Novel double-tie-bar guide type damper testing machine

Abstract

The utility model provides a novel double-tie-bar guiding type damper testing machine which comprises a main machine frame body, the front end of the main machine frame body is fixedly connected with an auxiliary table, the upper end of the auxiliary table is fixedly connected with a driving servo actuator, and the front side of the inner end of the main machine frame body is provided with a guiding frame arm shaft. A first working plate is fixedly connected to the rear side of the guide frame arm shaft, guide wheels slidably connected to the upper portion of the main machine frame body are symmetrically arranged on the left side and the right side of the lower end of the guide frame arm shaft, and accurate displacement guiding is provided for the guide wheels by adopting the structure that guide rails are matched with grooves below the guide wheels; the guide frame arm shaft is matched with the guide rail through the guide wheel, so that the damper can be effectively ensured to do telescopic deformation motion strictly along the linear direction limited by the guide rail under the action of loading force, additional stress or errors caused by stress deviation of the damper are greatly reduced through the precise guide, the accuracy of a test result is ensured, and the test efficiency is improved. And the test data has higher reliability and reference value.

Description

Technical Field

[0001] This utility model relates to a novel double-pull-bar guided damper testing machine, belonging to the technical field of testing equipment. Background Technology

[0002] In the field of damper performance testing, guided damper testing machines play a crucial role. With the increasing demands for damper performance from industries such as construction and machinery, higher standards are being set for the accuracy, stability, and ease of operation of testing machines.

[0003] Chinese Patent No. CN218481230U discloses a four-pull-bar reference positioning frame for a damper testing machine. The frame includes an actuator base, pull bars, and a movable crossbeam. Four pull bars are fixedly installed on the inner side of the actuator base, symmetrically and evenly distributed. The movable crossbeam is movably mounted on the outer surface of the pull bars, with a crawling device on the crossbeam and a fixed fixture fixedly installed on it. This invention, by using four pull bars, improves the support for the movable crossbeam, eliminates the influence of frame deformation, improves the accuracy of the testing machine, enables high-intensity testing, and solves the problem of large coaxiality errors in the loading system.

[0004] Traditional guided damper testing machines have obvious defects in their guiding structure. Some testing machines use simple roller guides and lack a precise track matching system. During the test, the damper is easily affected by the loading force and will deviate, resulting in uneven force. This deviation will not only generate additional stress, causing the test data to be biased and unable to truly reflect the performance of the damper, but long-term deviation will also accelerate the wear of the testing machine components and reduce the service life of the equipment.

[0005] To address this, a novel double-lever guided damper testing machine is proposed. Utility Model Content

[0006] In view of this, the present invention provides a novel double-lever guided damper testing machine to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0007] The technical solution of this utility model is implemented as follows: A novel double-pull-bar guided damper testing machine includes a main frame body, an auxiliary platform fixedly connected to the front end of the main frame body, a drive servo actuator fixedly connected to the upper end of the auxiliary platform, a guide arm shaft provided on the inner front side of the main frame body, a first working plate fixedly connected to the rear side of the guide arm shaft, guide wheels symmetrically arranged on the left and right sides of the lower end of the guide arm shaft and slidably connected above the main frame body, a movable crossbeam provided on the inner rear side of the main frame body, a second working plate provided at the end of the movable crossbeam near the guide arm shaft, guide rails symmetrically fixedly connected on the left and right sides of the upper end of the main frame body, auxiliary beams symmetrically arranged on the left and right ends of the guide arm shaft and located directly above the guide wheels, auxiliary connecting rods symmetrically fixedly connected on the left and right ends of the auxiliary beams, linkage crossbars symmetrically fixedly connected on the left and right ends of the guide wheels, gear components rotatably connected to the ends of the two auxiliary connecting rods that are close to each other, and a rotating rod fixedly connected between the two corresponding gear components located furthest from the linkage crossbar.

