Hydraulic motor output shaft with vibration detection mechanism

Abstract

The present invention relates to the field of hydraulic motor output shafts, and discloses a hydraulic motor output shaft with a vibration detection mechanism, comprising a main body, a shaft body installed in the middle of the main body, a slide groove opened in the middle of the shaft body, a fixing buckle provided at the slide groove in the shaft body, a detection component 1 and a detection component 2 respectively provided on the upper and lower sides of the fixing buckle, the detection component 1 mainly comprises a mass block, a separator, a marking rod 1 and a multi-stage spring, the strength of the multi-stage spring is gradiently distributed, and the hydraulic motor output shaft with a vibration detection mechanism provided by the present invention has a detection component 1 and a detection component 2, which can perform frequency band detection on the high-frequency small-amplitude vibration and low-frequency large-amplitude vibration generated by the output shaft, so as to avoid the shortening of the device life due to the failure to timely troubleshoot, and adopts a purely mechanical mechanism, which can not only reduce costs and facilitate maintenance, but also facilitate observation, will not be affected by electromagnetic interference, and has a cumulative damage function.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic motor output shafts, in particular to a hydraulic motor output shaft with a vibration detection mechanism. Background Art

[0002] In the patent application with application announcement number CN118775375B, it includes a detection platform, the top of which is provided with a clamping slide rail, a clamping slider is slidably provided on the clamping slide rail, a motor bracket is provided on the top of the clamping slider, the top of the detection platform is provided with a clamping mechanism for locating the center of the output shaft and fixing the output shaft, the top of the detection platform and located on the side of the clamping mechanism away from the clamping slide rail is provided with a detection mechanism for vibration detection of the output shaft, and the detection mechanism is provided with a load mechanism for simulating the use environment of the output shaft. The advantages are: the output shaft of the hydraulic motor can be positioned and clamped by the clamping mechanism, hydraulic motors of different sizes can be clamped and fixed, and the operator's operating steps can be reduced, thereby improving detection efficiency and accuracy.

[0003] In the prior art, including the aforementioned patents, vibration detection of a hydraulic motor's output shaft often requires the motor to be completely disassembled and installed on a testing device. While this can result in more accurate measurement data, in actual use, the motor is typically removed and tested only after it has impacted operation or reached its service life. This, in turn, can damage the driven equipment or shorten its service life due to the vibration generated by the hydraulic motor's output shaft. Existing patents also include solutions that install detection components on the outside of the output shaft. However, traditional electronic sensor detection suffers from high cost, poor interference resistance, and complex structure. Existing mechanical detection patents often focus on single-frequency detection or simple amplitude indication, lacking multi-dimensional vibration analysis and cumulative damage feedback mechanisms for hydraulic motors. Furthermore, it is worth noting that the wear level of the output shaft can only be estimated by recording usage time, usage, and current operating status without disassembling the motor. This requires a high level of experience from the practitioner and does not provide a direct and clear understanding of the current output shaft usage. Summary of the Invention

