Precise clamping and power transmission mechanism of online test board

Abstract

The utility model provides an on-line testboard accurate clamping and power transmission mechanism comprising a driving mechanism comprising a driving member, a mounting rack, a plurality of slide rails and a base assembly, a transmission assembly comprising a connecting rod and a swing rod, one end of the connecting rod is connected with the output end of the driving member, one end of the swing rod is connected with the other end of the connecting rod, and the other end of the connecting rod is connected with the mounting rack. The fixing assembly comprises two bearing locking blocks and two shell locking blocks, the main shaft assembly comprises a bearing, a main shaft, a driving head and a centering rod, and the clamping jaw assembly comprises a plurality of jaw rods, a shell, a plurality of connecting rods, a plurality of limiting rods and a plurality of elastic pieces. The driving piece drives the swing rod to move through the connecting rod, so that the shell moves forwards or backwards under the action of the swing rod and the elastic piece, the claw rod is contracted and expanded, an engine can be fixed, an external spline shaft is not directly inserted into an internal spline on the clamping driving head, and the clamping driving head is fixed. Therefore, the abraded driving shaft does not need to be replaced frequently in the subsequent use process.

Description

A precision clamping and power transmission mechanism for an online testing platform Technical Field

[0001] This utility model relates to the field of automotive engine testing, specifically to an online test bench precision clamping and power transmission mechanism. Background Technology

[0002] The rapid rise of the automotive industry has led to the standardization and specialization of various automotive parts. In the automotive industry and even the entire power machinery sector, the engine, as a core component, directly determines a product's competitiveness and market position. Therefore, engine testing is not only a necessary step in product design and development but also a crucial means of driving technological innovation and improving product quality.

[0003] Engine testing is the process of testing and evaluating various performance parameters of an engine. This testing is typically conducted during the engine's research and development, production, and maintenance phases to ensure that the engine's performance meets design requirements and can operate reliably under various operating conditions. Engine testing can be categorized into several types, including performance testing, durability testing, environmental adaptability testing, reliability testing, and vibration and noise testing, with the specific test content and methods depending on the engine type and application.

[0004] In existing technologies, when performing partial performance tests on an engine, the engine is first secured using a drive mechanism with grippers before testing. Current drive mechanisms for securing the engine typically involve directly inserting an external splined shaft into the internal splines of a clamping drive head, enabling the drive head to rotate the engine. However, this method leads to severe wear on the splines on the external splined shaft after prolonged use, requiring frequent replacement. This necessitates having multiple external splined shafts available as spares for engine testing. Therefore, existing technologies have certain limitations. Summary of the Invention

[0005] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a precise clamping and power transmission mechanism for an online testing platform.

[0006] This utility model provides a precise clamping and power transmission mechanism for an online testing platform, characterized by the following features: a drive mechanism including a drive component, a mounting bracket, and multiple slide rails. The mounting bracket is mounted on the drive component, and the multiple slide rails are mounted on the mounting bracket, all located directly above the drive component. The arrangement direction of each slide rail is parallel to the running direction of the output end of the drive component.

[0007] The base assembly includes multiple sliders, a mounting base, a mounting bracket, and two limiting seats. Each slider is slidably mounted on a slide rail. The mounting base is disposed on the multiple sliders. A through slot is formed on the front wall of the mounting base and extends inward therefrom. The through slot is located directly above the output end of the drive component. The mounting bracket is disposed on the mounting base and located directly behind the through slot. The mounting bracket has at least one mounting portion perpendicular to the top surface of the mounting base. The mounting portion is U-shaped. The two limiting seats are disposed on the mounting base and are respectively located on both sides of the through slot.

[0008] The transmission assembly includes a connecting rod and a rocker arm. The connecting rod is located below the mounting support, with one end connected to the output end of the drive component. The rocker arm is located within a through slot and hinged to two limit seats. One end of the rocker arm is connected to the other end of the connecting rod, and the other end is U-shaped and located above the mounting base, opposite to the mounting portion.

[0009] The fixing assembly includes two bearing locking blocks and two housing locking blocks. The two bearing locking blocks are respectively and adjustablely mounted on two branches at the top of the mounting section, and the two housing locking blocks are respectively and adjustablely mounted on two branches at the other end of the rocker arm.

