CN215974774U

CN215974774U - Manual-automatic integrated quick lifting mechanism

Info

Publication number: CN215974774U
Application number: CN202120491599.9U
Authority: CN
Inventors: 钱前进; 徐亚凯; 刘圣强; 杨宏亮; 侯亚伟; 陈哲
Original assignee: 713th Research Institute of CSIC
Current assignee: 713th Research Institute of CSIC
Priority date: 2021-02-07
Filing date: 2021-03-08
Publication date: 2022-03-08
Anticipated expiration: 2031-03-08

Abstract

The utility model provides a manual-automatic integrated quick lifting mechanism which comprises a mounting bottom plate and a lifting platform above the mounting bottom plate; at least two screw mechanisms are arranged between the mounting bottom plate and the lifting platform, any one of a screw rod or a nut of each screw mechanism is rotatably arranged on the mounting bottom plate, and the other screw rod or nut is lifted and connected with the lifting platform; a transmission gear is fixedly arranged outside one of the screw rods or the nuts in each screw rod mechanism, and the transmission gear is meshed with the same annular transmission chain to form a synchronous transmission large gear set; the mounting bottom plate is provided with a worm and gear mechanism for driving the transmission chain to move; the output shaft of the driving mechanism and the worm can be connected in a break-make mode. The utility model furthest compresses the volume of the lifting structure after complete landing and meets the requirement on the height in the equipment delivery process.

Description

Manual-automatic integrated quick lifting mechanism

Technical Field

The utility model belongs to the field of launching of vehicle-mounted light high-mobility defense weapons, and particularly relates to a manual-automatic integrated quick lifting mechanism.

Background

In modern local wars under high technical conditions, in order to realize the transition from regional defense to global combat, China puts forward strategic requirements of 'maneuvering combat and three-dimensional attack and defense' on army, and requires that army quickly form light high maneuvering armed force. Because the light high-mobility weapon has the characteristic of light weight, the helicopter and the transporter can realize the quick delivery on the ground, in the air and in the sea, and can quickly travel along with a high-speed mobility troop after being deployed in place, thereby realizing the concomitant air defense.

The delivery modes of high-speed rail transportation and air drop of a conveyor all put forward strict requirements on the equipment height of the whole vehicle, and various elevated equipment modules are required to be capable of lifting and can be manually lifted under a specific state.

SUMMERY OF THE UTILITY MODEL

The utility model provides a manual-automatic integrated quick lifting mechanism.

The object of the utility model is achieved in the following way: a manual-automatic integrated quick lifting mechanism comprises a mounting bottom plate and a lifting platform above the mounting bottom plate; at least two screw mechanisms which can synchronously lift are arranged between the mounting bottom plate and the lifting platform, any one of a screw rod or a nut of each screw mechanism is rotatably arranged on the mounting bottom plate, and the other screw rod or the nut of each screw mechanism lifts and is connected with the lifting platform; a transmission gear is fixedly arranged outside one of the screw rods or the nuts in each screw rod mechanism, and all the transmission gears are meshed with the same annular transmission chain to form a large synchronous transmission gear set; the mounting bottom plate is provided with a worm gear mechanism for driving the transmission chain to move, and a worm of the worm gear mechanism is driven to rotate by a driving mechanism arranged on the mounting bottom plate; the output shaft of the driving mechanism and the worm can be connected in a break-make mode.

The driving mechanism is a motor, a motor pinion is arranged on the motor, and a worm pinion is arranged at one end of the worm, which corresponds to the motor; the motor is arranged on the mounting bottom plate in a horizontally sliding or up-and-down sliding mode, so that the motor pinion and the worm pinion are meshed or separated.

The motor is arranged on the motor mounting frame, and the motor mounting frame is connected with the mounting bottom plate through a sliding chute and sliding rail mechanism.

The driving mechanism is a motor, and a clutch is arranged between an output shaft of the motor and one end of the worm.

And a crank is arranged at one end of the worm, which is far away from the driving mechanism.

The worm is meshed with a transmission gear wheel serving as a worm wheel in the worm and gear mechanism, and the transmission gear wheel is rotatably arranged on the mounting base plate; the transmission gear wheel is meshed with the transmission chain.

The transmission gear is positioned on the inner side of the ring of the annular transmission chain; the transmission gearwheel is located outside the ring of the transmission chain.