[0004] The problem to be solved by the present invention is that existing mechanical detection patents mostly focus on single frequency detection or simple amplitude indication, and lack multi-dimensional vibration analysis and cumulative damage feedback mechanism for hydraulic motors.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an output shaft of a hydraulic motor with a vibration detection mechanism, comprising a main body, a shaft body installed in the middle of the main body, a slide groove is opened in the middle of the shaft body, a fixing buckle is provided at the slide groove in the shaft body, and a detection component 1 and a detection component 2 are respectively provided on the upper and lower sides of the fixing buckle, the detection component 1 mainly comprises a mass block, a separator, a marking rod 1 and a multi-stage spring, the strength of the multi-stage spring is gradiently distributed, the detection component 2 mainly comprises a pendulum, a pointer, a dial and a friction pad, the pointer is in close contact with the friction pad, the detection component 2 also comprises a marking rod 2, the detection component 1 comprises a mounting block 1, the mounting block 1 is fixedly arranged on the upper half of the fixing buckle, a pad is fixedly arranged on the inner bottom end of the mounting block 1, a mass block is provided on one side of the pad, the mass block is slidably connected to the mounting block 1, and shock-absorbing springs are provided on both sides of the mass block, one of the shock-absorbing springs is located on the outer side of the pad and is in contact with the mounting block The cam is fixedly connected to the mounting block, and the other end of the buffer spring is fixedly connected to the mass block, and the other end of the buffer spring is fixedly provided with a separator, and the separator is provided with two in total, and the separators are both slidably connected to the mounting block, and a circular hole is opened in the middle of the separator, and the buffer spring is provided with a spring one and a spring two on one side of the separator, and the spring one and the spring two are respectively installed on one side of the separator, and a marking rod one is provided at the circular hole of the separator, and a cover is provided at the end of the marking rod one, and the cover is connected to the mounting block one by a thread, and a clamping block is provided between the cover and the marking rod one, and the marking rod one can move outward after being struck by external force, and the marking rod one is fixedly connected to the mass block on one side of the mounting block one, and the detection component two includes a mounting block two, and the mounting block two is configured as a U-shape, and a pendulum is rotatably provided on both sides of the mounting block two, and a pointer is fixedly provided on the side of the pendulum close to the mounting block two, and a dial is fixedly provided on both sides of the mounting block two.

[0006] Preferably, a mounting frame is provided around the shaft body, and the mounting frame includes a fixing ring, which is fixedly connected to the main body by bolts and nuts. Two fixing grooves are provided on the surface of the fixing ring, and the bolts pass through the fixing grooves. A mounting shaft is fixedly provided on the outer surface of the fixing ring.

[0007] Preferably, the fixing buckle is slidably connected to the mounting shaft, the fixing buckles are fixed by bolts, the fixing buckle is slidably connected to the shaft body, and the fixing buckle does not rotate with the shaft body.

[0008] Preferably, the scale plate is configured to be semicircular and fixedly connected to the second mounting block by bolts. A friction pad is fixedly provided on the surface of the scale plate on one side of the scale, and a friction block with a harderness higher than that of the friction pad is provided between the pointer and the friction pad.

[0009] Preferably, a fixing plate is fixed between the pendulums, the fixing plate is fixed on one of the pendulums, and the other end is slidably connected to the other pendulum, springs three are fixed on both sides of the fixing plate, both ends of the spring three are fixedly connected to the mounting block two by bolts, and a marking rod two is slidably provided inside the lower end of the pendulum.

[0010] Preferably, the marking rod 2 is provided with multi-level blocks, and a fixing plug is provided on the side of the marking rod 2 away from the main body, and a plurality of anti-slip washers are fixedly provided inside the fixing plug. The fixing plug is fixedly connected to the pendulum by bolts, and the anti-slip washers clamp the marking rod 2 so that the marking rod 2 will not be displaced before being subjected to external force.

[0011] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0012] (1) Under the action of detection component 1 and detection component 2, the high-frequency small-amplitude vibration and low-frequency large-amplitude vibration generated by the output shaft can be detected in different frequency bands within one operation, so as to avoid the failure to eliminate faults in time due to the single detection item, which in turn shortens the life of the device. In addition, the detection components all adopt pure mechanical mechanisms, which not only reduces the cost during manufacturing, but also improves the convenience during maintenance, and the convenience during observation will not be reduced. Compared with electronic sensors, pure mechanical structures are not affected by electromagnetic interference, which allows the device to be used in more places and improves the adaptability of the device. It is worth mentioning that the detection component also has the function of visualizing cumulative damage, which plays a similar role as a "vibration energy integrator" and is not affected by electromagnetic interference, thereby further improving the convenience during observation and thus extending its service life to a certain extent.

