CN203232704U

CN203232704U - Fast removing device of protective cover

Info

Publication number: CN203232704U
Application number: CN2013201933365U
Authority: CN
Inventors: 唐振华; 刘超; 付志健; 周忆
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2013-10-09
Anticipated expiration: 2023-04-17

Abstract

The utility model discloses a fast removing device of a protective cover. The fast removing device is characterized in that: the fast removing device comprises a support frame, a servo motor, a worm and two worm wheels engaged with the worm; the servo motor and the worm are horizontally arranged on the support frame; an output terminal of the servo motor is connected with one end of the worm via a shaft coupler; the two worm wheels are symmetrically arranged on two sides of the worm, and each worm wheel is mounted on the support frame via an upright rotating shaft, and each rotating shaft is horizontally connected with a protective cover support; the servo motor is mounted on the left part of the support frame via a motor mounting base, and a base is mounted on the right part of the support frame; and the worm is mounted on the base via an end cover. The fast removing device of the protective cover is simple in structure, steady in driving, fast in transmission speed and high in transmission power, compact in structure and high in bearing capability, the protective cover can be quickly opened or removed before the shooting and no excessive vibration amplitude of the garget is ensured.

Description

The quick moving-out device of protective cover

Technical field

The utility model relates to the equipment that a kind of nuclear fusion uses, and is specifically related to the quick moving-out device of a kind of protective cover.

Background technology

As everyone knows, energy problem is a global big problem; The good news is that deuterium tritium raw material abundant on the earth can release energy by nuclear fusion, thereby addresses this problem.Nuclear fusion common two approach are arranged: magnetic confinement nuclear fusion and inertial confinement fusion, wherein more excellent with inertial confinement fusion especially.Inertial confinement fusion relies on laser beam heats DT target ball, because the inertia of particle was finished the thermonuclear fusion of appropriateness before seriously not dispersing as yet.The condition of having encircleed is put forward in the realization controlled thermonuclear fusion that develops into of laser technology, modern laser can produce and focus on the huge pulsed light beam of excellent energy, the high intense pulse laser of employing multichannel collects to be mapped to symmetrically makes it heating on the spherical DT target ball, surface ablation is high-temperature plasma, high velocity jet comes out to produce powerful recoil strength, extruding target core makes it the hurried rising of temperature and density and fusion takes place.

Because cryogenic target has higher initial fuel density and lower shock wave preheating sensitivity characteristics, thereby reduced the energy that the high-temperature high-density compression needs, freezing and non-cryogenic target under similarity condition is compared, and the neutron yield of cryogenic target thermonuclear fusion has tangible increase.Therefore, pellet is among the low temperature that will be placed on sealing before the target practice, hyperbaric environment, be in a kind of protective cover of low temperature, before after pellet is installed, realizing practicing shooting, be used for making up a such environment that satisfies above-mentioned requirements for pellet, after the filling of target, before practice shooting, all be by protective cover pellet and extraneous heat radiation environment to be isolated.When pellet was exposed in the normal temperature environment in vacuum storehouse, its life-span is 180ms only; And when removing the protective cover target practice, the vibration amplitude that requires pellet to produce can not be higher than 5 μ m, and in the whole target practice cycle, the thermal field changing value around the target can not be higher than 10mK.Because these requirements of antifreezing protection cover system, a kind of protective cover of needs mechanism, before realizing that after pellet is installed inertial confinement fusion (ICF) is practiced shooting, be used for making up a such environment that satisfies above-mentioned requirements for pellet, so that can satisfy the specific (special) requirements of the moment of practicing shooting: protective cover (in the 100ms) is opened or shifted out to the moment before target practice fast, and can guarantee that the vibration amplitude of target can not be excessive.

The shortcoming of prior art is: present existing device transient acceleration is big, produces bigger vibration in opening procedure, influences the stability of pellet and target practice, and to driver require high.

The utility model content

The purpose of this utility model is to provide a kind of can open or shift out protective cover the moment before target practice fast, and the quick moving-out device of protective cover that the vibration amplitude of assurance target can be not excessive.

