Single-axle bogie

Abstract

The utility model discloses a single-shaft bogie, and belongs to the technical field of rail engineering trucks. Comprising a framework, a wheel set, a braking device, a vibration reduction device, a center plate assembly and a guide ring device, the center plate assembly comprises a lower center plate, an upper center plate and a center pin, the guide ring device comprises an outer rotating guide ring and an inner rotating guide ring, the lower center plate is fixed to the upper side of the framework, and the upper center plate is located on the upper side of the lower center plate and coaxially arranged with the lower center plate; the center pin downwards penetrates through the axes of the upper center plate and the lower center plate, and the lower part of the center pin is fixedly connected with the framework; the outer rotating guide ring is fixed on the framework, and a ring groove is coaxially formed in the inner wall of the outer rotating guide ring; the inner rotating guide ring and the outer rotating guide ring are coaxially arranged, the inner rotating guide ring is located on the adjacent inner side of the outer rotating guide ring and located outside the center plate assembly, the upper side of the inner rotating guide ring is higher than the upper side of the outer rotating guide ring and flush with the upper side of the upper center plate, the inner rotating guide ring is located above the framework, and a protruding ring matched with the annular groove is coaxially arranged on the outer wall of the inner rotating guide ring. The convex ring is located in the annular groove, and floating gaps are formed between the three edges of the convex ring and the corresponding sides of the annular groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail engineering vehicles, and particularly relates to a single-axle bogie. Background Art

[0002] Rail engineering vehicles, such as shunting locomotives and track maintenance locomotives, usually include: a car body, on-board equipment and a bogie; the bogie is arranged at the lower part of the car body to support the car body and on-board equipment so that the rail engineering vehicle can travel along the track; the on-board equipment is installed on the car body or the bogie, and the on-board equipment is used to perform corresponding operations. In the related art, the bogie of a rail engineering vehicle is usually provided with two or three bogies. However, the two or three bogies have a complex structure, not only have a large deadweight, but also have a high cost. In the prior art, for some rail engineering vehicles with lower requirements, a single-axle bogie can be used. The axle bogie has only one axle, and its structural form and operating performance are very different from those of traditional bogies.

[0003] For example, the patent with application number CN201910747182.1 discloses a single-axle bogie, which includes a wheelset and axle boxes arranged at both ends of the wheel axle of the wheelset, the bogie also includes a frame, a primary suspension device and a secondary suspension device, the frame includes two side beams and two end beams, the frame is in a U-shape, the primary suspension device is located between the side beams of the frame and the axle box, and the secondary suspension device is located above the side beams of the frame.

[0004] For example, the patent with application number CN202010910628.0 discloses a single-axle bogie, comprising: a single wheelset, the two wheels of the wheelset are pressed onto the same axle, and the two ends of the axle protrude from the two wheels respectively; two axle boxes, respectively mounted on the two ends of the axle and located outside the wheels; a series of suspension devices, fixed on the two axle boxes; a Japanese-shaped frame, the frame comprising two parallel side beams, two parallel cross beams and an intermediate longitudinal beam, the side beams and the cross beams form a closed frame, the intermediate longitudinal beam is arranged in parallel between the two side beams and the two ends of the intermediate longitudinal beam are respectively fixed to the two cross beams; the two side beams are respectively located and connected to the two series of suspension devices; wherein the intermediate longitudinal beam is used to strengthen the strength of the frame and provide an installation interface.

[0005] For example, the patent with application number CN201621336524.9 discloses a single-axle bogie for railway vehicles, including a wheelset assembly, an axle box assembly, a suspension device, a basic braking device and a positioning device, wherein the suspension device is a leaf spring suspension device, one end of which is located on the top of the axle box assembly, and the other end is connected to the bottom of the vehicle; the basic braking device is a loose double-sided brake shoe brake device, which is suspended on the vehicle body frame; one end of the positioning device is connected to the vehicle body frame, and the other end is clearance-fitted with the axle box assembly, and a wear plate is welded on the positioning device, and the wear plate and the axle box assembly rub during the operation of the vehicle.

