WO2022021584A1

WO2022021584A1 - Rail vehicle and seat thereof

Info

Publication number: WO2022021584A1
Application number: PCT/CN2020/116309
Authority: WO
Inventors: 林琳; 王爱娇; 付志亮; 陈贺久; 魏圆良; 周强; 杨红娜; 顾玉霞; 石馨月; 时继华
Original assignee: 中车唐山机车车辆有限公司
Priority date: 2020-07-29
Filing date: 2020-09-18
Publication date: 2022-02-03
Also published as: CN111791908A; CN111791908B

Abstract

Disclosed is a seat, comprising a framework (11), supporting legs (12), a seat cushion (13) and a back cushion (14). The tops of the supporting legs are fixedly connected to the framework, the inside of the supporting legs are cavities, operation windows in communication with the cavities are provided in one side of the supporting legs, detachable supporting leg cover plates (121) are installed on the supporting legs and are configured for sealing the operation windows, installation through holes for bolts (7) to pass therethrough are provided in the bottoms of the supporting legs and the end of the framework away from the supporting legs, and the seat cushion and the back cushion are both elastically clamped onto the framework. The seat is simple to disassemble and assemble. Further disclosed is a rail vehicle.

Description

A rail vehicle and its seat

technical field

The present application relates to the technical field of seats, and in particular, to a rail vehicle and a seat thereof.

Background technique

The passenger seat is a necessary equipment on the rail vehicle. The seat is generally composed of a frame, a cushion and a cushion. The seat is installed on the vehicle body through the frame. The rear end of the seat cushion is inserted into the skeleton cavity through the self-contained plug-in, and the front end of the seat cushion is fixed to the skeleton through the self-contained threaded joints and screws and other fasteners. .

To sum up, since both the back cushion and the seat cushion need to be fixed and installed on the skeleton with screws or bolts, the existing seat needs to be disassembled and assembled every time the seat is replaced or repaired, which is time-consuming and labor-intensive.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a rail vehicle and a seat thereof, and the seat has the characteristics of simple disassembly and assembly, convenience and speed, and time and labor saving.

An embodiment of the first aspect of the present application provides a seat, the seat includes a frame, a leg, a seat cushion and a back cushion;

The top of the outrigger is fixedly connected to the frame for supporting the frame on the floor of the rail vehicle; the interior of the outrigger is a cavity, and one side of the leg is provided with an operation window that communicates with the cavity ; a detachable outrigger cover is installed on the outrigger, and the outrigger cover is used to close the operation window;

The bottom of the outrigger and the end of the frame away from the outrigger are provided with mounting through holes for piercing bolts;

Both the seat cushion and the back cushion are elastically clamped on the frame.

In some optional implementations, the frame includes a front-end steel pipe and a rear-end steel pipe for installing the seat cushion;

The seat cushion is provided with a seat cushion connector on the side facing the back cushion, and a seat cushion limit hook capable of elastic deformation is provided on the side away from the back cushion;

The seat cushion connector is inserted into the bottom of the rear-end steel pipe and abuts against the rear-end steel pipe;

The seat cushion limit hook is provided with a seat cushion clamping part facing the front end steel pipe, and is clamped and connected to the front end steel pipe through the seat cushion clamping part.

In some optional implementations, the seat cushion insert is provided with an arc-shaped plate abutting against the rear steel pipe.

In some optional implementations, the seat cushion limit hook includes a main hook and a secondary hook;

The seat cushion engaging portion of the main hook is a right-angle groove;

The seat cushion clamping part of the auxiliary clamping hook is an arc-shaped groove that matches the shape of the outer peripheral surface of the front-end steel pipe;

A right-angled plate corresponding to the position and shape of the right-angled groove is welded on the outer peripheral surface of the front-end steel pipe, and the right-angled plate is snap-fitted into the right-angled groove.

In some optional implementation manners, the seat cushion limit hook includes a main hook and two auxiliary hooks, and the main hook is located between the two auxiliary hooks.

In some optional implementations, the seat cushion limit hook is further provided with a force applying portion;

When an external force acts on the force-applying portion, the seat cushion limiting hook is elastically deformed, and the seat cushion clamping portion is separated from the front-end steel pipe.

