CN112050686B

CN112050686B - Double-rocker auxiliary drive paging type target surface dynamic display hidden target

Info

Publication number: CN112050686B
Application number: CN202010849252.7A
Authority: CN
Inventors: 王佳琦; 于化东; 许金凯; 王晶东; 于占江; 陈广俊
Original assignee: Changchun University of Science and Technology
Current assignee: Changchun University of Science and Technology
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-06-17
Anticipated expiration: 2040-08-21
Also published as: CN112050686A

Abstract

A double-rocker auxiliary drive paging type target surface dynamic visible and hidden target belongs to the technical field of military training. The target surface turning speed in the prior art is slow; the target surface is integrated; the length and the width are large; belonging to a plane target. Although the invention still uses the hydraulic cylinder as the power source for unfolding and folding, the target surface is in a paging type, and two rocker linkage mechanisms which are symmetrically distributed are introduced, so that the target surface can be unfolded and folded rapidly and freely. Meanwhile, the conversion between the folding state and the extending state of the paged target surface is performed step by step in the unfolding and folding processes, and the wind resistance is small; the page-type target surface also reduces the width size after being folded on the premise of keeping the size of the target surface unchanged after being unfolded; the target surface can be stopped at any time in the state changing process, and flexible and various three-dimensional target surface forms with different folding angles are provided.

Description

Double-rocker auxiliary drive paging type target surface dynamic display hidden target

Technical Field

The invention relates to a double-rocker auxiliary driving paging type target surface dynamic display hidden target, and belongs to the technical field of military training.

Background

In modern military training and in weapons research tests, firearms need target practice tests, and in addition to conventional static target surface practice tests, dynamic shooting practice tests need to be carried out by using target surfaces with visible and invisible functions. The existing visible and invisible target is composed of a base and a target surface, the target surface is integrated, the length and width of the base are the same as those of the target surface, the bottom edge of the target surface is connected with the base in a hinge structure mode, and the target surface is directly driven by a hydraulic cylinder to realize the visible and invisible of the target surface. However, there are a number of technical problems with existing covert targets, including: the target surface is turned over at a low speed; the target surface is integrated, the target surface is integrally turned over or closed from 0 to 90 degrees, the wind resistance is large in the process, and the target surface is difficult to stably open and close in the case of strong wind; the length and width of the visible and invisible target are large, even when the target surfaces are closed, so that inconvenience is brought to transportation and installation; the integrated target surface is a flat plate, belongs to a plane target, has a rigid target shape, lacks flexibility, and cannot meet different actual requirements of gun weapon shooting training tests.

Disclosure of Invention

In order to solve the technical problems of the existing visible and invisible target, the invention provides a double-rocker auxiliary driving paging type target surface dynamic visible and invisible target. Although the invention still uses the hydraulic cylinder as the power source for unfolding and folding, the target surface is in a paging type, and two rocker linkage mechanisms which are symmetrically distributed are introduced, so that the target surface can be unfolded and folded rapidly and freely. Meanwhile, the conversion between the folding state and the extending state of the paged target surface is carried out step by step in the unfolding and folding processes, and the wind resistance is small; the page-type target surface also reduces the width size after being folded on the premise of keeping the size of the target surface unchanged after being unfolded; the target surface can be stopped at any time in the state changing process, and flexible and various three-dimensional target surface forms with different folding angles are provided.