[0006] For example, the patent with application number CN201810847700.2 discloses a single-axle bogie, including a frame, an axle box is respectively installed at both ends of the bottom surface of the frame, a wheel axle assembly is installed between the two axle boxes, a series of damping spring assemblies are arranged between the axle boxes and the frame, a brake assembly is respectively installed at the positions of the wheels of the wheel axle assembly at both ends of the bottom surface of the frame, a center plate pin is provided in the middle of the top surface of the frame, a frame connection assembly is respectively provided at both ends of the top surface of the frame, and the frame connection assembly includes a frame connection plate, the A frame limit connecting seat protruding upward is provided in the middle of the frame connecting plate, and the frame limit connecting seat is a square cavity structure. A frame connecting long hole is provided on the top surface of the frame limit connecting seat in the longitudinal direction, and an I-shaped connecting piece is inserted in the frame connecting long hole. A second-series rubber spring assembly is respectively clamped at both longitudinal ends of the frame connecting plate, and the second-series rubber spring assembly includes a second-series rubber spring mounting plate and a second-series rubber spring. The lower end of the second-series rubber spring is clamped on the frame connecting plate, and the upper end of the second-series rubber spring is vulcanized on the second-series rubber spring mounting plate.

[0007] It can be seen from the above patents that the existing single-axle bogie has no steering structure and the center distance between the two axles is relatively long, so the vehicle is prone to derailment when passing through a curve, causing a safety accident. Utility Model Content

[0008] In order to solve the above problems, the embodiment of the utility model provides a single-axle bogie, which uses a center plate assembly and a guide ring device as a steering structure. The center plate assembly is a common structure, and the guide ring device is used as a side bearing structure; under the advantage of the simple structure of the single-axle bogie itself, it can also avoid turning derailment. The technical solution is as follows:

[0009] The utility model embodiment provides a single-axle bogie, including a frame 1 arranged in the front-back direction, a wheelset 2 arranged on the lower side of the frame 1 and in the left-right direction, a braking device 3 on the frame 1 and matched with the wheelset 2, a vibration reduction device 4 between the wheelset 2 and the frame 1, a center plate assembly 5 and a guide ring device 6 on the upper side of the frame 1, the center plate assembly 5 is located directly above the middle of the wheelset 2 and includes a lower center plate 51, an upper center plate 52 and a center pin 53, the guide ring device 6 is arranged around the center plate assembly 5 and includes an outer rotating guide ring 61 and an inner rotating guide ring 62, both of which are circular ring structures, the lower center plate 51 is fixed on the upper side of the frame 1 and its axis is located on the median vertical line of the wheelset 2, the upper center plate 52 is located on the upper side of the lower center plate 51 and its axis is located on the median vertical line of the wheelset 2, The lower center disk 51 is coaxially arranged; the center pin 53 downwardly penetrates the axis of the upper center disk 52 and the lower center disk 51 and its lower part is fixedly connected to the frame 1; the outer rotating guide ring 61 is fixed on the frame 1, and an annular groove 63 is coaxially arranged on its inner wall; the inner rotating guide ring 62 is coaxially arranged with the outer rotating guide ring 61, and is located on the adjacent inner side of the outer rotating guide ring 61, and is located outside the center disk assembly 5. It is coaxially arranged with the center disk assembly 5, and its upper side is higher than the upper side of the outer rotating guide ring 61 and is flush with the upper side of the upper center disk 52. It is located above the frame 1, and a convex ring 64 cooperating with the annular groove 63 is coaxially arranged on its outer wall; the convex ring 64 is located in the annular groove 63 and has a floating gap 65 between its three sides and the corresponding sides of the annular groove 63.

[0010] Specifically, the cross-sections of the annular groove 63 and the convex ring 64 in the embodiment of the utility model are both rectangular; the depth of the annular groove 63 is 25-35mm, and its width is 40-60mm; the outer diameter of the inner rotating guide ring 62 is 480-540mm; the outer diameter of the outer rotating guide ring 61 is 650-700mm and the gap between it and the inner rotating guide ring 62 is 5-10mm, and the floating gap 65 is 5-8mm.

[0011] Among them, the outer rotating guide ring 61 in the embodiment of the utility model includes a lower rotating guide ring and a guide ring pressure plate on the upper side thereof, and an oil cup 66 connected to the ring groove 63 is provided on the outer side of the guide ring pressure plate, and the lower rotating guide ring and the guide ring pressure plate are fixed to the frame 1 by a plurality of fixing bolts 67, and the fixing bolts 67 are vertically arranged upward to fix the frame 1, the lower rotating guide ring and the guide ring pressure plate together.