In some optional implementations, a cushion hook is provided at the bottom of the side facing the frame, and a cushion plug is provided at the upper part of the side facing the frame;

The skeleton is provided with a one-to-one slot corresponding to the cushion connector;

The backrest plug connector is inserted and matched with the slot, and is in contact with the frame;

The cushion hook is provided with a cushion engagement portion, and the cushion engagement portion is clamped on the outer peripheral surface of the top of the rear-end steel pipe.

In some optional implementations, the cushion plug-in member is a bent plate-shaped member;

The backrest engaging portion is an arc-shaped groove that is shaped to fit with the outer peripheral surface of the top of the rear-end steel pipe.

In addition, according to the second aspect of the embodiments of the present application, a rail vehicle is also provided, and the rail vehicle includes a vehicle body, a floor, and any one of the seats provided by the above technical solutions;

The bottom of the leg of the seat is fixedly mounted on the floor by means of bolts, and one end of the frame away from the leg is fixedly mounted on the side wall of the vehicle body by means of bolts.

In some optional implementations, a fixing seat is welded on the side wall, and the cross section of the fixing seat is a C-shaped structure, forming a chute with an opening;

A T-shaped slider is accommodated in the chute of the fixed seat, and the protruding part of the T-shaped slider is located in the opening, which is used to confine the T-shaped slider in the fixed seat ;

The T-shaped slider is provided with a through hole for passing the bolt;

The threaded rod of the bolt passes through the through hole of the T-shaped slider, the inner wall plate fixedly installed on the side wall, and the installation through hole of the skeleton, and then is threadedly connected with the nut to fix one end of the skeleton. connected to the side wall.

In some optional implementations, both the upper side wall and the lower side wall of the fixing seat are provided with ventilation holes;

The interior wall panel is provided with a wall panel profile at the position where the bolt is passed;

An adjusting shim is arranged between the fixing seat and the wall panel profile.

In some optional implementation manners, a stepped reinforcing plate is fixedly installed on the floor opposite to the supporting leg by means of countersunk screws;

The floor is provided with a stepped hole in shape matching with the stepped reinforcing plate, and the diameter of the stepped hole facing the leg is smaller than the diameter of the stepped hole facing away from the supporting leg;

The stepped reinforcing plate is provided with threaded holes corresponding to the mounting through holes at the bottom of the legs;

After the threaded rod of the bolt passes through the gasket, the installation through hole of the outrigger, the rubber pad and the floor cloth in sequence, it is threadedly connected with the threaded hole on the stepped reinforcement plate for fixing the outrigger on the floor. the floor.

In some optional implementations, the stepped reinforcing plate is provided with a weight reduction hole, and the periphery adopts a rounded transition;

Adhesive is used for compensation between the stepped reinforcing plate and the floor.

In some optional implementations, the bottom of the leg is provided with a recess for accommodating the rubber pad, and the rubber pad is used to achieve sealing between the leg and the floor.

Using the rail vehicle and its seat provided in the embodiment of the present application has the following beneficial effects:

Both the seat cushion and the back cushion of the above-mentioned seat are fixedly installed on the frame of the seat by means of elastic snap connection. The seat cushion and the frame, and the assembly between the cushion and the frame can be completed by snapping, and there is no need to repeatedly disassemble and assemble fasteners such as screws or bolts. Therefore, the above seat has the characteristics of simple disassembly and assembly, convenient and fast, and time-saving and labor-saving. .

