Engine vibration experiment platform

Abstract

The invention relates to the technical field of engine vibration experiments, in particular to an engine vibration experiment platform which comprises an experiment platform body and further comprises an auxiliary control box, the auxiliary control box is fixedly connected with the experiment platform body, a folding and unfolding sliding groove opening is formed in the auxiliary control box, a square enclosure frame is slidably installed in the folding and unfolding sliding groove opening, and the square enclosure frame is fixedly connected with the experiment platform body. The square enclosure frame is arranged on the experiment platform in a sleeving manner; the folding and unfolding test mechanism is connected with the experiment platform, the square enclosure frame and the folding and unfolding sliding groove opening, and the folding and unfolding test mechanism comprises a folding and unfolding driving assembly, an unfolding and folding transmission assembly and test equipment; according to the engine vibration experiment platform, the unfolding and folding transmission assembly can be unfolded by different distances according to the structure and the size of the engine so as to wrap the engine to be tested, so that a plurality of testing devices can rapidly make contact with all testing parts of the engine, and the efficiency of vibration testing work can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of engine vibration experiments, in particular to an engine vibration experiment platform. Background Art

[0002] The original intention of designing the engine vibration test platform is to simulate the vibration environment of the engine during actual operation. During the development and optimization of the engine, engineers need to have a deep understanding of the vibration characteristics of the engine under different working conditions in order to improve the structure, materials and manufacturing process of the engine, thereby improving the reliability and performance of the engine. The platform is usually composed of multiple modules such as the base plate, engine module, motor module and sensor measurement system, among which the engine module is the core part, including the diesel engine, shock absorber, mounting base and auxiliary equipment. During the experiment, the platform can simulate various vibration conditions and working conditions, and perform vibration tests on key parts of the engine such as the crankcase, cylinder block, cylinder head and intake and exhaust pipes. The detection method mainly monitors and records the vibration and noise parameters of the engine in real time through the sensor measurement system. These sensors can accurately capture the vibration conditions of various parts of the engine, providing a strong basis for the design and improvement of the engine. At the same time, the platform can also carry out various fault diagnosis tests and research, timely discover and eliminate potential engine faults, and improve the reliability and safety of the engine.

[0003] During the use of the existing engine vibration test platform, it is necessary to perform vibration tests on multiple key parts of the engine. Especially for engines with different sizes and structures, the installation of the sensor measurement system is very inconvenient and may even become loose, thereby affecting the efficiency of the experimental work and the results of the vibration test, causing inconvenience to the staff. Therefore, in view of the above situation, it is urgent to develop an engine vibration test platform to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide an engine vibration test platform to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An engine vibration test platform comprises an experimental platform, wherein a vibration test part is arranged on the experimental platform, and further comprises: An auxiliary control box, the auxiliary control box is fixedly connected to the experimental platform, and the auxiliary control box is provided with a retractable slide slot, a square enclosure frame is slidably installed in the retractable slide slot, and the square enclosure frame is sleeved on the experimental platform; and a folding and unfolding test mechanism, which is respectively connected to the experimental platform, the square enclosure frame and the folding and unfolding slide slot, wherein the folding and unfolding test mechanism includes a folding and unfolding drive assembly, an unfolding and closing transmission assembly and a test device; The retractable and extended driving assembly is respectively connected to the experimental platform and the retractable and extended slide slot, the unfolding and closing transmission assembly is respectively connected to the square enclosure frame and the retractable and extended driving assembly, and is connected to the retractable and extended slide slot, and a plurality of testing devices are also arranged on the unfolding and closing transmission assembly.

[0006] As a further solution of the present invention: the experimental platform is also provided with a retractable cleaning part, and when the unfolding and closing transmission assembly drives the multiple test devices to be in a retracted state, the retractable cleaning part blows air to clean the multiple test devices.

[0007] As a further solution of the present invention: the retraction and extension drive assembly includes: A retractable support plate, which is fixedly mounted on the experimental platform and is also connected to the unfolding and closing transmission assembly; A telescopic cylinder connected to the retractable support plate; And a moving rod, wherein the moving rod is connected to the output end of the telescopic cylinder, and the moving rod is also connected to the expansion and contraction transmission assembly.