[0012] Among them, the frame 1 in the embodiment of the utility model includes a support plate 11 and a crossbeam 12 and two longitudinal beams 13 on the lower side thereof, the core plate assembly 5 and the guide ring device 6 are both arranged on the upper side of the support plate 11; the two longitudinal beams 13 are arranged side by side left and right, and are arranged along the front-back direction. They are symmetrically arranged with respect to the mid-vertical line of the wheelset 2, and are respectively located at the left and right ends of the support plate 11, and are located between the two rail wheels of the wheelset 2. They are composed of two longitudinal plates arranged side by side left and right; the crossbeam 12 is located between the two longitudinal beams 13, and is arranged along the left-right direction. Two fixing pins 16 for fixing the rotating shaft of the wheelset 2 are arranged side by side left and right at the lower part, and they are composed of front-back side by side. The vibration damping device 4 is composed of two transverse plates respectively arranged on the front and rear sides of the rotating shaft; the longitudinal plate is arranged in the front-to-back direction, the transverse plate is arranged in the left-right direction, and the lower part of the longitudinal plate is provided with an inverted U-shaped notch in the vertical direction for the rotating shaft to pass through; the fixing pin 16 is arranged in the front-to-back direction, and it abuts against the lower side of the rotating shaft, and its front and rear ends are respectively fixed on the two transverse plates, and it is arranged close to the longitudinal beam 13 on the corresponding side; the rotating shaft is located between the two transverse plates; the vibration damping device 4 includes two vibration damping units arranged side by side on the left and right, the two vibration damping units are respectively located in the two longitudinal beams 13, and the vibration damping unit is located between the two longitudinal plates and between the rotating shaft and the support plate 11.

[0013] Specifically, the support plate 11 in the embodiment of the utility model includes a circular plate in the middle and two strip plates on the left and right sides of the circular plate. The outer side of the circular plate is flush with the outer side of the strip plate on the corresponding side. The two strip plates are respectively located directly above the two longitudinal beams 13 and are both arranged in the front-to-back direction. The circular plate is coaxially arranged with the guide ring device 6 and its size is matched with the outer rotating guide ring 61. The core plate assembly 5 and the guide ring device 6 are both arranged on the upper side of the circular plate. The transverse plate is fixed on the lower side of the circular plate and its two ends are fixedly connected to the longitudinal plates on the corresponding side. The longitudinal plate is fixed on the lower side of the strip plate.

[0014] Furthermore, a plurality of first reinforcing ribs 14 are provided between the two longitudinal plates in the embodiment of the utility model, the plurality of first reinforcing ribs 14 are arranged side by side front to back, the first reinforcing ribs 14 are arranged in the left-right direction and the upper side thereof is fixed to the lower side of the strip plate; a plurality of second reinforcing ribs 15 are provided on the side of the transverse plate away from the rotating shaft, the plurality of second reinforcing ribs 15 are arranged side by side left to right, the second reinforcing ribs 15 are arranged in the front-back direction and the upper side thereof is fixed to the lower side of the circular plate.

[0015] Among them, the vibration reduction unit in the embodiment of the utility model includes a support block 41 and a soft vibration reduction plate 42 on the upper side thereof; the support block 41 and the soft vibration reduction plate 42 are both arranged in the front-to-back direction, and are located between the two longitudinal plates, and the left and right sides thereof are located on the adjacent inner sides of the longitudinal plates on the corresponding sides; the support block 41 is fixed on the upper side of the rotating shaft, and the soft vibration reduction plate 42 is clamped between the support block 41 and the support plate 11.

[0016] Specifically, the soft vibration damping plate 42 in the embodiment of the utility model is a strip rubber plate with a thickness of 8-15mm; the support block 41 is a rectangular block with an arc-shaped notch cooperating with the shaft in the left and right directions in the middle of its lower side, which is welded and fixed on the shaft.

[0017] Among them, the braking device 3 in the embodiment of the utility model includes two or four braking units, and the braking units are arranged in the front and rear directions; if there are two braking units, the two braking units are respectively arranged at the front or rear of the two longitudinal beams 13 and are respectively located in front of or behind the two rail wheels; if there are four braking units, a braking unit is respectively provided at the front and rear of the two longitudinal beams 13, and the two braking units on the same longitudinal beam 13 are arranged opposite to each other and are respectively located at the front and rear sides of the rail wheels on the corresponding sides.