The double-rocker auxiliary drive page-type target surface dynamic display and hiding target comprises a base and a target surface, and is characterized in that as shown in figures 1-3, the target surface comprises an upper target surface 1 and a lower target surface 2, and the lower edge of the upper target surface 1 is connected with the upper edge of the lower target surface 2 through a hinge; the two ends of the lower edge of the lower target surface 2 are hinged with the two ends of the rear side of the base 3; the cylinder body of the hydraulic cylinder 4 is fixed in the middle of the base 3 along the front-back direction of the base 3, the hydraulic rod faces forwards, and the front end of the hydraulic rod is hinged with one corner of the triangular connecting plate 5; two identical rocker linkage mechanisms are symmetrically distributed at the left part and the right part of the visible and invisible target base 3; in the rocker linkage mechanism, the active end of a rocker 6 is hinged with the other corner of a triangular connecting plate 5, a support 7 is fixed on a base 3, the rocker 6 is matched with a retaining block on the support 7 in a linear pair mode, the retaining block is matched with the support 7 in a revolute pair mode, the passive end of the rocker 6 is matched with a retaining block on a sliding block 8 in a linear pair mode, and the retaining block is matched with the sliding block 8 in a revolute pair mode; the sliding rail 9 is fixed at the edge of the base 3 along the front-back direction of the base 3, and extends outwards for a section to form an external extension section at the back side of the base 3, and the sliding block 8 is movably matched with the sliding rail 9; two ends of the push rod 10 are respectively hinged with the slide block 8 and the side edge of the lower target surface 2; one end of the positioning rod 11 is hinged with the side edge of the upper target surface 1, the other end of the positioning rod is hinged with the outer sliding block 12, and the outer sliding block 12 is movably matched with the outer extension section of the sliding rail 9.

The technical effect of the present invention will be described in the following through the process from hiding to showing of the double-rocker auxiliary driving page type target surface dynamic hidden target of the present invention. When the visible target is in a completely hidden state, the upper target surface 1 and the lower target surface 2 are completely folded on the base 3, the hydraulic rod of the hydraulic cylinder 4 is completely retracted, and the sliding block 8 and the outer sliding block 12 are both located at the front position. In the process of unfolding the visible and hidden targets, the hydraulic cylinder 4 works, the hydraulic rod pushes the driving end of the rocker 6 forwards through the triangular connecting plate 5, at the moment, the rocker 6 rotates by taking the retaining block on the support 7 as a shaft, the driven end of the rocker 6 synchronously pulls the sliding block 8 backwards, the sliding block 8 translates backwards on the sliding rail 9 and pushes the push rod 10, the push rod 10 pushes the lower target surface 2 to unfold upwards, the lower target surface 2 simultaneously pushes the upper target surface 1 upwards, and the upper target surface 1 unfolds along with the unfolding of the lower target surface 2 under the matching of the positioning rod 11 until the visible and hidden targets are completely displayed. If the visible and hidden target needs to be retracted, the hydraulic rod is retracted only by controlling the hydraulic cylinder 4, and the whole rocker linkage mechanism reversely acts until the visible and hidden target state is switched to be hidden. Whether the visible and invisible target is unfolded or folded, the operation can be suspended by controlling the hydraulic cylinder 4, the visible and invisible target is kept in a transition state, and the required target surface form is given.

Two same rocker linkage mechanisms which are symmetrically distributed are driven by one hydraulic cylinder 4, so that the unfolding and the folding of the visible and invisible targets are more balanced and stable. The support 7, the sliding block 8 and the respective holding blocks form a revolute pair, the two holding blocks respectively form a linear pair with the rocker 6, the installation requirement of the rocker 6 can be reduced, the rocking and the shifting are guaranteed to be smooth, and the unfolding and the folding of the visible and invisible target are more flexible and easier. In the embodiment of the invention, the support 7 is positioned close to the active end of the rocker 6, which has the effect of amplifying the amplitude of the rocking motion and accelerating the unfolding and folding of the target surface. The outer extension section of the sliding rail 9 is arranged, so that one end, hinged to the outer sliding block 12, of the positioning rod 11 can move and limit in a certain small stroke, the requirements for assembly manufacturing and assembly accuracy of the visible and invisible targets are reduced, after other parts of the visible and invisible targets are assembled, the length of the positioning rod 11 is determined and installed, on one hand, the upper target surface 1 and the lower target surface 2 are allowed to be completely folded when the visible and invisible targets are hidden, and on the other hand, the upper target surface 1 and the lower target surface 2 are allowed to completely extend when the visible and invisible targets are displayed.

