A self-adjustable door wheel structure

Abstract

This invention relates to a self-adjustable door wheel structure, comprising a door wheel body (1) with one or more sliders (2) disposed on the outer circumferential surface of the door wheel body (1). In this self-adjustable door wheel structure, the door wheel body has one or more sliders disposed on its outer circumferential surface. When the door wheel rolls to the slider position, it contacts the track, allowing the slider to slide axially, thereby automatically correcting the deviation between the door wheel axle and the rotating shaft. This ensures smooth rolling of the door wheel on the arc-shaped track, while simultaneously reducing wear between the door wheel and the arc-shaped track, and improving the service life of components such as the door wheel, track, and bearings.

Description

Technical Field

[0001] This invention relates to a self-adjustable door wheel structure, belonging to the field of security door technology. Background Technology

[0002] A safety door is a type of door designed to withstand various shock waves or impacts from heavy objects. It is typically constructed from materials such as steel, concrete, and reinforced concrete. The threshold mechanism of a safety door is categorized into fixed thresholds, movable thresholds, and drop thresholds. Fixed thresholds are less expensive but inconvenient for personnel and vehicles to enter and exit. Movable thresholds can be installed when needed, providing both protection and sealing. However, existing safety doors with movable thresholds often suffer from issues where the threshold is easily lost or damaged when placed alone. Furthermore, the inconvenience of retrieving and installing movable thresholds during emergencies can lead to unnecessary accidents. Additionally, the function of movable thresholds in existing safety doors is mostly limited to sealing, neglecting the protection against shock waves or impacts from heavy objects.

[0003] Patent application number 202021353792.8 discloses a flip-top movable threshold impact-resistant protective door. It includes a wall with a doorway, a door leaf hinged to the wall, an arc-shaped track at the front of the doorway, and a pit at the rear. A flip-top movable threshold is installed in the pit. When the door is opened, the threshold flips down into the pit; when the door is closed, it flips up to abut the door. This flip-top movable threshold allows the door to remain unobstructed when open and its hinged position when closed, thus improving the door's impact resistance.

[0004] When the aforementioned protective door is working normally (opening or closing), the center of the door wheel axle of the door leaf bottom drive mechanism (including the drive motor and door wheel) points towards the center of the door leaf rotation mechanism (rotation shaft). The drive motor drives the door wheel to roll on the arc track, thereby causing the entire door leaf to rotate around the door leaf rotation mechanism (rotation shaft). However, in actual applications, due to a certain temperature difference between the inside and outside of the door leaf (especially in summer and winter), the door leaf will warp to a certain extent, resulting in a certain deviation between the center of the door wheel axle and the center of the door leaf rotation mechanism (rotation shaft). (Actual manufacturing errors and assembly errors can also cause this deviation to a certain extent.) The door wheel does not roll smoothly on the arc track, and axial relative sliding occurs between the door wheel and the arc track, which greatly increases the wear of the door wheel and the arc track and reduces the service life of the door wheel, track, bearings and other components. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a self-adjustable door wheel structure in light of the above-mentioned prior art. The door wheel body is provided with one or more sliders on its outer periphery. When the door wheel rolls to the slider position, the slider can slide axially, thereby automatically correcting the deviation between the door wheel axle and the rotating shaft. The door wheel rolls smoothly on the arc track, while reducing the wear between the door wheel and the arc track, and improving the service life of the door wheel, track, bearing and other components.

[0006] The technical solution adopted by the present invention to solve the above problems is: a self-adjustable door wheel structure, which includes a door wheel body, and one or more sliders are provided on the outer peripheral surface of the door wheel body.

[0007] Optionally, one or more door wheel grooves are formed on the outer peripheral surface of the door wheel body, and the slider is disposed in the door wheel groove.

[0008] Optionally, spring clips are provided on the left and right sides of the slider, and the slider is restricted between the upper parts of the two spring clips.

[0009] Optionally, a sliding roller groove is provided at the bottom of the gate wheel groove, and multiple sliding rollers 8 are arranged side by side in the sliding roller groove, with the bottom surface of the slider in contact with the sliding rollers.

[0010] Optionally, a lubricating material is provided between the slider and the gate wheel body.

[0011] Optionally, baffles are provided on the left and right sides of the slider, and springs are provided between the baffles on the left and right sides and the slider.

[0012] Optionally, the slider has a T-shaped cross-section, and the spring is constrained between the lower part of the slider and the baffle.

