A test bench for servo brake testing

Abstract

The present invention relates to a servo brake testing test bench applied in the technical field of servo brake performance testing, comprising an experimental platform, an experimental motor, a servo brake to be tested, a motor shaft, a loading bracket, a loading shaft group, a loading disk, a shaft cylinder, a linkage shaft rod, a series shaft rod, a linkage rib and a linkage groove. During the experiment, the present invention realizes the sleeve connection of the shaft cylinder on the linkage shaft rod and the series shaft rod by pushing and pulling the linkage shaft rod and the series shaft rod. When the linkage shaft rod is sleeved with the shaft cylinder, the linkage shaft rod drives the shaft cylinder to rotate through the sliding connection of the linkage groove and the linkage rib, thereby realizing the control of the linkage rotation of the loading disk. When the series shaft rod is sleeved with the shaft cylinder, there is no transmission relationship between the series shaft rod and the shaft cylinder. The series shaft rod only provides support capacity for the shaft cylinder, thereby realizing automatic adjustment of the experimental loading condition of the loading disk, and effectively improving the operating efficiency of the servo brake experiment.

Description

Technical Field

[0001] The present invention relates to a test bench, in particular to a test bench for servo brake detection applied to the technical field of servo brake performance detection. Background Art

[0002] A servo brake is an advanced braking device that combines servo control technology with traditional braking functions. Its core feature is its ability to achieve high-precision, fast-response braking based on precise control instructions, rather than simply switching and locking. Servo brakes undergo various performance tests before leaving the factory to ensure their quality.

[0003] Chinese patent CN114061974A discloses a "Brake Test Bench for Reliability Digital Twins." A servo motor starts the pulley system, which rotates. The electromagnetic clutch engages and disengages, controlling the drive shaft's rotation. The drive shaft transfers kinetic energy to the inertia flywheel, driving the rotating brake pad. An electric push rod, through axial feed motion, compresses and rubs the feed brake pad against the rotating brake pad until the pad stops relative motion, completing a braking simulation test. During the test, dynamic torque sensors, temperature sensors, and pressure sensors collect data in real time and input it into the control system. The test bench provides physical entities and real-time data for establishing a digital twin of brake pad reliability. Chinese patent CN209910896U discloses a "Servo Motor Inertia Test Device." The device consists of two inertia discs. Each set of inertia discs can be installed on the drive shaft simply by assembling and locking the pins. This device offers the advantages of fast installation and removal. By securing the inertia discs relative to the mounting bracket, it prevents them from sliding along the length of the drive shaft, reducing test errors.

[0004] In the prior art, when experimentally testing the performance of a servo brake, it is necessary to provide a corresponding torque load for the servo brake experiment. In order to improve the accuracy of the servo brake performance test results, multiple sets of torque load experiments need to be arranged. However, the torque load adjustment process is relatively complicated, resulting in low efficiency of manual adjustment and affecting the efficiency of the experimental operation. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the experimental torque load adjustment process is relatively complicated, resulting in low efficiency of manual adjustment and affecting the experimental operation efficiency.

[0006] In order to solve the above problems, the present invention provides a test bench for servo brake testing, comprising an experimental platform, a test motor is fixedly connected to the middle of the experimental platform, a servo brake to be tested is fixedly connected to the tail of the experimental motor, a motor shaft is rotatably connected to the middle of the experimental motor, one end of the motor shaft is fixedly connected to the servo brake to be tested, the other end of the motor shaft is fixedly connected to a loading bracket, an end of the loading bracket away from the experimental motor is fixedly connected to a loading shaft group, an end of the loading shaft group away from the loading bracket is rotatably connected to a support seat, and an external fixed sleeve of the loading shaft group is provided with a loading disk, and the support seat is fixedly connected to the experimental platform;

[0007] The loading shaft group is composed of multiple shaft cylinders that are rotatably connected to each other. Each shaft cylinder corresponds to a loading plate. The middle part of the loading bracket is movably connected with a linkage shaft rod, and the middle part of the support seat is movably connected with a series shaft rod. The linkage shaft rod and the series shaft rod are both sleeved with the shaft cylinder, and the protruding end of the linkage shaft rod is rotatably connected with the protruding end of the series shaft rod. The outside of the linkage shaft rod is fixedly connected with a linkage rib. The inner wall of the shaft cylinder is provided with a linkage groove, and the linkage groove is slidably connected to the linkage rib.

