WO2023070806A1 - Centering apparatus - Google Patents

Abstract

The present application provides a centering apparatus, comprising: a sleeve body, comprising a first chamber, two first mounting holes being symmetrically provided on a side wall of the sleeve body; blocking plates, comprising a first blocking plate and a second blocking plate, mounted at the two first mounting holes, respectively, and an end surface of each blocking plate facing the mounting hole comprising an arc-shaped surface; a block structure, disposed in the first chamber and comprising a second chamber penetrating through a block structure body; a rolling member, disposed at openings at two ends of the second chamber and in contact with the arc-shaped surfaces of the blocking plates of the corresponding sides; and an elastic member, disposed in the second chamber. The arc-shaped surface of the first blocking plate comprises: a first arc-shaped segment having a radius smaller than that of the first chamber; the arc-shaped surface of the second blocking plate comprises: a second arc-shaped segment having the same diameter as the first chamber; and two ends of the first arc-shaped segment and the second arc-shaped segment along a radial direction of the first chamber having an overlapping segment. The centering apparatus can achieve centering control of multiple segments, the centering device can be stopped at a required place, and performs centering in other places.

Description

Centering device

This application claims the priority of a Chinese patent application with application number 202111269038.5 and application title "Centering Device" filed with the China Patent Office on October 29, 2021, the entire contents of which are incorporated herein by reference.

technical field

The application belongs to the technical field of buffer devices for rail vehicles, and in particular relates to a centering device for a coupler.

Background technique

The centering device is an important device for the coupler buffer to realize the horizontal swing of the coupler and the automatic centering function. The application of the centering device in the coupler buffer is very common.

Under the state of the art, the coupler buffer centering device can realize the automatic centering function of ±15° after the coupler swings horizontally. When the coupler swings left and right within 15°, the centering device can automatically return to its position due to the recovery force of the disc spring compression. This centering method makes the coupler only within 15°, and no matter where it is, it will generate a centering force and return to the center position. The coupler cannot control the centering angle, and cannot realize the multi-stage adjustable function.

In order to meet the needs of a wider range of alignment angles, such as manually swinging a specific angle and stopping at a specific angle when the vehicle is too small to facilitate hanging, the alignment device must meet the new alignment angle requirements, for example: 1. There is centering force within a certain range, and automatic centering can be realized; 2. There is no centering force when exceeding the first range and entering the second range; 3. There is alignment within the third range beyond the second range Medium force, and can be centered automatically.

Chinese patent CN101857041B discloses a compact centering device. Through the cooperation of the circular arc on the roller and the roller block, when the hook buffer device rotates in the horizontal direction due to external force, when the external force is small or reduced, the hook buffer device The centerline is aligned with the vehicle centerline. However, it only has the adjustment function within the swing range of a certain angle, and does not have the segment adjustment function, and cannot control the centering angle.

Contents of the invention

For the above-mentioned problems existing in the prior art, the technical scheme that the application adopts is:

A centering device, used in conjunction with a coupler buffer for centering the coupler rotation, is characterized in that it includes:

Sleeve body: includes a first cavity along the axial direction of the sleeve body, and two first installation holes are symmetrically arranged on the side wall of the sleeve body along the radial direction of the sleeve body. The first installation hole and the first installation cavity connected;

Blocking plate: including a first blocking plate and a second blocking plate, which are respectively installed at the two first installation holes, and the end surface of each blocking plate facing the first installation hole includes an arc surface;

Block structure: set in the first chamber, including a second chamber passing through the body of the block structure, the block structure is arranged behind the first chamber, and the openings at both ends of the second chamber are connected to the The first mounting hole is aligned;

Rolling parts: set at the two ends of the second chamber, in contact with the arc surface of the corresponding side blocking plate;

elastic member: arranged in the second chamber;

The axial center of the sleeve is the center of rotation of the rolling element; taking the center of rotation as a reference:

The arc surface of the first blocking plate includes: a first arc section with a radius smaller than the radius of the first chamber;

The arc surface of the second blocking plate includes: a second arc segment with the same diameter as the first chamber;

The first arc segment and the second arc segment have coincident segments at both ends along the radial direction of the first chamber; the blocking plates on both sides limit the rolling element and the elastic element to the arc In the space relative to the curved surface, the elastic member can be compressed during the movement of the rolling member along the arcuate surface.