[0013] A self-adjustable door wheel structure includes a wheel frame, a bearing seat on the wheel frame, a rotating shaft mounted on the bearing seat, a door wheel body on the rotating shaft, and one or more sliders on the outer peripheral surface of the door wheel body.

[0014] Optionally, the door wheel body is provided with an upper self-resetting stop and a lower self-resetting stop on the left and right sides.

[0015] Optionally, a first funnel-shaped opening is formed between the two upper self-resetting blocks on the left and right, and a second funnel-shaped opening is formed between the two lower self-resetting blocks on the left and right.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] This invention discloses a self-adjustable door wheel structure, in which one or more sliders are provided on the outer periphery of the door wheel body. When the door wheel rolls to the slider position, the slider can slide axially, thereby automatically correcting the deviation between the door wheel axle and the rotating shaft. The door wheel rolls smoothly on the arc track, while reducing the wear between the door wheel and the arc track, and improving the service life of the door wheel, track, bearings and other components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a first embodiment of a self-adjustable door wheel structure according to the present invention.

[0019] Figure 2 for Figure 1 AA sectional view.

[0020] Figure 3 This is a schematic diagram of a second embodiment of the self-adjustable door wheel structure of the present invention.

[0021] Figure 4 for Figure 3 BB cross-sectional view.

[0022] Figure 5 This is a schematic diagram of a third embodiment of the self-adjustable door wheel structure of the present invention.

[0023] Figure 6 for Figure 5 CC section view.

[0024] Figure 7 This is a schematic diagram of a fourth embodiment of the self-adjustable door wheel structure of the present invention.

[0025] Figure 8 for Figure 7 The main view.

[0026] Figure 9 for Figure 8 Side view.

[0027] Figure 10 for Figure 8 A bottom view.

[0028] in:

[0029] Door wheel body 1

[0030] Slider 2

[0031] Door wheel groove 3

[0032] Spring clip 4

[0033] 5 connecting bolts

[0034] Portal wheel shaft hole 6

[0035] 7 Sliding roller groove

[0036] Sliding roller 8

[0037] baffle 9

[0038] Spring 10

[0039] Wheel frame 11

[0040] Bearing housing 12

[0041] Shaft 13

[0042] Upper self-returning stop 14

[0043] Lower self-returning stop 15

[0044] First opening 16

[0045] Second opening 17. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0047] Example 1:

[0048] See Figure 1 , Figure 2 The present invention relates to a self-adjustable door wheel structure, which includes a door wheel body 1, wherein one or more sliders 2 are provided on the outer peripheral surface of the door wheel body 1;

[0049] The outer circumferential surface of the door wheel body 1 is provided with one or more door wheel grooves 3, and the slider 2 is disposed in the door wheel groove 3;

[0050] When there are multiple sliders 2, the multiple sliders 2 are evenly distributed along the center of the gate wheel body 1;

[0051] The number of sliders 2 is preferably three or four;

[0052] Spring clips 4 are provided on the left and right sides of the slider 2;

[0053] The lower parts of the two left and right spring clips 4 are connected to the door wheel body 1 by connecting bolts 5;

[0054] The slider 2 is restricted between the door wheel groove 3 by the upper part of the two left and right spring clips 4, so that the slider 2 is flush with the door wheel groove 3;

[0055] The door wheel body 1 is made of metal, such as manganese forgings;

[0056] A lubricating material is provided between the slider 2 and the door wheel body 1, so that the sliding friction between the slider 2 and the door wheel body 1 is smaller than the sliding friction between the door wheel body 1 and the track. When the door wheel body 1 rotates to the position of the slider 2, the slider 2 can slide along the axis, thereby automatically adjusting and correcting the deviation between the door wheel and the door leaf shaft.

[0057] The gate wheel body 1 has a gate wheel shaft hole 6 at its center.

[0058] Example 2:

[0059] See Figure 3 , Figure 4 The difference between Embodiment 2 and Embodiment 1 is that: a sliding roller groove 7 is provided at the bottom of the door wheel groove 3, and multiple sliding rollers 8 are arranged side by side in the sliding roller groove 7, and the bottom surface of the slider 2 is in contact with the sliding rollers 8; by providing the sliding rollers 8 inside the slider 2, the sliding friction between the slider 2 and the door wheel body 1 is changed from sliding friction to rolling friction, which further reduces the friction between the slider 2 and the door wheel body 1 to be smaller than the sliding friction between the door wheel body 1 and the track component, thereby automatically adjusting and correcting the deviation between the door wheel and the door leaf pivot.

