A semi-axle frame bogie for railway rail-changing vehicle and railway rail-changing vehicle

Abstract

The present invention belongs to the technical field of railway line rail collection and unloading, and discloses a semi-axle frame type bogie for railway rail-changing vehicles and a railway rail-changing vehicle. The semi-axle frame type bogie for railway rail-changing vehicles comprises a frame mechanism, a wheel axle mechanism, a pillow beam mechanism, a center plate mechanism, a side bearing mechanism and a braking device. The frame mechanism comprises a wheel axle main frame and a connecting cylinder. The wheel axle main frame is a front-to-back symmetrical structure as a whole, and the front and rear ends are sequentially provided with wheel axle mounting through holes, connecting cylinder mounting holes for corresponding insertion and installation of the two ends of the connecting cylinder, and rubber spring placement grooves with rubber springs installed toward the center line of the wheel axle main frame. The connecting cylinder mounting holes are higher than the wheel axle mounting through holes and the rubber spring placement grooves. The wheel axle mechanism comprises bearings, axles and wheels. The present invention also discloses a railway rail-changing vehicle, comprising a vehicle body and the semi-axle frame type bogie. The present invention has the advantages of being applicable to two rail collection and unloading operation modes, lateral and centering, having a wide range of use, and having a structural strength that meets operation requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of railway line rail collection and unloading, and in particular relates to a semi-axle frame bogie for a railway rail-changing vehicle and a railway rail-changing vehicle. Background Art

[0002] The bogies of existing rail-changing trains have the following defects: 1) The axles are symmetrical front and rear and pass through the two wheels laterally, and the single-sided brake shoe lever brake device used results in limited space below, making it impossible for the rails on the rail-changing train to be lowered or retracted and extended longitudinally to pass through. Therefore, it can only meet the requirements of the lateral rail collection and unloading operation mode, and the operation mode is relatively simple. Moreover, since the lateral rail collection and unloading requires sufficient operating space, and currently for railway conditions where lateral rail collection and unloading operations cannot be performed, only manual rail collection and unloading can be adopted. The long rails need to be shortened first and then collected section by section by a flatbed crane. The operation is cumbersome, consumes manpower and material resources, and the efficiency of rail collection is low; 2) Since it can only meet the requirements of the lateral rail collection and unloading operation mode, the rails are preferably stored on the shoulder before collecting. The storage position of the rails before collecting is fixed and inflexible, but if they are stored on the center of the track, they also need to be manually pried to the shoulder one by one, which is time-consuming and labor-intensive, and the efficiency of rail collection is low. Summary of the invention

[0003] The present invention aims to provide a semi-axle frame bogie for a railway rail-changing vehicle and a railway rail-changing vehicle, which can meet two rail collecting and unloading operation modes, namely, lateral and centered, and are suitable for any railway working conditions. The invention solves the problem that the bogie axle of the existing rail-changing vehicle group is symmetrical front and rear and passes through two wheels laterally, and the single-sided brake shoe lever braking device is used, which results in limited space below and can only meet the requirements of the lateral rail collecting and unloading operation mode.

[0004] To this end, the technical solution adopted by the present invention is: a half-axle frame bogie for a railway rail-changing vehicle, characterized in that it includes a frame mechanism with a left-right symmetrical structure, a wheel axle mechanism installed at the four corners of the frame mechanism, a bolster mechanism elastically installed on the frame mechanism through a rubber spring, a center plate mechanism centrally installed on the top of the bolster mechanism, a side bearing mechanism symmetrically installed on the top of the bolster mechanism, and a brake device installed at the left and right ends of the bottom of the bolster mechanism, the frame mechanism includes a left-right symmetrical wheel axle main frame, a connecting tube symmetrically connecting the wheel axle main frame in a front-to-back symmetrical structure, the wheel axle main frame as a whole is a front-to-back symmetrical structure, and the front and rear ends are sequentially provided with a wheel axle mounting through hole, a connecting tube mounting hole for corresponding insertion and installation of the two ends of the connecting tube, and a rubber spring placement groove with a rubber spring installed, the connecting tube mounting hole is higher than the wheel axle mounting through hole and the rubber spring placement groove, the wheel axle mechanism includes a bearing with an outer ring fixedly installed in the wheel axle mounting through hole, an axle with an inner end fixed to the inner ring of the bearing, and a wheel fixedly installed on the outer end of the axle, so as to make room for the longitudinally extending rail to be lowered or retracted from the center of the rail-changing vehicle.

