Door clearance compensator and rail vehicle

Abstract

The present invention relates to the field of gap compensation for rail vehicles, and provides a door gap compensator and a rail vehicle. The door gap compensator comprises a floor body, which is configured to be fixedly embedded in a mounting notch reserved in the floor of a vehicle door area; a pedal body, which is slidably connected to the bottom surface of the floor body; and a driving mechanism, which is configured to drive the pedal body to extend and retract horizontally along the floor body. The present invention can solve the problems that the existing gap compensators are all designed as an integral part of the vehicle's door system, making it impossible to achieve separate control of the door gap compensators, and the existing pneumatic door gap compensators adopt a flip structure, which occupies a large space, has a complex structure, and has low reliability.

Description

Technical Field

[0001] The invention relates to the technical field of rail vehicle gap compensation, and in particular to a door gap compensator and a rail vehicle. Background Art

[0002] As the name suggests, the door gap compensator is used to compensate for the gap between the door and the platform. After the vehicle stops, the pedal of the door gap compensator extends toward the platform to facilitate passengers getting on and off the vehicle; when the vehicle departs, the pedal of the door gap compensator retracts away from the platform so as not to affect the normal driving of the vehicle.

[0003] However, the existing door clearance compensators have the following disadvantages: (1) they are all designed as an integral part of the vehicle door system, and it is impossible to achieve separate control of the door clearance compensators;

[0004] (2) The existing pneumatic door clearance compensator adopts a flip structure, which occupies a large space, has a complex structure and low reliability;

[0005] (3) The existing structure cannot achieve the control of the telescopic force and stroke of the push cylinder;

[0006] (4) The existing structure has a large gap between the floor and the pedals, which cannot meet the requirements of free boarding and disembarking of special equipment such as wheelchairs, and the gap between the floor and the pedals cannot be adjusted. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a door clearance compensator, which solves the problems that the existing clearance compensators are all designed as an integral part of the vehicle door system, and the door clearance compensator cannot be controlled separately, and the existing pneumatic door clearance compensators adopt a flip structure, occupy a large space, have a complex structure, and have low reliability.

[0008] The present invention also provides a rail vehicle.

[0009] A door clearance compensator according to an embodiment of the present invention includes:

[0010] The floor body is configured to be fixedly embedded in a mounting notch reserved in the floor of the vehicle door area;

[0011] A pedal body slidably connected to the bottom surface of the floor body;

[0012] The driving mechanism is configured to drive the pedal body to extend and retract horizontally along the floor body.

[0013] According to an embodiment of the present invention, a sliding rail and a sliding block which are slidably connected are provided between the pedal body and the floor body.

[0014] According to one embodiment of the present invention, the slide rail is fixed to the bottom surface of the floor body;

[0015] A sliding groove is provided on a side of the slider facing the slide rail, and a side of the slider away from the sliding groove is fixedly connected to the upper surface of the pedal body. The sliding groove of the slider is clamped outside the slide rail and is slidably connected to the slide rail.

[0016] According to one embodiment of the present invention, a ball is provided in a sealing manner at the sliding connection between the slide rail and the slide groove, and a lubricant is provided in the sealing channel where the ball is provided;

[0017] Both sides of the slide rail along the length direction are configured as inner concave surfaces.

[0018] According to one embodiment of the present invention, a pair of linear guide grooves for mounting the slide rails are constructed on the bottom surface of the floor body, the cross-section of the linear guide grooves is convex with a small top and a large bottom, the upper opening groove of the linear guide grooves matches the slide rails, and the lower opening groove of the linear guide grooves leaves a gap with the outside of the slider;

[0019] A pair of linear guide grooves are arranged on both sides of the driving mechanism.

[0020] According to an embodiment of the present invention, an adjusting gasket may or may not be provided between the sliding block and the pedal body.

[0021] According to an embodiment of the present invention, the slide rail is fixedly connected to the bottom surface of the floor body by fastening bolts, and the slide block is fixedly connected to the upper surface of the pedal body by fastening bolts.