The lead screw is rotationally arranged on the mounting bottom plate, and the transmission gear is arranged on the lead screw; the nut is in a sleeve shape with threads arranged inside; the lifting platform is arranged at the upper end of the sleeve-shaped nut.

The utility model has the beneficial effects that: the lifting structure is made into an independent module, so that the structure has high mobility, and the application of the structure on different platforms can be realized. Because the load of the lifting equipment is small, a mode of heightening by combining a nut in a sleeve shape and a screw rod can be used, and the volume of the lifting structure after complete falling is compressed to the maximum extent under the condition of meeting the lifting height, so that the requirement of the equipment on the height in the delivering process can be met. The worm gear structure has the auto-lock nature, even also can avoid lift platform photoelectric equipment to descend under self action of gravity under the mode of manual lift.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of the full descent of the elevating platform in the automatic elevating mode.

Fig. 3 is a schematic view of the lift platform fully raised in the manual mode of operation.

Wherein, 1 is a lifting platform, 2 is a nut, 3 lead screws, 4 is a synchronous transmission big gear set, 5 is a lead screw bearing, 6 is a transmission chain, 7 is a worm, 8 is a worm bearing seat, 9 is a worm pinion, 10 is a motor, 11 is a motor mounting rack, 12 is a crank, 13 is a mounting base plate, 14 is a motor pinion, 15 is a chute slide rail mechanism, and 16 is a transmission big gear.

Detailed Description

While the utility model will be described in detail and with reference to the drawings and specific examples, it is to be understood that the utility model is not limited to the precise construction and details shown and described herein, but is capable of numerous rearrangements and modifications as will now become apparent to those skilled in the art. In the present invention, unless otherwise specifically defined and limited, technical terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention pertains. The terms "connected", "fixed", "arranged" and the like are to be understood in a broad sense, and may be fixedly connected, detachably connected or integrated; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless explicitly defined otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, a first feature may be "on" or "over" or "above" a second feature, and the like, may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" or "beneath" a second feature may be directly under or obliquely under the first feature or may simply mean that the first feature is at a lesser level than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

As shown in fig. 1-3, a manual-automatic integrated quick lifting mechanism comprises a mounting base plate 13 and a lifting platform 1 above the mounting base plate 13; at least two screw mechanisms which can synchronously lift are arranged between the mounting bottom plate 13 and the lifting platform 1, any one of a screw 3 or a nut 2 of the screw mechanism is rotatably arranged on the mounting bottom plate 13, and the other one of the screw mechanisms lifts and is connected with the lifting platform 13; a transmission gear is fixedly arranged outside one of the screw rods 3 or the nuts 2 in each screw rod mechanism, and all the transmission gears are meshed with the same annular transmission chain 6 to form a synchronous transmission large gear set 4; the mounting bottom plate 13 is provided with a worm gear mechanism for driving the transmission chain 6 to move, and a worm 7 of the worm gear mechanism is driven to rotate by a driving mechanism arranged on the mounting bottom plate 13; the output shaft of the driving mechanism and the worm 7 can be connected in a break-make mode. The worm 7 can be driven by the driving mechanism to rotate, then the driving chain 6 is driven to move, and finally the lifting of the lifting platform 1 is realized. After the driving mechanism is disconnected with the worm 7, the worm 7 can be manually rotated to realize the lifting of the lifting platform 1. The worm gear mechanism has self-locking performance, and can prevent the lifting platform 1 and the photoelectric equipment on the lifting platform from falling under the action of self gravity even in a manual lifting working mode.

The driving mechanism can be a motor 10, a motor pinion 14 is arranged on the motor 10, and a worm pinion 9 is arranged at one end of the worm 7 corresponding to the motor 10; the motor 10 is horizontally or vertically slidably disposed on the mounting base 13 such that the motor pinion 14 and the worm pinion 9 are engaged or separated. Here, the horizontal sliding means sliding parallel to the surface of the mounting base 13, and the motor pinion 14 is laterally close to or away from the worm pinion 9. The up-and-down sliding means sliding perpendicularly to the surface of the mounting base plate 13, and the motor pinion 14 approaches or departs from the worm pinion 9 from above or below.