[0008] As a further solution of the present invention: the unfolding and closing transmission assembly includes a transmission unit, a transfer connecting plate and a transmission connecting rod, and the number of the transmission units is two sets; One set of transmission units is respectively connected to the transfer connecting plate, the transmission connecting rod and the retracting and extending driving assembly, and the other set of transmission units is respectively connected to the transfer connecting plate, the transmission connecting rod and the square enclosure frame.

[0009] As a further solution of the present invention: one of the transmission units comprises: A driving slot plate, wherein the number of the driving slot plates is two, and the two driving slot plates are respectively fixedly connected to the retractable support plate and the retractable slide slot opening; A sliding plate, the sliding plate is slidably mounted in the driving slot plate and fixedly connected to the moving rod; Wherein, the driving slot plate is also provided with a guide slot, the sliding plate is fixedly provided with a guide slider, the guide slider is inserted into the guide slot and is slidably connected with the guide slot; And a movable connection module, wherein the movable connection module is connected to the driving slot plate and the sliding plate, and is respectively connected to the transfer connecting plate and the transmission connecting rod.

[0010] As a further solution of the present invention: the active connection module includes: A rack, the rack is fixedly connected to the sliding plate and slidably connected to the driving slot plate; Gear 1, the gear 1 is rotatably mounted on the driving slot plate and meshed with the rack, and an expansion link 1 is fixedly mounted on the gear 1; A second unfolding link, one end of which is rotatably connected to the other end of the first unfolding link, wherein a test adjustment rod is further provided at the connection between the first unfolding link and the second unfolding link, and a plurality of protective baffle rods are further provided on the first unfolding link and the second unfolding link; And gear 2, the gear 2 is rotatably mounted on the transfer connecting plate and fixedly connected to the other end of the unfolding connecting rod 2, and one of the gears 2 is connected to the gear 2 on another set of the transmission unit through the transmission connecting rod.

[0011] As a further solution of the present invention: the testing device comprises: An adjusting sleeve, the adjusting sleeve being connected to the unfolding and closing transmission assembly, wherein a positioning portion is provided on the adjusting sleeve, and the positioning portion is detachably connected to the unfolding and closing transmission assembly; A rotating sleeve, the rotating sleeve is sleeved on the adjusting sliding sleeve and is rotatably connected with the adjusting sliding sleeve; A telescopic control cylinder, wherein the telescopic control cylinder is fixedly connected to the rotating sleeve; And a test adjustment component, wherein the test adjustment component is connected to the telescopic control cylinder.

[0012] As a further solution of the present invention: the test adjustment component includes: A top-tightening telescopic plate, the top-tightening telescopic plate passes through the telescopic control tube and is slidably connected with the telescopic control tube, and a plurality of positioning strips are evenly installed on the top-tightening telescopic plate; A circular slide plate, wherein the circular slide plate is slidably mounted in the telescopic control cylinder, and the circular slide plate is also fixedly connected to the inner wall of the telescopic control cylinder via a second spring; An L-shaped limiting plate, one end of which is fixedly connected to the circular sliding plate, and the other end of which is slidably connected to the tightening telescopic plate and detachably connected to the positioning strip; A pressing control rod, one end of which passes through the telescopic control cylinder and the second spring and is fixedly connected to the circular slide plate; And a test module, wherein the test module is fixedly connected to the end of the tightening telescopic plate.

[0013] As a further solution of the present invention: the test module includes: An abutment buffer bin, the abutment buffer bin being fixedly connected to the end of the tightening telescopic plate; A sensor measuring device, the sensor measuring device is located in the abutment buffer bin and is slidably connected to the abutment buffer bin via a sliding structure; And a spring 1, two ends of which are fixedly connected to the abutment buffer bin and the sensor measuring device respectively.