[0013] (2) With the cooperation of the mounting bracket and the fixing buckle, when the output shaft vibrates, the detection component can be prevented from transmitting more vibration to the main body shell when detecting vibration, thereby avoiding shortening the life of the device due to the detection component itself. In addition, with their cooperation, when the output shaft vibrates radially, the output shaft can be limited to a suitable range and the vibration can be recorded. This allows workers to observe in time, and there is no need to use high-precision tools. Only a feeler gauge is needed to detect the distance between the output shaft and the fixing buckle, and to observe the offset of the fixing ring. This can improve the detection range of the device without excessively increasing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the detection assembly of the present invention and its related installation structure;

[0016] Figure 3 This is a schematic cross-sectional structural diagram of a detection component of the present invention;

[0017] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0018] Figure 5 This is an enlarged cross-sectional structural diagram of a detection component of the present invention;

[0019] Figure 6 This is a structural diagram of the second detection component of the present invention;

[0020] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0021] Figure 8 This is a schematic cross-sectional view of the second detection component of the present invention;

[0022] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point C in the middle.

[0023] In the figure: 1. Main body; 2. Shaft; 3. Mounting frame; 301. Fixing ring; 302. Fixing groove; 303. Mounting shaft; 4. Fixing buckle; 5. Detection component one; 501. Mounting block one; 502. Pad; 503. Mass block; 504. Shock-absorbing spring; 505. Spring one; 506. Spring two; 507. Separator; 508. Marking rod one; 509. Cover; 6. Detection component two; 601. Mounting block two; 602. Pendulum; 603. Pointer; 604. Dial; 6041. Friction pad; 605. Fixing plate; 606. Spring three; 607. Marking rod two; 608. Fixing plug; 609. Anti-slip washer. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0025] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “including” or “comprising” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 9As shown, the present invention provides a hydraulic motor output shaft with a vibration detection mechanism, including a main body 1, a shaft body 2 installed in the middle of the main body 1, a slide groove is opened in the middle of the shaft body 2, a fixing buckle 4 is provided at the slide groove in the shaft body 2, and a detection component 1 5 and a detection component 2 6 are respectively provided on the upper and lower sides of the fixing buckle 4. The detection component 1 5 mainly includes a mass block 503, a separator 507, a marking rod 1 508 and a multi-stage spring. The strength of the multi-stage spring is gradiently distributed. The detection component 2 6 mainly includes a pendulum 602, a pointer 603, a dial 604 and a friction pad 6041. The pointer 60 3 is in close contact with the friction pad 6041, the detection component 2 6 also includes a marking rod 2 607, the detection component 1 5 includes a mounting block 1 501, the mounting block 1 501 is fixedly set on the upper half of the fixing buckle 4, the inner bottom end of the mounting block 1 501 is fixedly provided with a pad 502, a mass block 503 is provided on one side of the pad 502, the mass block 503 is slidably connected to the mounting block 1 501, and a shock absorbing spring 504 is provided on both sides of the mass block 503, one of the shock absorbing springs 504 is located on the outside of the pad 502 and is fixedly connected to the mounting block 1 501, and the shock absorbing spring 504 is provided on both sides of the mass block 503. The other one is fixedly connected to the mass block 503, and the other end of the cushioning spring 504 is fixedly provided with a separator 507. There are two separators 507 in total, and the separators 507 are both slidably connected to the mounting block 1 501. A circular hole is opened in the middle of the separator 507. The cushioning spring 504 is provided with a spring 1 505 and a spring 2 506 on the side close to the separator 507. The spring 1 505 and the spring 2 506 are respectively installed on one side of the separator 507. A marking rod 1 508 is provided at the circular hole of the separator 507, and a cover 509 is provided at the end of the marking rod 1 508. The cover 5 09 is connected to the mounting block 1 501 by a threaded connection, a clamping block is provided between the cover 509 and the marking rod 1 508, the marking rod 1 508 can move outward after being hit by an external force, the marking rod 1 508 is located on one side of the mounting block 1 501 and is fixedly connected to the mass block 503, the detection component 2 6 includes a mounting block 2 601, the mounting block 2 601 is set in a U shape, and a pendulum 602 is rotatably provided on both sides of the mounting block 2 601, and a pointer 603 is fixedly provided on one side of the pendulum 602 close to the mounting block 2 601, and a dial 604 is fixedly provided on both sides of the mounting block 2 601.