[0005] As a preferred embodiment of the above scheme, four braking devices are used and correspond one to one with the wheels. A mounting hole for installing the core plate mechanism is provided in the middle of the bolster mechanism. Side bearing mounting grooves for installing the side bearing mechanisms are provided at the tops of the left and right ends of the bolster mechanism, and brake mounting grooves for installing the braking device are symmetrically provided at the bottoms of the left and right ends. The core plate mechanism can be connected to the underframe of the railway freight car. When the railway freight car is pressed down due to the load, the side bearing mechanism plays a certain supporting role. An opening is provided on one side of the brake mounting groove corresponding to the adjacent wheel, so that the braking device can pass through and resist the wheel to achieve braking. The structural design is reasonable.

[0006] Further preferably, the end of the inner ring of the bearing away from the axle is provided with a step extending outward and is equipped with a limit block that fits with the step. The inner end of the axle passes through the bearing and is threadedly connected to the limit block, thereby limiting lateral movement of the bearing. The outer end of the axle is threadedly installed with a limit cover that resists the wheel. The structural design is reasonable to ensure that the axle, wheel and bearing are firmly installed.

[0007] It is further preferred that the diameter of the outer end of the axle is larger than the diameter of the inner end, and the outer end of the axle and the wheel, the inner end of the wheel and the bearing are assembled by interference fit, which makes assembly convenient and fastened. Considering that the diameter of the wheel is much larger than the bearing, the diameter of the outer end of the axle is larger than the diameter of the inner end, and the structural design is reasonable.

[0008] Further preferably, the left and right ends of the connecting tube are welded to the connecting tube mounting hole, and the welding is firm.

[0009] Further preferably, four rubber springs are used and are installed in the rubber spring installation grooves one by one. Since the rubber spring installation grooves are symmetrically arranged left and right and front and back, the rubber springs are also symmetrically arranged, effectively ensuring the supporting effect of the elastic connection. The bottom of the pillow beam mechanism and the rubber spring installation grooves are both provided with corresponding installation holes for inserting the upper and lower mounting columns of the rubber springs, and the structural design is reasonable.

[0010] Further preferably, end covers are installed at the two ends of the wheel axle mounting through hole by bolts, and the end covers are used to cover the wheel axle mounting through hole at the front and back, thereby covering internal bearings and other parts to improve the aesthetics. The end cover located on the outside is provided with a through hole for the outer end of the axle to pass through. The structural design is reasonable, which facilitates the front and back corresponding installation of the end covers at the two ends of the wheel axle mounting through hole.

[0011] Further preferably, the inner end face of the axle is circumferentially provided with a threaded hole, the limit stopper is provided with a through hole corresponding to the threaded hole on the inner end face of the axle, and is equipped with a stud passing through the through hole and screwed into the threaded hole, so that the installation is firm and the assembly is convenient and quick.

[0012] Further preferably, the braking device adopts a unit brake cylinder, which occupies a small space, thereby freeing up space under the bogie to facilitate the passage of the longitudinal rail.

[0013] The present invention also adopts a technical solution: a railway track-changing vehicle, comprising a vehicle body and a half-axle frame bogie for the above-mentioned railway track-changing vehicle.

[0014] Beneficial effects of the present invention:

[0015] (1) Compared with the existing rail-changing train sets, in which the bogie axles are symmetrical front and rear and extend transversely through the two wheels, and the single-sided brake shoe lever brake device is used, the semi-axle frame bogie used in this scheme has a connecting tube mounting hole higher than the wheel axle mounting hole and the rubber spring mounting groove, which means that the connecting tube is located higher than the axle. The brake device is installed at the left and right ends of the bolster mechanism, thereby cleverly freeing up space under the bogie to facilitate the longitudinally extended rails to be lowered or retracted from the longitudinal center of the rail-changing train body. This scheme is suitable for both lateral and central rail collection and unloading operation modes, and is suitable for a variety of railway working conditions and has a wide range of uses.

[0016] (2) The outer ring of the bearing is fixedly installed in the wheel axle mounting hole, the inner end of the axle is fixed to the inner ring of the bearing, and the wheel is fixedly installed on the outer end of the axle. The structure is interlocking and the axle is built-in, which greatly reduces the lateral size of the bogie. The axle is only connected to the wheel and the bearing installed on the frame mechanism. The connecting tube of the frame mechanism is symmetrically connected to the wheel axle main frame in the front and rear directions, thereby replacing the connecting function of the axle, ensuring that the overall structure of the bogie is stable and the structural strength meets the operation requirements.

[0017] In summary, the present invention has the advantages of being applicable to both lateral and central rail collecting and unloading operation modes, having a wide range of uses, and having a structural strength that meets operation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the present invention.

[0019] Figure 2 for Figure 1 Front view of .

[0020] Figure 3 for Figure 1 Left view of .