In some embodiments of the present application, the arc-shaped surface of the first blocking plate further includes a third arc-shaped section with the same diameter as the first chamber, including two sections, which are respectively connected to the first arc-shaped section. Both ends are connected; the second arc segment and the third arc segment have coincident segments at both ends along the radial direction of the first chamber.

In some embodiments of the present application, the arc-shaped surface of the second blocking plate further includes a fourth arc-shaped segment with a radius smaller than the radius of the first chamber, including two segments, which are respectively connected to the second arc-shaped segment. Both ends are connected; the fourth arc segment and the third arc segment have coincident segments at both ends along the radial direction of the first chamber.

In some embodiments of the present application, the arc-shaped surface of the second blocking plate further includes a fifth arc-shaped section with a radius equal to the radius of the first chamber, including two sections, which are respectively connected to the fourth arc-shaped section. Both ends are connected; the fifth arc segment and the third arc segment have overlapped segments at both ends along the radial direction of the first chamber.

In some embodiments of the present application, the third arc segment extends to the edge of the first block arc segment, and the fifth arc segment extends to the edge of the second block arc segment.

In some embodiments of the present application, the center point of the first arc segment is located at the symmetrical center in the length direction of the first blocking board, and the center point of the second arc segment is located in the length direction of the second blocking board center of symmetry.

In some embodiments of the present application, the centering device further includes:

Shaft block: including two pieces, respectively installed at both ends of the second chamber, one end of the shaft block is arranged in the second chamber, and the other end of the shaft block is located outside the second chamber, The shaft block can move relative to the second chamber, and the elastic member is restricted between the two shaft blocks;

The rolling member is a roller, which is pivotally connected to one end of the shaft block located outside the second chamber.

In some embodiments of the present application, one end of the shaft block located in the second chamber forms an opening, and the elastic member is located in the opening.

In some embodiments of the present application, the first installation hole includes:

Arc-shaped hole segment: it includes the upper arc-shaped segment and the lower arc-shaped segment, and the upper and lower arc-shaped segments are non-closed structures;

Slot section: including a first side slot section and a second side slot section, the first side slot section connects the first side gap between the upper arc section and the lower arc section, and the second side slot section connects the second side clearance of the upper arc segment and the lower arc segment;

The axial height of the slot section is greater than the width of the gap between the upper arc section and the lower arc section;

Protruding structures are formed at both ends of the arc-shaped surface of the blocking plate, and are respectively inserted into the first slotted hole segment and the second slotted hole segment.

In some embodiments of the present application, a clamping block is provided on the end surface of the block structure facing the buffer for installation and fixing between the block structure and the buffer.

The centering device provided by the present application has the beneficial effects of:

(1) The arc surface of the blocking plate on both sides adopts an asymmetric structure, and each side blocking plate includes a multi-section segmented arc-shaped structure, including the same diameter section and the different diameter section of the sleeve body cavity. In the different diameter section, the In the middle adjustment, within the same diameter section, the rotation state of the coupler can be maintained, which is convenient for maintaining the vehicle in the rotation state for coupling and other operations.

(2) The segmental action of the double-sided arc segment can realize the combination of different centering functions through the combination of multiple segments with the same diameter and multiple segments with different diameters. It can realize multi-segment centering control, stop where needed, and center in other places. Apply it to the automatic coupler to ensure that the coupler is kept in the center and does not swing left and right under normal operating conditions. When the train needs to be connected on a small curve but exceeds the range of the connection, it is allowed to manually swing one or more small angles to facilitate automatic connection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is a schematic diagram of an exploded structure of a centering device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the assembled state of the centering device according to the embodiment of the present application.

Fig. 3 is a schematic diagram of the working cooperation of the arc section of the double-sided blocking plate in the embodiment of the present application.

Fig. 4a is a schematic structural diagram of the arc section of the first blocking plate according to the embodiment of the present application.

Fig. 4b is a schematic structural diagram of the arc section of the second blocking plate according to the embodiment of the present application.

Fig. 5 is a partial enlarged view of the first mounting hole of the embodiment of the present application on one side.

