Ratchet ring self-checking equipment

Abstract

The utility model discloses ratchet ring self-checking equipment, and relates to the technical field of ratchet ring detection, in particular to ratchet ring self-checking equipment, which comprises a ratchet frame, a ratchet ring connected to the outer side of the ratchet frame, a pawl connected to the outer side of the ratchet frame and positioned between the ratchet frame and the ratchet ring, and the pawl is in a circular arc shape. A movable groove which is communicated with the outside and can allow the pawls to move is formed in the ratchet wheel frame, a self-checking device for self-checking is fixedly connected in the ratchet wheel frame, and a driving plate for driving the subsequent pawls to extend is connected in the ratchet wheel frame through a rotating shaft. According to the ratchet ring self-checking equipment, the optical detector emits light beams, when the ratchet ring rotates, the pawl moves to continuously shield the light beams emitted by the optical detector, and when the ratchet ring is damaged and cannot shield the light beams, the optical detector transmits signals at the moment, and the damage of the ratchet ring is checked in time.

Description

Technical Field

[0001] The utility model relates to the technical field of ratchet ring detection, in particular to a self-checking device for ratchet rings. Background Technique

[0002] A ratchet ring is defined as a gear with a rigid tooth-shaped surface or a friction surface on its outer or inner edge, and is an important component of a ratchet mechanism. It is pushed by a pawl to make a step motion. The characteristic of this meshing motion is that the ratchet ring can only rotate in one direction and cannot reverse. During long-term use, the pawl plane cooperates with the ratchet ring surface, where stress concentration occurs and the force is relatively large, which may lead to wear between the pawl plane and the ratchet ring surface. When the wear reaches a certain degree, the pawl cannot lock the ratchet ring, resulting in slippage, which greatly limits the overall service life of the ratchet and pawl mechanism. When it is damaged, it will affect the normal operation of the crane and even cause engineering accidents. Therefore, we propose a self-checking device for ratchet rings. Content of the Utility Model

[0003] The utility model provides a self-checking device for ratchet rings, which solves the problems raised in the above background technique.

[0004] To achieve the above object, the utility model is realized through the following technical solutions: A self-checking device for ratchet rings includes a ratchet frame. A ratchet ring is connected to the outside of the ratchet frame, and a pawl is connected to the outside of the ratchet frame and is located between the ratchet frame and the ratchet ring. The pawl is arc-shaped, and an activity groove communicating with the outside for the movement of the pawl is provided on the ratchet frame. A self-checking device for self-checking is fixedly connected inside the ratchet frame, and a driving plate for driving the subsequent pawl to extend is connected to the ratchet frame through a rotating shaft. When the self-checking device detects a fault, it drives the driving plate to drive the subsequent pawl to extend.

[0005] Optionally, a motor is fixed inside the ratchet frame, and the output shaft of the motor is fixed to the center of one side of the driving plate. A controller is arranged inside the self-checking device, and the controller controls the motor.

[0006] Optionally, a transmission gear is connected to the inside of the ratchet frame through a shaft pin. There is a toothed section on the outside of the driving plate, and the transmission gear can be engaged with the toothed section on the driving plate.

[0007] Optionally, an arc-shaped starting and ending groove and an ending groove are formed on the transmission gear. The ending groove is cylindrical, and a limiting pin is movably connected inside the ratchet frame.

[0008] Optionally, a second spring is fixed to the top end of the limit pin, and the top end of the second spring is fixed to the ratchet frame. When the pawl extends, the limit pin is inserted into the stop groove, and when the pawl does not extend, the limit pin is inserted into the start-stop groove.

[0009] Optionally, a pawl and a support base are movably connected in the movable groove. One side of the pawl is fixedly connected to a first spring, one end of the first spring is fixed to the support base, and the transmission gear is fixed to the support base.

[0010] Optionally, an optical detector is fixed to the ratchet frame, and the optical detector is connected to the self-checking device. One end of the optical detector is in communication with the inside of the movable groove.

[0011] The utility model has the following beneficial effects:

[0012] 1. For this ratchet ring self-checking device, when the optical detector emits a light beam and the ratchet ring rotates, the pawl moves continuously to block the light beam emitted by the optical detector. When it is damaged and cannot block the light beam, the optical detector conducts a signal at this time, and the damage that occurs can be detected in time, so that it can achieve the effect of self-checking.