[0022] According to one embodiment of the present invention, the floor body and the pedal body are both extruded from hollow aluminum alloy profiles, a hollow cavity is formed in the floor body, a row of parallelogram holes are spaced apart on the bottom surface of the cavity, a screw seat is fixed to the connecting end of the fastening bolt, the shape of the screw seat is a parallelogram matching the parallelogram hole, the width of the cavity matches the length of the screw seat, the screw seat extends into the cavity along the length direction of the parallelogram hole, and is rotated so that the length sides of the screw seat abut against the inner walls on both sides of the width of the cavity.

[0023] According to one embodiment of the present invention, the upper surface of the pedal body is formed with a pair of mounting interfaces symmetrical about the central axis of the pedal body at the position used to connect with the floor body, and the upper surface of the pedal body is formed with anti-slip grooves avoiding the area where the pair of mounting interfaces are located; the front end of the upper surface of the floor body is formed with a step for fitting with the lower retaining edge of the door body.

[0024] According to one embodiment of the present invention, the driving mechanism is a cylinder, which includes a cylinder body and a piston that extends and retracts along the cylinder body, the fixed end of the cylinder body is rotatably connected to the rear end bottom surface of the floor body through a first pin shaft, the extended end of the piston is rotatably connected to the front end bottom surface of the pedal body through a second pin shaft, the first pin shaft and the second pin shaft are arranged in parallel, and the axial directions of the first pin shaft and the second pin shaft are perpendicular to the extension and retraction direction of the piston.

[0025] According to one embodiment of the present invention, the cylinder body is provided with an extending air inlet, a retracting air inlet and a locking air inlet, and the extending air inlet, the retracting air inlet and the locking air inlet are respectively used to be connected to the vehicle body air supply unit through an air path.

[0026] According to one embodiment of the present invention, a throttle valve is provided at at least one of the extending air inlet, the retracting air inlet and the locking air inlet.

[0027] According to one embodiment of the present invention, the cylinder is provided with a magnetically controlled switch, the magnetic body of the magnetically controlled switch is arranged on the piston in the cylinder body, and a pair of moving contacts of the magnetically controlled switch are arranged outside the cylinder body at intervals, and the distance between the two moving contacts is equal to the preset telescopic stroke of the cylinder, and one of the moving contacts is arranged corresponding to the position where the piston is not extended and the magnetic body is arranged.

[0028] According to another embodiment of the present invention, a rail vehicle comprises a vehicle body and the door gap compensator described above, wherein a mounting notch for mounting the door gap compensator is reserved on the door area floor of the vehicle body, a rear end of the floor body is fixedly mounted on a cross beam of the vehicle body and docked with the floor of the vehicle body, and an upper surface of the floor body is flush with an upper surface of the floor of the vehicle body.

[0029] According to one embodiment of the present invention, the installation notch is opened from the door area floor to the side beam of the vehicle body, the front end of the floor body is flush with the outer edge of the side beam, a sealing gasket is provided at the joint between the rear end of the floor body and the floor of the vehicle body, and the upper surface of the floor body is covered with a floor cloth consistent with the floor cloth laid on the upper surface of the floor of the vehicle body.

[0030] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0031] A door gap compensator in an embodiment of the present invention adopts a separately formed floor body and a pedal body, and is installed as a whole in the installation notch reserved in the floor of the door area of ​​the vehicle body after being combined with a driving mechanism, forming an overall embedded structure, which occupies a small space, is easy to install, and has high reliability. After installation, the upper surface of the floor body is at the same height as the floor in the passenger compartment, and has a high degree of matching with the overall vehicle body, reducing the steps at the door and improving the passability of passengers or equipment such as wheelchairs; and it is convenient for the separate control of the door gap compensator.

