A self-locking mechanism for double-cantilever operating levers on a foldable rocket launcher

Abstract

The present invention discloses a self-locking mechanism for a dual-cantilever operating lever mounted on a foldable rocket launcher, comprising a foldable dual cantilever, wherein the foldable dual cantilever comprises a fixed column, the top end of the fixed column is hinged to a large cantilever that rotates in a horizontal plane, the end of the large cantilever is hinged to a small cantilever through a rotating sleeve, and the end of the small cantilever is hinged to an operating handle; the operating handle is controlled by a synchronous transmission device arranged in the small cantilever, and the synchronous transmission device is driven by a synchronous control device arranged in the rotating sleeve. The present invention does not require additional driving force, and purely mechanical transmission realizes synchronous control of the operating handle, while locking the foldable cantilever.

Description

Technical Field

[0001] The invention relates to the field of folding cantilevers, and in particular to a self-locking mechanism for operating rods of double cantilevers mounted on a folding rocket launcher. Background Art

[0002] During the rocket assembly process, during the hoisting operation, due to limited fixing measures, the hoisted object will rotate relative to the lifting point, which is a major safety hazard. Especially during the rocket assembly process, since the rocket parts are very precise, it is very important to keep the hoisted object stable during the hoisting process. In order to solve this problem, most hoisting operating handles (parts connected to the hoisted object) are made of rigid parts.

[0003] Folding cantilevers are used more and more frequently in rocket assembly operations because of their small footprint and large operating space. For the folding cantilever, since the folding cantilever itself needs to rotate, in order to prevent the operating handle from being subjected to a large torque and resulting in a reduction in life, the operating handle is generally not rigidly connected to the folding cantilever. In this case, the synchronous control of the operating handle generally adopts a motor acceleration and deceleration transmission mode, which can only be used under the condition of electricity as a driving source, and it is also necessary to write complex programs, which greatly reduces the scope of application. In addition, when the folding cantilever is rotating, the hinge of the folding arm also needs to be locked, and the current general method is to use a drive device plus a brake. Therefore, it is necessary to design a folding cantilever that can achieve self-locking of the operating handle. Summary of the invention

[0004] In order to solve the deficiencies in the prior art of the folding cantilever mentioned above, the present invention provides a self-locking mechanism for the operating lever of the dual cantilever on a folding rocket launcher, which does not require additional driving force and realizes synchronous control of the operating handle through pure mechanical transmission, while locking the folding cantilever at the same time.

[0005] The present invention is achieved through the following technical solutions:

[0006] A self-locking mechanism for a double-cantilever operating lever on a foldable rocket launcher comprises a foldable double cantilever, wherein the foldable double cantilever comprises a fixed column, the top end of the fixed column is hinged to a large cantilever that rotates in a horizontal plane, the end of the large cantilever is hinged to a small cantilever through a rotating sleeve, and the end of the small cantilever is hinged to an operating handle; the operating handle is controlled by a synchronous transmission device arranged in the small cantilever, and the synchronous transmission device is driven by a synchronous control device arranged in the rotating sleeve, and the synchronous control device comprises a transmission gear shaft arranged in the rotating sleeve, and a gear that rotates on one side of the top of the transmission gear shaft and moves together with the transmission gear shaft is arranged A first synchronous driving wheel, the first synchronous driving wheel is meshed with a large gear ring, and the large gear ring is movably arranged in the rotating sleeve; a transmission core shaft which rotates relative to the transmission gear shaft is arranged at the center of the transmission gear shaft, and the transmission core shaft is fixedly connected to the second synchronous driving wheel at the top of the transmission gear shaft; an idler wheel group is arranged on the side of the rotating sleeve opposite to the first synchronous driving wheel, and the idler wheel group is connected to the idler wheel shaft, and a top cover is arranged on the top of the rotating sleeve, and the idler wheel shaft is fixedly connected to the top cover, and when the top cover is buckled on the rotating sleeve, one side of the idler wheel group is meshed with the large gear ring, and the other side is meshed with the second synchronous driving wheel.

[0007] Preferably, the top cover is detachably mounted on the rotating sleeve.