[0008] More preferably, the linkage crossbar is connected to the gear component closest to its end, and a brush is fixedly connected to the outer side of the linkage, with the brush in frictional contact with the guide rail.

[0009] More preferably, a load sensor is provided between the second working plate and the moving crossbeam, and the guide rail matches the groove below the guide wheel.

[0010] More preferably, the inner end of the moving crossbeam is provided with a pin cylinder, and multiple pin holes are symmetrically opened on the left and right inner walls of the main frame body.

[0011] More preferably, the pin cylinder and the two corresponding horizontal pin ports are connected to each other.

[0012] More preferably, the lower end of the main frame body is fixedly connected to multiple supporting columns, which are distributed symmetrically from left to right.

[0013] More preferably, the front and rear ends of the auxiliary beam are symmetrically fixed with suction pump connectors, and the two suction pump connectors are located directly above the sweeping brush.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] I. This utility model adopts a structure that matches the guide rail with the groove below the guide wheel, providing precise displacement guidance for the guide wheel. During the test, the guide arm shaft cooperates with the guide wheel and the guide rail to effectively ensure that the damper performs telescopic deformation movement strictly along the straight line direction defined by the guide rail under the action of the applied force. This precise guidance greatly reduces the additional stress or error caused by the damper due to force deviation, ensuring the accuracy of the test results and making the test data more reliable and valuable for reference.

[0016] II. This utility model utilizes the sliding rotation of the guide wheel to drive the gear component to rotate via the linkage crossbar, thereby causing the connecting rod to rotate. The sweeping brush on the outside of the connecting rod continuously rubs against the guide rail, automatically cleaning any foreign objects that may be present on the guide rail. This self-cleaning mechanism effectively prevents foreign objects from affecting the displacement stability of the guide wheel, reduces damage caused by wear between the guide wheel and the guide rail due to foreign objects, extends the service life of key components of the equipment, and reduces equipment maintenance costs.

[0017] Third, the suction pump joints symmetrically arranged at both ends of the auxiliary beam generate suction after the pump is started, which will suck up the floating dust raised by the sweeping brush and prevent the floating dust from falling back onto the guide rail. This not only further ensures the cleanliness of the guide rail and guide wheel and maintains the good operating condition of the equipment, but also optimizes the testing environment, reduces the contamination of the testing equipment and sensors by floating dust, and helps to improve the accuracy of test data and the long-term reliability of the equipment.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main frame structure of the present invention;

[0021] Figure 2 This is a partial truncated enlarged structural diagram of the front part of the main frame body of this utility model;

[0022] Figure 3 This is a partial enlarged structural diagram of the rear section of the main frame body of this utility model;

[0023] Figure 4 This is an enlarged schematic diagram of the guide wheel structure of this utility model.

[0024] Reference numerals in the attached drawings: 1. Main frame body; 2. Supporting base column; 3. Auxiliary platform; 4. Drive servo actuator; 5. Guide arm shaft; 6. First working plate; 7. Guide wheel; 8. Guide rail; 9. Moving crossbeam; 10. Pin cylinder; 11. Pin port; 12. Second working plate; 13. Load sensor; 14. Auxiliary beam; 15. Suction pump connector; 16. Linkage crossbar; 17. Gear component; 18. Coupling rod; 19. Sweeping brush; 20. Auxiliary connecting rod. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figure 1-4 As shown, this utility model embodiment provides a novel double-lever guided damper testing machine, including a main frame body 1. An auxiliary platform 3 is fixedly connected to the front end of the main frame body 1, and a drive servo actuator 4 is fixedly connected to the upper end of the auxiliary platform 3. A guide arm shaft 5 is provided on the front inner side of the main frame body 1, and a first working plate 6 is fixedly connected to the rear side of the guide arm shaft 5. Guide wheels 7 are symmetrically arranged on the left and right sides of the lower end of the guide arm shaft 5 and slidably connected above the main frame body 1. A movable crossbeam 9 is provided on the rear inner side of the main frame body 1, with one end of the movable crossbeam 9 close to the guide arm shaft 5. A second working plate 12 is provided. Guide rails 8 are symmetrically fixedly connected to the upper left and right sides of the main frame body 1. Auxiliary frame beams 14 are symmetrically arranged at the left and right ends of the guide arm shaft 5, located directly above the guide wheel 7. Auxiliary connecting rods 20 are symmetrically fixedly connected to the left and right ends of the auxiliary frame beams 14. Linkage crossbars 16 are symmetrically fixedly connected to the left and right ends of the guide wheel 7. Gear components 17 are rotatably connected to the sections of the two auxiliary connecting rods 20 that are close to each other. A rotating rod 18 is fixedly connected between the two corresponding gear components 17 located furthest from the linkage crossbar 16. A brush 19 is fixedly connected to the outer side of the rotating rod 18.