[0032] A rail vehicle according to an embodiment of the present invention has all the advantages of the door clearance compensator by providing the door clearance compensator, which will not be described in detail here.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram showing the extended state of the floor body and the pedal body of the door clearance compensator according to an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a door clearance compensator according to an embodiment of the present invention showing a floor body and a pedal body in a retracted state;

[0037] Figure 3 It is a structural schematic diagram showing the extended state of the driving mechanism of the door clearance compensator according to an embodiment of the present invention;

[0038] Figure 4 It is a structural schematic diagram of a door clearance compensator display driving mechanism in a retracted state according to an embodiment of the present invention;

[0039] Figure 5 It is a front view schematic diagram of the cooperation between the slide rail and the slider in the door clearance compensator according to the embodiment of the present invention;

[0040] Figure 6 It is a side view schematic diagram of the cooperation between the slide rail and the slider in the door clearance compensator according to the embodiment of the present invention;

[0041] Figure 7 It is a front view schematic diagram showing the connection between the floor body and the pedal body through the slide rail and the slider in the door clearance compensator according to the embodiment of the present invention;

[0042] Figure 8 It is a front view schematic diagram showing that the slide rail and the slider are not installed between the floor body and the pedal body in the door gap compensator of the embodiment of the present invention;

[0043] Fig. 9 is a schematic cross-sectional structure diagram showing a door clearance compensator in a retracted state in a rail vehicle according to an embodiment of the present invention;

[0044] Fig.10 It is a schematic cross-sectional structure diagram showing a door clearance compensator in a rail vehicle in an extended state according to an embodiment of the present invention.

[0045] Reference numerals:

[0046] 10. Floor body; 11. Linear guide groove; 20. Pedal body; 30. Cylinder; 31. Extend air inlet; 32. Retract air inlet; 33. Lock air inlet; 40. First pin shaft; 50. Second pin shaft; 60. Magnetically controlled switch; 70. Slide rail; 80. Slider; 90. Adjusting gasket; 100. Fastening bolt; 110. Screw seat; 120. Crossbeam; 130. Vehicle floor; 140. Side beam. DETAILED DESCRIPTION

[0047] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0049] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0050] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] It should be noted that Figures 1 to 8 A schematic structural diagram of a door clearance compensator provided in an embodiment of the present invention.

[0053] On the one hand, if Figures 1 to 4 As shown, a door clearance compensator provided by an embodiment of the present invention includes a floor body 10, a pedal body 20 and a driving mechanism.

[0054] Specifically, the floor body 10 is configured to be fixedly embedded in the installation notch reserved in the door area floor of the vehicle body. The shape of the floor body 10 can be square or rectangular, and the installation notch is a square or rectangle that is adapted to the size and shape of the floor body 10, so that the floor body 10 can be better matched with the door area floor of the vehicle body after installation.

[0055] The pedal body 20 is slidably connected to the bottom surface of the floor body 10 . Specifically, the pedal body 20 can slide linearly along the floor body 10 , and the sliding direction is toward the train platform.

[0056] In this embodiment, the “front end of the floor body 10 ” and the “front end of the pedal body 20 ” are defined as the end close to the platform, and the “rear end of the floor body 10 ” and the “rear end of the pedal body 20 ” are defined as the end far from the platform.

[0057] The driving mechanism is configured to drive the pedal body 20 to extend and retract horizontally along the floor body 10. The extension and retraction method has high reliability. The driving mechanism provides power for the linear sliding of the pedal body 20, so that when the pedal body 20 needs to be extended, the driving mechanism provides the extension power to drive the pedal body 20 to extend. When the pedal body 20 needs to be retracted, the driving mechanism provides the retraction power to drive the pedal body 20 to retract.

[0058] The door gap compensator of the present embodiment is embedded in the installation notch as an independent whole, which occupies a small space and is easy to install with high reliability. After installation, the upper surface of the floor body 10 is at the same height as the floor in the passenger compartment, and has a high degree of matching with the overall vehicle body, reducing the steps at the doorway and improving the passability of passengers or equipment such as wheelchairs; and it is convenient for the separate control of the door gap compensator.

