CN114275654A

CN114275654A - Scissor-arm type rapid delivery method

Info

Publication number: CN114275654A
Application number: CN202011036797.2A
Authority: CN
Inventors: 张刚
Original assignee: Xixian New Area Guruchi Aviation Technology Co ltd
Current assignee: Xixian New Area Guruchi Aviation Technology Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2022-04-05

Abstract

The invention discloses a shear arm type rapid throwing method, which applies a lever principle, takes a high-strength bearing shaft as a fulcrum, applies the gravity of an object to the end point of a shear arm, a force loading device only needs to apply half of total locking force, the shear arm device reaches a stress balance state, and a lock hook locks and locks the object; through the control trigger power loading device lose power, the latch hook does not have the effect of locking power atress thing weight, cuts arm gravity according to lever principle simultaneously and acts on the latch hook, and the latch hook is opened with higher speed, has realized the purpose that the object was put in fast to the latch hook. The invention comprehensively solves the problems of the locking force requirement of the locking hook and the time required for throwing the object, can reduce the locking force requirement in multiples and save the time required for throwing, and has the characteristics of large force with small force, short throwing time, safety, reliability and the like.

Description

Scissor-arm type rapid delivery method

Technical Field

The invention belongs to the technical field of throwing equipment, and particularly relates to a scissor-arm type rapid throwing method.

Background

In industrial production and scientific research experiments, some objects need to be put in, and at the moment, the locking of the equipment and the object putting in are needed.

According to research, the current throwing equipment generally adopts the mode of latch hook hoist and mount throwing. The method has the defects that the gravity of the object is totally concentrated on the latch hook, and the safety of the object during hoisting can be ensured only by providing the locking force equal to the gravity of the object. In addition, the object needs to be put in by manually locking and unlocking the lock hook, and the time for putting in the object is long.

Therefore, the method for saving labor and simultaneously quickly putting is significant and has application prospect.

Disclosure of Invention

The present invention aims to solve the above problems and provide a scissor-type quick release method.

The invention realizes the purpose through the following technical scheme:

a scissor-arm type quick release method comprises the following steps:

a main body frame for supporting, connecting and fixing the scissor arm device;

the force loading device is used for providing locking force;

the shear arm device comprises a lock hook for realizing locking and quickly throwing an object; the high-strength bearing shaft is used for bearing a shearing force formed by the interaction of the gravity of an object and a locking force applied by the force loading device at the end point of the shear arm; a shear arm for providing a large moment arm;

the high-strength bearing shaft is used for connecting two parts of lock hooks in a cross mode, the shear arms are fixed on the end faces of the lock hooks, the force loading devices are fixed at two ends of the main body frame, and the main body frame is used for connecting and fixing the shear arm devices through the high-strength bearing shaft.

A shear arm type rapid releasing method, a stress principle when a lock hook is locked, comprises the following steps:

the high-strength bearing shaft is a fulcrum of the shear arm device, belongs to a stress concentration point, and is subjected to a shearing force formed by interaction of the gravity of an object and a locking force applied by a force loading device at the end point of the shear arm; the high-strength bearing shaft is arranged at the position of the lock hook, the center position of the lock hook acted by the gravity of an object is closer to the fulcrum, the formed force arm is smaller, a longer shear arm is fixed on the end face of the lock hook, the center position of the locking force applied to the two ends of the shear arm device by the force loading device is farther from the fulcrum, and the formed force arm is larger;

the lever principle is applied, a high-strength bearing shaft is used as a fulcrum of the shearing arm device, the gravity of an object acts on the end points of the shearing arms, the total locking force to be applied is divided into two parts by the shearing arms fixed on the end surfaces of the locking hooks, the force loading devices at the two ends of the main body frame only need to apply one half of the total locking force, the shearing arm device can reach a stress balance state, the locking hooks lock the object, and the force arm of the gravity of the object is far smaller than the force arm of the locking force at the two ends of the shearing arm device, so that the locking force applied by the force loading devices is far smaller than the gravity of the object, and the purpose of 'exerting a great force with small force' is realized.

A scissor-arm type quick release method, a quick release action execution principle, comprises:

the force on/off of the device can be triggered instantly by controlling the force loading device; when the force is obtained, the locking force applied by the force loading device and the gravity of the object are balanced in stress through the arm shearing device, so that the locking hook can be ensured to be in a safe locking state; when the force is lost, the locking hook has no locking force and is acted by the weight of an object, meanwhile, the shearing arm gravity acts on the locking hook according to the lever principle, the unlocking of the locking hook can be accelerated, the object is quickly thrown in the locking hook, and the purposes of locking and quickly throwing in the locking hook are achieved.

The invention has the beneficial effects that:

the locking hook locking force releasing device has the advantages that the locking hook locking force demand problem and the object releasing time problem are comprehensively solved, the locking force reducing requirement can be doubled, the releasing time can be saved, and the locking hook locking force releasing device has the advantages of being powerful in small force, short in releasing time, safe and reliable and the like.

Drawings

Fig. 1 is a structural view of the whole of the present application.

Fig. 2 is a structural view of the shear arm device in the present application.

Fig. 3 is a force principle diagram of the locking hook in the present application.