[0027] A mounting frame 3 is arranged around the shaft body 2, and the mounting frame 3 includes a fixing ring 301. The fixing ring 301 is fixedly connected to the main body 1 by bolts and nuts. Two fixing grooves 302 are provided on the surface of the fixing ring 301, and the bolts pass through the fixing grooves 302. A mounting shaft 303 is fixedly provided on the outer surface of the fixing ring 301.

[0028] The fixing buckle 4 is slidably connected to the installation shaft 303 , and the fixing buckle 4 is fixed by bolts. The fixing buckle 4 is slidably connected to the shaft body 2 , and the fixing buckle 4 does not rotate with the shaft body 2 .

[0029] The dial 604 is set to be semicircular and is fixedly connected to the mounting block 2 601 by bolts. A friction pad 6041 is fixedly set on the surface of the dial 604 on one side of the scale, and a friction block with a harderness higher than that of the friction pad 6041 is set between the pointer 603 and the friction pad 6041.

[0030] A fixing plate 605 is fixed between the pendulums 602. The fixing plate 605 is fixed on one of the pendulums 602, and the other end is slidably connected to the other pendulum 602. Spring three 606 is fixed on both sides of the fixing plate 605. Both ends of the spring three 606 are fixedly connected to the mounting block two 601 by bolts. A marking rod two 607 is slidably provided inside the lower end of the pendulum 602.

[0031] The marking rod 2 607 is provided with multiple blocks. A fixing plug 608 is provided on the side of the marking rod 2 607 away from the main body 1. Several anti-slip washers 609 are fixed inside the fixing plug 608. The fixing plug 608 is fixedly connected to the pendulum 602 by bolts. The anti-slip washers 609 clamp the marking rod 2 607 so that the marking rod 2 607 will not be displaced before being subjected to external force.

[0032] The working principle and use process of the present invention: When the output shaft vibrates, there are three situations:

[0033] When the output shaft generates low-frequency and large-scale vibrations: the pendulum 602 swings due to phase lag, and the amplitude of the output shaft can also be amplified, so that the pointer 603 behind it can swing on the friction pad 6041 and scratch the friction pad 6041. This can be used to observe in real time whether the amplitude of the output shaft is within a safe range, and the scratches on the friction pad 6041 can be used to record the accumulated loss. In addition, the spring three 606 can reduce the force of the pendulum 602 after the output shaft stops vibrating, so as to avoid resonance and affect the normal operation of the output shaft. If the amplitude is too large, the marking rod two 607 can use the shell of the main body 1 to force the marking rod two 607 to move outward when the pendulum 602 is close to the main body 1. After the machine stops, the maximum amplitude of the output shaft during this operation can be known by observing the offset of the marking rod two 607.

[0034] When the output shaft generates a high-frequency, small-amplitude vibration, the mass block 503 initially vibrates slightly. As the vibration frequency continues to increase and reaches the filtering upper limit of the shock-absorbing spring 504, the mass block 503, due to the impact with the cushion block 502 and the vibration, generates a greater reverse force. At this time, the marking rod 1 508 repeatedly extends from the cover 509. At this time, the color of the exposed portion of the marking rod 1 508 can be observed to determine whether the vibration is within the safe range. At this time, the pendulum 602 below does not produce a large deflection due to its small amplitude.

[0035] When the output shaft itself generates radial vibration, its side surface will hit the inner side of the fixing buckle 4, and the fixing buckle 4 will drive the mounting bracket 3 to move as the vibration frequency of the output shaft increases and the rotation of the output shaft increases. By observing the relative position of the fixing slot 302 and the bolt after shutdown, the vibration condition of the output shaft during this operation can be known.