[0059] like Figures 5 to 8 As shown, according to an embodiment of the present invention, a sliding rail 70 and a slider 80 are provided between the pedal body 20 and the floor body 10. When the pedal body 20 slides, the slider 80 slides along the sliding rail 70. The sliding rail 70 is provided to guide the slider 80, so that the stability and smoothness of the pedal body 20 when sliding can be ensured. Further, the sliding rail 70 is fixed to the bottom surface of the floor body 10, and the specific fixing method can be a fastener fixed connection or other fixed connection form; the slider 80 is provided with a sliding groove on the side facing the sliding rail 70, and the side of the slider 80 away from the sliding groove is fixedly connected to the upper surface of the pedal body 20, and the specific fixing method can be a fastener fixed connection or other fixed connection form. The sliding groove of the slider 80 is clamped outside the sliding rail 70 and is slidably connected to the sliding rail 70. The sliding groove can wrap the middle and lower part of the slider 80, so that after the slider 80 is installed, there is a certain gap between the slider 80 and the bottom surface of the floor body 10, thereby avoiding friction between the slider 80 and the floor body 10 during the sliding process.

[0060] According to an embodiment of the present invention, a ball bearing is sealed at the sliding connection between the slide rail 70 and the slide groove, and a lubricant is provided in the sealing channel where the ball bearing is provided; the slide rail 70 and the slider 80 are in contact through the ball bearing, and the slider 80 is rolling friction when moving on the slide rail 70, and the resistance is very small, and the pedal body 20 will not have a large lateral displacement when extending and retracting, thereby improving the stability of the door clearance compensator; the ball bearing is self-lubricated by the lubricant in the sealing channel to reduce the maintenance cycle, and the lubricant can be lubricating oil or grease. Specifically, one or two rows of ball bearings can be provided at the connection between the slide rail 70 and the slider 80, firstly, grooves for installing the ball bearings are respectively provided at the relative positions of the slide rail 70 and the slider 80, and the length direction of the groove is along the sliding direction, and the two grooves are relatively formed into a sealing channel, and half of the ball bearings are located in the groove of the slide rail 70, and the other half are located in the groove of the slider 80, so that the slide rail 70 and the slider 80 are connected together; through the sealing treatment, the loss of lubricant is avoided, thereby reducing the frequency of adding lubricant, and impurities such as dust can also be prevented from entering the connection between the slide rail 70 and the slider 80.

[0061] In order to reduce or avoid sliding friction between the slide groove and the slide rail 70 which may cause temperature rise during sliding, the slide rail 70 is constructed with concave surfaces on both sides along its length direction, and there is a gap between the inner wall of the slide groove and the slide rail 70 at the concave surface.

[0062] According to one embodiment of the present invention, the bottom surface of the floor body 10 is constructed with a pair of linear guide grooves 11 for installing the slide rail 70. The cross-sectional shape of the linear guide groove 11 is convex with a small top and a large bottom, that is, the opening of the lower opening groove of the linear guide groove 11 is larger than the opening of the upper opening groove, and the lower opening groove is connected to the upper opening groove. The upper opening groove of the linear guide groove 11 matches the slide rail 70, and a gap is left between the lower opening groove of the linear guide groove 11 and the slider 80. By directly forming the linear guide groove 11 on the floor body 10, when the slide rail 70 is installed, the slide rail 70 is directly inserted into the upper opening groove and the upper opening groove is interference fit, and there is no need to adjust the orientation of the slide rail 70, etc., which is convenient to install and has a good positioning effect. The slide rail 70 is stable and reliable after installation. The pair of linear guide grooves 11 are arranged in parallel, so that the pair of slide rails 70 after installation are also parallel to each other.

