CN113799830B - Primary suspension device, bogie and rail train - Google Patents
Primary suspension device, bogie and rail train Download PDFInfo
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- CN113799830B CN113799830B CN202110338076.5A CN202110338076A CN113799830B CN 113799830 B CN113799830 B CN 113799830B CN 202110338076 A CN202110338076 A CN 202110338076A CN 113799830 B CN113799830 B CN 113799830B
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- friction
- positioning
- positioning guide
- spring
- guide pillar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
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Abstract
The embodiment of the application provides a primary suspension device, a bogie and a rail train, which belong to the technical field of suspension devices of rail vehicles, wherein the primary suspension device comprises a positioning guide pillar, a positioning spring, a friction inner sleeve and an auxiliary elastic assembly, wherein the positioning spring, the friction inner sleeve and the auxiliary elastic assembly are sequentially sleeved on the positioning guide pillar; a friction outer sleeve is arranged outside the friction inner sleeve; the friction outer sleeve comprises a plurality of friction blocks which are circumferentially arranged on the outer side wall of the friction inner sleeve at intervals; one end and the positioning spring butt of clutch block, the other end and the supplementary elastic component butt of clutch block, supplementary elastic component's elasticity is used in on the clutch block to make the clutch block along its radial extrusion friction endotheca, and the friction endotheca and the laminating of positioning guide pillar. The primary suspension device and the bogie provided in the embodiment of the application can eliminate the abrasion gap between the friction inner sleeve mill and the positioning guide pillar, and can improve the positioning function of the positioning guide pillar, thereby improving the running stability of a vehicle.
Description
Technical Field
The application belongs to the technical field of suspension device design of railway vehicles, and particularly relates to a primary suspension device and a bogie.
Background
With the continuous improvement of railway transportation speed, the requirements of people on the safety and reliability of rail vehicles are higher and higher; the bogie is an important component of a rolling stock and comprises a primary suspension device, a framework and wheel-set axle boxes, and the stability of the rolling stock operation is influenced by positioning and installing the primary suspension device between the framework and the wheel-set axle boxes.
The guide pillar location structure that present common primary suspension positioner adopted mostly is friction formula elastic positioning structure, and the bolt is passed through to friction formula elastic positioning structure's one end and installs on the bogie frame, and the other end is connected with the wheel pair axle box through passing the positioner on the wheel pair axle box to finally transmit wheel rail power for the vehicle.
But at present friction formula guide pillar and the positioner on the wheel pair axle box are mostly clearance fit, and along with the operation wearing and tearing clearance of vehicle will increase, guide pillar locate function weakens, is unfavorable for the operating stability of vehicle.
Disclosure of Invention
The embodiment of the application provides a primary suspension device, bogie and rail train, and it can solve the increase of vehicle operation wearing and tearing clearance and guide pillar locate function weakens to influence the poor problem of operating stability of vehicle.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, an embodiment of the present application provides a primary suspension device, installed between a frame and a wheel-set axle box, including: the positioning spring and the auxiliary elastic component are sleeved on the positioning guide pillar;
one end of the positioning guide pillar is connected with the framework, the other end of the positioning guide pillar extends vertically towards the wheel set axle box, and the positioning spring and the auxiliary elastic assembly are respectively positioned at two ends of the positioning guide pillar;
a friction inner sleeve and a friction outer sleeve are arranged between the positioning spring and the auxiliary elastic assembly, wherein the friction inner sleeve is sleeved on the positioning guide pillar, the friction outer sleeve comprises a plurality of friction blocks, and the friction blocks are arranged on the outer side wall of the friction inner sleeve at intervals along the circumferential direction of the friction inner sleeve;
one end of the friction block is abutted to the positioning spring, the other end of the friction block is abutted to the auxiliary elastic assembly, and the elastic force of the auxiliary elastic assembly acts on the friction block so that the friction block extrudes the friction inner sleeve along the radial direction of the friction block, and the friction inner sleeve is attached to the positioning guide pillar.
In a second aspect, embodiments of the present application provide a bogie including a primary suspension apparatus according to the first aspect.
In a third aspect, the present application provides a rail train, including the bogie described in the second aspect.
