Inspection door device and railway vehicle

Abstract

The utility model discloses an inspection door device and a railway vehicle, and relates to the technical field of railway vehicles. The inspection door device comprises an inspection door, a first hinge and a second hinge. The first end of the first hinge is used for being installed on a bottom plate of the railway vehicle, the other end of the first hinge is provided with a clamping part and a blocking part, and the blocking part is located on the opening side of the clamping part. The first end of the second hinge is installed at the first end, in the length direction of the second hinge, of the inspection door, the other end of the second hinge is provided with a connecting part, and the connecting part can be inserted into a gap between the clamping part and the blocking part so that the connecting part can rotate around the width direction of the inspection door as the axis and can be clamped in the clamping part after rotating. The blocking part blocks the connecting part to limit the connecting part to be clamped in the clamping part, when the inspection door rotates to the inclined state with the non-zero included angle between the inspection door and the horizontal direction, the connecting part can slide out of the clamping part, and the inspection door device is low in disassembly and assembly difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection door devices, and more specifically, to an inspection door device. In addition, the utility model also relates to a rail vehicle including the above inspection door device. Background Art

[0002] Rail vehicles usually have inspection doors provided on the floor, so that technicians can easily access and inspect the key components of the vehicle, thereby ensuring the safe and reliable operation of the vehicle. Moreover, most of the publicly disclosed inspection doors at home and abroad are of slide type, push-pull type, and bolt-fixed type structures. However, the disassembly and assembly operations are cumbersome and do not meet the maintenance requirements of frequent disassembly and assembly.

[0003] In summary, how to reduce the difficulty of disassembly and assembly of the inspection door is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0004] In view of this, an object of the utility model is to provide an inspection door device with a lower disassembly and assembly difficulty.

[0005] Another object of the utility model is to provide a rail vehicle including the above inspection door device.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] An inspection door device includes:

[0008] An inspection door;

[0009] A first hinge, the first end of which is used to be installed on the floor of the rail vehicle, and the other end has a clamping portion and a blocking portion, and the blocking portion is located on the opening side of the clamping portion;

[0010] A second hinge, the first end of which is installed at the first end of the inspection door along its own length direction, and the other end has a connecting portion. The connecting portion can be inserted into the gap between the clamping portion and the blocking portion, so that the connecting portion can rotate around the width direction of the inspection door as an axis and can be clamped in the clamping portion after rotation. When the inspection door rotates to the horizontal state, the blocking portion blocks the connecting portion to limit the connecting portion from being clamped in the clamping portion. When the inspection door rotates to an inclined state with a non-zero angle with the horizontal direction, the connecting portion can slide out of the clamping portion.

[0011] Preferably, the first hinge includes a mounting portion and at least two supporting portions. A plurality of the supporting portions are installed side by side on the top of the mounting portion, and the free ends of the plurality of supporting portions all have the clamping portion and the blocking portion.

[0012] Preferably, the number of the first folding pages and the second folding pages is greater than or equal to two. A plurality of the second folding pages are arranged at intervals along the width direction of the inspection door, and the second folding pages cooperate with the corresponding first folding pages.

[0013] Preferably, it further includes an anti-detachment bolt assembly, and the anti-detachment bolt assembly includes a housing, a bolt, a retaining pin and a reset member;

[0014] The housing is installed on the inspection door. The bolt is slidably inserted into the sliding channel of the housing, and the head end of the bolt can slide out or retract into the interior of the housing to insert into or pull out from the bottom plate;

[0015] The first end of the reset member is connected to the housing, and the second end is connected to the tail end of the bolt to drive the head end of the bolt to extend out of the housing;

[0016] The retaining pin is fixed on the circumferential surface of the bolt. The housing has a positioning through hole. The retaining pin is slidably inserted into the positioning through hole. One end of the positioning through hole, the first hole section, extends along the length direction of the sliding channel, and the extension direction of the other end, the second hole section, has an acute angle with the extension direction of the first end hole section.

