A controlled ratcheting free swing pawl device

Abstract

A controlled ratchet free swing pawl device, the invention relates to a pawl device, the purpose of the invention is to overcome the shortcomings of the existing hydraulic top pin type controllable ratchet pawl device, the working performance is greatly affected by the speed, the pawl cannot freely swing in the process of converting the free wheel state and the ratchet state, and the working head of the pawl is easy to produce large wear, it comprises an actuator, a torsion spring, a pawl, a pawl fixing ring, a pawl supporting ring, an adapter ring, a ratchet and a transmission cylinder; the pawl is arranged between the pawl fixing ring and the pawl supporting ring, the pawl fixing ring and the pawl supporting ring are fixedly connected through bolts, the pawl supporting ring and the adapter ring are fixedly connected through bolts, the ratchet is fixedly connected with one end of the transmission cylinder, the working section of the pawl is arranged close to the ratchet teeth of the ratchet, the actuator is installed on the pawl fixing ring, and the actuator is connected with the pawl through the torsion spring. The invention belongs to the field of mechanical transmission.

Description

Technical Field

[0001] This invention relates to a ratchet device, specifically a controlled-engagement free-swinging ratchet device, within the field of mechanical transmission. Background Technology

[0002] In conventional swing-type ratchet mechanisms, a spring connects the pawl and the pawl ring. The spring's force keeps the working head of the pawl pressed against the ratchet. When the ratchet mechanism is in the open position, the working head of the pawl intermittently contacts the non-working surface of the ratchet. When the ratchet mechanism is engaged, the working head of the pawl maintains constant contact with the working surface of the ratchet. During the transition between the open and engaged states, the pawl automatically moves from the non-working surface of the ratchet to the working surface under the force or torque of the spring. In some situations, controlled engagement of the pawl is required rather than automatic engagement, and the pawl must be able to swing freely during controlled engagement without being damaged by excessive force. For example, a rotary door access control system using a pawl-ratchet mechanism requires both conventional one-way passage and two-way passage in emergencies, meaning its internal pawl mechanism needs controlled engagement. Similarly, some overrunning clutches using a pawl-ratchet mechanism require both single-direction and double-direction overrunning, necessitating controlled engagement of their internal pawl mechanism.

[0003] Commonly known controlled-engagement ratchet mechanisms use radially arranged hydraulic jacks that directly act on the pawl head to extend the pawl. Because the hydraulic pressure acts directly on the pawl through the jacks, the pawl cannot freely swing during the transition between the sprocket and engaged states, leading to significant wear on the pawl's working head. When the pawl is located outside the ratchet, the hydraulic oil in the radially arranged downward-pressing hydraulic jacks is affected by the centrifugal force generated by the rotational speed, resulting in a decrease in actual working pressure and deterioration in performance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing hydraulic pin-type controllable ratchet pawl devices, such as the performance being greatly affected by the rotation speed, the pawl not being able to swing freely during the transition between the spool state and the engaged state, and the pawl working head being prone to significant wear. Therefore, this invention provides a controllable engagement free swing ratchet pawl device.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows:

[0006] A controlled-engagement free-swinging pawl device includes an actuator, a torsion spring, a pawl, a pawl retaining ring, a pawl support ring, a transition ring, a ratchet, and a transmission cylinder. The pawl is positioned between the pawl retaining ring and the pawl support ring, which are fixedly connected by bolts. The pawl support ring and the transition ring are also fixedly connected by bolts. One end of the ratchet is fixedly connected to the transmission cylinder. The working section of the pawl is positioned near the ratchet teeth of the ratchet. The actuator is mounted on the pawl retaining ring and is connected to the pawl via the torsion spring.

[0007] Furthermore, the pawl includes a pawl body and a pawl pivot shaft segment; the pawl body and the pawl pivot shaft segment are integrally connected, and the two ends of the pawl pivot shaft segment are respectively set on the pawl fixing ring and the pawl support ring. A pawl pivot hole is machined at the center of the axis of the pawl pivot shaft segment. The pawl pivot hole is a blind hole. A flat groove-shaped pawl pivot torsion spring fixing groove is machined at the bottom of the pawl pivot hole. The length of the pawl pivot torsion spring fixing groove is smaller than the diameter of the pawl pivot hole. One end of the torsion spring is installed in the pawl pivot torsion spring fixing groove.