Compared with the prior art, the primary suspension device, the bogie and the rail train provided by the embodiment of the application have the advantages that one end of the positioning guide pillar is connected with the frame, and the other end of the positioning guide pillar extends vertically towards the wheel set axle box; the positioning spring, the friction inner sleeve and the auxiliary elastic assembly are sequentially sleeved on the positioning column, the friction inner sleeve is provided with a friction outer sleeve, the friction outer sleeve comprises a plurality of friction blocks, and the friction blocks are arranged on the side wall of the friction inner sleeve at intervals along the circumferential direction of the friction inner sleeve; the top and the supplementary elastic component butt of clutch blocks, the bottom and the setting of clutch blocks are at the location spring butt of wheel pair axle box.
The wheel-rail force generated by the vehicle body is transmitted to the auxiliary elastic assembly and causes the auxiliary elastic assembly to deform, the elastic force of the auxiliary elastic assembly acts on the friction block, and the friction block extrudes the friction inner sleeve along the radial direction of the friction inner sleeve under the action of the elastic force so as to enable the friction inner sleeve to be attached to the positioning guide pillar; the abrasion gap caused by abrasion of the friction inner sleeve can be eliminated, so that the positioning function of the positioning guide pillar is improved, and the running stability of a vehicle is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
Fig. 1 is a schematic structural diagram of a bogie provided in an embodiment of the present application;
FIG. 2 is a schematic view of an overall installation of a positioning device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a positioning device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a positioning guide pillar provided in an embodiment of the present application;
FIG. 5 is a schematic view of a buckle according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of a friction jacket provided in accordance with an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a support ring according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a positioning spring according to an embodiment of the present application.
Description of reference numerals:
1-a series of suspension devices; 11-positioning guide posts; 111-top plate; 112-a first shaft section; 1121 — a first abutment surface; 1122-a second abutment surface; 113-a second shaft section; 1131-card slot; 1132 — anti-drop pin mounting holes;
12-a spring; 13-an auxiliary spring; 14-a retaining ring; 141-a first inner chamfer; 142-an upper end face;
15-a friction block; 151-first outer ramp; 152-a second outer chamfer;
16-friction inner sleeve; 17-a support ring; 171-a support ramp;
18-a positioning spring; 181-a first carrying surface; 182-a second bearing surface; 19-a fastening assembly; 191-an adjusting plate; 192-a locknut; 193-anti-run pin;
2-a framework; 3-wheel-pair axle boxes; 31-a positioning projection; 32-a via hole; 4-a foundation braking device; 5-secondary suspension device; 6-central traction device.
Detailed Description
In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the following description of the exemplary embodiments of the present application with reference to the accompanying drawings is made in further detail, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 3, the present embodiment provides a suspension system 1, which is connected to a frame 2 at one end and to a wheelset axlebox 3 at the other end, and can transmit wheel-rail forces to a vehicle. The primary suspension device 1 comprises a positioning guide post 11, a positioning spring 18, an auxiliary elastic component and a friction inner sleeve 16; wherein, the guide pillar 11 can be vertically set up between framework 2 and wheel pair axle box 3, and the top of guide pillar 11 can be connected with framework 2 fixed connection, and the bottom of guide pillar 11 can extend towards wheel pair axle box 3.
Along the direction from the framework 2 to the wheel set axle box 3, namely along the direction from top to bottom of the positioning guide pillar 11, the auxiliary elastic component, the friction inner sleeve 16 and the positioning spring 18 are sequentially sleeved on the positioning guide pillar 11; the friction inner sleeve 16 is attached to the positioning guide pillar 11, the outer wall of the friction inner sleeve 16 is sleeved with a friction outer sleeve, the friction outer sleeve comprises a plurality of friction blocks 15, and the friction blocks 15 are arranged along the circumferential direction of the outer wall of the friction inner sleeve 16 at intervals; the interval between the adjacent two friction blocks 15 may be equal.