[0008] In the above-mentioned test bench for servo brake testing, the loading disc is driven to rotate by the test motor, and then the braking test is carried out using the servo brake to be tested. During the experiment, the connection status of the linkage shaft and the series shaft with each shaft tube is adjusted to control whether the corresponding loading disc participates in the rotation linkage, and the experimental loading condition of the loading disc is automatically adjusted, thereby effectively improving the operational efficiency of the servo brake test.

[0009] As a further improvement of the present application, an electric push rod is fixedly connected to one end of the support seat away from the loading shaft group, and the output end of the electric push rod is fixedly connected to the series shaft rod. The electric push rod pushes and pulls the series shaft rod to realize the linkage shaft rod and the connection between the series shaft rod and the shaft cylinder.

[0010] As a further improvement of the present application, a buffer spring is fixedly connected between the end of the linkage shaft away from the series shaft and the loading bracket, and the electric push rod and the buffer spring are horizontally collinear. When the linkage shaft moves toward the loading bracket, the displacement stability of the linkage shaft is effectively improved through the deformation of the buffer spring.

[0011] As a further improvement of the present application, an assembly interface is provided between the middle and the edge of the loading plate. The assembly interface is U-shaped and is socketed with the shaft tube to achieve detachable socketing of the loading plate and the shaft tube, thereby facilitating replacement and installation of the loading plate.

[0012] As another improvement of the present application, plug-in blocks are fixedly connected at both ends of the internal part of the group interface, and plug-in grooves are provided at both ends of the surface of the shaft tube. The plug-in blocks are plugged into the plug-in grooves. By plugging the plug-in blocks into the plug-in grooves, the transmission connection between the shaft tube and the group interface is realized, and the rotational movement of the loading plate is realized.

[0013] As another improved supplement to the present application, a sealing plug is inserted into the open end of the assembly interface, and the sealing plug is fixedly connected to the loading plate by bolts. The outer end face of the sealing plug is arranged in an arc shape corresponding to the loading plate. The sealing plug closes the opening of the assembly interface, effectively preventing the opening of the assembly interface from affecting the rotational movement of the loading plate.

[0014] As another improved supplement to the present application, a space window is opened on the surface of the experimental platform vertically corresponding to the loading bracket and the loading shaft group, and a load-bearing platform is fixedly connected to the inside of the space window. The bottom of the loading disc is in rolling contact with the load-bearing platform, and the two ends of the load-bearing platform are fixedly connected to the left and right sides of the loading disc alternately corresponding to the loading disc. A magnetic block is fixedly embedded in the middle of the sealing plug, and the electromagnetic module and the magnetic block are magnetically attracted to each other. The opened space window provides space for the installation of the loading disc, and the load-bearing platform provides support for the rotation of the loading disc, effectively reducing the force on the loading shaft group, and when the loading disc is disconnected, the inertial motion of the loading disc is quickly stopped through the magnetic attraction ability of the electromagnetic module and the magnetic block, effectively avoiding the inertial motion of the loading disc affecting the experimental detection process.

[0015] As another improvement of the present application, the four corners of the top of the supporting platform are fixedly connected with support columns, and a limiting cover is fixedly connected between the tops of the four support columns. The top of the loading plate is in rolling contact with the limiting cover, and the limiting cover is used to provide limitation for the top of the loading plate, thereby effectively improving the stability of the loading plate in a high-speed rotation state.

[0016] To sum up, the present invention drives the loading bracket through the motor shaft of the experimental motor to realize the rotational movement of the loading disk on the loading shaft group, and then uses the servo brake to be tested to perform a braking test. During the experiment, the linkage shaft and the series shaft are pushed and pulled to adjust the socketing condition of the shaft cylinder on the linkage shaft and the series shaft. When the linkage shaft is socketed with the shaft cylinder, the linkage groove and the linkage rib are slidably connected to realize the linkage shaft driving the shaft cylinder to rotate, thereby realizing the linkage rotation of the loading disk. When the series shaft is socketed with the shaft cylinder, there is no transmission relationship between the series shaft and the shaft cylinder. The series shaft only provides support for the shaft cylinder, thereby realizing automatic adjustment of the experimental loading condition of the loading disk, and effectively improving the operating efficiency of the servo brake experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0018] Figure 2 This is a three-dimensional structural diagram of the motor shaft and the supporting shaft assembly according to the first embodiment of the present application;

[0019] Figure 3 This is a three-dimensional structural diagram of the shaft cylinder according to the first embodiment of the present application;