[0008] Furthermore, the actuator includes a cylinder block, a vane shaft, a cylinder head, and multiple actuator fixing screws; the cylinder block flange inner stop and inner stop end face are fixedly connected to the cylinder head by multiple actuator fixing screws and a pawl fixing ring; the vane shaft is installed between the cylinder block and the cylinder head; the cylinder block includes a cylinder block flange and a cylinder block oil chamber, which are integrally connected; the cylinder block flange is annular, the cylinder block oil chamber is cylindrical, and the cylinder block flange is fixedly connected to the cylinder head.

[0009] Furthermore, the cylinder block oil cavity is radially machined with sector-shaped oil cavity I and sector-shaped oil cavity II with an included angle of θ; sector-shaped oil cavity I and sector-shaped oil cavity II are arranged axially symmetrically.

[0010] Furthermore, the blade shaft includes a blade shaft section and two blades; the two blades are symmetrically installed on both sides of the blade shaft section, and the axis of the blade shaft section is machined with a blade shaft hole, which is a blind hole. The bottom of the blade shaft hole is machined with a flat groove-shaped blade shaft torsion spring fixing groove, and the other end of the torsion spring is installed in the blade shaft torsion spring fixing groove. One blade is set in the fan-shaped oil cavity I, and the other blade is set in the fan-shaped oil cavity II.

[0011] Furthermore, the cylinder block flange is machined with a concave blind hole-shaped inner stop. The bottom surface of the inner stop is the inner stop end face. On the inner stop end face, inner and outer ring oil grooves are machined, concentric with the cylinder block bore axis. The two outer ring oil groove transverse holes are perpendicularly connected to the bottom surface of the outer ring oil grooves. The two inner ring oil groove transverse holes are perpendicularly connected to the bottom surface of the inner ring oil grooves. The two outer ring oil groove transverse holes are symmetrically arranged, and the line connecting the two outer ring oil groove transverse holes is perpendicular to the line connecting the two inner ring oil groove transverse holes. The cylinder head is machined with two outer ring oil groove outlet holes, which intersect perpendicularly with the outer ring oil groove transverse holes. The cylinder head is also machined with two inner ring oil groove outlet holes. The oil outlet of the inner ring oil groove intersects perpendicularly with the transverse hole of the inner ring oil groove. One oil outlet of the outer ring oil groove and one oil outlet of the inner ring oil groove are connected to the fan-shaped oil cavity I. The oil outlet of the ring oil groove and the oil outlet of the inner ring oil groove are arranged opposite each other on the side wall of the fan-shaped oil cavity I. Another oil outlet of the outer ring oil groove and another oil outlet of the inner ring oil groove are connected to the fan-shaped oil cavity II. The oil outlet of the ring oil groove and the oil outlet of the inner ring oil groove are arranged opposite each other on the side wall of the fan-shaped oil cavity II. The outer ring oil groove is connected to the fan-shaped oil cavity I and the fan-shaped oil cavity II through two sets of symmetrically arranged transverse holes and oil outlets of the outer ring oil groove. The inner ring oil groove is connected to the fan-shaped oil cavity I and the oil cavity II through two sets of symmetrically arranged transverse holes and oil outlets of the inner ring oil groove.

[0012] Furthermore, the pawl support ring is machined with a control valve connection port A and a control valve connection port B; the pawl fixing ring is machined with a connection hole for port A and a connection hole for port B; one end of the control valve connection port A is connected to the oil control valve, and the other end of the control valve connection port A is connected to the outer ring oil groove through the connection hole for port A; one end of the control valve connection port B is connected to the oil control valve, and the other end of the control valve connection port B is connected to the inner ring oil groove.

[0013] Furthermore, the cylinder head oil cavity hole is machined on the end face of the cylinder head oil cavity hole. The cylinder head oil cavity hole is a cylindrical blind hole, and the cylinder head oil cavity hole is concentric with the outer circle of the cylinder head. The depth dimension of the cylinder head oil cavity hole is equal to the height dimension of the cylinder block oil cavity. When the cylinder block and cylinder head are assembled, the flange end face is completely in contact with the cylinder head oil cavity hole end face, and the oil cavity end face is completely in contact with the bottom surface of the cylinder head oil cavity hole, forming a planar sealing surface.

[0014] Furthermore, the torsion spring includes a working section and two connecting sections, which are located at both ends of the working section and are connected by a transition fillet. The working section has a length of L, a width of H, and a thickness of T. The torsion spring is made of an elastic material.