[0021] Figure 4 This is a cross-sectional view of the wheel-axle mechanism.

[0022] Figure 5 A top view of the structural mechanism.

[0023] Figure 6 This is a half-section front view of the axle main frame. DETAILED DESCRIPTION

[0024] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0025] Combination Figure 1 — Figure 6 As shown, a half-axle frame bogie for a railway track-changing vehicle comprises a frame mechanism 1 with a left-right symmetrical structure, a wheel axle mechanism 2 installed at four corners of the frame mechanism 1, a bolster mechanism 3 elastically installed on the frame mechanism 1 through a rubber spring, a center plate mechanism 4 centrally installed on the top of the bolster mechanism 3, a side bearing mechanism 5 symmetrically installed on the top of the bolster mechanism 3, and a brake device 6 installed at the left and right ends of the bottom of the bolster mechanism 3.

[0026] A half-axle frame bogie for a railway track-changing vehicle, in which the direction of travel of the wheel axle mechanism 2 is generally the front direction, the opposite direction is the rear direction, and the direction transversely perpendicular to the forward direction is the left and right direction, so Figure 1 The top view is arranged in the left front, right back, bottom left, top right directions.

[0027] The frame mechanism 1 is composed of a left-right symmetrical wheel axle main frame 11 and a connecting tube 12 which is symmetrically connected to the wheel axle main frame 11 in a front-back direction.

[0028] The axle main frame 11 is a front-to-back symmetrical structure as a whole, and the front and rear ends are sequentially provided with axle mounting through holes 111, connecting tube mounting holes for corresponding insertion and installation of the two ends of the connecting tube 12, and rubber spring mounting grooves 112 for installing rubber springs.

[0029] The connecting tube mounting hole is higher than the axle mounting through hole 111 and the rubber spring placement groove 112 .

[0030] End covers 24 are installed at both ends of the axle mounting through hole 111 by means of bolts, and the end cover 24 located on the outer side is provided with a through hole for the outer end of the axle 22 to pass through.

[0031] The left and right ends of the connecting tube 12 are welded to the connecting tube mounting hole.

[0032] Four rubber springs are used and are installed in the rubber spring installation grooves 112 in a one-to-one correspondence.

[0033] The axle mechanism 2 consists of a bearing 23 with an outer ring fixedly mounted in the axle mounting through hole 111, an axle 22 with an inner end fixed to the inner ring of the bearing 23, and a wheel 21 fixedly mounted on the outer end of the axle 22, thereby leaving space for the longitudinally extending rails to be lowered or retracted from the center of the rail-changing vehicle.

[0034] The inner end surface of the axle 22 is circumferentially provided with a threaded hole.

[0035] The end of the inner ring of the bearing 23 away from the axle 22 is provided with a step extending outwards and is equipped with a limit stopper 231 that fits with the step.

[0036] The inner end of the axle 22 passes through the bearing 23 and is threadedly connected to the limit stopper 231, thereby limiting the lateral movement of the bearing 23.

[0037] The limit stopper 231 is in the shape of a circular plate as a whole.

[0038] The limit stopper 231 is provided with a through hole corresponding to the threaded hole on the inner end surface of the axle 22 and is equipped with a stud 232 passing through the through hole and screwed into the threaded hole.

[0039] A limiting cover 25 is threadedly mounted on the outer end of the axle 22 to abut against the wheel 21 .

[0040] The diameter of the outer end of the axle 22 is larger than the diameter of the inner end, and the outer end of the axle 22 and the wheel 21, as well as the inner end of the wheel 21 and the bearing 23 are assembled by interference fit.

[0041] A mounting hole for mounting the core plate mechanism 4 is provided in the middle of the bolster mechanism 3 .

[0042] The top of the left and right ends of the bolster mechanism 3 is provided with a side bearing placement groove 31 for installing the side bearing mechanism 5, and the bottom of the left and right ends is symmetrically provided with a brake placement groove for installing the brake device 6.

[0043] An opening is provided on one side of the brake placement groove corresponding to the adjacent wheel 21 so that the brake device 6 can pass through and abut against the wheel 21 to achieve braking.

[0044] The bottom of the bolster mechanism 3 and the rubber spring placement groove 112 are both provided with corresponding mounting holes for inserting the mounting columns at the upper and lower ends of the rubber spring.

[0045] There are four brake devices 6 corresponding to the wheels 21 one by one.

[0046] The brake device 6 preferably adopts a unit brake cylinder.

[0047] The utility model relates to a railway track-changing vehicle, which is mainly composed of a vehicle body and a half-axle frame bogie used for the railway track-changing vehicle.

