阅读说明：本技术 一种具备自锁功能的操纵手柄 (Operating handle with self-locking function ) 是由 詹永鹏 周玉东 王洋 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种具备自锁功能的操纵手柄,包括手柄,拉杆一端连接在手柄上,另一端穿过套筒内孔后通过钢索与液压阀连接,销设置在拉杆中部,套筒中部侧壁开设有两腰形槽,两腰形槽连通至套筒内孔,套筒内孔设置有两个键槽,销能够沿键槽和腰形槽移动,套筒靠近手柄一端端面对称开设有两个与套筒内孔、键槽联通的扇形槽,套筒沿轴向开设有两圆孔,两圆孔分别联通至两扇形槽,两圆孔的孔底分别联通两腰形槽；圆孔内依次设置有钢球二、弹簧、芯轴、螺管、钢球一,钢球一设置于螺管内。该手柄初始状态和工作状态均具备自锁功能,可避免机械振动或人工误操作带来的误动,有效保证液压阀输出压力的准确性。(The invention discloses an operating handle with a self-locking function, which comprises a handle, wherein one end of a pull rod is connected to the handle, the other end of the pull rod penetrates through an inner hole of a sleeve and then is connected with a hydraulic valve through a steel cable, a pin is arranged in the middle of the pull rod, two kidney-shaped grooves are formed in the side wall of the middle of the sleeve and communicated with the inner hole of the sleeve, two key grooves are formed in the inner hole of the sleeve, the pin can move along the key grooves and the kidney-shaped grooves, two fan-shaped grooves communicated with the inner hole of the sleeve and the key grooves are symmetrically formed in the end surface of the sleeve, which is close to one end of the handle, of the sleeve; a second steel ball, a spring, a mandrel, a spiral pipe and a first steel ball are sequentially arranged in the round hole, and the first steel ball is arranged in the spiral pipe. The handle initial state and the working state both have a self-locking function, so that misoperation caused by mechanical vibration or manual misoperation can be avoided, and the accuracy of the output pressure of the hydraulic valve is effectively ensured.)

1. The operating handle with the self-locking function is characterized by comprising a handle (4), one end of a pull rod (13) is connected to the handle (4), the other end of the pull rod penetrates through an inner hole of a sleeve (14) and then is connected with a hydraulic valve (3) through a steel cable (2), a pin (12) is arranged in the middle of the pull rod (13) along the radial direction, two kidney-shaped grooves are symmetrically formed in the side wall of the middle of the sleeve (14) along the circumferential direction and are communicated with the inner hole of the sleeve (14), two key slots are further symmetrically arranged in the inner hole of the sleeve (14), the key slots are communicated with the two kidney-shaped grooves and extend towards one end, close to the handle (4), of the sleeve (14) along the axial direction, the pin (12) can move along the key slots and the kidney-shaped grooves, two fan-shaped grooves communicated with the inner hole of the sleeve (14) and the key slots are symmetrically formed in the end face, the hole bottom is V-shaped, the two round holes (22) are respectively communicated with the two fan-shaped grooves, and the hole bottoms of the two round holes (22) are respectively communicated with the two kidney-shaped grooves; a second steel ball (11), a spring (10), a mandrel (9), a solenoid (8) and a first steel ball (7) are sequentially arranged in the round hole (22), the first steel ball (7) is arranged in the solenoid (8), in an initial state, the first steel ball (7) protrudes out of the end face of the solenoid (8) under the action of the spring (10), and the second steel ball (11) protrudes out of a side groove face, close to the handle (4), of the kidney-shaped groove.

2. A lever handle with self-locking function according to claim 1 wherein the depth of the scalloped groove is equal to the diameter of the pin (12).

3. A self-locking operating handle according to claim 1 wherein the axis of the keyway passes through the axis of the sleeve (14).

4. The operating handle with self-locking function as claimed in claim 1, wherein the end cap (6) is fixed on one end of the sleeve (14) close to the handle (4).

5. The manipulating handle with the self-locking function according to claim 1, wherein the pull rod (13) is connected with the steel cable in an embedded manner, the connecting portion is cylindrical, and the pull rod (13) and the steel cable connecting rod can rotate relatively.

6. The manipulating handle with self-locking function according to claim 1, wherein the sleeve (14) is provided with a flange and a mounting hole on its circumferential surface.

