CN218847592U

CN218847592U - Clamping device for leaf spring fatigue test

Info

Publication number: CN218847592U
Application number: CN202222381351.4U
Authority: CN
Inventors: 邹强; 刘洋; 张莱; 彭彬
Original assignee: CHONGQING HONGYAN FANGDA AUTOMOBILE SUSPENSION CO LTD
Current assignee: CHONGQING HONGYAN FANGDA AUTOMOBILE SUSPENSION CO LTD
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-04-11
Anticipated expiration: 2032-09-08

Abstract

The utility model discloses a clamping device for leaf spring fatigue test, which comprises a fixed base and an auxiliary clamping component which are respectively arranged at the left side and the right side, wherein a first clamping block is fixed on the inner wall of the fixed base at the left side, a second clamping block matched with the first clamping block is arranged on the inner wall of the fixed base at the right side, the first clamping block and the second clamping block are connected through a clamping bolt, and a hole is enclosed between the first clamping block and the second clamping block; the auxiliary clamping assembly comprises pressing blocks which are respectively arranged on the front side and the rear side of the first clamping block or the second clamping block, and the pressing blocks on the front side and the rear side are connected through two tensioning bolts. The remarkable effects are as follows: the accuracy of the fatigue test result can be ensured, and the service life of the driving mechanism can be effectively ensured.

Description

Clamping device for leaf spring fatigue test

Technical Field

The utility model relates to automobile parts production and processing technical field, concretely relates to clamping device for leaf spring fatigue test.

Background

Leaf springs, referred to as leaf springs, are generally constructed from a plurality of steel plates of unequal length and different curvature. The plate spring is used as an elastic element, absorbs the impact force of a road surface on wheels to deform under the actual road surface working condition, has the buffering and damping effects, and also has the guiding function when the automobile is longitudinally arranged. The plate spring is widely applied to the suspension of the automobile at present due to the advantages of simple structure, low cost, convenient disassembly and assembly and the like. The fatigue test is one of the most important tests of the plate spring, the common failure modes of the plate spring comprise fracture and plastic deformation, the plate spring is subjected to the fatigue test by using a plate spring fatigue testing machine, and the service life of the plate spring is evaluated by simulating the working condition of parts and combining theoretical calculation and analysis.

When fatigue testing is performed on the plate spring by using a fatigue testing machine mill road test, a driving mechanism such as a hydraulic cylinder is required to apply force to the plate spring to simulate the bouncing process of the plate spring. However, the conventional fatigue testing machine driving mechanism is unreliable in fixation, and is easy to shake during long-time testing, so that the obtained testing result deviates from the actual testing result, and the reliability of the testing result is not high.

Disclosure of Invention

The utility model aims at providing a clamping device for leaf spring fatigue test to good fixed actuating mechanism avoids rocking, guarantees the reliability of test result.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a clamping device for leaf spring fatigue test which the key lies in: the fatigue test driving mechanism comprises a fixed base and an auxiliary clamping assembly which are respectively arranged on the left side and the right side, wherein a first clamping block is fixed on the inner wall of the left fixed base, a second clamping block matched with the first clamping block is arranged on the inner wall of the right fixed base, the first clamping block is connected with the second clamping block through a clamping bolt, and a hole matched with the appearance of the fatigue test driving mechanism is enclosed between the first clamping block and the second clamping block;

the auxiliary clamping assembly comprises pressing blocks which are respectively arranged on the front side and the rear side of the first clamping block or the second clamping block, and the pressing blocks on the front side and the rear side are connected through two tensioning bolts.

Furthermore, the fixed base comprises a mounting base plate and a mounting vertical plate vertically fixed on the mounting base plate, a plurality of reinforcing plates are connected to the outer walls of the mounting base plate and the mounting vertical plate side by side, and the first clamping block or the second clamping block is fixed on the inner wall of the mounting vertical plate.

Further, the size of the reinforcing plate is reduced from bottom to top.

Further, one of the two tie bolts is located above the first clamping block or the second clamping block, and the other tie bolt is located below the first clamping block or the second clamping block.

Furthermore, the first clamping block and the second clamping block are consistent in structure and are symmetrically arranged.

Furthermore, the first clamping block and the second clamping block are L-shaped, the vertical parts of the first clamping block and the second clamping block extend outwards and then are connected with the fixed base, the vertical end of the first clamping block is close to the horizontal end of the second clamping block, and the horizontal end of the first clamping block is close to the vertical end of the second clamping block.

The utility model discloses a show the effect and be: through the cooperation of the first clamping block, the second clamping block and the auxiliary clamping assembly, the driving mechanism can be better fixed, so that the phenomenon that the driving mechanism inclines and shakes or displaces in a fatigue test is avoided, the accuracy of a fatigue test result can be ensured, and the service life of the driving mechanism can be effectively ensured.

Drawings

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

fig. 2 is a top view of the present invention;

fig. 3 is a left side view of the present invention.