[0010] The spindle assembly includes a bearing, a spindle, a drive head, and a centering rod. The bearing is fixed between two bearing locking blocks, and an annular protrusion is provided on the outer wall of the bearing. The spindle is rotatably mounted on the bearing. A mounting groove is provided at the center of one end face of the spindle along its axial direction. The drive head is sleeved on one end of the spindle, and multiple mounting grooves are evenly provided on the annular wall of the drive head along its circumference. The centering rod is fixed to one end of the drive head through the mounting groove.

[0011] The gripper assembly includes multiple gripper bars, a housing, multiple connecting rods, multiple limiting rods, and multiple elastic elements. Each gripper bar includes a gripper end, a hinged portion, and a rod end. Each gripper bar is hingedly mounted in a mounting groove, and the gripper end of each gripper bar extends to the front of the drive head, while the rod end extends to the rear of the drive head.

[0012] The housing has a through hole for the spindle to pass through. A locking protrusion is located on the outer wall of the housing near one end. The housing is fixed between two housing locking blocks by the locking protrusion. Multiple limiting grooves are evenly distributed circumferentially around the through hole on one end face of the housing. Multiple mounting grooves are evenly distributed circumferentially on the outer wall of the housing near the other end.

[0013] One end of each link is hinged to the end of a claw lever, and the other end is fixed in a mounting groove.

[0014] Multiple limiting rods are evenly inserted around the bearing axis in a circumferential direction on the annular protrusion. One end of each elastic element is fixed to the end face of the annular protrusion and sleeved on a limiting rod, while the other end is inserted into a limiting groove and fixed to the bottom of the limiting groove.

[0015] The online test bench precision clamping and power transmission mechanism provided by this utility model also has the following features: the base assembly further includes a sensor support, which is disposed on the mounting plate and located on one side of the through groove. The sensor support is L-shaped and has a horizontal part and a vertical part. The horizontal part is attached to the top surface of the mounting plate, and the vertical part is provided with two mounting holes. The distance between the two mounting holes is not less than the length of the through groove. Each mounting hole is provided with a sensor for sensing the position of the swing arm.

[0016] Furthermore, a sensor rod is provided on the outer wall of the swing arm facing the sensor support, and the sensor rod is located on the same horizontal plane as the sensor.

[0017] The online test bench precision clamping and power transmission mechanism provided by this utility model also has the following features: threaded grooves are provided on the side walls of the two branches at the top of the mounting part and on the side walls of the two branches at the other end of the swing rod. A screw is screwed into each threaded groove, and one end of each screw faces the main shaft. The bearing locking block and the housing locking block are fixed on one end of the screw.

[0018] Functions and effects of utility models

[0019] According to the precision clamping and power transmission mechanism of the online test bench involved in this utility model, during engine testing, the centering rod facilitates alignment and adjustment with the engine tooling end. Simultaneously, the drive component, through a connecting rod, moves the swing arm, allowing the housing to move forward or backward under the action of the swing arm and elastic element. This causes the claw bar to contract and open, thereby securing the engine. Furthermore, this utility model directly inserts the internal spline of the clamping drive head without using an external spline shaft, eliminating the need for frequent replacement of worn drive shafts during subsequent use. Therefore, it offers advantages such as high stability and cost savings. Attached Figure Description

[0020] Figure 1 is a front view of a precision clamping and power transmission mechanism for an online testing platform according to this utility model;

[0021] Figure 2 is a top view of some components in the online test bench precision clamping and power transmission mechanism of this utility model;

[0022] Figure 3 is a side view of some components in the online test bench precision clamping and power transmission mechanism of this utility model;

[0023] Figure 4 is a side view of the initial state of the transmission component in the online test bench precision clamping and power transmission mechanism of this utility model;

[0024] Figure 5 is a cross-sectional view of some components in the precision clamping and power transmission mechanism of the online test bench of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Drive mechanism; 11. Drive component; 12. Mounting bracket; 13. Slide rail; 20. Base assembly; 21. Slider; 22. Mounting base plate; 23. Mounting support; 24. Limiting seat; 25. Sensor support; 30. Transmission assembly; 31. Connecting rod; 32. Swing rod; 40. Fixing assembly; 41. Bearing locking block; 42. Housing locking block; 50. Spindle assembly; 51. Bearing; 52. Spindle; 53. Drive head; 54. Centering rod; 60. Gripper assembly; 61. Gripper bar; 62. Housing; 63. Connecting rod; 64. Limiting rod; 65. Elastic element; 70. Sensor; 80. Sensor sensing rod. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0028] Example

[0029] Figure 1 is a front view of the present invention; Figure 2 is a top view of some components of the present invention; Figure 3 is a side view of some components of the present invention; Figure 4 is a side view of the transmission component in its initial state in the present invention; Figure 5 is a cross-sectional view of some components of the present invention.

