External contact type state detection device for planetary reduction mechanism brake

Abstract

The utility model discloses a kind of external contact type state detection devices for planetary reducer brake, including position sensor, induction rod, support end cover, sliding rod, sliding sleeve, baffle, spring and sensor support;Support end cover is fixed on brake end cover;Baffle is installed in the inner hole of support end cover;The smaller section of diameter of sliding rod is slidably installed in the inner hole of support end cover by sliding sleeve, and the larger section of diameter of sliding rod is gap fit and installed in the hole of brake end cover;Spring is compressed and installed between the stepped end face of sliding rod and baffle, so that the end face of sliding rod away from induction rod always contacts piston;Induction rod is fixed at one end of sliding rod close to position sensor, and induction rod extends to the outside of casing and is oppositely arranged with position sensor;Position sensor is fixed on the outside of casing by sensor support.The device ingeniously converts the monitoring function of non-contact position sensor into external contact type distance sensing.

Description

Technical Field

[0001] This utility model relates to the technical field of condition detection devices, and in particular to an external contact-type condition detection device for a planetary reducer brake. Background Technology

[0002] See Figure 1 Normally closed wet brakes, a common braking configuration in planetary gearboxes, work by using spring a to push piston b, which presses multiple sets of outer steel plates c against inner friction plates d. Friction is generated between the outer steel plates c and inner friction plates d. The outer steel plates c are connected to the housing g via splines, and the inner friction plates d are connected to the rotating shaft e via splines. This friction force thus brakes the rotating shaft e. Conversely, pressurized oil pushes piston b in the opposite direction, compressing spring a and separating the steel plates from the inner friction plates d, thereby releasing the brake.

[0003] Currently, the monitoring of the brake's open or closed state in a speed reducer is achieved by placing a position sensor f at a certain distance from the piston b's end face. The position sensor f detects the movement of the piston b, thus providing feedback on whether the brake is in a braking or open state. However, this structure has a problem: the non-contact position sensor f frequently generates false alarm signals due to interference from oil, metal particles, or other impurities in the non-contact sensing area h between the piston b's end face and the sensor's end face, leading to incorrect monitoring of the braking state. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the existing technology, an external contact-type status detection device for planetary reducer brakes is provided, which cleverly transforms the monitoring function of non-contact position sensors into external contact-type distance sensing through innovative structural design.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an external contact-type state detection device for a planetary reducer brake, applied to a planetary reducer brake including a housing, a brake end cover, and a piston. The external contact-type state detection device includes a position sensor, a sensing rod, a support end cover, a sliding rod, a sliding sleeve, a baffle, a spring, and a sensor bracket; the support end cover is fixed to the brake end cover, and the inner hole of the section of the support end cover near the sensing rod has an inner square structure; the baffle is installed in the inner hole of the support end cover; the sliding rod includes a section with a smaller diameter and a section with a larger diameter, wherein: The smaller diameter section of the sliding rod is slidably mounted in the inner hole of the support end cover via a sliding sleeve, while the larger diameter section of the sliding rod is fitted with a clearance fit in the hole of the brake end cover. The section of the sliding rod near the sensing rod has an outer square structure that engages with the inner square structure of the support end cover to prevent rotation. The spring is compressed and mounted between the stepped end face of the sliding rod and the baffle, ensuring that the end face of the sliding rod away from the sensing rod always contacts the piston. The sensing rod is fixed to the end of the sliding rod near the position sensor, and extends to the outside of the housing opposite to the position sensor. The position sensor is fixed to the outside of the housing via a sensor bracket.

[0006] To be further specific, in the above technical solution, the end of the sliding rod fixing sensing rod is provided with an external thread, and the sensing rod is locked and fixed by a locking nut.

[0007] To be further specific, in the above technical solution, the spring is a compression spring, the inner ring of the spring is sleeved on the sliding rod, and the two ends respectively abut against the stepped end face of the sliding rod and the baffle.

[0008] To be further specific, in the above technical solution, when the planetary reducer brake is closed, the piston moves away from the sliding rod and releases the compression on the spring; when the planetary reducer brake is open, the piston pushes the sliding rod to move closer to the sensing rod.

[0009] The beneficial effects of this invention are: by directly contacting the piston inside the brake with the sliding rod, the movement of the piston is effectively converted into the action of the sliding rod, and then the action is transmitted to the external position sensor by the sensing rod, thereby monitoring the action of the piston inside the brake. This effectively solves the problem of false alarm signals that often occur in non-contact sensing and greatly improves the reliability of the planetary reducer brake status monitoring. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the existing planetary deceleration mechanism brake condition monitoring structure.