[0017] Preferably, it further includes a locking assembly. The first end of the locking assembly is installed on one of the bottom plate and the inspection door, and the second end is used to abut against or move away from the other of the bottom plate and the inspection door to lock or unlock the inspection door.

[0018] Preferably, the locking assembly includes a locking tongue and a rotating assembly. The locking tongue is rotatably arranged on the top of the bottom plate through the rotating assembly, and the locking tongue can be rotated to press on the top of the inspection door or move away from the inspection door.

[0019] Preferably, when in the inclined state, the included angle between the inspection door and the horizontal direction is 15 degrees.

[0020] Preferably, the blocking portion is located on the side of the clamping portion away from the inspection door.

[0021] Preferably, the periphery of the inspection door has a sealing strip to be hermetically matched with the bottom plate when the inspection door rotates to the horizontal state.

[0022] An orbital vehicle includes the inspection door device described in any one of the above.

[0023] The inspection door device provided by the present utility model has a second hinge installed at the first end of the inspection door along its own length direction, and the second hinge has a connecting portion. Correspondingly, a first hinge is installed on the bottom plate of the rail vehicle. The first hinge has a juxtaposed clamping portion and a blocking portion. The clamping portion is provided with a card slot, and there is a notch at the bottom of the side opposite to the blocking portion. The connecting portion can move in the gap between the clamping portion and the blocking portion to be inserted into the notch of the clamping portion, so as to be rotatably clamped into the clamping portion with the width direction of the inspection door as the axis.

[0024] When it is necessary to close the inspection door, insert the connecting portion into the gap between the guiding portion and the clamping portion, and then push the inspection door horizontally forward to clamp the connecting portion into the interior of the clamping portion. Then pull the inspection door to rotate it forward to the horizontal state to support on the bottom plate. When it is necessary to open the inspection door, first pull the inspection door to rotate it backward to the inclined state, and then push the inspection door horizontally backward to make the connecting portion slide out to the outside of the clamping portion. Then lift the inspection door to pull out the connecting portion from the gap between the clamping portion and the blocking portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0026] Figure 1 Schematic diagram of the horizontal state of the specific embodiment provided by the present utility model;

[0027] Figure 2 For Figure 1 Cross-sectional view;

[0028] Figure 3 Schematic diagram of the inclined state of the specific embodiment provided by the present utility model;

[0029] Figure 4 For Figure 3 Cross-sectional view;

[0030] Figure 5 Schematic diagram of the structure of the anti-disengagement plug provided by the specific embodiment of the present utility model;

[0031] Figure 6 Schematic diagram of the structure of the first hinge and the second hinge of the specific embodiment provided by the present utility model;

[0032] Figure 7 Top view of the locking assembly of the specific embodiment provided by the present utility model;

[0033] Figure 8 A cross-sectional view of the locking assembly of the specific embodiment provided by the present utility model.

[0034] Reference numerals:

[0035] 1 - inspection door; 2 - first hinge; 21 - mounting portion; 22 - supporting portion; 221 - clamping portion; 222 - blocking portion; 3 - second hinge; 31 - connecting portion; 4 - anti - detachment bolt assembly; 41 - housing; 411 - positioning through - hole; 4111 - first hole section; 4112 - second hole section; 42 - bolt; 43 - retaining pin; 5 - locking assembly; 51 - locking tongue; 52 - rotating assembly; 6 - sealing strip; 7 - bottom plate. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] The core of the present utility model is to provide an inspection door device with relatively low disassembly and assembly difficulty. Another core of the present utility model is to provide a rail vehicle including the above - mentioned inspection door device.

[0038] Please refer to Figure 1 , the present utility model provides an inspection door device, including an inspection door 1, a first hinge 2, and a second hinge 3. Among them, the first end of the first hinge 2 is used for mounting on the bottom plate 7 of the rail vehicle, and the other end has a clamping portion 221 and a blocking portion 222. The blocking portion 222 is located on the opening side of the clamping portion 221; the first end of the second hinge 3 is mounted on the first end of the inspection door 1 along its own length direction, and the other end has a connecting portion 31. The connecting portion 31 can be inserted into the gap between the clamping portion 221 and the blocking portion 222, so that the connecting portion 31 can rotate around the width direction of the inspection door 1 as an axis and can be clamped in the clamping portion 221 after rotation. When the inspection door 1 rotates to the horizontal state, the blocking portion 222 blocks the connecting portion 31 to limit the connecting portion 31 from being clamped in the clamping portion 221. When the inspection door 1 rotates to an inclined state with a non - zero angle with the horizontal direction, the connecting portion 31 can slide out of the clamping portion 221.

