex structure, which is conducive to reducing costs. The clamping space is used to clamp the bracket 10. In this solution, the bracket 10 and the driving member 3 are located on both sides of the pivot shaft 6, so that a lever-saving structure is formed on the first clamping member 1 and the second clamping member 2, which can reduce the requirements for the driving member 3 and reduce the power consumption of the driving member 3.

In some embodiments of the utility model, as shown in Figure 1, a first clamping end 101 is provided on the first clamping member 1, and a second clamping end 201 is provided on the second clamping member 2, and the first clamping end 101 and the second clamping end 201 are provided in the clamping space. That is to say, the first clamping end 101 and the second clamping end 201 act on the bracket 10 to clamp the bracket 10 to deform. Since the volume of the first clamping end 101 is relatively small relative to the first clamping member 1, and the volume of the second clamping end 201 is also relatively small relative to the second clamping member 2, when the required clamping force is applied to the bracket 10, the requirements for the driving member 3 can be further reduced, and the power consumption can also be further reduced.

In some embodiments of the utility model, as shown in FIG1 , the first clamping end 101 and the driving member 3 are arranged at opposite ends of the first clamping member 1, and the second clamping end 201 and the driving member 3 are arranged at opposite ends of the second clamping member 2. The opposite ends of the first clamping member 1 may refer to the two ends in the length direction of the first clamping member 1. Similarly, the opposite ends of the second clamping member 2 may refer to the two ends in the length direction of the second clamping member 2 (the length direction may refer to the up-down direction in FIG1 ). In this technical solution, when the driving member 3 applies a load to the first clamping member 1 and the second clamping member 2 on the bracket 10, the force arm formed on the first clamping member 1 and the second clamping member 2 is relatively long, so that when the bracket 10 is subjected to the required clamping force, it is beneficial to further reduce the output force of the driving member 3 and reduce the power consumption of the driving member 3.

In some embodiments of the present invention, as shown in Fig. 1, the detection member 4 on the first clamping member 1 is close to the first clamping end 101, and the detection member 4 on the second clamping member 2 is close to the second clamping end 201. It can be understood that the detection member 4 is close to the clamping end, which can reduce the probability of detection error caused by deformation of the device itself and improve detection accuracy.

In some embodiments of the utility model, as shown in FIG1 , the first clamping member 1 includes a first clamping plate 11, a first driven plate 13 and a first connecting plate 12, the first clamping plate 11 and the first driven plate 13 are parallel to each other and are arranged at intervals, and the first connecting plate 12 connects the first clamping plate 11 and the first driven plate 13. The second clamping member 2 includes a second clamping plate 21, a second driven plate 23 and a second connecting plate 22, the second clamping plate 21 and the second driven plate 23 are parallel to each other and are arranged at intervals, and the second connecting plate 22 connects the second clamping plate 21 and the second driven plate 23. The pivot shaft 6 connects the first connecting plate 12 and the second connecting plate 22. The driving member 3 connects the first driven plate 13 and the second driven plate 23.

In the above technical solution, the first clamping plate 11 and the second clamping plate 21 are parallel plates to each other, and the first driven plate 13 and the second driven plate 23 are also parallel plates to each other, so that the overall width dimension formed by the first clamping member 1 and the second clamping member 2 is compared (the width dimension may refer to the dimension in the left and right direction in FIG. 1 ), which is conducive to reducing the volume and improving the ease of use of the stiffness testing device 100.

In some embodiments of the present invention, the detection member 4 includes a force detection member and a displacement detection member, the force detection member is used to detect the force applied to the bracket 10 when it is clamped, and the displacement detection member is used to detect the displacement generated when the bracket 10 is clamped. In other words, the first clamping plate 11 and the second clamping plate 21 are both provided with a force detection member and a displacement detection member, and the forces applied to the two ends of the bracket 10 can be detected respectively through the two force detection members, and the displacement generated by the deformation of the bracket 10 can be detected through the two displacement detection members.

Optionally, the force detecting component includes but is not limited to a force sensor.

Optionally, the displacement detecting member includes but is not limited to a displacement sensor.

In some embodiments of the present invention, the indicator 5 is a reading meter, which is arranged on the first clamping member 1 or the second clamping member 2. The reading meter can be a pointer meter, which has a relatively simple structure, good stability and reliability, and is conducive to extending the service life of the device.

In some embodiments of the present invention, the indicator 5 is a display component, which is electrically or communicatively connected to the detection component 4. The display component may be a display screen, which can directly display the stiffness information obtained by the detection component 4, making it easier for operators to obtain the stiffness information.

Optionally, the indicator 5 may be provided on the first clamp 1 or the second clamp 2. By integrating the indicator 5 on the first clamp 1 or the second clamp 2, the integration of the stiffness testing device 100 is improved, the volume is reduced, and it is further convenient to carry or use.

Other structures and operations of the stiffness testing device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A stiffness testing device, which is used to detect the stiffness of a bracket on a vehicle, characterized in that the stiffness testing device comprises: a first clamping member; a second clamping member, the second clamping member and the first clamping member being arranged opposite to each other; A driving member, the driving member is used to drive the first clamping member and the second clamping member to move closer to or away from each other; A detection member, wherein the detection member is disposed on the first clamping member and the second clamping member to obtain the stiffness of the bracket under the action of the first clamping member and the second clamping member; An indicator member, wherein the indicator member is used to indicate the stiffness information obtained by the detection member. 2 . The stiffness testing device according to claim 1 , wherein the first clamping member and the second clamping member are connected via a pivot shaft. 3 . 3. The stiffness testing device according to claim 2 is characterized in that the first clamping member and the second clamping member are arranged crosswise, the pivot axis is arranged on the intersection of the first clamping member and the second clamping member, a clamping space is formed between the first clamping member and the second clamping member, and the driving member is arranged on the side of the pivot axis away from the clamping space. 4. The stiffness testing device according to claim 3 is characterized in that the first clamping member is provided with a first clamping end, the second clamping member is provided with a second clamping end, and the first clamping end and the second clamping end are arranged in the clamping space. 5. The stiffness testing device according to claim 4 is characterized in that the first clamping end and the driving member are arranged at two opposite ends of the first clamping member, and the second clamping end and the driving member are arranged at two opposite ends of the second clamping member. 6 . The stiffness testing device according to claim 4 , wherein the detection member on the first clamping member is close to the first clamping end, and the detection member on the second clamping member is close to the second clamping end. 7. The stiffness testing device according to claim 3 is characterized in that the first clamping member comprises a first clamping plate, a first driven plate and a first connecting plate, the first clamping plate and the first driven plate are parallel to each other and are arranged at intervals and staggered, and the first connecting plate connects the first clamping plate and the first driven plate; the second clamping member comprises a second clamping plate, a second driven plate and a second connecting plate, the second clamping plate and the second driven plate are parallel to each other and are arranged at intervals and staggered, and the second connecting plate connects the second clamping plate and the second driven plate; The pivot shaft connects the first connecting plate and the second connecting plate; The driving member connects the first driven plate and the second driven plate. 8. The stiffness testing device according to any one of claims 1 to 7 is characterized in that the detection member includes a force detection member and a displacement detection member, the force detection member is used to detect the force applied to the bracket when it is clamped, and the displacement detection member is used to detect the displacement generated when the bracket is clamped. 9 . The stiffness testing device according to claim 1 , wherein the indicator is a reading meter, and the reading meter is arranged on the first clamping member or the second clamping member. 10. The stiffness testing device according to any one of claims 1 to 7, characterized in that the indicator is a display component, and the display component is electrically connected or communicatively connected to the detection component.