[0060] Example 3:

[0061] See Figure 5 , Figure 6 The difference between Embodiment 3 and Embodiment 1 is that: baffles 9 are provided on the left and right sides of the slider 2, and springs 10 are provided between the baffles 9 on the left and right sides and the slider 2;

[0062] The cross-section of the slider 2 is T-shaped;

[0063] The spring 10 is constrained between the lower part of the slider 2 and the baffle 9.

[0064] Example 4:

[0065] See Figures 7-10 The present invention relates to a self-adjustable door wheel structure, which includes a wheel frame 11, a bearing seat 12 provided on the wheel frame 11, a rotating shaft 13 passing through the bearing seat 12, a door wheel body 1 provided on the rotating shaft 13, and one or more sliders 2 provided on the outer peripheral surface of the door wheel body 1.

[0066] The outer circumferential surface of the door wheel body 1 is provided with one or more door wheel grooves 3, and the slider 2 is disposed in the door wheel groove 3;

[0067] When there are multiple sliders 2, the multiple sliders 2 are evenly distributed along the center of the gate wheel body 1;

[0068] The number of sliders 2 is preferably three or four;

[0069] The door wheel body 1 is provided with an upper self-returning block 14 and a lower self-returning block 15 on the left and right sides, and the two upper self-returning blocks 14 and the two lower self-returning blocks 15 are arranged symmetrically.

[0070] The lower self-returning stop 15 is located near the bottom of the door wheel body 1;

[0071] A funnel-shaped first opening 16 is formed between the two upper self-returning blocks 14 on the left and right sides;

[0072] A second, funnel-shaped opening 17 is formed between the two lower self-returning blocks 15 on the left and right sides;

[0073] The upper self-resetting stop 14 and the lower self-resetting stop 15 are disposed on the wheel frame 11 or the bearing seat 12.

[0074] A lubricating material is provided between the slider 2 and the door wheel body 1, so that the sliding friction between the slider 2 and the door wheel body 1 is smaller than the sliding friction between the door wheel body 1 and the track. When the door wheel body 1 rotates to the position of the slider 2, it can slide freely along the axis, thereby automatically adjusting and correcting the deviation between the door wheel and the door leaf shaft. The upper self-resetting stop and the lower self-resetting stop can automatically return the slider that has slid out of the groove to the door wheel groove.

[0075] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A self-adjustable door wheel structure, characterized in that: It includes a door wheel body (1), and one or more sliders (2) are provided on the outer peripheral surface of the door wheel body (1). The outer circumferential surface of the gate wheel body (1) is provided with one or more gate wheel grooves (3), and the slider (2) is disposed in the gate wheel groove (3); The slider (2) is provided with spring clips (4) on the left and right sides, and the slider (2) is restricted between the upper parts of the two spring clips (4); The bottom of the gate wheel groove (3) is provided with a sliding roller groove (7), and multiple sliding rollers (8) are arranged side by side in the sliding roller groove (7). The bottom surface of the slider (2) is in contact with the sliding rollers (8).

2. The self-adjustable door wheel structure according to claim 1, characterized in that: A lubricating material is provided between the slider (2) and the gate wheel body (1).

3. The self-adjustable door wheel structure according to claim 1, characterized in that: The slider (2) is provided with baffles (9) on the left and right sides, and springs (10) are provided between the baffles (9) on the left and right sides and the slider (2).

4. The self-adjustable door wheel structure according to claim 3, characterized in that: The slider (2) has a T-shaped cross section, and the spring (10) is restricted between the lower part of the slider (2) and the baffle (9).

5. The self-adjustable door wheel structure according to claim 1, characterized in that: It also includes a wheel frame (11), on which a bearing seat (12) is provided, a rotating shaft (13) is mounted on the bearing seat (12), and a door wheel body (1) is provided on the rotating shaft (13). The door wheel body (1) is provided with an upper self-returning stop (14) and a lower self-returning stop (15) on the left and right sides. The lower self-resetting stop (15) is located near the bottom of the door wheel body (1); The upper self-resetting stop (14) and the lower self-resetting stop (15) are disposed on the wheel frame (11) or the bearing seat (12).

6. The self-adjustable door wheel structure according to claim 5, characterized in that: A first horn-shaped opening (16) is formed between the two upper self-resetting blocks (14) on the left and right, and a second horn-shaped opening (17) is formed between the two lower self-resetting blocks (15) on the left and right.

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