A sliding door device

Abstract

The utility model relates to a sliding door device, including shield room and door board. The door hole has on the side wall of shield room. The ground before door hole has two guide rails. The support plate has on the guide rail, and the support plate is rectangle, and the lower surface of one pair of opposite sides is connected with the sliding block matched with the guide rail. The door board is perpendicular with the support plate, and the lower side is connected with the side of support plate adjacent to the door hole. The support plate has two rib plates on the upper surface, and the two rib plates are right triangle, and two straight edges of them are connected with the upper surface of support plate and the vertical edge of door board respectively. The power mechanism has between two rib plates, and the power mechanism is arranged vertically, and the output shaft faces downward and is in the activity state and passes out below the support plate and is connected with the gear. The ground on the side of gear is connected with the rack, and the longitudinal direction of rack is parallel with the guide rail, and it is engaged with gear. The door board of the utility model can be closed tightly with the door hole, and the leakage of the rays in the shield room can be avoided. It is suitable for the closing or opening of the shield room door board of the self-shield electron accelerator.

Description

Technical Field

[0001] This utility model relates to a sliding door. Specifically, it is a sliding door device used to open or close the door panel of a self-shielded electron accelerator shielding chamber. Background Technology

[0002] Currently, most sliding door devices used to open or close the shielding doors of self-shielded electron accelerators are chain-driven. This type of chain-driven sliding door device includes a shielding chamber with a doorway and door panel on its side wall. Two track grooves are located on the ground in front of the doorway, both perpendicular to the wall containing the doorway, spaced apart and parallel to each other. A base plate is located between the two track grooves, with axles attached to the underside of both the front and rear edges of the base plate. Rollers are fixed to both ends of each axle, and the rollers at the same end of the axles are placed in the corresponding track grooves in a rolling motion. A support plate is located on the base plate, and the lower edge of the door panel is connected to the support plate near the doorway, with the two perpendicular to each other. A power mechanism consisting of a motor and a reduction gear is connected to the side of the door panel away from the doorway via a pin seat. This power mechanism is horizontally arranged, and a first sprocket is fixed to its output shaft. A second sprocket is fixed to the axle corresponding to the first sprocket, and a drive chain connects the first and second sprockets. During operation, the output shaft of the power mechanism rotates, which in turn rotates through the first sprocket, the transmission chain, the second sprocket, and the axle, driving the support plate and the door panel to move back and forth together, thereby realizing the closing and opening actions between the door panel and the door opening.

[0003] The opening and closing of the door panel and the doorway is achieved through a chain drive. During closing, the upper section of the sprocket between the first and second sprockets is taut, while the lower section is slack. Conversely, during opening, the lower section of the sprocket is taut, while the upper section is slack. Therefore, a significant gap exists between the drive chain and the sprockets. This large gap causes the impact when the door panel contacts the doorway during closing, leading to the door panel moving backward and making it difficult to close tightly, resulting in radiation leakage within the shielded room. Utility Model Content

[0004] The problem this invention aims to solve is to provide a sliding door device. Using this device, the door panel and doorway can be tightly closed, preventing radiation leakage from the shielded room.

[0005] The above-mentioned problems to be solved by this utility model are achieved by the following technical solutions: This utility model discloses a sliding door device, comprising a shielded chamber and a door panel, wherein the shielded chamber has a door opening on its side wall. Two guide rails are located on the ground in front of the door opening, both perpendicular to the wall containing the door opening in the longitudinal direction, spaced apart and parallel to each other. A support plate, rectangular in shape, is mounted on the guide rails, with sliders cooperating with the guide rails attached to the underside of each pair of opposite sides. The door panel is perpendicular to the support plate, its lower side connected to the side of the support plate adjacent to the door opening. Two ribs, right-angled triangles, are mounted on the support plate, with their two straight sides connected to the top of the support plate and the vertical side of the door panel, respectively. The device is characterized by a power mechanism located between the two ribs, arranged vertically, with its output shaft pointing downwards and extending movably through the support plate, connected to a gear. A rack is attached to the ground on one side of the gear, its longitudinal direction parallel to the guide rails, and meshes with the gear.

[0006] The top, bottom, four walls and door panel of the shielding room 1 are all made of at least two layers of steel plates; the four sides of the door opening have a first step that is smaller on the inside and larger on the outside, and the steel plate of the door panel gradually increases in size from the side adjacent to the door opening to the outside, so as to form a second step that matches the first step.

[0007] A further improvement of this utility model is that there is a groove on the ground under the guide rail, and a first metal strip is pre-embedded at the bottom of the groove, and the guide rail is fixed on the first metal strip.

[0008] A further improvement of this utility model is that a second metal strip is fixed on the ground below the rack, and the rack is fixed on the second metal strip.

[0009] A further improvement of this invention is that the power mechanism includes a motor and a reducer, with the output shaft of the motor connected to the input shaft of the reducer. The gear is fixed on the output shaft of the reducer.

[0010] A further improvement of this utility model is that the motor is a variable frequency motor.

