CN219319943U

CN219319943U - Drum brake shoe friction material bonding strength frock clamp

Info

Publication number: CN219319943U
Application number: CN202222890891.5U
Authority: CN
Inventors: 宁洪涛
Original assignee: Wuxi Palla Electric Vehicle Co ltd
Current assignee: Wuxi Palla Electric Vehicle Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-07-07
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a drum brake shoe friction material bonding strength tool clamp, which comprises a fixed seat (1) and a clamping device, wherein the fixed seat is used for fixing a test sample (17); a shearing test head which can move relative to the fixed seat (1) and is used for shearing the test sample (17); the shearing test head comprises a sleeve (2), the sleeve (2) is positioned above the fixed seat (1), the test sample (17) is positioned on the circumference of the fixed seat (1), the inner edge of the lower end of the sleeve (2) is used for shearing the outer circumferential surface of the test sample (17) downwards in an axial direction, and the detection efficiency is improved and the cost is reduced through the tool clamp.

Description

Drum brake shoe friction material bonding strength frock clamp

Technical Field

The utility model relates to the technical field of electric vehicles, in particular to a tool clamp for bonding strength of friction materials of drum brake shoes.

Background

The utility model provides a brake shoe friction material bonding strength frock clamp, through this frock clamp improvement detection efficiency, reduce cost, among the prior art, mainly adopt the loading test to brake shoe friction material bonding strength's detection, lean on the road test to ride promptly and go detection verification, it is very consuming time, the cost is higher to the effect that very important is played to people's life safety directly to the sound of brake shoe friction material bonding, if because the drop of brake shoe friction material leads to the brake out of control, directly can lead to serious hidden danger to customer life safety.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide the tool clamp for the bonding strength of the friction material of the drum brake shoe, and the detection efficiency is improved and the cost is reduced through the tool clamp.

Compared with the prior art, the utility model provides a drum brake shoe friction material bonding strength tool clamp, which comprises: the fixing seat is used for fixing the test sample; the shearing test head can move relative to the fixed seat and is used for shearing the test sample; the shearing test head comprises a sleeve, the sleeve is positioned above the fixing seat, the test sample is positioned on the circumference of the fixing seat, and the inner edge of the lower end of the sleeve is used for shearing the outer circumferential surface of the test sample downwards in an axial direction.

The improved press comprises an upper support plate and a lower support plate, wherein the upper support plate is used for being connected with a working head of the press, the lower support plate is used for being connected with a working table of the press, a sleeve is connected with the upper support plate, a fixing seat is connected with the lower support plate, and the upper support plate, the sleeve, the fixing seat and the lower support plate are sequentially arranged.

As an improvement, a guide component is arranged between the upper support plate and the lower support plate and is used for guiding the upper support plate to axially move relative to the lower support plate.

As an improvement, the sleeve is provided with an auxiliary supporting part, an elastic supporting piece is arranged between the auxiliary supporting part and the inner top surface of the sleeve, the elastic supporting piece is elastically pressed on the auxiliary supporting part, and the auxiliary supporting part is used for pressing and fastening the test sample on the fixing seat.

As an improvement, the elastic support member comprises a plurality of springs uniformly arranged along the circumferential direction of the auxiliary support portion, and a guide rod is sleeved in the springs and used for guiding the auxiliary support portion to axially move.

As an improvement, a first equal-height block protruding downwards axially is arranged at the middle position of the lower side surface of the auxiliary supporting part, a second equal-height block is arranged at the upper side surface of the fixing seat, the opposite side of the second equal-height block is used for fixedly mounting the test sample, when the auxiliary supporting part and the fixing seat clamp and fix the test sample up and down, the first equal-height block presses the test sample, the second equal-height block supports the lower side surface of the auxiliary supporting part, and the first equal-height block and the second equal-height block are used for ensuring that the auxiliary supporting part horizontally presses the test sample.

As an improvement, the sleeve and the auxiliary supporting part can be in sliding sleeve joint fit, and the auxiliary supporting part can form axial auxiliary guide for the sleeve.

As an improvement, the fixing seat is provided with a mounting area of the test sample which is arranged in a bilateral symmetry manner, and a connecting piece for fixing the test sample is arranged in the mounting area.

After adopting the structure, compared with the prior art, the utility model has the following advantages: the utility model discloses a frock clamp shears test sample outer peripheral face downwards through the inward flange of axial motion's sleeve lower extreme, in shearing process, test sample can be by the axial sleeve in gradually, after design like this, can install this frock clamp on the press, the press is connected with force transducer, the working head of press can drive sleeve axial downward motion to obtain the detection data of shearing force, and then know drum brake shoe friction material bonding strength, consequently, be favorable to improving detection efficiency, reduce cost through this frock clamp.

Drawings

Fig. 1 is a schematic perspective view of a drum brake shoe friction material bond strength tooling fixture.

Fig. 2 is a side view of a drum brake shoe friction material bond strength tooling fixture.

Fig. 3 is a cross-sectional view taken along A-A of fig. 2.