The positioning spring 18 can be installed on the wheelset axle box 3, the top end of the friction block 15 abuts against the bottom end of the auxiliary elastic component, the bottom end of the friction block 15 abuts against the positioning spring, wherein the top end of the auxiliary elastic component can abut against the positioning guide post 11, under the action of the elastic force of the auxiliary elastic component, the friction block 15 can convert the elastic force into extrusion force along the radial direction of the auxiliary elastic component, and the extrusion force acts on the friction inner sleeve 16, so that the friction inner sleeve 16 is kept attached to the positioning guide post 11.
The utility model provides a primary suspension device, because the friction overcoat includes a plurality of clutch blocks 15, the friction overcoat that a plurality of clutch blocks 15 formed is constantly changed at its inner diameter under the effect of above-mentioned extrusion force, the friction overcoat can provide the extrusion force for friction overcoat 16 all the time promptly to can eliminate the wearing and tearing clearance between friction overcoat 16 and the location guide pillar 11, thereby promote the locate function of location guide pillar, and promote vehicle operating stability.
Further, the suspension device provided by the embodiment of the application further comprises a spring 12, and the auxiliary elastic assembly comprises an auxiliary spring 13 and a retaining ring 14; the positioning guide post 11 is used for sleeving a tie spring 12 and an auxiliary spring 13, and the tie spring 12 and the auxiliary spring 13 are installed between the wheelset axle box 3 and the frame 2 in a vertical state. The top end of the positioning guide post 11 is fixedly connected with the framework 2, and the bottom end of the positioning guide post 11 extends vertically towards the wheelset axle box 3. In some embodiments, the wheelset axle housing 3 is provided with a through hole 32 for the positioning guide post 11 to pass through, and the bottom end of the positioning guide post 11 is a free end and can be inserted into the wheelset axle housing 3.
The first spring 12 and the auxiliary spring 13 are respectively sleeved on the positioning guide post 11, the first spring 12 is positioned outside the auxiliary spring 13, one end of the positioning guide post 11 close to the framework 2 is provided with a butting surface for butting against the auxiliary spring 13 and the first spring 12, and the top ends of the first spring 12 and the auxiliary spring 13 are respectively butted against the butting surface.
As shown in fig. 4, the positioning guide pillar 11 provided by the embodiment of the present application includes a top plate 111 and a pillar located at one side of the top plate 111, the pillar includes a first shaft section 112 and a second shaft section 113, and the first shaft section 112 is disposed near the top plate 111; the first shaft section 112 is used for sleeving a tie spring 12 and an auxiliary spring 13. The second shaft section 113 is used for sleeving the friction inner sleeve 16, wherein the first shaft section 112 is provided with a first abutting surface 1121 and a second abutting surface 1122, the first abutting surface 1121 is closer to the top plate 111 than the second abutting surface 1122, the first abutting surface 1121 is used for abutting against the primary spring 12, and the second abutting surface 1122 is used for abutting against the auxiliary spring 13.
Specifically, the top plate 111 may be a rectangular plate, the top plate 111 is provided with mounting holes into which fastening bolts are inserted, and the top plate 111 may be mounted on the frame 2 by the fastening bolts, thereby fixing the top ends of the positioning guide pillars 11 to the frame 2. One end of the first shaft segment 112 is connected to the top plate 111, and a side surface of the top plate 111 facing the top plate 111 can be used as a first abutting surface 1121; the first shaft segment 112 may be a stepped shaft and have a stepped surface; this step surface serves as a second contact surface 1122.
In addition, the shaft diameter of the first shaft section 112 may be larger than the shaft diameter of the second shaft section 113, so as to form a limiting surface at the transition of the first shaft section 112 and the second shaft section 113, and when the friction inner sleeve 16 is sleeved to the second shaft section 113 of the positioning guide pillar 11, the top of the friction inner sleeve 16 may abut against the limiting surface; namely, the top end of the friction inner sleeve 16 abuts on the transition of the first shaft section 112 and the second shaft section 113; the bottom end of the friction inner sleeve 16 can be positioned by the fastening assembly 19 and the friction inner sleeve 16 is attached to the second shaft section 113, as shown in FIG. 3.