[0048] When the rail-changing vehicle lowers or retracts the rails longitudinally in the center of the vehicle body, the half-axle frame bogie leaves space below for the rails to pass through, thereby realizing the working mode of centered longitudinal rail collection.

[0049] When the rail-changing vehicle lowers or retracts the rails longitudinally from the left or right sides, the half-axle frame bogie does not affect the operation.

[0050] When the rails removed before track closure are stored in the center of the track, the operation mode is switched to the central longitudinal track closure mode. When the rails are stored on the shoulder of the track, the operation mode is switched to the lateral track closure mode.

Claims

1. A half-axle frame bogie for a railway track-changing vehicle, characterized in that: The invention comprises a frame mechanism (1) with a left-right symmetrical structure, a wheel axle mechanism (2) installed at four corners of the frame mechanism (1), a bolster mechanism (3) elastically installed on the frame mechanism (1) through a rubber spring, a center plate mechanism (4) centrally installed on the top of the bolster mechanism (3), a side bearing mechanism (5) symmetrically installed on the top of the bolster mechanism (3), and a brake device (6) installed at the left and right ends of the bottom of the bolster mechanism (3), wherein the frame mechanism (1) comprises a left-right symmetrical wheel axle main frame (11), and a connecting tube (12) symmetrically connected to the wheel axle main frame (11) in a front-to-back symmetrical manner, wherein the wheel axle main frame (11) as a whole has a front-to-back symmetrical structure, and the front and rear ends are connected to the wheel axle main frame (11). A wheel axle mounting through hole (111), connecting tube mounting holes for corresponding insertion and mounting of two ends of a connecting tube (12), and a rubber spring mounting groove (112) on which a rubber spring is mounted are sequentially arranged toward the center line of the wheel axle main frame (11). The connecting tube mounting hole is higher than the wheel axle mounting through hole (111) and the rubber spring mounting groove (112). The wheel axle mechanism (2) comprises a bearing (23) whose outer ring is fixedly mounted in the wheel axle mounting through hole (111), an axle (22) whose inner end is fixed to the inner ring of the bearing (23), and a wheel (21) fixedly mounted on the outer end of the axle (22), thereby leaving space for the longitudinally extending rail to be lowered or retracted from the center of the rail-changing vehicle.

2. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: The brake devices (6) are four and correspond to the wheels (21) one by one. A mounting hole for mounting the core plate mechanism (4) is provided in the middle of the bolster mechanism (3). Side bearing mounting grooves (31) for mounting the side bearing mechanism (5) are provided at the top of the left and right ends of the bolster mechanism (3). Braking mounting grooves for mounting the brake devices (6) are symmetrically provided at the bottom of the left and right ends. An opening is provided on one side of the braking mounting groove corresponding to the adjacent wheel (21), so that the brake device (6) can pass through and abut against the wheel (21) to achieve braking.

3. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: The end of the inner ring of the bearing (23) away from the axle (22) is provided with a step extending outwards and is equipped with a limit stopper (231) that fits with the step. The inner end of the axle (22) passes through the bearing (23) and is threadedly connected to the limit stopper (231), thereby limiting the lateral movement of the bearing (23). The outer end of the axle (22) is threadedly mounted with a limit cover (25) that abuts against the wheel (21).

4. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: The diameter of the outer end of the axle (22) is greater than the diameter of the inner end, and the outer end of the axle (22) and the wheel (21), as well as the inner end of the wheel (21) and the bearing (23) are assembled in an interference fit manner.

5. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: The left and right ends of the connecting tube (12) are welded to the connecting tube mounting hole.

6. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: Four rubber springs are used and are installed in the rubber spring placement grooves (112) in a one-to-one correspondence. The bottom of the bolster mechanism (3) and the rubber spring placement grooves (112) are both provided with corresponding installation holes for inserting the installation columns at the upper and lower ends of the rubber springs.

7. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: End covers (24) are installed at both ends of the wheel axle mounting through hole (111) by means of bolts, and the end cover (24) located on the outside is provided with a through hole for the outer end of the axle (22) to pass through.

8. The half-axle frame bogie for a railway track-changing vehicle according to claim 3, characterized in that: The inner end surface of the axle (22) is provided with a threaded hole in an annular direction, the limit stopper (231) is provided with a through hole corresponding to the threaded hole on the inner end surface of the axle (22), and is equipped with a stud (232) passing through the through hole and screwed into the threaded hole.

9. The half-axle frame bogie for a railway track-changing vehicle according to claim 1, characterized in that: The braking device (6) adopts a unit-type brake cylinder.

10. A railway track-changing vehicle, characterized in that: The invention comprises a car body and a semi-axle frame bogie for a railway track-changing vehicle as claimed in any one of claims 1 to 9.

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