Fig. 4 is a schematic diagram of the execution of the quick latch hook releasing action in the present application.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 and 2, a scissor-arm type rapid delivery method includes the following steps:

a main body frame 3 for supporting, connecting and fixing the scissor arm device 1;

a force loading device 2 for providing a locking force;

the shear arm device 1 comprises a lock hook 11 for realizing locking and quickly throwing objects; the high-strength bearing shaft 12 is used for bearing shearing force formed by interaction of the gravity of an object and the locking force applied by the force loading device 2 at the end point of the shear arm 13; a scissor arm 13 for providing a large moment arm;

the high-strength bearing shaft 12 connects the two lock hooks 11 in a cross manner, the shear arms 13 are fixed on the end faces of the lock hooks 12, the force loading devices 2 are fixed at two ends of the main body frame 3, and the main body frame 3 connects and fixes the shear arm devices 1 through the high-strength bearing shaft 12.

As shown in fig. 3, a shear arm type rapid releasing method, a principle of stress when a lock hook is locked, includes:

L′₁＝L₁sinθ；

F′cosθ+F′cosθ＝G；

FL₂+FL₂＝F′L′₁+F′L′₁；

FL₂+FL₂＝GL₁tanθ；

wherein G ═ mg;

m-mass of the object;

f-locking force applied by the force loading device;

L₁-the distance of the centre of gravity of the object from the centre of the fulcrum;

L₂the arm of the locking force.

The sum of the moments formed by two same locking forces applied by the force loading devices 2 at the two ends of the main body frame 3 is equal to the moment formed by the gravity of an object acting on the center of the locking hook 11, the stress of the arm shearing device 1 reaches a balanced state, and the locking hook 11 can be ensured to be in a safe locking state.

Due to L₂Much greater than L₁，

According to, FL₂+FL₂＝GL₁tan θ can be:

f is much smaller than G;

therefore, the scissor-arm type hoisting method achieves the purpose of large force with small force.

As shown in fig. 4, a scissor-arm type fast releasing method, a latch hook fast releasing action executing principle, includes:

L′₁＝L₁sinθ；

F′cosθ+F′cosθ＝G；

F₁＝Fcosα；

F₁L₂+F₁L₂＝F′L′₁+F′L′₁；

FcosαL₂+FcosαL₂＝GL₁tanθ；

wherein G ═ mg;

m-mass of the object;

f-locking force applied by the force loading device;

L₂the arm of the locking force.

When the lock hook 11 is put in quickly, the force loss F of the trigger force loading device 2 is controlled to be 0, the lock hook 11 has no locking force under the action of the gravity G of an object, and meanwhile, the gravity G' of the shear arm 13 acts on the lock hook 11 according to the lever principle, so that the opening of the lock hook 11 can be accelerated, and the lock hook 11 puts in the object quickly;

therefore, the shear arm type hoisting method achieves the purpose of rapid throwing.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A scissor-arm type rapid release method is characterized by comprising the following steps:

a main body frame (3) for supporting, connecting and fixing the shear arm device (1);

a force loading device (2) for providing a locking force;

the shear arm device (1) comprises a lock hook (11) for realizing locking and quickly throwing objects; the high-strength bearing shaft (12) is used for bearing shearing force formed by interaction of the gravity of an object and locking force applied by the force loading device (2) at the end point of the shear arm (13); a scissor arm (13) for providing a large moment arm;

two parts of lock hooks (11) are connected in a cross mode through a high-strength bearing shaft (12), shear arms (13) are fixed to the end faces of the lock hooks (12), force loading devices (2) are fixed to the two ends of a main body frame (3), and the main body frame (3) connects and fixes the shear arm devices (1) through the high-strength bearing shaft (12).

2. The scissor-arm type quick release method according to claim 1, wherein the principle of stress when the latch hook is locked comprises the following steps:

the high-strength bearing shaft (12) is a fulcrum of the shear arm device (1) and belongs to a stress concentration point, and the stress is a shearing force formed by interaction of the gravity of an object and a locking force applied by the force loading device (2) at the end point of the shear arm (13); the high-strength bearing shaft (12) is arranged at the position of the lock hook (11), the distance from the center position of the object gravity acting on the lock hook (11) to the fulcrum is short, the formed moment arm is small, a longer shear arm (13) is fixed on the end surface of the lock hook (11), the distance from the center position of the locking force applied to the two ends of the shear arm device (1) by the force loading device (2) to the fulcrum is long, and the formed moment arm is large;

by applying a lever principle, a high-strength bearing shaft (12) is taken as a fulcrum of a shear arm device (1), the gravity of an object acts on the end point of the shear arm (13), the shear arm (13) fixed on the end surface of a lock hook (11) divides the total locking force to be applied into two parts, force loading devices (2) at two ends of a main body frame (3) only need to apply half of the total locking force, the shear arm device (1) can reach a stress balance state, and the lock hook (11) locks the object tightly, and the force arm of the gravity of the object is far smaller than the force arm of the locking force at two ends of the shear arm device (1), so that the locking force applied by the force loading devices (2) is far smaller than the gravity of the object, and the aim of large force with small force is achieved.

3. The scissor-arm rapid release method according to claim 1, wherein the rapid release action execution principle comprises the following steps:

the force obtaining and losing can be triggered instantly by controlling the force loading device (2); when the force is obtained, the locking force applied by the force loading device (2) and the gravity of an object reach stress balance through the shearing arm device (1), and the locking hook (11) can be ensured to be in a locking state; when force is lost, the locking hook (11) has no locking force and is acted by the weight of an object, meanwhile, the gravity of the shear arm (13) acts on the locking hook (11) according to the lever principle, the locking hook (11) can be accelerated to be opened, the object is quickly thrown in the locking hook (11), and the purposes of locking and quickly throwing in the locking hook (11) are achieved.