The bottom end of the auxiliary spring 13 abuts against a retaining ring 14, that is, the retaining ring 14 is arranged between the auxiliary spring 13 and the friction sleeve 16, and the retaining ring 14 is fastened at the top end of each friction block 15. The retaining ring 14 abuts against the top end of the friction block 15, and the abutting surface formed between the retaining ring 14 and each friction block 15 is an inclined surface, so that the elastic force acting on the auxiliary spring 13 is converted into a pressing force along the radial direction of the friction block through the abutting inclined surface, and the friction block 15 can press the inner friction sleeve 16, so that the inner friction sleeve 16 is kept attached to the positioning guide post 11.
As shown in fig. 5, the retaining ring 14 is an annular structure, and the retaining ring 14 is sleeved on the positioning guide post 11; the upper end of the retaining ring 14 has an upper end surface 142, and the upper end surface 142 is used for abutting against the auxiliary spring 13; the retaining ring 14 further has a first inner inclined surface 141, the first inner inclined surface 141 is used for abutting against the top end of the friction block 15, and the top end of the friction block 15 is provided with an inclined surface matched with the top end of the friction block; the retaining ring 14 can be pressed on the top end of the friction block 15 through the first inner inclined surface 141, the elastic force generated by the auxiliary spring 13 acts on the upper end surface 142 of the retaining ring 14, and is transmitted to the friction block 15 through the first inner inclined surface 141, and the friction block 15 is pressed; since the friction inner sleeve 16 is attached to the friction block 15, the friction block can press the friction inner sleeve 16 to eliminate the wear gap between the friction inner sleeve 16 and the positioning guide post 11.
As shown in fig. 6, the friction jacket provided by the embodiment of the present application includes a plurality of friction blocks 15, each friction block 15 includes a first outer inclined surface 151 and a second outer inclined surface 152, the first outer inclined surface 151 is located at the top end of the friction block 15, that is, the first outer inclined surface 151 and the first inner inclined surface 141 are cooperatively arranged, so that the first inner inclined surface 141 through which the retaining ring 14 passes is pressed against the first outer inclined surface 151 of the friction block 15.
The top ends of a plurality of friction blocks 15 are connected to the same retaining ring 14; for example, the friction inner 16 of the present embodiment is provided with four friction blocks 15 on the outer side, the four friction blocks 15 can be arranged at equal intervals along the circumferential direction of the friction inner 16, and the gap between two adjacent friction inner 16 can be adjusted according to the elastic force borne by the snap ring 14, that is, the gap between two adjacent friction inner 16 can be adjusted according to the change of the weight of the vehicle, so as to adjust the friction force between the friction inner 16 and the friction blocks 15.
As shown in fig. 7, the primary suspension device provided in the embodiment of the present application further includes a support ring 17, which is sleeved on the positioning guide post 11 and mounted on the positioning spring 18 located below the support ring, and is capable of transmitting the wheel-rail force distributed on the support ring 17 to the positioning spring 18 and further transmitting the wheel-rail force to the wheel-pair axle box 3.
The support ring 17 is located the bottom of clutch blocks 15, and the support ring 17 includes path segment and major diameter section, and the major diameter section is used for being connected with clutch blocks 115, and the major diameter section is provided with support inclined plane 171, and supports inclined plane 171 and be located the medial surface of major diameter section. The support ring 17 is inserted into the positioning spring 18 through the small diameter section thereof, and is mounted on the positioning spring 18 through an abutting surface formed at the transition of the large diameter section and the small diameter section. The top of the support ring 17 abuts the second outer inclined surface 152 at the bottom end of the friction block 15 via the support inclined surface 171 to provide support for the bottom end of the friction block 15. The friction block 15 can extrude the friction inner sleeve 16 under the action of the support ring 17, so that the friction inner sleeve 16 is attached to the positioning guide post 11, and the abrasion gap between the friction inner sleeve 16 and the positioning guide post 11 is eliminated.