For achieving the above object, the technical solution of the utility model is as follows: the quick moving-out device of a kind of protective cover, comprise bracing frame, servomotor, worm screw and two worm gears that are meshed with this worm screw, described servomotor and worm screw level are installed on the bracing frame, this servomotor output terminal is connected by shaft coupling with worm screw one end, two described worm gears are positioned at the worm screw both sides, and are installed on the bracing frame by vertical rotating shaft respectively, and level is connected with shielding support in the described rotating shaft.

Adopt said structure, rotation by servomotor control worm screw, the worm and gear stable drive and be convenient to control, worm gear and rotating shaft socket, fix by key and keyway, protective cover is divided into left and right sides two parts, all is fixedly connected with shielding support in two rotating shafts, when using this device, the shielding support on both sides is connected with protective cover respectively, servomotor drives worm screw by shaft coupling and rotates, and the worm gear drives rotating shaft is rotated, and shielding support and protective cover rotate thereupon, realize opening and closing up of protective cover, the positive and negative rotation of servomotor control worm screw can make protective cover separate fast, realizes practicing shooting before the pellet end-of-life, protective cover can be closed up slowly, transient acceleration can be not excessive in opening procedure in this mechanism, and the vibration that produces in the transmission process is little, has guaranteed the stability of pellet.

Described servomotor is installed on the bracing frame left part by motor mount, and the support frame as described above right part is equipped with pedestal, and described worm screw is installed on the pedestal by end cap, and two described worm wheel symmetrical are arranged at the worm screw both sides.

Described end cap can and vertically be installed on the pedestal for two, and the two ends of worm screw are installed in respectively on two end caps.

Described worm gear set is in the rotating shaft upper end, described pedestal is passed in described rotating shaft lower end, described rotating shaft upper and lower all is with bearing, the embedded upper and lower that is installed in described pedestal of this bearing, all be connected with a U-shaped shielding support in the described rotating shaft of each root, the free end of this shielding support is connected with the rotating shaft top and bottom respectively, the free-ended top of this shielding support is between the bearing on worm gear and rotating shaft top, the free-ended bottom of this shielding support is positioned at the below of the bearing of rotating shaft bottom, and the blind end of this shielding support is connected with protective cover.

Adopt said structure, rotating shaft by bearings on pedestal, bearing can be angular contact bearing, has axial bearing capacity preferably, and the upper and lower side of shielding support is all fixedlyed connected with rotating shaft, make connection more firm, when rotating shaft was rotated, shielding support and protective cover rotated more steady, and vibration amplitude is more little, this shielding support and protective cover can be formed in one, and the rotating shaft middle part can also sheathed sleeve.

The free end of described shielding support is socketed in the rotating shaft, and is connected with keyway by key.

Described rotating shaft two ends all have a ring annular groove, in this groove circlip are installed, and described circlip props up top and the free-ended bottom of shielding support of worm gear respectively.

By worm gear and the bearing in the vertical direction locking of circlip with socket in the rotating shaft, prevent its slip.

The upper and lower of described pedestal all has counterbore, and described bearing is installed in this counterbore, and the outer ring of described bearing leans against on the step of this counterbore.

Bearing is installed in the counterbore of ladder cellular type, and rotating shaft and bearing closely cooperate, and bearing outer wall and pedestal be fastenedly connected, and rotating shaft is supported on the step of counterbore by the outer ring of the bearing on its top, and the outer ring of the bearing of rotating shaft bottom leans against on the step of counterbore.

