CN212243377U - Stable axle box - Google Patents

Stable axle box Download PDF

Info

Publication number
CN212243377U
CN212243377U CN202020598437.0U CN202020598437U CN212243377U CN 212243377 U CN212243377 U CN 212243377U CN 202020598437 U CN202020598437 U CN 202020598437U CN 212243377 U CN212243377 U CN 212243377U
Authority
CN
China
Prior art keywords
reinforcing ribs
annular groove
strengthening rib
main
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020598437.0U
Other languages
Chinese (zh)
Inventor
丁杰
赵金权
李永康
谢震
刘兴艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Huade Machinery Co ltd
Original Assignee
Changzhou Huade Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Huade Machinery Co ltd filed Critical Changzhou Huade Machinery Co ltd
Priority to CN202020598437.0U priority Critical patent/CN212243377U/en
Application granted granted Critical
Publication of CN212243377U publication Critical patent/CN212243377U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Vehicle Body Suspensions (AREA)

Abstract

The utility model relates to a stable form axle box belongs to axle box technical field, sets up main strengthening rib under the dead eye, and main strengthening rib sets up along the axial direction of dead eye, and the setting of main strengthening rib can increase the casing thickness below the dead eye along the axial direction of dead eye, and support intensity strengthens; connecting reinforcing ribs are arranged right below the joint of the bearing hole and the spring seat, and the thickness of a shell at the joint of the bearing hole and the spring seat is increased by the connecting reinforcing ribs; auxiliary reinforcing ribs are arranged in the middle position right below the spring seat, the auxiliary reinforcing ribs increase the supporting strength of the spring seat, and the spring seat is not easy to deform; use horizontal strengthening rib at last to connect main strengthening rib, connect strengthening rib and vice strengthening rib, main strengthening rib, connect strengthening rib and vice strengthening rib reinforcing the utility model discloses the intensity of vertical direction, horizontal strengthening rib reinforcing the utility model discloses the intensity of horizontal direction can prevent effectively that the shell from warping, has guaranteed the transmission of automobile body weight and load.