[0018] Among them, the brake unit in the embodiment of the utility model includes a first connecting plate 31, a second connecting plate 32, a brake cylinder 33, a brake shoe 34 and a brake base 35; the brake base 35 is vertically arranged, located on the outer side of the longitudinal beam 13, and its upper part is hinged to the first connecting plate 31 on the longitudinal beam 13; the brake cylinder 33 is arranged in the front-to-back direction, located on the side of the brake base 35 away from the rail wheel, located on the outer side of the longitudinal beam 13, its cylinder body is hinged to the second connecting plate 32 at the end of the longitudinal beam 13, and its telescopic rod is hinged to the middle part of the brake base 35; the brake shoe 34 is located on the side of the brake base 35 close to the rail wheel, located in the adjacent front or rear of the rail wheel, and hinged to the lower part of the brake base 35; the first connecting plate 31 and the second connecting plate 32 are both arranged in the left-right direction.

[0019] The beneficial effects of the technical solution provided by the embodiment of the utility model are as follows: the embodiment of the utility model provides a single-axle bogie, with a center plate assembly and a guide ring device as a steering structure, the center plate assembly is a common structure, and the guide ring device is used as a side bearing structure; with the advantage of the simple structure of the single-axle bogie itself, it can also avoid derailment during turning. In addition, the vibration reduction device of this patent has a simple structure and is easy to maintain; the installation and maintenance of the wheelset are simple, and the wheelset can be removed by removing the fixing pin. The frame has a high strength under the premise of a relatively simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a single-axle bogie provided in Example 1;

[0021] Figure 2 is a top view of the single-axle bogie provided in Example 1;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 3BB section view;

[0024] Figure 5 is a schematic structural diagram of a single-axle bogie provided in Example 2;

[0025] Figure 6 is a schematic diagram of the structure of the framework provided in Example 1;

[0026] Figure 7 yes Figure 6 AA section view;

[0027] Figure 8 yes Figure 6 BB section view;

[0028] Fig. 9 It is a structural schematic diagram of the guide ring device;

[0029] Fig.10 yes Fig. 9 sectional view of .

[0030] In the figure: 1 frame, 2 wheelset, 3 brake device, 4 vibration reduction device, 5 center plate assembly, 6 guide ring device;

[0031] 11 support plate, 12 cross beam, 13 longitudinal beam, 14 first reinforcing rib, 15 second reinforcing rib, 16 fixing pin;

[0032] 31 first connecting plate, 32 second connecting plate, 33 brake cylinder, 34 brake shoe, 35 brake base;

[0033] 41 support block, 42 ​​soft vibration damping plate;

[0034] 51 lower center plate, 52 upper center plate, 53 center pin;

[0035] 61 outer rotating guide ring, 62 inner rotating guide ring, 63 ring groove, 64 convex ring, 65 floating gap, 66 oil cup, 67 fixing bolt. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] See also Figure 1-46-10, Example 1 provides a single-axle bogie, including a frame 1, a wheelset 2, a brake device 3, a damping device 4 (reducing vehicle body vibration, thereby ensuring vehicle body stability), a center plate assembly 5 (transmitting traction and bearing weight) and a guide ring device 6 (thereby replacing the existing side bearing structure, making the single-axle bogie structure simpler, ensuring good contact between the upper center plate and the lower center plate when the vehicle starts and brakes in an emergency, and preventing the vehicle from overturning in this state), etc. Among them, the frame 1 is arranged in the front-to-back direction, and includes a support plate 11 and a crossbeam 12 and two longitudinal beams 13 on its lower side. The wheelset 2 is arranged in the left-right direction, which is an axle box-free wheelset, and includes a rotating shaft and rail wheels at both ends. The brake device 3 is arranged on the frame 1, which cooperates with the wheelset 2, and can be specifically a cylinder-driven brake structure, which can adopt single-side braking (single-side braking is adopted in this embodiment) or double-side braking. The damping device 4 is arranged between the wheelset 2 and the frame 1, and includes two damping units arranged side by side on the left and right. The center plate assembly 5 is arranged at the middle of the upper side of the frame 1, which can realize the steering of the frame 1. It is located just above the middle of the wheelset 2, and includes a lower center plate 51, an upper center plate 52, and a center pin 53. The guide ring device 6 is arranged at the upper side of the frame 1, which surrounds the center plate assembly 5, and includes an outer rotating guide ring 61 and an inner rotating guide ring 62, which play the role of a side bearing.