[0039] As Figures 1 to 4As shown, a second hinge 3 is installed at the right end of the inspection door 1 along its own length direction, and the upper end of the second hinge 3 has a connecting portion 31. Correspondingly, a first hinge 2 is installed on the bottom plate 7 of the rail vehicle. The upper end of the first hinge 2 is provided with a clamping portion 221 and a blocking portion 222 arranged side by side in the transverse direction. The clamping portion 221 is provided with a clamping groove of types such as rectangular or circular. And at the bottom right side opposite to the blocking portion 222 of the clamping portion 221, there is a notch. Then, under the restriction of the groove wall of the clamping portion 221, when the inspection door 1 is pushed horizontally, the connecting portion 31 cannot slide out of the clamping portion 221 by itself, and the connecting portion 31 can move in the gap between the clamping portion 221 and the blocking portion 222 to insert into the notch of the clamping portion 221, so as to be able to be rotationally clamped into the clamping portion 221 with the width direction of the inspection door 1 as the axis.

[0040] In some embodiments, the blocking portion 222 is located on the side of the clamping portion 221 away from the inspection door 1. As Figures 1 to 4 shown, the notch on the clamping portion 221 is located on its own right side surface, and the blocking portion 222 is located on the right side of the clamping portion 221. During use, the inspection door 1 moves in the left-side space of the clamping portion 221. And when the inspection door 1 needs to be disassembled, first push the inspection door 1 to rotate to an inclined state, and then apply a rightward thrust to the inspection door 1, so that the connecting portion 31 slides out of the clamping portion 221, and then apply an upward pulling force to the inspection door 1 to lift the connecting portion 31 out of the gap between the blocking portion 222 and the clamping portion 221.

[0041] In some embodiments, the blocking portion 222 is located on the side of the clamping portion 221 close to the inspection door 1. Refer to Figures 1 to 4 the shown orientation. The notch on the clamping portion 221 is located on its own left side surface, and the blocking portion 222 is located on the left side of the clamping portion 221. During use, the inspection door 1 moves in the left-side space of the clamping portion 221. And when the inspection door 1 needs to be disassembled, first push the inspection door 1 to rotate to an inclined state, and then apply a leftward thrust to the inspection door 1, so that the connecting portion 31 slides out of the clamping portion 221, and then apply an upward pulling force to the inspection door 1 to lift the connecting portion 31 out of the gap between the blocking portion 222 and the clamping portion 221.

[0042] It should be noted that the inspection door 1 provided on the rail vehicle is an existing mature technology and will not be elaborated here too much. It should also be noted that the types of the clamping portion 221 and the blocking portion 222 are not limited, as long as the above functions can be realized. For example, the clamping portion 221 can adopt an arched hook or a seat body with a clamping groove, etc., and the blocking portion 222 can adopt a linear rod or a rectangular seat body, etc. It should also be noted that the type of the second hinge 3 is not limited, as long as it can cooperate with the first hinge 2 to drive the inspection door 1 to rotate. For example, an L-shaped profile with a connecting portion 31 at the right end can be adopted, or an L-shaped rod with a threaded connection section at one end and a connecting portion 31 at the other end, etc.

[0043] When it is necessary to close the inspection door 1, insert the connecting portion 31 into the gap between the guiding portion and the clamping portion 221, and then pull the inspection door 1 forward to snap the connecting portion 31 into the inside of the clamping portion 221. Then pull the inspection door 1 to rotate it forward to the horizontal state to support on the bottom plate 7. When it is necessary to open the inspection door 1, first pull the inspection door 1 to rotate it backward to the inclined state, such as having an included angle of 15 degrees or 20 degrees or 30 degrees with the horizontal direction, etc., and then push the inspection door 1 backward so that the connecting portion 31 slides out to the outside of the clamping portion 221, and then lift the inspection door 1 to pull out the connecting portion 31 from the gap between the clamping portion 221 and the blocking portion 222.

