CN114279866A - Test equipment for testing shear strength of automobile disc brake lining - Google Patents
Test equipment for testing shear strength of automobile disc brake lining Download PDFInfo
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- CN114279866A CN114279866A CN202111511168.5A CN202111511168A CN114279866A CN 114279866 A CN114279866 A CN 114279866A CN 202111511168 A CN202111511168 A CN 202111511168A CN 114279866 A CN114279866 A CN 114279866A
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Abstract
The invention provides test equipment for testing the shear strength of an automobile disc brake lining, which comprises a positive pressure loading mechanism and a shear force loading mechanism, wherein the positive pressure loading mechanism is used for applying positive pressure to the brake lining to fix the brake lining, and the shear force loading mechanism is used for pushing a friction material layer from the side to realize the separation of a steel back plate and the friction material layer. The invention has the beneficial effects that: a test device for testing the shear strength of an automobile disc brake lining can effectively simplify the test process and reduce the test preparation time on the basis of meeting the national basic test specification of the shear strength of the automobile disc brake lining.
Description
Technical Field
The invention belongs to the field of test equipment for the shear strength of an automobile disc brake lining, and particularly relates to test equipment for the shear strength of the automobile disc brake lining.
Background
As one of the most important components of an automotive disc brake system, an automotive disc brake lining is most directly applied to the process of generating friction force to decelerate an automobile. Generally, a disc brake lining is manufactured by mixing a plurality of chemical substances, pouring the mixture into a mold, pressing the mixture into a friction material layer, and then tightly combining the friction material layer with a steel back plate through a hot-press forming stage.
The currently used equipment for testing the shear strength of the disc brake lining generally adopts other equipment for tension and compression test projects, meets the requirements of test conditions by manufacturing a proper clamp, and has the disadvantages of difficult fixation of the lining during the test, time and labor waste and higher cost. It is therefore necessary to develop special equipment for the brake lining shear strength test.
Disclosure of Invention
In view of this, the invention aims to provide a test device for testing the shear strength of an automobile disc brake lining, which is a special device designed by referring to the requirements of relevant national standards on test devices and test processes aiming at the shear strength test items of the automobile disc brake lining, and can meet the relevant requirements of the standards, simplify the test processes and reduce the test cost.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the test equipment for the shear strength test of the automobile disc brake lining comprises a steel back plate and a friction material layer, wherein the friction material layer is fixedly connected with the steel back plate, the preferable friction material layer is in bonding connection with the steel back plate, the test equipment comprises a positive pressure loading mechanism and a shear force loading mechanism, the positive pressure loading mechanism is used for applying force to the steel back plate to fix the brake lining, the preferable positive pressure is applied to the brake lining, and the shear force loading mechanism is used for pushing the friction material layer from the side to realize the separation of the steel back plate and the friction material layer.
Furthermore, the device also comprises a device body, and the shearing force loading mechanism and the positive pressure loading mechanism are detachably connected to the device body.
Further, the positive pressure loading mechanism comprises a placing plate and a first power unit, the brake lining is horizontally placed on the placing plate, and the first power unit applies positive force to the brake lining located below the brake lining, so that the brake lining is fixed.
Further, the first power unit comprises a first lifting screw rod and a positive pressure loading pressing block, and a pressing head part for pressing the brake lining is arranged at the bottom of the positive pressure loading pressing block;
the fixing bracket is matched with the first lifting screw rod and is provided with an internal thread hole matched with the first lifting screw rod;
the fixed bracket is connected with a supporting base of the positive pressure loading mechanism through a supporting rod;
and a pressure sensor is also arranged between the first lifting screw rod and the positive pressure loading pressing block and is connected with the control module.
Further, the positive pressure loading mechanism further comprises a first height adjusting unit for adjusting the height of the placing plate;
the first height adjusting unit comprises a second lifting screw rod and a test bed, and the test bed is fixedly connected with the placing plate;
the test bed is provided with an internal thread hole matched with the second lifting screw rod, a fixed support matched with the second lifting screw rod is arranged on a supporting base of the positive pressure loading mechanism, and the fixed support is provided with an internal thread hole matched with the second lifting screw rod.