[0020] Figure 4This is a three-dimensional structural diagram of the shaft cylinder and the linkage shaft rod according to the first embodiment of the present application;

[0021] Figure 5 This is a three-dimensional structural diagram of the shaft cylinder and the serial shaft rod according to the first embodiment of the present application;

[0022] Figure 6 This is a three-dimensional structural diagram of the second embodiment of the present application with the supporting platform and the limiting cover installed;

[0023] Figure 7 This is a three-dimensional structural diagram of a loading tray according to a second embodiment of the present application;

[0024] Figure 8 This is a three-dimensional structural diagram of the supporting platform and the limiting cover according to the second embodiment of the present application;

[0025] Figure 9 This is a three-dimensional cross-sectional view of the electromagnetic module and the magnetic block according to the second embodiment of the present application;

[0026] Figure 10 This is a three-dimensional structural diagram of the supporting platform of the second embodiment of this application.

[0027] Description of the numbers in the figure:

[0028] 1. Experimental platform; 101. Experimental motor; 102. Servo brake to be tested; 103. Motor shaft; 104. Loading bracket; 105. Support seat; 2. Loading shaft group; 201. Shaft cylinder; 202. Linkage shaft; 203. Series shaft; 204. Linkage rib; 205. Linkage slot; 206. Electric push rod; 207. Buffer spring; 3. Loading plate; 301. Group interface; 302. Plug-in block; 303. Plug-in slot; 304. Sealing plug; 4. Space window; 401. Loading platform; 402. Electromagnetic module; 403. Magnetic block; 404. Bracket column; 405. Limiting cover. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1 and Figure 2FIG. 1 shows a test bench for servo brake testing, comprising an experimental platform 1, wherein an experimental motor 101 is fixedly connected to the middle of the experimental platform 1, a servo brake 102 to be tested is fixedly connected to the tail of the experimental motor 101, a motor shaft 103 is rotatably connected to the middle of the experimental motor 101, one end of the motor shaft 103 is fixedly connected to the servo brake 102 to be tested, and the other end of the motor shaft 103 is fixedly connected to a loading bracket 104, an end of the loading bracket 104 away from the experimental motor 101 is fixedly connected to a loading shaft group 2, an end of the loading shaft group 2 away from the loading bracket 104 is rotatably connected to a support base 105, and an outer fixed sleeve of the loading shaft group 2 is provided with a loading disc 3, and the support base 105 is fixedly connected to the experimental platform 1;

[0032] When conducting a braking performance test of the servo brake 102 to be tested, the servo brake 102 to be tested is fixed to the tail of the experimental motor 101, and the servo brake 102 to be tested is fixedly connected to the motor shaft 103 extending from the tail of the experimental motor 101. After the experimental motor 101 is started, the motor shaft 103 drives the loading bracket 104 to realize the rotational movement of the loading disk 3 on the loading shaft group 2, thereby providing a torque load for the braking test of the servo brake 102 to be tested.

[0033] Figures 1 to 5 As shown, the loading shaft group 2 is composed of a plurality of shaft cylinders 201 rotatably connected to each other, each shaft cylinder 201 corresponds to a loading disc 3 separately, the middle part of the loading bracket 104 is movably connected with a linkage shaft rod 202, and the middle part of the support seat 105 is movably connected with a series shaft rod 203, the linkage shaft rod 202 and the series shaft rod 203 are both sleeved with the shaft cylinder 201, and the insertion end of the linkage shaft rod 202 is rotatably connected with the insertion end of the series shaft rod 203, the outside of the linkage shaft rod 202 is fixedly connected with a linkage rib 204, the inner wall of the shaft cylinder 201 is provided with a linkage groove 205, the linkage groove 205 is slidably connected with the linkage rib 204, and the support seat 105 is away from One end of the loading shaft group 2 is fixedly connected to an electric push rod 206, and the output end of the electric push rod 206 is fixedly connected to the tandem shaft 203. The electric push rod 206 pushes and pulls the tandem shaft 203 to achieve the sleeve adjustment of the linkage shaft 202 and the tandem shaft 203 with the shaft cylinder 201. A buffer spring 207 is fixedly connected between the end of the linkage shaft 202 away from the tandem shaft 203 and the loading bracket 104. The buffer spring 207 and the electric push rod 206 are horizontally collinear. When the linkage shaft 202 moves toward the loading bracket 104, the deformation of the buffer spring 207 effectively improves the displacement stability of the linkage shaft 202;