[0044] Furthermore, the opening width between the top end of the blocking portion 222 and the top end of the clamping portion 221 is greater than the opening width between the bottom end of the blocking portion 222 and the bottom end of the clamping portion 221, so as to facilitate the insertion of the connecting portion 31 between the blocking portion 222 and the clamping portion 221.

[0045] On the basis of the above embodiments, the first folding page 2 includes a mounting portion 21 and at least two supporting portions 22. A plurality of supporting portions 22 are arranged side by side on the top of the mounting portion 21, and the free ends of the plurality of supporting portions 22 all have a clamping portion 221 and a blocking portion 222.

[0046] Such as Figure 1 、 Figure 3 and Figure 6 shown, in the first folding page 2, a plurality of flat or frame-shaped supporting portions 22 are all mounted on the top of the mounting portion 21, such as by welding or integrally forming, and the upper end of the supporting portion 22 has the above-mentioned clamping portion 221 and blocking portion 222. Such a setting is beneficial to reducing the self-weight of the inspection door device.

[0047] It should be noted that the type of the mounting portion 21 is not limited, as long as it can meet the above functions. For example, the mounting portion 21 can adopt a flat or frame-shaped structure, etc., and the mounting portion 21 can be mounted on the bottom plate by means of screws or welding, etc.

[0048] On the basis of the above embodiments, the number of the first folding pages 2 and the second folding pages 3 is greater than or equal to two. A plurality of second folding pages 3 are arranged at intervals along the width direction of the inspection door 1, and the second folding pages 3 cooperate with the corresponding first folding pages 2.

[0049] Such as Figure 1 and Figure 3As shown in the figure, several second hinges 3 are arranged along the width direction of the inspection door 1 on its right side. Correspondingly, when in use, several first hinges 2 are arranged on the bottom plate 7. After installing the inspection door 1 on the bottom plate 7, the connecting part 31 of the second hinge 3 is clamped and matched with the clamping part 221 of the corresponding first hinge 2, so that it can rotate around the width direction of the inspection door. Such a setting is beneficial to reducing the self-weight of the inspection door device while ensuring the stability of the rotation of the inspection door 1.

[0050] On the basis of the above-mentioned embodiment, it further includes an anti-disengagement bolt assembly 4. The anti-disengagement bolt assembly 4 includes a housing 41, a bolt 42, a retaining pin 43 and a resetting member; the housing 41 is installed on the inspection door 1, the bolt 42 is slidably inserted into the sliding channel of the housing 41, and the head end of the bolt 42 can slide out or retract into the interior of the housing 41 to insert into or pull out from the bottom plate 7; the first end of the resetting member is connected to the housing 41 and the second end is connected to the tail end of the bolt 42 to drive the head end of the bolt 42 to extend out of the housing 41; the retaining pin 43 is fixed on the peripheral surface of the bolt 42, the housing 41 has a positioning through hole 411, the retaining pin 43 is slidably inserted into the positioning through hole 411, one end of the positioning through hole 411, the first hole section 4111, extends along the length direction of the sliding channel, and the extending direction of the other end, the second hole section 4112, has an acute angle with the extending direction of the first end hole section.

[0051] An anti-disengagement bolt assembly 4 is installed on the inspection door 1 to lock the inspection door 1 on the bottom plate 7. Specifically, as Figure 5 shown, the housing 41 has a sliding channel penetrating through itself to insert the bolt 42. It should be noted that the type of the housing 41 is not limited, as long as it can meet the above functions. For example, the housing 41 can adopt an arched thin plate structure with feet, and the groove with an arched cross-section is the sliding channel. Or, the housing 41 can also adopt a seat body provided with a circular through hole, and this circular through hole is the sliding channel.