7. A self-locking bar handle according to claim 1 wherein the locking position of the pin (12) is at an angle α to the rectangular keyway axis of the sleeve (14).

8. The manipulating handle with the self-locking function according to claim 1, wherein the solenoid (8) is threadedly coupled with the cylindrical hole (22) of the sleeve (14).

Technical Field

The invention belongs to the field of control handles, and particularly relates to a control handle with a self-locking function.

Background

A certain hydraulic system of the aircraft needs to be manually operated to control the output pressure of the hydraulic valve, the manual operating handle is located at two different positions of an initial position and a working position, and the hydraulic valve outputs hydraulic pressure with different heights. In order to ensure the accuracy of the output pressure of the hydraulic valve, the operating handle is required to have a locking function at two different positions, so that the operating handle is prevented from rotating and moving along the axial direction. In the initial position, a certain operating force is required to be applied to overcome the locking force for unlocking, and the handle can be rotated; after the handle rotates for a certain angle, the handle can be pulled to move for a certain distance along the axial direction, and the hydraulic valve is controlled to output the conversion of high pressure and low pressure. After the output high pressure and low pressure are converted, the control handle is locked after rotating a certain angle.

Chinese patent CN201811149550.4 discloses a parking brake self-locking operating handle mechanism, which is a helicopter parking brake operating handle, and comprises an operating handle, rivets, end caps, sleeves, cylindrical pins, pull rods, springs and screws. The parking brake self-locking control handle mechanism has a self-locking function in a shutdown state, does not have the self-locking function in a brake releasing state, and is not suitable for a certain hydraulic system of a specified aircraft. In addition, the parking brake self-locking control handle mechanism locks the cylindrical pin by utilizing the R groove, the total stroke of the control handle mechanism is the sum of the effective stroke and the depth of the R groove in use, the cylindrical pin is pulled back to the R groove through the return spring for locking, and the control handle mechanism has a return stroke. A certain hydraulic system of a designated aircraft does not need to be provided with a spring return mechanism, the return stroke of the operating handle mechanism influences the output pressure of the hydraulic valve, and the parking brake self-locking operating handle mechanism is not suitable for the certain hydraulic system of the designated aircraft.

Chinese patent CN2100520037C discloses a carburetor device, which is a hand-held carburetor for providing fuel/air mixture for driving an internal combustion engine, and comprises a pneumatic valve, an actuating lever, a handle, and a locking sleeve, wherein the locking sleeve is provided with a longitudinal groove, the actuating lever is fixed on the handle, and the handle is provided with a lug. In the rest position, the lug on the handle is positioned in the longitudinal groove of the locking sleeve, the starting rod cannot rotate around the axial direction but can move along the axial direction, and the axial locking function is not realized; when the carburetor needs to be started, the handle is pulled to enable the lug of the handle to be withdrawn from the longitudinal groove of the locking sleeve, the handle and the starting rod are rotated to adjust the fuel/air mixture concentration, the locking function is not achieved, and the carburetor device is not suitable for a certain hydraulic system of a designated aircraft.

The prior art of the patent can not meet the requirements of controlling and locking the output pressure of a hydraulic valve of a certain hydraulic system of an appointed aircraft, and in order to meet the use requirements, a control handle with a self-locking function needs to be developed.

Disclosure of Invention

Object of the Invention

The invention provides an operating handle with a self-locking function, which is used for controlling and locking the output pressure of a hydraulic valve of a certain hydraulic system of an appointed aircraft.

Technical solution of the invention

The utility model provides a manipulation handle that possesses self-locking function, the electric iron comprises a handle, pull rod one end is connected on the handle, the other end passes and is connected with the hydrovalve through the cable wire after the sleeve hole, the round pin radially sets up at the pull rod middle part, sleeve middle part lateral wall has seted up two kidney slots along the circumferencial direction symmetry, two kidney slots communicate to the sleeve hole, the sleeve hole still symmetry is provided with two keyways, the keyway is with two kidney slot UNICOM and extend to the sleeve near handle one end along the sleeve axial, the round pin can move along keyway and kidney slot, the sleeve is close to handle one end terminal surface symmetry and has seted up two fan-shaped grooves with the sleeve hole, the keyway UNICOM, the sleeve has seted up two round holes along the axial, the hole bottom is the V type, two round holes UNIC; a second steel ball, a spring, a mandrel, a solenoid and a first steel ball are sequentially arranged in the round hole, the first steel ball is arranged in the solenoid, in an initial state, the first steel ball protrudes out of the end face of the solenoid under the action of the spring, and the second steel ball protrudes out of the groove face of one side, close to the handle, of the kidney-shaped groove.