In the embodiment of the present application, the auxiliary spring 13 abuts against the retaining ring 14, the retaining ring 14 can transmit the elastic force thereof to the friction outer sleeve 15, the friction outer sleeve 15 abuts against the support ring 17 and the friction inner sleeve 16 in an inclined plane manner, and the friction inner sleeve 16 can be pressed to be attached to the positioning guide post 11. After the friction inner sleeve 16 is worn, the friction surface between the friction inner sleeve 16 and the positioning guide post 11 can still keep gapless fit, so that the positioning function of the positioning guide post 11 is improved, and the running stability of the vehicle is improved. Meanwhile, the pressure between the friction surfaces between the inner friction sleeve 16 and the positioning guide post 11 can be adjusted according to the change of the weight of the vehicle, so that a series of friction damping effects are realized, the arrangement of a series of oil pressure shock absorbers can be reduced, and the manufacturing cost of the vehicle is reduced.
On the basis of the above embodiments, the positioning spring 18 provided in the embodiments of the present application is used to bear the support ring 17, and the positioning spring 18 is mounted to the wheel-set axle box 3 through the positioning structure on the surface of the wheel-set axle box 3, so as to position the whole primary suspension device 1 and prevent the primary suspension device 1 from shaking during the operation of the vehicle.
Specifically, the bottom end of the primary spring 12 abuts against the positioning spring 18, the positioning spring 18 is disposed on the surface of the wheelset axle box 3 along the circumferential direction of the through hole 32, and the positioning spring 18 cooperates with the positioning structure provided on the wheelset axle box 3, so that the positioning spring 18 is positionally mounted on the surface of the wheelset axle box 3.
A bearing surface of the positioning spring 18 is used for bearing a tie spring 12, so that the bottom end of the tie spring 12 is abutted against the positioning spring 18; that is, in the embodiment of the present invention, a part of the wheel-rail force can be transmitted to the positioning guide post 11 through the frame 2 and transmitted to the wheel-set axle box 3 through the series of springs 12, so that the wheel-rail force is transmitted to the wheel-set axle box 3, and the impact of the wheel-rail force on the vehicle is effectively reduced.
The positioning spring 18 includes a rubber body and a bearing frame, and the bearing frame is embedded in the rubber body to enhance the structural strength of the positioning spring 18. The rubber body is used for bearing the support ring 17 and the series of springs 12, the support ring 17 and the series of springs 12 are metal pieces, the rubber body is installed on the wheel set axle box 3, and the rubber body is sleeved on the positioning guide pillar 11 and keeps a gap with the positioning guide pillar 11. So set up, can prevent effectively that the electric current in the automobile body from passing to the wheel pair axle box 3 inside from framework 2 to the protection is located the bearing in wheel pair axle box 3 and is not aroused the damage by the electric current, reduces vehicle operation maintenance cost.
Referring to fig. 3, a positioning groove is formed in the bottom of the rubber body, a positioning protrusion 31 is formed on a surface of the wheel-set axle box 3 facing the positioning spring 18, and the positioning spring 18 can be mounted on the positioning protrusion 31 of the wheel-set axle box 3 through the positioning groove, so that the positioning spring 18 is mounted on the wheel-set axle box 3 in a positioning manner. Further, the positioning protrusion 31 may be annularly arranged around the through hole 32 of the wheel-set axle box 3, and correspondingly, the positioning groove is an annular groove provided at the bottom of the rubber body.
As shown in fig. 8, the rubber body further has a first bearing surface 181 and a second bearing surface 182, a stepped hole is formed inside the rubber body to form the first bearing surface 181 and the second bearing surface 182, the first bearing surface 181 is located above the second bearing surface 182, the first bearing surface 181 is used for abutting against the primary spring 12, the second bearing surface 182 is used for bearing the support ring 17, and an abutting surface formed by the large diameter section and the small diameter section of the support ring 17 abuts against the second bearing surface 182.
In the embodiment of the application, part of the wheel-rail force acts on the positioning spring 18 through a series of springs 12 and is transmitted to the wheelset axle box 3 through the positioning spring 18; part of wheel-rail force is transmitted to the retaining ring 14 through the auxiliary spring 13 and is transmitted to the friction outer sleeve 15 through the retaining ring 14, and two ends of the friction outer sleeve 15 are provided with inclined planes which can convert acting force transmitted to the friction outer sleeve 15 into extrusion force along the axial direction of the friction outer sleeve; the support ring 17 is abutted against the positioning spring 18, and the positioning spring 18 provides a supporting force for the support ring 17, so that the friction outer sleeve 15 presses the friction inner sleeve 16, the friction inner sleeve 16 is attached to the positioning guide post 11, and a friction gap between the friction inner sleeve 16 and the positioning guide post 11 caused by friction loss is eliminated.
