A portable semi-automatic adjustable vibrator installation device

Abstract

This utility model relates to the field of modal testing equipment technology, specifically disclosing a portable semi-automatic adjustable vibrator installation device; it includes a moving part, a mounting part, and a vibrator. The moving part forms a triangular stable structure through multiple support rods inclined at the bottom of the first mounting plate, and is equipped with universal wheels with locking function to achieve convenient movement and positioning; the worm gear mechanism of the mounting part is driven by a motor, and the forward / reverse rotation of the motor drives the worm gear to move up and down; the motor is powered by an external power supply; the second mounting plate carries the vibrator, and its height can be precisely adjusted to adapt to the excited structure in different spatial positions; the first mounting plate is equipped with a counterweight to meet the quality requirements of low-frequency excitation on the device, and the locking pin and locking groove cooperate to lock the height position. This device solves the problems of traditional vibrator installation devices being bulky, inconvenient to move, and limited in height adjustment. While ensuring structural stability and excitation accuracy, it significantly improves the flexibility and efficiency of modal testing, and is suitable for vibration testing needs in aerospace, civil engineering, and other fields.

Description

Technical Field

[0001] This utility model relates to the field of modal testing equipment technology, and in particular to a portable semi-automatic adjustable vibrator installation device. Background Technology

[0002] In modern engineering, modal testing is widely used in aerospace, automotive manufacturing, civil engineering, and other industries as an important means of studying the natural frequency characteristics of objects, verifying models, monitoring structural health, optimizing designs, diagnosing faults, and controlling vibrations. Taking aerospace as an example, aircraft must withstand complex dynamic loads during flight, and the modal characteristics of their structures are directly related to flight safety and performance. Modal testing can accurately obtain parameters such as the natural frequencies and mode shapes of aircraft structures, providing crucial information for optimized design.

[0003] Vibration exciters, as commonly used excitation devices in modal testing, play a crucial role in providing the required vibration excitation to the excited structure. However, as modal testing scenarios become increasingly complex and diverse, the limitations of traditional vibration exciter mounting devices are becoming more and more apparent. In actual tests, the excited structure may be at different spatial heights. For example, modal testing of large bridges requires excitation at different parts of the bridge (such as piers and the bridge body). If existing mounting devices cannot flexibly adjust the height, it is difficult to achieve precise excitation. In low-frequency excitation scenarios, according to vibration theory, the device on which the vibration exciter is mounted must have sufficient mass to ensure the stability of the excitation. However, traditional devices often struggle to balance mass and portability. Furthermore, when different parts of the same structure need to be excited multiple times, traditional mounting devices are inconvenient to move and cumbersome to adjust, resulting in low testing efficiency.

[0004] For example, the installation auxiliary mechanism for a thin oil vibrator disclosed in patent "CN202323157425, A Thin Oil Vibrator" uses a pin rod and pin hole to adjust the vertical height. This method can only achieve discontinuous adjustment and cannot fully meet the installation requirements of the vibrator when facing complex height requirements, thus limiting its applicability. Another example is some large fixed vibrator installation platforms, which, although providing stable support, are difficult to move between different test sites due to their large size and heavy weight, greatly limiting their application scenarios. Utility Model Content

[0005] In view of this, this utility model provides a portable semi-automatic adjustable vibrator installation device to solve the problem that traditional devices are bulky, inconvenient to move, and have a fixed height, making it difficult to adapt to the multi-scenario excitation needs in modal testing.

[0006] This utility model provides a portable semi-automatic adjustable vibrator mounting device, comprising: a movable part having a first mounting plate on top and a movable frame that can move based on the ground; a mounting part including a worm gear mechanism disposed on the first mounting plate and a second mounting plate disposed on the top of the worm, wherein the worm gear is further provided with a locking mechanism; wherein the worm gear mechanism is driven by a motor disposed on the first mounting plate; wherein the vibrator is disposed on the second mounting plate.

[0007] Preferably, the movable frame includes a support rod disposed at the bottom of the first mounting plate; there are at least three support rods, namely a first support rod, a second support rod, and a third support rod; wherein, all the support rods are inclined.

[0008] Preferably, the support rod is further provided with a first mounting block and a second mounting block at both ends; the support rod is fixedly connected to the first mounting plate through the first mounting block; and the support rod is provided with casters through the second mounting block.

[0009] Preferably, the caster wheel includes a caster wheel body, a swivel wheel, and a locking block hinged to the caster wheel body; the locking block has a first protrusion and a second protrusion on both sides; the locking block can rotate based on the caster wheel body, so that the first protrusion or the second protrusion abuts against the caster wheel to restrict the movement of the caster wheel.