Preferably, the scallop depth is equal to the pin diameter.

Preferably, the axis of the keyway passes through the sleeve axis.

Preferably, an end cap is fixed to one end of the sleeve close to the handle.

Preferably, the pull rod and the steel cable are connected in an embedded mode, the connecting portion is cylindrical, and the pull rod and the steel cable connecting rod can rotate relatively.

Preferably, the circumferential surface of the sleeve is provided with a flange and a mounting hole.

Preferably, the pin locking position is at an angle α to the rectangular keyway axis of the sleeve.

Preferably, the screw tube is in threaded connection with the cylindrical bore of the sleeve.

The invention has the advantages that: the handle initial state and the working state both have a self-locking function, so that misoperation caused by mechanical vibration or manual misoperation can be avoided, and the accuracy of the output pressure of the hydraulic valve is effectively ensured. The unlocking torque of the operating handle is designed according to human-machine engineering, the operating handle can be automatically locked and manually unlocked, the practicability is good, the popularization and the application are easy, and the practical value is high.

Drawings

Fig. 1 is a schematic diagram of the connection between an operating handle with a self-locking function and a hydraulic valve.

Fig. 2 is a structural view of a control handle with a self-locking function according to the present invention.

Fig. 3 is a partial sectional view of a three-dimensional structure of a control handle with a self-locking function according to the present invention.

Fig. 4 is a structural view of a joystick assembly of a joystick with a self-locking function according to the present invention.

Fig. 5 is a connecting structure of an operating handle with a self-locking function and a steel cable according to the present invention.

Fig. 6 is an overall structure view of the sleeve.

Fig. 7 is a view showing the structure of the sleeve kidney-shaped groove.

Fig. 8 is a view showing the inner structure of the sleeve.

Fig. 9 is a partial cross-sectional view of the internal structure of the sleeve.

Fig. 10 is a diagram illustrating the positioning of the cylindrical pin in an operating state of the operating handle with the self-locking function according to the present invention.

Fig. 11 is a partial sectional view of the internal structure of the coil.

In the figure: 4 handles, 5 rivets, 6 end covers, 7 steel balls I, 8 spiral tubes, 9 mandrels, 10 springs, 11 steel balls II, 12 cylindrical pins, 13 pull rods, 14 sleeves and 15 screws.

Detailed Description

The invention is realized by the following technical scheme.

A control handle with a self-locking function comprises a handle 4, a rivet 5, an end cover 6, a first steel ball 7, a solenoid 8, a mandrel 9, a spring 10, a second steel ball 11, a pin 12, a pull rod 13, a sleeve 14 and a screw 15. Wherein, the handle 4, the rivet 5, the end cover 6, the pin 12 and the pull rod 13 form a control rod component. The pull rod 13 is connected to a wire rope for transmitting manual operating force to the hydraulic valve. As shown in figure 1, the pull rod 13 and the steel cable are connected in an embedded mode, the connecting portion is cylindrical, the pull rod 13 and the steel cable connecting rod can rotate relatively, and the steel cable connecting rod is prevented from rotating when the handle 4 rotates.

As shown in FIG. 6, the sleeve 14 has a flange and mounting holes on its outer circumference for mounting and fixing the operating handle on the machine.

As shown in fig. 7, two slots are symmetrically designed along the circumferential direction under the flange of the sleeve 14, and the slots penetrate into the inner hole of the sleeve 14, and provide installation space for the pin 12, so as to limit the pin 12 from moving and rotating along the axial direction of the sleeve 14 in the initial installation position (see fig. 3).