[0052] And a resetting member is arranged on the housing 41. One end of the resetting member is fixedly connected to the bolt 42 and the other end is fixedly connected to the housing 41. When in use, when the bolt 42 is pushed to the left to make its left end withdraw from the bottom plate 7, the resetting member generates a leftward thrust. After removing the thrust applied to the bolt 42, under the push of the resetting member, the bolt 42 can automatically extend out of the housing 41 to insert into the bottom plate 7.

[0053] It should be noted that the type of the resetting member is not limited, as long as it can achieve the above functions. For example, the resetting member can adopt a linear spring, and the linear spring is sleeved outside the bolt 42. Refer to Figure 5In the orientation shown, the left end of the linear spring is fixedly connected to the left end, and the right end is fixed to the housing 41. When in use, when the bolt 42 is pushed to the right, the linear spring is compressed and contracted. Then, the thrust applied to the bolt 42 is removed. Under the tension of the linear spring, the bolt 42 can be pushed to slide to the left and automatically extend to the outside of the housing 41. Or, the reset member includes two like-pole magnetic poles. Refer to Figure 5 In the orientation shown, one magnetic pole is fixedly installed on the right side of the housing 41, and the other magnetic pole is fixedly installed on the left end of the bolt 42. When in use, when the bolt 42 is pushed to the right, a repulsive force is generated between the two magnetic poles. Then, the thrust applied to the bolt 42 is removed. Under the repulsive force of the two magnetic poles, the bolt 42 can be pushed to slide to the left and automatically extend to the outside of the housing 41.

[0054] A positioning through hole 411 is provided on the housing 41. Correspondingly, a retaining pin 43 is installed on the bolt 42, and the retaining pin 43 is inserted into the positioning through hole 411. The right end first hole section 4111 of the positioning through hole 411 extends along the length direction of the sliding channel so that the retaining pin 43 can be pushed to move along the positioning through hole 411 to drive the bolt 42 to move along the sliding channel. The left end second hole section 4112 of the positioning through hole 411 has a non-zero angle with the length direction of the sliding channel, such as 90 degrees or 45 degrees, etc. When in use, after the bolt 42 is inserted into the bottom plate 7, the retaining pin 43 can be pushed to move along the left end of the positioning through hole 411 to lock the retaining pin 43, effectively preventing the bolt 42 from being unlocked invalidly.

[0055] On the basis of the above embodiments, a locking assembly 5 is further included. The first end of the locking assembly 5 is installed on one of the bottom plate 7 and the inspection door 1, and the second end is used to abut against or move away from the other of the bottom plate 7 and the inspection door 1 to lock or unlock the inspection door 1. In some embodiments, such as Figures 1 to 4 shown, the locking assembly 5 is fixedly installed on the bottom plate 7, and the other end can abut against or move away from the inspection door 1 to lock or unlock the inspection door 1 to the bottom plate 7. In other embodiments, the locking assembly 5 is fixedly installed on the inspection door 1, and the other end can abut against or move away from the bottom plate 7 to lock or unlock the inspection door 1 to the bottom plate 7.

[0056] It should be noted that the type of the locking assembly 5 is not limited as long as the above functions can be achieved. For example, the locking assembly 5 can include a base and a threaded rod. The base is installed on the inspection door 1, and the threaded rod is threadedly connected to the base. When in use, after the inspection door 1 is closed, the threaded rod is turned to threadedly connect its lower end to the bottom plate 7. On the contrary, when the inspection door 1 needs to be opened, the threaded rod is loosened to make its lower end move away from the bottom plate 7.

[0057] It should be noted that there is no limitation on the distribution method of the anti - detachment bolt 42 and the locking component 5, as long as the above - mentioned functions can be achieved. For example, in some embodiments, the anti - detachment bolts 42 are arranged on both sides of the inspection door 1 along its own width direction, and the locking component 5 is arranged at the second end of the inspection door 1 along its own length direction. Or, in other embodiments, the locking component 5 and the anti - detachment bolt 42 are both arranged at the second end of the inspection door 1 along its own length direction, etc.