Description

Stable axle box
Technical Field
The utility model belongs to the technical field of the axle box technique and specifically relates to a stable form axle box is related to.
Background
In railway locomotives and vehicles, the components that are sleeved on the axle journals and used for connecting the wheel sets and the bogie (the bogie is the running part of a railway vehicle) framework or the body of a two-axle vehicle, referred to as axle boxes for short (the axle boxes are the bearing and positioning devices between the bogie wheel set bearings and the framework), have the functions of transferring the weight and the load of the vehicle body to the wheel sets, lubricating the axle journals, reducing friction and reducing running resistance. The strength of the traditional axle box is low, when the weight of the vehicle body and the load are transferred to the wheel pair, the axle box is easy to deform, and the transfer of the weight of the vehicle body and the load is influenced after the axle box deforms.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to overcome the problem that the strength of a traditional axle box is low, when the weight of a vehicle body and load are transferred to a wheel pair, the axle box is easy to deform, and the transfer of the weight of the vehicle body and the load is influenced after the axle box is axially deformed, and the stable axle box is provided.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a stable form axle box, includes the casing, the dead eye has been seted up on the casing, the both sides in dead eye on the casing all are provided with the spring holder, the below of casing is provided with the supporting part, the supporting part includes:
main reinforcing ribs: the main reinforcing ribs are positioned right below the bearing hole and arranged along the axial direction of the bearing hole;
connecting the reinforcing ribs: the connecting reinforcing ribs are positioned right below the joints of the bearing holes and the spring seats, and the connecting reinforcing ribs and the main reinforcing ribs are arranged in parallel;
auxiliary reinforcing ribs: the auxiliary reinforcing ribs are positioned in the middle position right below the spring seat, and the auxiliary reinforcing ribs and the main reinforcing ribs are arranged in parallel;
the transverse reinforcing ribs are located in the middle of the supporting portion and are connected with the main reinforcing ribs, the connecting reinforcing ribs and the auxiliary reinforcing ribs, and the transverse reinforcing ribs and the main reinforcing ribs are perpendicular to each other.
The utility model discloses a stable form axle box sets up main strengthening rib under the dead eye, and main strengthening rib sets up along the axial direction of dead eye, and the dead eye is the utility model discloses axial main bearing hole, the setting of main strengthening rib can be followed the axial direction of dead eye and increased the casing thickness below the dead eye, and support intensity strengthens; connecting reinforcing ribs are arranged right below the joint of the bearing hole and the spring seat, the connecting reinforcing ribs increase the thickness of a shell at the joint of the bearing hole and the spring seat, and the spring seat is not easy to bend and deform; auxiliary reinforcing ribs are arranged in the middle position right below the spring seat, the auxiliary reinforcing ribs increase the supporting strength of the spring seat, and the spring seat is not easy to deform; use horizontal strengthening rib at last to connect main strengthening rib, connect strengthening rib and vice strengthening rib, horizontal strengthening rib sets up with main strengthening rib is perpendicular, and main strengthening rib, connection strengthening rib and vice strengthening rib strengthen the utility model discloses the intensity of vertical direction, horizontal strengthening rib reinforcing the utility model discloses the intensity of horizontal direction, the utility model discloses the intensity of supporting part is stronger, can prevent effectively that the shell from warping, has guaranteed the transmission of automobile body weight and load.
In order to facilitate the discharge of accumulated water on the spring seat, two water guide holes communicated with the supporting part are formed in the spring seat, the accumulated water can flow to the supporting part from the water guide holes, and the supporting part is arranged in a suspending mode, so that the accumulated water is discharged.
In order to increase the strength of the spring seat, oblique-pulling reinforcing ribs are fixedly mounted on two sides of the bearing hole in the shell and connected with the spring seat on the same side.
In order to alleviate the utility model discloses an overall mass, it subtracts heavy blind hole to have seted up on the horizontal strengthening rib, it is located between two connection strengthening ribs to subtract heavy blind hole.
In order to further alleviate the utility model discloses an overall mass, it subtracts heavy blind hole to have seted up on the horizontal strengthening rib, it is located between two vice strengthening ribs to subtract heavy blind hole, subtract heavy blind hole and water guide hole intercommunication.
In order to facilitate the installation of the spring on the spring seats, two installation openings are formed in the spring seats, the water guide hole is located in the installation openings, the spring can be installed in the installation openings, and the installation openings provide limitation for the spring.
In order to enable the spring to be compressed and rebounded along the axial direction stably, a guide cylinder is fixedly installed on the installation seat, the guide cylinder and the spring are coaxially arranged, the guide cylinder can provide installation guide for the spring, the spring can be compressed and rebounded along the axial direction stably, a first annular groove is formed in the spring seat in order to facilitate installation of the guide cylinder, the first annular groove surrounds the water guide hole, the first annular groove and the installation opening are coaxially arranged, one end of the guide cylinder is inserted into the first annular groove, the first annular groove can provide limiting and fixing for the spring, and installation of the guide cylinder is rapid and firm.