[0063] A pair of linear guide grooves 11 are disposed on both sides of the driving mechanism. The driving mechanism may be located in the middle of the door gap compensator. The pair of linear guide grooves 11 may be symmetrically disposed about the driving mechanism, thereby making the sliding of the pedal body 20 smoother.

[0064] According to one embodiment of the present invention, an adjustment gasket 90 may or may not be provided between the slider 80 and the pedal body 20, that is, when the distance between the pedal body 20 and the floor body 10 does not need to be adjusted, the adjustment gasket 90 may not be installed. When the distance between the pedal body 20 and the floor body 10 needs to be adjusted, the height difference between the pedal body 20 and the floor body 10 can be adjusted by adding or removing the adjustment gasket 90 between the pedal body 20 and the slider 80 when the slider 80 is installed. The height difference between the pedal body 20 and the floor body 10 is the sum of the thickness of the floor body 10 and the gap between the pedal body 20 and the floor body 10. The thickness of the floor body 10 itself is relatively small, and the gap between the pedal body 20 and the floor body 10 is adjustable, so that the height difference between the pedal body 20 and the floor body 10 is relatively small as a whole, which can meet the needs of special equipment such as wheelchairs to get on and off.

[0065] In a specific embodiment, the slide rail 70 is fixedly connected to the bottom surface of the floor body 10 by fastening bolts 100, and the slider 80 is fixedly connected to the upper surface of the pedal body 20 by fastening bolts 100, so as to ensure the connection strength and connection reliability.

[0066] According to an embodiment of the present invention, the floor body 10 and the pedal body 20 are both extruded from hollow aluminum alloy profiles, which have high strength, light weight, good molding effect, and various required interfaces can be molded at one time.

[0067] Furthermore, a hollow cavity is formed in the floor body 10, and a row of parallelogram holes are spaced apart on the bottom surface of the cavity. The length direction of the parallelogram hole can be along the length direction of the cavity. A screw seat 110 is fixed to the connection end of the fastening bolt 100 (the end away from the head of the fastening bolt 100). The shape of the screw seat 110 is a parallelogram that matches the parallelogram hole. The width of the cavity matches the length of the screw seat 110. The screw seat 110 extends into the cavity along the length direction of the parallelogram hole and rotates at a certain angle so that the length sides of the screw seat 110 abut against the inner walls on both sides of the width of the cavity, thereby clamping the screw seat 110 in the cavity to ensure the stability and firmness of the fastening bolt 100 after installation. In addition, the shape of the screw seat 110 can also be elliptical, which can also achieve the same function.

[0068] When the screw seat 110 is subjected to a large vertical impact, the profile rib plate can effectively play a supporting role, and the stress concentration abnormality of the structure will not occur due to the cavity at that location.

[0069] Of course, the specific number of the fastening bolts 100 can be selected according to actual needs. The fastening bolts 100 adopt this connection form, which can achieve quick disassembly and easy replacement. Accordingly, the slide rail 70 is provided with a plurality of through holes for the fastening bolts 100 to pass through at intervals along its length direction. In order to avoid the head of the fastening bolt 100 being exposed, the through hole can be set as a countersunk hole, and the head of the fastening bolt 100 is located in the countersunk hole.

[0070] According to one embodiment of the present invention, a pair of mounting interfaces symmetrical about the central axis of the pedal body 20 are formed on the upper surface of the pedal body 20 at the position used to connect with the floor body 10. The slider 80 is installed in the mounting interface and fixedly connected to the pedal body 20 by fastening bolts 100. Anti-slip grooves are formed on the upper surface of the pedal body 20 avoiding the area where the pair of mounting interfaces are located to increase the anti-slip effect and avoid slipping; a step is formed at the front end of the upper surface of the floor body 10 for fitting with the lower retaining edge of the door body, so that after the car door is closed, the lower retaining edge of the door body fits with the step, which on the one hand increases the sealing effect, and on the other hand leaves space for the lower retaining edge. After the lower retaining edge fits with the step, the outer side of the lower retaining edge is flush with the front end of the floor body 10.

