Anti-drop connecting structure for sliding door leaf of railway vehicle

Abstract

The invention provides an anti-disengaging connecting structure for a sliding door leaf of a railway vehicle, and relates to the technical field of sliding doors, the anti-disengaging connecting structure comprises a transmission frame, an upper transmission shaft of the transmission frame is in sliding connection with a lead screw nut, a lower transmission shaft of the transmission frame is in sliding connection with a hinge seat, and the hinge seat is connected with a door carrying frame; a wedge-shaped block is fixedly arranged on the door carrying frame, a wedge-shaped groove is machined in the hinge base, and the wedge-shaped groove and the wedge-shaped block are embedded in a matched mode. According to the invention, the hinge seat and the door carrying frame are not separated; the wedge-shaped block structure can enable the hinge base to move in the vehicle width direction and the vehicle length direction due to the fact that the hinge base and the mechanism are provided with connecting points and cannot move in the vehicle height direction, and therefore under the condition that bolt connection fails, the hinge base and the door leaf cannot be separated through the wedge-shaped block structure. The driving force of the door mechanism can still be transmitted to the door leaf in the state that the bolt fails, so that the mechanism drives the door leaf to continue to do opening and closing movement, and opening and closing of the vehicle door are not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of sliding doors, and in particular to an anti-detachment connection structure for a sliding door leaf of a rail vehicle. Background Art

[0002] Rail vehicle sliding doors have become one of the mainstream forms of doors for vehicles with a speed rating of 80km / h due to their simple structure, high reliability, easy maintenance and low cost, and are widely used in rail vehicle projects in major cities.

[0003] The door leaf is installed on the door frame through the hinge seat. The hinge seat and the door frame are connected by screws and screw sleeves. The screws have torque requirements, and a series of anti-loosening measures such as thread locking glue are applied. However, if there is a human error in operation, such as the screws are not tightened or not tightened in place, and the thread locking glue is not applied, the screws may become loose due to vehicle vibration during vehicle use. After the screws become loose, the hinge seat and the door frame are separated, which is equivalent to the mechanism transmission part and the door leaf being separated, the transmission fails, and the door leaf cannot respond to the drive of the door mechanism, but is in a state of horizontal free movement, which will seriously affect the driving safety.

[0004] In order to solve this problem, the present application designs a mechanical secondary anti-slip structure for a door leaf. Summary of the invention

[0005] According to the above-mentioned connection form between the existing sliding door leaf and the mechanism, it is impossible to prevent the door leaf and the mechanism from being separated due to human factors, thereby affecting the driving safety, and an anti-detachment connection structure for the sliding door leaf of a rail vehicle is provided. The present invention mainly arranges a wedge-shaped groove and a wedge-shaped groove on the hinge seat and the door carrier respectively, and the wedge block makes it impossible for the hinge seat to move, so that the hinge seat and the door leaf will not be separated even when the bolt connection fails.

[0006] The technical means adopted by the present invention are as follows:

[0007] A anti-detachment connection structure for a sliding door leaf of a rail vehicle comprises a transmission frame, an upper transmission shaft of the transmission frame is slidably connected to a screw nut, a lower transmission shaft of the transmission frame is slidably connected to a hinge seat, and the hinge seat is connected to a door carrying frame; a wedge block is fixedly provided on the door carrying frame, a wedge groove is machined on the hinge seat, and the wedge groove and the wedge block are matched and embedded in each other.

[0008] Furthermore, the hinge seat is connected to the door carrying frame by bolts, and the driving force on the mechanism is transmitted to the door leaf through the transfer of the transmission frame and the hinge seat, so that the door leaf can be opened and closed.

[0009] Furthermore, the wedge block is an aluminum block, and three countersunk rivet holes are arranged below the wedge block. Rivets pass through the countersunk rivet holes respectively to fix the wedge block on the door carrying frame.

[0010] Furthermore, a first circular hole is provided above the wedge-shaped block, and a screw passes through the first circular hole to connect the hinge seat to the door carrying frame.

[0011] Furthermore, a wedge-shaped groove is provided on one side of the hinge seat connected to the door carrying frame, and three second round holes are also provided on the upper part of the hinge seat, and screws pass through the second round holes to connect the hinge seat to the door carrying frame.

[0012] Furthermore, three of the second circular holes are arranged in parallel, and the hinge seats above two of the second circular holes on both sides are cut so that the hinge seats can slide upward from under the wedge block.

[0013] Furthermore, the size of the wedge block is smaller than the size of the wedge groove.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The structure of the present invention can prevent the hinge seat and the door frame from being separated; the wedge block structure can prevent the hinge seat from moving in the vehicle width and length directions, and because the hinge seat has a connection point with the mechanism, it cannot move in the vehicle height direction. Therefore, in the event of failure of the bolt connection, the structure of the invention can prevent the hinge seat and the door leaf from being separated.

[0016] The structure of the invention can still transmit the driving force of the door mechanism to the door leaf even when the bolt fails, so that the mechanism drives the door leaf to continue opening and closing without affecting the opening and closing of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is the front view of the assembly of the anti-detachment connection structure in the present invention.

[0019] Figure 2 for Figure 1 Section view of the middle AA plane.

[0020] Figure 3 It is a top view of the assembly of the anti-detachment connection structure in the present invention.

[0021] Figure 4 It is the front view of the wedge block in the present invention.