[0011] As can be seen from the above scheme, a power mechanism is installed between the two stiffeners. This mechanism is vertically arranged, with its output shaft pointing downwards and extending movably through the support plate, connected to a gear. A rack is connected to the ground on one side of the gear, its longitudinal direction parallel to the guide rail, and it meshes with the gear. During operation, the power mechanism rotates via the gear on its output shaft and moves back and forth along the rack, driving the support plate and door panel to move back and forth, thereby realizing the closing and opening actions between the door panel and the doorway. Compared with the chain drive method in the prior art, the door panel and doorway are easier to close tightly when closed, thus avoiding the leakage of radiation inside the shielded room. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the sliding door device structure of this utility model; Figure 2 yes Figure 1 A top-down view; Figure 3 yes Figure 1 View from direction A; Figure 4 yes Figure 3 A magnified diagram of point I in the diagram. Detailed Implementation

[0013] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sliding door device of this utility model includes a shielding chamber 1 and a door panel 3. A door opening 11 is machined into one side wall of the shielding chamber 1. Two guide rails 10 are fixed on the ground in front of the door opening 11. The longitudinal direction of each guide rail 10 is perpendicular to the wall containing the door opening 11, and they are spaced apart and parallel to each other. A support plate 7 is provided on the guide rail 10. The support plate 7 is a rectangular plate, and sliders 14 are connected to the lower ends of one pair of its short sides (i.e., the two side edges). The sliders 14 on the same side of the support plate 7 are slidably placed on the corresponding guide rail 10. The surface of the door panel 3 is perpendicular to the surface of the support plate 7, and its lower edge is connected to the side of the support plate 7 adjacent to the door opening 11. Ribs 6 are provided on the corresponding sides of the door panel 3 and the guide rails 10. The ribs 6 are right-angled triangular plates, and their two straight edges are fixed to the top of the support plate 7 and the outside of the door panel 3, respectively. A power mechanism is provided between the two stiffeners 6. The power mechanism is arranged vertically, with its output shaft pointing downwards and extending movably through the support plate 7, and a gear 9 is fixed thereon. A rack 2 is connected to the ground on one side of the gear 9. The longitudinal direction of the rack 2 is parallel to the guide rail 10, and it meshes with the gear 9.

[0014] The shielded room 1 is constructed of three layers of steel plates, including its top, bottom, four walls, and door panel 3. The door opening 11 has a first step on each of its four sides, with the inner side being smaller than the outer side. The steel plate of the door panel 3 gradually increases in size from the side adjacent to the door opening to the outer side, forming a second step that matches the first step. When the door is closed, the first step on each side of the door opening 11 and the second step of the door panel 3 are tightly joined together.

[0015] To facilitate the installation of the guide rail 10, a groove is machined on the ground below the guide rail 10, and a first metal strip 12 is pre-embedded at the bottom of the groove. The guide rail 10 is fixed on the first metal strip 12.

[0016] To facilitate fixing the rack 2, a second metal strip 15 is fixed on the ground below the rack 2, and the rack 2 is fixed on the second metal strip 15.

[0017] In this embodiment, the power mechanism includes a motor 4 and a reducer 5, with the output shaft of the motor 4 connected to the input shaft of the reducer 5. A shim 8 is fitted onto the section of the reducer 5's output shaft between its lower end and the support plate 7, and the gear 9 is fixed to the reducer 5's output shaft. The motor 4 is a variable frequency motor.

[0018] When the door needs to be closed, the motor 4 and the reducer 5, along with the gear 9 on the output shaft of the reducer 5, rotate clockwise together. This causes the gear 9 to move along the rack 2 toward the door opening 11, while simultaneously driving the support plate 7 and the door panel 3 connected to the support plate 7 to move toward the door opening 11, until the door panel 3 is aligned with the door opening 11, thus completing the closing action.

[0019] When the door needs to be opened, the motor 4 and the reducer 5, along with the gear 9 on the output shaft of the reducer 5, rotate counterclockwise. This causes the gear 9 to move along the rack 2 away from the door opening 11, while simultaneously moving the support plate 7 and the door panel 3 connected to the support plate 7 away from the door opening 11, until the door panel 3 is disengaged from the door opening 11, thus completing the door opening action.

Claims

1. A sliding door device, comprising a shielding chamber (1) and a door panel (3), wherein the shielding chamber (1) has a door opening (11) on its side wall; two guide rails (10) are on the ground in front of the door opening (11), the longitudinal direction of the guide rails (10) being perpendicular to the wall where the door opening (11) is located, and they are spaced apart and parallel to each other; a support plate (7) is on the guide rail (10), the support plate (7) being rectangular, and a slider (14) cooperating with the guide rail (10) is connected to the bottom of each pair of opposite sides; the door panel (3) is perpendicular to the support plate (7), and its lower side is connected to the side of the support plate (7) adjacent to the door opening (11); two stiffening plates (6) are on the support plate (7), the two stiffening plates (6) being right-angled triangles, and their two straight sides being respectively connected to the top of the support plate (7) and the vertical side of the door panel (3); characterized in that: There is a power mechanism between the two stiffeners (6). The power mechanism is arranged vertically, with its output shaft pointing downward and extending out under the support plate (7) and connected to a gear (9). A rack (2) is connected to the ground on one side of the gear (9). The longitudinal direction of the rack (2) is parallel to the guide rail (10), and it meshes with the gear (9).

2. The sliding door device according to claim 1, characterized in that: The top, bottom, four walls and door panel (3) of the shielding room (1) 1 are all made of at least two layers of steel plates; the door opening (11) has a first step with a smaller inner side and a larger outer side on all four sides, and the steel plate of the door (3) gradually increases in size from the side adjacent to the door opening (11) to the outside to form a second step that matches the first step.

3. The sliding door device according to claim 1, characterized in that: There is a groove on the ground under the guide rail, and a first metal strip (12) is pre-embedded at the bottom of the groove. The guide rail (10) is fixed on the first metal strip (12).

4. The sliding door device according to claim 1, characterized in that: A second metal strip (15) is fixed on the ground below the rack (2), and the rack (2) is fixed on the second metal strip (15).

5. The sliding door device according to any one of claims 1 to 4, characterized in that: The power mechanism includes a motor (4) and a reducer (5), with the output shaft of the motor (4) connected to the input shaft of the reducer (5); the gear (9) is fixed on the output shaft of the reducer (5).

6. The sliding door device according to claim 5, characterized in that: The motor (4) is a variable frequency motor.

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