Specifically, the motor 10 is disposed on the motor mounting bracket 11, and the motor mounting bracket 11 is connected to the mounting base plate 13 through a sliding chute and sliding rail mechanism 15. In a specific structure, a sliding block can be arranged at the bottom of the motor mounting frame 11, and at least one sliding groove or two parallel sliding grooves are arranged on the mounting bottom plate 13. The motor mounting rack 11 slide block slides in the slide groove. Or the mounting bottom plate 13 is provided with a slide rail, and the bottom of the motor mounting rack 11 is provided with a slide groove matched with the slide rail. When the motor pinion 14 and the worm pinion 9 are in a meshed state, a limiting mechanism is arranged between the motor mounting frame 11 and the mounting bottom plate 13. The limiting mechanism may be a screw for fixing the motor mounting bracket 11 to the mounting base plate 13, or a limiting pin or a limiting block which is easier to mount and dismount. Preferably, the mounting base plate 13 is provided with limiting holes, the limiting holes are respectively arranged on two sides of the motor mounting frame 11, and limiting pins are arranged in the limiting holes. The motor mounting frame 11 is limited to move along the sliding groove in the mounting bottom plate 13 through a limiting pin, and the motor pinion 14 and the worm pinion 9 are guaranteed to be meshed stably. When the motor 10 needs to be removed, the positioning pin is taken out.

Or, the driving mechanism is a motor 10, and a clutch is arranged between an output shaft of the motor and one end of the worm 7. The transmission and the on-off of the power of the motor 10 are realized through the clutch.

And a crank handle 12 is arranged at one end of the worm 7 far away from the driving mechanism. Specifically, one end of the worm 7, which is far away from the driving mechanism, is a triangular prism-shaped shaft, and a crank 12, the section of one end of which corresponds to the shape of the triangular prism-shaped shaft, is arranged on the triangular prism-shaped shaft. The crank 12 can be conveniently mounted on the triangular prism-shaped shaft of the worm and can be conveniently taken down.

The worm 7 is meshed with a transmission large gear 16 serving as a worm wheel in the worm and gear mechanism, and the transmission large gear 16 is rotatably arranged on the mounting base plate 13; the driving gearwheel 16 meshes with the driving chain 6. The lead angle of the worm 7 is smaller than the equivalent friction angle of the large transmission gear 16 meshed with the worm, so that the self-locking of the worm and gear mechanism is ensured.

The transmission gear is positioned on the inner side of the ring of the annular transmission chain 6; the driving gearwheel 16 is located outside the loop of the driving chain 6. In another scheme, a worm wheel in the worm gear mechanism can be arranged coaxially with any one of the transmission gears.

Further, the lead screw 3 is rotatably arranged on the mounting bottom plate 13, and the transmission gear is arranged on the lead screw 3; the nut 2 is in a sleeve shape with threads arranged inside; the lifting platform 1 is arranged at the upper end of the sleeve-shaped nut 2.

In a specific embodiment, four screw mechanisms that synchronously lift are arranged between the lifting platform 1 and the mounting base plate 13. The four screw mechanisms include a screw 3 rotatably provided on the mounting base plate 13 through a screw bearing 5 and a nut 2 in a sleeve shape rotatably provided on the screw 13. Each screw rod 3 is provided with a transmission gear, and a synchronous transmission large gear set 4 is formed by the four transmission gears. The power input is a motor 10, and the motor 10 is arranged on a motor mounting rack 11 and drives a motor pinion 14 to rotate coaxially. The worm pinion 9 is meshed with the motor pinion 14, coaxially linked with the worm 7 and installed on the worm bearing seat 8 together, so that power is transmitted to the worm 7; the other end of the worm 7 is designed with a triangular prism-shaped shaft, and power can be manually input through a crank handle 12. The worm 7 meshes with a driving gearwheel 16 as a worm wheel, rotating the direction of rotation by 90 °. The driving gearwheel 16 is engaged with the driving chain 6 to drive the driving chain 6 to move, the driving chain 6 is respectively engaged with the driving gears in the synchronous driving gearwheel group 4, and at the moment, the power is transmitted to the synchronous driving gearwheel group 4. The synchronous transmission large gear set 4 is coaxially linked with the screw rod 3 and is installed on a screw rod bearing 5 together, so that power is transmitted to the screw rod 3. The sleeve-shaped nut 2 and the lifting platform 1 are welded into a whole. The nut 2 is matched with the screw thread on the screw rod 3, and the lifting platform 1 can move upwards along the screw rod 3 through the rotation of the screw rod.