[0022] Figure 5 It is the left view of the wedge block in the present invention.

[0023] Figure 6 It is a top view of the wedge block in the present invention.

[0024] Figure 7 It is the front view of the hinge seat in the present invention.

[0025] Figure 8 for Figure 7 Section view of the middle AA plane.

[0026] Fig. 9 It is a top view of the hinge seat in the present invention.

[0027] In the figure: 1, hinge seat; 11, wedge-shaped groove; 12, second circular hole; 2, door frame; 21, wedge-shaped block; 211, countersunk rivet hole; 212, first circular hole; 3, bolt. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] like Figure 1-9 As shown, the present invention provides an anti-detachment connection structure for a rail vehicle sliding door leaf, comprising a transmission frame, an upper transmission shaft of the transmission frame is slidably connected to a screw nut, a lower transmission shaft of the transmission frame is slidably connected to a hinge seat 1, and the hinge seat 1 is connected to a door carrying frame 2;

[0033] like Figure 3 As shown, a wedge-shaped block 21 is first fixed on the door frame 2;

[0034] like Figure 1 As shown, a wedge-shaped groove 11 is processed on the hinge seat 1, and the wedge-shaped groove 11 and the wedge-shaped block 21 are mutually matched and embedded, and three bolts 3 fasteners are used to connect the hinge seat 1 and the door carrier 2. Even if the bolts 3 are loose, the wedge-shaped block 21 can provide position limits for the hinge seat 1 in the vehicle length and width directions, and the transmission shaft can limit the hinge seat 1 in the vehicle height direction. Therefore, even if the bolts 3 are loose, the hinge seat 1 can be fixed in the original position and connected to the door carrier 2, and the driving force can continue to be transmitted to the door leaf.

[0035] like Figure 4-6 As shown, the wedge block 21 is an aluminum block, which can be fixed to the door frame 2 by rivets through three countersunk rivet holes 211 at the bottom, and a first round hole 212 is opened at the top to facilitate the screws of the hinge seat 1 to pass through and connect to the door frame 2.

[0036] like Figure 7-9 As shown, a wedge-shaped groove 11 is provided on the side where the hinge seat 1 contacts the door frame 2; three second round holes 12 are provided on the upper part of the hinge seat 1 to facilitate screws to pass through and connect to the door frame 2. The material above the left and right round holes is cut off to facilitate the hinge seat 1 to slide upward from under the wedge block 21.

[0037] The connection process between the wedge block 21 and the hinge seat 1:

[0038] The wedge block 21 is pre-fixed on the door carrying frame 2 with rivets. The size of the wedge block 21 is smaller than the wedge groove 11, so there is a gap of about 2 mm between the two. The hinge seat 1 slides upward from the bottom of the wedge block 21, and the wedge block 21 is inserted into the wedge groove 11. The two form a matching nesting relationship, and then the hinge seat 1 is connected and fixed to the door carrying frame 2 with bolts 3. The wedge block 21 fixed on the door carrying frame 2 and the wedge groove 11 are matched to provide a limit for the hinge seat 1. When the bolt 3 is loose, the hinge seat 1 remains in place and continues to transmit the driving force.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-detachment connection structure for a rail vehicle sliding door leaf, characterized in that: The invention comprises a transmission frame, wherein the upper transmission shaft of the transmission frame is slidably connected to a screw nut, and the lower transmission shaft of the transmission frame is slidably connected to a hinge seat (1), and the hinge seat (1) is connected to a door carrying frame (2); a wedge block (21) is fixedly arranged on the door carrying frame (2), and a wedge groove (11) is processed on the hinge seat (1), and the wedge groove (11) and the wedge block (21) are matched and embedded with each other.

2. The anti-detachment connection structure for a rail vehicle sliding door leaf according to claim 1, characterized in that: The hinge seat (1) is connected to the door carrying frame (2) via bolts (3), and the driving force on the mechanism is transmitted to the door leaf through the connection between the transmission frame and the hinge seat (1), so that the door leaf can be opened and closed.

3. The anti-detachment connection structure for a rail vehicle sliding door leaf according to claim 1, characterized in that: The wedge block (21) is an aluminum block. Three countersunk rivet holes (211) are arranged below the wedge block (21). Rivets pass through the countersunk rivet holes (211) to fix the wedge block (21) on the door carrying frame (2).

4. The anti-detachment connection structure for rail vehicle sliding door leaf according to claim 3, characterized in that: A first circular hole (212) is provided above the wedge-shaped block (21), and a screw passes through the first circular hole (212) to connect the hinge seat (1) to the door carrying frame (2).

5. The anti-detachment connection structure for rail vehicle sliding door leaf according to claim 1, characterized in that: A wedge-shaped groove (11) is provided on one side of the hinge seat (1) connected to the door carrying frame (2), and three second circular holes (12) are also provided on the upper part of the hinge seat (1). Screws pass through the second circular holes (12) to connect the hinge seat (1) to the door carrying frame (2).

6. The anti-detachment connection structure for rail vehicle sliding door leaf according to claim 5, characterized in that: The three second circular holes (12) are arranged in parallel, and the hinge seats (1) above the two second circular holes (12) on both sides are cut so that the hinge seats (1) can slide upward from under the wedge block (21).

7. The anti-detachment connection structure for rail vehicle sliding door leaf according to claim 1, characterized in that: The size of the wedge block (21) is smaller than the size of the wedge groove (11).

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