[0034] When the experimental motor 101 drives the loading bracket 104 through the motor shaft 103 to realize the rotational movement of the loading disk 3 on the loading shaft group 2, according to the experimental requirements of the servo brake 102 to be tested, the electric push rod 206 pushes and pulls the serial shaft 203 to adjust the coupling shaft 202 and the coupling shaft 203 and the shaft cylinder 201. Specifically, when the coupling shaft 202 is coupled with the shaft cylinder 201, the sliding connection between the coupling groove 205 and the coupling rib 204 is realized to realize the coupling shaft 202 driving the shaft cylinder 201 to rotate, thereby realizing the linkage rotation of the loading disk 3. When the coupling shaft 202 leaves the shaft cylinder 201, the serial shaft 203 is coupled with the shaft cylinder 201, and the serial shaft 203 only provides support for the shaft cylinder 201, thereby realizing automatic adjustment of the experimental loading condition of the loading disk 3, that is, adjusting the rotation amount of the loading disk 3, and effectively improving the operating efficiency of the servo brake experiment.

[0035] The second implementation method:

[0036] Compared with the first embodiment, a new group interface 301 is added on the loading plate 3. The specific new structure is as follows. The remaining structures are consistent with the first embodiment.

[0037] Figure 6 and Figure 7 As shown, a group interface 301 is provided between the middle and the edge of the loading plate 3. The group interface 301 is U-shaped and is sleeved with the shaft cylinder 201 to realize the detachable sleeve connection between the loading plate 3 and the shaft cylinder 201, which is convenient for the replacement and installation of the loading plate 3. Both ends of the internal part of the group interface 301 are fixedly connected with a plug-in block 302. Both ends of the surface of the shaft cylinder 201 are provided with a plug-in groove 303. The plug-in block 302 is plugged into the plug-in groove 303. The plugging with the plug groove 303 realizes the transmission connection between the shaft cylinder 201 and the assembly interface 301, and realizes the rotation of the loading plate 3. The open end of the assembly interface 301 is plugged with a sealing plug 304. The sealing plug 304 is fixedly connected to the loading plate 3 by bolts, and the outer end surface of the sealing plug 304 is arranged in an arc shape corresponding to the loading plate 3. The sealing plug 304 seals the opening of the assembly interface 301, effectively preventing the opening of the assembly interface 301 from affecting the rotation of the loading plate 3.

[0038] The loading disc 3 is directly connected to the shaft cylinder 201 through the U-shaped assembly interface 301, which is convenient for the disassembly and replacement of the loading disc 3. The plug-in block 302 is then connected with the plug-in slot 303 to realize the transmission connection between the shaft cylinder 201 and the assembly interface 301, thereby realizing the rotational movement of the loading disc 3. The opening of the assembly interface 301 is sealed by the sealing plug 304, which effectively prevents the opening of the assembly interface 301 from affecting the rotational movement of the loading disc 3.

[0039] Figures 6 to 10As shown, a space window 4 is opened on the surface of the experimental platform 1 vertically corresponding to the loading bracket 104 and the loading shaft group 2. A load-bearing platform 401 is fixedly connected to the inside of the space window 4. The bottom of the loading disc 3 is in rolling contact with the load-bearing platform 401. Electromagnetic modules 402 are fixedly connected to the loading disc 3 alternately on the left and right sides at both ends of the load-bearing platform 401, so that there is a gap between the electromagnetic modules 402 in the same row, thereby effectively reducing the mutual influence between the two adjacent electromagnetic modules 402. A magnetic block 403 is fixedly embedded in the middle of the sealing plug 304. The electromagnetic module 402 and the magnetic block 403 are magnetically attracted to each other. The opened space window 4 provides space for the installation of the loading disc 3. The supporting platform 401 provides support for the rotation of the loading disc 3, effectively reducing the force on the loading shaft group 2, and when the loading disc 3 is disconnected, the inertial movement of the loading disc 3 is quickly stopped through the magnetic attraction between the electromagnetic module 402 and the magnetic block 403, effectively preventing the inertial movement of the loading disc 3 from affecting the experimental detection process. The four corners of the top of the supporting platform 401 are fixedly connected with support columns 404, and the tops of the four support columns 404 are fixedly connected with a limiting cover 405. The top of the loading disc 3 is in rolling contact with the limiting cover 405, and the limiting cover 405 is used to provide a limit for the top of the loading disc 3, effectively improving the stability of the loading disc 3 in a high-speed rotation state.