[0014] As a further solution of the present invention: it also includes: a detection display, the detection display is fixedly mounted on the auxiliary control box; And a warning detector, which is fixedly mounted on the top-tightening telescopic plate and located at one end of the top-tightening telescopic plate away from the experimental platform, and the warning detector is also electrically connected to the detection display.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When conducting a vibration test on an engine, first, fix the engine to be tested on the vibration test part, then start the retractable and extended drive assembly, and drive the expansion and closing transmission assembly to move, and the expansion and closing transmission assembly will push the square enclosure frame to slide in the retractable and extended slide groove, so that the engine to be tested can be enclosed in the expansion and closing transmission assembly. At this time, since a plurality of test devices are arranged on the expansion and closing transmission assembly, the test devices can be respectively contacted with the parts of the engine to be tested, so as to test the vibration conditions of various components of the engine under different working conditions, and the data detected by the test equipment will be transmitted to the terminal equipment for analysis and calculation, which will not be elaborated here. In addition, through the retractable and extended cleaning part, wherein the retractable and extended cleaning part can be connected to an external high-pressure air source, and nozzles with different air outlet directions are arranged on the retractable and extended cleaning part, since the positions of a plurality of test devices are fixed in the retracted state (not necessarily in the expanded state), the nozzles are mainly directed to the retracted state. The position of each test equipment in the retracted state can be determined, so that the test equipment can be automatically cleaned in the retracted state to ensure the accuracy of the next test result. In addition, since multiple test equipment are gathered together in the retracted state, cleaning is more convenient and occupies less space. At the same time, the expansion and contraction transmission assembly can protect the test equipment in the retracted or deployed state to prevent the test equipment from being damaged due to collision and other reasons. The operation is simple. According to the structure and size of the engine, the retracted and contracted drive assembly will drive the expansion and contraction transmission assembly to expand to different distances to wrap the engine to be tested. Through the flexible arrangement of multiple test equipment, it can quickly contact with various test parts of the engine, thereby improving the efficiency of the vibration test and ensuring the results of the vibration test, providing convenience for the staff. In addition, since the expansion and contraction transmission assembly encloses the engine to be tested, the safety of the entire test process can be guaranteed and the probability of accidents can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the experimental platform in the embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the overall retractable and extended support plate in an embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the overall three-dimensional structure in the upward direction of the embodiment of the present invention.

[0019] Figure 4 It is a schematic cross-sectional structure diagram of a square enclosure frame in an embodiment of the present invention.

[0020] Figure 5 It is a schematic cross-sectional structural diagram of a moving rod in an embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the transfer connecting plate in an embodiment of the present invention.

[0022] Figure 7 Schematic diagram of the top view of the driving slot plate in an embodiment of the present invention.

[0023] Figure 8 It is a schematic diagram of the enlarged three-dimensional structure of the telescopic control tube in the embodiment of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the distribution of warning detectors in an embodiment of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the positioning strip distribution in an embodiment of the present invention.

[0026] Fig.11 It is a schematic cross-sectional structure diagram of the abutment buffer bin in an embodiment of the present invention.

[0027] Fig.12 Schematic diagram of the three-dimensional structure of the L-shaped limiting plate in an embodiment of the present invention.