[0008] Preferably, the synchronous transmission device includes a control end, which is arranged inside the small cantilever and has a lower end fixedly connected to the operating handle, and a first driven synchronous wheel and a second driven synchronous wheel are fixedly provided on the control end, which are distributed up and down; the transmission gear shaft extends from the bottom of the rotating sleeve and is fixedly connected to the small cantilever, the transmission gear shaft extends to the inside of the small cantilever and is fixedly connected to the first synchronous wheel, the first synchronous wheel is transmission-connected to the first driven synchronous wheel, the transmission core shaft extends from the bottom of the transmission gear shaft and is fixedly connected to the second synchronous wheel, and the second synchronous wheel is transmission-connected to the second driven synchronous wheel.

[0009] Preferably, the first driven synchronous wheel and the second driven synchronous wheel as well as the second driven synchronous wheel and the second driven synchronous wheel are connected via chain and sprocket transmission.

[0010] Preferably, a guide mechanism is further provided between the first synchronous wheel and the second synchronous wheel, and the guide mechanism is fixedly connected to the inner wall of the small cantilever.

[0011] Preferably, the transmission gear shaft is arranged in the rotating sleeve through a bearing group.

[0012] Preferably, an inwardly recessed mandrel support portion is provided at the top center of the transmission gear shaft, the mandrel support portion is provided with a support bearing, and the transmission mandrel is arranged on the support bearing.

[0013] Preferably, the length of the large cantilever is greater than that of the small cantilever.

[0014] Compared with the prior art, the present invention adopts two cantilevers that can be quickly folded and unfolded, which does not take up space while ensuring the working radius; at the same time, a mechanical self-locking mechanism is used to lock the position of the operating handle when the cantilever is unfolded to prevent the lifting part from rotating, and at the same time lock the hinge point of the folded cantilever. This process does not require external power drive, is more convenient to use, and reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a self-locking mechanism of a double-cantilever operating lever on a foldable rocket launcher in the present invention;

[0016] Figure 2 It is an enlarged structural schematic diagram of a synchronous control device of an embodiment of a self-locking mechanism of a double-cantilever operating lever on a foldable rocket launcher in the present invention.

[0017] Figure 3 The figure is a schematic diagram of the principle of an embodiment of a self-locking mechanism of a double-cantilever operating lever on a foldable rocket launcher in the present invention.

[0018] The reference numerals are as follows:

[0019] 1. Fixed column; 2. Large cantilever; 3. Small cantilever; 4. Operating handle; 5. Transmission gear shaft; 6. First synchronous drive wheel; 7. Large gear ring; 8. Transmission spindle; 9. Second synchronous drive wheel; 10. Large idler wheel; 11. Idler wheel shaft; 12. Small idler wheel; 13. Top cover; 14. Control end; 15. First driven synchronous wheel; 16. Second driven synchronous wheel; 17. Transmission chain; 18. First synchronous wheel; 19. Second synchronous wheel; 20. Guide block; 21. Guide bearing. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1As shown, a self-locking mechanism of a double cantilever operating lever on a foldable rocket launcher comprises a foldable double cantilever, wherein the foldable double cantilever comprises a fixed column 1, a large cantilever 2 hingedly connected and rotatable in a horizontal plane is arranged on the top of the fixed column 1, a small cantilever 3 is hingedly arranged at the end of the large cantilever 2 through a rotating sleeve, and an operating handle 4 is hinged at the end of the small cantilever 3; the operating handle 4 is controlled by a synchronous transmission device arranged in the small cantilever 3, and the synchronous transmission device is driven by a synchronous control device arranged in the rotating sleeve.

[0023] A pair of bearings are provided at the hinge between the large cantilever 2 and the fixed column 1 to ensure the stability of the hinge rotation.

[0024] like Figure 2 As shown, the synchronous control device includes a transmission gear shaft 5 arranged in a rotating sleeve, a first synchronous drive shaft protruding upward is fixedly arranged on one side of the top of the transmission gear shaft 5, a rotating first synchronous drive wheel 6 is arranged on the first synchronous drive shaft, the first synchronous drive wheel 6 is meshed with a large gear ring 7, a circle of slide grooves is arranged on the rotating sleeve, the large gear ring 7 is clamped in the slide groove and can rotate freely, and in order to increase the rotation flexibility, a ball can be arranged in the slide groove; a transmission gear shaft 5 is arranged at the center of the transmission gear shaft 5 to rotate relative to the transmission gear shaft 5 The movements of the core shaft 8, the transmission core shaft 8 and the transmission gear shaft 5 do not interfere with each other and are unrelated to each other. The transmission core shaft 8 is fixedly connected to the second synchronous drive wheel 9 at the top of the transmission gear shaft 5; an idler gear set is arranged on the side of the rotating sleeve opposite to the first synchronous drive wheel 6, and the idler gear set is connected to the idler shaft 11. A top cover 13 is arranged on the top of the rotating sleeve, and the idler shaft 11 is fixedly connected to the top cover 13. When the top cover 13 is buckled on the rotating sleeve, one side of the idler gear set is engaged with the large gear ring 7, and the other side is engaged with the second synchronous drive wheel 9.