Furthermore, the placing plate is provided with a limiting body for fixing the brake lining, and the limiting body is used for preventing the brake lining from moving on the placing plate;
the spacing body is including setting up the filler strip on placing the board.
Further, the shearing force loading mechanism comprises a second power unit and a shearing force loading pressing block, and the second power unit is used for driving the shearing force loading pressing block to apply force to the friction material layer from the side.
Furthermore, the second power unit comprises a servo motor, a speed reducer and a bevel gear reversing mechanism which are sequentially arranged, and the output end of the bevel gear reversing mechanism is connected with a coupler;
the bevel gear reversing mechanism is characterized by also comprising a ball screw, wherein the first end of the ball screw is connected with the output end of the bevel gear reversing mechanism through a coupler;
the sliding table structure is matched with the ball screw and is provided with a ball sliding block matched with the ball screw;
the sliding table structure comprises a second mounting fixture and a first mounting fixture, wherein one end of the load sensor is connected with the second mounting fixture, and the other end of the load sensor is connected with the first mounting fixture;
and the shearing force loading pressing block is arranged on the second mounting fixture.
Furthermore, a driven shaft seat is arranged at the first end of the ball screw, which is far away from the second power unit, a driven bearing is arranged in the driven shaft seat, the first end of the ball screw is rotatably connected with the driven shaft seat, and the driven shaft seat is fixedly connected with the equipment body;
and one end of the ball screw, which is close to the second power unit, is also provided with a thrust shaft seat, a thrust bearing is arranged in the thrust shaft seat, and the second end of the ball screw is rotatably connected with the thrust shaft seat.
Furthermore, the ball sliding block is arranged below the first mounting fixture, the ball sliding block is fixedly connected with the first mounting fixture, and the ball screw drives the sliding table structure to move through driving the ball sliding block located below the first mounting fixture.
Compared with the prior art, the test equipment for the shear strength test of the automobile disc brake lining has the following beneficial effects:
(1) the test equipment for the shear strength test of the automobile disc brake lining can effectively simplify the test process and reduce the test preparation time on the basis of meeting the national basic test specification of the shear strength of the automobile disc brake lining;
(2) according to the test equipment for the shear strength test of the automobile disc brake lining, data processing can be automatically carried out after test sample parameters are input before a test, so that the time cost for manually processing data is saved;
(3) the test equipment for the shear strength test of the automobile disc brake gasket can obviously reduce the material consumption of a test fixture, simplify the machining process and effectively reduce the test cost;
(4) the test equipment for the shear strength test of the automobile disc brake lining has the advantages of portability, adaptability to various working scenes and effective protection measures for preventing accidental injury to testers.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure according to the embodiment of the present invention;
FIG. 2 is a plan view illustration of a shear loading mechanism according to an embodiment of the present invention;
FIG. 3 is a perspective view of a shear force loading mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic plan view of a positive pressure loading mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a positive pressure loading mechanism according to an embodiment of the present invention;
fig. 6 is a schematic view of a brake lining according to an embodiment of the present invention.
Description of reference numerals:
1-equipment body; 2-a shear force loading mechanism; 3-a positive pressure loading mechanism; 4-equipment workbench; 5-an aluminum profile; 6-thin steel plate; 7-keyboard mouse rack; 8-bottom walking universal wheels; 9-a servo motor; 10-a speed reducer; 11-a thrust bearing; 12-a driven bearing; 13-ball screw; 14-a support mechanism; 15-bevel gear reversing mechanism; 16-a coupling; 17-a thrust shaft seat; 18-a mandrel; 19-a first mounting fixture; 20-copper sheathing; 21-a load cell; 22-a second mounting fixture; 23-a shear force loading briquette; 24-driven shaft seat; a 25-U shaped block; 26-a linear guide rail; 27-a slide block; 28-a displacement sensor; 29-hand wheel; 30-fixing a support; 31-a support base; 32-a second lifting screw rod; 33-test stand; 34-a handle; 35-a fixed support; 36-a first lifting screw rod; 37-a pressure sensor; 38-positive pressure loading of the compact; 39-steel backing plate; 40-a friction material layer; 41-filler strip.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The main effect of this scheme is, through setting up positive pressure loading mechanism and shearing force loading mechanism, be used for compressing tightly and the application of force to brake lining and friction material layer respectively, the concrete structure of brake lining is as shown in figure 6, concrete brake lining (compressing tightly friction material layer and steel backplate simultaneously) downwards compresses tightly through positive pressure loading mechanism, rethread shearing force loading mechanism promotes the friction material layer from side, because filler strip 41 has blocked the steel backplate that is located the below this moment, consequently, the steel backplate can not remove, promote the friction material layer from side through shearing force loading mechanism, because for modes such as bonding between steel backplate and the friction material layer, when the application of force is enough big, can realize the separation of the two, the application of force size when gathering the separation through the load sensor in this scheme.
