CN218598017U

CN218598017U - Heavy shielding lifting door structure

Info

Publication number: CN218598017U
Application number: CN202222229504.3U
Authority: CN
Inventors: 王福深
Original assignee: Shanghai Senlin Special Type Steel Door Co ltd
Current assignee: Shanghai Senlin Special Type Steel Door Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-03-10
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a heavy-duty shielding lifting door structure, wherein a door frame is fixed at the outer side of a wall door opening, and a vertical track is arranged in the door frame for a door leaf to slide up and down; the left side and the right side of the door leaf are provided with guide wheels, the lower end face of the door leaf is provided with a safe contact edge, the bottom of the upper horizontal frame is provided with an anti-buffering door stop for limiting the lifting height of the door leaf, and a shielding auxiliary frame is arranged at the lap joint position of a door opening and the door leaf; a lifting system is arranged above the door leaf and consists of a power mechanism and a control system, the power mechanism comprises a driving motor, a transmission shaft, a bevel gear structure and a screw rod, the horizontal transmission shaft is fixedly connected with an output shaft of the driving motor, the bevel gear structure comprises two bevel gears which are meshed with each other, the first bevel gear is fixedly connected with the transmission shaft in a coaxial mode, the second bevel gear is matched with the ball screw in a threaded mode, and the bottom of the ball screw is connected with the door leaf through a bearing seat. The utility model discloses shielding, security performance are good, adopt bevel gear structure and cooperation lead screw simultaneously, and the shield door promotes more stably.

Description

Heavy shielding lifting door structure

Technical Field

The utility model relates to a nuclear power station infrastructure, concretely relates to heavy shielding lift gate structure.

Background

At present, the nation proposes in the aspect of nuclear power autonomy: the method realizes the autonomous design, autonomous manufacturing, autonomous construction and autonomous operation of the nuclear power station, comprehensively establishes the construction and operation management mode of international advanced level rail jointing, and forms a relatively complete autonomous nuclear power industrial system. In the previous project of the construction of the domestic nuclear power station, as the design and manufacturing technology of domestic nuclear power matching equipment is not mature enough, part of matched nuclear power station biological shielding doors need to be imported from abroad, the purchase period is long, the cost is high, and a lot of difficulties are brought to the maintenance and the repair work of special doors after the nuclear power station is put into operation. Therefore, domestic nuclear power construction enterprises need to research and develop the localization technology for designing and manufacturing the special-purpose door, and the autonomy requirement of the special-purpose door matching products of the domestic nuclear power station is met.

Most of the existing nuclear power plant biological shielding doors are flat-open type or translation type biological shielding doors or shielding lifting doors used at low frequency. The side-hung or translation type biological shielding door has absolute requirements on opening space, and the periphery of the side-hung or translation type biological shielding door needs to have a position larger than the width of a door leaf to ensure opening; current shielding lift gate is mostly the wire rope formula lift gate that the low frequency used. For the area that relative space is less, can not satisfy flat-open or translation opening position, especially handle factory building material conveying system, need high frequency operation requirement, current biological shield door is difficult to satisfy the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heavy shielding lifting door structure, which is provided with a lifting door frame and a door leaf, wherein the door frame is fixed outside a wall body door opening,

the door frame consists of side frames at two sides and an upper horizontal frame and a lower horizontal frame which are connected between the side frames, and vertical tracks are arranged in the side frames for the door leaf to slide up and down;

guide wheels in rolling fit with the vertical tracks are arranged on the left side and the right side of the door leaf, a safety contact edge is arranged on the lower end face of the door leaf, an anti-buffering door stop used for limiting the lifting height of the door leaf is arranged at the bottom of the upper horizontal frame, and a shielding auxiliary frame is arranged at the lap joint position of the door opening and the door leaf;

the lifting system is arranged above the door leaf and consists of a power mechanism and a control system, the power mechanism comprises a driving motor, a transmission shaft, a bevel gear structure and a screw rod, the driving motor is connected with the control system, the horizontal transmission shaft is fixedly connected with an output shaft of the driving motor, the bevel gear structure comprises two bevel gears which are meshed with each other, the first bevel gear is coaxially and fixedly connected with the transmission shaft, the second bevel gear is in threaded fit with the screw rod to form a ball screw rod mechanism, and the bottom of the screw rod is connected with the door leaf through a bearing seat.

Furthermore, the door frame is made by bending a 6mm middle plate.

Further, the lifting system is fixedly mounted on the upper horizontal frame.