[0025] The top cover 13 is detachably mounted on the rotating sleeve, and can be inserted to realize the self-locking function when the large cantilever 2 and the small cantilever 3 are at different angles. In order to ensure convenient and quick insertion, the idler wheel group is provided with two idlers, one large and one small, which overlap and are fixedly connected. The large idler wheel 10 is meshed with the large gear ring 7 at the top, and the small idler wheel 12 is meshed with the second synchronous drive wheel 9 at the bottom. A positioning pin is provided on the side of the top cover 13, which is clamped with the pin groove on the rotating sleeve to clamp the top cover 13 to prevent the top cover 13 from falling out and rotating.

[0026] The synchronous transmission device includes a control end 14, which is arranged inside the small cantilever 3 and the lower end is fixedly connected to the operating handle 4, and the control end 14 is fixedly provided with a first driven synchronous wheel 15 and a second driven synchronous wheel 16 distributed up and down; the transmission gear shaft 5 extends from the bottom of the rotating sleeve and is fixedly connected to the small cantilever 3, the transmission gear shaft 5 extends to the inside of the small cantilever 3 and is fixedly connected to the first synchronous wheel 18, the first synchronous wheel 18 is transmission-connected to the first driven synchronous wheel 15, the transmission core shaft 8 extends from the bottom of the transmission gear shaft 5 and is fixedly connected to the second synchronous wheel 19, and the second synchronous wheel 19 is transmission-connected to the second driven synchronous wheel 16, such as Figure 2 shown.

[0027] Reference Figure 3 The following describes the principle of self-locking of this embodiment when the large cantilever 2 and the small cantilever 3 are fully unfolded.

[0028] When the large cantilever 2 and the small cantilever 3 are fully unfolded, the top cover 13 is closed, and two transmission routes are formed, namely:

[0029] Line 1: large gear ring 7 - first synchronous driving wheel 6 - transmission gear shaft 5 (small cantilever 3) - first synchronous wheel 18 - first driven synchronous wheel 15 - control end 14;

[0030] Line 2: large gear ring 7 - idler wheel set - second synchronous driving wheel 9 (transmission spindle 8) - second synchronous wheel 19 - second driven synchronous wheel 16 - control end 14;

[0031] like Figure 3 As shown, line 2 has an additional set of idler gear transmission compared to line 1, and the actual rotation direction when output to the control end 14 is completely opposite. Therefore, when the control end 14 has a tendency to rotate, it is transmitted in the reverse direction through one of the lines to drive the large gear ring 7, and then the large gear ring 7 is fed back to the control end 14 through another line, and a completely opposite rotation direction will be obtained, thereby achieving the purpose of self-locking. The transmission gear shaft 5 and the small cantilever 3 are fixedly connected. Since the entire transmission system is in a self-locking state, the small cantilever 3 is also in a locked state.

[0032] In a preferred embodiment of the present invention, the first driven synchronous wheel 15 and the first synchronous wheel 18 as well as the second synchronous wheel 19 and the second driven synchronous wheel 16 are connected via a transmission chain 17 and a sprocket. The chain sprocket is more suitable for self-locking to avoid slipping that occurs when the belt drive is self-locking.

[0033] In a preferred embodiment of the present invention, a guide mechanism is further provided between the first synchronous wheel 18 and the second synchronous wheel 19, and the guide mechanism is fixedly connected to the inner wall of the small cantilever 3. The guide mechanism includes a guide block 20 fixedly connected to the inner wall of the small cantilever 3, a guide bearing 21 is provided in the guide block 20, and the guide bearing 21 is sleeved on the transmission core shaft 8. The guide mechanism is used to stabilize the synchronous transmission device and prevent the extended end of the transmission core shaft 8 from shaking under the pulling force of the transmission chain 17.