[0028] In the figure: 1-experimental platform, 2-auxiliary control box, 3-detection display, 4-folding support plate, 5-driving slot plate, 6-square enclosure frame, 7-vibration test part, 8-folding and cleaning part, 9-folding and sliding slot, 10-sliding plate, 11-rack, 12-gear 1, 13-folding connecting rod 1, 14-folding connecting rod 2, 15-guide slot, 16-guide slider, 17-transfer connecting plate, 18-transmission connecting rod, 19-test adjustment rod, 20- Protective stop rod, 21-moving rod, 22-telescopic cylinder, 23-telescopic control cylinder, 24-gear two, 25-adjusting sliding sleeve, 26-limiting groove, 27-positioning part, 28-pressing control rod, 29-tightening telescopic plate, 30-positioning strip, 31-abutting buffer bin, 32-sensing measuring device, 33-warning detector, 34-sliding structure, 35-spring one, 36-spring two, 37-L-type limiting plate, 38-circular slide plate, 39-rotating sleeve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] See also Figure 1-Figure 12 An engine vibration test platform provided by an embodiment of the present invention includes a test platform 1, on which a vibration test unit 7 is provided, and further includes: An auxiliary control box 2, the auxiliary control box 2 is fixedly connected to the experimental platform 1, and the auxiliary control box 2 is provided with a retractable slide slot 9, a square enclosure frame 6 is slidably installed in the retractable slide slot 9, and the square enclosure frame 6 is sleeved on the experimental platform 1; and a folding and unfolding test mechanism, which is respectively connected to the experimental platform 1, the square enclosure frame 6 and the folding and unfolding slide slot 9, wherein the folding and unfolding test mechanism includes a folding and unfolding drive component, an unfolding and closing transmission component and a test device; The retracting and extending driving assembly is respectively connected to the experimental platform 1 and the retracting and extending slide slot 9, and the unfolding and closing transmission assembly is respectively connected to the square enclosure frame 6 and the retracting and extending driving assembly, and is connected to the retracting and extending slide slot 9, and a plurality of testing devices are also arranged on the unfolding and closing transmission assembly.

[0032] See also Figure 1-Figure 12The experimental platform 1 is also provided with a retractable cleaning portion 8. When the unfolding transmission assembly drives the multiple test devices to be in a retracted state, the retractable cleaning portion 8 blows air to clean the multiple test devices.

[0033] When the engine is subjected to a vibration test, first, the engine to be tested is fixed at the vibration test part 7, wherein the experimental platform 1 can adopt the existing platform form, such as being provided with a motor module, etc., which can drive the engine to work, and other auxiliary equipment is installed in the auxiliary control box 2, which will not be described in detail here. Then, the retracting and extending driving component is started, and the extending and closing transmission component is driven to move, and the extending and closing transmission component will push the square enclosure frame 6 to slide in the retracting and extending slide groove 9, so that the engine to be tested can be enclosed in the extending and closing transmission component. At this time, since a plurality of test equipments are provided on the extending and closing transmission component, the test equipments can be respectively contacted with the parts of the engine to be tested, so as to test the vibration conditions of each component of the engine under different working conditions, and the data detected by the test equipment will be transmitted to the terminal device for analysis and calculation, which will not be described in detail here. In addition, through the retracting and releasing cleaning part 8, wherein the retracting and releasing cleaning part 8 can be connected to an external high-pressure air source, and the retracting and releasing cleaning part 8 is provided with nozzles with different air outlet directions, Since the positions of multiple test devices are fixed in the retracted state (not necessarily in the expanded state), the nozzles are mainly directed to the positions of each test device in the retracted state, so that the test devices can be automatically cleaned in the retracted state to ensure the accuracy of the next test result. Moreover, since multiple test devices are gathered together in the retracted state, cleaning is more convenient and occupies less space. At the same time, the deployment transmission assembly can protect the test equipment in the retracted or expanded state to prevent the test equipment from being damaged due to collision and other reasons. The operation is simple. According to the structure and size of the engine, the retracted and expanded drive assembly will drive the deployment transmission assembly to expand to different distances to wrap the engine to be tested. Through the flexible arrangement of multiple test devices, it can quickly contact with various test parts of the engine, thereby improving the efficiency of the vibration test and ensuring the results of the vibration test, which provides convenience for the staff. In addition, since the deployment transmission assembly encloses the engine to be tested, the safety of the entire test process can be guaranteed and the probability of accidents can be reduced.

[0034] In one embodiment of the present invention, see Figure 1-Figure 12 , the retractable and extendable driving component comprises: A retractable support plate 4, wherein the retractable support plate 4 is fixedly mounted on the experimental platform 1, and the retractable support plate 4 is also connected to the unfolding transmission assembly; A telescopic cylinder 22, wherein the telescopic cylinder 22 is connected to the retractable support plate 4; And a moving rod 21, wherein the moving rod 21 is connected to the output end of the telescopic cylinder 22, and the moving rod 21 is also connected to the expansion and contraction transmission assembly.