In order to make the utility model discloses better use with the cooperation of pneumatic sealing ring, second annular groove and third annular groove have been seted up on the casing, second annular groove and third annular groove all with the coaxial setting of dead eye, the outer radius of second annular groove is less than the inner radius of third annular groove. Second annular groove and third annular groove all are used for holding the female head of pneumatic sealing ring, and pneumatic sealing ring installs epaxially, and the coaxial inserting of axle is established in the bearing hole, and the axle rotates the back, and pneumatic sealing ring's female head forms sealedly between second annular groove and third annular groove at second annular groove and third annular groove internal rotation, pneumatic sealing ring female head and second annular groove and third annular groove, has strengthened the utility model discloses a sealing performance.
The utility model has the advantages that the stable axle box of the utility model is provided with the main reinforcing rib under the bearing hole, the main reinforcing rib is arranged along the axial direction of the bearing hole, the bearing hole is the main bearing hole of the utility model, the arrangement of the main reinforcing rib can increase the thickness of the shell under the bearing hole along the axial direction of the bearing hole, and the supporting strength is enhanced; connecting reinforcing ribs are arranged right below the joint of the bearing hole and the spring seat, the connecting reinforcing ribs increase the thickness of a shell at the joint of the bearing hole and the spring seat, and the spring seat is not easy to bend and deform; auxiliary reinforcing ribs are arranged in the middle position right below the spring seat, the auxiliary reinforcing ribs increase the supporting strength of the spring seat, and the spring seat is not easy to deform; use horizontal strengthening rib at last to connect main strengthening rib, connect strengthening rib and vice strengthening rib, horizontal strengthening rib sets up with main strengthening rib is perpendicular, and main strengthening rib, connection strengthening rib and vice strengthening rib strengthen the utility model discloses the intensity of vertical direction, horizontal strengthening rib reinforcing the utility model discloses the intensity of horizontal direction, the utility model discloses the intensity of supporting part is stronger, can prevent effectively that the shell from warping, has guaranteed the transmission of automobile body weight and load.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a three-dimensional schematic diagram of embodiment 1 of the present invention;
fig. 2 is a three-dimensional schematic view of another perspective of embodiment 1 of the present invention;
fig. 3 is a bottom view of embodiment 1 of the present invention;
fig. 4 is a three-dimensional schematic diagram of embodiment 2 of the present invention;
fig. 5 is a bottom view of embodiment 2 of the present invention;
fig. 6 is a three-dimensional schematic diagram of embodiment 3 of the present invention;
fig. 7 is a bottom view of embodiment 3 of the present invention;
fig. 8 is a three-dimensional schematic diagram of embodiment 4 of the present invention;
fig. 9 is a three-dimensional schematic diagram of embodiment 5 of the present invention;
fig. 10 is a three-dimensional schematic diagram of embodiment 6 of the present invention.
In the figure: 1. the novel bearing comprises a shell, 2 parts of bearing holes, 3 parts of a spring seat, 4 parts of main reinforcing ribs, 5 parts of connecting reinforcing ribs, 6 parts of auxiliary reinforcing ribs, 7 parts of transverse reinforcing ribs, 7-1 parts of weight-reducing blind holes, 8 parts of water guide holes, 9 parts of mounting openings, 10 parts of first annular grooves, 11 parts of second annular grooves, 12 parts of third annular grooves and 13 parts of diagonal reinforcing ribs.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Example 1:
as shown in fig. 1 and 2, the stable axle box includes a housing 1, a bearing hole 2 is formed on the housing 1, spring seats 3 are respectively disposed on two sides of the bearing hole 2 on the housing 1, water guide holes 8 communicated with a support portion are respectively formed on the two spring seats 3, accumulated water can flow from the water guide holes 8 to the support portion, and the support portion is suspended in the air, so that the accumulated water is discharged; the equal fixed mounting in both sides of bearing hole 2 on casing 1 has oblique reinforcing bar 13 to one side, and the homonymy spring holder 3 is connected to oblique reinforcing bar 13 to one side, and in order not to influence the installation of internal spring, the oblique reinforcing bar 13 of homonymy has two, and two oblique reinforcing bar 13 of homonymy are located the both ends of bearing hole 2 respectively.
The below of casing 1 is provided with the supporting part, and the supporting part includes:
main reinforcing ribs 4: the main reinforcing ribs 4 are positioned right below the bearing hole 2 and are arranged along the axial direction of the bearing hole 2;
connecting reinforcing ribs 5: the connecting reinforcing ribs 5 are positioned right below the joint of the bearing hole 2 and the spring seat 3, the connecting reinforcing ribs 5 are arranged in parallel with the main reinforcing ribs 4, and because the number of the spring seats 3 is two, the number of the corresponding connecting reinforcing ribs 5 is also two;
auxiliary reinforcing ribs 6: the auxiliary reinforcing ribs 6 are positioned in the middle position right below the spring seat 3, the auxiliary reinforcing ribs 6 are arranged in parallel with the main reinforcing ribs 4, and because the spring seat 3 is provided with two auxiliary reinforcing ribs 6, the number of the corresponding auxiliary reinforcing ribs 6 is also two;
the transverse reinforcing ribs 7 are located in the middle of the supporting portion, the transverse reinforcing ribs 7 are connected with the main reinforcing ribs 4, the connecting reinforcing ribs 5 and the auxiliary reinforcing ribs 6, and as shown in fig. 3, the transverse reinforcing ribs 7 are perpendicular to the main reinforcing ribs 4.
The utility model discloses a stable form axle box sets up main strengthening rib 4 under dead eye 2, and main strengthening rib 4 sets up along dead eye 2's axial direction, and dead eye 2 is the utility model discloses axial main bearing hole, the setting of main strengthening rib can be along dead eye 2's axial direction increase dead eye 2 below casing 1 thickness, support intensity reinforcing; a connecting reinforcing rib 5 is arranged right below the joint of the bearing hole 2 and the spring seat 3, the thickness of the shell 1 at the joint of the bearing hole 2 and the spring seat 3 is increased by the connecting reinforcing rib 5, and the spring seat 3 is not easy to bend and deform; auxiliary reinforcing ribs 6 are arranged in the middle position right below the spring seat 3, the auxiliary reinforcing ribs 6 increase the supporting strength of the spring seat 3, and the spring seat 3 is not easy to deform; use horizontal strengthening rib 7 at last to connect main strengthening rib 4, connect strengthening rib 5 and vice strengthening rib 6, horizontal strengthening rib 7 sets up with main strengthening rib 4 is perpendicular, and main strengthening rib 4, connection strengthening rib 5 and the enhancement of vice strengthening rib 6 the utility model discloses the intensity of vertical direction, horizontal strengthening rib 7 reinforcing the utility model discloses the intensity of horizontal direction, the utility model discloses the intensity of supporting part is stronger, can effectively prevent that the shell from warping, has guaranteed the transmission of automobile body weight and load.