Furthermore, the power mechanism comprises at least two groups of bevel gear structures.

Furthermore, sealing strips are arranged around the door opening and abut against the inner side of the falling door leaf.

Furthermore, a falling-proof bolt is arranged on the door opening.

Furthermore, each side vertical track is semicircular;

the left side and the right side of the door leaf are both provided with triangular strips, and both sides of the triangular strips are both provided with guide wheels which are matched with the semicircular vertical tracks in a rolling manner.

Furthermore, the door leaf is composed of a front steel plate and a rear steel plate.

The utility model has the advantages of:

1) The door frame is fixed on the outer side of a wall door opening, a track is arranged in the door frame and is used for the door leaf to slide up and down, the lifting system adopts an umbrella tooth structure form, and a screw rod adopts a ball type, so that long-time and high-frequency load operation is ensured;

2) The left side and the right side of the door leaf are provided with guide wheels to ensure that the door leaf slides stably; the lower part of the door leaf is provided with a safe contact edge, so that the safety performance of the lifting door is improved; an anti-buffering door stop is arranged at the position where the door leaf can be opened and closed; a shielding auxiliary frame is arranged at the lap joint position of the door opening and the door leaf, and the gap distance of the door is reduced to ensure the shielding effect; sealing strips are arranged around the door opening to ensure air tightness;

3) The door leaf is opened the position and installs the maintenance bolt, guarantees under the outage condition, and the door leaf is in the open position.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a front view of a heavy duty shielding lift gate structure of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a longitudinal sectional view of a heavy shield lift gate structure of the present invention.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In order to thoroughly understand the present invention, detailed steps and detailed structures will be set forth in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.

Referring to fig. 1, the utility model provides a heavy shielding lift gate structure, heavy shielding lift gate structure are equipped with lift gate door frame 1 and door leaf 2, and door frame 1 is fixed in the wall body door opening outside, adopts the 6mm medium plate to bend the preparation and form. The door frame 1 is composed of side frames 101 at both sides and upper and lower horizontal frames connected between the side frames 101, and vertical rails 5 are provided in the side frames 101 for the door leaf 2 to slide up and down.

The left side and the right side of the door leaf 2 are provided with guide wheels 6 matched with the vertical tracks 5 in a rolling mode, so that the door leaf 2 can ascend and descend more smoothly while the guide effect is achieved. Set up safe limit 7 that touches at door leaf lower extreme face 202, go up horizontal frame 102 bottom and be equipped with and be used for restricting the height-lifting of door leaf 2 and prevent buffering door shelves 8, because the weight of door leaf 2 is very big, therefore no matter fall to the end or rise to the top and all need have the safeguard measure: after the door leaf 2 completely falls down, the safety contact edge 7 plays a certain buffering role, and the sealing and safety performance of the lifting door is improved; after the door leaf 2 rises to the top, the buffering function is achieved by the anti-buffering door stop 8. The shielding auxiliary frame 9 is arranged at the lap joint position of the door opening and the door leaf, and the gap distance between the door openings is reduced to ensure the shielding effect. The door leaf 2 is composed of two thick steel plates 21 (as shown in fig. 4) in front and at back to meet higher shielding requirements.

A lifting system 3 is arranged above the door leaf 2, and the lifting system 3 is fixedly mounted on the upper horizontal frame 102. The lifting system 3 comprises a power mechanism and a control system 4, the power mechanism comprises a driving motor, a transmission shaft, an umbrella tooth structure 301 and a screw rod 302, the driving motor is connected with the control system 4, the horizontal transmission shaft is fixedly connected with an output shaft of the driving motor, the umbrella tooth structure 301 comprises two meshed umbrella gears, the first umbrella gear is coaxially and fixedly connected with the transmission shaft, the second umbrella gear is in threaded fit with the screw rod 302 to form a ball screw rod structure, and the bottom of the screw rod 302 is connected with the door leaf 2 through a bearing seat 303. The bearing pedestal 303 and the lead screw 302 are arranged in the center in the front-back direction of the door leaf 2, so that the stress is more uniform.