Detailed Description

The following describes the embodiments and the operation principle of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1-3, a clamping device for leaf spring fatigue test includes a fixed base 1 and an auxiliary clamping assembly 6 separately disposed on the left and right sides, a first clamping block 2 is fixed on the inner wall of the fixed base 1 on the left side, a second clamping block 3 matched with the first clamping block 2 is disposed on the inner wall of the fixed base 1 on the right side, the first clamping block 2 and the second clamping block 3 are connected through a clamping bolt 4, a hole 5 adapted to the shape of a driving mechanism 20 of a fatigue testing machine is enclosed between the first clamping block 2 and the second clamping block 3, the driving mechanism 20 is clamped and fixed in the hole 5, and the auxiliary clamping assembly 6 is used for clamping and fixing the first clamping block 2 and the second clamping block 3.

In this example, the fixing base 1 includes a mounting bottom plate 11 and a mounting vertical plate 12 vertically fixed on the mounting bottom plate 11, and a plurality of reinforcing plates 13 are connected side by side to outer walls of the mounting bottom plate 11 and the mounting vertical plate 12. Through the setting of reinforcing plate 13, fixed baseplate 1's structural strength has been strengthened effectively for the life of this device has better assurance, can also avoid simultaneously in the fatigue test process to lead to the fact because of joint strength is not enough to rock and influence the degree of accuracy of test result, makes the reliability of test result higher.

As can be seen from fig. 2, the first clamping block 2 and the second clamping block 3 are arranged in a substantially identical and symmetrical manner, the first clamping block 2 and the second clamping block 3 are both L-shaped, the vertical portions of the first clamping block 2 and the second clamping block 3 extend outward and then are connected with the fixed base 1, the vertical end of the first clamping block 2 is close to the horizontal end of the second clamping block 3, the horizontal end of the first clamping block 2 is close to the vertical end of the second clamping block 3, so as to enclose a hole 5 adapted to the shape structure of the driving mechanism 20, and the first clamping block 2 and the second clamping block 3 are connected and fixed by the action of the clamping bolt 4, so that the purpose of clamping and fixing the driving mechanism can be achieved.

As can also be seen from fig. 2 and 3, the auxiliary clamping assembly 6 includes pressing blocks 61 respectively disposed on the front and rear sides of the first clamping block 2 or the second clamping block 3, the pressing blocks 61 on both sides are connected with each other through two tightening bolts 62, and the front and rear sides of the first clamping block and the second clamping block 3 are clamped and fixed through the cooperation of the pressing blocks 61 and the tightening bolts 62, so that the periphery of the driving mechanism 20 can be well fastened, and the driving mechanism is ensured not to shake in the fatigue test process.

Furthermore, one of the two tie bolts 62 is located above the first clamping block 2 or the second clamping block 3, and the other tie bolt is located below the first clamping block 2 or the second clamping block 3, so that the auxiliary clamping assembly 6 can be hung on the first clamping block 2 or the second clamping block 3 all the time, and is not required to be installed or taken down in each test, the front side and the rear side of the first clamping block 2 and the front side and the rear side of the second clamping block 3 can be locked and fixed more conveniently, and the test efficiency is further improved effectively.

Through the auxiliary clamping assembly with the structure, the front side and the rear side of the first clamping block 2 and the second clamping block 3 are clamped and fixed, so that the driving mechanism can be better fixed, the phenomenon that the driving mechanism inclines and shakes or displaces in a fatigue test is avoided, the accuracy of an experimental result can be ensured, the driving mechanism can be effectively prevented from being damaged, and the service life of the driving mechanism is ensured.

The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a clamping device for leaf spring fatigue test which characterized in that: the fatigue test driving mechanism comprises a fixed base and an auxiliary clamping assembly which are respectively arranged on the left side and the right side, wherein a first clamping block is fixed on the inner wall of the left fixed base, a second clamping block matched with the first clamping block is arranged on the inner wall of the right fixed base, the first clamping block is connected with the second clamping block through a clamping bolt, and a hole matched with the appearance of the fatigue test driving mechanism is enclosed between the first clamping block and the second clamping block;

the auxiliary clamping assembly comprises pressing blocks which are respectively arranged on the front side and the rear side of the first clamping block or the second clamping block, and the pressing blocks on the two sides are connected through two tensioning bolts;

the fixing base comprises a mounting base plate and a mounting vertical plate vertically fixed on the mounting base plate, a plurality of reinforcing plates are connected to the outer walls of the mounting base plate and the mounting vertical plate side by side, and the first clamping block or the second clamping block is fixed on the inner wall of the mounting vertical plate.

2. The clamping device for a leaf spring fatigue test according to claim 1, wherein: the size of the reinforcing plate is gradually reduced from bottom to top.

3. The clamping device for a leaf spring fatigue test according to claim 1, characterized in that: one of the two tensioning bolts is positioned above the first clamping block or the second clamping block, and the other tensioning bolt is positioned below the first clamping block or the second clamping block.

4. The clamping device for a leaf spring fatigue test according to any one of claims 1 to 3, characterized in that: the first clamping block and the second clamping block are consistent in structure and are symmetrically arranged.

5. The clamping device for a leaf spring fatigue test according to claim 4, characterized in that: the first clamping block and the second clamping block are L-shaped, the vertical parts of the first clamping block and the second clamping block extend outwards and then are connected with the fixed base, the vertical end of the first clamping block is close to the horizontal end of the second clamping block, and the horizontal end of the first clamping block is close to the vertical end of the second clamping block.