[0040] When the loading disc 3 rotates, the bottom of the loading disc 3 rolls on the upper surface of the supporting platform 401, and the top of the loading disc 3 rolls on the lower surface of the limiting cover 405. The supporting platform 401 provides support for the rotation of the loading disc 3, effectively reducing the force on the loading shaft group 2, making it easier to adapt to the loading disc 3 with larger mass, and effectively improving the stability of the loading disc 3 under high-speed rotation. After the loading disc 3 is disconnected, the corresponding electromagnetic module 402 is started, and the magnetic attraction ability of the electromagnetic module 402 and the magnetic block 403 is used to buffer the inertial rotation of the loading disc 3, so as to stop the rotation of the loading disc 3, and effectively prevent the inertial movement of the loading disc 3 from affecting the experimental detection process.

[0041] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A test bench for servo brake testing, characterized by: The invention comprises an experimental platform (1), wherein the middle part of the experimental platform (1) is fixedly connected to an experimental motor (101), the tail part of the experimental motor (101) is fixedly connected to a servo brake to be tested (102), the middle part of the experimental motor (101) is rotatably connected to a motor shaft (103), one end of the motor shaft (103) is fixedly connected to the servo brake to be tested (102), the other end of the motor shaft (103) is fixedly connected to a loading bracket (104), the end of the loading bracket (104) away from the experimental motor (101) is fixedly connected to a loading shaft group (2), the end of the loading shaft group (2) away from the loading bracket (104) is rotatably connected to a support seat (105), and the outer fixed sleeve of the loading shaft group (2) is provided with a loading disc (3), and the support seat (105) is fixedly connected to the experimental platform (1); The loading shaft group (2) is composed of a plurality of shaft cylinders (201) rotatably connected to each other, each shaft cylinder (201) corresponds to a loading plate (3), the middle of the loading bracket (104) is movably connected to a linkage shaft rod (202), the middle of the support seat (105) is movably connected to a series shaft rod (203), the linkage shaft rod (202) and the series shaft rod (203) are both sleeved with the shaft cylinder (201), and the extending end of the linkage shaft rod (202) is connected to the series shaft rod (203). The extending end of the shaft (203) is rotatably connected, the outside of the linkage shaft (202) is fixedly connected with a linkage rib (204), the inner wall of the shaft cylinder (201) is provided with a linkage groove (205), the linkage groove (205) is slidably connected to the linkage rib (204), the end of the support seat (105) away from the loading shaft group (2) is fixedly connected with an electric push rod (206), and the output end of the electric push rod (206) is fixedly connected to the series shaft (203); A group interface (301) is provided between the middle and the edge of the loading plate (3), the group interface (301) is U-shaped, and the group interface (301) is sleeved with the shaft cylinder (201), both ends of the interior of the group interface (301) are fixedly connected with plug-in blocks (302), both ends of the surface of the shaft cylinder (201) are provided with plug-in grooves (303), the plug-in blocks (302) are plugged into the plug-in grooves (303), and a sealing plug (304) is plugged into the open end of the group interface (301), the sealing plug (304) is fixedly connected to the loading plate (3) by bolts, and the outer end of the sealing plug (304) is fixedly connected to the loading plate (3). The end surface is arranged in an arc shape corresponding to the loading plate (3), and a space window (4) is provided on the surface of the experimental platform (1) vertically corresponding to the loading bracket (104) and the loading shaft group (2). The interior of the space window (4) is fixedly connected with a bearing platform (401), and the bottom of the loading plate (3) is in rolling contact with the bearing platform (401). The two ends of the bearing platform (401) are fixedly connected with electromagnetic modules (402) alternately on the left and right sides corresponding to the loading plate (3), and the middle part of the sealing plug (304) is fixedly inlaid with a magnetic block (403), and the electromagnetic module (402) and the magnetic block (403) are magnetically attracted to each other.

2. A servo brake testing test bench according to claim 1, characterized in that: A buffer spring (207) is fixedly connected between one end of the linkage shaft (202) away from the series shaft (203) and the loading bracket (104), and the electric push rod (206) and the buffer spring (207) correspond horizontally and collinearly.

3. A servo brake testing test bench according to claim 1, characterized in that: The four corners of the top of the carrier platform (401) are fixedly connected to support columns (404), and the tops of the four support columns (404) are fixedly connected to limiting covers (405), and the top of the loading plate (3) is in rolling contact with the limiting covers (405).

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