The positive pressure loading mechanism is provided with a pressure sensor, the shearing force loading mechanism is provided with a load sensor, the sensor is connected with a control system, the control system can be a computer or other existing equipment with a collecting function, the pressing force and the shearing force from the side can be collected through the sensor, the fixing strength between the steel back plate and the friction material layer is tested, and a foundation is provided for subsequent research and testing.
A test device for testing the shear strength of an automobile disc brake lining structurally comprises: the device comprises a device body 1, a shearing force loading mechanism 2 and a positive pressure loading mechanism 3. The shearing force loading mechanism 2 and the positive pressure loading mechanism 3 are arranged on a workbench inside the equipment body 1 through bolts.
The equipment organism 1 is equipped with bottom walking universal wheel 8, bottom walking universal wheel 8 passes through the even equidistance of bolt and connects in equipment organism 1 bottom, equipment organism 1 outside is connected through the bolt by aluminium alloy 5 and sheet steel 6 and constitutes equipment organism 1 shell, equipment organism 1 outside is connected through the aluminium alloy 5 of bolt and equipment organism 1 shell by sheet steel 6, constitutes keyboard mouse frame 7. Two upper and lower cavitys are divided into by equipment workstation 4 to equipment organism 1 is inside, equipment workstation 4 passes through angle bar and bolt by the steel sheet of certain thickness and is connected with the aluminium alloy 5 of equipment organism 1 shell, and 4 upper portion cavitys of equipment workstation are the workspace, workspace one side is left the window so that the operation, and the window so that computer screen installation and demonstration also are left to the opposite side, 4 lower part cavitys of equipment workstation are equipment annex district.
The shearing force loading mechanism 2 is provided with a servo motor 9, a speed reducer 10, a bevel gear reversing mechanism 15, a supporting mechanism 14, a coupler 16, a ball screw 13 (provided with a ball slider corresponding to the ball screw, the ball slider can be arranged below a load sensor mounting fixture, namely a first fixture, a load sensor or a shearing force loading press block mounting fixture, namely a second fixture, which is not described herein for the prior art, and has the function of ensuring that the components can be driven by the ball screw to slide), a thrust bearing 11, a thrust shaft seat 17, a driven shaft bearing 12 and a driven shaft seat 24, the device comprises a U-shaped block 25, a copper sleeve 20, a mandrel 18, a first mounting clamp 19 (namely a load sensor mounting clamp), a sliding block 27, a linear guide rail 26, a load sensor 21, a displacement sensor 28, a second mounting clamp 22 (namely a shearing force loading press block mounting clamp) and a shearing force loading press block 23.