[0058] Based on the above - mentioned embodiments, the locking component 5 includes a locking tongue 51 and a rotating component 52. The locking tongue 51 is rotatably arranged on the top of the bottom plate 7 through the rotating component 52, and the locking tongue 51 can be rotated to press against the top of the inspection door 1 or away from the inspection door 1.

[0059] As Figures 1 to 4 、 Figure 7 and Figure 8 shown, in the locking component 5, the rotating component 52 is installed on the top of the bottom plate 7, and the locking tongue 51 is rotatably arranged on the rotating component 52. When it is necessary to lock the inspection door 1, after closing the inspection door 1, the locking tongue 51 is toggled so that it abuts against the upper surface of the inspection door 1, thereby pressing the inspection door 1 on the bottom plate 7. On the contrary, when it is necessary to unlock the inspection door 1, the locking tongue 51 is toggled in the reverse direction so that it is away from the inspection door 1. With such a setting, the structure of the locking component 5 is simple and convenient to use.

[0060] It should be noted that there is no limitation on the type of the rotating component 52, as long as the requirement for the rotation of the locking tongue 51 can be met. For example, in some embodiments, the rotating component 52 can adopt a self - locking bolt, which is thread - connected to the top of the bottom plate 7, and the locking tongue 51 is sleeved on the outside of the rotating component 52. Or, in other embodiments, as Figure 8 shown, the locking component 5 includes a rotating component 52 which includes a second base, a positioning pin, a threaded rod, a spring and a nut member. The threaded rod is inserted into the second base, and the positioning pin is inserted radially along the threaded rod on the base and the threaded rod. The spring is clamped between the base and the end of the threaded rod located inside the base to apply a thrust along the length direction of the threaded rod. The locking tongue 51 is sleeved on the outside of the upper end of the threaded rod, and the nut member is thread - connected to the upper end of the threaded rod so that the locking tongue 51 is clamped between the threaded rod and the nut member.

[0061] It also should be noted that there is no limitation on the type of the locking tongue 51, as long as the above - mentioned functions can be achieved. For example, a straight - line rod body or a Z - shaped sheet body, etc.

[0062] Based on the above - mentioned embodiments, the periphery of the inspection door 1 is provided with a sealing strip 6 to be in sealing cooperation with the bottom plate 7 when the inspection door 1 rotates to the horizontal state.

[0063] As Figure 1 and Figure 3As shown, sealing strips 6 are provided around the inspection door 1. For example, the sealing strips 6 can be strip-shaped sealing strips 6 or annular sealing strips 6, etc., so as to be in sealing cooperation with the bottom plate 7 after the inspection door 1 is closed.

[0064] It should be noted that there is no limitation on the position of the sealing strip 6 on the inspection door 1, as long as it can be in sealing cooperation with the bottom plate 7. For example, in some embodiments, as Figure 1 and Figure 3 shown, the sealing strip 6 is arranged on the bottom surface of the inspection door 1. Correspondingly, the bottom plate 7 is provided with a stepped through hole, and the cross-sectional width of the upper hole section of the stepped through hole is greater than that of the lower hole section. The inspection door 1 can be embedded in the upper hole section of the stepped through hole. When the inspection door 1 is in a horizontal state, the sealing strip 6 is attached to the stepped surface in the stepped through hole to achieve sealing cooperation; or, in other embodiments, the sealing strip 6 is arranged on the peripheral surface of the inspection door 1. When the inspection door 1 is in a horizontal state, the sealing strip 6 is attached to the peripheral wall of the through hole opened on the upper surface of the bottom plate 7 to achieve sealing cooperation, etc.

[0065] In addition to the above inspection door device, the present utility model also provides a rail vehicle including the inspection door device disclosed in the above embodiments. For the structures of other parts of the rail vehicle, reference can be made to the prior art and will not be elaborated herein.

[0066] It should be noted that the relational terms such as "first" and "second" described above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the "upper surface, lower surface, top, bottom" and the orientation terms "up, down, left, right" described above are all defined based on the accompanying drawings of the specification.

