A device for testing the tensile properties of a brake hose

Abstract

The utility model relates to brake hose field discloses a brake hose tensile property testing arrangement, including the bottom plate, the bottom plate top fixedly connected with the fixing frame, the fixing frame top fixedly connected with first motor, first motor output fixedly connected with first threaded rod, the first threaded rod outer wall is connected with the mounting plate, the mounting plate bottom and the bottom plate top all are provided with clamping assembly, the left side of fixing frame front part is provided with detection assembly, the right side of fixing frame front part is provided with the restriction component, the detection assembly includes the mounting frame, the mounting frame fixedly connected in the fixing frame outer wall front side. In the utility model, through the linkage of detection assembly through the round ring, slide and taper block, under the driving of second motor, the accurate detection is carried out to the brake hose surface. When the taper block contacts the hose, through different contact angles and positions make the acting force form the various stress distribution, and the protruding and recessed surface of accurate detection hose.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake hose field especially relates to a brake hose tensile property testing device. BACKGROUND

[0002] Brake hose is a kind of flexible pipeline for connecting brake master cylinder and brake cylinder (or brake caliper), its main function is to transmit the hydraulic pressure generated by brake master cylinder to each brake cylinder during braking, so as to push brake shoe or brake caliper to contact brake disc, make vehicle decelerate or stop, and tensile property detection is needed in the process of brake hose production to ensure the performance of brake hose.

[0003] At present, the existing detection equipment is often difficult to detect the surface of the hose comprehensively and accurately, and most of them can only be simple visual inspection or single dimension physical measurement, which is difficult to capture the subtle concave-convex changes on the surface and accurately position, so that some potential quality problems are difficult to be found and handled in time, and therefore a brake hose tensile property testing device is proposed. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a brake hose tensile property testing device, which aims at improving the problem that it is difficult to capture the subtle concave-convex changes on the surface and accurately position in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a brake hose tensile property testing device, comprising a bottom plate, the top of the bottom plate is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first threaded rod, the outer wall of the first threaded rod is threadedly connected with a mounting plate, the bottom of the mounting plate and the top of the bottom plate are both provided with a clamping assembly, the left side of the front of the fixing frame is provided with a detection assembly, and the right side of the front of the fixing frame is provided with a limiting assembly.

[0006] The detection assembly comprises a mounting frame, the mounting frame is fixedly connected to the outer wall of the front side of the fixing frame, the top of the mounting frame is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second threaded rod, the outer wall of the second threaded rod is threadedly connected with a fixed plate, the outer wall of the fixed plate is fixedly connected with a circular ring, a plurality of slide rods are slidably connected in the circular ring, the outer wall of the circular ring is fixedly connected with a plurality of cylinders, one side of the slide rod is fixedly connected with a taper block, the other side of the slide rod is fixedly connected with a limiting plate, the side, away from the slide rod, of the limiting plate is fixedly connected with a first spring, and two cavities are formed in the cylinders.

[0007] Further description of the above technical scheme:

[0008] The clamping assembly comprises two housings, the two housings are respectively arranged at the bottom of the mounting plate and the top of the bottom plate, screw rods are threadedly connected to the middle portions of the housings, clamping blocks are fixedly connected to the opposite sides of the two screw rods, two sliding plates are clamped outside the clamping blocks, and a protection assembly is arranged inside the sliding plates.

[0009] As a further description of the above technical solution:

[0010] The protection assembly comprises a connecting rod, the connecting rod is slidably connected to the inside of the sliding plate, a blocking block is fixedly connected to one end of the connecting rod, an arc-shaped clamping plate is fixedly connected to one end of the connecting rod, a second spring is fixedly connected to the side, away from the connecting rod, of the blocking block, a limiting rod is fixedly connected to the inner wall of the sliding plate, and the blocking block is slidably connected to the outer wall of the limiting rod.