[0071] According to one embodiment of the present invention, the driving mechanism is a cylinder 30, and parallel pin holes are set at both ends of the cylinder 30, and the pin holes are set horizontally. The cylinder 30 includes a cylinder body and a piston that extends and retracts along the cylinder body. The fixed end of the cylinder body is rotatably connected to the rear end bottom surface of the floor body 10 through a first pin shaft 40, and the extended end of the piston is rotatably connected to the front end bottom surface of the pedal body 20 through a second pin shaft 50. The rear end bottom surface of the floor body 10 and the front end bottom surface of the pedal body 20 are both formed with mounting seats. The first pin shaft 40 and the second pin shaft 50 each pass through the rotating connection hole of the mounting seat and the corresponding pin hole to install the cylinder 30. After the cylinder 30 is installed, one end is connected to the floor body 10, and the other end is connected to the pedal body 20. The first pin shaft 40 is parallel to and horizontally arranged with the second pin shaft 50, and the axial direction of the first pin shaft 40 and the second pin shaft 50 is perpendicular to the extension and contraction direction of the piston, so that the pedal body 20 has the ability to rotate along the vertical plane. When a vertical relative displacement occurs between the pedal body 20 and the floor body 10, the cylinder 30 can rotate along the pin shaft without generating internal stress.

[0072] According to one embodiment of the present invention, the cylinder body is provided with an extended air inlet 31, a retracted air inlet 32 ​​and a locked air inlet 33. The extended air inlet 31 is provided at the rear end of the cylinder body, that is, at the rear end of the piston, the retracted air inlet 32 ​​is provided at the front end of the cylinder body, and the locked air inlet 33 is provided at the position where the spring plug is provided at the front end of the cylinder mouth of the cylinder body. The extended air inlet 31, the retracted air inlet 32 ​​and the locked air inlet 33 are respectively used to be connected to the vehicle body air supply unit through the air path, so that the vehicle body's own air supply unit can supply air to the cylinder 30, which is convenient to use. When the extended air inlet 31 is supplied with air, the piston extends; when the retracted air inlet 32 ​​is supplied with air, the piston retracts; the premise for the normal operation of the extended air inlet 31 and the retracted air inlet 32 ​​is that the locked air inlet 33 can be normally supplied with air, and the locked air inlet 33 can push open the spring plug when supplying air, so that the air path is connected. At this time, the piston can be extended and retracted according to specific needs. When the locked air inlet 33 loses air, the piston is locked and cannot be extended and retracted. Therefore, when an emergency or failure occurs, the air inlet 33 can be directly locked and the piston stops at the original position, so that the passenger will not step on the pedal body 20 and step on nothing, thereby improving safety.

[0073] According to one embodiment of the present invention, a throttle valve is provided at at least one of the extending air inlet 31, the retracting air inlet 32 ​​and the locking air inlet 33. For example, a throttle valve can be provided at each of the extending air inlet 31, the retracting air inlet 32 ​​and the locking air inlet, or a throttle valve can be provided at one or both of the air inlets. The specific setting can be selected as needed. The throttle valve can be provided to adjust the extension and retraction speed of the piston.

[0074] According to an embodiment of the present invention, the cylinder 30 is provided with a magnetic control switch 60. When the piston inside the cylinder 30 passes, the magnetic control switch 60 receives a corresponding signal and can provide the specific position of the piston of the cylinder 30 to the vehicle. At the same time, the vehicle controls the air supply volume of the three air inlets of the cylinder 30 through the position of the piston, thereby realizing the telescopic control of the pedal body 20 of the door clearance compensator. Specifically, the magnetic control switch 60 includes a magnetic body (such as a magnet) and a moving contact acting on the magnetic body. The magnetic body of the magnetic control switch 60 is arranged on the piston in the cylinder body, and a pair of moving contacts of the magnetic control switch 60 are arranged outside the cylinder body. The spacing between the two moving contacts is equal to the preset telescopic stroke of the cylinder 30. One of the moving contacts corresponds to the position where the magnetic body is arranged when the piston is not extended, and the other moving contact is arranged near the front end of the cylinder body at a distance of one telescopic stroke. The position when the piston is not extended is triggered by the magnetic body to generate a signal and send it to the vehicle control system. When the piston is extended to the magnetic body and the other moving contact is opposite, the moving contact is triggered to generate a signal and send it to the vehicle control system, thereby the control system controls the piston to stop at the position corresponding to the stroke.