Fig. 6 is a schematic diagram of the assembly structure of the centering device and the buffer according to the embodiment of the present application.

1-sleeve body, 101-first chamber, 102-first mounting hole, 1021-upper arc section, 1022-lower arc section, 1023-first side slot section, 1024-second side slot section , 103-side wall, 104-plate structure, 105-second mounting hole, 106-extension, 107-rotation center;

2-blocking board; 201-the first blocking board, 202-the second blocking board, 203-protruding structure;

3-arc surface, 301-first arc segment, 302-second arc segment, 303-third arc segment, 304-fourth arc segment, 305-fifth arc segment;

4-block structure, 401-block structure body, 402-second chamber, 403-block;

5-rolling element, 501-first rolling element, 502-second rolling element, 51-roller, 52-axle, 53-wheel body;

6 - elastic piece;

7-shaft block, 701-first shaft block, 702-second shaft block, 71-axis hole, 72-cavity mouth,

8 - guide rod;

9- wear sleeve;

10 - Buffer.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

It should be noted that when an element is referred to as being “disposed on” or “connected to” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. The terms "first", "second", ... "fifth" are used for descriptive purposes only and are not used to imply relative importance.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "outer" and "inner" are based on the orientation or positional relationship shown in the drawings, and are only for convenience The present application and the simplified description are described without indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the present application.

The present application provides a centering device, which is used together with the coupler buffer 10 for centering the coupler rotation.

Referring to Figures 1 and 2, the centering device includes a casing 1, a blocking plate 2, a block structure 4, a rolling element 5, an elastic element 6, and the like. The specific structure is as follows:

Sleeve 1: includes a first chamber 101 along the axial direction of the sleeve 1, along the radial direction of the sleeve 1, a first installation hole 102 is symmetrically arranged on the side wall 103 of the sleeve, and the first installation hole 102 and the first cavity Chamber 101 communicates. In this embodiment, the cylinder body of the casing 1 is cylindrical, and a cylindrical hole is provided along the thickness direction of the substrate. The cylindrical hole is concentric with the casing 1 , and the cylindrical hole is the first chamber 101 . The axial direction of the cylindrical hole and the casing 1 is the axial direction of the casing 1, and the axial directions described below in this application are all in the same direction as the axial direction of the casing 1. Based on the above, it can be understood that the radial direction of the casing 1 described in this application is a direction passing through the axis of the casing 1 and perpendicular to the axial direction. in the same direction as the actual.

The upper end surface of the sleeve body 1 includes a section of plate-like structure 104 extending radially outward along the base body. The plate-like structure 104 is provided with a second mounting hole 105 for fixing the sleeve body 1 to the buffer 10 through a fixing piece. .

Both radially symmetrical sides of the casing 1 include a section of radial extension 106 , and the end surface of the extension 106 is straight, which facilitates the installation of the blocking plate 2 . The first mounting hole 102 passes through the cylindrical hole along the direction of the extension portion 106 toward the cylindrical hole. That is, the first installation hole 102 penetrates through the extending portion 106 along the radial direction of the casing 1 . Preferably, the plate-shaped structure 104 and the extension part 106 are arranged in the same radial direction, or are arranged in an integrated structure with the extension part 106 to save space.

Blocking plate 2: including a first blocking plate 201 and a second blocking plate 202, which are respectively installed at two first installation holes 102, and the end surface of each blocking plate 2 facing the first installation hole 102 includes an arc-shaped surface 3; The size of the first mounting hole 102 is configured to accommodate at least the entire arc-shaped surface 3 . After the blocking plate 2 is installed at the first installation hole 102, the arc-shaped surface 3 is located in the installation hole 102; the two sides of the arc-shaped surface 3 are the blocking plate 2 and the first chamber 101, which are installed to the extension part 106, and fixed by The piece is fixed. After the blocking plates 2 are installed on the sleeve body 1 , the two blocking plates 2 close the installation holes 102 and form a circumferentially closed cavity with the first chamber 101 .

Block structure 4: set in the first chamber 101, that is, in a circumferentially closed cavity surrounded by the blocking plate 2 and the first chamber 101, including the second chamber 402 passing through the block structure body 401, the block structure 4 After the first chamber 101 is installed, the extension direction of the second chamber 402 is the radial direction of the sleeve body 1, and the openings at both ends of the second chamber 402 can be aligned with the two first installation holes 102 respectively. The centering device is connected to the buffer 10 via the block structure 4 .