The principle that the lifting system 3 drives the door leaf 3 to lift is as follows: the control system 4 sends a starting signal to the driving motor, the driving motor drives the horizontal transmission shaft to synchronously rotate, the first bevel gear vertically fixed on the corresponding transmission shaft also starts to rotate, and the horizontal second bevel gear starts to rotate under the driving of the first bevel gear, so that the screw rod 302 rotates and moves up and down at the same time, and then the door leaf is driven to move up and down. The bottom of the screw rod 302 is provided with a convex ring arranged in a bearing seat 303, the bearing seat 303 is provided with a limiting step, the bearing seat 303 is used for connecting the screw rod 302 and the door leaf 2 in the vertical direction, and meanwhile, the screw rod 302 can rotate in the bearing seat 303.

Because the utility model belongs to the heavy shielding lift gate that the nuclear power station was used, its weight is very heavy, consequently for guaranteeing to promote door leaf 2 more stable, power unit includes at least two sets of bevel gear structures 301, and correspondingly, every group bevel gear structure 301 all disposes a lead screw 302, drives door leaf 2 through a plurality of lead screws 302 simultaneously and goes up and down for 2 lifts of door leaf are difficult for dropping simultaneously more stably.

The sealing strip 11 is arranged around the door opening, and after the door leaf 2 falls down, the sealing strip 11 is abutted against the inner side of the door leaf 2, so that the air tightness is ensured.

The door opening is provided with the anti-falling bolt 10 for maintenance, and when the maintenance needs to be carried out in a power-off mode, the anti-falling bolt 10 is inserted in place to manually pin the door leaf 2 to prevent the door leaf from falling after the door leaf is lifted.

As shown in fig. 3, each side vertical rail 5 is semicircular; all be equipped with three angular leaf in the left and right sides of door leaf 2, the both sides of three angular leaf all are equipped with 5 roll complex leading wheels 6 of semi-circular vertical track, and the atress is more even for 2 lifts of door leaf are more smooth.

The above description is that of the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A heavy shielding lifting door structure is provided with a lifting door frame (1) and a door leaf (2), the door frame (1) is fixed on the outer side of a wall door opening, and the heavy shielding lifting door structure is characterized in that,

the door frame (1) consists of side frames (101) at two sides and an upper horizontal frame and a lower horizontal frame which are connected between the side frames (101), wherein a vertical track (5) is arranged in each side frame (101);

guide wheels (6) in rolling fit with the vertical tracks (5) are arranged on the left side and the right side of the door leaf (2), a safety contact edge (7) is arranged on the lower end face (202) of the door leaf, an anti-buffering door stop (8) used for limiting the lifting height of the door leaf (2) is arranged at the bottom of the upper horizontal frame (102), and a shielding auxiliary frame (9) is arranged at the lap joint position of a door opening and the door leaf;

the lifting system (3) is arranged above the door leaf (2), the lifting system (3) is composed of a power mechanism and a control system (4), the power mechanism comprises a driving motor, a transmission shaft, an umbrella tooth structure (301) and a screw rod (302), the driving motor is connected with the control system (4), a horizontal transmission shaft is fixedly connected with an output shaft of the driving motor, the umbrella tooth structure (301) comprises two meshed bevel gears, the first bevel gear is coaxially and fixedly connected with the transmission shaft, the second bevel gear is in threaded fit with the screw rod (302) to form a ball screw rod mechanism, and the bottom of the screw rod (302) is connected with the door leaf (2) through a bearing seat (303).

2. A heavy duty shielding liftgate structure of claim 1, wherein the door frame (1) is made of 6mm middle plate bending.

3. A heavy duty shielding liftgate structure of claim 1, wherein the lifting system (3) is fixedly mounted on the upper horizontal frame (102).

4. A heavy duty shielding lift gate structure as claimed in claim 1, wherein the power mechanism comprises at least two sets of bevel gear structures (301).

5. A heavy duty shielded lift gate structure according to claim 4, characterized in that sealing strips (11) are installed around the gate opening, the sealing strips (11) abutting against the inner side of the dropped gate leaf (2).

6. A heavy duty shielded lift gate structure as claimed in claim 1, wherein a fall arrest latch (10) is provided at the gate opening.

7. A heavy duty shielding liftgate structure as claimed in claim 1, wherein each side vertical rail (5) is semicircular;

the left side and the right side of the door leaf (2) are both provided with triangular strips, and both sides of the triangular strips are both provided with guide wheels (6) which are matched with the semicircular vertical tracks (5) in a rolling way.

8. A heavy duty shielding lift gate structure as claimed in claim 1, wherein the screw (302) is provided at its bottom with a male ring mounted in a bearing housing (303).

9. A heavy duty shielded lift door structure according to claim 1, characterized in that said door leaf (2) is composed of two steel plates, front and rear.