[0039] Among them, the center plate assembly 5 in this embodiment can refer to application numbers CN200920086863.X, CN202222838425.2, CN200710014858.3, etc. The lower center plate 51 and the upper center plate 52 are circular structures that cooperate with each other, and the axis centers thereof are both provided with center holes for the center pin 53 to pass through in the vertical direction. The lower center plate 51 is fixed on the upper side of the frame 1 (specifically a circular plate) and its axis center is located on the median perpendicular line (vertical setting) of the wheelset 2, and the upper center plate 52 is located on the upper side of the lower center plate 51 and is coaxially arranged with the lower center plate 51. The center pin 53 is arranged vertically, and it passes through the axis centers of the upper center plate 52 and the lower center plate 51 downward, and its lower part is fixedly connected to the frame 1. The outer rotating guide ring 61 is fixed on the frame 1, and an annular groove 63 is coaxially arranged on its inner wall. It includes a lower rotating guide ring and a guide ring pressure plate on its upper side, etc. The inner lower part of the lower rotating guide ring and the inner upper part of the guide ring pressure plate are provided with mutually matching annular notches, and the two annular notches constitute the annular groove 63. The inner rotating guide ring 62 is coaxially arranged with the outer rotating guide ring 61, and is located on the adjacent inner side of the outer rotating guide ring 61 (the gap between the outer rotating guide ring 61 and the inner rotating guide ring 62 is 5-10mm). It is located outside the core plate assembly 5, and is coaxially arranged with the core plate assembly 5. Its upper side is higher than the upper side of the outer rotating guide ring 61 and is flush with the upper side of the upper core plate 52. It is located above the frame 1, and a convex ring 64 cooperating with the annular groove 63 is coaxially arranged on its outer wall. The upper side of the inner rotating guide ring 62 and the upper side of the upper core plate 52 are both fixedly connected to the bottom of the vehicle body. The convex ring 64 is located in the annular groove 63 and has a floating gap 65 (specifically 5-8 mm) between its three sides and the corresponding sides of the annular groove 63. An oil cup 66 connected to the annular groove 63 is provided on the outer side of the guide ring pressure plate. The lower rotating guide ring and the guide ring pressure plate are fixed to the frame 1 by a plurality of fixing bolts 67 (specifically 10). The fixing bolts 67 are vertically arranged upward to fix the frame 1, the lower rotating guide ring and the guide ring pressure plate together. Five fixing bolts 67 are located at the front of the outer rotating guide ring 61 and between the two longitudinal beams 13; the other five fixing bolts 67 are located at the rear of the outer rotating guide ring 61 and between the two longitudinal beams 13. Specifically, the cross-sections of the annular groove 63 and the convex ring 64 in the embodiment of the utility model are both rectangular. The depth of the annular groove 63 is 25-35 mm, and its width is 40-60 mm. The outer diameter of the inner rotating guide ring 62 is 480-540 mm. The outer diameter of the outer rotating guide ring 61 is 650-700 mm.

[0040] Among them, the center plate assembly 5 and the guide ring device 6 in the embodiment of the utility model are both arranged on the upper side of the support plate 11; the support plate 11 includes a circular plate in the middle and two strip plates on the left and right sides of the circular plate, and the outer side of the circular plate is flush with the outer side of the strip plate on the corresponding side. The two strip plates are respectively located directly above the two longitudinal beams 13 and are both arranged in the front-to-back direction. The circular plate is coaxially arranged with the guide ring device 6 and its size matches the outer rotating guide ring 61 (the diameter of the circular plate is almost the same as the outer diameter of the outer rotating guide ring 61). The center plate assembly 5 and the guide ring device 6 are both arranged on the upper side of the circular plate; specifically, the lower center plate 51 and the outer rotating guide ring 61 are fixed on the upper side of the circular plate. The transverse plate is fixed on the lower side of the circular plate and its left and right ends are fixedly connected to the longitudinal plates on the corresponding sides, and the longitudinal plates are fixed on the lower side of the strip plates. Two longitudinal beams 13 are arranged side by side, both arranged in the front-back direction, and arranged symmetrically with respect to the median perpendicular line of the wheelset 2. They are respectively located at the left and right ends of the support plate 11, and are located between the two rail wheels of the wheelset 2. They are composed of two longitudinal plates (arranged in the front-back direction) arranged side by side. The cross beam 12 is located between the two longitudinal beams 13, and is arranged in the left-right direction. Two fixing pins 16 (arranged in the front-back direction) for fixing the rotating shaft of the wheelset 2 are arranged side by side on the left and right sides of the cross beam 12, and are composed of two transverse plates (arranged in the left-right direction) arranged side by side and located on the front and back sides of the rotating shaft. The lower part of the longitudinal plate is provided with an inverted U-shaped notch for the rotating shaft to pass through in the vertical direction. The fixing pin 16 is against the lower side of the rotating shaft, and its front and rear ends are respectively fixed on the two transverse plates, and it is arranged close to the longitudinal beam 13 on the corresponding side. The rotating shaft is located between the two transverse plates, and is located in the inverted U-shaped notch, and its left and right ends extend outward relative to the longitudinal beam 13 on the corresponding side. The two vibration-damping units are respectively located in the two longitudinal beams 13, and the vibration-damping units are located between the two longitudinal plates and between the rotating shaft and the support plate 11. Furthermore, a plurality of (specifically four) first reinforcing ribs 14 are provided between the two longitudinal plates, and the plurality of first reinforcing ribs 14 are arranged side by side front to back. The first reinforcing ribs 14 are arranged in the left-right direction, and the upper side thereof is fixed to the lower side of the strip plate, which is specifically a rectangular plate. A plurality of (specifically two) second reinforcing ribs 15 are provided on the side of the transverse plate away from the rotating shaft, and the plurality of second reinforcing ribs 15 are arranged side by side left to right, and the second reinforcing ribs 15 are arranged in the front-back direction and the upper side thereof is fixed to the lower side of the circular plate.