[0036] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A hydraulic motor output shaft with a vibration detection mechanism, comprising a main body (1), a shaft body (2) mounted in the middle of the main body (1), characterized in that: A sliding groove is provided in the middle of the shaft body (2), and a fixing buckle (4) is provided at the sliding groove in the shaft body (2). A detection component 1 (5) and a detection component 2 (6) are provided on the upper and lower sides of the fixing buckle (4), respectively. The detection component 1 (5) mainly includes a mass block (503), a separator (507), a marking rod 1 (508) and a multi-stage spring. The strength of the multi-stage spring is distributed in a gradient. The detection component 2 (6) mainly includes a pendulum (602), a pointer (603), a dial (604) and a friction pad (6041). The pointer (603) is in close contact with the friction pad (6041). The detection component 2 (6) also includes a marking rod 2 (607). The detection component (5) includes a mounting block (501), the mounting block (501) is fixedly arranged on the upper half of the fixing buckle (4), a cushion block (502) is fixedly arranged on the inner bottom end of the mounting block (501), a mass block (503) is arranged on one side of the cushion block (502), the mass block (503) is slidably connected to the mounting block (501), and shock absorbing springs (504) are arranged on both sides of the mass block (503), one of the shock absorbing springs (504) is located on the outside of the cushion block (502) and is fixedly connected to the mounting block (501), and the other of the shock absorbing springs (504) is fixedly connected to the mass block (503). 4) is fixedly provided with a separator (507), and there are two separators (507) in total. The separators (507) are both slidably connected to the mounting block (501). A circular hole is provided in the middle of the separator (507). A spring (505) and a spring (506) are provided on one side of the cushioning spring (504) close to the separator (507). The spring (505) and the spring (506) are respectively installed on one side of the separator (507). A marking rod (508) is provided at the circular hole of the separator (507). A cover (509) is provided at the end of the marking rod (508). The cover (509) is connected to the mounting block (501) ) is connected by threads, a clamping block is provided between the cover (509) and the marking rod (508), the marking rod (508) can move outward after being struck by an external force, the marking rod (508) is located on one side of the mounting block (501) and is fixedly connected to the mass block (503), the detection component (6) includes a mounting block (601), the mounting block (601) is set in a U shape, and pendulums (602) are rotatably provided on both sides of the mounting block (601), a pointer (603) is fixedly provided on the side of the pendulum (602) close to the mounting block (601), and a dial (604) is fixedly provided on both sides of the mounting block (601).

2. The hydraulic motor output shaft with a vibration detection mechanism according to claim 1, characterized in that: A mounting frame (3) is provided around the shaft body (2), and the mounting frame (3) includes a fixing ring (301). The fixing ring (301) is fixedly connected to the main body (1) by bolts and nuts. Two fixing grooves (302) are provided on the surface of the fixing ring (301), and the bolts pass through the fixing grooves (302). A mounting shaft (303) is fixedly provided on the outer surface of the fixing ring (301).

3. The hydraulic motor output shaft with a vibration detection mechanism according to claim 1, characterized in that: The fixing buckle (4) is slidably connected to the mounting shaft (303), the fixing buckles (4) are fixed by bolts, the fixing buckle (4) is slidably connected to the shaft body (2), and the fixing buckle (4) does not rotate along with the shaft body (2).

4. The hydraulic motor output shaft with a vibration detection mechanism according to claim 1, characterized in that: The scale plate (604) is configured to be semicircular and fixedly connected to the second mounting block (601) via bolts. A friction pad (6041) is fixedly provided on the surface of the scale plate (604) on one side of the scale. A friction block having a harderness than that of the friction pad (6041) is provided between the pointer (603) and the friction pad (6041).

5. The hydraulic motor output shaft with a vibration detection mechanism according to claim 1, characterized in that: A fixing plate (605) is fixedly provided between the pendulums (602), the fixing plate (605) being fixed on one of the pendulums (602), and the other end being slidably connected to the other pendulum (602), a spring three (606) being fixedly provided on both sides of the fixing plate (605), both ends of the spring three (606) being fixedly connected to the mounting block two (601) via bolts, and a marking rod two (607) being slidably provided inside the lower end of the pendulum (602).

6. The hydraulic motor output shaft with a vibration detection mechanism according to claim 5, characterized in that: The second marking rod (607) is provided with multiple blocks. A fixing plug (608) is provided on the side of the second marking rod (607) away from the main body (1). A plurality of anti-skid washers (609) are fixedly provided inside the fixing plug (608). The fixing plug (608) is fixedly connected to the pendulum (602) by bolts. The anti-skid washers (609) clamp the second marking rod (607) so that the second marking rod (607) will not be displaced before being subjected to external force.

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