Example 2:
in order to reduce the overall mass of the present invention, embodiment 2 as shown in fig. 4 and 5 differs from embodiment 1 only in that: the transverse reinforcing ribs 7 are provided with weight-reducing blind holes 7-1, and the weight-reducing blind holes 7-1 are positioned between the two connecting reinforcing ribs 5.
Example 3:
in order to further reduce the overall mass of the present invention, example 3, as shown in fig. 6 and 7, differs from example 2 only in that: the transverse reinforcing ribs 7 are provided with weight reducing blind holes 7-1, the weight reducing blind holes 7-1 are positioned between the two auxiliary reinforcing ribs 6, and the weight reducing blind holes 7-1 are communicated with the water guide holes 8.
Example 4:
to facilitate mounting of the spring on the spring seat 3, embodiment 4 shown in fig. 8 differs from embodiment 1 only in that: all seted up installing opening 9 on two spring holders 3, water guide hole 8 is located installing opening 9, and the spring can be installed in installing opening 9, and installing opening 9 provides spacingly for the spring.
First annular groove 10 has all been seted up on two spring holders 3, and first annular groove 10 surrounds water guide hole 8, and first annular groove 10 sets up with installation opening 9 is coaxial, and the one end of guide cylinder is inserted and is established in first annular groove 10, and first annular groove 10 can provide spacing and fixed for the spring, makes the installation of guide cylinder comparatively swift, firm.
A second annular groove 11 and a third annular groove 12 are formed in the shell 1, the second annular groove 11 and the third annular groove 12 are coaxially arranged with the bearing hole 2, and the outer radius of the second annular groove 11 is smaller than the inner radius of the third annular groove 12. Second annular groove 11 and third annular groove 12 all are used for holding the female head of pneumatic sealing ring, and pneumatic sealing ring installs epaxially, and the coaxial inserting of axle is established in dead eye 2, and the back is rotated to the axle, and pneumatic sealing ring's female head forms sealedly between second annular groove 11 and third annular groove 12 at second annular groove 11 and third annular groove 12 internal rotation, pneumatic sealing ring female head and second annular groove 11 and third annular groove 12, have strengthened the utility model discloses a sealing performance.
Example 5:
to facilitate mounting of the spring on the spring seat 3, embodiment 5 shown in fig. 9 differs from embodiment 2 only in that: all seted up installing opening 9 on two spring holders 3, water guide hole 8 is located installing opening 9, and the spring can be installed in installing opening 9, and installing opening 9 provides spacingly for the spring.
First annular groove 10 has all been seted up on two spring holders 3, and first annular groove 10 surrounds water guide hole 8, and first annular groove 10 sets up with installation opening 9 is coaxial, and the one end of guide cylinder is inserted and is established in first annular groove 10, and first annular groove 10 can provide spacing and fixed for the spring, makes the installation of guide cylinder comparatively swift, firm.
A second annular groove 11 and a third annular groove 12 are formed in the shell 1, the second annular groove 11 and the third annular groove 12 are coaxially arranged with the bearing hole 2, and the outer radius of the second annular groove 11 is smaller than the inner radius of the third annular groove 12. Second annular groove 11 and third annular groove 12 all are used for holding the female head of pneumatic sealing ring, and pneumatic sealing ring installs epaxially, and the coaxial inserting of axle is established in dead eye 2, and the back is rotated to the axle, and pneumatic sealing ring's female head forms sealedly between second annular groove 11 and third annular groove 12 at second annular groove 11 and third annular groove 12 internal rotation, pneumatic sealing ring female head and second annular groove 11 and third annular groove 12, have strengthened the utility model discloses a sealing performance.
Example 6:
to facilitate mounting of the spring on the spring seat 3, embodiment 6 shown in fig. 10 differs from embodiment 3 only in that: all seted up installing opening 9 on two spring holders 3, water guide hole 8 is located installing opening 9, and the spring can be installed in installing opening 9, and installing opening 9 provides spacingly for the spring.
First annular groove 10 has all been seted up on two spring holders 3, and first annular groove 10 surrounds water guide hole 8, and first annular groove 10 sets up with installation opening 9 is coaxial, and the one end of guide cylinder is inserted and is established in first annular groove 10, and first annular groove 10 can provide spacing and fixed for the spring, makes the installation of guide cylinder comparatively swift, firm.
A second annular groove 11 and a third annular groove 12 are formed in the shell 1, the second annular groove 11 and the third annular groove 12 are coaxially arranged with the bearing hole 2, and the outer radius of the second annular groove 11 is smaller than the inner radius of the third annular groove 12. Second annular groove 11 and third annular groove 12 all are used for holding the female head of pneumatic sealing ring, and pneumatic sealing ring installs epaxially, and the coaxial inserting of axle is established in dead eye 2, and the back is rotated to the axle, and pneumatic sealing ring's female head forms sealedly between second annular groove 11 and third annular groove 12 at second annular groove 11 and third annular groove 12 internal rotation, pneumatic sealing ring female head and second annular groove 11 and third annular groove 12, have strengthened the utility model discloses a sealing performance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (8)