The rolling elements 5 are respectively arranged at the openings at both ends of the second chamber 402 , and are in contact with the arc-shaped surface 3 of the corresponding side blocking plate. Wherein, the rolling element 5 disposed near the first blocking plate 201 is the first rolling element 501 , and the rolling element 5 disposed near the second blocking plate 202 is the second rolling element 502 .

Elastic member 6: set in the second chamber 402; in this embodiment, the elastic member 6 is a compression spring.

The axial center of the casing 1 is the center of rotation 107 of the rolling element 5. Since the casing 1 is cylindrical, the axis of the cylinder is the center of rotation 107 of the rolling element 5. Since the first chamber 101 is a cylindrical cavity, the center of rotation The distance between 107 and the side wall 103 corresponds to the radius of the first chamber 101 .

Based on the center of rotation 107:

The arc surface 3 of the first blocking plate 201 includes: a first arc section 301 whose radius is smaller than that of the first chamber 101;

The arc surface 3 of the second blocking plate 202 includes: a second arc section 302 having the same diameter as the first chamber 101;

The first arc section 301 and the second arc section 302 have overlapping sections along the two ends of the radial direction of the first chamber 101; In the relative space of the shaped surface 3 , during the movement of the rolling element 5 along the arc surface 3 , the elastic element 4 can be compressed when running into an arc section whose radius is smaller than that of the first chamber 101 .

Specifically, the "coincident section" mentioned here refers to: the two rolling elements 5 are located at both ends of the first chamber 301 in the same radial direction, the first arc section 301 and the second arc section 302 The length of the corresponding arc section must satisfy that when the rolling element 5 on one side is in the first arc section 301, the rolling element 5 on the other side can be in the second arc section 302, that is, the first arc section 301 and The second arc segment 302 has a central angle coincident segment.

The specific action process of the rolling member 5 is as follows: when it moves to the same diameter section as the first chamber 101, it will not compress the elastic member 6, and the elastic member 6 has no centering force and does not produce a centering effect; When moving to a segment with a smaller radius than the first chamber 101 , it will compress the elastic member 6 , and then the elastic member 6 has a tendency to recover, and generates a centering force, which has a centering effect.

Therefore, when the rolling member 5 moves to the first arc segment 301, the elastic member 6 is compressed to generate a centering force due to the reduced radius, while the side of the second arc segment 302 does not generate a centering force because the radius remains unchanged.

Furthermore, based on the combination of multi-stage different-diameter structures, the centering range of the first blocking plate 201 and the second blocking plate 202 can be adjusted by configuring the radian and combination relationship of each stage, so that the centering device can act in stages.

Referring to Fig. 3, Fig. 4a and Fig. 4b, in some embodiments of the present application, a combined action structure of arc-shaped surfaces on both sides is further provided:

The arc surface 3 of the first blocking plate 201 further includes a third arc section 303 with the same diameter as the first chamber 101, including two sections, which are respectively connected to the two side ends of the first arc section 301; The two ends of the arc-shaped segment 302 and the third arc-shaped segment 303 along the radial direction of the first chamber have coincident segments. Referring to the definition of "coincident segment" above, the third arc segment 303 and the second arc segment 302 have an overlap segment of arc central angles.

In order to further improve the centering adjustment effect in a multi-angle range, in some embodiments of the present application, the arc-shaped surface 3 of the second blocking plate 202 further includes a fourth arc-shaped section 304 whose radius is smaller than that of the first chamber 101, including two Segments are respectively connected to the ends on both sides of the second arc segment 302; the fourth arc segment 304 and the third arc segment 303 have coincident segments at both ends along the radial direction of the first chamber 101. Similarly, the fourth arc segment 304 and the third arc segment 303 have overlapping arc central angles, so that the two can cooperate to produce a centering effect on the rolling element.

In order to further improve the centering adjustment effect of the multi-angle range, in some embodiments of the present application, the arc-shaped surface 3 of the second blocking plate 202 further includes a fifth arc-shaped section 305 whose radius is equal to the radius of the first chamber 101, including two The segments are respectively connected to the ends on both sides of the fourth arc segment 304 ; Similarly, the fifth arc segment 305 and the third arc segment 303 have overlapping arc central angles along the first chamber 101 .

In the above implementation structure, the third arc segment 303 extends to the edge of the arc segment of the first blocking plate 201, that is, the first blocking plate 201 includes two arc segments with different radii; the fifth arc segment 305 extends to The edge of the arc segment of the second blocking plate 202, that is, the second blocking plate 202 includes three arc segments with different radii. This structure limits the maximum centering boundary (the third arc segment 303 and the fifth arc segment 305 ), ensures the rotation of the rolling element, and cannot cause damage due to excessive rotation.

In the above implementation structure, the center point of the first arc segment 301 is located at the symmetrical center of the first blocking plate 201 in the longitudinal direction, and the center point of the second arc segment 302 is located at the symmetrical center of the second blocking plate 202 in the longitudinal direction. Therefore, the first arc segment 301 and the third arc segment 303 form a symmetrical structure on the first blocking plate 201; A symmetrical structure is formed on the plate 202 to ensure the controllable symmetry of the bilateral movement and centering of the rolling elements.

Based on the above structure, the working process of the centering device of the present application and the technical effects achieved thereby are as follows.

When the coupler is stressed in the horizontal direction, the buffer 10 drives the block structure 4 to rotate, and the rolling element 5 in the centering device moves along the arc-shaped surfaces 3 of the blocking plates 2 on both sides under the drive of the block structure 4 . The initial position of the rolling member 5 is located at the center point of the first arc segment 301 and the center point of the second arc segment 302 .

The rolling element 5 rotates along the double-sided blocking plate 2, the initial rotation angle, the radius corresponding to the second arc segment 302 is equal to the first chamber 101, but the radius of the first arc segment 301 is smaller than the radius of the first chamber 101, The rolling element 5 moves to the middle and compresses the elastic element 6, thereby generating a centering force; the first blocking plate 201 provides a rotating curved surface in the first section. When the rolling element 5 is within the range of the first section, the centering device has Centering force, the coupler can be centered automatically;

When the rolling element 5 continues to rotate along the arc surface 3, and the first rolling element 501 exceeds the range of the first arc segment 301 and enters the range of the third arc segment 303, at this time, the second rolling element 502 is still located on the second blocking plate In the second arc segment 302 of 202, the radius of gyration is equal to the radius of the first chamber 101 at this time, and the radius of rotation on both sides of the continuous rotation does not change, so in the second segment, the centering device has no centering force, Block structure 4 can stop at this time;

When the rolling element 5 rotates further and the first rolling element 501 is still in the range of the third arc section 303, the second rolling element 502 enters the fourth arc section 304 of the second blocking plate 202, because the fourth arc section 304 The radius is smaller than the radius of the first chamber 101, the rotation on the second blocking plate 202 will further compress the elastic member 6, and the centering device will generate a centering force, prompting the rolling member 5 to drive the block structure 4 back to the center; thus, the second The second blocking plate 202 provides a rotating curved surface in the third section. In the third section, the centering device has a centering force, and the coupler can be automatically centered;

When the rolling element 5 rotates further, the first rolling element 501 is still in the range of the third arc section 303, and when the second rolling element 502 enters the fifth arc section 305 of the second blocking plate 202, due to the fifth arc section 305 The radius of is equal to the radius of the first chamber 101. At this time, continuing to rotate will not cause a change in the radius, so no centering force is generated, and the block structure 4 can stop at a position within this range.

The two blocking plates 2 that provide the centering angle in the centering device are left and right asymmetrical, that is, the first blocking plate 201 can provide the centering angle in the first section, and the second blocking plate 202 can provide the centering angle in the third section . The centering device can realize multi-stage centering control and centering cancellation, and can stop where needed and center in other places.

The configuration structure of the arc section of the blocking plate provided in the above embodiment is not a limitation to the structure of the blocking plate, the first blocking plate 201 and the second blocking plate 202 can be further extended to more segment structures, so that the block structure 4 can be More positions to stop and center.