[0011] As a further description of the above technical solution:

[0012] The limiting assembly comprises a limiting frame, the limiting frame is fixedly connected to the front portion of the outer wall of the fixing frame, a sliding block is slidably connected to the inside of the limiting frame, and the sliding block is fixedly connected to the outer wall of the mounting plate at the end, away from the limiting frame.

[0013] As a further description of the above technical solution:

[0014] The rear portion of the sliding plate is fixedly connected with a sliding column, two sliding grooves are formed in the rear wall of the housing, and the outer wall of the sliding column is slidably connected to the inside of the sliding grooves.

[0015] As a further description of the above technical solution:

[0016] Two pipelines are formed in the inside of the sliding rod, the first spring is fixedly connected to the inner wall of the cylinder at the end, away from the limiting plate, a blocking block is arranged in the inside of the cylinder, a supplement opening is arranged at the top of the cavity, and a through hole is formed in the side of the cavity, close to the sliding rod.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the arc-shaped clamping plate is in a corrugated shape, and the second spring is fixedly connected to the inner wall of the sliding plate at the end, away from the blocking block.

[0019] As a further description of the above technical solution:

[0020] The front wall of the housing is fixedly connected with two baffle plates, and the top end of the screw rod is fixedly connected with a rotating handle.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、The utility model discloses a through the linkage of the detection component through the circular ring, the slide bar and the taper block, under the driving of second motor, the accurate detection is carried out to the brake hose surface. When the taper block contacts the hose, through different contact angle and position make the acting force form the multiple stress distribution, the accurate detection hose surface protruding and recessed situation, and when detecting protruding or recessed, can mark in time, provide the explicit position information for subsequent analysis hose quality problem.

[0023] 2、The utility model discloses a through setting protection subassembly, with second spring joint blocking piece and spacing block, when clamping, buffer impact force, effectively avoid because of the damage such as the scratch of hose, deformation of appearing due to excessive clamping force, when loosening, and the spring restoring force helps the clamping plate to return to the original position again, through the corrugated inner wall of arc clamping plate, the ingenious increase and the friction of hose, firm clamping. ACCURACY

[0024] Figure 1 It is a kind of brake hose tensile property testing device's perspective view for the utility model proposes;

[0025] Figure 2 It is a kind of brake hose tensile property testing device's fixed plate schematic view for the utility model proposes;

[0026] Figure 3 It is a kind of brake hose tensile property testing device's circular ring sectional view for the utility model proposes;

[0027] Figure 4 For Figure 3 It is the enlarged view of A in the utility model;

[0028] Figure 5 It is a kind of brake hose tensile property testing device's clamping block schematic view for the utility model proposes;

[0029] Figure 6 It is a kind of brake hose tensile property testing device's slide column schematic view for the utility model proposes;

[0030] Figure 7 It is a kind of brake hose tensile property testing device's shell sectional view for the utility model proposes.

[0031] Legend:

[0032] 1, bottom plate; 2, fixed frame; 3, first motor; 4, first threaded rod; 5, mounting plate; 6, shell; 7, mounting frame; 8, second motor; 9, second threaded rod; 10, fixed plate; 11, ring; 12, slide rod; 13, taper block; 14, limit plate; 15, first spring; 16, cylinder; 17, cavity; 18, pipeline; 19, slider; 20, screw; 21, clamping block; 22, sliding plate; 23, blocking block; 24, connecting rod; 25, second spring; 26, arc-shaped clamping plate; 27, limiting rod; 28, sliding groove; 29, slide column; 30, limiting frame. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] Referring to Figures 1-3 , the utility model provides an embodiment: a kind of brake hose tensile property testing device, including bottom plate 1, bottom plate 1 as the basis support component of whole device, the installation and operation of other components are provided with stable platform foundation, ensure that the whole testing device does not occur in the working process Shaking or displacement, to guarantee the accuracy and reliability of test result, bottom plate 1 top is fixedly connected with fixed frame 2, fixed frame 2 play the role of connection and support other components, for subsequent installation other components provide stable mounting position, fixed frame 2 top is fixedly connected with first motor 3, first motor 3 output end is fixedly connected with first threaded rod 4, first threaded rod 4 outer wall is connected with mounting plate 5, first motor 3 is the key component of power supply, its output end is fixedly connected with first threaded rod 4, rotate first threaded rod 4 by the rotation of motor, to realize the up and down movement of mounting plate 5 connected with it screw, mounting plate 5 bottom and bottom plate 1 top are all provided with clamping assembly, clamping assembly is used to firmly hold the two ends of brake hose, so as to exert force on hose during stretching. Fixed frame 2 front left side is provided with detection assembly, detection assembly can detect and record relevant parameters during brake hose stretching, provide data basis for evaluating the tensile property of hose. Fixed frame 2 front right side is provided with limiting assembly, limiting assembly can guide and limit the movement of mounting plate 5, ensure that mounting plate 5 keeps stable movement track during up and down movement, avoid deviation or shaking etc. to improve the accuracy and reliability of test;