[0041] Among them, the vibration reduction unit in the embodiment of the utility model includes a support block 41 and a soft vibration reduction plate 42 on its upper side. The support block 41 and the soft vibration reduction plate 42 are both arranged in the front-to-back direction, and are located between the two longitudinal plates, and their left and right sides are located on the adjacent inner sides of the longitudinal plates on the corresponding sides. The support block 41 is fixed on the upper side of the rotating shaft, and the soft vibration reduction plate 42 is clamped between the support block 41 and the support plate 11. Specifically, the soft vibration reduction plate 42 is a strip rubber plate with a thickness of 8-15mm. The support block 41 is a rectangular block, and an arc-shaped notch that cooperates with the rotating shaft is provided in the middle part of its lower side along the left-right direction, and it is welded and fixed on the rotating shaft.

[0042] The braking device 3 in the embodiment of the utility model includes two braking units. The two braking units are respectively arranged at the front or rear of the two longitudinal beams 13 and are respectively located in front of or behind the two rail wheels. Specifically, the two braking units are respectively arranged at the front of the two longitudinal beams 13 and are respectively located in front of the two rail wheels. The braking unit is arranged in the front-to-back direction and includes a first connecting plate 31, a second connecting plate 32, a brake cylinder 33, a brake shoe 34 and a brake base 35. The brake base 35 is arranged vertically, and is located on the outside of the longitudinal beam 13, and its upper part is hinged (through a left-right rotating shaft) on the first connecting plate 31 on the longitudinal beam 13. The brake cylinder 33 is arranged in the front-to-back direction, and is located on the side of the brake base 35 away from the rail wheel. It is located on the outside of the longitudinal beam 13. The front end or rear end of the cylinder body is hinged (through the left-right rotation axis) on the second connecting plate 32 at the end of the longitudinal beam 13. Its telescopic rod is hinged to the middle part of the brake base 35 (through the left-right rotation axis, and the telescopic rod is located between the two side plates). It can be specifically composed of two side plates arranged side by side on the left and right. The brake shoe 34 is located on the side of the brake base 35 close to the rail wheel, and is located in the adjacent front or rear of the rail wheel. It is hinged (through the left-right rotation axis, and the hinge seat of the brake shoe 34 is located between the two side plates) at the lower part of the brake base 35. The first connecting plate 31 and the second connecting plate 32 are both arranged in the left-right direction. Specifically, the first connecting plate 31 is located at the front end or rear end of the two longitudinal plates, and the second connecting plate 32 is fixed on the strip plate.

[0043] Specifically, the single-axle bogie in this embodiment is arranged symmetrically with respect to the mid-perpendicular line of the wheelset 2.

[0044] Example 2

[0045] See also Figure 5 Embodiment 2 provides a single-axle bogie, the structure of which is the same as that of embodiment 1, except that the brake device 3 in this embodiment includes four brake units. A brake unit is provided at the front and rear of each of the two longitudinal beams 13, and the two brake units on the same longitudinal beam 13 are arranged opposite to each other and are respectively located at the front and rear sides of the rail wheel on the corresponding side. Accordingly, the two longitudinal beams 13 and the one cross beam 12 are arranged in an I-shaped configuration.

[0046] Example 3

[0047] See also Figure 1-4 Embodiment 3 provides a single-axle bogie, the structure of which is the same as that of Embodiment 1, except that the brake unit in this embodiment is located on the side of the wheelset 2 away from the middle of the vehicle body.