[0015] Furthermore, the pawl retaining ring is machined with a pawl head stop pin and a pawl tail stop pin; the pawl rotates between the pawl head stop pin and the pawl tail stop pin, and the angle of swing of the pawl between the pawl head stop pin and the pawl tail stop pin is α.

[0016] The beneficial effects of this invention are:

[0017] 1. The extension and retraction of the pawl in this application are both controlled, and the pawl operation is reliable and has minimal wear.

[0018] 2. The horizontally mounted swing hydraulic actuator on the pawl fixing ring of this application drives the pawl to rotate through a torsion spring. One end of the torsion spring is connected to the rotating shaft of the swing hydraulic actuator, and the other end is connected to the pawl pin. The torsion spring is installed inside the hollow pawl pin. The swing hydraulic actuator applies torque to the pawl through the torsion spring, and the pawl can swing freely when it extends.

[0019] 3. In this application, the extension and retraction of the pawl are both controlled, and the pawl action is reliable; the pawl can swing freely when extended, with minimal wear; the torsion spring is installed inside the hollow pawl pin, resulting in a compact structure.

[0020] 4. Existing controlled-engagement pawl devices use radially arranged hydraulic jacks that directly act on the pawl head to extend the pawl. Because the hydraulic pressure acts directly on the pawl through the jacks, the pawl cannot swing freely during the transition between the sprocket and engaged states, leading to significant wear on the pawl's working head. This invention solves this problem by adding a torsion spring to apply downward pressure. Attached Figure Description

[0021] Figure 1 This is a longitudinal main sectional view of the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram showing the ring-shaped component formed after AA sectioning.

[0023] Figure 3 This is a main sectional view of the actuator component of this invention patent.

[0024] Figure 4 yes Figure 3 CC section view.

[0025] Figure 5 yes Figure 3 DD sectional view.

[0026] Figure 6 This is a front sectional view of the actuator cylinder block.

[0027] Figure 7 Figure 6 EE-directed sectional view.

[0028] Figure 8 This is a front sectional view of the cylinder head of the actuator.

[0029] Figure 9 yes Figure 8 FF section view.

[0030] Figure 10 This is a structural diagram of the torsion spring, a component of this invention patent.

[0031] Figure 11 These are the working principle diagram and hydraulic circuit diagram of this invention patent.

[0032] Figure 12 This is a schematic diagram of the half-stroke drive plate spring in the zero torque state when the pawl and actuator work together in this invention patent.

[0033] Figure 13 This is a schematic diagram of the extended state of the pawl and actuator working together in this invention patent.

[0034] Figure 14 This is a schematic diagram of the retracted state of the pawl and actuator working together in this invention patent.

[0035] Figure 15 This is a cross-sectional view of the pawl, a component of this invention patent.

[0036] Figure 16 yes Figure 14 MM section view.

[0037] Figure 17 yes Figure 14 NN cross-sectional view.

[0038] Figure 18 This is a main sectional view of the blade shaft of the actuator.

[0039] Figure 19 yes Figure 18 OO sectional view. Detailed Implementation

[0040] Specific implementation method one: Combining Figures 1-19 This embodiment describes a controlled-engagement, free-swinging pawl device, characterized in that it includes an actuator 100, a torsion spring 500, a pawl 600, a pawl fixing ring 700, a pawl support ring 800, a transition ring 900, a ratchet 400, and a transmission cylinder 450. The pawl 600 is disposed between the pawl fixing ring 700 and the pawl support ring 800, which are fixedly connected by bolts. The pawl support ring 800 and the transition ring 900 are also fixedly connected by bolts. The ratchet 400 is fixedly connected to one end of the transmission cylinder 450. The working section of the pawl 600 is located near the ratchet teeth 410 of the ratchet 400. The actuator 100 is mounted on the pawl fixing ring 700 and is connected to the pawl 600 via the torsion spring 500.

[0041] The pawl 600 is clamped and positioned by the pawl fixing ring 700 and the upper pawl pivot hole of the pawl support ring 800. The pawl 600 can swing around its own pawl pivot. The ratchet 400 is concentric with the transmission cylinder 450, the pawl fixing ring 700, the pawl support ring 800, and the adapter ring 900. The ratchet 400 is fixed on the transmission cylinder 450. Depending on the application, the transmission cylinder 450 can rotate or remain stationary. The pawl fixing ring 700 is fixed on the adapter ring 900 through the pawl support ring 800. Depending on the application, the adapter ring 900 can remain stationary or rotate. The outer ring of the ratchet 400 has multiple ratchet teeth 410 evenly distributed. In the engaged state, the pawl working surface 602 is pressed against the ratchet working surface 402. In the slack state, the pawl non-working surface 604 is pressed against the ratchet non-working surface 404.