In some embodiments of the present application, a structure and installation form of the rolling element 5 are further provided. Specifically, the centering device also includes:

Shaft block 7: consists of two pieces, respectively installed at both ends of the second chamber 402, one end of the shaft block 7 is set in the second chamber 402, and the other end is located outside the second chamber 402, the shaft block 7 can be opposite to the second chamber 402 The second chamber 402 moves, and the elastic member 6 is limited between the two shaft blocks 7. By controlling the length of the elastic member 6, the position of the shaft block 7 relative to the second chamber 402 can be adjusted so that it can partially extend to the second chamber 402. Outside the second chamber 402;

The rolling member 5 is a roller 51 , which is pivotally connected to one end of the shaft block 7 outside the second chamber 402 . The roller 51 includes a wheel shaft 52 and a wheel body 53 arranged on the wheel shaft 52 , the rolling surface of the wheel body 53 is in contact with the arc-shaped surface 3 of the blocking plate 2 .

Specifically, two shaft blocks 7 are defined as a first shaft block 701 and a second shaft block 702 , which are respectively inserted into the second chamber 402 through ports on both sides of the second chamber 402 . The part protruding to the outside of the second chamber 402 has two opposite protruding structures spaced up and down, and is provided with a shaft hole 71 , and the wheel shaft 52 of the roller 51 is inserted into the shaft hole 71 .

In some embodiments of the present application, one end of the shaft block 7 located in the second chamber 402 forms a cavity 72, and the elastic member 6 is installed in the cavity 72. This structure can better define the elastic component 6 and avoid the elastic component 6. Rocking in the second chamber 402 ensures a stable compressive effect on it. The elastic piece 6 can further be sleeved on the guide rod 8 to avoid abnormal deformation of the elastic piece 6 .

In order to ensure that the shaft block 7 can be smoothly inserted into the second chamber 402 , its outer diameter needs to be smaller than the inner diameter of the second chamber 402 , which will cause a movement margin between the two, which is prone to contact wear. To solve this problem, some embodiments of the present application further include:

Wear sleeves 9 : several pieces are provided at intervals on the outer wall of the shaft block 7 to reduce direct wear between the shaft block 7 and the second chamber 402 . Wear sleeve 9 can adopt materials such as rubber to make, and can replace after being damaged.

In order to solve the problem of stable installation and cooperation between the blocking plate 2 and the sleeve body 1, in some embodiments of the present application, a cooperative installation structure between the two is further provided. Referring to FIG. 5, the first mounting hole 102 includes:

Arc-shaped hole section: used to accommodate rolling parts, including the upper arc-shaped section 1021 and the lower arc-shaped section 2022, and the upper and lower arc-shaped sections are non-closed structures;

Slot section: including a first side slot section 1023 and a second side slot section 1024, the first side slot section 1023 connects the first side gap of the upper arc section 1021 and the lower arc section 1022, the second The side slot hole section 1024 connects the second side gap between the upper arc section 1021 and the lower arc section 1022;

The axial height of the slot section is greater than the width of the gap between the upper arc section 1021 and the lower arc section 1022 .

Protruding structures 203 are formed at both ends of the arc-shaped surface of the blocking plate 2 , and are respectively inserted into the first slotted hole section 1023 and the second slotted hole section 1024 . The matching position of the arc-shaped hole section and the slot section forms a necking structure relative to its two sides, which can ensure that the blocking plate 2 is stuck in the slot section and is not easy to come out.

Referring to FIG. 6 , further, in order to solve the problem of installation of the centering device and the coupler buffer 10 , a block 403 is provided on the end surface of the block structure 4 facing the buffer 10 . Correspondingly, the buffer 10 has a housing The clamping slot of the clamping block 403 is used for installation and fixing between the clamping block 403 and the buffer 10 .

The above-mentioned centering device is used in conjunction with the coupler buffer 10, which can generate different forces on the coupler in different swing ranges of the coupler, and can realize multi-stage centering control, and can stop at the required place and center at other places. Use the automatic coupler to ensure that under normal operation, the coupler is kept in the center and does not swing left and right. When the train needs to be connected on a small curve but exceeds the range of the connection, it is allowed to manually swing one or more small angles to facilitate automatic connection.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection of the application. within range.