[0010] Preferably, the support rod further includes a fixed support rod; both ends of the fixed support rod are provided with connecting blocks for connection with other support rods; one end of the fixed support rod is connected to the first support rod, the second support rod, or the third support rod, and the other end is fixedly connected to the first support rod, the second support rod, the third support rod, or other fixed support rods.

[0011] Preferably, the locking mechanism includes an auxiliary moving block fixed to the first mounting plate and a locking pin disposed on the auxiliary moving block; the first mounting plate is provided with a threaded hole through which the screw passes, and the auxiliary moving block is provided with a threaded hole coaxially disposed with the threaded hole of the first mounting plate.

[0012] Preferably, the degree of freedom of the worm in the worm gear mechanism is restricted by tightening the locking pin.

[0013] Preferably, the worm gear is also provided with locking grooves at intervals.

[0014] Preferably, the omnidirectional wheel body is further provided with a drive block at the end away from the swivel wheel.

[0015] Preferably, a counterweight is provided on one side of the first mounting plate to balance the center of gravity of the vibrator during operation.

[0016] The portable, semi-automatic, adjustable vibrator installation device provided by this utility model has the following advantages:

[0017] This portable, semi-automatic, adjustable vibrator mounting device effectively overcomes the limitations of traditional devices through innovative structural design. The moving part features a lightweight design and is equipped with casters. Combined with inclined support rods and fixed support rods, it ensures convenient overall movement of the device while enhancing load-bearing capacity through a triangular stabilizing structure. The worm gear mechanism, in conjunction with a motor, enables precise height adjustment, quickly adapting to excited structures of different heights, significantly improving efficiency compared to traditional manual adjustment methods. A counterweight block on one side of the first mounting plate can be flexibly added or removed according to low-frequency excitation requirements, ensuring device quality without compromising portability. The locking mechanism, with its auxiliary moving block and locking pin, securely locks the worm gear, preventing device wobbling during testing and ensuring the accuracy of excitation data. The overall device achieves a harmonious balance of quality, portability, and adjustability, greatly improving the efficiency and reliability of modal testing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0019] Figure 1 This is a schematic diagram of a portable, semi-automatic adjustable vibrator installation device.

[0020] Figure 2 This is a three-dimensional structural diagram of a portable, semi-automatic, adjustable vibrator installation device.

[0021] Figure 3 This is a partial structural diagram of a portable, semi-automatic, adjustable vibrator installation device.

[0022] Figure 4 This is another partial structural diagram of a portable, semi-automatic adjustable vibrator installation device;

[0023] Figure 5 This is another partial structural diagram of a portable, semi-automatic adjustable vibrator installation device;

[0024] Parts and their numbers in the diagram:

[0025] 100-Moving part, 310-First mounting plate, 311-Motor, 312-Counterweight block, 321-Auxiliary moving block, 322-Locking pin, 331-First support rod, 332-Second support rod, 333-Third support rod, 334-Fixed support rod, 335-Connecting block, 336-First mounting block, 337-Second mounting block, 341-Universal wheel body, 342-Rotating wheel, 343-Locking block, 344-First protrusion, 345-Second protrusion, 346-Drive block;

[0026] 200-Mounting part, 210-Worm gear mechanism, 211-Worm, 212-Locking groove, 220-Second mounting plate;

[0027] 300-Vibrator. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0029] Example 1

[0030] Please see Figure 1This utility model provides a portable semi-automatic adjustable vibrator installation device; in the study of object structures, their inherent frequency characteristics are very important, and modal testing has been applied to various fields.

[0031] Modal testing plays a crucial role in verifying models, monitoring structural health, optimizing design, diagnosing faults, and controlling vibration. Various tools and equipment have been invented, manufactured, and put into use to meet evolving needs. Vibration exciters are currently one of the most widely used excitation devices in modal testing, but they are heavy and their operating environment varies depending on the structure being excited.

[0032] For example, the excited structure may be at different spatial heights, requiring low-frequency excitation, which necessitates that the equipment installing the vibrator be sufficiently heavy. Alternatively, it may require multiple excitations at different structural locations. Traditional vibrator installation devices are often bulky, inconvenient to move and carry, and have significant limitations due to their intended use.

[0033] Therefore, an installation device that possesses both quality characteristics and is easy to carry and move, and whose height can be adjusted according to usage needs, can greatly meet the needs of test personnel.