[0042] Specific Implementation Method Two: Combining Figures 1-4 This embodiment describes a controlled-engagement, free-swinging pawl device. The pawl 600 includes a pawl body 610 and a pawl shaft segment 620. The pawl body 610 and the pawl shaft segment 620 are integrally connected. The two ends of the pawl shaft segment 620 are respectively disposed on a pawl fixing ring 700 and a pawl support ring 800. A pawl shaft hole 640 is machined at the center of the axis of the pawl shaft segment 620. The pawl shaft hole 640 is a blind hole. A flat groove-shaped pawl shaft torsion spring fixing groove 622 is machined at the bottom of the pawl shaft hole 640. The length of the pawl shaft torsion spring fixing groove 622 is smaller than the diameter of the pawl shaft hole 640. One end of a torsion spring 500 is installed in the pawl shaft torsion spring fixing groove 622.

[0043] The outer diameter 650 of the pawl shaft is connected to the pawl shaft hole on the pawl fixing ring 700 and the pawl support ring 800 with a small gap via a pin. When the pawl 600 swings, the pawl head stop 612 and the pawl tail stop 614 contact the pawl head stop pin 710 and the pawl tail stop pin 720 on the pawl fixing ring 700, respectively. When the pawl 600 is in the extended state, the direction of the pawl shaft torsion spring fixing groove 622 coincides with the vertical positioning line of the pawl 600. Other structures and components are the same as in specific embodiment one.

[0044] Specific implementation method three: Combining Figures 1-7This embodiment describes a controlled-engagement, free-swinging ratchet device. The actuator 100 includes a cylinder body 300, a vane shaft 200, a cylinder head 360, and multiple actuator fixing screws 110. The cylinder body 300's inner flange stop 302 and inner flange end face 304 are fixedly connected to the cylinder head 360 and the ratchet fixing ring 700 via the multiple actuator fixing screws 110. The vane shaft 200 is installed between the cylinder body 300 and the cylinder head 360. The cylinder body 300 includes a cylinder flange 310 and a cylinder oil chamber 320, which are integrally connected. The cylinder flange 310 is annular, and the cylinder oil chamber 320 is cylindrical. The cylinder flange 310 is fixedly connected to the cylinder head 360.

[0045] The cylinder bore 350 is concentric with the outer diameter of the cylinder oil chamber 320 and the cylinder flange 310. The cylinder bore 350 is a through hole. The lower semicircular arc of the cylinder flange 310 is cut off at one end to form a cylinder flange bevel 305. The left and right symmetry lines of the cylinder 300 are perpendicular to the cylinder flange bevel 305 and pass through the center of the cylinder bore 350. Other structures and components are the same as in Specific Embodiment 1.

[0046] Specific implementation method four: Combination Figures 1-19 This embodiment describes a controlled-interlocking, free-swinging ratchet pawl device. The cylinder oil chamber 320 is radially machined with fan-shaped oil chambers I 322 and II 324 at an angle of 2θ. The fan-shaped oil chambers I 322 and II 324 are arranged axially symmetrically.

[0047] The cylinder block 300 and cylinder head 360 are fitted together to form two oil chambers that accommodate the blades 220 on the blade shaft 200. The angle bisectors of the fan-shaped oil chambers I 322 and II 324 form an angle β = 45° with the left and right symmetry lines of the cylinder block 300, and the outer diameters of the fan-shaped oil chambers I 322 and II 324 coincide with the outer diameter of the cylinder block oil chamber 320. Other structures and components are the same as in specific embodiment one.

[0048] Specific Implementation Method Five: Combining Figures 1-19This embodiment describes a controlled-engagement, free-swinging ratchet device. The blade shaft 200 includes a blade shaft section 210 and two blades 220. The two blades 220 are symmetrically mounted on both sides of the blade shaft section 210. A blade shaft hole 240 is machined along the axis of the blade shaft section 210. The blade shaft hole 240 is a blind hole. A flat groove-shaped blade shaft torsion spring fixing groove 222 is machined at the bottom of the blade shaft hole 240. The other end of the torsion spring 500 is installed in the blade shaft torsion spring fixing groove 222. One blade 220 is disposed in a fan-shaped oil cavity I 322, and the other blade 220 is disposed in a fan-shaped oil cavity II 324. The axis of the blade shaft hole 240 coincides with the axis of the cylinder flange 310. Other structures and components are the same as in specific embodiment four.