In another embodiment of the present application, the second shaft section 113 of the positioning guide pillar 11 is further provided with a fastening assembly 19, and the fastening assembly 19 is adjustably mounted on the second shaft section 113 and limits the bottom end of the friction inner sleeve 16. The fastening assembly includes an adjustment plate 191, the adjustment plate 191 being adjustably mounted on the second axle section 113, the adjustment plate 191 being located within the wheel-set axle housing 3. The wheelset axle box 3 has an installation space for installing the adjusting plate 191, the upper surface of the wheelset axle box 3 is provided with a through hole 32, the bottom end of the positioning guide post 11 is inserted into the wheelset axle box 3, and a gap is kept between the positioning guide post 11 and the through hole 32; the adjusting plate 191 is mounted on the positioning guide post 11 and is located in the wheel-set axle box 3.
One side of the adjusting plate 191 can be abutted against the friction inner sleeve 16 and is used for limiting the bottom end of the friction inner sleeve 16; the size of the adjusting plate 191 can be larger than that of the through hole 32, that is, when the frame 2 is lifted, the positioning guide post 11 can move upwards along the through hole 32, and the adjusting plate 191 can be attached to the upper surface of the wheelset axle box 3 and can be lifted together with the positioning guide post 11; the whole lifting of the bogie can be realized by the arrangement.
Further, see fig. 3 and 4; the fastening assembly 19 provided by the embodiment of the present application further includes a locknut 192 and a drop-proof pin 193 disposed on the positioning guide pillar 11; the locknut 192 and the anti-drop pin 193 are respectively located in the wheelset axle box 3, and prevent the adjustment plate 191 from dropping off the positioning guide post 11.
Specifically, the positioning guide pillar 11 is provided with a clamping groove 1131 near the bottom end thereof, the clamping groove 1131 is arranged on the side surface of the second shaft section 113 along the circumferential direction thereof, and the clamping groove 1131 is used for clamping the adjusting plate 191; the side of the clamping groove 1131 of the positioning guide pillar 11 to the end surface of the bottom end thereof is provided with a threaded section, the threaded section is provided with an external thread, and the locknut 192 is installed on the threaded section, that is, the locknut 192 is located on the side of the adjusting plate 191 far away from the through hole 32 in the embodiment of the present application, so as to prevent the adjusting plate 191 from falling off from the positioning guide pillar 11.
And a separation-preventing pin mounting hole 1132 is further arranged at a position, closer to the bottom end, of the threaded section, the separation-preventing pin mounting hole 1132 is used for inserting the separation-preventing pin 193, namely the separation-preventing pin 193 is positioned at one side, far away from the adjusting plate 191, of the locknut 192, and the separation-preventing pin 193 is used for preventing the locknut 192 from falling off the positioning guide post 11.
With continued reference to fig. 3, on the basis of the above embodiment, a lightening hole is further provided in the positioning guide post 11; the lightening holes are located at one end of the positioning guide posts 11 close to the framework 2. Specifically, in order to reduce the overall weight of the primary suspension device 1, the positioning guide post 11 is provided with a lightening hole, which may be located at one end of the positioning guide post 11 close to the frame 2, that is, at the first shaft section 112 of the positioning guide post 11, according to the structural strength of each position of the positioning guide post 11, and one end of the lightening hole may extend to the transition between the first shaft section 112 and the second shaft section 113, and the other end of the lightening hole may penetrate through the top plate 111 of the positioning guide post 11. So set up, under the joint strength who guarantees guide pillar 11 and framework 2, can lighten primary suspension device 1's weight to lighten the whole weight of bogie, with the lightweight design demand that satisfies rail vehicle.
In traditional scheme, the positioner on friction formula guide pillar and the wheel pair axle box is mostly clearance fit, and along with the operation wearing and tearing clearance of vehicle will increase, guide pillar locate function weakens, is unfavorable for the operating stability of vehicle. And the friction performance will be unstable after the clearance increases, resulting in unstable vertical damping of the bogie, and the vehicle performance becomes worse. To solve this problem, some solutions add a series of oleo dampers to make up for the deficiencies in the above solutions.