[0034] Therefore, please see Figure 1 and Figure 2 This embodiment provides a portable semi-automatic adjustable vibrator mounting device. The mounting device includes a movable part 100 and a mounting part 200 disposed on the movable part 100. The top of the movable part 100 is provided with a first mounting plate 310 and a movable frame that can move based on the ground. The mounting part 200 includes a worm gear mechanism 210 disposed on the first mounting plate 310 and a second mounting plate 220 disposed on the top of the worm gear 211. The worm gear mechanism 210 is also provided with a locking mechanism. The worm gear mechanism 210 is driven by a motor 311 disposed on the first mounting plate 310. The vibrator 300 is disposed on the second mounting plate 220.

[0035] In use, the tester can first move the movable frame to the appropriate position of the installation device on the excited structure. Then, the motor 311 is started, driving the worm gear mechanism 210. Due to the characteristics of the worm gear mechanism 210, the worm 211 rises and falls under the drive of the worm, thereby adjusting the height of the second mounting plate 220 on top of the worm 211 and the exciter 300 mounted on the second mounting plate 220 to accommodate excited structures of different heights. Once the exciter 300 reaches the appropriate height, it is locked using the locking mechanism on the worm gear mechanism 210 to ensure the height stability of the exciter 300 during the test. If low-frequency excitation is required, the installation device has sufficient mass to meet the requirements of low-frequency excitation. If multiple excitations are needed at different structural locations, simply unlock the locking mechanism, readjust the height of the exciter 300, and move the movable frame to the corresponding position. This installation device is simple to operate, effectively improves the efficiency of modal testing, and meets the needs of testers in different scenarios.

[0036] Furthermore, the entire device is detachable for easy carrying; the worm gear mechanism 210 is controlled to lift and lower via a motor 311, which can satisfy the excitation of the vibrator 300 for structural components of different heights; the moving part 100 can move the entire device in space more quickly and effortlessly; the locking mechanism can compensate for the insufficient locking ability of the worm gear mechanism 210 itself, so that the vibrator 300 greatly reduces the amount of sway of the worm 211 during vibration.

[0037] Further, please see Figure 1 The movable frame includes a support rod disposed at the bottom of the first mounting plate 310; there are at least three support rods, namely a first support rod 331, a second support rod 332 and a third support rod 333; wherein, all the support rods are inclined.

[0038] The support rod is further provided with a first mounting block 336 and a second mounting block 337 at both ends; the support rod is fixedly connected to the first mounting plate 310 through the first mounting block 336; the support rod is provided with casters through the second mounting block 337.

[0039] Please see Figure 1 The support rod further includes a fixed support rod 334; both ends of the fixed support rod 334 are provided with connecting blocks 335 for connecting with other support rods; one end of the fixed support rod 334 is connected to the first support rod 331, the second support rod 332 or the third support rod 333, and the other end is fixedly connected to the first support rod 331, the second support rod 332, the third support rod 333 or other fixed support rods 334.

[0040] The installation steps of the mobile frame are as follows: First, place the first mounting plate 310 horizontally on a suitable operating surface to ensure the stability of subsequent installation. Next, fix the first mounting blocks 336 of the three support rods to the corresponding positions of the first mounting plate 310, ensuring that the inclination angle of each support rod meets the design requirements so that the entire mobile frame can maintain balance and stability during support. Then, connect the connecting block 335 at one end of the fixed support rod 334 to the already installed first support rod 331, second support rod 332, or third support rod 333. Then fix the connecting block 335 at the other end of the fixed support rod 334 to other suitable support rods or fixed support rods 334, thereby constructing a stable support frame structure. Finally, install the casters on the second mounting blocks 337 of the support rods to complete the installation of the entire mobile frame. After installation, check whether all connections are secure and whether the casters can rotate flexibly to ensure the safety and reliability of the mobile frame during use.

[0041] Further, please see Figure 4 and Figure 5 The caster wheel includes a caster wheel body 341, a swivel wheel 342, and a locking block 343 hinged to the caster wheel body 341. The locking block 343 has a first protrusion 344 and a second protrusion 345 on both sides. The locking block 343 can rotate based on the caster wheel body 341, so that the first protrusion 344 or the second protrusion 345 abuts against the caster wheel to restrict the movement of the caster wheel.

[0042] When the mobile frame needs to be moved, the locking block 343 is rotated until neither the first protrusion 344 nor the second protrusion 345 abuts against the caster 342. At this point, the caster wheel can rotate freely, and the mobile frame can be easily moved to change its position and direction. Once the mobile frame reaches the designated position, the locking block 343 is rotated so that either the first protrusion 344 or the second protrusion 345 abuts against the caster 342, increasing the friction of the caster wheel and thus restricting the movement of the caster wheel. This ensures that the mobile frame remains stable during use and will not easily slip due to external forces. Simultaneously, the hinged design between the locking block 343 and the caster wheel body 341 makes the operation simple and quick, improving work efficiency.