[0035] See also Figure 1-Figure 12 The unfolding and closing transmission assembly includes a transmission unit, a transfer connecting plate 17 and a transmission connecting rod 18, and the number of the transmission units is two sets; One set of transmission units is respectively connected to the transfer connecting plate 17, the transmission connecting rod 18 and the retracting and extending driving assembly, and the other set of transmission units is respectively connected to the transfer connecting plate 17, the transmission connecting rod 18 and the square enclosure frame 6.

[0036] One of the transmission units comprises: A driving slot plate 5, wherein the number of the driving slot plates 5 is two, and the two driving slot plates 5 are respectively fixedly connected to the retractable support plate 4 and the retractable slide slot opening 9; A sliding plate 10, wherein the sliding plate 10 is slidably mounted in the driving slot plate 5 and is fixedly connected to the moving rod 21; The driving slot plate 5 is also provided with a guide slot 15, and the sliding plate 10 is fixedly provided with a guide slider 16, which is inserted into the guide slot 15 and is slidably connected with the guide slot 15; And a movable connection module, the movable connection module is connected to the driving slot plate 5 and the sliding plate 10, and is respectively connected to the transfer connecting plate 17 and the transmission connecting rod 18.

[0037] The active connection module includes: A rack 11, wherein the rack 11 is fixedly connected to the sliding plate 10 and is slidably connected to the driving slot plate 5; Gear 12, the gear 12 is rotatably mounted on the driving slot plate 5 and meshed with the rack 11, and an expansion link 13 is also fixedly mounted on the gear 12; A second unfolding link 14, one end of which is rotatably connected to the other end of the first unfolding link 13, wherein a test adjustment rod 19 is further provided at the connection between the first unfolding link 13 and the second unfolding link 14, and a plurality of protective blocking rods 20 are further provided on the first unfolding link 13 and the second unfolding link 14; And gear 2 24, said gear 24 is rotatably mounted on the transfer connecting plate 17 and fixedly connected to the other end of the unfolding connecting rod 2 14, wherein one of the gears 24 is connected to the gear 24 on another set of the transmission unit through the transmission connecting rod 18.

[0038] After the engine to be tested is fixed, the telescopic cylinder 22 is started to drive the moving rod 21 to move horizontally, and drive the upper and lower sliding plates 10 to slide in the two driving slot plates 5 respectively. During the movement of the sliding plate 10, the two racks 11 at both ends of the sliding plate 10 can be driven to move synchronously, thereby driving the two gears 12 to rotate simultaneously, and the rotation directions are opposite (such as Figure 4 As shown, for example, when it is necessary to reach the unfolded state, the gear 12 located on the inner side of the driving slot plate 5 rotates clockwise, and the gear 12 located on the outer side of the driving slot plate 5 rotates counterclockwise). During the rotation of the gear 12, the deployment link 13 will be driven to rotate synchronously, and the deployment link 13 will drive the deployment link 2 14 to rotate, thereby driving the transfer connecting plate 17 to move horizontally, wherein the transfer connecting plate 17 may also be provided with a plurality of test equipment to test the top part of the engine, which will not be elaborated here, and under the transmission action of a plurality of gears, the displacement of the two sets of transmission units can be ensured to be the same (wherein, the two sets of transmission units have the same structure and are respectively located on both sides of the transfer connecting plate 17), thereby driving a plurality of test equipment to be evenly distributed around the engine, and under the driving action of the transmission unit, the square enclosure frame 6 can slide in the retractable and unfolding slide groove 9, wherein the square enclosure frame 6 may also be provided with another set of auxiliary power. Equipment, such as hydraulic equipment, can push the square enclosure frame 6 to slide in the retractable and deployable slide groove 9, and during the sliding process of the square enclosure frame 6, the two sets of transmission units can be retracted and deployed to ensure the smooth deployment of the equipment, thereby completing the protection and testing of the engine. Among them, when the equipment is in the deployed state, multiple test adjustment rods 19 are distributed around the engine, and the enclosure structure composed of the test adjustment rods 19 and the protective baffle rods 20 can protect the engine during the entire vibration test process, thereby avoiding injury to surrounding personnel, and the test equipment can be installed on the transfer connecting plate 17, the test adjustment rods 19 and the protective baffle rods 20, so as to realize testing of multiple parts on the engine. The specific installation quantity and installation position are limited here. After the test adjustment rod 19 is in the deployed state, the staff only needs to operate the test equipment to directly contact the test equipment with the part to be tested, and the installation is simple and convenient.