Fig. 4 is a perspective view of the holder without the test specimen mounted thereon.

Fig. 5 is a perspective view of the holder with the test sample mounted.

Fig. 6 is a schematic perspective view of a part of the drum brake shoe friction material bonding strength tool clamp located on the upper side of the fixing seat.

In the figure, 1, a fixed seat, 2, a sleeve, 3, an upper supporting plate, 4, a lower supporting plate, 5, a guiding component, 6, an auxiliary supporting part, 7, a spring, 8, a guiding rod, 9 and a first equal-height block, 10, a second equal-height block, 11, an installation area, 12, a sleeve joint rod, 13, a positioning column, 14, a positioning block, 15, a hoof surface, 16, a pressing surface, 17, a test sample, 18 and an inverted T-shaped block.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The present utility model is described in further detail below:

as shown in fig. 1 to 6, the fixture comprises an upper support plate 3 and a lower support plate 4, wherein the upper support plate 3 and the lower support plate 4 are rectangular steel blocks, the upper support plate 3 is provided with a jacking surface 16, the jacking surface 16 is used for being connected with a working head of a press, namely the working head is pressed on the jacking surface 16, the lower support plate 4 is used for being connected with a working table of the press, and the press is provided with a pressure sensor, so that the data of the pressed shearing force are obtained. The sleeve 2 is connected with the upper supporting plate 3, the fixing base 1 is connected with the lower supporting plate 4, and the upper supporting plate 3, the sleeve 2, the fixing base 1 and the lower supporting plate 4 are sequentially arranged.

In some embodiments, as shown in fig. 3, in order to realize elastic support and guide of the auxiliary supporting part 6 and associated upper supporting plate 3, the present embodiment further comprises an inverted T-shaped block 18, wherein the inverted T-shaped block 18 is used as an intermediate structural member, a vertical part of the inverted T-shaped block 18 is sleeved with a mounting hole of the upper supporting plate 3, a top surface of the vertical part extends out and is connected with an upper transverse part in a bolting manner, the upper transverse part is cylindrical, a circular top surface of the upper transverse part is used as a pressing surface 16, a transverse part of the inverted T-shaped block 18 is attached to and fixed with a lower side surface of the upper supporting plate 3 by bolting manner, thereby the inverted T-shaped block 18 is mounted on the upper supporting plate 3, the inverted T-shaped block 18 moves axially together with the upper supporting plate 3, a spring 7 is arranged between the lower side surface of the transverse part of the inverted T-shaped block 18 and the upper side surface of the auxiliary supporting part 6 which is matched in the sleeve 2 in a sliding sleeve, and the transverse part of the inverted T-shaped block 18 and the auxiliary supporting part 6 are respectively provided with guide holes aligned up and down, a guide rod 8 is fixed in the guide hole of the auxiliary supporting part 6, and the guide rod 8 passes through the spring 7 and extends into the guide hole of the movable sleeve. After such design, in the process that the inner edge of the lower end of the sleeve 2 shears the outer peripheral surface of the test sample 17 (namely the hoof surface 15) downwards in the axial direction, the auxiliary supporting part 6 is reversely pushed back into the sleeve 2 along with the cutting and downward movement of the sleeve 2 and the hoof surface 15 until the hoof surface 15 is cut to fall off. The technical scheme can be called as a split structure, and the split structure is adopted, so that the split structure is convenient to manufacture and assemble.

In some embodiments, as shown in fig. 1, 3 and 6, a guide assembly 5 is disposed between the upper support plate 3 and the lower support plate 4, and the guide assembly 5 is used for guiding the axial movement of the upper support plate 3 relative to the lower support plate 4, so that the upper support plate 3 is designed to facilitate smooth axial movement. In addition, the combined sleeve 2 and the auxiliary supporting part 6 can be in sliding sleeve joint fit, and the auxiliary supporting part 6 can form axial auxiliary guide for the sleeve 2, so that the axial movement of the sleeve 2 can be further ensured.

In some embodiments, as shown in fig. 3, 5 and 6, a first equal-height block 9 protruding downwards axially is arranged at a central position of the lower side of the auxiliary supporting portion 6, a second equal-height block 10 is arranged at the upper side of the fixed seat 1, opposite sides of the second equal-height block 10 are used for fixing and installing the test sample 17, when the auxiliary supporting portion 6 clamps and fixes the test sample 17 up and down with the fixed seat 1, the first equal-height block 9 presses the test sample 17, the second equal-height block 10 supports the lower side of the auxiliary supporting portion 6, the first equal-height block 9 and the second equal-height block 10 are used for guaranteeing that the auxiliary supporting portion 6 horizontally presses the test sample 17, and the auxiliary supporting portion 6 is used for fixing the test sample 17 on the fixed seat 1 in a pressing manner, so that the auxiliary supporting portion 6 can cooperate with the guide assembly 5 to guide and can always horizontally press and fix the test sample 17, that is, in other words, the structural scheme disclosed by the method is beneficial to realizing good fixing and axial shearing of the test sample 17 in the whole shearing process, and thus beneficial to detection accuracy.