As shown in fig. 9, a cylindrical through hole (inner hole) is designed in the center of the sleeve 14 for installing the pull rod 13; symmetrical rectangular key grooves are designed in the inner hole of the sleeve 14 and communicated with the kidney-shaped groove, so that a movement space and a guide are provided for the pin 12 to move along the axis of the sleeve 14; the sleeve 14 is provided with two fan-shaped grooves along the axial direction from the end surface close to one end of the handle 4, the depth of the two fan-shaped grooves is consistent with the diameter of the pin 12, and the fan-shaped grooves are used for providing installation space and positioning for the pin 12 when the handle is operated; in the locking position, the axis of the pin 12 and the symmetry plane of the rectangular key groove of the sleeve 14 form a certain angle α, and when the push-pull operating lever assembly is required, firstly, the operating lever assembly needs to be twisted and pulled to rotate by the angle α, so that the pin 12 is aligned with the rectangular key groove of the sleeve 14, and then the push-pull operating can be carried out.

As shown in fig. 2, 8 and 11, two cylindrical holes 22 are designed on the sleeve 14, the front section of the hole is designed as a screw hole (see fig. 8), and the bottom of the hole is V-shaped. The V-shaped bottom of the cylindrical hole 22 is communicated with the kidney-shaped groove 20 (see figure 2); the cylindrical hole 22 is used for installing the second steel ball 11, the spring 10, the mandrel 9 and the solenoid 8 (see figure 2). The screw pipe 8 is externally provided with threads, the center of the screw pipe is provided with a round hole, and the bottom of the round hole is V-shaped (see figure 11) and used for mounting a first steel ball 7 and a mandrel 9. After the second steel ball 11, the spring 10, the mandrel 9 and the first steel ball 7 are installed in the cylindrical hole 22 of the sleeve 14, the spiral pipe 8 is screwed in, the spiral pipe 8 is in threaded connection with the cylindrical hole 22 of the sleeve 14, under the elastic force action of the spring 10, the spherical surface of the first steel ball 7 is higher than the end surface of the spiral pipe 8, the spherical surface of the second steel ball 11 is higher than the waist-shaped groove surface of the sleeve 14, the pin 12 is positioned, the self-locking function is achieved, and the pin 12 is prevented from rotating around the axis of the sleeve 14. Before the operating lever assembly needs to be pushed and pulled, a certain torque needs to be applied to the handle 4, the elastic force acting on the steel ball 7 or the steel ball II 11 is overcome, unlocking is carried out, the handle 4 can be rotated until the pin 12 is aligned with the rectangular key groove of the sleeve 14, and pushing and pulling operation is carried out. The spring force of the spring 10 is designed according to ergonomic requirements, ensuring manual unlocking.

As shown in fig. 1, the joystick assembly is designed with an end cap 6. The end cover 6 is fixed on the end face of the sleeve 14 through a screw 15, the pin 12 is positioned, the axial stroke of the operating rod assembly is limited, and the operating rod assembly is prevented from falling out of the sleeve 14.

After the second steel ball 11, the spring 10, the mandrel 9, the first steel ball 7 and the solenoid 8 are arranged in the sleeve 14, the pull rod 13 is inserted into the cylindrical through hole 21 of the sleeve 14, the pin 12 is arranged on the two sunken fan-shaped grooves of the sleeve 14, and the end cover 6 is fixed on the sleeve 14 by the screw 15. Rotating handle 4 counterclockwise to the limit position, pin 12 is aligned with keyway 24 of sleeve 14, and after pushing the lever assembly to the limit position, rotating handle 4 clockwise to the limit position until the "click" of the return of steel ball two 11 is heard, sleeve 14 and steel ball two 11 lock the position of pin 12 in the initial position, with the lever assembly fitted in place.

When the operating handle needs to be driven to change the working state of the operating handle, the handle 4 is held, a certain torsional force is applied anticlockwise, and the torsional force is transmitted to the second steel ball 11 through the rivet 5, the pull rod 13 and the pin 12. When the force acting on the second steel ball 11 is larger than the force acting on the second steel ball 11 by the spring 10, the spring 10 is compressed, and the second steel ball 11 is pushed into the inner hole of the sleeve 14 to realize unlocking; continuing to rotate the handle 4 anticlockwise to the limit position, aligning the pin 12 with the key groove of the sleeve 14, and axially pulling the handle 4 to the limit position to realize the change of the working state of the hydraulic valve; handle 4 is rotated clockwise to the limit until a "click" is heard to reset ball one 7, sleeve 14 and ball one 7 lock the position of pin 12.

When the operating handle is required to be driven to return to the initial state, the handle 4 is operated reversely.

The above-mentioned embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.