Seat for railway vehicle cab

Abstract

The present invention relates to a seat for a cab of a railway vehicle, comprising: a seat plate comprising a hinged side and a free side for a person to sit on; the mounting seats are oppositely arranged at intervals, and the mounting seats are hinged to the hinged side of the chair plate, so that the chair plate can rotate between a folded state and a sitting state relative to the mounting seats; wherein in the folding state, the chair plate is in a vertical posture; in the sitting state, the chair plate is in a transverse posture. The seat is favorable for improving the working flexibility and comfort of a driver and a co-driver, thereby being favorable for improving the running reliability of the railway vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and particularly to a seat for a cab of a rail vehicle. Background Art

[0002] In recent years, the global rail transit industry has experienced remarkable development and changes, especially in terms of technological progress, infrastructure construction, and enhanced environmental awareness. However, with the development of the industry, more and more equipment needs to be installed in the cab, thus reducing the available space in the cab. People are seeking ways to provide sufficient movement and operation space for the driver and co-driver, so as to improve the flexibility and comfort of their work. This is conducive to enhancing the reliability of the operation of rail vehicles.

[0003] In addition, in the past decade, the Chinese rail transit industry has achieved remarkable achievements, not only forming a vast network in the country but also actively participating in international market competition. The international market is diverse, and there are huge climate differences around the world. To meet customer needs, different responses and designs need to be made according to different local conditions. Under low-temperature conditions, on the one hand, it is necessary to avoid safety hazards caused by seat damage, and on the other hand, it is necessary to ensure that the driver and co-driver do not feel obvious discomfort when sitting on the seat. Summary of the Invention

[0004] In view of the above problems, the present invention provides a seat for a cab of a rail vehicle, which can be used to solve at least one of the above problems.

[0005] According to the present invention, there is provided a seat for a cab of a rail vehicle, comprising: a seat board, the seat board including a hinged side and a free side, the free side being for a person to sit on; and a pair of mounting seats arranged relatively spaced apart, the mounting seats being hingedly connected to the hinged side of the seat board such that the seat board can rotate relative to the mounting seats between a folded state and a sitting state; wherein, in the folded state, the seat board is in a vertical posture; and in the sitting state, the seat board is in a horizontal posture.

[0006] Through the hinge between the seat board and the mounting seats, the folding of the seat is effectively realized, enabling it to be switched between the folded state and the sitting state. When not in use, the seat board is in a vertical folded state. At this time, more walking and operation space can be left in the cockpit. When the driver or co-driver needs to sit, by pressing the free side of the seat board, the seat board can be rotated to the sitting state. At this time, the driver or co-driver can sit stably on the seat. Through this design, while ensuring effective sitting, the flexibility and comfort of the work of the driver and co-driver can be improved, thereby ensuring stable vehicle operation.

[0007] In a preferred embodiment, the seat board includes a hollow frame and support beams extending within the frame. The frame includes: a pair of first frame members arranged in parallel and spaced apart, extending from the hinged side to the free side; and a pair of second frame members arranged in parallel and spaced apart, perpendicular to the first frame members and for connecting the pair of first frame members arranged in parallel and spaced apart at the hinged side and the free side.

[0008] In a preferred embodiment, the support beams extend between and are connected to the pair of first frame members arranged in parallel and spaced apart, and the support beams extend parallel to the second frame members.

[0009] In a preferred embodiment, the support beam includes a load-bearing support beam, which includes a first plate member and a second plate member arranged in parallel and relatively spaced apart, and the first plate member and the second plate member extend parallel to the plane of the seat board; the load-bearing support beam further includes a connecting plate extending perpendicular to the first plate member and the second plate member and connecting the first plate member and the second plate member together.

[0010] In a preferred embodiment, there is only one load-bearing support beam and only one connecting plate, and the ratio of the distance between the load-bearing support beam and the second frame member at the hinged side to the distance between the pair of second frame members is between 0.4 and 0.6.

[0011] In a preferred embodiment, the support beam further includes an auxiliary beam, and the auxiliary beam is close to the hinged side of the seat board; wherein, the seat further includes: a shaft rod extending between a pair of the mounting seats and fixedly connected to the mounting seats, the shaft rod extending parallel to the second frame member and being between the second frame member at the hinged side and the auxiliary beam; and a torsion spring sleeved on the shaft rod, one end of the torsion spring being fixedly connected to the shaft rod, and the other end extending parallel to the first frame member and abutting against the bottom side of the auxiliary beam; wherein, the other end of the torsion spring is fixedly connected to the auxiliary beam.