The technical scheme adopted by the application can automatically eliminate the gap between the positioning guide pillar and the friction inner sleeve, so that the friction damping exists stably, and the friction damping can be adjusted along with the weight change of the vehicle, thereby bringing better dynamic performance to the vehicle. Moreover, a series of oil pressure dampers is not required to be added, a series of structure is simplified, accessories are reduced, and manufacturing cost is reduced.
Referring to fig. 1, the embodiment of the present application further provides a bogie, which includes a primary suspension device 1, a frame 2, a wheel-set axle box 3, a foundation brake device 4, a secondary suspension device 5, and a central traction device 6, wherein the frame 2 includes side beams disposed opposite to each other and a cross beam disposed between the two side beams; two sets of wheel sets are symmetrically arranged on the inner sides of the side beams of the framework 2, each set of wheel set comprises a pair of wheel set axle boxes 3, the wheel set axle boxes 3 are positioned on the inner sides of the wheel sets, and a primary suspension device 1 is arranged between the wheel set axle boxes 3 and the framework 2; the secondary suspension device 5 is arranged above the side beam of the framework 2 and between the vehicle body; a central traction unit 6 is mounted between the frame 2 and the vehicle body and a foundation brake 4 is mounted between the bottom of the cross beam of the frame 2 and the wheel-set axle boxes 3.
The bogie that this application embodiment provided, its a suspension device includes: one end of the positioning guide pillar 11 is connected with a framework, and the other end of the positioning guide pillar extends vertically towards the wheel set axle box; the positioning spring, the friction inner sleeve and the auxiliary elastic assembly are sequentially sleeved on the positioning column, the friction inner sleeve is provided with a friction outer sleeve, the friction outer sleeve comprises a plurality of friction blocks, and the friction blocks are arranged on the side wall of the friction inner sleeve at intervals along the circumferential direction of the friction inner sleeve; the top and the supplementary elastic component butt of clutch blocks, the bottom and the setting of clutch blocks are at the location spring butt of wheel pair axle box.
The wheel-rail force generated by the vehicle body is transmitted to the auxiliary elastic assembly and causes the auxiliary elastic assembly to deform, the elastic force of the auxiliary elastic assembly acts on the friction block, and the friction block extrudes the friction inner sleeve along the radial direction of the friction inner sleeve under the action of the elastic force so as to enable the friction inner sleeve to be attached to the positioning guide pillar; the abrasion gap caused by abrasion of the friction inner sleeve can be eliminated, so that the positioning function of the positioning guide pillar is improved, and the running stability of a vehicle is improved.
In addition, this application embodiment still provides a rail train, and it includes above-mentioned bogie.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A primary suspension system mounted between a frame and a wheelset axle housing, comprising: the positioning device comprises a positioning guide post, a positioning spring sleeved on the positioning guide post and an auxiliary elastic component;
one end of the positioning guide pillar is connected with the framework, the other end of the positioning guide pillar extends vertically towards the wheel set axle box, and the positioning spring and the auxiliary elastic assembly are respectively positioned at two ends of the positioning guide pillar;
a friction inner sleeve and a friction outer sleeve are arranged between the positioning spring and the auxiliary elastic assembly, wherein the friction inner sleeve is sleeved on the positioning guide pillar, the friction outer sleeve comprises a plurality of friction blocks, and the friction blocks are arranged on the outer side wall of the friction inner sleeve at intervals along the circumferential direction of the friction inner sleeve;
one end of the friction block is abutted with the positioning spring, the other end of the friction block is abutted with the auxiliary elastic component, and the elastic force of the auxiliary elastic component acts on the friction block so that the friction block extrudes the inner friction sleeve along the radial direction of the friction block, and the inner friction sleeve is attached to the positioning guide pillar;
also comprises a series of springs sleeved on the positioning guide posts;
one end of the primary spring is abutted against the top end of the positioning guide pillar, and the other end of the primary spring is abutted against the positioning spring;
the positioning guide column comprises a mounting plate and a column body, wherein the mounting plate is positioned at the top of the column body and is used for fixing the positioning guide column to the framework;
the column body comprises a first shaft section and a second shaft section, and the first shaft section is provided with a butting surface for butting against the auxiliary elastic component; the primary spring is sleeved on the outer side of the auxiliary elastic component and abuts against the mounting plate;
the top end of the friction inner sleeve is abutted against the transition position of the first shaft section and the second shaft section.