[0075] In addition, when the vertical load above the pedal body 20 exceeds a certain value, the control system controls the piston to stop working, thereby ensuring the safety of the personnel above the pedal body 20 .

[0076] On the other hand, a rail vehicle according to an embodiment of the present invention, such as Fig. 9 and Fig.10 As shown, it includes a vehicle body and the above-mentioned door gap compensator. The door area floor of the vehicle body is reserved with an installation notch for installing the door gap compensator. The rear end of the floor body 10 is fixedly mounted on the crossbeam 120 of the vehicle body and docked with the floor of the vehicle body. The door gap compensator is carried by the crossbeam 120 of the vehicle body, which has strong bearing capacity and high reliability. The upper surface of the floor body 10 is flush with the upper surface of the floor of the vehicle body, so that the door gap compensator is well matched with the vehicle after installation, reducing the steps at the door and improving the passability. The working principle of the door gap compensator is that when the piston of the cylinder 30 is extended, the pedal body 20 is pushed out to make up for the gap between the vehicle and the platform. After it is in place, the piston is locked in the extended position; when the piston of the cylinder 30 is retracted, the pedal body 20 is pulled back and hidden under the floor body 10, which is consistent with the outer contour of the vehicle body and will not invade the limit. After the pedal body 20 is extended and retracted, the piston of the cylinder 30 is in a locked position after the air pressure is closed by locking the air inlet 33, and cannot be extended to ensure safety. The door gap compensator of the present embodiment is embedded in the installation notch as an independent whole, which occupies a small space and is easy to install with high reliability. After installation, the upper surface of the floor body 10 is at the same height as the floor in the passenger compartment, and has a high degree of matching with the overall vehicle body, reducing the steps at the doorway and improving the passability of passengers or equipment such as wheelchairs; and it is convenient for the separate control of the door gap compensator.

[0077] According to one embodiment of the present invention, the installation gap is opened from the door area floor to the side beam 140 of the vehicle body, the front end of the floor body 10 is flush with the outer edge of the side beam 140, and does not occupy the space inside the vehicle after installation. A sealing gasket is provided at the joint between the rear end of the floor body 10 and the floor of the vehicle body, and the sealing is good. The upper surface of the floor body 10 is covered with a floor cloth consistent with the floor cloth laid on the upper surface of the floor of the vehicle body, so that the door gap compensator and the vehicle body floor 130 are integrated with each other, and the matching degree is high.