[0012] Wherein, in the folded state, the torsion spring is in an elastically tensioned state; in the sitting state, the torsion spring is further tensioned to provide a restoring force for the seat board to return to the folded state.

[0013] In a preferred embodiment, the seat board is made of carbon steel.

[0014] In a preferred embodiment, the seat board is made of Q355NL carbon steel.

[0015] In a preferred embodiment, the side surfaces of the second frame member on the hinged side, the support beam, the first frame member, and the second frame member on the free side are made of carbon steel; the top and bottom surfaces of the first frame member and the second frame member on the free side are made of aluminum alloy.

[0016] In a preferred embodiment, the side surfaces of the second frame member on the hinged side, the support beam, the first frame member, and the second frame member on the free side are made of Q355NL carbon steel; the top and bottom surfaces of the first frame member and the second frame member on the free side are made of 2024 or 5083 - H111 aluminum alloy.

[0017] In a preferred embodiment, the side surfaces of the first frame member and the second frame member on the free side are integrally formed.

[0018] In a preferred embodiment, a heat insulation sleeve is sleeved outside the seat plate. Description of the Drawings

[0019] The present invention will be described in more detail below with reference to the drawings. Among them:

[0020] Figure 1 Fig. shows a schematic structural view of a seat for a railway vehicle cab according to an embodiment of the present invention, showing the seat in a sitting state;

[0021] Figure 2 Shows Figure 1 Part of the structure of the seat in

[0022] Figure 3 Shows Figure 1 Part of the structure of the seat in

[0023] Figure 4 Shows Figure 1 The mounting plate of the seat in

[0024] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. Detailed Description of the Embodiment

[0025] The present invention will be further described below in conjunction with the drawings.

[0026] Figure 1 Schematically shows a seat 1 for a railway vehicle cab according to the present invention. The seat 1 includes a pair of mounting seats 10 arranged at relatively spaced intervals. The mounting seats 10 can be fixed to the wall of the cab or to any other suitable fixing structure by bolts, screws or any other appropriate means.

[0027] The seat 1 further includes a shaft rod 30. As Figure 3As shown, fixed heads 31 are formed at both ends of the shaft rod 30. The mounting seat 10 is formed with corresponding mounting holes 12 (see Figure 4 ). The fixed head 31 is formed as a square head, and the mounting hole 12 is correspondingly formed as a square hole. Thus, after the fixed heads 31 at both ends of the shaft rod 30 are inserted into the mounting holes 31, the shaft rod 30 is fixedly mounted on the mounting seat 10 and cannot rotate.

[0028] The seat 1 further includes a seat board 70. The seat board 70 includes a hinged side A and a free side F opposite thereto. The shaft rod 30 passes through the hinged side A of the seat board 40 to mount the seat board 40 on the mounting seat 10 and achieve a hinged mounting, so that the seat board 40 can rotate relative to the mounting seat 10 and the shaft rod 30 with the shaft rod 30 as an axis.

[0029] Here, the seat board 40 can rotate relative to the mounting seat 10 and the shaft rod 30 within a certain angle range, so that the seat 1 has a folded state and a sitting state. In the folded state, the seat board 70 is in a vertical posture, occupying as little lateral space as possible. When sitting is required, the driver or co-driver presses down the free side F of the seat board 70, so that the seat board 70 rotates relative to the mounting seat 10 and the shaft rod 30 to a lateral posture. At this time, the driver or co-driver can sit on the seat 1.

[0030] In this article, the "vertical posture" means that the extending direction of the seat board 70 is generally perpendicular to the ground of the rail vehicle. The "lateral posture" means that the extending direction of the seat board 70 is generally parallel to the ground of the rail vehicle. However,

[0031] As Figure 4 shown, in order to ensure that the selected angle of the seat board 70 can be restricted, a raised stop block 11 is formed on the mounting seat 10. The stop block 11 is formed with a first stop surface 111. The first stop surface 111 is generally perpendicular to the ground of the rail vehicle. The stop block 11 is also formed with a second stop surface 112. The second stop surface 112 is generally parallel to the ground of the rail vehicle. As Figure 1 shown, limit members 20 are installed on both sides of the seat board 70. The limit members 20 are fixed relative to the seat board 70 and sleeved on the shaft rod 30, so that the limit members 20 can rotate together with the seat board 70. When the seat 1 is in the folded state, the limit member 20 abuts against the first stop surface 111. When the seat 1 is in the sitting state, the limit member 20 abuts against the second stop surface 112. Thus, the rotation angle of the seat board 70 can be restricted to rotate within a fixed rotation range.