[0048] Example 4

[0049] Embodiment 4 provides a single-axle bogie, which has the same structure as that of embodiment 1, except that: the depth of the annular groove 63 in this embodiment is 30 mm and its width is 50 mm. The outer diameter of the inner rotating guide ring 62 is 510 mm and its inner diameter is 450 mm. The outer diameter of the outer rotating guide ring 61 is 670 mm and the gap between it and the inner rotating guide ring 62 is 8 mm, and the floating gap 65 is 6 mm. The soft vibration damping plate 42 is a strip rubber plate with a thickness of 100 mm. The diameter of the lower center plate 51 is 310 mm, and the diameter of the upper center plate 52 is 280 mm.

[0050] Among them, "first" and "second" in this patent only serve to distinguish and have no other special meanings.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-axle bogie, comprising a frame (1) arranged in a front-rear direction, a wheelset (2) arranged on the lower side of the frame (1) and in a left-right direction, a braking device (3) on the frame (1) and cooperating with the wheelset (2), and a vibration reduction device (4) between the wheelset (2) and the frame (1); characterized in that: It also includes a center disc assembly (5) and a guide ring device (6) on the upper side of the frame (1), wherein the center disc assembly (5) is located directly above the middle of the wheelset (2) and includes a lower center disc (51), an upper center disc (52) and a center pin (53), wherein the guide ring device (6) is arranged around the center disc assembly (5) and includes an outer rotating guide ring (61) and an inner rotating guide ring (62) both of which are circular ring structures, wherein the lower center disc (51) is fixed on the upper side of the frame (1) and its axis is located on the mid-vertical line of the wheelset (2), wherein the upper center disc (52) is located on the upper side of the lower center disc (51) and is arranged coaxially with the lower center disc (51); wherein the center pin (53) passes downward through the axis of the upper center disc (52) and the lower center disc (51) and its The lower part is fixedly connected to the frame (1); the outer rotating guide ring (61) is fixed on the frame (1), and an annular groove (63) is coaxially provided on its inner wall; the inner rotating guide ring (62) is coaxially arranged with the outer rotating guide ring (61), and is located on the adjacent inner side of the outer rotating guide ring (61). It is located outside the core disk assembly (5), and is coaxially arranged with the core disk assembly (5). Its upper side is higher than the upper side of the outer rotating guide ring (61) and is flush with the upper side of the upper core disk (52). It is located above the frame (1), and a convex ring (64) cooperating with the annular groove (63) is coaxially provided on its outer wall; the convex ring (64) is located in the annular groove (63) and has floating gaps (65) between its three sides and the corresponding sides of the annular groove (63).

2. The single-axle bogie according to claim 1, characterized in that: The cross-sections of the annular groove (63) and the convex ring (64) are both rectangular; the depth of the annular groove (63) is 25-35 mm, and its width is 40-60 mm; the outer diameter of the inner rotating guide ring (62) is 480-540 mm; the outer diameter of the outer rotating guide ring (61) is 650-700 mm and the gap between it and the inner rotating guide ring (62) is 5-10 mm, and the floating gap (65) is 5-8 mm.

3. The single-axle bogie according to claim 1, characterized in that: The outer rotating guide ring (61) includes a lower rotating guide ring and a guide ring pressure plate on its upper side. An oil cup (66) connected to the ring groove (63) is provided on the outer side of the guide ring pressure plate. The lower rotating guide ring and the guide ring pressure plate are fixed to the frame (1) by a plurality of fixing bolts (67). The fixing bolts (67) are arranged vertically upward to fix the frame (1), the lower rotating guide ring and the guide ring pressure plate together.

4. The single-axle bogie according to claim 1, characterized in that: The frame (1) comprises a support plate (11) and a cross beam (12) and two longitudinal beams (13) on its lower side, and the core plate assembly (5) and the guide ring device (6) are both arranged on the upper side of the support plate (11); Two longitudinal beams (13) are arranged side by side, both arranged in the front-rear direction, and are arranged symmetrically about the mid-vertical line of the wheelset (2). They are respectively located at the left and right ends of the support plate (11), and are located between the two track wheels of the wheelset (2). They are composed of two longitudinal plates arranged side by side. The cross beam (12) is located between the two longitudinal beams (13), and is arranged in the left-right direction. Two fixing pins (16) for fixing the rotating shaft of the wheel set (2) are arranged side by side on the left and right sides of the cross beam (12), and the cross beam (12) is composed of two transverse plates arranged side by side in front and back and located on the front and rear sides of the rotating shaft respectively; The longitudinal plate is arranged in the front-to-back direction, the transverse plate is arranged in the left-to-right direction, and the lower part of the longitudinal plate is provided with an inverted U-shaped notch in the vertical direction for the rotation shaft to pass through; the fixing pin (16) is arranged in the front-to-back direction, and it abuts against the lower side of the rotation shaft, and its front and rear ends are respectively fixed to the two transverse plates, and it is arranged close to the longitudinal beam (13) on the corresponding side; The rotating shaft is located between two transverse plates; the vibration reduction device (4) comprises two vibration reduction units arranged side by side on the left and right, the two vibration reduction units are respectively located in two longitudinal beams (13), and the vibration reduction units are located between the two longitudinal plates and between the rotating shaft and the support plate (11).