Drawings

FIG. 1 is a perspective view of the overall structure of a dual-rocker auxiliary driving page-type target with dynamic hidden and revealed target. FIG. 2 is a mechanical schematic diagram of the overall structure of the double-rocker auxiliary driving paged target surface dynamic explicit-implicit target of the present invention, which is also taken as an abstract figure. FIG. 3 is an enlarged perspective view of the local structure of the double-rocker auxiliary-driven paged target surface dynamic hidden target of the present invention. FIG. 4 is an enlarged perspective view of the position of the outer sliding block in the double-rocker auxiliary driving page-type target surface dynamic hidden target of the present invention.

Detailed Description

The dual-rocker auxiliary driving page-type target surface dynamic invisible target of the present invention needs to be further defined as follows.

The base 3 is a metal member having a frame structure, and reduces the weight of the base while ensuring rigidity.

The support 7 is positioned in the middle between the active end and the passive end of the rocker 6, or is deviated to the active end, and the later scheme can amplify the shaking amplitude and accelerate the unfolding and folding of the target surface.

The slide rail 9 is a parallel double slide rail, and the smooth movement of the slide block 8 is ensured.

The hinged end of the positioning rod 11 and the outer sliding block 12 is L-shaped, and the end of the L-shaped part of the positioning rod 11 is hinged from the rear end face of the outer sliding block 12, as shown in FIG. 4, the effect is that the outer sliding block 12 can move outwards and inwards smoothly in the process of unfolding and folding the target surface.

Claims

1. A double-rocker auxiliary drive paging type target surface dynamic hidden target comprises a base and a target surface, and is characterized in that the target surface comprises an upper target surface (1) and a lower target surface (2), and the lower edge of the upper target surface (1) is connected with the upper edge of the lower target surface (2) through a hinge; the two ends of the lower edge of the lower target surface (2) are hinged with the two ends of the rear side of the base (3); the cylinder body of the hydraulic cylinder (4) is fixed in the middle of the base (3) along the front-back direction of the base (3), the hydraulic rod faces forwards, and the front end of the hydraulic rod is hinged with one corner of the triangular connecting plate (5); two same rocker linkage mechanisms are symmetrically distributed at the left part and the right part of the visible and invisible target base (3); in the rocker linkage mechanism, the driving end of a rocker (6) is hinged with the other corner of a triangular connecting plate (5), a support (7) is fixed on a base (3), the rocker (6) is matched with a retaining block on the support (7) in a linear pair mode, the retaining block is matched with the support (7) in a revolute pair mode, the driven end of the rocker (6) is matched with a retaining block on a sliding block (8) in a linear pair mode, and the retaining block is matched with the sliding block (8) in a revolute pair mode; the sliding rail (9) is fixed at the edge of the base (3) along the front-back direction of the base (3), and extends outwards for a section to form an external extension section at the back side of the base (3), and the sliding block (8) is movably matched with the sliding rail (9); two ends of the push rod (10) are respectively hinged with the slide block (8) and the side edge of the lower target surface (2); one end of the positioning rod (11) is hinged with the side edge of the upper target surface (1), the other end of the positioning rod is hinged with the outer sliding block (12), and the outer sliding block (12) is movably matched with the outer extension section of the sliding rail (9).

2. The double-rocker auxiliary driving paged target surface dynamic target according to claim 1, wherein the base (3) is a metal member having a frame structure.

3. The double-rocker auxiliary driving paging type target surface dynamic target of claim 1, wherein the support (7) is located at the middle position between the active end and the passive end of the rocker (6), or is biased to the active end.

4. The double-rocker auxiliary-drive paged target surface dynamic explicit-hidden target according to claim 1, characterized in that the slide rails (9) are parallel double slide rails.

5. The double-rocker auxiliary driving paging type target surface dynamic target for revealing and hiding according to claim 1, characterized in that the hinged end of the positioning rod (11) and the outer sliding block (12) is L-shaped, and the end of the L-shaped part of the positioning rod (11) is hinged from the rear end face of the outer sliding block (12).