[0032] In addition, as Figure 1 and Figure 2As shown, the seat board 70 is configured with a hollow frame. Inside the frame and closely attached to the frame, a positioning sleeve 50 is sleeved on the shaft rod 30. Inside the positioning sleeve 50 and adjacent to the positioning sleeve 50, a positioning pin 60 is provided. The positioning pin 60 is inserted into the shaft rod 30 and extends out of the shaft rod 30 to abut against the positioning sleeve 50. Thus, the relative position between the seat board 70 and the shaft rod 30 can be fixed during the installation process, preventing the seat board 70 from slipping along the shaft rod 30. This is conducive to facilitating the installation. Additionally, when sitting on the seat 1, the seat board 70 can also be prevented from shaking.

[0033] As Figure 1 and Figure 2 shown, the frame of the seat board 70 includes a pair of first frame members 71, 72 that are parallel and spaced apart. The first frame members 71, 72 extend in the direction from the hinged side A to the free side F. The seat board 70 further includes a pair of second frame members 73, 74 that are parallel and spaced apart. The second frame member 73 connects the ends of the first frame members 71, 72 together at the hinged side A. The second frame member 74 connects the ends of the first frame members 71, 72 together at the free side F. This makes the frame of the seat board 70 generally configured in a rectangular shape. The connection between the first frame members 71, 72 and the second frame member 74 located at the free side F is configured with rounded corners. This is conducive to protecting the safety of the driver and co-driver in a narrow cab space.

[0034] Also as Figure 1 and Figure 2 shown, the seat board 70 further includes a support beam extending inside the frame. The support beam includes a load-bearing support beam 75. The load-bearing support beam 75 is mainly used to ensure the structural stability of the seat board 70, enabling the seat board 70 to maintain structural stability under greater pressure and impact. In this embodiment, the load-bearing support beam 75 is arranged parallel to the second frame members 73, 74 and connected to the first frame members 71, 72 (such as by welding or riveting, etc.). However, according to requirements, the load-bearing support beam 75 can also be arranged parallel to the first frame members 71, 72, or arranged obliquely.

[0035] The load-bearing support beam 75 includes a pair of first plate members 751 and a second plate member (not shown due to occlusion) that are parallel and relatively spaced apart. The first plate member 751 forms the top surface of the load-bearing support beam 75, and the second plate member forms the bottom surface of the load-bearing support beam 75. The load-bearing support beam 75 further includes a connecting plate 752 that extends perpendicular to the first plate member 751 and the second plate member and connects the first plate member 751 and the second plate member together (such as by welding or riveting, etc.). The connecting plate 752 is connected to the first plate member 751 and the second plate member, which can improve the structural strength of the load-bearing support beam 75, and thus improve the structural strength of the seat board 70. To reduce the weight of the seat board 70, only one connecting plate 752 can be provided. At this time, the cross-section of the load-bearing support beam 75 can be generally in a C shape or an "I" shape.

[0036] The support beam 75 further includes an auxiliary beam 76. The auxiliary beam 76 extends parallel to the second frame member 73 and is connected to the first frame members 71, 72. The auxiliary beam 76 is close to the hinged side A of the seat plate 70. As Figure 1 and Figure 2 shown, the auxiliary beam 76 is close to the second frame member 73 of the hinged side A and is spaced apart from the second frame member 73. The shaft rod 30 is arranged between the auxiliary beam 76 and the second frame member 73.

[0037] A torsion spring 40 is sleeved on the shaft rod 30. One end 41 of the torsion spring is fixedly connected (for example, welded) to the shaft rod 30, and the other end 42 extends to the bottom side of the auxiliary beam 76 and abuts against the bottom side of the auxiliary beam 76. In the folded state, the torsion spring 40 is in an elastic pre-tensioned state. When sitting is needed, the seat plate 70 is flipped, and the torsion spring 40 is further tensioned. When folding is needed again, the torsion spring 40 provides a restoring force for the flipping of the seat plate 70 to return it to the folded state.

[0038] The above-mentioned auxiliary beam 76 cooperates with the torsion spring 40 to assist the seat plate 70 to reset on the one hand, and can also help to provide structural stability for the seat plate 70 on the other hand. In order to reduce the weight of the seat plate 70, the auxiliary beam 76 can be constructed as a single plate member.

[0039] As Figure 3 shown, the other end 42 of the torsion spring 40 is connected to the auxiliary beam 76 of the seat plate by screws or fixing nuts 80. Thus, during the use of the seat 1, the torsion spring 40 will not move unexpectedly, and its other end 42 will not accidentally disengage from the auxiliary beam 76. On the one hand, this can ensure that the seat 1 can be effectively folded. On the other hand, this can also prevent the other end 42 of the torsion spring 40 from stabbing the driver or co-driver.