[0049] Specific Implementation Method Six: Combination Figures 1-19 This embodiment describes a controlled-engagement, free-swinging ratchet pawl device. The cylinder flange 310 has a recessed blind hole-shaped inner stop 302. The bottom surface of the inner stop 302 is an inner stop end face 304. The inner stop end face 304 has an inner annular oil groove 306 and an outer annular oil groove 308, concentric with the axis of the cylinder bore 350. The two outer annular oil groove transverse holes 318 are perpendicularly connected to the bottom surface of the outer annular oil groove 308. The inner ring oil groove transverse hole 316 is perpendicularly connected to the bottom surface of the inner ring oil groove 306. Two outer ring oil groove transverse holes 318 are symmetrically arranged. The line connecting the two outer ring oil groove transverse holes 318 is perpendicular to the line connecting the two inner ring oil groove transverse holes 316. Two outer ring oil groove outlet holes 328 are machined on the cylinder head 360, and the outer ring oil groove outlet holes 328 intersect perpendicularly with the outer ring oil groove transverse holes 318. Two inner ring oil groove transverse holes 316 are machined on the cylinder head 360. An oil outlet hole 326 is provided in the annular oil groove. The inner annular oil groove outlet hole 326 intersects perpendicularly with the transverse hole 316 of the inner annular oil groove. An outer annular oil groove outlet hole 328 and an inner annular oil groove outlet hole 326 are connected to the fan-shaped oil cavity I 322. The annular oil groove outlet hole 328 and the inner annular oil groove outlet hole 326 are arranged opposite to each other on the side wall of the fan-shaped oil cavity I 322. Another outer annular oil groove outlet hole 328 and another inner annular oil groove outlet hole 326 are connected to the fan-shaped oil cavity II 324. The oil outlet holes 328 and 326 of the inner annular oil groove are arranged opposite each other on the side wall of the fan-shaped oil cavity II 324. The outer annular oil groove 308 is connected to the fan-shaped oil cavity I 322 and the fan-shaped oil cavity II 324 through two sets of symmetrically arranged outer annular oil groove transverse holes 318 and outer annular oil groove outlet holes 328. The inner annular oil groove 306 is connected to the fan-shaped oil cavity I 322 and the oil cavity II 324 through two sets of symmetrically arranged inner annular oil groove transverse holes 316 and inner annular oil groove outlet holes 326. Other structures and components are the same as in specific embodiments four or five.

[0050] Specific implementation method seven: Combination Figures 1-19This embodiment describes a controlled-interlocking, free-swinging pawl device. The pawl support ring 800 has a control valve connection port A 810 and a control valve connection port B 820 machined on it. The pawl fixing ring 700 has an A-port connection hole and a B-port connection hole machined on it. One end of the control valve connection port A 810 is connected to an oil control valve, and the other end of the control valve connection port A 810 is connected to an outer ring oil groove 308 through the A-port connection hole. One end of the control valve connection port B 820 is connected to an oil control valve, and the other end of the control valve connection port B 820 is connected to an inner ring oil groove 306.

[0051] The control valve, through the control medium, can drive the blade shaft 200 to swing forward and backward, thereby driving the pawl 600 to swing in tandem via the torsion spring 500. The pawl retaining ring 700, pawl support ring 800, and actuator 100 have two sets of control medium passages connected to two cavities on the actuator 100 cylinder body. The external interfaces of the control medium passages are control valve connection port A 810 and control valve connection port B 820 on the pawl support ring 800. The output port and return port of the control valve are connected to control valve connection port A 810 and control valve connection port B 820, respectively. The control valve, through the control medium, can drive the blade shaft 200 to swing forward and backward, thereby driving the pawl 600 to swing in tandem via the torsion spring 500.