[0030] As shown in Figures 1 to 5, this embodiment provides an online test bench precision clamping and power transmission mechanism, including: a drive mechanism 10, a base assembly 20, a transmission assembly 30, a fixing assembly 40, a spindle assembly 50, and a gripper assembly 60.

[0031] As shown in Figures 1, 2, and 4, the drive mechanism 10 includes a drive component 11, a mounting bracket 12, and multiple slide rails 13. The mounting bracket 12 is mounted on the drive component 11, and the multiple slide rails 13 are mounted on the mounting bracket 12, all located directly above the drive component 11. The arrangement direction of each slide rail 13 is parallel to the running direction of the output end of the drive component 11.

[0032] In this embodiment, the driving component 11 is a driving component 11 whose output end is capable of linear motion, such as an electric push rod, a cylinder, a hydraulic cylinder, or an electric cylinder. Preferably, the driving component 11 is an electric push rod.

[0033] In this embodiment, the mounting bracket 12 has two parts: a connecting section and a plate-shaped platform section. The platform section is located on the connecting section and is parallel to the top surface of the drive member 11, so that the arrangement direction of the multiple slide rails 13 arranged on the platform section can be parallel to the running direction of the output end of the drive member 11.

[0034] As shown in Figures 1 to 4, the base assembly 20 includes multiple sliders 21, a mounting base 22, a mounting support 23, and two limiting seats 24. Each slider 21 is slidably mounted on the slide rail 13. The mounting base 22 is mounted on the multiple sliders 21. A through groove is formed on the front end wall of the mounting base 22 and extends into it. The through groove is located directly above the output end of the drive member 11. The mounting support 23 is mounted on the mounting base 22 and located directly behind the through groove. The mounting support 23 has at least one mounting portion perpendicular to the top surface of the mounting base 22. The mounting portion is U-shaped. The two limiting seats 24 are mounted on the mounting base 22 and are located on both sides of the through groove.

[0035] In this embodiment, the base assembly 20 further includes a sensor support 25, which is disposed on the mounting base 22 and located on one side of the through groove. The sensor support 25 is L-shaped and has a horizontal part and a vertical part. The horizontal part is attached to the top surface of the mounting base 22, and the vertical part is provided with two mounting holes. The distance between the two mounting holes is not less than the length of the through groove. Each mounting hole is provided with a sensor 70 for sensing the position of the swing arm 32.

[0036] In this embodiment, a sensor rod 80 is provided on the outer wall of the swing arm 32 facing the sensor support 25, and the sensor rod 80 and the sensor 70 are located on the same horizontal plane.

[0037] In this embodiment, the mounting bracket 23 is preferably L-shaped, and the limiting seat 24 is preferably rectangular.

[0038] As shown in Figures 1 to 4, the transmission assembly 30 includes a connecting rod 31 and a swing rod 32. The connecting rod 31 is located below the mounting support 23, and one end of it is connected to the output end of the drive member 11. The swing rod 32 is located in the through groove and is hinged to two limit seats 24. One end of the swing rod 32 is connected to the other end of the connecting rod 31, and the other end is U-shaped and located above the mounting base plate 22, and is disposed opposite to the mounting part.

[0039] As shown in Figures 2 and 3, the fixing assembly 40 includes two bearing locking blocks 41 and two housing locking blocks 42. The two bearing locking blocks 41 are respectively adjustablely disposed on two branches at the top of the mounting part, and the two housing locking blocks 42 are respectively adjustablely disposed on two branches at the other end of the rocker arm 32.