[0039] In one embodiment of the present invention, see Figure 1-Figure 12 , the test equipment comprises: An adjusting sleeve 25, wherein the adjusting sleeve 25 is connected to the unfolding and closing transmission assembly, wherein a positioning portion 27 is provided on the adjusting sleeve 25, and the positioning portion 27 is detachably connected to the unfolding and closing transmission assembly; A rotating sleeve 39, wherein the rotating sleeve 39 is sleeved on the adjusting sleeve 25 and is rotatably connected to the adjusting sleeve 25; A telescopic control cylinder 23, wherein the telescopic control cylinder 23 is fixedly connected to the rotating sleeve 39; And a test adjustment component, wherein the test adjustment component is connected to the telescopic control tube 23.

[0040] The test adjustment component includes: A top-tightening telescopic plate 29, the top-tightening telescopic plate 29 passes through the telescopic control tube 23 and is slidably connected to the telescopic control tube 23, and a plurality of positioning strips 30 are evenly mounted on the top-tightening telescopic plate 29; A circular slide plate 38, wherein the circular slide plate 38 is slidably mounted in the telescopic control cylinder 23, and the circular slide plate 38 is also fixedly connected to the inner wall of the telescopic control cylinder 23 via a second spring 36; An L-shaped limit plate 37, one end of which is fixedly connected to the circular slide plate 38, and the other end of which is slidably connected to the top-tightening telescopic plate 29 and detachably connected to the positioning bar 30; A pressing control rod 28, one end of which passes through the telescopic control cylinder 23, passes through the second spring 36, and is fixedly connected to the circular slide plate 38; And a test module, wherein the test module is fixedly connected to the end of the tightening telescopic plate 29.

[0041] The test module includes: Abutment buffer bin 31, wherein the abutment buffer bin 31 is fixedly connected to the end of the tightening telescopic plate 29; A sensor measuring device 32, wherein the sensor measuring device 32 is located in the abutment buffer bin 31 and is slidably connected to the abutment buffer bin 31 via a sliding structure 34; And a spring 35, two ends of which are fixedly connected to the abutment buffer bin 31 and the sensor measuring device 32 respectively.

[0042] See also Figure 1-Figure 12 , further comprising: a detection display 3, wherein the detection display 3 is fixedly mounted on the auxiliary control box 2; And a warning detector 33, which is fixedly mounted on the top tightening telescopic plate 29 and located on one end of the top tightening telescopic plate 29 away from the experimental platform 1, and the warning detector 33 is also electrically connected to the detection display 3.