[0043] Furthermore, the omnidirectional wheel body 341 is also provided with a drive block 346 at the end away from the swivel wheel 342.

[0044] In use, the drive block 346 increases the driving area of ​​the locking block 343, making it easier for the operator to drive the locking block 343 to rotate, thereby restricting the rotation of the caster wheel body 341 and limiting the movement of the mobile frame. This design eliminates the need for the operator to manually operate the locking block 343 by bending over; they can easily control its rotation by simply stepping on the drive block 346, reducing operational inconvenience and labor intensity. Furthermore, the drive block 346 allows for more precise operation and faster locking and unlocking of the caster wheel, further enhancing the flexibility and convenience of the mobile frame. In practical applications, the operator can adjust the movement of the mobile frame at any time using the drive block 346, significantly improving work efficiency and smoothness.

[0045] Further, please see Figure 3 The locking mechanism includes an auxiliary moving block 321 fixed to the first mounting plate 310 and a locking pin 322 disposed on the auxiliary moving block 321. The first mounting plate 310 is provided with a threaded hole through which the screw 211 passes, and the auxiliary moving block 321 is provided with a threaded hole coaxially disposed with the threaded hole of the first mounting plate 310. By tightening the locking pin 322, the degree of freedom of the worm 211 in the worm gear mechanism 210 is restricted.

[0046] In use, first pass the worm 211 through the threaded holes on the first mounting plate 310 and the auxiliary moving block 321 to position the worm 211 of the worm gear mechanism 210 appropriately. Next, move the moving frame to the designated installation position using the casters, and secure it using the locking block 343 and the rotating wheel 342. Then, observe the state of the worm 211. Once its position meets the installation requirements, use a tool to tighten the locking pin 322, ensuring it firmly abuts against the worm 211. This effectively restricts the worm 211's degree of freedom, ensuring the worm gear mechanism 210 operates stably during subsequent use without unnecessary shaking or displacement, thus guaranteeing the stability and reliability of the entire moving frame installation structure.

[0047] Furthermore, the worm gear 211 is also provided with locking grooves 212 at intervals.

[0048] The locking groove 212 serves to allow the end of the locking pin 322 to embed into the locking groove 212 when the locking pin 322 is tightened against the worm gear 211, further enhancing the locking effect. The spacing of the locking groove 212 can be adjusted according to different installation requirements and the position of the worm gear 211, flexibly selecting the insertion position of the locking pin 322 to adapt to diverse installation scenarios. Simultaneously, the presence of the locking groove 212 prevents the locking pin 322 from slipping or loosening due to vibration or other factors during long-term use, making the locking more secure and stable, providing a more reliable guarantee for the installation of the mobile frame and the normal operation of the worm gear mechanism 210.

[0049] Furthermore, a counterweight 312 is provided on one side of the first mounting plate 310 to balance the center of gravity of the vibrator 300 during operation.

[0050] In this embodiment, the counterweight 312 is used to balance the center of gravity of the vibrator 300 during operation, making the entire mobile frame more stable during operation. Stable operation reduces additional vibration and swaying caused by an unstable center of gravity, reducing wear and impact on the worm gear 211 and other related components, and extending the service life of the equipment. Simultaneously, it improves the stability and accuracy of the vibrator 300's operation, enabling the entire device to better complete its intended tasks, reducing the probability of malfunctions, lowering maintenance costs and downtime, and ensuring efficient production or work.

[0051] As shown in the figure, a mounting device for a vibrator mainly includes a vibrator 300, a counterweight 312, a worm gear mechanism 210, and a motor 311. The motor 311 is mounted and fixed on a first mounting plate 310 by nuts and screws. Holes are pre-drilled on the first mounting plate 310 during machining according to specific requirements.

[0052] The installation of counterweight 312 requires two sets of M24 bolts and nuts. The installation of the worm gear mechanism 210 requires four sets of M24 bolts and nuts, sharing two sets with the counterweight 312. The installation of the motor 311 requires four sets of M8 bolts and nuts. The locking mechanism is welded to the first mounting plate 310. The first support rod 331, second support rod 332, and third support rod 333 are of the same specification. The connection positions with the first mounting plate 310 are pre-drilled during machining. They are installed on the first mounting plate 310, requiring a total of six sets of M24 bolts and nuts. The casters are fixedly installed on the support rods, requiring a total of six sets of M10 bolts and nuts.