In some embodiments, since the drum brake shoes are a pair, that is, two drum brake shoes on the left and right, then, due to different directions, in order to be able to detect by using the present disclosure Zhuang Gaju, as shown in fig. 4, the fixing base 1 is provided with a mounting area 11 of the test sample 17 that is symmetrically disposed on the left and right, respectively, the mounting area 11 is provided with a connecting piece for fixing the test sample 17, the connecting piece includes a sleeve connection rod 12, a positioning column 13 and a positioning block 14, the positioning column 13 and the positioning block 14 are centrally disposed, four sleeve connection rods 12 are total, two left mounting areas, and two right mounting areas are symmetrically disposed on the left and right sides with respect to the positioning column 13 and the positioning block 14.

As shown in fig. 5, a test specimen 17 is mounted to the left mounting region, and the auxiliary supporting portion 6 is supported by the second contour 10 to the right mounting region.

The foregoing description is only illustrative of the present utility model and is therefore intended to cover all such modifications and changes in form, details, and materials as fall within the true spirit and scope of the utility model.

Claims

1. The utility model provides a drum brake shoe friction material bonding strength frock clamp which characterized in that includes:

a holder (1) for holding a test sample (17);

a shearing test head which can move relative to the fixed seat (1) and is used for shearing the test sample (17);

the shearing test head comprises a sleeve (2), the sleeve (2) is positioned above the fixed seat (1), the test sample (17) is positioned on the circumference of the fixed seat (1), and the inner edge of the lower end of the sleeve (2) is used for shearing the outer circumferential surface of the test sample (17) downwards in an axial direction.

2. The drum brake shoe friction material bonding strength tool clamp according to claim 1, further comprising an upper supporting plate (3) and a lower supporting plate (4), wherein the upper supporting plate (3) is used for being connected with a working head of a press, the lower supporting plate (4) is used for being connected with a working table of the press, the sleeve (2) is connected with the upper supporting plate (3), the fixing base (1) is connected with the lower supporting plate (4), and the upper supporting plate (3), the sleeve (2), the fixing base (1) and the lower supporting plate (4) are sequentially arranged.

3. Drum brake shoe friction material bonding strength tool clamp according to claim 2, characterized in that a guiding assembly (5) is arranged between the upper support plate (3) and the lower support plate (4), and the guiding assembly (5) is used for guiding the upper support plate (3) to axially move relative to the lower support plate (4).

4. Drum brake shoe friction material bonding strength tool clamp according to claim 2, characterized in that the sleeve (2) is provided with an auxiliary support part (6), an elastic support piece is arranged between the auxiliary support part (6) and the inner top surface of the sleeve (2), the elastic support piece is elastically pressed against the auxiliary support part (6), and the auxiliary support part (6) is used for pressing and fixing the test sample (17) on the fixing seat (1).

5. Drum brake shoe friction material bonding strength tool clamp according to claim 4, characterized in that the elastic support comprises a plurality of springs (7) uniformly arranged along the circumferential direction of the auxiliary support part (6), wherein a guide rod (8) is sleeved in the springs (7), and the guide rod (8) is used for guiding the auxiliary support part (6) to axially move.

6. The drum brake shoe friction material bonding strength tool clamp according to claim 4, wherein a first equal-height block (9) protruding downwards axially is arranged at the middle position of the lower side face of the auxiliary supporting portion (6), a second equal-height block (10) is arranged on the upper side face of the fixing base (1), the opposite side of the second equal-height block (10) is used for fixedly installing a test sample (17), when the auxiliary supporting portion (6) and the fixing base (1) clamp and fix the test sample (17) up and down, the first equal-height block (9) presses the test sample (17), the second equal-height block (10) supports the lower side face of the auxiliary supporting portion (6), and the first equal-height block (9) and the second equal-height block (10) are used for guaranteeing that the auxiliary supporting portion (6) horizontally presses the test sample (17).

7. Drum brake shoe friction material bonding strength tool clamp according to claim 6, characterized in that the sleeve (2) is slidably socket-fitted with the auxiliary support part (6), the auxiliary support part (6) being configured for axial auxiliary guiding of the sleeve (2).

8. Drum brake shoe friction material bonding strength tool clamp according to claim 1 or 4 or 6, characterized in that the fixing seat (1) is provided with a mounting area (11) of the test sample (17) arranged in bilateral symmetry, and a connecting piece for fixing the test sample (17) is arranged in the mounting area (11).

9. The drum brake shoe friction material bonding strength tool clamp according to claim 8, wherein the mounting areas (11) are a left mounting area and a right mounting area respectively, the connecting piece comprises a sleeve connecting rod (12), a positioning column (13) and a positioning block (14), the positioning column (13) and the positioning block (14) are arranged in the middle, the sleeve connecting rod (12) is four in total, the left mounting areas are two, and the right mounting areas are arranged in a bilateral symmetry mode relative to the positioning column (13) and the positioning block (14).