[0043] After the unfolding transmission assembly is in the unfolded state, according to the structure and size of the engine, the longitudinal position of the adjusting sleeve 25 on the test adjustment rod 19 is adjusted manually (other installation position adjustment methods are similar), so that the height of the abutting buffer bin 31 and the sensor measuring device 32 can be changed to make the sensor measuring device 32 equal to the height of the part to be detected, or adjusted to an appropriate height position, wherein a limiting groove 26 is provided on the inner wall of the adjusting sleeve 25, which can be clamped and connected with the convex part on the test adjustment rod 19 to prevent the adjusting sleeve 25 from rotating on the test adjustment rod 19, and then, the pressing control rod 28 is pressed manually to make the circular slide plate 38 and the L-shaped limiting plate 37 move downward synchronously. At this time, the spring 2 36 is in a stretched state, and the L-shaped limiting plate 3 During the downward movement, the tensioning plate 29 can be separated from the gap between the adjacent positioning strips 30. At this time, the tensioning plate 29 can move freely in the tensioning control cylinder 23. Under the action of human power, the tensioning plate 29 can be moved toward the direction of the engine until the sensor measuring device 32 contacts the test part of the engine. In addition, the tensioning control cylinder 23 can also rotate on the adjusting sleeve 25 through the rotating sleeve 39. A damping rotation method is adopted between the spring 1 35 and the rotating sleeve 39 to avoid frequent rotation of the rotating sleeve 39 on the adjusting sleeve 25. By adjusting the relative position between the sliding sleeve 25 and the rotating sleeve 39, the accuracy of the contact between the sensor measuring device 32 and the test part can be further guaranteed. After the contact is made, the pressing control rod 28 is released. At this time, under the elastic force of the second spring 36, the L-shaped limit plate 37 can be moved upward and block the positioning bar 30, so that the positioning of the sensor measuring device 32 can be achieved. In addition, since the sensor measuring device 32 can be moved a short distance in the abutment buffer bin 31 through the sliding structure 34 (wherein the sliding structure 34 can adopt the form of an existing slider and a guide rail, which will not be described in detail here), and under the thrust of the spring 1 35, on the one hand, it can ensure that the L-shaped limit plate 37 is smoothly installed in the gap between adjacent positioning bars 30, and on the other hand, it can prevent the engine from vibrating too much and causing damage to the sensor measuring device 32. In addition, through the set warning detector 33, by tightening the telescopic plate 29 in the telescopic The position of movement in the control tube 23 is different (more movement means that the part to be tested may be in the recessed part of the engine, less movement means that the part to be tested may be in the protruding part of the engine), and the length of the warning detector 33 from the experimental platform 1 is also different, so that the safety distance that the staff needs to maintain with each test part of the engine is approximately the same, so that the staff can operate the entire test process as conveniently as possible under the premise of ensuring safety. When the hand or body of the staff approaches the warning detector 33 (including the longitudinal surface of the preset range of the warning detector 33, such as the staff approaching other positions on the longitudinal surface of the warning detector 33 within 50cm, it will be detected and alarmed), the detection display 3 will start,The alarm and flashing lights will sound to remind the workers that they have reached the dangerous area and need to leave as soon as possible, which is helpful to avoid burns or other mechanical injuries to the workers, thus ensuring the safety of work.

[0044] It should be noted that in the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An engine vibration test platform, comprising a test platform, wherein a vibration test unit is provided on the test platform, characterized in that: Also includes: An auxiliary control box, the auxiliary control box is fixedly connected to the experimental platform, and the auxiliary control box is provided with a retractable slide slot, a square enclosure frame is slidably installed in the retractable slide slot, and the square enclosure frame is sleeved on the experimental platform; and a folding and unfolding test mechanism, which is respectively connected to the experimental platform, the square enclosure frame and the folding and unfolding slide slot, wherein the folding and unfolding test mechanism includes a folding and unfolding drive assembly, an unfolding and closing transmission assembly and a test device; The retractable and extended driving assembly is respectively connected to the experimental platform and the retractable and extended slide slot, the unfolding and closing transmission assembly is respectively connected to the square enclosure frame and the retractable and extended driving assembly, and is connected to the retractable and extended slide slot, and a plurality of testing devices are also arranged on the unfolding and closing transmission assembly.

2. The engine vibration test platform according to claim 1, characterized in that: The experimental platform is also provided with a retractable cleaning part. When the unfolding and closing transmission assembly drives the multiple test devices to be in a retracted state, the retractable cleaning part blows air to clean the multiple test devices.

3. The engine vibration test platform according to claim 1 or 2, characterized in that: The retraction and expansion drive component comprises: A retractable support plate, which is fixedly mounted on the experimental platform and is also connected to the unfolding and closing transmission assembly; A telescopic cylinder connected to the retractable support plate; And a moving rod, wherein the moving rod is connected to the output end of the telescopic cylinder, and the moving rod is also connected to the expansion and contraction transmission assembly.