2. The primary suspension apparatus of claim 1, wherein the secondary elastic assembly comprises a secondary spring and a retaining ring sleeved on the positioning guide post;
one end of the auxiliary spring is abutted against the top end of the positioning guide pillar, and the other end of the auxiliary spring is abutted against the retaining ring;
the retaining ring is located above the friction blocks, the retaining ring is abutted to the end portions of the friction blocks, and the formed abutting surfaces are inclined planes.
3. The primary suspension system of claim 2, wherein the top end of the friction block is provided with a first outboard bevel and the bottom end of the friction block is provided with a second outboard bevel;
the retaining ring is provided with an upper end face and a first inner side inclined face, the auxiliary spring is abutted against the upper end face, and the first inner side inclined face is attached to the first outer side inclined face;
the positioning guide post is sleeved with a support ring, and the support ring is installed on the positioning spring;
one side of the support ring, which faces the friction block, is provided with a support inclined plane, and the support inclined plane is attached to the second outer side inclined plane.
4. The primary suspension system of claim 3, wherein the positioning spring comprises a rubber body and a load-bearing skeleton embedded in the rubber body;
the rubber body is provided with a first bearing surface and a second bearing surface, the first bearing surface is abutted to the first series of springs, and the second bearing surface is used for installing the support ring.
5. The primary suspension system according to claim 4, wherein a side of the rubber body facing the wheelset axle housing is provided with a positioning groove;
and one side of the wheel-set axle box, which faces the positioning spring, is provided with a positioning bulge, and the positioning spring is installed on the positioning bulge of the wheel-set axle box through the positioning groove.
6. A suspension arrangement according to any one of claims 1 to 5,
the wheel set axle box is provided with a through hole for the positioning guide pillar to pass through, the bottom end of the positioning guide pillar is inserted into the wheel set axle box, and the bottom end of the positioning guide pillar is provided with a fastening assembly;
the fastening assembly is located in the wheel pair axle box and limits the bottom end of the friction inner sleeve.
7. The primary suspension of claim 6, wherein the fastening assembly includes an adjustment plate;
the adjusting plate is fixed on the positioning guide column, and the outline dimension of the adjusting plate is larger than that of the through hole.
8. The primary suspension system of claim 7, wherein the fastening assembly further comprises a locknut and a drop-off prevention pin;
the locknut is located the adjusting plate is kept away from through-hole one side, the anticreep round pin is located locknut keeps away from one side of adjusting plate.
9. A bogie comprising a suspension arrangement according to any one of claims 1 to 8.
10. A rail train comprising the bogie of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110338076.5A CN113799830B (en) | 2021-03-30 | 2021-03-30 | Primary suspension device, bogie and rail train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110338076.5A CN113799830B (en) | 2021-03-30 | 2021-03-30 | Primary suspension device, bogie and rail train |
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| Publication Number | Publication Date |
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| CN113799830A CN113799830A (en) | 2021-12-17 |
| CN113799830B true CN113799830B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE759028A (en) * | 1969-11-20 | 1971-05-17 | Inventio Ag | DEVICE FOR CUSHIONING THE OSCILLATIONS OF THE AXLES OF RAIL VEHICLE BOGIES |
| CN104163180B (en) * | 2014-06-26 | 2017-01-18 | 中车长江车辆有限公司 | Rail wagon bogie single-stage shaft housing hanging and positioning device |
| CN108045394A (en) * | 2017-12-08 | 2018-05-18 | 中车大连机车车辆有限公司 | The quasi- pivoted arm single stage suspension of rail vehicle and axle-box positioning device |
| CN212796886U (en) * | 2020-08-26 | 2021-03-26 | 北京轨道交通技术装备集团有限公司 | Primary suspension, railway vehicle bogie and railway vehicle |
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