The servo motor 9 is connected with a speed reducer 10 through bolts, the speed reducer 10 changes the motion direction through a bevel gear reversing mechanism 15 and is connected with a ball screw 13 through a coupler 16, a supporting mechanism 14 composed of a rib plate and a steel plate of the bevel gear reversing mechanism 15 is fixed on an equipment workbench 4 through bolts, the ball screw 13 is positioned through a thrust bearing 11 and a driven bearing 12, the thrust bearing 11 is installed on a thrust shaft seat 17, the upper part of the thrust shaft seat 17 is a steel plate, the lower part of the thrust shaft seat 17 is a semicircular steel block, the upper steel plate is installed on the equipment workbench 4 through bolts, the thrust bearing 11 is installed in the middle of the semicircular steel block at the lower part, the driven bearing 12 is installed on a driven shaft seat 24, the driven shaft seat 24 is in a rectangular block shape and is installed on a U-shaped block 25 at the bottom through bolts, the driven bearing 12 is installed in the middle of the semicircular steel block, the U-shaped block 25 is mounted at the bottom of the equipment workbench 4 through bolts. The shear force loading pressing block 23 is connected with the second mounting fixture 22 through bolts, the shear force loading pressing block 23 can be designed and replaced according to the appearance of the friction material layer of the brake lining, the second mounting fixture 22 is formed by connecting two steel plates through bolts, the two steel plates are vertical, the joint is supported by reinforcing plates, the second mounting fixture 22 is connected with two mandrels 18 through bolts, meanwhile, the second mounting fixture 22 is connected with a load sensor 21 through a connecting flange, the load sensor 21 is disc-shaped and is mounted on the first mounting fixture 19 through bolts, the first mounting fixture 19 is formed by two rectangular steel plates, one rectangular steel plate is vertical to the equipment workbench 4 and is directly connected with the load sensor 21 through bolts, the other rectangular steel plate is parallel to the equipment workbench 4, two copper sleeves 20 are connected on the rectangular steel plate through bolts, and is fixed on two sliding blocks 27 through bolts, the joint of the two rectangular steel plates is provided with a rib block for reinforcing and supporting, and the middle part of the copper sleeve 20 passes through the mandrel 18. The slide block 27 is connected with the linear guide rail 26 and moves along the linear guide rail 26, and the linear guide rail 26 is mounted on the equipment workbench 4 through bolts. And displacement sensors 28 are arranged on the side surfaces of the two sliding blocks 27, and the displacement sensors 28 are in a long strip shape and are fixed on the equipment workbench 4 through bolts.
The positive pressure loading mechanism 3 is provided with a positive pressure loading pressing block 38, a pressure sensor 37, a first lifting screw rod 36, a fixed support 35, a handle 34, a supporting base 31, a fixed support 30, a hand wheel 29, a second lifting screw rod 32 and a test bed 33. The positive pressure loading pressing block 38 is in a frame shape, the lower side of the positive pressure loading pressing block is embedded into the two side frames through two round shafts through bearings, so that stress deformation cannot be generated when the shearing force is loaded, the positive pressure loading pressing block 38 is connected with the pressure sensor 37 through bolts, the pressure sensor 37 is connected with the first lifting screw rod 36 through a bolt, the first lifting screw rod 36 is fixed and changed in position through the fixing bracket 35, the handle 34 is installed on the upper part of the fixing bracket 35, the fixing bracket 35 is fixed on the supporting base 31 through bolts, the fixing bracket 35 is provided with a support rod connected with a first fastening block, the upper part of the support rod is in a step shape, the first fastening block can fasten the second fastening block arranged in the opening of the first fastening block through a bolt, the first lifting screw rod 36 is arranged in the opening of the second fastening block, and the second fastening block can fasten the first lifting screw rod 36 through the bolt. The supporting base 31 is composed of two steel plates and a rib plate at the joint of the two steel plates, one steel plate is horizontally arranged and installed on the equipment workbench 4 through a bolt, and the other steel plate is vertically installed on the steel plate through a bolt. The supporting base 31 is installed through bolts on the fixing support 30, the fixing support 30 is installed horizontally, the middle of the fixing support is provided with a hole, the second lifting screw rod 32 and the upper portion of the second lifting screw rod 32 are installed, the hand wheel 29 is installed on the lower portion of the second lifting screw rod 32 and is connected with the test bed 33 through threads, the test bed 33 is composed of a steel plate and a plate, the steel plate is horizontally arranged, the steel plate is used for placing a brake lining sample, the groove of the side panel part of the test bed 33 is convenient to adjust the height of the test bed 33 through the hand wheel 29 and the second lifting screw rod, the test bed 33 is fixed to the side face of the supporting base 31 through bolts, and the upper portion of the plate is provided with a threaded hole connected with the second lifting screw rod.
When the test equipment for testing the shearing strength of the disc brake lining of the automobile works, the equipment body 1 is arranged, and the walking universal wheels are arranged at the bottom of the equipment body 1, so that the requirements of various working scenes can be met.