[0034] In a preferred embodiment of the present invention, the transmission gear shaft 5 is disposed in a rotating sleeve via a bearing group. Generally, at least two upper and lower bearing groups are disposed to ensure the movement stability of the transmission gear shaft 5 .

[0035] In a preferred embodiment of the present invention, an inwardly recessed core shaft support portion is provided at the top center of the transmission gear shaft 5, the core shaft support portion is provided with a support bearing, and the transmission core shaft 8 is arranged on the support bearing to ensure that the movement of the transmission core shaft 8 is unrelated to the transmission gear shaft 5 and does not interfere with each other.

[0036] In a preferred embodiment of the present invention, the length of the large cantilever 2 is greater than that of the small cantilever 3 .

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-locking mechanism for a dual-cantilever operating lever on a foldable rocket launcher, comprising a foldable dual cantilever, wherein the foldable dual cantilever comprises a fixed column, the top of the fixed column is hinged to a large cantilever that rotates in a horizontal plane, the end of the large cantilever is hinged to a small cantilever through a rotating sleeve, and the end of the small cantilever is hinged to an operating handle; characterized in that: The operating handle is controlled by a synchronous transmission device arranged in the small cantilever, and the synchronous transmission device is driven by a synchronous control device arranged in the rotating sleeve, and the synchronous control device includes a transmission gear shaft arranged in the rotating sleeve, and a first synchronous driving wheel that moves with the transmission gear shaft is rotatably arranged on one side of the top of the transmission gear shaft, and the first synchronous driving wheel is meshed with a large gear ring, and the large gear ring is movably arranged in the rotating sleeve; a transmission core shaft that rotates relative to the transmission gear shaft is arranged at the center of the transmission gear shaft, and the transmission core shaft is fixedly connected to the second synchronous driving wheel at the top of the transmission gear shaft; an idler wheel group is arranged on the side of the rotating sleeve opposite to the first synchronous driving wheel, and the idler wheel group is connected to the idler wheel shaft, and a top cover is arranged on the top of the rotating sleeve, and the idler wheel shaft is fixedly connected to the top cover. When the top cover is buckled in the When the shaft sleeve is rotated, one side of the idler wheel group is meshed with the large gear ring, and the other side is meshed with the second synchronous driving wheel; the synchronous transmission device includes a control end, which is arranged inside the small cantilever and the lower end is fixedly connected to the operating handle, and the control end is fixedly provided with a first driven synchronous wheel and a second driven synchronous wheel distributed up and down; the transmission gear shaft extends from the bottom of the rotating shaft sleeve and is fixedly connected to the small cantilever, the transmission gear shaft extends to the inside of the small cantilever and is fixedly connected to the first synchronous wheel, the first synchronous wheel is transmission-connected to the first driven synchronous wheel, the transmission core shaft extends from the bottom of the transmission gear shaft and is fixedly connected to the second synchronous wheel, the second synchronous wheel is transmission-connected to the second driven synchronous wheel, and the first synchronous wheel and the first driven synchronous wheel, as well as the second synchronous wheel and the second driven synchronous wheel are all transmission-connected through chain sprockets.

2. The self-locking mechanism of the double cantilever operating lever of a foldable rocket launcher according to claim 1 is characterized in that: The top cover is detachably mounted on the rotating shaft sleeve.

3. The self-locking mechanism of the double cantilever operating lever of a foldable rocket launcher according to claim 1 is characterized in that: A guide mechanism is also provided between the first synchronous wheel and the second synchronous wheel, and the guide mechanism is fixedly connected to the inner wall of the small cantilever.

4. The self-locking mechanism of the double cantilever operating lever of a foldable rocket launcher according to claim 1 is characterized in that: The transmission gear shaft is arranged in the rotating sleeve through a bearing group.

5. The self-locking mechanism of the double cantilever operating lever of a foldable rocket launcher according to claim 1 is characterized in that: The top center of the transmission gear shaft is provided with an inwardly recessed mandrel support portion, the mandrel support portion is provided with a support bearing, and the transmission mandrel is arranged on the support bearing.

6. The self-locking mechanism of the double cantilever operating lever of a foldable rocket launcher according to claim 1, characterized in that: The length of the large cantilever is greater than that of the small cantilever.

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