[0035] Referring to Figures 2-4The detection assembly comprises a mounting frame 7 fixedly connected to the front side of the outer wall of the fixing frame 2, and the mounting frame 7 is fixedly connected to the front side of the outer wall of the fixing frame 2 to provide a mounting base and a support structure for other components in the detection assembly. A second motor 8 is fixedly connected to the top of the mounting frame 7, and the second motor 8 serves as a power driving unit of the detection assembly and starts and outputs power after receiving a corresponding control signal. The second motor 8 is fixedly connected to the output end of the second screw rod 9, and the rotary motion of the second motor 8 drives the second screw rod 9 to rotate synchronously. The outer wall of the second screw rod 9 is threadedly connected with a fixed plate 10. Based on the screw transmission principle, when the second screw rod 9 rotates, the fixed plate 10 will move along the axial direction of the second screw rod 9. The outer wall of the fixed plate 10 is fixedly connected with a circular ring 11, and the circular ring 11 moves synchronously with the fixed plate 10 and provides a relatively stable moving frame for the internal slide rod 12 and the like. The circular ring 11 is slidably connected with a plurality of slide rods 12 inside the circular ring 11, and the slide rods 12 can flexibly slide radially inside the circular ring 11. The outer wall of the circular ring 11 is fixedly connected with a plurality of cylinder bodies 16, and the cylinder bodies 16 form an integral structure with the circular ring 11. During the operation of the device, the structure and medium inside the cylinder body 16 can participate in the detection process of the performance of the brake hose. The slide rod 12 is fixedly connected with a taper block 13 on one side, and the special shape of the taper block 13 is conducive to more concentratedly applying force when contacting the brake hose. The other side of the slide rod 12 is fixedly connected with a limiting plate 14, and the limiting plate 14 limits the sliding range of the slide rod 12 to prevent the slide rod 12 from deviating from the constraint range of the circular ring 11 during sliding. The limiting plate 14 is fixedly connected with a first spring 15 away from the slide rod 12, and the first spring 15 can provide elastic restoring force for the slide rod 12. When the slide rod 12 is displaced by an external force, the first spring 15 will store elastic potential energy, and after the action force disappears, the slide rod 12 will be restored to the initial position. Two cavities 17 are formed in the cylinder body 16, and the cavities 17 can be used as spaces for containing specific detection media such as gas and liquid. By monitoring the pressure, temperature, flow and other parameter changes of the medium in the cavity 17, the sealing performance, permeability and other performance information of the brake hose during stretching can be indirectly obtained.