[0052] When the blade shaft 200 swings forward, the pawl 600 extends. After extension, the non-working surface 604 of the pawl is in contact with the non-working surface 404 of the ratchet, and the pawl 600 can still swing freely. When the blade shaft 200 swings in the opposite direction, the pawl 600 retracts, the pawl function is lost, and the ratchet 400 can rotate freely. The pawl head stop pin 710 and the pawl tail stop pin 720 on the pawl retaining ring 700 limit the maximum angle of free swing of the pawl 600 to α. Oil ports A and B on actuator 100 are connected to ports A and B of dual-coil two-position four-way solenoid valve 1000 via pipelines. When the left coil S1 of dual-coil two-position four-way solenoid valve 1000 is energized, oil port A on actuator 100 is connected to oil source P, and oil port B on actuator 100 is connected to return oil port T. Actuator 100 drives pawl 600 through torsion spring 500 to swing along extension steering 120, and pawl 600 moves away from ratchet 400.

[0053] When the right coil S2 of the dual-coil two-position four-way solenoid valve 1000 is energized, the oil port B on the actuator 100 is connected to the oil source P, and the oil port A on the actuator 100 is connected to the return oil port T. The actuator 100 drives the pawl 600 through the torsion spring 500 to swing along the retraction steering 130, and the pawl 600 is in close contact with the ratchet 400. Other structures and components are the same as in specific implementation method six.

[0054] Specific implementation method eight: Combination Figures 1-19This embodiment describes a controlled-engagement, free-swinging ratchet device. The cylinder head 360 has an oil cavity hole 380 machined on its end face 382. The oil cavity hole 380 is a cylindrical blind hole, and it is concentric with the outer circle of the cylinder head 360. The depth of the oil cavity hole 380 is equal to the height of the cylinder body oil cavity 320. When the cylinder body 300 and cylinder head 360 are assembled, the flange end face 319 is completely flush with the end face 382 of the oil cavity hole, and the oil cavity end face 329 is completely flush with the bottom surface 384 of the oil cavity hole, forming a planar sealing surface.

[0055] The cylinder head 360 has material removed from its cylindrical outer surface along a direction parallel to the axis, forming a flat cylinder head bevel 365. The cylinder head bevel 365 has the same dimensions as the cylinder block flange bevel 305. When the cylinder block 300 and cylinder head 360 are assembled, the cylinder head bevel 365 is aligned with the cylinder block flange bevel 305. A cylinder head oil cavity hole 380 is formed on the end face 382 of the cylinder head oil cavity hole. The cylinder head oil cavity hole 380 is a cylindrical blind hole concentric with the outer circle of the cylinder head 360. A cylinder head shaft is formed on the bottom surface 384 of the cylinder head oil cavity hole. Hole 370, cylinder head shaft hole 370 is a cylindrical blind hole and is concentric with cylinder head oil cavity hole 380; cylinder head bolt countersunk hole 390 is located outside cylinder head oil cavity hole 380, and its distribution circle is concentric with cylinder head oil cavity hole 380; multiple flange bolt through holes 312 are machined radially on cylinder block flange 310, the number and distribution size of cylinder head bolt countersunk hole 390 and flange bolt through hole 312 are the same, and each cylinder head bolt countersunk hole 390 is correspondingly set with one flange bolt through hole 312.

[0056] The outer diameter 250 of the blade shaft is connected to the cylinder head shaft hole 370 and the cylinder block hole 350 with a small clearance via a pin. The outer diameter 230 of the blade forms a radial clearance seal with the cylinder head oil cavity hole 380. Other structures and components are the same as in specific embodiment six.

[0057] Specific Implementation Method Nine: Combining Figures 1-19 This embodiment describes a controlled-engagement free-swinging ratchet device. The torsion spring 500 includes a working section 520 and two connecting sections 510. The two connecting sections 510 are located at both ends of the working section 520 and are connected by a transition fillet 530. The working section 520 has a length of L, a width of H, and a thickness of T. The torsion spring 500 is made of an elastic material.

[0058] The torsional stiffness of the torsion spring 500 can be quickly adjusted by changing H and T, compensating for changes in torsional stiffness caused by variations in the hardness of the torsion spring 500 material itself. This facilitates precise adjustment of the torsional stiffness based on experimental measurement results. The connecting section 510 is used for insertion into the flat slot on the blade shaft 200 and the pawl 600. The width H1 of the connecting section is greater than H to prevent friction between the working section 520 and surrounding parts during torsion. The torsion spring 500 has a simple external structure. Other structures and components are the same as in Specific Embodiment 1.

[0059] Specific Implementation Method Ten: Combining Figures 1-19 This embodiment describes a controlled-interlocking, free-swinging pawl device. A pawl fixing ring 700 has a pawl head stop pin 710 and a pawl tail stop pin 720 machined on it. The pawl 600 rotates between the pawl head stop pin 710 and the pawl tail stop pin 720, and the pawl 600 swings between these two pins at an angle α.

[0060] The angle bisectors of the fan-shaped oil chambers I 322 and II 324 make an angle of β = 45° with the left and right symmetrical lines of the cylinder block 300. The outer diameters of the fan-shaped oil chambers I 322 and II 324 coincide with the outer diameter of the cylinder block oil chamber 320.

[0061] The acute angle γ between the direction of the blade shaft torsion spring fixing groove 222 and the symmetrical positioning line of the blade 220 is β-α / 2. Specifically, in this embodiment, when the pawl 600 is in the extended state, the angle between the direction of the blade shaft torsion spring fixing groove 222 and the vertical positioning line is θ-α / 2. Other structures and components are the same as in specific embodiment nine.

[0062] Working principle

[0063] After assembly, this application uses a dual-coil two-position four-way solenoid valve 1000 to control the oil supply method of valve connection A port 810 and control valve connection B port 820 to drive the blade shaft 200 and torsion spring 500 in the actuator 100 to swing. The torsion spring 500 controls the pawl 600 to swing. The swing of the pawl 600 achieves the engagement of the pawl 600 with the ratchet 400, thus achieving the purpose of this application.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A controlled-interlocking, free-swinging pawl device, characterized in that: It includes an actuator (100), a torsion spring (500), a pawl (600), a pawl retaining ring (700), a pawl support ring (800), an adapter ring (900), a ratchet (400), and a transmission cylinder (450); the pawl (600) includes a pawl body (610) and a pawl shaft section (620); the actuator (100) includes a cylinder block (300), a blade shaft (200), a cylinder head (360), and multiple actuator fixing screws (110); the blade shaft (200) includes a blade shaft section (210) and two blades (220); A pawl (600) is positioned between a pawl retaining ring (700) and a pawl support ring (800). The pawl retaining ring (700) and the pawl support ring (800) are fixedly connected by bolts. The pawl support ring (800) and the adapter ring (900) are also fixedly connected by bolts. A ratchet (400) is fixedly connected to one end of a transmission cylinder (450). The working section of the pawl (600) is positioned near the ratchet teeth (410) of the ratchet (400). An actuator (100) is mounted on the pawl retaining ring (700) and is connected to the pawl (600) via a torsion spring (500). The pawl body (610) and the pawl shaft segment (620) are integrally connected. The two ends of the pawl shaft segment (620) are respectively set on the pawl fixing ring (700) and the pawl support ring (800). A pawl shaft hole (640) is machined at the center of the axis of the pawl shaft segment (620). The pawl shaft hole (640) is a blind hole. A flat groove-shaped pawl shaft torsion spring fixing groove (622) is machined at the bottom of the pawl shaft hole (640). The length of the pawl shaft torsion spring fixing groove (622) is smaller than the diameter of the pawl shaft hole (640). One end of the torsion spring (500) is installed in the pawl shaft torsion spring fixing groove (622). The cylinder block (300) has an inner stop (302) and an inner stop end face (304) on its cylinder flange. The cylinder head (360) is fixedly connected to the cylinder head (360) via multiple actuator fixing screws (110) and a pawl fixing ring (700). A vane shaft (200) is installed between the cylinder block (300) and the cylinder head (360). The cylinder block (300) includes a cylinder flange (310) and a cylinder oil chamber (320), which are integrally connected. The cylinder flange (310) is annular, and the cylinder oil chamber (320) is cylindrical. The cylinder flange (310) is fixedly connected to the cylinder head (360). The cylinder block oil chamber (320) is radially machined with fan-shaped oil chamber I (322) and fan-shaped oil chamber II (324) with an included angle of 2θ; the fan-shaped oil chamber I (322) and fan-shaped oil chamber II (324) are arranged axially symmetrically. Two blades (220) are symmetrically installed on both sides of the blade shaft section (210). The blade shaft section (210) has a blade shaft hole (240) machined on its axis. The blade shaft hole (240) is a blind hole. The bottom of the blade shaft hole (240) has a flat groove-shaped blade shaft torsion spring fixing groove (222). The other end of the torsion spring (500) is installed in the blade shaft torsion spring fixing groove (222). One blade (220) is set in the fan-shaped oil cavity I (322), and the other blade (220) is set in the fan-shaped oil cavity II (324).