[0029] A load sensor 13 is installed between the second working plate 12 and the moving crossbeam 9. The guide rail 8 matches the groove below the guide wheel 7. A pin cylinder 10 is installed at the inner end of the moving crossbeam 9. Multiple pin ports 11 are symmetrically opened on the left and right inner walls of the main frame body 1. The pin cylinder 10 and the two horizontally corresponding pin ports 11 are connected to each other. Multiple support columns 2 are fixedly connected to the lower end of the main frame body 1. The multiple support columns 2 are symmetrically distributed on the left and right.

[0030] Example 2

[0031] like Figure 1 , Figure 4 As shown, in one embodiment, the linkage crossbar 16 is connected to the gear 17 closest to its end, the sweeping brush 19 is in frictional contact with the guide rail 8, and the front and rear ends of the auxiliary beam 14 are symmetrically fixedly connected with suction pump connectors 15, with the two suction pump connectors 15 located directly above the sweeping brush 19.

[0032] The suction pump joints 15, symmetrically arranged at both ends of the auxiliary beam 14, generate suction after the pump is started, which sucks up the floating dust raised by the sweeping brush 19 and prevents the floating dust from falling back onto the guide rail 8. This not only further ensures the cleanliness of the guide rail 8 and the guide wheel 7 and maintains the good operating condition of the equipment, but also optimizes the testing environment, reduces the contamination of the testing equipment and sensors by floating dust, and helps to improve the accuracy of test data and the long-term reliability of the equipment.