[0067] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0068] The inspection door device and the rail vehicle provided by the present utility model have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

Claims

1. An inspection door device, characterized in that: include: Check Door (1); A first hinge (2), a first end of which is used to be mounted on a bottom plate (7) of a rail vehicle, and the other end of which has a clamping portion (221) and a blocking portion (222), wherein the blocking portion (222) is located on one side of an opening of the clamping portion (221); The second hinge (3) has a first end mounted on the first end of the inspection door (1) along its own length direction, and the other end has a connecting portion (31). The connecting portion (31) can be inserted into the gap between the clamping portion (221) and the blocking portion (222), so that the connecting portion (31) can rotate around the width direction of the inspection door (1) as an axis, and can be clamped in the clamping portion (221) after rotation. When the inspection door (1) is rotated to a horizontal state, the blocking portion (222) blocks the connecting portion (31) to limit the connecting portion (31) from being clamped in the clamping portion (221). When the inspection door (1) is rotated to an inclined state with a non-zero angle with the horizontal direction, the connecting portion (31) can slide out of the clamping portion (221).

2. The inspection door device according to claim 1, characterized in that: The first hinge (2) comprises a mounting portion (21) and at least two supporting portions (22), a plurality of the supporting portions (22) being mounted in parallel on the top of the mounting portion (21), and free ends of the plurality of the supporting portions (22) each having the clamping portion (221) and the blocking portion (222).

3. The inspection door device according to claim 2, characterized in that: The number of the first hinges (2) and the second hinges (3) is greater than or equal to two, a plurality of the second hinges (3) are arranged at intervals along the width direction of the inspection door (1), and the second hinges (3) cooperate with the corresponding first hinges (2).

4. The inspection door device according to claim 1, characterized in that: Also included is an anti-dropout latch assembly (4), the anti-dropout latch assembly (4) comprising a housing (41), a latch (42), a stop pin (43) and a reset member; The housing (41) is mounted on the inspection door (1), the latch (42) can be slidably inserted in a sliding channel of the housing (41), and the head end of the latch (42) can slide out or retract into the interior of the housing (41) to be inserted into or pulled out of the bottom plate (7); The first end of the reset element is connected to the housing (41), and the second end is connected to the tail end of the latch (42), so as to drive the head end of the latch (42) to extend out of the housing (41); The stop pin (43) is fixed to the circumferential surface of the latch pin (42); the housing (41) has a positioning through hole (411); the stop pin (43) is slidably inserted into the positioning through hole (411); a first hole section (4111) at one end of the positioning through hole (411) extends along the length direction of the sliding channel; and an extension direction of a second hole section (4112) at the other end forms an acute angle with an extension direction of the first end hole section.

5. The inspection door device according to claim 1, characterized in that: It also comprises a locking assembly (5), wherein a first end of the locking assembly (5) is mounted on one of the base plate (7) and the inspection door (1), and a second end is used to abut against or move away from the other of the base plate (7) and the inspection door (1) to lock or unlock the inspection door (1).

6. The inspection door device according to claim 5, characterized in that: The locking assembly (5) comprises a locking tongue (51) and a rotating assembly (52); the locking tongue (51) can be rotatably arranged on the top of the bottom plate (7) via the rotating assembly (52); the locking tongue (51) can be rotated to be pressed against the top of the inspection door (1) or to be away from the inspection door (1).

7. The inspection door device according to any one of claims 1 to 6, characterized in that: In the tilted state, the angle between the inspection door (1) and the horizontal direction is 15 degrees.

8. The inspection door device according to any one of claims 1 to 6, characterized in that: The blocking portion (222) is located on a side of the clamping portion (221) away from the inspection door (1).

9. The inspection door device according to any one of claims 1 to 6, characterized in that: The inspection door (1) is provided with sealing strips (6) around its periphery so as to seal with the bottom plate (7) when the inspection door (1) is rotated to a horizontal state.

10. A rail vehicle, characterized in that: The invention comprises the inspection door device as described in any one of claims 1 to 9 above.

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