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a schematic structural diagram of a seat provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of the assembly structure between the seat and the side wall provided in FIG. 1;

3 is a schematic diagram of the assembly structure between the seat and the floor provided in FIG. 1;

FIG. 4 is a schematic view of the A-direction structure of the seat provided in FIG. 1 after omitting outriggers;

FIG. 5 is a schematic view of the B-direction structure of the seat provided in FIG. 1 after omitting outriggers;

Figure 6 is a side view of the backrest of the seat provided in Figure 1;

Fig. 7 is the F-direction structural schematic diagram of the cushion provided in Fig. 6;

Figure 8 is a bottom view of the cushion of the seat provided in Figure 1;

Fig. 9 is the cross-sectional structural schematic diagram of the seat cushion provided in Fig. 8 in the G-G direction;

FIG. 10 is a schematic cross-sectional view of the seat cushion provided in FIG. 8 in the H-H direction;

Fig. 11 is a partial enlarged structural schematic diagram of the seat provided in Fig. 4 in part C;

Fig. 12 is a partial enlarged structural schematic diagram of the seat provided in Fig. 5 in part D;

Fig. 13 is a partial enlarged structural schematic diagram of the seat provided in Fig. 5 in part E;

Figure 14 is a schematic diagram of the clamping structure between the main hook of the seat cushion and the front-end steel pipe of the skeleton;

FIG. 15 is a schematic diagram of the plug-in structure between the cushion plug connector of the back cushion and the socket of the frame.

Reference number:

1-seat; 2-floor; 3-side wall; 4-fixed seat; 5-T-shaped slider; 31-interior wall panel; 32-wall panel profile; 6-step-shaped reinforcing plate; 7-bolt; 8- Countersunk head screw; 9- Rubber pad; 11- Frame; 12- Outrigger; 13- Seat cushion; 14- Cushion; 111- Front steel pipe; 112- Rear steel pipe; 113- Slot; 121- Outrigger cover ; 131 - Cushion plug connector; 132 - Main hook; 133 - Secondary hook; 141 - Cushion hook; 142 - Cushion connector.

detailed description

In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and Not all embodiments are exhaustive. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

It should be noted that, in the embodiments of the present application, the longitudinal direction is the running direction of the rail vehicle, the lateral direction is the width direction of the rail vehicle, and the vertical direction is the height direction or vertical direction of the rail vehicle. In rail vehicles, the commonly used shock and vibration requirements for seat 1 in China and Europe are: the maximum shock acceleration that should be able to withstand in the longitudinal direction is 3g, the maximum shock acceleration that should be able to withstand in the lateral direction is 1g, and the maximum shock acceleration that should be able to withstand in the vertical direction is 1g. The maximum impact acceleration is 1.5g; while North America requires a larger impact acceleration for seat 1, the longitudinal requirement can withstand a maximum impact acceleration of 8g, the lateral requirement can withstand a maximum impact acceleration of 4g, and the vertical requirement can withstand a maximum impact acceleration of 4g . In order to meet the shock and vibration requirements of the seat 1 in North America, the seat 1 and the connection structure in the embodiment of the present application are developed.

Example 1

The embodiment of the present application provides a seat 1. As shown in the structure of FIG. 1, one end of the seat 1 close to the side wall 3 is a cantilever end and is fixedly connected to the side wall 3; the other end of the seat 1 is supported by a support The legs 12 are supported on the floor 2, and the seat 1 is fixedly installed in the compartment through the fixed connection between the outriggers 12 and the floor 2 and the fixed connection between the cantilever end and the side wall 3; as shown in Figures 1 and 3, The seat 1 includes a frame 11, outriggers 12, a seat cushion 13 and a back cushion 14; the tops of the outriggers 12 are fixedly connected to the frame 11 for supporting the frame 11 on the floor 2 of the rail vehicle; as shown in the structure of FIG. 3, The inside of the outrigger 12 is a cavity, and one side is provided with an operation window communicating with the cavity; a detachable outrigger cover 121 is installed on the outrigger 12, and the outrigger cover 121 is used to close the operation window; When the chair 1 is installed, the outrigger cover 121 can be removed first, and the tool can enter the outrigger 12 through the operation window, and the outrigger 12 can be installed on the floor 2;

The bottom of the outrigger 12 and the end of the frame 11 away from the outrigger 12 are provided with mounting through holes (not shown in the figure) for piercing the bolts 7; as shown in the structure of FIG. Through the installation through hole of the bolt 7, the bolt 7 passes through the installation through hole, and the bottom of the outrigger 12 is fixedly installed on the floor 2;

As shown in the structure shown in FIG. 4 and FIG. 5 , both the seat cushion 13 and the back cushion 14 are elastically clipped on the frame 11 .