[0036] Referring to Figure 5The clamping assembly comprises two housings 6, which are respectively installed on the bottom of the mounting plate 5 and the top of the bottom plate 1. The housing 6 serves as an external protection and mounting housing of the clamping assembly, and its interior accommodates the core components of the clamping assembly and provides a relatively closed and stable working environment for these components, thereby reducing the interference of external factors on the clamping operation. The middle of the housing 6 is threadedly connected with a lead screw 20. When the lead screw 20 is rotated, the lead screw 20 can move linearly in the axial direction within the housing 6. The opposite side of each of the two lead screws 20 is fixedly connected with a clamping block 21. The clamping block 21 and the lead screw 20 form an integral structure and move synchronously with the movement of the lead screw 20. The clamping block 21 is externally clamped with two sliding plates 22. When the lead screw 20 moves the clamping block 21, the clamping block 21 pushes or pulls the sliding plates 22, so that the two sliding plates 22 are relatively close to or far away from each other within the housing 6, thereby realizing the clamping or loosening action of the brake hose. The sliding plate 22 is internally provided with a protection assembly, which can effectively protect the outer wall of the hose from being scratched, extruded and deformed, etc. when clamping the brake hose.

[0037] With reference to Figure 7 The protection assembly comprises a connecting rod 24, which is slidably connected to the inside of the sliding plate 22. The sliding connection allows the connecting rod 24 to be self-adaptively adjusted according to the actual shape and size of the brake hose. One end of the connecting rod 24 is fixedly connected with a blocking block 23, which can limit the sliding range of the connecting rod 24 and prevent the connecting rod 24 from disengaging from the internal structure of the sliding plate 22 during the sliding process. One end of the connecting rod 24 is fixedly connected with an arc-shaped clamping plate 26. The arc-shaped clamping plate 26 is directly in contact with the brake hose. Its arc-shaped design can better fit the outer wall contour of the hose, increasing the contact area. The side of the blocking block 23 away from the connecting rod 24 is fixedly connected with a second spring 25, which provides the protection assembly with an elastic buffering function. When the arc-shaped clamping plate 26 contacts the brake hose and exerts a clamping force, the second spring 25 will be compressed, storing elastic potential energy, thereby effectively buffering the impact of the clamping force on the hose and preventing the hose from being damaged due to excessive clamping force. At the same time, during the loosening of the clamping, the elastic restoring force of the second spring 25 can help the arc-shaped clamping plate 26 quickly recover to the initial position, improving the operation efficiency of the clamping assembly. The inner wall of the sliding plate 22 is fixedly connected with a limiting rod 27, and the inner wall of the blocking block 23 is slidably connected to the outer wall of the limiting rod 27. The limiting rod 27 cooperates with the blocking block 23 to further limit the sliding path of the blocking block 23, so that the connecting rod 24 and the arc-shaped clamping plate 26 can only move within a predetermined range, ensuring the accuracy and stability of the protection assembly during operation.

[0038] With reference to Figure 1 and Figure 5The limiting assembly comprises a limiting frame 30 fixedly connected to the front portion of the outer wall of the fixing frame 2, and the limiting frame 30 serves as the main frame of the limiting assembly and is fixedly connected to the front portion of the outer wall of the fixing frame 2 and has sufficient strength and stability to withstand various forces and impacts generated during the movement of the mounting plate 5. The limiting frame 30 is internally slidably connected with a sliding block 19, and the end of the sliding block 19 away from the limiting frame 30 is fixedly connected to the outer wall of the mounting plate 5. When the mounting plate 5 moves up and down under the drive of the first motor 3 and the first threaded rod 4, the movement track of the mounting plate 5 is strictly limited within the straight line range defined by the limiting frame 30 through the cooperation of the sliding block 19 and the limiting frame 30, which effectively prevents the abnormal conditions such as deviation and shaking of the mounting plate 5 due to uneven force and vibration and the like, ensures the stability and accuracy of the brake hose stretching process, and improves the reliability and repeatability of the test results.

[0039] With reference to Figure 6 The rear portion of the sliding plate 22 is fixedly connected with a sliding column 29, and the rear wall of the shell 6 is provided with two sliding grooves 28, and the outer wall of the sliding column 29 is slidably connected in the sliding grooves 28. When the sliding plate 22 moves relatively in the shell 6, the sliding column 29 slides in the sliding grooves 28. This structure design can further improve the stability and accuracy of the movement of the sliding plate 22, prevent the sliding plate 22 from twisting and jamming during the movement, and ensure the normal operation of the clamping assembly, so as to ensure that the clamping operation of the brake hose can be smoothly and stably carried out.