[0012] Figure 1 The labels in the diagram are: a) spring; b) piston; c) outer steel plate; d) inner friction plate; e) rotating shaft; f) position sensor; g) housing; h) non-contact sensing area.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0015] Figure 2-3 The components are labeled as follows: 1. Position sensor; 2. Sensing rod; 3. Locking nut; 4. Screw; 5. Support end cover; 6. Sliding rod; 7. Piston; 8. Sliding sleeve; 9. Baffle; 10. Spring; 11. Sensor bracket; 12. Brake end cover; 13. Housing. Detailed Implementation

[0016] 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. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] To address the problem of false alarms caused by interference from oil, metal particles, and other impurities in the sensing area of ​​non-contact sensors, resulting in erroneous monitoring, this invention proposes an external contact-type status detection device for planetary reducer brakes. Through innovative structural design, it cleverly transforms the monitoring function of a non-contact position sensor into an external contact-type distance sensor, thereby completely avoiding the problem of false alarms caused by interference from oil, metal particles, and other impurities in the sensing area of ​​non-contact sensors.

[0018] This utility model discloses an external contact-type condition detection device for a planetary reducer brake. It is applied to a planetary reducer brake including a housing 13, a brake end cover 12, and a piston 7. The external contact-type condition detection device includes a position sensor 1, a sensing rod 2, a locking nut 3, a screw 4, a support end cover 5, a sliding rod 6, a sliding sleeve 8, a baffle 9, a spring 10, and a sensor bracket 11.

[0019] The support end cap 5 is fixedly installed on the brake end cap 12 by screws 4. The section of the support end cap 5 near the sensing rod 2 has an inner square structure.

[0020] The baffle 9 is installed in the inner hole of the support end cover 5.

[0021] The sliding rod 6 includes a smaller diameter section and a larger diameter section. The smaller diameter section of the sliding rod 6 is slidably installed in the inner hole of the support end cover 5 through the sliding sleeve 8, and the larger diameter section of the sliding rod 6 is fitted with a clearance fit in the hole of the brake end cover 12. The section of the sliding rod 6 near the sensing rod 2 is provided with an outer square structure, which cooperates with the inner square structure of the support end cover 5 to prevent rotation.

[0022] Spring 10 is compressed and installed between the stepped end face of sliding rod 6 and baffle 9, so that the end face of sliding rod 6 away from sensing rod 2 always contacts piston 7.

[0023] The sensing rod 2 is fixed to one end of the sliding rod 6 near the position sensor 1. The sensing rod 2 extends to the outside of the housing 13 and is positioned opposite to the position sensor 1. The position sensor 1 is fixedly installed on the outside of the housing 13 by the sensor bracket 11.

[0024] Specifically, the end of the sliding rod 6 that fixes the sensing rod 2 is provided with an external thread, and the sensing rod 2 is locked and fixed by the locking nut 3.

[0025] Specifically, the spring 10 is a compression spring, and the inner ring of the spring 10 is sleeved on the sliding rod 6, with its two ends abutting against the stepped end face of the sliding rod 6 and the baffle 9, respectively.

[0026] When the planetary reducer brake is closed, piston 7 pushes sliding rod 6 toward the direction of sensing rod 2; when the planetary reducer brake is open, piston 7 moves away from sliding rod 6 and releases the compression on spring 10.