[0053] The specific installation steps are as follows:

[0054] first step

[0055] Install the casters and fix them to the first support rod 331, the second support rod 332, and the third support rod 333 respectively using M10 bolts and nuts.

[0056] Step 2

[0057] The support rods with the casters installed are fixed to the first mounting plate 310 with M24 bolts and nuts respectively;

[0058] Step 3

[0059] Use a fixed support rod 334 to press against the root of the first support rod 331, the second support rod 332, or the third support rod 333. Insert the cylindrical head of the connecting block 335 at one end of the fixed support rod 334 into the pre-drilled hole on the fixed support rod 334, and press against the root of the support rod at the other end.

[0060] Step 4

[0061] The worm 211 of the worm gear mechanism 210 is passed through the holes reserved on the first mounting plate 310 and the locking mechanism, and is installed on the first mounting plate 310 with M24 bolts and nuts;

[0062] Step 5

[0063] The counterweight 312 is mounted on the first mounting plate 310 using M24 bolts and nuts;

[0064] Step 6

[0065] The rotor of motor 311 is connected to worm gear mechanism 210 via keyway and fixed to the first mounting plate 310 by M8 bolts and nuts;

[0066] Step 7

[0067] The entire device is completed and ready for use once the vibrator 300 is fixedly installed on the second mounting plate 220 above the worm gear mechanism 210.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable semi-automatic adjustable shaker mounting apparatus, characterized by, include: The movable part (100) has a first mounting plate (310) on top and a movable frame that can move based on the ground; The mounting part (200) includes a worm gear mechanism (210) disposed on the first mounting plate (310) and a second mounting plate (220) disposed on the top of the worm (211), and the worm gear mechanism (210) is further provided with a locking mechanism; The worm gear mechanism (210) is driven by a motor (311) mounted on the first mounting plate (310); The vibrator (300) is disposed on the second mounting plate (220).

2. A portable semi-automatic adjustable shaker mounting apparatus according to claim 1, wherein, The movable frame includes a support rod disposed at the bottom of the first mounting plate (310); The support rods are provided at least three, namely the first support rod (331), the second support rod (332) and the third support rod (333); wherein, the support rods are all inclined.

3. A portable semi-automatic adjustable shaker mounting apparatus according to claim 2, wherein, The support rod is also provided with a first mounting block (336) and a second mounting block (337) at both ends; The support rod is fixedly connected to the first mounting plate (310) via the first mounting block (336); The support rod is equipped with casters via the second mounting block (337).

4. A portable semi-automatic adjustable shaker mounting apparatus as claimed in claim 3, wherein, The caster wheel includes a caster wheel body (341), a swivel wheel (342), and a locking block (343) hinged to the caster wheel body (341); The locking block (343) has a first protrusion (344) and a second protrusion (345) on both sides respectively; The locking block (343) can rotate based on the caster body (341) so that the first protrusion (344) or the second protrusion (345) abuts against the caster to restrict the movement of the caster.

5. A portable semi-automatic adjustable shaker mounting apparatus as claimed in claim 2, wherein, The support rod also includes a fixed support rod (334); Both ends of the fixed support rod (334) are provided with connecting blocks (335) that connect with other support rods; One end of the fixed support rod (334) is connected to the first support rod (331), the second support rod (332) or the third support rod (333), and the other end is fixedly connected to the first support rod (331), the second support rod (332), the third support rod (333) or other fixed support rod (334).

6. A portable semi-automatic adjustable shaker mounting apparatus as claimed in claim 1, wherein, The locking mechanism includes an auxiliary moving block (321) fixed on the first mounting plate (310) and a locking pin (322) disposed on the auxiliary moving block (321); The first mounting plate (310) is provided with a threaded hole for the locking pin (322) to pass through, and the auxiliary moving block (321) is provided with a threaded hole coaxially arranged with the threaded hole of the first mounting plate (310).

7. A portable semi-automatic adjustable shaker mounting apparatus as claimed in claim 6, wherein, By tightening the locking pin (322), the degree of freedom of the worm (211) in the worm gear mechanism (210) is restricted.

8. The portable semi-automatic adjustable shaker mounting device of claim 1, wherein, The worm (211) is also provided with locking grooves (212) at intervals.

9. A portable semi-automatic adjustable shaker mounting apparatus as claimed in claim 4, wherein, The omnidirectional wheel body (341) is also provided with a drive block (346) at the end away from the swivel wheel (342).

10. The portable semi-automatic adjustable shaker mounting apparatus of claim 1, wherein, One side of the first mounting plate (310) is also provided with a counterweight (312) to balance the gravity center of the exciter (300) when working.

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