[0040] With reference to Figure 3 and Figure 4Two pipelines 18 are arranged inside the slide rod 12, and the pipelines 18 can be used as signal transmission channels or medium conveying channels. During the detection process, specific detection liquid or the like can be conveyed to the relevant part of the slide rod 12 through the pipelines 18, and the detection liquid or the like can contact or act on the brake hose, so that the detection of the performance of the hose is realized. The first spring 15 is fixedly connected to the inner wall of the cylinder 16 at the end away from the limiting plate 14, so as to ensure the stability of the first spring 15 during the working process, so that the first spring 15 can effectively exert the elastic restoring force, and when the first spring 15 is subjected to the force of the slide rod 12, the force can be uniformly transmitted to the cylinder 16, so as to avoid the spring failure or the normal operation of the detection assembly due to unstable connection. The stopper is installed inside the cylinder 16, which can be used to limit the movement range of some components in the cylinder 16, for example, to prevent the slide rod 12 from damaging other structures inside the cylinder 16 when the slide rod 12 is excessively displaced, and to separate different space areas inside the cylinder 16, so that different detection media or components can normally work in their respective areas without interfering with each other. The supplement opening is arranged at the top of the cavity 17, which facilitates the addition or adjustment of the detection medium in the cavity 17 before or during the detection. The through hole is arranged on the side of the cavity 17 close to the slide rod 12, so that the medium in the cavity 17 can interact with the slide rod 12 and the brake hose in contact with the slide rod 12.

[0041] With reference to Figure 7 The inner wall of the arc-shaped clamping plate 26 is corrugated, and the corrugated design can increase the friction between the arc-shaped clamping plate 26 and the brake hose, so as to prevent the hose from slipping off the clamping position. The second spring 25 is fixedly connected to the inner wall of the sliding plate 22 at the end away from the stopper 23, so as to ensure the position stability of the second spring 25 during the working process, so that the second spring 25 can stably exert the elastic buffering effect, and during the extension and contraction of the spring, the force can be uniformly transmitted to the sliding plate 22, so as to avoid the spring failure or the influence on the overall performance of the protection assembly due to the loosening or instability of the connection position.

[0042] With reference to Figure 5 The two baffles are fixedly connected to the front wall of the shell 6, and the baffles are used to limit the sliding plate 22. The knob is fixedly connected to the top end of the lead screw 20, and the knob facilitates the manual rotation operation of the lead screw 20 by the operator.