The beneficial effects of the utility model are: this apparatus structure is simple, stable drive, transmission speed and power extensively, compact conformation, have big load-bearing capacity, can the moment before target practice open or shift out protective cover fast, and guarantee that the vibration amplitude of target can be not excessive.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the vertical view of this Fig. 1;

Fig. 3 is that the A of this Fig. 1 is to view;

Fig. 4 is that the B of this Fig. 2 is to the zoomed-in view of view.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the quick moving-out device of a kind of protective cover, comprise bracing frame 1, servomotor 2, worm screw 3 and two worm gears 4 that are meshed with this worm screw 3, described servomotor 2 and worm screw 3 are horizontally disposed with, described servomotor 2 is installed on bracing frame 1 left part by motor mount 8, bracing frame 1 right part is equipped with pedestal 9, worm screw 3 is installed on the pedestal 9 by end cap 13, these servomotor 2 output terminals are connected by shaft coupling 5 with worm screw 3 one ends, two worm gears 4 are symmetricly set in the both sides of worm screw 3, and be installed on the pedestal 9 by vertical rotating shaft 6 respectively, described worm gear 4 is enclosed within rotating shaft 6 upper ends, pedestal 9 is passed in rotating shaft 6 lower ends, rotating shaft 6 upper and lowers all are with bearing 11, these bearing 11 embedded upper and lowers that are installed in pedestal 9, all be connected with a U-shaped shielding support 10 in each root rotating shaft 6, the free end of this shielding support 10 respectively with rotating shaft 6 top and bottom sockets, and be connected with keyway by key, these shielding support 10 free-ended tops are between the bearing 11 on worm gear 4 and rotating shaft 6 tops, these shielding support 10 free-ended bottoms are positioned at the below of the bearing 11 of rotating shaft 6 bottoms, and the blind end of this shielding support 10 is connected with protective cover 7.

Described rotating shaft 6 two ends all have a ring annular groove, circlip 12 is installed in this groove, described circlip 12 props up top and the shielding support 10 free-ended bottoms of worm gear 4 respectively, the upper and lower of described pedestal 9 all has counterbore, described bearing 11 is installed in this counterbore, and the outer ring of described bearing 11 leans against on the step of this counterbore.

Claims

1. quick moving-out device of protective cover, it is characterized in that: comprise bracing frame (1), servomotor (2), worm screw (3) and two worm gears (4) that are meshed with this worm screw (3), described servomotor (2) and worm screw (3) level are installed on the bracing frame (1), this servomotor (2) output terminal is connected by shaft coupling (5) with worm screw (3) one ends, two described worm gears (4) are positioned at worm screw (3) both sides, and be installed on the bracing frame (1) by vertical rotating shaft (6) respectively, described rotating shaft (6) is gone up level and is connected with shielding support (10).

2. the quick moving-out device of protective cover according to claim 1, it is characterized in that: described servomotor (2) is installed on bracing frame (1) left part by motor mount (8), support frame as described above (1) right part is equipped with pedestal (9), described worm screw (3) is installed on the pedestal (9) by end cap (13), and two described worm gears (4) are symmetricly set in worm screw (3) both sides.

3. the quick moving-out device of protective cover according to claim 2, it is characterized in that: described worm gear (4) is enclosed within rotating shaft (6) upper end, described pedestal (9) is passed in described rotating shaft (6) lower end, described rotating shaft (6) upper and lower all is with bearing (11), the embedded upper and lower that is installed in described pedestal (9) of this bearing (11), all be connected with a U-shaped shielding support (10) in the described rotating shaft of each root (6), the free end of this shielding support (10) is connected with rotating shaft (6) top and bottom respectively, the free-ended top of this shielding support (10) is positioned between the bearing (11) on worm gear (4) and rotating shaft (6) top, the free-ended bottom of this shielding support (10) is positioned at the below of the bearing (11) of rotating shaft (6) bottom, and the blind end of this shielding support (10) is connected with protective cover (7).

4. the quick moving-out device of protective cover according to claim 3, it is characterized in that: the free end of described shielding support (10) is socketed in the rotating shaft (6), and is connected with keyway by key.

5. the quick moving-out device of protective cover according to claim 4, it is characterized in that: described rotating shaft (6) two ends all have a ring annular groove, circlip (12) is installed in this groove, and described circlip (12) props up top and the free-ended bottom of shielding support (10) of worm gear (4) respectively.

6. the quick moving-out device of protective cover according to claim 5, it is characterized in that: the upper and lower of described pedestal (9) all has counterbore, and described bearing (11) is installed in this counterbore, and the outer ring of described bearing (11) leans against on the step of this counterbore.