[0013] 2. For this ratchet ring self-checking device, when it is damaged, the self-checking device controls the motor to drive the drive plate, and then drives the transmission gear to rotate, so that another pawl can extend out of the movable groove to lock the ratchet ring, achieving the effect of multiple locking. Then it can run smoothly, avoid accidents, and at the same time extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a schematic structural diagram of the self-checking device connection of the utility model;

[0016] Figure 3 is a schematic structural diagram of the transmission gear connection of the utility model;

[0017] Figure 4 is a schematic structural diagram of the movable groove connection of the utility model;

[0018] Figure 5 is a schematic structural diagram of the support base connection of the utility model;

[0019] Figure 6 is a schematic structural diagram of part A of the utility model.

[0020] In the figure: 1, ratchet frame; 2, ratchet ring; 3, drive plate; 4, transmission gear; 5, motor; 6, self-checking device; 7, pawl; 8, movable groove; 9, support base; 10, first spring; 11, limit pin; 12, second spring; 13, optical detector. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 6 , a ratchet ring self-checking device, including a ratchet frame 1, a ratchet ring 2 is connected to the outside of the ratchet frame 1, and a pawl 7 is connected to the outside of the ratchet frame 1 and the pawl 7 is located between the ratchet frame 1 and the ratchet ring 2. The pawl 7 can lock the ratchet ring 2, so that the ratchet ring 2 can rotate unidirectionally. The pawl 7 is arc-shaped, and a movable groove 8 communicating with the outside for the pawl 7 to move is provided on the ratchet frame 1. The pawl 7 can move along the track of the movable groove 8, and the pawl 7 can move into the movable groove 8, so that the ratchet ring 2 can rotate unidirectionally smoothly. A self-checking device 6 for self-checking is fixedly connected inside the ratchet frame 1, and a drive plate 3 for driving the subsequent extension of the pawl 7 is connected to the ratchet frame 1 through a rotating shaft, so that the drive plate 3 can rotate at a fixed position inside the ratchet frame 1, and then drive the subsequent pawl 7 to extend out of the movable groove 8 to ensure that the ratchet ring 2 can be normally locked. When the self-checking device 6 detects a fault, it drives the drive plate 3 to drive the subsequent pawl 7 to extend, so that the ratchet ring 2 can be locked by multiple pawls 7 to ensure its normal operation.

[0023] Please refer to Figures 1 to 3 , a motor 5 is fixed inside the ratchet frame 1, the output shaft of the motor 5 is fixed to the center of one side of the drive plate 3, and driven by the output shaft of the motor 5, the drive plate 3 can rotate. The motor 5 is a prior art and will not be described in detail here. A controller is provided inside the self-checking device 6, and the controller controls the motor 5. Therefore, when it is damaged, the self-checking device 6 can smoothly control the motor 5 to drive the drive plate 3, so that the pawl 7 can extend out.

[0024] Please refer to Figures 1 to 5, inside the ratchet frame 1, a transmission gear 4 is connected by a shaft pin to form a hinge structure with the shaft pin as the rotation axis, so that the transmission gear 4 can rotate at a fixed position. There is a toothed section on the outer side of the driving plate 3, and its transmission gear 4 can engage with the toothed section on the driving plate 3, so that the driving plate 3 can independently drive the transmission gear 4 to rotate, and thus achieve various protection effects.

[0025] Please refer to Figures 1 to 5 , an arc-shaped starting slot and a terminating slot are provided on the transmission gear 4, so that the limit pin 11 can smoothly enter the starting slot. The terminating slot is cylindrical, so that the limit pin 11 can be stably inserted into the terminating slot to prevent the transmission gear 4 from moving. And a limit pin 11 is movably connected inside the ratchet frame 1. Under the limitation of the ratchet frame 1, the limit pin 11 can move along a fixed track.

[0026] Please refer to Figures 1 to 5 , a second spring 12 is fixed to the top of the limit pin 11, and the top of the second spring 12 is fixed to the ratchet frame 1. Under the action of the elastic force of the second spring 12, the limit pin 11 can be smoothly inserted into the terminating slot. When the pawl 7 extends, the limit pin 11 is inserted into the terminating slot. When the pawl 7 does not extend, the limit pin 11 is inserted into the starting slot, so that the transmission gear 4 can move smoothly. After moving to the terminating slot, its movement is limited to ensure that the pawl 7 can extend smoothly to lock the ratchet ring 2.

[0027] Please refer to Figures 1 to 5 , a pawl 7 and a support base 9 are movably connected in the movable slot 8, so that the pawl 7 and the support base 9 can move along a fixed track in the movable slot 8. One side of the pawl 7 is fixedly connected with a first spring 10, and one end of the first spring 10 is fixed to the support base 9. Under the action of the elastic force of the first spring 10, the pawl 7 can rebound smoothly to lock the ratchet ring 2. And the transmission gear 4 is fixed to the support base 9. Driven by the transmission gear 4, the support base 9 can move, and then push the pawl 7 to extend.