4. The engine vibration test platform according to claim 3, characterized in that: The expansion and contraction transmission assembly includes a transmission unit, a transfer connecting plate and a transmission connecting rod, and the number of the transmission units is two sets; One set of transmission units is respectively connected to the transfer connecting plate, the transmission connecting rod and the retracting and extending driving assembly, and the other set of transmission units is respectively connected to the transfer connecting plate, the transmission connecting rod and the square enclosure frame.

5. The engine vibration test platform according to claim 4, characterized in that: One of the transmission units comprises: A driving slot plate, wherein the number of the driving slot plates is two, and the two driving slot plates are respectively fixedly connected to the retractable support plate and the retractable slide slot opening; A sliding plate, the sliding plate is slidably mounted in the driving slot plate and fixedly connected to the moving rod; Wherein, the driving slot plate is also provided with a guide slot, the sliding plate is fixedly provided with a guide slider, the guide slider is inserted into the guide slot and is slidably connected with the guide slot; And a movable connection module, wherein the movable connection module is connected to the driving slot plate and the sliding plate, and is respectively connected to the transfer connecting plate and the transmission connecting rod.

6. The engine vibration test platform according to claim 5, characterized in that: The active connection module includes: A rack, the rack is fixedly connected to the sliding plate and slidably connected to the driving slot plate; Gear 1, the gear 1 is rotatably mounted on the driving slot plate and meshed with the rack, and an expansion link 1 is fixedly mounted on the gear 1; A second unfolding link, one end of which is rotatably connected to the other end of the first unfolding link, wherein a test adjustment rod is further provided at the connection between the first unfolding link and the second unfolding link, and a plurality of protective baffle rods are further provided on the first unfolding link and the second unfolding link; And gear 2, the gear 2 is rotatably mounted on the transfer connecting plate and fixedly connected to the other end of the unfolding connecting rod 2, and one of the gears 2 is connected to the gear 2 on another set of the transmission unit through the transmission connecting rod.

7. The engine vibration test platform according to claim 1, characterized in that: The test equipment includes: An adjusting sleeve, the adjusting sleeve being connected to the unfolding and closing transmission assembly, wherein a positioning portion is provided on the adjusting sleeve, and the positioning portion is detachably connected to the unfolding and closing transmission assembly; A rotating sleeve, the rotating sleeve is sleeved on the adjusting sliding sleeve and is rotatably connected with the adjusting sliding sleeve; A telescopic control cylinder, wherein the telescopic control cylinder is fixedly connected to the rotating sleeve; And a test adjustment component, wherein the test adjustment component is connected to the telescopic control cylinder.

8. The engine vibration test platform according to claim 7, characterized in that: The test adjustment component includes: A top-tightening telescopic plate, the top-tightening telescopic plate passes through the telescopic control tube and is slidably connected with the telescopic control tube, and a plurality of positioning strips are evenly installed on the top-tightening telescopic plate; A circular slide plate, wherein the circular slide plate is slidably mounted in the telescopic control cylinder, and the circular slide plate is also fixedly connected to the inner wall of the telescopic control cylinder via a second spring; An L-shaped limiting plate, one end of which is fixedly connected to the circular sliding plate, and the other end of which is slidably connected to the tightening telescopic plate and detachably connected to the positioning strip; A pressing control rod, one end of which passes through the telescopic control cylinder and the second spring and is fixedly connected to the circular slide plate; And a test module, wherein the test module is fixedly connected to the end of the tightening telescopic plate.

9. The engine vibration test platform according to claim 8, characterized in that: The test module includes: An abutment buffer bin, the abutment buffer bin being fixedly connected to the end of the tightening telescopic plate; A sensor measuring device, the sensor measuring device is located in the abutment buffer bin and is slidably connected to the abutment buffer bin via a sliding structure; And a spring 1, two ends of which are fixedly connected to the abutment buffer bin and the sensor measuring device respectively.

10. The engine vibration test platform according to claim 9, characterized in that: Also includes: A detection display, wherein the detection display is fixedly mounted on the auxiliary control box; And a warning detector, which is fixedly mounted on the top-tightening telescopic plate and located at one end of the top-tightening telescopic plate away from the experimental platform, and the warning detector is also electrically connected to the detection display.

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