[0027] Specifically, see Figure 2 and Figure 3The external contact-type status detection device for the planetary reducer brake of this utility model consists of a position sensor 1, a sensing rod 2, a locking nut 3, a screw 4, a support end cover 5, a sliding rod 6, a sliding sleeve 8, a baffle 9, a spring 10, and a sensor bracket 11. Position sensor 1 is fixedly mounted on the outer housing 13 via sensor bracket 11; support end cover 5 is fixedly mounted on brake end cover 12 via screw 4, and the inner hole of the left section of support end cover 5 is designed with an inner square hole structure, and baffle 9 is installed in the inner hole of support end cover 5; the outer circle of the smaller end of sliding rod 6 is slidably mounted in the inner hole of sliding sleeve 8 via sliding sleeve 8, and the larger section of sliding rod 6 is supported and mounted in the hole of brake end cover 12 with a gap, and the left section of sliding rod 6 is also designed with an outer square that fits with the inner square of support end cover 5; spring 10 is compressed and supported by the inner ring and mounted in the space formed by the stepped end face of sliding rod 6 and baffle 9; the rightmost end face of sliding rod 6 is always pushed to contact brake piston 7 under the extension and deformation action of spring 10; when the brake is closed and piston 7 moves to the right, the extension and deformation action of spring 10 drives sliding rod 6 to move to the right; conversely, when the brake is opened and piston 7 moves to the left, spring 10 is compressed and sliding rod 6 moves to the left. The above actions effectively convert the movement of the brake piston 7 into the movement of the sliding rod 6 through direct contact. The leftmost section of the sliding rod 6 is designed with external threads. The sensing rod 2 is locked and fixed on the sliding rod 6 by the locking nut 3 and moves synchronously with the sliding rod 6. The sensing rod 2 extends outward through the housing hole to the outside near the position sensor 1. In this way, the above structure effectively and reliably converts the movement of the piston inside the planetary reducer brake into the synchronous movement of the external sensing rod 2, and then the position sensor 1 senses the movement of the sensing rod 2 to complete the function of monitoring the brake's closed or open state. Another important point is that the outer square design of the left section of the sliding rod 6 matches the inner square hole of the left section of the support end cover 5. This design prevents the risk of the sliding rod 6 rotating during operation and affecting the sensing distance of the position sensor 1, making the device work more reliably. The structure of this utility model designs the position sensor 1 to be installed outside the housing 13. Compared with the original structure that installs the sensor inside the housing 13, this design makes it easier to adjust the position of the sensor or maintain and replace the sensor.

[0028] This invention discloses an external contact-type condition detection structure for a planetary reducer brake. The structure comprises a sliding rod 6, a spring 10, a support end cap 5, a sensing rod 2, a sliding sleeve 8, a locking nut 3, and a position sensor 1. Through direct contact between the internal piston 7 and the sliding rod 6, the movement of the piston 7 is effectively converted into the action of the sliding rod 6. The sensing rod 2 then transmits this action to the external position sensor 1, thereby monitoring the movement of the internal piston 7. Verification shows that the proposed novel external contact-type condition detection structure effectively solves the problem of false alarms frequently occurring with non-contact sensing, significantly improving the reliability of condition monitoring for planetary reducer brakes.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An external contact type state detection device for a planetary reduction mechanism brake, applied to a planetary reduction mechanism brake including a housing (13), a brake end cover (12), and a piston (7), characterized by: The external contact-type status detection device includes a position sensor (1), a sensing rod (2), a support end cap (5), a sliding rod (6), a sliding sleeve (8), a baffle (9), a spring (10), and a sensor bracket (11); The support end cap (5) is fixed on the brake end cap (12), and the section of the support end cap (5) near the sensing rod (2) has an inner square structure. The baffle (9) is installed in the inner hole of the support end cover (5); The sliding rod (6) includes a smaller diameter section and a larger diameter section, wherein: The smaller diameter section of the sliding rod (6) is slidably installed in the inner hole of the support end cover (5) through the sliding sleeve (8), and the larger diameter section of the sliding rod (6) is fitted with clearance in the hole of the brake end cover (12); The section of the sliding rod (6) near the sensing rod (2) is provided with an outer square structure, which cooperates with the inner square structure of the support end cover (5) to prevent rotation; The spring (10) is compressed and installed between the stepped end face of the sliding rod (6) and the baffle (9), so that the end face of the sliding rod (6) away from the sensing rod (2) is always in contact with the piston (7); The sensing rod (2) is fixed to one end of the sliding rod (6) near the position sensor (1), and the sensing rod (2) extends to the outside of the housing (13) and is positioned opposite to the position sensor (1); The position sensor (1) is fixed to the outside of the housing (13) by a sensor bracket (11).

2. The external contact-type state detection device according to claim 1, characterized by: The sliding rod (6) has an external thread at the end of the fixed sensing rod (2), and the sensing rod (2) is locked and fixed by a locking nut (3).

3. The external contactless state detection device according to claim 1, characterized in that: The spring (10) is a compression spring. The inner ring of the spring (10) is sleeved on the sliding rod (6), and its two ends abut against the stepped end face of the sliding rod (6) and the baffle (9) respectively.

4. The external contact-type status detection device according to claim 1, characterized in that: When the planetary reducer brake is closed, the piston (7) moves away from the sliding rod (6) and releases the compression on the spring (10); When the planetary reduction gear brake is engaged, the piston (7) pushes the sliding rod (6) to move closer to the sensing rod (2).

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