[0040] In this embodiment, threaded grooves are provided on the side walls of the two branches at the top of the mounting part and on the side walls of the two branches at the other end of the swing rod 32. A screw is screwed into each threaded groove, and one end of each screw faces the main shaft 52. The bearing locking block 41 and the housing locking block 42 are fixed on one end of the screw.

[0041] As shown in Figures 1 and 5, the spindle assembly 50 includes a bearing 51, a spindle 52, a drive head 53, and a centering rod 54. The bearing 51 is fixed between two bearing locking blocks 41. An annular protrusion is provided on the outer wall of the bearing 51. The spindle 52 is rotatably mounted on the bearing 51. A mounting groove is provided at the center of one end face of the spindle 52 along its axial direction. The drive head 53 is sleeved on one end of the spindle 52. Multiple mounting grooves are evenly provided on the annular wall of the drive head 53 along its circumference. The centering rod 54 is fixed to one end of the drive head 53 through the mounting groove.

[0042] As shown in Figures 1 and 5, the gripper assembly 60 includes multiple gripper bars 61, a housing 62, multiple connecting rods 63, multiple limiting rods 64, and multiple elastic elements 65. Each gripper bar 61 includes a gripper end, a hinged portion, and a rod end. Each gripper bar 61 is hinged in a mounting groove, and the gripper end of each gripper bar 61 extends to the front of the drive head 53, while the rod end extends to the rear of the drive head 53. The housing 62 has a through hole for the spindle 52 to pass through. A locking protrusion is located on the outer wall of the housing 62 near one end. The housing 62 is fixed between two housing locking blocks 42 by the locking protrusion. The locking protrusion is located on one end face of the housing 62, centered on the through hole and circumferentially. Multiple limiting grooves are evenly provided, and multiple mounting grooves are evenly provided circumferentially on the outer wall of the outer shell 62 near the other end; one end of each connecting rod 63 is hinged to the rod end of a claw rod 61, and the other end is fixed in a mounting groove; multiple limiting rods 64 are evenly inserted circumferentially on the annular protrusion with the axis of the bearing 51 as the center, and one end of each elastic element 65 is fixed on the end face of the annular protrusion and sleeved on a limiting rod 64, and the other end is inserted into a limiting groove and fixed to the bottom of the limiting groove.

[0043] In this embodiment, the elastic element 65 is preferably a spring.

[0044] As shown in Figure 1, when the output end of the drive component 11 drives one end of the connecting rod 63 to move forward, the other end of the connecting rod 63 will drive one end of the swing rod 32 to move forward. At this time, since the swing rod 32 is hinged on the two limit seats 24, the other end of the swing rod 32 will move backward, thereby driving the outer shell 62 to move backward (at this time, the elastic element 65 will be compressed and contracted), causing the other end of the connecting rod 63 to move backward, and then driving the claw end of the claw rod 61 to move towards the outer periphery of the drive head 53, presenting a state in which multiple claw rods 61 are open. Therefore, after centering and adjusting with the engine through the centering rod 54, the engine can be placed between the multiple claw rods 61.

[0045] As shown in Figure 4, after the engine is placed, or when the engine vibration test is not performed using this invention, i.e., when the output end of the drive member 11 drives one end of the connecting rod 31 to move backward, or does not drive one end of the connecting rod 63 to move forward, the swing rod 32 is tilted in the through groove. That is, the other end of the swing rod 32 no longer drives the outer shell 62 to move backward. At this time, the outer shell 62 is reset or stationary under the action of the elastic member 65. As a result, the connecting rod 63 will not drive the end of the claw rod 61 to move. Consequently, the claw end of the claw rod 61 will move towards the inner circumference of the drive head 53, presenting a state in which multiple claw rods 61 are retracted, thus fixing the engine.

[0046] The role and effect of the embodiments

[0047] According to the precision clamping and power transmission mechanism of the online test bench involved in this utility model, during engine testing, the centering rod facilitates alignment and adjustment with the engine tooling end. Simultaneously, the drive component, through a connecting rod, moves the swing arm, allowing the housing to move forward or backward under the action of the swing arm and elastic element. This causes the claw bar to contract and open, thereby securing the engine. Furthermore, this utility model directly inserts the internal spline of the clamping drive head without using an external spline shaft, eliminating the need for frequent replacement of worn drive shafts during subsequent use. Therefore, it offers advantages such as high stability and cost savings.