5. The single-axle bogie according to claim 4, characterized in that: The support plate (11) includes a circular plate in the middle and two strip plates on the left and right sides of the circular plate. The outer side of the circular plate is flush with the outer side of the strip plate on the corresponding side. The two strip plates are respectively located directly above the two longitudinal beams (13) and are both arranged in the front-to-back direction. The circular plate is coaxially arranged with the guide ring device (6) and its size matches the outer rotating guide ring (61). The core plate assembly (5) and the guide ring device (6) are both arranged on the upper side of the circular plate. The transverse plate is fixed on the lower side of the circular plate and its two ends are fixedly connected to the longitudinal plates on the corresponding side. The longitudinal plate is fixed on the lower side of the strip plate.

6. The single-axle bogie according to claim 5, characterized in that: A plurality of first reinforcing ribs (14) are arranged between the two longitudinal plates, the plurality of first reinforcing ribs (14) are arranged side by side in front and back, the first reinforcing ribs (14) are arranged in the left-right direction and the upper side thereof is fixed to the lower side of the strip plate; a plurality of second reinforcing ribs (15) are arranged on the side of the transverse plate away from the rotating shaft, the plurality of second reinforcing ribs (15) are arranged side by side in the left-right direction, the second reinforcing ribs (15) are arranged in the front-back direction and the upper side thereof is fixed to the lower side of the circular plate.

7. The single-axle bogie according to claim 5, characterized in that: The vibration reduction unit comprises a support block (41) and a soft vibration reduction plate (42) on the upper side thereof; the support block (41) and the soft vibration reduction plate (42) are both arranged in the front-rear direction, and are located between two longitudinal plates, and the left and right sides thereof are located on the adjacent inner sides of the longitudinal plates on the corresponding sides; the support block (41) is fixed on the upper side of the rotating shaft, and the soft vibration reduction plate (42) is sandwiched between the support block (41) and the support plate (11).

8. The single-axle bogie according to claim 7, characterized in that: The soft vibration damping plate (42) is a strip-shaped rubber plate with a thickness of 8-15 mm; the support block (41) is a rectangular block with an arc-shaped notch cooperating with the rotating shaft in the middle of the lower side along the left and right directions, and is welded and fixed on the rotating shaft.

9. The single-axle bogie according to claim 4, characterized in that: The braking device (3) comprises two or four braking units, and the braking units are arranged in the front-to-back direction; if there are two braking units, the two braking units are respectively arranged at the front or rear of the two longitudinal beams (13) and are respectively located in front of or behind the two track wheels; if there are four braking units, a braking unit is respectively arranged at the front and rear of the two longitudinal beams (13), and the two braking units on the same longitudinal beam (13) are arranged opposite to each other and are respectively located at the front and rear sides of the track wheels on the corresponding sides.

10. The single-axle bogie according to claim 9, characterized in that: The brake unit comprises a first connecting plate (31), a second connecting plate (32), a brake cylinder (33), a brake shoe (34) and a brake base (35); the brake base (35) is arranged vertically, located on the outer side of the longitudinal beam (13), and its upper part is hinged to the first connecting plate (31) on the longitudinal beam (13); the brake cylinder (33) is arranged in the front-back direction, located on the side of the brake base (35) away from the rail wheel, located on the outer side of the longitudinal beam (13), its cylinder body is hinged to the second connecting plate (32) at the end of the longitudinal beam (13), and its telescopic rod is hinged to the middle part of the brake base (35); the brake shoe (34) is located on the side of the brake base (35) close to the rail wheel, located in the adjacent front or rear of the rail wheel, and is hinged to the lower part of the brake base (35); the first connecting plate (31) and the second connecting plate (32) are both arranged in the left-right direction.

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