2. The controlled engagement free-swinging pawl device according to claim 1, characterized in that: The cylinder flange (310) is machined with an inner stop (302) in the shape of a concave blind hole. The bottom surface of the inner stop (302) is the inner stop end face (304). The inner stop end face (304) is machined with an inner ring oil groove (306) and an outer ring oil groove (308) that are concentric with the axis of the cylinder bore (350). The two outer ring oil groove transverse holes (318) are perpendicularly connected to the bottom surface of the outer ring oil groove (308); the two inner ring oil groove transverse holes (316) are perpendicularly connected to the bottom surface of the inner ring oil groove (306). Two outer ring oil groove transverse holes (318) are symmetrically arranged, and two inner ring oil groove transverse holes (316) are symmetrically arranged. The line connecting the two outer ring oil groove transverse holes (318) is perpendicular to the line connecting the two inner ring oil groove transverse holes (316). Two outer ring oil groove outlet holes (328) are machined on the cylinder head (360), and the outer ring oil groove outlet holes (328) intersect the outer ring oil groove transverse holes (318) perpendicularly. Two inner ring oil groove outlet holes (326) are machined on the cylinder head (360), and the inner ring oil groove outlet holes (328) are perpendicular to the outer ring oil groove transverse holes (318). 26) Perpendicular to the inner ring oil groove transverse hole (316), an outer ring oil groove outlet hole (328) and an inner ring oil groove outlet hole (326) are connected to the fan-shaped oil cavity I (322). The ring oil groove outlet hole (328) and the inner ring oil groove outlet hole (326) are respectively arranged on the side wall of the fan-shaped oil cavity I (322). Another outer ring oil groove outlet hole (328) and another inner ring oil groove outlet hole (326) are connected to the fan-shaped oil cavity II (324). The ring oil groove outlet hole (328) and the inner ring oil groove outlet hole (316) are perpendicular to the inner ring oil groove transverse hole (316). The oil outlet hole (326) of the annular oil groove is set opposite to the side wall of the fan-shaped oil cavity II (324). The outer annular oil groove (308) is connected to the fan-shaped oil cavity I (322) and the fan-shaped oil cavity II (324) through two sets of symmetrically arranged outer annular oil groove transverse holes (318) and outer annular oil groove outlet hole (328). The inner annular oil groove (306) is connected to the fan-shaped oil cavity I (322) and the fan-shaped oil cavity II (324) through two sets of symmetrically arranged inner annular oil groove transverse holes (316) and inner annular oil groove outlet hole (326).

3. The controlled engagement free-swinging pawl device according to claim 2, characterized in that: The pawl support ring (800) is machined with a control valve connection port A (810) and a control valve connection port B (820); the pawl fixing ring (700) is machined with a port A connection hole and a port B connection hole; one end of the control valve connection port A (810) is connected to the oil control valve, and the other end of the control valve connection port A (810) is connected to the outer ring oil groove (308) through the port A connection hole; one end of the control valve connection port B (820) is connected to the oil control valve, and the other end of the control valve connection port B (820) is connected to the inner ring oil groove (306).

4. The controlled engagement free-swinging pawl device according to claim 1, characterized in that: The cylinder head (360) has a cylinder head oil cavity hole (380) machined on the cylinder head oil cavity hole end face (382). The cylinder head oil cavity hole (380) is a cylindrical blind hole, and the cylinder head oil cavity hole (380) is concentric with the outer circle of the cylinder head (360). The depth dimension of the cylinder head oil cavity hole (380) is equal to the height dimension of the cylinder body oil cavity (320). When the cylinder body (300) and the cylinder head (360) are assembled, the flange end face (319) is completely attached to the cylinder head oil cavity hole end face (382), and the oil cavity end face (329) is attached to the bottom surface (384) of the cylinder head oil cavity hole, forming a planar sealing surface.

5. The controlled engagement free-swinging pawl device according to claim 1, characterized in that: The torsion spring (500) includes a working section (520) and two connecting sections (510). The two connecting sections (510) are located at both ends of the working section (520) and are connected by a transition fillet (530). The working section (520) has a length of L, a width of H, and a thickness of T. The torsion spring (500) is made of elastic material.

6. The controlled engagement free-swinging pawl device according to claim 1, characterized in that: The pawl retaining ring (700) is machined with a pawl head stop pin (710) and a pawl tail stop pin (720); the pawl (600) rotates between the pawl head stop pin (710) and the pawl tail stop pin (720), and the pawl (600) swings between the pawl head stop pin (710) and the pawl tail stop pin (720) at an angle of α.

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