[0078] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A door clearance compensator, characterized in that: include: The floor body is configured to be fixedly embedded in a mounting notch reserved in the floor of the vehicle door area; A pedal body slidably connected to the bottom surface of the floor body; A driving mechanism, configured to drive the pedal body to extend and retract horizontally along the floor body; A sliding rail and a sliding block are provided between the pedal body and the floor body, and the sliding rail is fixedly connected to the bottom surface of the floor body by fastening bolts; The floor body and the pedal body are both extruded from an aluminum alloy hollow profile, a hollow cavity is formed in the floor body, a row of parallelogram holes are spaced apart on the bottom surface of the cavity, a screw seat is fixed to the connecting end of the fastening bolt, the shape of the screw seat is a parallelogram matching the parallelogram hole, the width of the cavity matches the length of the screw seat, the screw seat extends into the cavity along the length direction of the parallelogram hole, and is rotated so that the length sides of the screw seat abut against the inner walls on both sides of the width of the cavity; The driving mechanism is a cylinder, which includes a cylinder body and a piston that is telescopic along the cylinder body, the fixed end of the cylinder body is rotatably connected to the rear end bottom surface of the floor body through a first pin shaft, and the extended end of the piston is rotatably connected to the front end bottom surface of the pedal body through a second pin shaft, the first pin shaft and the second pin shaft are arranged in parallel, and the axial directions of the first pin shaft and the second pin shaft are perpendicular to the telescopic direction of the piston; The cylinder body is provided with an extended air inlet, a retracted air inlet and a locked air inlet, and the extended air inlet, the retracted air inlet and the locked air inlet are respectively used to be connected to the vehicle body air supply unit through an air path; The cylinder is provided with a magnetically controlled switch, the magnetic body of the magnetically controlled switch is arranged on the piston in the cylinder body, a pair of moving contacts of the magnetically controlled switch are arranged outside the cylinder body, and the distance between the two moving contacts is equal to the preset telescopic stroke of the cylinder, and one of the moving contacts is arranged corresponding to the position where the piston is not extended and the magnetic body is arranged.

2. The door clearance compensator according to claim 1, characterized in that: The slide rail is fixed to the bottom surface of the floor body; A sliding groove is provided on a side of the slider facing the slide rail, and a side of the slider away from the sliding groove is fixedly connected to the upper surface of the pedal body. The sliding groove of the slider is clamped outside the slide rail and is slidably connected to the slide rail.

3. The door clearance compensator according to claim 2, characterized in that: A ball bearing is provided in a sealing manner at the sliding connection between the slide rail and the slide groove, and a lubricant is provided in the sealing channel where the ball bearing is provided; Both sides of the slide rail along the length direction are configured as inner concave surfaces.

4. The door clearance compensator according to claim 1, characterized in that: The bottom surface of the floor body is constructed with a pair of linear guide grooves for installing the slide rails, the cross-section of the linear guide grooves is convex with a small top and a large bottom, the upper opening groove of the linear guide grooves matches the slide rails, and the lower opening groove of the linear guide grooves leaves a gap with the outside of the slider; A pair of linear guide grooves are arranged on both sides of the driving mechanism.

5. The door clearance compensator according to claim 2, characterized in that: An adjusting gasket may or may not be provided between the sliding block and the pedal body.

6. The door clearance compensator according to claim 1, characterized in that: The sliding block is fixedly connected to the upper surface of the pedal body by fastening bolts.

7. The door clearance compensator according to claim 1, characterized in that: The upper surface of the pedal body is formed with a pair of mounting interfaces symmetrical about the central axis of the pedal body at the position used to connect with the floor body, and the upper surface of the pedal body is formed with anti-slip grooves avoiding the area where the pair of mounting interfaces are located; the front end of the upper surface of the floor body is formed with a step for fitting with the lower retaining edge of the door body.

8. The door clearance compensator according to claim 1, characterized in that: A throttle valve is provided at at least one of the extending air inlet, the retracting air inlet and the locking air inlet.

9. A rail vehicle, comprising a vehicle body, characterized in that: It also includes a door gap compensator as described in any one of claims 1 to 8, wherein the door area floor of the vehicle body has a mounting notch reserved for mounting the door gap compensator, the rear end of the floor body is fixedly mounted on the crossbeam of the vehicle body and docked with the floor of the vehicle body, and the upper surface of the floor body is flush with the upper surface of the floor of the vehicle body.

10. The rail vehicle according to claim 9, characterized in that The installation notch is opened from the door area floor to the side beam of the vehicle body, the front end of the floor body is flush with the outer edge of the side beam, a sealing gasket is provided at the joint between the rear end of the floor body and the floor of the vehicle body, and the upper surface of the floor body is covered with a floor cloth consistent with the floor cloth laid on the upper surface of the floor of the vehicle body.

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