[0043] Working principle: when the brake hose needs to be stretched for performance testing, the two ends of the brake hose are respectively placed in the middle of the two housings 6, and the screw rod 20 is rotated, the clamping block 21 is slid downward, and the sliding plate 22 is further slid downward, when the two sliding plates 22 slide downward, the gap between the two sliding plates 22 will be reduced, thereby realizing clamping of the brake hose, during clamping, the screw rod 20 does not need to be completely rotated, the blocking block 23 can be slid by the elastic force of the second spring 25, the connecting rod 24 is further slid, the arc-shaped clamping plate 26 is slid to fix the brake hose, which can effectively reduce the damage to the brake hose caused by clamping, when the brake hose is fixed, the first motor 3 is powered, the first motor 3 is rotated, the first threaded rod 4 is rotated, the mounting plate 5 is moved, thereby realizing stretching of the brake hose, when the brake hose is stretched, the first motor 3 is powered off, the second motor 8 is powered on, the second threaded rod 9 is rotated, the fixed plate 10 is slid, the circular ring 11 is further slid, the surface of the brake hose is detected by the taper block 13 during sliding of the circular ring 11, when the brake hose is concave, the limiting plate 14 is slid by the elastic force of the first spring 15, the sliding rod 12 is slid downward, at this time, the marking liquid in the left cavity 17 flows out through the pipeline 18 and is marked, when a protrusion is encountered, the right cavity 17 is marked.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A device for testing the tensile properties of a brake hose, comprising a base plate (1), characterised in that: The bottom plate (1) top fixedly connected with the fixed frame (2), the fixed frame (2) top fixedly connected with the first motor (3), the first motor (3) output fixedly connected with the first threaded rod (4), the first threaded rod (4) outer wall threadedly connected with the mounting plate (5), the mounting plate (5) bottom and the bottom plate (1) top are provided with clamping assembly, the fixed frame (2) front left side is provided with detection assembly, the fixed frame (2) front right side is provided with restriction assembly; The detection assembly includes a mounting frame (7), the mounting frame (7) is fixedly connected to the outer wall of the fixed frame (2), the mounting frame (7) top fixedly connected with the second motor (8), the second motor (8) output fixedly connected with the second threaded rod (9), the second threaded rod (9) outer wall threadedly connected with the fixed plate (10), the fixed plate (10) outer wall fixedly connected with the circular ring (11), the circular ring (11) inside is slidably connected with a plurality of slide rods (12), the circular ring (11) outer wall fixedly connected with a plurality of cylinder (16), one side of the slide rod (12) is fixedly connected with the taper block (13), the other side of the slide rod (12) is fixedly connected with the limit plate (14), the limit plate (14) away from the slide rod (12) side is fixedly connected with the first spring (15), the cylinder (16) is internally provided with two cavities (17).

2. A brake hose tensile property testing device according to claim 1, characterized in that: The clamping assembly includes two housings (6), two housings (6) are respectively installed on the mounting plate (5) bottom and the bottom plate (1) top, the housing (6) middle screw threadedly connected with the lead screw (20), the opposite side of the two lead screws (20) is fixedly connected with the clamping block (21), the clamping block (21) is clamped with two sliding plates (22), the sliding plate (22) is provided with a protection assembly.

3. A brake hose tensile property testing device according to claim 2, wherein: The protection assembly includes a connecting rod (24), the connecting rod (24) is slidably connected in the sliding plate (22), one end of the connecting rod (24) is fixedly connected with the blocking block (23), one end of the connecting rod (24) is fixedly connected with the arc clamping plate (26), the blocking block (23) away from the connecting rod (24) side is fixedly connected with the second spring (25), the sliding plate (22) inner wall is fixedly connected with the limit rod (27), the blocking block (23) is slidably connected in the outer wall of the limit rod (27).

4. The brake hose tensile property testing device of claim 1, wherein: The restriction assembly includes a limit frame (30), the limit frame (30) is fixedly connected to the outer wall of the front of the fixed frame (2), the limit frame (30) is slidably connected with a sliding block (19), the sliding block (19) is fixedly connected to the outer wall of the mounting plate (5) away from the limit frame (30) one end.

5. A brake hose tensile property testing device as claimed in claim 2, wherein: The sliding plate (22) rear fixedly connected with the slide column (29), the housing (6) rear wall is provided with two slide grooves (28), the slide column (29) outer wall is slidably connected in the slide groove (28).

6. A brake hose tensile property testing device as defined in claim 1, wherein: The slide rod (12) is internally provided with two pipelines (18), one end of the first spring (15) away from the limiting plate (14) is fixedly connected to the inner wall of the barrel (16), the barrel (16) is internally provided with a stopper, the top of the cavity (17) is provided with a supplement opening, and the side, close to the slide rod (12), of the cavity (17) is provided with a through hole.

7. A device for testing the tensile properties of a brake hose according to claim 3, characterized in that: The inner wall of the arc-shaped clamping plate (26) is corrugated, and one end of the second spring (25) away from the blocking block (23) is fixedly connected to the inner wall of the sliding plate (22).

8. A brake hose tensile property testing device as defined in claim 3, wherein: The shell (6) is fixedly connected with two baffle plates on the front wall, and the screw rod (20) is fixedly connected with a rotating handle at the top.

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