[0033] In operation, this invention works as follows: First, a suitable fixture is selected, and the guide wheels 7 on both sides of the lower end of the guide arm shaft 5 are aligned with the guide rails 8 symmetrically arranged on the left and right sides of the upper end of the main frame body 1. The matching structure between the guide rails 8 and the grooves below the guide wheels 7 ensures good displacement guidance of the guide wheels 7. Simultaneously, the damper to be tested is installed between the first working plate 6 and the second working plate 12. During this process, the load sensor 13 can monitor the force generated during installation in real time. Before the test, the force displacement channel is zeroed; this operation generally only needs to be performed once to ensure the accuracy of subsequent test data. The signal is then sent. The load is applied to the drive servo actuator 4, a key component of the loading system. Operating according to preset parameters, the drive servo actuator 4 converts rotational motion into linear loading force through its internal mechanical structure, transmitting it to the guide arm shaft 5, which in turn applies it to the damper. Because the guide arm shaft 5 engages with the guide rail 8 via the guide wheel 7, and the guide frame prevents the servo actuator from rotating at high speeds, the damper, under the loading force, can only perform expansion and contraction deformation along the linear direction defined by the guide rail 8. During this process, a displacement sensor installed inside measures the damper's displacement changes in real time, a force sensor monitors the magnitude of the loading force, and strain gauges... Strain measurements are taken from key parts of the damper using sensors attached to it. Data collected by these sensors is transmitted to a computer via a data acquisition system. Simultaneously, during the sliding rotation of the guide wheel 7, the connecting crossbar 16 driving the connected gear 17 rotates. Through the meshing of the gears 17, the two connecting rods 18 before and after the guide wheel 7 rotate. The brushes 19 on the outer sides of the connecting rods 18 continuously rub against the guide rail 8, cleaning any foreign objects that may be present on the guide rail 8 to prevent them from affecting the displacement stability of the guide wheel 7. The dust stirred up by the brushes 19 is then pumped by suction devices symmetrically positioned at both ends of the auxiliary beam 14. Pump connector 15 generates suction to draw out the dust, preventing it from falling back onto guide rail 8. The moving crossbeam 9 can be positioned by auxiliary rollers and moves on the main frame body 1. Its driving force is provided by a reducer motor. A rack is installed on the main frame. The reducer motor adopts frequency conversion control. The speed can be adjusted by the frequency converter to control the no-load moving speed of the moving crossbeam 9. The movement start and stop of the moving crossbeam 9 are completed by an external wireless control box. The pin cylinder 10 is set inside the moving crossbeam 9. It pushes two pins to extend and retract through a double piston rod structure. A magnetic proximity switch can be installed on the pin cylinder 10 to determine whether the cylinder clamping and releasing are in place.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel double-lever guided damper testing machine, comprising a main frame body (1), characterized in that: An auxiliary platform (3) is fixedly connected to the front end of the main frame body (1). A drive servo actuator (4) is fixedly connected to the upper end of the auxiliary platform (3). A guide arm shaft (5) is provided on the front inner side of the main frame body (1). A first working plate (6) is fixedly connected to the rear side of the guide arm shaft (5). Guide wheels (7) that slide above the main frame body (1) are symmetrically arranged on the left and right sides of the lower end of the guide arm shaft (5). A movable crossbeam (9) is provided on the rear inner side of the main frame body (1). A second working plate (1) is provided at the end of the movable crossbeam (9) near the guide arm shaft (5). 2) Guide rails (8) are symmetrically fixedly connected to the upper left and right sides of the main frame body (1). Auxiliary frame beams (14) located directly above the guide wheel (7) are symmetrically arranged at the left and right ends of the guide arm shaft (5). Auxiliary connecting rods (20) are symmetrically fixedly connected to the left and right ends of the auxiliary frame beams (14). Linkage crossbars (16) are symmetrically fixedly connected to the left and right ends of the guide wheel (7). Gear components (17) are rotatably connected to the ends of the two auxiliary connecting rods (20) that are close to each other. A rotating rod (18) is fixedly connected between the two corresponding gear components (17) located furthest from the linkage crossbar (16).

2. The novel double-pull-bar guided damper testing machine according to claim 1, characterized in that: The linkage crossbar (16) is connected to the gear (17) closest to its end. A brush (19) is fixedly connected to the outside of the linkage rod (18). The brush (19) and the guide rail (8) are in frictional contact with each other.

3. The novel double-pull-bar guided damper testing machine according to claim 1, characterized in that: A load sensor (13) is provided between the second working plate (12) and the moving crossbeam (9), and the guide rail (8) matches the groove below the guide wheel (7).

4. The novel double-pull-bar guided damper testing machine according to claim 1, characterized in that: The inner end of the movable crossbeam (9) is provided with a pin cylinder (10), and multiple pin ports (11) are symmetrically opened on the left and right inner walls of the main frame body (1).

5. A novel double-pull-bar guided damper testing machine according to claim 4, characterized in that: The pin cylinder (10) and the two horizontally corresponding pin ports (11) are connected to each other.

6. The novel double-pull-bar guided damper testing machine according to claim 1, characterized in that: The lower end of the main frame body (1) is fixedly connected to multiple supporting columns (2), which are symmetrically distributed from left to right.

7. A novel double-pull-bar guided damper testing machine according to claim 1, characterized in that: The auxiliary beam (14) is symmetrically fixed with suction pump connectors (15) at both ends, and the two suction pump connectors (15) are located directly above the sweeping brush (19).

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