By arranging the shearing force loading mechanism 2, the shearing force loading mechanism 2 is provided with the servo motor 9, the speed reducer 10, the ball screw 13 and the thrust bearing 11, and when the servo motor 9 works after being electrified, the ball screw 13 drives the shearing force loading pressing block 23 which is matched with the peripheral profile of the brake lining sample and is parallel to the back plate supporting surface to work.
The positive pressure loading mechanism 3 is provided with a handle 34, a first lifting screw rod 36, a fixing support 35, a second lifting screw rod 32 and a test bed 33, the handle 34 drives the first lifting screw rod 36 to move up and down to apply positive pressure to the brake lining, and the height of the test bed 33 is adjusted through the second lifting screw rod to meet the requirement that the thickness of a rigid support at the load bearing edge of the brake lining backboard is not more than the thickness of the backboard.
The present invention will be further described with reference to specific embodiments in order to make the technical means, the original characteristics, the achieved objects and the effects of the present invention easy to understand and understand.
Referring to fig. 1 to 5, the present invention provides a technical solution of a testing apparatus for testing the shear strength of an automobile disc brake pad: before a test, a shearing force loading pressing block 23 matched with the periphery profile of a tested disc type brake lining is prepared according to the periphery profile of the tested disc type brake lining and is connected with a fixed support 30 through a bolt, a ball screw 13 is driven through a servo motor 9 and a speed reducer 10, the shearing force loading pressing block 23 moves to a reasonable distance from the edge of a tested brake lining back plate, a second lifting screw is driven through a rotating hand wheel 29 to adjust the height of a test bench 33, the shearing force loading pressing block 23 completely covers the side profile of the tested brake lining and does not interfere with the brake lining back plate, and meanwhile, a bearing block with the thickness not larger than the thickness of the bearing block is arranged at the load bearing edge of the brake lining back plate.
In order to prevent the brake lining to be tested from moving in the testing process, a positive pressure loading mechanism 3 is required to apply a positive pressure perpendicular to the shearing force to the brake lining to be tested, the handle 34 is rotated to drive the first lifting screw to control the lifting of the positive pressure loading pressing block 38, and the pressure sensor 37 is used for feeding back a real-time pressure value to control the magnitude of the loaded positive pressure.
In the test process, the servo motor 9 drives the shearing force loading pressing block 23 to move through the speed reducer 10, the ball screw 13, the thrust bearing 11 and the driven bearing 12, the shearing force is applied to the tested brake lining, and the real-time shearing force value, especially the instantaneous failure shearing force value, is recorded through the load sensor 21. And simultaneously, a displacement sensor 28 arranged on the side surface of the slide block 27 records the displacement amount and the loading speed data of the shearing force loading pressing block 23. The magnitude of the shear strength can be calculated according to the failure shear force and the friction area of the brake lining.
Those of ordinary skill in the art will appreciate that the elements and method steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of clearly illustrating the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed method and system may be implemented in other ways. For example, the above described division of elements is merely a logical division, and other divisions may be realized, for example, multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not executed. The units may or may not be physically separate, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A test device for testing the shear strength of an automobile disc brake lining, wherein the brake lining comprises a steel back plate (39) and a friction material layer (40), the friction material layer (40) is fixedly connected with the steel back plate (39), and the test device is characterized in that: the brake lining separating device comprises a positive pressure loading mechanism (3) and a shearing force loading mechanism (2), wherein the positive pressure loading mechanism (3) is used for applying force to a steel back plate (39) to fix a brake lining, and the shearing force loading mechanism (2) is used for pushing a friction material layer (40) from the side to separate the steel back plate (39) from the friction material layer (40).
2. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 1, characterized in that: the equipment is characterized by further comprising an equipment body (1), wherein the shearing force loading mechanism (2) and the positive pressure loading mechanism (3) are detachably connected to the equipment body (1).
3. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 1, characterized in that: the positive pressure loading mechanism (3) comprises a placing plate and a first power unit, the brake lining is horizontally placed on the placing plate, and the first power unit applies positive force to the brake lining located below the brake lining to fix the brake lining.
4. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 3, characterized in that: the first power unit comprises a first lifting screw rod (36) and a positive pressure loading pressing block (38), and a pressing head part for pressing the brake lining is arranged at the bottom of the positive pressure loading pressing block (38);
the lifting mechanism further comprises a fixing support (35) matched with the first lifting screw rod (36), and the fixing support (35) is provided with an internal threaded hole matched with the first lifting screw rod (36);
the fixed bracket (35) is connected with a supporting base (31) of the positive pressure loading mechanism (3) through a supporting rod;
and a pressure sensor (37) is also arranged between the first lifting screw rod (36) and the positive pressure loading pressing block (38), and the pressure sensor (37) is connected with the control module.
5. A test apparatus for the shear strength test of an automotive disc brake pad according to claim 4, characterized in that: the positive pressure loading mechanism (3) also comprises a first height adjusting unit for adjusting the height of the placing plate;
the first height adjusting unit comprises a second lifting screw rod (32) and a test bench (33), and the test bench (33) is fixedly connected with the placing plate;
the test bed (33) is provided with an internal thread hole matched with the second lifting screw rod (32), a fixed support (30) matched with the second lifting screw rod (32) is arranged on the supporting base (31) of the positive pressure loading mechanism (3), and the fixed support (30) is provided with an internal thread hole matched with the second lifting screw rod (32).
6. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 3, characterized in that: the placing plate is provided with a limiting body for fixing the brake lining, and the limiting body is used for preventing the brake lining from moving on the placing plate;
the spacing body comprises a filler strip (41) arranged on the placing plate.
7. A test apparatus for shear strength testing of an automotive disc brake pad according to any one of claims 1 or 2, characterized in that: the shearing force loading mechanism (2) comprises a second power unit and a shearing force loading pressing block (23), and the second power unit is used for driving the shearing force loading pressing block (23) to apply force to the friction material layer (40) from the side.
8. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 7, characterized in that: the second power unit comprises a servo motor (9), a speed reducer (10) and a bevel gear reversing mechanism (15) which are sequentially arranged, and the output end of the bevel gear reversing mechanism (15) is connected with a coupler (16);
the bevel gear reversing mechanism further comprises a ball screw, wherein the first end of the ball screw is connected with the output end of the bevel gear reversing mechanism (15) through a coupler (16);
the sliding table structure is matched with the ball screw, and a ball sliding block (27) matched with the ball screw is arranged on the sliding table structure;
the sliding table structure comprises a second mounting clamp (22) and a first mounting clamp (19), one end of the load sensor (21) is connected with the second mounting clamp (22), and the other end of the load sensor is connected with the first mounting clamp (19);
the shear force loading pressing block (23) is installed on the second installation clamp (22).
9. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 8, characterized in that: a driven shaft seat (24) is arranged at the first end of the ball screw, which is far away from the second power unit, a driven bearing (12) is arranged in the driven shaft seat (24), the first end of the ball screw is rotatably connected with the driven shaft seat (24), and the driven shaft seat (24) is fixedly connected with the equipment body (1);
one end of the ball screw, which is close to the second power unit, is also provided with a thrust shaft seat (17), a thrust bearing (11) is arranged in the thrust shaft seat (17), and the second end of the ball screw is rotatably connected with the thrust shaft seat (17).
10. A test apparatus for shear strength testing of an automotive disc brake pad according to claim 8, characterized in that: ball slider (27) set up in the below of first sectional fixture (19), ball slider and first sectional fixture fixed connection, and ball screw (13) drive the motion of slip table structure through ball slider (27) that the drive is located first sectional fixture (19) below.
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| CN202111511168.5A CN114279866B (en) | 2021-12-01 | 2021-12-01 | Test equipment for testing shearing strength of automobile disc brake lining |
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| CN202111511168.5A CN114279866B (en) | 2021-12-01 | 2021-12-01 | Test equipment for testing shearing strength of automobile disc brake lining |
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| CN114279866B CN114279866B (en) | 2023-08-25 |
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| CN112611638A (en) * | 2020-12-24 | 2021-04-06 | 石家庄铁道大学 | Frozen soil pulling and shearing integrated tester |
| CN213779755U (en) * | 2020-12-25 | 2021-07-23 | 重庆红宇摩擦制品有限公司 | Device for testing shear strength of disc brake block |
| CN112857992A (en) * | 2020-12-31 | 2021-05-28 | 中国汽车技术研究中心有限公司 | Simulation calibration method for mechanical properties of carbon fiber material |
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