1. The utility model provides a stable form axle box, includes casing (1), dead eye (2) have been seted up on casing (1), the both sides of dead eye (2) on casing (1) all are provided with spring holder (3), its characterized in that: a support portion is provided below the housing (1), the support portion including:
main reinforcing bars (4): the main reinforcing ribs (4) are positioned right below the bearing hole (2) and are arranged along the axial direction of the bearing hole (2);
connecting reinforcing ribs (5): the connecting reinforcing ribs (5) are positioned right below the joints of the bearing holes (2) and the spring seats (3), and the connecting reinforcing ribs (5) are arranged in parallel with the main reinforcing ribs (4);
secondary reinforcing ribs (6): the auxiliary reinforcing ribs (6) are positioned in the middle position right below the spring seat (3), and the auxiliary reinforcing ribs (6) are arranged in parallel with the main reinforcing ribs (4);
transverse reinforcing ribs (7), the transverse reinforcing ribs (7) are located at the middle positions of the supporting portions, the transverse reinforcing ribs (7) are connected with the main reinforcing ribs (4), the connecting reinforcing ribs (5) and the auxiliary reinforcing ribs (6), and the transverse reinforcing ribs (7) are perpendicular to the main reinforcing ribs (4).
2. A stabilized axle housing according to claim 1, wherein: and the two spring seats (3) are provided with water guide holes (8) communicated with the supporting parts.
3. A stabilized axle housing according to claim 1, wherein: the bearing device is characterized in that oblique-pulling reinforcing ribs (13) are fixedly mounted on two sides of the bearing hole (2) in the shell (1), and the oblique-pulling reinforcing ribs (13) are connected with the spring seats (3) on the same side.
4. A stabilized axle housing according to claim 2, wherein: and the transverse reinforcing ribs (7) are provided with weight reducing blind holes (7-1), and the weight reducing blind holes (7-1) are positioned between the two connecting reinforcing ribs (5).
5. A stabilized axle housing according to claim 2, wherein: the transverse reinforcing ribs (7) are provided with weight reducing blind holes (7-1), the weight reducing blind holes (7-1) are positioned between the two auxiliary reinforcing ribs (6), and the weight reducing blind holes (7-1) are communicated with the water guide holes (8).
6. The stabilized axle housing of claim 5, wherein: two all seted up installation opening (9) on spring holder (3), water guide hole (8) are located installation opening (9).
7. The stabilized axle housing of claim 6, wherein: two first annular grooves (10) have all been seted up on spring holder (3), first annular groove (10) surround water guide hole (8), first annular groove (10) and installation opening (9) coaxial arrangement.
8. The stabilized axle housing of claim 6, wherein: the bearing is characterized in that a second annular groove (11) and a third annular groove (12) are formed in the shell (1), the second annular groove (11) and the third annular groove (12) are coaxially arranged with the bearing hole (2), and the outer radius of the second annular groove (11) is smaller than the inner radius of the third annular groove (12).
CN202020598437.0U 2020-04-20 2020-04-20 Stable axle box Active CN212243377U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020598437.0U CN212243377U (en) 2020-04-20 2020-04-20 Stable axle box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020598437.0U CN212243377U (en) 2020-04-20 2020-04-20 Stable axle box