The seat cushion 13 and the back cushion 14 of the seat 1 are both fixed and installed on the frame 11 of the seat 1 by elastic snap-fit installation. The seat 1 provided in the example can complete the assembly between the seat cushion 13 and the frame 11, and the back cushion 14 and the frame 11 only by snapping, without repeatedly disassembling and assembling fasteners such as screws or bolts 7. Therefore, the above seat 1 It has the characteristics of simple disassembly and assembly, convenient and fast, and time-saving and labor-saving.

In a specific embodiment, as shown in the structures of FIGS. 4 and 5 , the frame 11 includes a front-end steel pipe 111 and a rear-end steel pipe 112 for installing the seat cushion 13 ;

8, 9 and 10, the seat cushion 13 is provided with a seat cushion insert 131 on the side facing the back cushion 14, and is provided with an elastically deformable seat cushion limit hook on the side away from the back cushion 14; As shown in the structure of FIG. 8 , the seat cushion 13 is provided with two seat cushion inserts 131 , and the seat cushion 13 is provided with three seat cushion limit hooks;

The seat cushion connector 131 is inserted into the bottom of the rear steel pipe 112 and abuts against the rear end steel pipe 112; as shown in the structure of FIG. At the bottom of the end steel pipe 112, the seat cushion insert 131 abuts against the rear end steel pipe 112, so as to realize the limitation and fixation of the seat cushion 13 in the vertical direction;

The seat cushion limit hook is provided with a seat cushion clamping part facing the front steel pipe 111, and is connected to the front end steel pipe 111 through the seat cushion clamping part; , through the action of external force, the seat cushion limit hook is elastically deformed, and the seat cushion clamping part of the seat cushion limit hook and the front steel pipe 111 are connected together, and the seat cushion limit hook is clamped to the front steel pipe 111 After that, the external force disappears, and the seat cushion limit hook returns to its original shape, so as to be clamped on the front steel pipe 111 , to realize the vertical and longitudinal limit of the seat cushion 13 , and to fix the seat cushion 13 on the frame 11 .

As shown in the structure of FIG. 13 , the seat cushion insert 131 is provided with an arc-shaped plate abutting against the rear-end steel pipe 112 . The arc-shaped plate can increase the contact area with the rear-end steel pipe 112 Limiting in two directions is beneficial to improve the installation stability and firmness of the seat cushion 13 , and at the same time, the arc-shaped plate can also prevent stress concentration, which is beneficial to prolong the service life of the seat cushion insert 131 .

As shown in the structures shown in Figures 8, 12 and 14, the seat cushion limit hook includes a main hook 132 and a secondary hook 133; as shown in the structure of Figure 14, the seat cushion engaging portion of the main hook 132 is a right-angled groove; As shown in the structure of FIG. 12 , the seat cushion engaging portion of the auxiliary hook 133 is an arc-shaped groove that matches the shape of the outer peripheral surface of the front end steel pipe 111 ; the outer peripheral surface of the front end steel pipe 111 is welded with a right angle corresponding to the position and shape of the right angle groove The right-angle plate is snap-fitted into the right-angle groove. In the actual production and manufacturing process, the seat cushion limit hook may include a main hook 132 and two auxiliary hooks 133, and the main hook 132 is located between the two auxiliary hooks 133; however, the seat cushion limit hook does not It is limited to one main hook 132 and two auxiliary hooks 133, and can also be provided with one main hook 132 and one auxiliary hook 133, or two main hooks 132 and one auxiliary hook 133, or two main hooks hook 132 and two secondary hooks 133, or other combinations.

In order to facilitate the disassembly of the seat cushion 13, as shown in the structures shown in Fig. 12 and Fig. 14, the seat cushion limit hook is also provided with a force-applying portion, and the force-applying portion can be a hook-shaped end; when an external force acts on the force-applying portion, the seat cushion limit The snap hook is elastically deformed, and the seat cushion snap portion and the front end steel pipe 111 are separated.

When disassembling the seat 1, it is only necessary to exert an external force on the force application part to elastically deform the seat cushion limit hook, that is, elastically deform the main hook 132 and the auxiliary hook 133, and cause the main hook 132 and the auxiliary hook to elastically deform. The seat cushion 13 can be easily detached from the frame 11 when the hook 133 is separated from the front steel pipe 111 . Therefore, the above-mentioned clamping structure has the advantages of convenient, simple, fast and time-saving and labor-saving disassembly.

6, 7, 11 and 15, the cushion 14 is provided with a cushion hook 141 at the bottom of the side facing the frame 11, and a cushion insert 142 is provided at the upper part of the side facing the frame 11; As shown in the structure of FIG. 7 , two cushion hooks 141 are provided at the bottom of the side facing the frame 11 of the cushion 14 , and six cushion inserts 142 are distributed on the upper part of the cushion 14 ; only the structure shown in FIG. 15 is shown A schematic structural diagram of the assembly between one of the cushion inserts 142 and the slot 113 is shown, but the assembly structure between the other cushion inserts 142 and the slot 113 is the same as that shown in FIG. 15 ; the frame 11 is provided with a The back cushion inserts 142 correspond to the slots 113 one-to-one; the back cushion inserts 142 are inserted and matched with the slots 113, and are in contact with the frame 11, which is realized by the insert and match of the back cushion inserts 142 and the slots 113. The limit of the back cushion 14 in the longitudinal direction and the vertical direction; as shown in the structure of FIG. 11 and FIG. 13 , the back cushion hook 141 is provided with a back cushion clamping part, and the back cushion clamping part is clamped on the top outer peripheral surface of the rear steel pipe 112, FIG. 11 shows two assembled states of the cushion hook 141 , one is a schematic diagram of the structure when the cushion clamping part is clamped with the rear steel pipe 112 , and the other is that the cushion clamping part and the rear steel pipe 112 do not enter Schematic diagram of the structure in the snap state.

As shown in the structures shown in FIGS. 11 and 13 , the cushion insert 142 can be a bent plate-shaped part; the cushion snap part is an arc-shaped groove that matches the shape of the top outer peripheral surface of the rear steel pipe 112, and the arc-shaped groove can increase the The large contact area between the cushion hook 141 and the rear-end steel pipe 112 improves the reliability and stability of the connection between the cushion 14 and the rear-end steel pipe 112 .

Embodiment 2

The embodiment of the present application provides a rail vehicle, the rail vehicle includes a vehicle body, a floor 2 and any seat 1 provided in the above embodiments; as shown in the structure of FIG. 1 , the bottom of the legs 12 of the seat 1 are bolted 7 is fixedly mounted on the floor 2 , and one end of the frame 11 away from the outrigger 12 is fixed and mounted on the side wall 3 of the vehicle body by means of bolts 7 . As shown in the structure of Fig. 2, a fixed seat 4 is welded on the side wall 3, and the cross section of the fixed seat 4 is a C-shaped structure, forming a chute with an opening; Block 5, the raised part of the T-shaped slider 5 is located in the opening, which is used to limit the T-shaped slider 5 to the fixed seat 4; the T-shaped slider 5 is provided with a through hole for passing through the bolt 7; After passing through the through hole of the T-shaped slider 5 , the inner wall panel 31 fixedly installed on the side wall 3 and the installation through hole of the frame 11 in sequence, it is screwed with a nut to fix one end of the frame 11 to the side wall 3 .

Since the fixing seat 4 is located between the side wall 3 and the interior wall panel 31, and is hidden in the interior wall panel 31, in order to improve the air circulation of the air conditioning system, ventilation holes are provided on the upper side wall and the lower side wall of the fixing seat 4. ; By arranging ventilation holes on the upper and lower side walls of the fixed seat 4, the air passability of the air conditioning system can be increased, and the comfort in the cabin can be improved. The interior wall panel 31 is provided with a wall panel profile 32 at the position where the bolts 7 are inserted; an adjusting washer is provided between the fixing base 4 and the wall panel profile 32 .

As shown in Fig. 1 and Fig. 3, a stepped reinforcing plate 6 is fixedly installed on the floor 2 opposite to the outriggers 12 by means of countersunk screws 8; The hole diameter of the stepped hole facing the outrigger 12 is smaller than the diameter of the stepped hole away from the outrigger 12; the stepped reinforcing plate is provided with a threaded hole corresponding to the mounting through hole at the bottom of the outrigger 12; After passing through the gasket, the mounting through holes of the outriggers 12, the rubber pads 9 and the floor 2 cloth in turn, the screws are connected with the threaded holes on the stepped reinforcing plate 6 to fix the outriggers 12 on the floor 2. .

When the outriggers 12 are fixedly installed on the floor 2, a stepped reinforcing plate 6 is embedded in the floor 2. Because the stepped reinforcing plate 6 adopts a stepped structure, it can effectively avoid the insufficient strength of a single reinforcing block and the seat 1 Defects of poor crimping with other components; the stepped reinforcing plate 6 can be pre-installed on the floor 2 through a plurality of countersunk screws 8. In order to achieve the connection strength between the stepped reinforcing plate 6 and the floor 2, the floor 2 A stepped surface that matches the shape of the stepped reinforcing plate 6 is provided, and the contact area, connection strength and stability between the stepped reinforcing plate 6 and the floor 2 are increased through the stepped structure, so that the force of the floor 2 is more uniform. , which is beneficial to prevent the occurrence of deformation of the floor 2 .

A weight reduction hole can also be provided on the above-mentioned stepped reinforcing plate 6. By setting the weight reducing hole, the weight reduction design can be carried out under the condition of satisfying the design strength, which is beneficial to the lightening of the rail vehicle; in order to avoid the stepped reinforcing plate 6 The stress concentration at the contact position with the floor 2, the perimeter of the stepped reinforcing plate 6 adopts a rounded transition structure, which increases the design strength of the structure under the condition of avoiding the phenomenon of stress concentration; The shape reinforcing plate 6 and the floor 2 can also be bonded by adhesive glue, and compensated by the adhesive glue.

As shown in the structure of FIG. 3 , the bottom of the outriggers 12 is provided with a recess for accommodating the rubber pads 9 , and the rubber pads 9 are used to realize the sealing between the outriggers 12 and the floor 2 .

Since the elastic rubber pads 9 are hidden in the inner recesses of the legs 12 of the seat 1, the rubber pads 9 are compressed by the bottom surface of the recesses of the legs 12 of the seat 1, and the rubber pads 9 occur under the pressure of the legs 12. Compression deformation to achieve sealing around the outriggers 12; at the same time, the rubber pads 9 are hidden inside the outriggers 12, which greatly improves the aesthetics, and also avoids the impact of the mopping tools on the rubber pads 9 during the cleaning process of the rail vehicle. Abnormal damage.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "first", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the purpose of It is convenient to describe the application and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

In this application, unless otherwise expressly specified and limited, terms such as "installation" and "connection" should be understood in a broad sense; taking connection as an example, it can be directly connected, or indirectly connected through an intermediate medium, or two Connectivity within an element or interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

While a few alternative embodiments of the present application have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include alternative embodiments and all changes and modifications that fall within the scope of the present application.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

A seat is characterized in that it comprises a frame, outriggers, a seat cushion and a back cushion;

The top of the outrigger is fixedly connected to the frame for supporting the frame on the floor of the rail vehicle; the interior of the outrigger is a cavity, and one side of the leg is provided with an operation window that communicates with the cavity ; a detachable outrigger cover is installed on the outrigger, and the outrigger cover is used to close the operation window;

The bottom of the outrigger and the end of the frame away from the outrigger are provided with mounting through holes for piercing bolts;

Both the seat cushion and the back cushion are elastically clamped on the frame.
The seat of claim 1, wherein the frame comprises a front-end steel pipe and a rear-end steel pipe for mounting the seat cushion;

The seat cushion is provided with a seat cushion connector on the side facing the back cushion, and a seat cushion limit hook capable of elastic deformation is provided on the side away from the back cushion;

The seat cushion connector is inserted into the bottom of the rear-end steel pipe and abuts against the rear-end steel pipe;

The seat cushion limit hook is provided with a seat cushion clamping part facing the front end steel pipe, and is clamped and connected to the front end steel pipe through the seat cushion clamping part.
The seat according to claim 2, wherein the seat cushion insert is provided with an arc-shaped plate abutting against the rear steel pipe.
The seat according to claim 2, wherein the seat cushion limit hook comprises a main hook and a secondary hook;

The seat cushion engaging portion of the main hook is a right-angle groove;

The seat cushion clamping part of the auxiliary clamping hook is an arc-shaped groove that matches the shape of the outer peripheral surface of the front-end steel pipe;

A right-angled plate corresponding to the position and shape of the right-angled groove is welded on the outer peripheral surface of the front-end steel pipe, and the right-angled plate is snap-fitted into the right-angled groove.
The seat according to claim 4, wherein the seat cushion limit hook comprises a main hook and two auxiliary hooks, and the main hook is located between the two auxiliary hooks.
Seat according to claim 4, is characterized in that, described seat cushion limit hook is also provided with force-applying part;

When an external force acts on the force-applying portion, the seat cushion limiting hook is elastically deformed, and the seat cushion clamping portion is separated from the front-end steel pipe.
The seat according to claim 1, characterized in that, the backrest is provided with a backrest hook at the bottom of the side facing the frame, and a backrest plug connector is provided at the upper portion of the side facing the frame;

The skeleton is provided with a one-to-one slot corresponding to the cushion connector;

The backrest plug connector is inserted and matched with the slot, and is in contact with the frame;

The cushion hook is provided with a cushion engagement portion, and the cushion engagement portion is clamped on the outer peripheral surface of the top of the rear-end steel pipe.
The seat according to claim 7, characterized in that, the cushion insert is a bent plate-shaped part;

The backrest engaging portion is an arc-shaped groove that is shaped to fit with the outer peripheral surface of the top of the rear-end steel pipe.
A rail vehicle, comprising a vehicle body and a floor, characterized in that it comprises the seat according to any one of claims 1-8;

The bottom of the leg of the seat is fixedly mounted on the floor by means of bolts, and one end of the frame away from the leg is fixedly mounted on the side wall of the vehicle body by means of bolts.
The rail vehicle according to claim 9, wherein a fixing seat is welded on the side wall, and the cross section of the fixing seat is a C-shaped structure, forming a chute with an opening;

A T-shaped slider is accommodated in the chute of the fixed seat, and the protruding part of the T-shaped slider is located in the opening, which is used to confine the T-shaped slider in the fixed seat ;

The T-shaped slider is provided with a through hole for passing the bolt;

The threaded rod of the bolt passes through the through hole of the T-shaped slider, the inner wall plate fixedly installed on the side wall, and the installation through hole of the skeleton, and then is threadedly connected with the nut to fix one end of the skeleton. connected to the side wall.
The rail vehicle according to claim 10, wherein the upper side wall and the lower side wall of the fixing seat are provided with ventilation holes;

The interior wall panel is provided with a wall panel profile at the position where the bolt is passed;

An adjusting shim is arranged between the fixing seat and the wall panel profile.
The rail vehicle according to claim 9, characterized in that a stepped reinforcing plate is fixedly installed on the floor opposite to the outrigger by means of countersunk screws;

The floor is provided with a stepped hole that matches the shape of the stepped reinforcing plate, and the diameter of the stepped hole facing the leg is smaller than the diameter of the stepped hole facing away from the support leg;

The stepped reinforcing plate is provided with threaded holes corresponding to the mounting through holes at the bottom of the legs;

After the threaded rod of the bolt passes through the gasket, the mounting through hole of the outrigger, the rubber pad and the floor cloth in sequence, it is threadedly connected with the threaded hole on the stepped reinforcement plate for fixing the outrigger on the floor. the floor.
The rail vehicle according to claim 12, wherein the stepped reinforcing plate is provided with a weight-reducing hole, and the periphery adopts a rounded transition;

Adhesive is used for compensation between the stepped reinforcing plate and the floor.
The rail vehicle according to claim 12, wherein the bottom of the outrigger is provided with a recess for accommodating the rubber pad, and the rubber pad is used to achieve sealing between the outrigger and the floor.