Claims (10)

1. A centering device, used in conjunction with a coupler buffer for centering the coupler rotation, is characterized in that it includes:

   Sleeve body: includes a first cavity along the axial direction of the sleeve body, and two first installation holes are symmetrically arranged on the side wall of the sleeve body along the radial direction of the sleeve body. The first installation hole and the first installation cavity connected;

   Blocking plate: including a first blocking plate and a second blocking plate, which are respectively installed at the two first installation holes, and the end surface of each blocking plate facing the first installation hole includes an arc surface;

   Block structure: set in the first chamber, including a second chamber passing through the body of the block structure, the block structure is arranged behind the first chamber, and the openings at both ends of the second chamber are connected to the The first mounting hole is aligned;

   Rolling parts: set at the two ends of the second chamber, in contact with the arc surface of the corresponding side blocking plate;

   elastic member: arranged in the second chamber;

   The axial center of the sleeve is the center of rotation of the rolling element; taking the center of rotation as a reference:

   The arc surface of the first blocking plate includes: a first arc section with a radius smaller than the radius of the first chamber;

   The arc surface of the second blocking plate includes: a second arc segment with the same diameter as the first chamber;

   The first arc segment and the second arc segment have overlapping segments at both ends along the radial direction of the first chamber; the blocking plates on both sides limit the rolling element and the elastic element to the arc In the space relative to the curved surface, the elastic member can be compressed during the movement of the rolling member along the arcuate surface.
2. The centering device according to claim 1, characterized in that, the arc-shaped surface of the first blocking plate further includes a third arc-shaped segment with the same diameter as the first chamber, including two segments, which are respectively connected to the The ends on both sides of the first arc segment are connected; the two ends of the second arc segment and the third arc segment have coincident segments along the radial direction of the first chamber.
3. The centering device according to claim 2, wherein the arc-shaped surface of the second blocking plate further includes a fourth arc-shaped section whose radius is smaller than the radius of the first chamber, including two sections, which are respectively connected to the Both ends of the second arc segment are connected; both ends of the fourth arc segment and the third arc segment have overlapped segments along the radial direction of the first chamber.
4. The centering device according to claim 3, wherein the arc-shaped surface of the second blocking plate further includes a fifth arc-shaped section with a radius equal to the radius of the first chamber, including two sections, which are respectively connected to the Both ends of the fourth arc segment are connected; both ends of the fifth arc segment and the third arc segment have coincident segments along the radial direction of the first chamber.
5. The centering device according to claim 4, wherein the third arc segment extends to the edge of the first block arc segment, and the fifth arc segment extends to the second block The edge of the arc segment of the plate.
6. The centering device according to any one of claims 2 to 5, characterized in that, the central point of the first arc segment is located at the symmetrical center of the length direction of the first blocking plate, and the second arc segment The center point of the segment is located at the symmetrical center in the length direction of the second blocking plate.
7. The centering device according to claim 1, further comprising:

   Shaft block: including two pieces, respectively installed at both ends of the second chamber, one end of the shaft block is arranged in the second chamber, and the other end of the shaft block is located outside the second chamber, The shaft block can move relative to the second chamber, and the elastic member is restricted between the two shaft blocks;

   The rolling member is a roller, which is pivotally connected to one end of the shaft block located outside the second chamber.
8. The centering device according to claim 7, wherein one end of the shaft block located in the second chamber forms a cavity, and the elastic member is located in the cavity.
9. The centering device according to claim 1, wherein the first installation hole comprises:

   Arc-shaped hole segment: including the upper arc-shaped segment and the lower arc-shaped segment, and the upper and lower arc-shaped segments are non-closed structures;

   Slot section: including a first side slot section and a second side slot section, the first side slot section connects the first side gap between the upper arc section and the lower arc section, and the second side slot section connects the second side clearance of the upper arc segment and the lower arc segment;

   The axial height of the slotted hole segment is greater than the width of the gap between the upper arc segment and the lower arc segment;

   Protruding structures are formed at both ends of the arc-shaped surface of the blocking plate, and are respectively inserted into the first slotted hole section and the second slotted hole section.
10. The centering device according to claim 1, wherein a clamping block is provided on the end surface of the block structure facing the buffer for installation and fixing between the block structure and the buffer.

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