[0028] Please refer to Figures 1 to 6 , an optical detector 13 is fixed on the ratchet frame 1, and the optical detector 13 is connected to the self-checking device 6, so that the optical detector 13 can smoothly transmit the signal when it is damaged. One end of the optical detector 13 is connected to the inside of the movable slot 8. When the ratchet ring 2 rotates at a constant speed, one end of the pawl 7 continuously shields the probe of the optical detector 13. When the pawl 7 or the ratchet ring 2 is worn and reaches a certain limit, and the pawl 7 cannot shield the light beam emitted by the optical detector 13, at this time, the optical detector 13 transmits a damage signal to the self-checking device 6.

[0029] In summary, when the ratchet ring self-inspection device is in use, when the ratchet ring 2 rotates unidirectionally, the ratchet ring 2 pushes the pawl 7 to move into the movable slot 8, and the first spring 10 is compressed. When it rotates at a constant speed continuously, one end of the pawl 7 continuously shields the probe of the optical detector 13. When the pawl 7 or the ratchet ring 2 is worn and reaches a certain limit, and the pawl 7 cannot shield the light beam emitted by the optical detector 13, at this time, the optical detector 13 transmits a signal to the self-inspection device 6, and the controller in the self-inspection device 6 controls the operation of the motor 5. Driven by the output shaft of the motor 5, the driving plate 3 rotates, so that the toothed section of the driving plate 3 engages with the next transmission gear 4 and drives the transmission gear 4 to rotate, and then drives the support base 9 to move, so that one end of the pawl 7 extends out of the movable slot 8. And as the transmission gear 4 rotates, its limit pin 11 disengages from the starting and stopping slot and is inserted into the stopping slot under the action of the elastic force of the second spring 12, thereby limiting the position of the transmission gear 4 and ensuring that the support base 9 does not move. When the pawls 7 extending out of the movable slot 8 cannot shield the light beams emitted by the corresponding optical detectors 13, the extension of the next pawl 7 is carried out, and so on by pushing inwards.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ratchet ring self-testing device, comprising a ratchet frame (1), a ratchet ring (2) connected to the outside of the ratchet frame (1), and a ratchet pawl (7) connected to the outside of the ratchet frame (1) and the ratchet pawl (7) is located between the ratchet frame (1) and the ratchet ring (2), characterized in that: The ratchet pawl (7) is in an arc shape, and a movable groove (8) connected to the outside and capable of allowing the ratchet pawl (7) to move is provided on the ratchet frame (1). A self-checking device (6) for performing self-checking is fixedly connected inside the ratchet frame (1), and a driving plate (3) for driving the subsequent ratchet pawl (7) to extend is connected inside the ratchet frame (1) via a rotating shaft. When the self-checking device (6) detects a fault, the driving plate (3) drives the subsequent ratchet pawl (7) to extend.

2. A ratchet ring self-testing device according to claim 1, characterized in that: A motor (5) is fixed inside the ratchet frame (1), and an output shaft of the motor (5) is fixed to the center of a circle on one side of the drive plate (3). A controller is provided inside the self-test device (6), and the controller controls the motor (5).

3. A ratchet ring self-testing device according to claim 2, characterized in that: The ratchet frame (1) is internally connected to a transmission gear (4) via an axle pin, and a toothed section is provided on the outer side of the drive plate (3), and the transmission gear (4) can mesh with the toothed section on the drive plate (3).

4. A ratchet ring self-testing device according to claim 3, characterized in that: The transmission gear (4) is provided with arc-shaped start and end grooves and a termination groove, the termination groove is cylindrical and is movably connected to a limit pin (11) in the ratchet frame (1).

5. A ratchet ring self-testing device according to claim 4, characterized in that: A second spring (12) is fixed to the top end of the limit pin (11), and the top end of the second spring (12) is fixed to the ratchet frame (1). When the pawl (7) is extended, the limit pin (11) is plugged into the end groove; when the pawl (7) is not extended, the limit pin (11) is plugged into the start and end grooves.

6. A ratchet ring self-testing device according to claim 5, characterized in that: A pawl (7) and a support base (9) are movably connected in the movable groove (8); a first spring (10) is fixedly connected to one side of the pawl (7); one end of the first spring (10) is fixed to the support base (9); and the transmission gear (4) is fixed to the support base (9).

7. A ratchet ring self-testing device according to claim 1, characterized in that: An optical detector (13) is fixed on the ratchet frame (1), and the optical detector (13) is connected to the self-checking device (6), and one end of the optical detector (13) is connected to the inside of the movable groove (8).

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