[0040] In addition, in Figure 4 the preferred embodiment shown, the first stop surface 111 is slightly inclined relative to the direction perpendicular to the ground. Thus, when the seat plate 70 rebounds to the folded state under the action of the torsion spring 40, there will be no violent impact between the stop block 11 and the limiting member 20. This is beneficial to ensuring the structural stability of the seat 1 and reducing the maintenance cycle and maintenance cost.

[0041] In Figure 1 and Figure 2In the illustrated embodiment, only one load-bearing support beam 75 and one auxiliary beam 76 are provided. The ratio of the distance L1 between the load-bearing support beam 75 and the second frame member 73 on the hinged side A to the distance L2 between a pair of second frame members 73, 74 is between 0.4 and 0.6. The ratio of the distance L3 between the auxiliary beam 76 and the second frame member 73 on the hinged side A to the distance L2 between a pair of second frame members 73, 74 is between 0.17 and 0.24. This arrangement can reduce the weight of the seat board 70 and improve the portability of the seat 1 while ensuring that the seat board 70 has sufficient structural stability as much as possible.

[0042] In one embodiment, the entire seat board 70 is made of carbon steel, preferably Q355NL carbon steel. This enables the seat 1 to withstand large load-bearing pressures and impacts and have a relatively small weight. Through experiments, the maximum stress response of the structure under various impact loads is 281.88 MPa, which does not exceed the yield strength of the material, 355 MPa, meeting the impact strength requirements.

[0043] In another embodiment, the top surface S1 and the bottom surface (not shown due to occlusion) of the first frame member 71 of the seat board 70, the top surface S3 and the bottom surface (not shown due to occlusion) of the first frame member 72, and the top surface S5 and the bottom surface (not shown due to occlusion) of the second frame member 74 on the free side F are made of aluminum alloy, preferably 2024 or 5083-H111 aluminum alloy. The side surfaces S2 of the first frame member 71, the side surfaces S4 of the first frame member 72, the side surfaces S6 of the second frame member 74 on the free side F, the second frame member 73 on the hinged side A, the auxiliary beam 76, and the load-bearing support beam 75 are made of carbon steel, preferably Q355NL carbon steel. The top surface S1 of the first frame member 71, the top surface S3 of the first frame member 72, and the top surface S5 of the second frame member 74 can be made of an aluminum alloy plate about 2 mm thick. The bottom surfaces of the first frame member 71, the first frame member 72, and the second frame member 74 can be made of an aluminum alloy plate about 1 mm thick. Additionally, the side surfaces S2, S4 of the first frame members 71, 72 and the side surfaces S6 of the second frame member 74 on the free side F are integrally formed. This can minimize the weight of the seat board 70 while ensuring that the seat 1 has sufficient structural stability. Through testing, the weight of the entire seat 1 can be as light as about 6.9 kg, which is at least about 70% lighter than existing seats. Through experiments, the maximum stress response of the structure under various impact loads is 41.53 MPa, which does not exceed the yield strength of the material, 125 MPa, meeting the impact strength requirements.

[0044] Through testing, the above-mentioned seat 1 can bear the impacts and loads brought by a driver or co-driver weighing about 120 kg sitting on the seat board 70.

[0045] Each component of the mounting base 10, the limiting member 20, the shaft rod 30, and the seat board 70 is processed by bending and milling processes, enabling mass production, low cost, and high efficiency.

[0046] The above-mentioned seat 1 can be folded, with convenient operation, effectively reducing the space occupancy rate of the seat 1 and solving the problem of space layout in narrow spaces in the cab. The structure of the seat 1 is stable and compact, making the seat 1 durable. In addition, the seat 1 is made of carbon steel and / or aluminum alloy, which can effectively resist high cold and ensure sufficient structural stability of the seat 1 in a low-temperature environment. Moreover, the structure and materials of the seat 1 make it as lightweight as possible. This is also very beneficial for the design and manufacture of rail vehicles. The seat 1 is particularly suitable for use as an attendant seat in the cab of a rail vehicle.

[0047] In addition, in order to improve the riding comfort and stability and enhance the aesthetics of the seat 1, a heat insulation cover (not shown) can also be sleeved outside the seat board 70. The heat insulation cover can be made of natural leather, artificial leather, fabric, or any other suitable material, or made by splicing multiple materials. The heat insulation cover can prevent the body temperature of the driver or co-driver sitting on the seat 1 from being quickly conducted to the seat board 70. This is very important for riding in cold conditions.