[0048] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model.

Claims

1. A precision clamping and power transmission mechanism for an online testing platform, characterized in that, include: The driving mechanism includes a driving component, a mounting bracket, and multiple slide rails. The mounting bracket is mounted on the driving component, and the multiple slide rails are mounted on the mounting bracket and are all located directly above the driving component. The arrangement direction of each slide rail is parallel to the running direction of the output end of the driving component. The base assembly includes multiple sliders, a mounting base, a mounting support, and two limiting seats. Each slider is slidably mounted on the slide rail. The mounting base is mounted on the multiple sliders. A through groove is formed on the front wall of the mounting base and extends inward therein. The through groove is located directly above the output end of the driving component. The mounting support is mounted on the mounting base and located directly behind the through groove. At least one of the mounting supports is perpendicular to the through groove. The mounting portion on the top surface of the mounting base is U-shaped. Two limiting seats are disposed on the mounting base and are located on both sides of the through groove. The transmission assembly includes a connecting rod and a swing rod. The connecting rod is located below the mounting support, and one end of it is connected to the output end of the drive component. The swing rod is located in the through groove and is hinged to the two limiting seats. One end of the swing rod is connected to the other end of the connecting rod, and the other end is U-shaped and located above the mounting base, opposite to the mounting portion. The fixing assembly includes two bearing locking blocks and two housing locking blocks. The two bearing locking blocks are respectively adjustablely disposed on two branches at the top of the mounting portion. The two housing locking blocks are respectively adjustablely disposed on two branches at the top of the mounting portion. On the two branches at the other end of the swing arm, the main shaft assembly includes a bearing, a main shaft, a drive head, and a centering rod. The bearing is fixed between two bearing locking blocks, and an annular protrusion is provided on the outer wall of the bearing. The main shaft is rotatably mounted on the bearing. A mounting groove is provided at the center of one end face of the main shaft along its axial direction. The drive head is sleeved on one end of the main shaft, and multiple mounting grooves are evenly provided on the annular wall of the drive head along its circumference. The centering rod is fixed to one end of the drive head through the mounting groove. The gripper assembly includes multiple gripper bars, a housing, multiple connecting rods, multiple limiting rods, and multiple elastic elements. Each gripper bar includes a gripper end, a hinge part, and a rod end. The rods are hinged and mounted in the mounting groove, with the claw end of each claw extending to the front of the drive head and the rod end extending to the rear of the drive head. The housing has a through hole for the spindle to pass through. A locking protrusion is located on the outer wall of the housing near one end. The housing is fixed between two housing locking blocks via the locking protrusion. Multiple limiting grooves are evenly distributed circumferentially around the through hole on one end face of the housing. Multiple mounting grooves are evenly distributed circumferentially around the other end on the outer wall of the housing. One end of each connecting rod is hinged to the rod end of a claw, and the other end is fixed in a mounting groove. Multiple limiting rods are evenly inserted circumferentially onto the annular protrusion with the bearing axis as the center.One end of each elastic element is fixed to the end face of the annular protrusion and sleeved on a limiting rod, while the other end is inserted into a limiting groove and fixed to the bottom of the limiting groove.

2. The online testing platform precision clamping and power transmission mechanism according to claim 1, characterized in that: in, The base assembly also includes a sensor support, which is disposed on the mounting base and located on one side of the through groove. The sensor support is L-shaped and has a horizontal part and a vertical part. The horizontal part is attached to the top surface of the mounting base, and the vertical part is provided with two mounting holes. The distance between the two mounting holes is not less than the length of the through groove. Each mounting hole is provided with a sensor for sensing the position of the swing arm.

3. The online testing platform precision clamping and power transmission mechanism according to claim 2, characterized in that: in, A sensor rod is provided on the outer wall of the swing arm facing the sensor support, and the sensor rod and the sensor are located on the same horizontal plane.

4. The online testing platform precision clamping and power transmission mechanism according to claim 1, characterized in that: in, Threaded grooves are provided on the side walls of the two branches at the top of the mounting part and on the side walls of the two branches at the other end of the swing rod. A screw is screwed into each threaded groove, and one end of each screw faces the main shaft. The bearing locking block and the housing locking block are fixed to one end of the screw.

Images