When the method is concretely implemented; in the transportation state, lead screw 3 retracts in the nut 2 of sleeve shape, falls lift platform 1 and the photoelectric equipment on it in the protection casing completely to satisfy the requirement of transportation limit for height. Under operating condition, the photoelectric equipment rises out of the protective cover, and has two working modes: under the automatic lifting working mode, the motor pinion 14 is meshed with the worm pinion 9, the power of the motor 10 is transmitted to the lead screw 3, and the lifting platform can move up and down along the axial direction of the lead screw. After the lifting platform is raised in place, the motor 10 locks to achieve locking. Under the manual lifting mode, motor mounting bracket 11 slides to one side along spout slide rail mechanism 15, and motor pinion 14 breaks away from the meshing with worm pinion 9, embolias the triangular prism shape axle of worm 7 one end with crank 12 on, drives worm 7 through hand and rotates, finally with power transmission to lifting platform 1 on, realize lifting platform 1 along the ascending elevating movement of lead screw 3 axial direction. The lead angle of the designed worm 7 is smaller than the equivalent friction angle of the transmission big gear 16 meshed with the lead angle, the mechanism has reverse self-locking capability, and cannot fall under the action of the gravity of photoelectric equipment after the lifting platform rises to the right position, so that the locking function is realized.

It should be noted that terms such as "central," "lateral," "longitudinal," "length," "width," "thickness," "height," "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "clockwise," "counterclockwise," and the like used in the description are used for indicating the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated. And therefore should not be construed as limiting the scope of the utility model.

The above description is only for the preferred embodiment of the present invention, not for all embodiments, and the scope of the present invention is not limited thereto. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. Where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention. It should be noted that those skilled in the art and any person skilled in the art can equally substitute or change the technical solution of the present invention and the inventive concept thereof, and make several changes and improvements without departing from the spirit of the present invention and the general inventive concept, which should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a manual-automatic quick elevating system which characterized in that: the lifting platform comprises a mounting bottom plate and a lifting platform above the mounting bottom plate; at least two screw mechanisms which can synchronously lift are arranged between the mounting bottom plate and the lifting platform, any one of a screw rod or a nut of each screw mechanism is rotatably arranged on the mounting bottom plate, and the other screw rod or the nut of each screw mechanism lifts and is connected with the lifting platform; a transmission gear is fixedly arranged outside one of the screw rods or the nuts in each screw rod mechanism, and all the transmission gears are meshed with the same annular transmission chain to form a large synchronous transmission gear set; the mounting bottom plate is provided with a worm gear mechanism for driving the transmission chain to move, and a worm of the worm gear mechanism is driven to rotate by a driving mechanism arranged on the mounting bottom plate; the output shaft of the driving mechanism and the worm can be connected in a break-make mode.

2. The manual-automatic integrated quick lifting mechanism is characterized in that: the driving mechanism is a motor, a motor pinion is arranged on the motor, and a worm pinion is arranged at one end of the worm, which corresponds to the motor; the motor is arranged on the mounting bottom plate in a horizontally sliding or up-and-down sliding mode, so that the motor pinion and the worm pinion are meshed or separated.

3. The manual-automatic integrated quick lifting mechanism is characterized in that: the motor is arranged on the motor mounting frame, and the motor mounting frame is connected with the mounting bottom plate through a sliding chute and sliding rail mechanism.

4. The manual-automatic integrated quick lifting mechanism is characterized in that: the driving mechanism is a motor, and a clutch is arranged between an output shaft of the motor and one end of the worm.

5. The manual-automatic integrated quick lifting mechanism is characterized in that: and a crank is arranged at one end of the worm, which is far away from the driving mechanism.

6. The manual-automatic integrated quick lifting mechanism is characterized in that: the worm is meshed with a transmission gear wheel serving as a worm wheel in the worm and gear mechanism, and the transmission gear wheel is rotatably arranged on the mounting base plate; the transmission gear wheel is meshed with the transmission chain.

7. The manual-automatic integrated quick lifting mechanism is characterized in that: the transmission gear is positioned on the inner side of the ring of the annular transmission chain; the transmission gearwheel is located outside the ring of the transmission chain.

8. The manual-automatic integrated rapid lifting mechanism according to any one of claims 1 to 7, characterized in that: the lead screw is rotationally arranged on the mounting bottom plate, and the transmission gear is arranged on the lead screw; the nut is in a sleeve shape with threads arranged inside; the lifting platform is arranged at the upper end of the sleeve-shaped nut.