[0048] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0049] List of Reference Numerals

[0050] Seat 1

[0051] Mounting base 10

[0052] Stop block 11

[0053] First stop surface 111

[0054] Second stop surface 112

[0055] Mounting hole 12

[0056] Limiting member 20

[0057] Shaft rod 30

[0058] Fixed head 31

[0059] Torsion spring 40

[0060] One end 41 of the torsion spring

[0061] The other end 42 of the torsion spring

[0062] Positioning sleeve 50

[0063] Positioning pin 60

[0064] Seat plate 70

[0065] First frame members 71, 72

[0066] Second frame members 73, 74

[0067] Load-bearing support beam 75

[0068] First plate member 751

[0069] Connecting plate 752

[0070] Auxiliary beam 76

[0071] Fixing nut 80

[0072] Hinged side A

[0073] Free side F

[0074] Top surfaces S1, S3 of the first frame member

[0075] Side surfaces S2, S4 of the first frame member

[0076] Top surface S5 of the second frame member on the free side

[0077] Side surface S6 of the second frame member on the free side.

Claims

1. A seat for a rail vehicle cab, comprising: A seat board, the seat board includes a hinged side and a free side, and the free side is for people to sit on; And A pair of mounting seats arranged relatively spaced apart, the mounting seats are hingedly connected to the hinged side of the seat board, so that the seat board can rotate relative to the mounting seats between a folded state and a sitting state; Wherein, in the folded state, the seat board is in a vertical posture; In the sitting state, the seat board is in a transverse posture.

2. The seat for a cab of a rail vehicle according to claim 1, characterized in that, The seat board includes a hollow frame and support beams extending within the frame, and the frame includes: A pair of first frame members arranged parallel and spaced apart, the first frame members extend from the hinged side to the free side; and a pair of second frame members arranged parallel and spaced apart, the second frame members are perpendicular to the first frame members and are used to connect the pair of first frame members arranged parallel and spaced apart at the hinged side and the free side.

3. The seat for a cab of a rail vehicle according to claim 2, characterized in that, The support beams extend between the pair of first frame members arranged parallel and spaced apart and are connected to the pair of first frame members arranged parallel and spaced apart, and the support beams extend parallel to the second frame members.

4. The seat for a cab of a rail vehicle according to claim 3, characterized in that, The support beam includes a load-bearing support beam, the load-bearing support beam includes a first plate member and a second plate member arranged parallel and relatively spaced apart, and the first plate member and the second plate member extend parallel to the plane of the seat board; the load-bearing support beam further includes a connecting plate extending perpendicular to the first plate member and the second plate member and connecting the first plate member and the second plate member together.

5. The seat for a cab of a rail vehicle according to claim 4, characterized in that, There is only one load-bearing support beam and only one connecting plate. The ratio of the distance between the load-bearing support beam and the second frame member on the hinged side to the distance between the pair of second frame members is between 0.4 and 0.

6.

6. The seat for a cab of a rail vehicle according to any one of claims 3 to 5, characterized in that, The support beam further includes an auxiliary beam, and the auxiliary beam is close to the hinged side of the seat board; Wherein, the seat further includes: A shaft rod extending between the pair of mounting seats and fixedly connected to the mounting seats, the shaft rod extends parallel to the second frame member and is between the second frame member on the hinged side and the auxiliary beam; and A torsion spring, the torsion spring is sleeved on the shaft rod, one end of the torsion spring is fixedly connected to the shaft rod, and the other end extends parallel to the first frame member and abuts against the bottom side of the auxiliary beam; Wherein, the other end of the torsion spring is fixedly connected to the auxiliary beam. Wherein, in the folded state, the torsion spring is in an elastically tensioned state; In the sitting state, the torsion spring is further tensioned to provide a restoring force for the seat board to return to the folded state.

7. The seat for the cab of a rail vehicle according to any one of claims 3 to 6, characterized in that, The seat board is made of carbon steel, preferably made of Q355NL carbon steel.

8. The seat for a cab of a rail vehicle according to any one of claims 3 to 6, characterized in that, The side surfaces of the second frame member on the hinged side, the support beam, and the first frame member and the second frame member on the free side are made of carbon steel, preferably made of Q355NL carbon steel; The top and bottom surfaces of the first frame member and the second frame member on the free side are made of aluminum alloy, preferably made of 2024 or 5083-H111 aluminum alloy.

9. The seat for a cab of a rail vehicle according to any one of claims 3 to 8, characterized in that, The side surfaces of the first frame member and the side surfaces of the second frame member on the free side are integrally formed.

10. The seat for a cab of a rail vehicle according to any one of claims 1 to 9, characterized in that, A heat insulation sleeve is sleeved outside the seat board.

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