Publications (1)

Publication Number Publication Date
CN212243377U true CN212243377U (en) 2020-12-29

Family

ID=74003159

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020598437.0U Active CN212243377U (en) 2020-04-20 2020-04-20 Stable axle box

Country Status (1)

Country Link
CN (1) CN212243377U (en)

Similar Documents

Publication Publication Date Title
CN110254455B (en) Rail vehicle and windshield hanging device thereof
CN105377594A (en) Vehicle suspension and leaf spring therefore
CN212243377U (en) Stable axle box
CN103101542A (en) Elastic joint structure suitable for cantilever-type flexible suspension of CRH (China railway high-speed) train traction motor
CN206826390U (en) Engine mounting
CN112549888A (en) Lightweight upper guide beam in trailer air suspension system
CN209977214U (en) Small-size electric motor car differential case box
CN104709077B (en) A kind of electri forklift and its bridge case
CN202689755U (en) Split hinge of van breast board
CN210309819U (en) All-terrain vehicle and balance rod device thereof
CN208646959U (en) Multi-connecting-rod separated suspension slewing journal structure and multi-connecting-rod separated suspension
CN210149101U (en) Plate spring fixing mechanism for overweight vehicle
CN208698781U (en) The centering type single stage suspension and pivoted arm location structure of the suspension type monorail bogie of car
CN207173285U (en) A kind of left front support of engine
CN211032576U (en) Railway vehicle bogie with detachable function
CN111055869B (en) Lightweight axle box built-in primary suspension device and lightweight method
CN203832500U (en) Integrated locating rotation arm used for bogie
CN205736759U (en) A kind of equalizing type of suspension balance shaft assembly
CN114151157B (en) Auxiliary supporting structure of cam shaft
CN219133841U (en) Suspension connection structure and vehicle
CN216691977U (en) Piston assembly for air spring, air spring and vehicle
CN220199295U (en) Railway vehicle and bogie framework and bogie beam assembly thereof
KR200216192Y1 (en) Primary suspension of bogie for rolling stock
CN112124042B (en) Connecting structure of double-air-outlet shell
CN214744008U (en) Special frock of tracheal joint partial shipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant