CN111137318B - Locking device of variable-track-gauge bogie - Google Patents
Locking device of variable-track-gauge bogie Download PDFInfo
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- CN111137318B CN111137318B CN202010008262.8A CN202010008262A CN111137318B CN 111137318 B CN111137318 B CN 111137318B CN 202010008262 A CN202010008262 A CN 202010008262A CN 111137318 B CN111137318 B CN 111137318B
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- locking
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- axle
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Classifications
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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
- B61F5/50—Other details
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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
- B61F7/00—Rail vehicles equipped for use on tracks of different width
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a locking device of a variable-track bogie, which comprises a supporting cylinder, a plurality of locking units, a plurality of positioning blocks and a rolling ring, wherein the supporting cylinder is used for being sleeved outside an axle; the locking unit and the positioning block are mutually separated, and the rolling ring is connected with the locking unit; the locking unit is in a locking state when the bogie normally operates, and is in an unlocking state when the bogie changes track gauge. The left and right wheels can be unlocked/locked at the same time by only arranging 1 set of locking device in the wheel centering part.
Description
Technical Field
The invention relates to a locking device of a variable-track-gauge bogie, and belongs to the field of variable-track-gauge railway vehicles.
Background
At present, railway gauges in different countries and regions in the world are different, and even inside certain countries and regions, multiple gauges coexist. When the same train needs to run on the railway lines with different gauges in a crossing way, three processing modes exist at present: the first is transit, i.e., transferring containers/passengers from one gauge train to another; the second is to replace the bogie, i.e. one gauge bogie to another gauge bogie; the third is to use a variable gauge bogie, i.e. to change the bogie wheel set to accommodate different gauges. The former two modes have low efficiency, long operation period and high cost; and the third is the opposite. Thus, some countries in the world (e.g., spain, japan) have been researching variable gage bogies for decades and have achieved a series of results.
The core requirement of the variable gauge bogie is that the wheels can be accurately moved axially to a predetermined position and reliably locked after the movement is completed. In response to the actual demand, the prior art is limited to changing between two gauges, namely, a certain variable-gauge bogie can only be suitable for two gauges.
The spanish Talgo company initiated the derailment technique and was applied to articulated pendulum trains. The technology uses an independent rotary wheel, wheel disc brake and brake clamp four-bar linkage hanging structure, and is not suitable for high speed. The locking devices are positioned at two sides of the wheel (4 sets of locking devices are arranged on each wheel set), the outer ring of the axle box bearing is locked by using a T-shaped rod, and the axle box bearing and the wheel are axially and relatively fixed. When the vehicle passes through the ground device, the ground unlocking rail is used for pulling the T-shaped rod away to unlock the axle box bearing, the axle box bearing moves to a new position along with the vehicle wheel under the action of the ground guiding rail, then the ground unlocking rail is used for pushing the T-shaped rod to a locking position, the axle box bearing is locked again, and rail changing is completed. The left wheel and the right wheel are simultaneously changed into rails; in the axial movement process of the wheels, the axle boxes bear the weight of the wheels, and the wheels are free.
Spanish CAF corporation has also subsequently developed a briva variable gauge bogie using an integral wheelset structure with the axle not rotating and the axle disc braked. The locking device is positioned outside the wheels (2 sets of locking devices are arranged on each wheel set), a sliding shaft sleeve is arranged between the axle and the axle box, the wheels are supported on the sliding shaft sleeve through bearings, the sliding shaft sleeve and the axle box are locked through bolts and taper pins, and the locking device is unlocked by means of the dead weight of the axle. When passing through the ground device, the ground supporting rail drives the locking device to unlock the axle box bearing, then the axle box bearing moves to a new position along with the wheels under the action of the ground guiding rail, then the wheel set is separated from the supporting rail, the axle box bearing is locked again automatically, and the rail changing is completed. The left wheel and the right wheel are simultaneously changed into rails; in the axial movement process of the wheels, the axle boxes bear the weight of the wheels, and the wheels are free.
Type a, type B gauge bogies were developed in japan. The A-type gauge bogie adopts an in-wheel motor and an independent rotary wheel structure, and is not suitable for high speed. The locking device is positioned outside the wheel, a sliding shaft sleeve is arranged between the axle and the axle box, the wheel is supported on the sliding shaft sleeve through a bearing, and the sliding shaft sleeve and the axle box are locked through taper pins (similar to a BrAVA variable track bogie). The B-type gauge bogie adopts a traditional wheel set structure, torque is transmitted through roller splines, and a clamp for braking a wheel disc is provided with a follow-up mechanism. The locking device is positioned outside the wheels (2 sets of locking devices are arranged on each wheel set), and the locking device is unlocked and locked by matching the connecting rod mechanism with the ground device. The rail change principle is basically the same as that of the BrAVA rail change bogie.
The Poland develops the SUW2000 variable-gauge wheel set, and the wheel set is braked by adopting an integral wheel structure, so that the wheel set can realize the track change without unloading but without power. The spring pressing disc type locking device is positioned at the inner side of the wheel (2 sets of locking devices are arranged on each wheel set). When the vehicle passes through the ground device, the ground unlocking rail on one side drives the corresponding locking device to unlock the vehicle wheels, then the vehicle wheels are moved to a new position under the action of the ground guiding rail and then separated from the unlocking rail, the vehicle wheels are locked again automatically, and the vehicle wheels on the side are changed into rails. The derailment of the other wheel is then completed in the same manner. The left wheel and the right wheel are successively changed into rails; the wheels are still loaded during the axial movement of the wheels.
The German DB AG/Rafil V track-variable wheel set has the structural principle basically consistent with SUW2000, and only the internal structure of the locking device is different.
In recent years, domestic research and manufacturing institutions have also begun to be involved in the derailment technology, but not in the foreign technology, such as some domestic gauge bogie. The track-variable bogie comprises an axle assembly, a sliding key assembly and an axle box assembly, wherein wheels and axle box bearings are fixedly arranged on an integral mounting seat, and the integral mounting seat can axially slide relative to the axle. The structure and the working principle of the steering frame are similar to those of a Japanese B-type variable-track bogie. The axle box bodies at two ends of the wheel set are respectively provided with a sliding key component, and the action of the sliding key component is triggered by the ground device to unlock/lock the integrated mounting seat, so that the movement and locking of the wheels are controlled.
The track changing action of the track changing bogie needs to be completed on a special ground track changing device. As shown in fig. 27, the ground gauge changer is installed at the junction of two different gauges of lines, and both ends thereof are respectively abutted with the operation lines in a non-contact (gap) manner. The ground gauge changer generally includes a support rail, an unlocking rail, a guide rail, and a butt rail. The bogie enters/exits the ground track gauge changer through the butt joint rail; the supporting rail is arranged at the axle box and used for supporting the weight of the bogie through the axle box so as to unload the wheels; the unlocking rail triggers the locking device to unlock/lock the locking device; the guide rail is used for enabling the wheels to axially move to the designated positions, and changing of the track gauge is achieved.
Chinese patent application "a locking member for a variable gauge bogie (cn201821277229. X)" describes a locking member for a variable gauge bogie, which is mainly characterized in that: the retaining member comprises a bogie body, a wheel shaft and wheels, and further comprises a shaft sleeve, wherein the shaft sleeve is connected to the wheel shaft in a sliding manner through a spline, the wheel shaft is fixed to the bogie body, the wheels are connected to the shaft sleeve in a rotating manner through a bearing fixed shaft, one end of the shaft sleeve, which is positioned on the inner side of a track, is connected with the bogie body through a reset spring, one end of the shaft sleeve, which is positioned on the outer side of the track, is coaxially fixed with a back plate, a locking mechanism is arranged on the back plate and comprises two hoop arms which are identical in structure and are connected to the back plate, and balls and lifting rods which are embedded on the shaft sleeve.
The Chinese patent application "a locking mechanism for a gauge wheel set and a gauge wheel set (CN 201810732191.9)" describes a locking mechanism for a gauge wheel set and a gauge wheel set, comprising a bearing housing and a locking lever, wherein the inner periphery of the bearing housing is provided with a locking working surface; the locking working surface is provided with a plurality of inner ring grooves along the axial direction at intervals, and is provided with sliding grooves which axially penetrate through the inner ring grooves, the locking rod comprises a locking head and a unlocking head, and the locking head is used for being clamped into the inner ring grooves to realize locking; the unlocking head extends out of the sliding groove and can enable the locking head to leave the inner ring groove under the action of external force, so that unlocking is achieved.
Chinese patent application "locking mechanism for variable gauge bogie (CN 201310137008.8)" describes a locking mechanism for variable gauge bogie, the locking mechanism comprising an axle, wheels being mounted on the axle, a stopper being mounted on the axle, the stopper being connected with the axle in a relative rotation, a locking device for restricting the wheels from moving axially along the axle being mounted on the stopper, a trigger type unlocking device being connected to the locking device, the trigger type unlocking device being triggered by means of a variable gauge ground device.
Chinese patent application "a variable gauge wheel set and locking mechanism thereof (CN 201611142943.3)" describes a variable gauge wheel set and locking mechanism thereof, the locking mechanism being disposed between the wheel hub and the axle for locking the wheel in different positions of the axle; the axle is provided with a guide structure for guiding the axial movement of the wheel; the locking mechanism includes: the axle is sleeved with a fixing sleeve, the fixing sleeve is sleeved on a relieving sleeve, a reset element is arranged between the fixing sleeve and the relieving sleeve, the fixing sleeve is provided with a radial through hole, the radial through hole is provided with a limit ball, an upper groove is formed in the inner wall surface of the relieving sleeve, and at least two lower grooves with different axial positions are formed in the outer wall surface of the wheel hub. When the wheel axially moves, the upper groove on the release sleeve is matched with the lower groove at different positions, so that the limit balls lock the wheel at different positions.
Chinese patent application "a variable gauge wheel set (CN 201810333761.7)" describes a variable gauge wheel set comprising wheels, axles and locking mechanisms; the wheels are arranged at two ends of the axle and are connected with the axle through splines; the locking mechanisms are respectively arranged on the outer sides of the wheels and are positioned in axle box bodies at two ends of the axle, and the locking mechanisms are connected with the wheels and used for locking and unlocking the wheels. The locking mechanism comprises an outer sleeve, a locking pin, an inner sleeve and a rolling bearing, wherein the inner sleeve, the rolling bearing and the outer sleeve are sequentially and tightly sleeved from inside to outside, the inner sleeve is in clearance fit with an axle, a groove is formed in an axial boss of the outer sleeve, a concave cambered surface is formed in the inner wall of the axle box, and the locking pin is used for being inserted into the groove and the concave cambered surface to realize locking.
The chinese patent application "a locking mechanism for a gauge wheel set and a gauge wheel set (CN 201810730392.5)" describes a locking mechanism for a gauge wheel set and a gauge wheel set. The main characteristics are that: the locking mechanism comprises a bearing outer sleeve, a locking rod, a bearing assembly and an inner sleeve, wherein the inner sleeve is arranged on an axle on the outer side of a wheel and is positioned in an axle box body, the inner sleeve, the bearing assembly and the bearing outer sleeve are sequentially and tightly sleeved from inside to outside, a positioning boss is arranged on the inner periphery of the bearing outer sleeve, a track gauge change groove is formed in the outer side of the bearing outer sleeve, and the locking rod is inserted into the corresponding change groove to realize locking.
Disclosure of Invention
In the prior art, 2 or 4 sets of locking devices are required to be arranged on the wheel set, the left and right wheels are respectively locked/unlocked by 1 or 2 sets of locking devices, and the structure is too complicated.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a locking device of gauge variable bogie which the structural feature is: the locking device is used for locking the driving wheel assembly and the driven wheel assembly on the axle or unlocking the driving wheel assembly and the driven wheel assembly from the axle; the locking device comprises a supporting cylinder which is used for being sleeved outside the axle, a plurality of locking units and a plurality of positioning blocks which are circumferentially arranged in the supporting cylinder, and a rolling ring which is arranged outside the supporting cylinder; the locking unit and the positioning block are mutually separated, and the rolling ring is connected with the locking unit; the locking unit is in a locking state when the bogie normally operates, and is in an unlocking state when the bogie changes track gauge.
Therefore, after unlocking, when the driving wheel assembly and the driven wheel assembly axially move in place, the unlocking rail is gradually narrowed along with the continuous advancing of the bogie, under the action of restoring force of the springs, the two rolling rings are folded towards the middle, the rolling rings drive control blocks of the locking units connected together to axially move towards the middle, meanwhile, the pin shafts axially move towards the middle and simultaneously generate radial inward movement, the locking blocks of the locking units connected together are driven to also radially move inwards, so that the locking position is entered, the locking device is locked, and the driving wheel assembly and the driven wheel assembly are in a locking state.
According to the embodiment of the invention, the invention can be further optimized, and the following technical scheme is formed after the optimization:
preferably, the driving wheel assembly of the present invention comprises a driving wheel and a driving bushing; the driven wheel assembly comprises a driven shaft sleeve and driven wheels; the driving shaft sleeve is in cross fit with the driven shaft sleeve, and a locking device is arranged at the matched position of the driving shaft sleeve and the driven shaft sleeve; the driving wheel is matched with the axle in two states: the driving wheel can axially slide relative to the axle when unlocked, and driving torque can be transmitted between the driving wheel and the axle when locked; the driven wheel cooperates with the axle in two states: the driven wheel can axially slide relative to the axle during unlocking, and driving torque can be transmitted between the driven wheel and the axle during locking.
For the present invention, the locking unit includes a control block, a locking block mounted on the control block, a support bar and a spring mounted in the control block, and a pin shaft mounted on the locking block; the axial movement of the control block can be converted into radial movement of the locking block so as to realize locking and unlocking of the locking device.
Preferably, the support rod is fixedly arranged in a front cover support rod hole or a rear cover support rod hole on the support cylinder and is used for supporting the spring; the spring is arranged on the supporting rod and is positioned in the spring mounting hole of the control block and used for providing restoring force and locking force for the locking device; preferably, the spring is a cylindrical helical compression steel spring.
In order to better realize the locking state of the locking block, the control block is provided with a rolling ring installation part, a spring installation hole, two control block inclined planes, two Z-shaped grooves, two control block positioning tables and two control block side positioning surfaces; the rolling ring installation part is used for being connected with the rolling ring; the spring mounting hole is used for accommodating a spring; the control block inclined plane is matched with the locking block inclined plane to enable the locking block to keep or release the locking state.
Preferably, the Z-shaped groove is used for limiting the moving path of the pin shaft; the lower part of the control block positioning table is contacted with the inner hole of the cylinder body of the supporting cylinder body and is used for radially positioning the control block; the upper part of the control block positioning table is contacted with the bottom edge positioning surface of the positioning block and is used for limiting the control block to axially slide only; the control block side positioning surface is contacted with the locking block inner side positioning surface of the locking block and used for limiting the rotation of the locking block; the pin shaft is fixedly arranged in the pin hole of the locking block and extends out of the Z-shaped groove of the control block, and is used for controlling the relative movement of the locking block and the control block; preferably, the lower part of the control block positioning table is an arc surface, and the upper part is a plane.
Preferably, the locking block is provided with two pin holes, two locking block outer side positioning surfaces, two locking block locking notches, two locking block end surfaces, two locking block inner side positioning surfaces and two locking block inclined surfaces; the pin holes are used for fixing the mounting pin shafts; one of the locking block locking notches is used for fixing the locking block on the gear hub locking boss, and the other locking block is used for locking the axle locking boss, the driving shaft sleeve locking boss and the driven shaft sleeve locking boss into a whole; the outer side positioning surface of the locking block is contacted with the side positioning surface of the positioning block, the inner side positioning surface of the locking block is contacted with the side positioning surface of the control block, the end surface of the locking block is contacted with the positioning surface of the positioning block groove of the positioning block, and the installation position and the movement direction of the locking block are limited together by the outer side positioning surface of the locking block, the inner side positioning surface of the locking block and the end surface of the locking block; the locking block inclined plane is matched with the control block inclined plane and is used for enabling the locking block to be in a locking state or in a locking state.
Preferably, the positioning block is provided with two positioning block side positioning surfaces, a positioning block arc surface, four positioning block groove positioning surfaces and two bottom edge positioning surfaces; the circular arc surface of the positioning block is fixedly arranged on the inner hole of the cylinder body of the supporting cylinder.
Preferably, the support cylinder comprises a support cylinder body, a support cylinder front cover arranged at the front end of the support cylinder body, and a support cylinder rear cover arranged at the rear end of the support cylinder body; the supporting cylinder front cover, the supporting cylinder body and the supporting cylinder rear cover are connected to form a hollow cavity for installing the locking unit and the positioning block; the front cover of the supporting cylinder is provided with a front cover mounting hole which is used for supporting the locking device on the gear hub in a matched manner with the gear hub supporting surface of the gear hub; the supporting cylinder body is provided with a cylinder body inner hole and six cylinder body notch; the inner hole of the cylinder body is used for fixing the positioning block and radially positioning the control block; the barrel notch is used for providing installation and axial movement space for the rolling ring installation part of the control block.
Preferably, the rolling ring is provided with a rolling ring extrusion surface and three rolling ring mounting grooves; the rolling ring mounting groove is used for mounting a rolling ring mounting part on the control block.
The wheel axle assembly of the variable-track bogie comprises an axle, a driving wheel assembly and a driven wheel assembly, wherein the driving wheel assembly and the driven wheel assembly are arranged on the axle; the driving wheel assembly comprises a driving wheel and a driving shaft sleeve; the driven wheel assembly comprises a driven shaft sleeve and driven wheels;
preferably, the driving shaft sleeve is in cross fit with the driven shaft sleeve, and a locking device is arranged at the matched position of the driving shaft sleeve and the driven shaft sleeve; the driving wheel is matched with the axle in two states: the driving wheel can axially slide relative to the axle when unlocked, and driving torque can be transmitted between the driving wheel and the axle when locked; the driven wheel cooperates with the axle in two states: the driven wheel can axially slide relative to the axle during unlocking, and driving torque can be transmitted between the driven wheel and the axle during locking.
Thus, when a change in track gauge is desired, the axle is unlocked and the wheel is axially movable relative to the axle. After the track gauge is changed, the wheel shaft is locked by the locking device, and the wheel cannot axially move relative to the wheel shaft.
The wheel axle of the invention is assembled into a combined structure which can be fixed and can slide. When the track gauge is changed, the wheel shaft is unlocked, and the wheel can axially move relative to the axle shaft; after the track gauge is changed, the wheel shaft is locked, and the wheel is not axially movable relative to the axle.
In order to better transmit torque (when in locking) and axial movement (when in unlocking), both ends of the axle are provided with an axle extension and an axle spline, and the middle part of the axle is provided with an axle locking boss; the axle extension is used for installing an axle box bearing to support an axle box; the axle spline is matched with the driving wheel and the driven wheel respectively; the axle locking boss is used for fixing the driving wheel assembly and the driven wheel assembly through the locking device.
Preferably, a driving wheel spline is arranged in the hole of the driving wheel, and a circle of driving wheel protruding blocks are arranged on the inner side end surface of the driving wheel; the driving wheel spline is matched with an axle spline on the axle; the driving wheel lug is matched with a driving shaft sleeve lug arranged at the end part of the driving shaft sleeve; and driven wheel splines are arranged in the holes of the driven wheels and are matched with axle splines on the axles.
In one preferred embodiment, a first end part of the driving shaft sleeve is provided with a driving shaft sleeve lug matched with the driving wheel, the outer surface of a second end part is provided with a driving shaft sleeve locking boss, and the second end part is provided with a driving shaft sleeve notch; the driving shaft sleeve and the driven shaft sleeve are in cross fit through a driving shaft sleeve notch; the driving shaft sleeve locking boss is used for fixing the driving wheel assembly on the axle; and a driving shaft sleeve spline is arranged on the outer diameter of the middle part of the driving shaft sleeve and is used for being matched with a gear hub spline in a gear hub arranged on the driving shaft sleeve.
In order to facilitate the cross fit of the driving shaft sleeve and the driven shaft sleeve, a plurality of driving shaft sleeve notches are formed and are arranged along the length direction of the driving shaft sleeve; the driving shaft sleeve convex blocks are arranged along the circumferential direction of the driving shaft sleeve and are integrally V-shaped.
In one preferred embodiment, the first end part of the driven shaft sleeve is matched with the driven wheel, the outer surface of the second end part is provided with a driven shaft sleeve locking boss, and the second end part is provided with a driven shaft sleeve notch; the driven shaft sleeve is in cross fit with the driving shaft sleeve through a driven shaft sleeve notch; the driven shaft sleeve locking boss is used for fixing the driven wheel assembly on the axle.
In order to facilitate the cross fit of the driving shaft sleeve and the driven shaft sleeve, a plurality of driven shaft sleeve notches are formed and are arranged along the length direction of the driven shaft sleeve; the driven shaft sleeve locking boss is arranged along the circumferential direction of the driven shaft sleeve and is integrally V-shaped.
Compared with the prior art, the invention has the beneficial effects that: the locking device is arranged in the middle of the variable-track wheel set, only one set of locking device is needed for each wheel set, the left and right wheels can be unlocked/locked simultaneously, the operation is convenient, and the performance is reliable.
Drawings
FIG. 1 is a schematic illustration of a variable gauge wheel set of the present invention;
FIG. 2 is a schematic illustration of an axle housing of the present invention;
FIG. 3 is a schematic illustration of an axle assembly of the present invention;
FIG. 4 is a schematic illustration of the active wheel composition of the present invention;
FIG. 5 is a schematic illustration of an active wheel of the present invention;
FIG. 6 is a schematic view of an active bushing of the present invention;
FIG. 7 is a schematic illustration of an axle of the present invention;
FIG. 8 is a schematic view of the driven wheel assembly of the present invention;
FIG. 9 is a schematic view of an driven bushing of the present invention;
FIG. 10 is a schematic view of a driven wheel of the present invention;
FIG. 11 is a schematic view of a geared hub of the present invention;
FIG. 12 is a schematic view of a locking device of the present invention;
FIG. 13 is a schematic view of a locking unit of the present invention;
FIG. 14 is a schematic diagram of a control block of the present invention;
FIG. 15 is a schematic view of a latch segment of the present invention; wherein a) is a front view and b) is another side view;
FIG. 16 is a schematic view of a positioning block of the present invention;
FIG. 17 is a schematic view of the principle of limiting the locking unit by the positioning block of the present invention;
FIG. 18 is a schematic view of a support cartridge of the present invention;
FIG. 19 is a schematic view of a rolling circle of the present invention;
FIG. 20 is a schematic locking view of the locking device of the present invention;
FIG. 21 is an unlocking schematic of the locking device of the present invention;
FIG. 22 is a schematic locking view of the axle of the present invention;
FIG. 23 is a schematic view of a ground track gauge conversion apparatus of the present invention;
FIG. 24 is a carrier bar/limit bar schematic of the present invention;
FIG. 25 is a functional block diagram of a ground track gauge conversion apparatus of the present invention;
FIG. 26 is a cross-sectional view of the variable gauge wheel set of the present invention entering a ground gauge changer;
fig. 27 is a schematic view of a conventional ground track gauge changer.
In the drawings
An A-axle box; b, assembling a wheel shaft; a C-gear hub; d-locking device; g-ground track gauge conversion device; a1-a transverse limit surface of the axle box; a2-vertical bearing surface of axle box; b1-active wheel composition; b2-axle; b3-driven wheels; b11-active wheels; b12-driving shaft sleeve; b111-active wheel bumps; b112-active wheel spline; b121-active sleeve bump; 122-driving sleeve spline; b123-active sleeve notch; b124-active shaft sleeve locking boss; b21-shaft extension; b22-axle spline; b23-axle locking boss; b31-driven shaft sleeve; b32-driven wheels; b311-driven shaft sleeve locking boss; b312-driven sleeve notch; b321—driven wheel spline; c1-gear hub splines; c2-a gear box bearing mounting surface; c3-a gear ring mounting surface; c4-gear hub bearing surface; c5-a gear hub locking boss; d1-a locking unit; d2-positioning blocks; d3—a support cylinder; d4-rolling rings; d11-supporting rods; d12-springs; d13—control block; d14-a pin shaft; d15—a locking block; d131-a rolling ring mounting portion; d132—spring mounting holes; d133-controlling block inclined plane; a D134-Z slot; d135—control block positioning table; d136-control block side positioning surface; d151—pin holes; d152-the outer side positioning surface of the locking block; d153—locking block locking notch; d154—end faces of locking blocks; d155, a locating surface on the inner side of the locking block; d156—lock block ramp; d21-positioning block side positioning surfaces; d22-positioning block arc surfaces; d23-positioning surfaces of the positioning block grooves; d24—bottom edge locating surface; d31-support the front cover of the cylinder; d32—supporting the barrel body; d33—a support barrel rear cover; d311—front cover mounting holes; d312-front cover support bar holes; d321-an inner hole of the cylinder; d322—a barrel slot; d331—back cover support rod holes; d41-rolling ring extrusion surface; d42—rolling ring mounting groove; g1-first line butt-joint rail; g2—carrier bars; g3-limiting strips; g4-a wheel-moving rail; g5—unlock rail; g6-second line butt joint rail; g21-a rolling guide rail block; g41-a horizontal section of the wheel-moving rail; g42-wheel-rail-tilting section; g51-unlocking a track widening section; g52-unlocking a constant-width section of the rail; a/c-unlocking/locking section; b-a wheel moving section.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.
The locking device of the variable-track bogie is arranged in the middle of a variable-track wheel pair and mainly comprises a plurality of locking units D1, a plurality of positioning blocks D2, a supporting cylinder D3 and a rolling ring D4. When the bogie passes through the ground track gauge conversion device arranged at the junction of the two track gauges, the locking device automatically realizes unlocking/locking under the guidance of the unlocking track, so that the wheels can/cannot move relative to the axle.
As shown in fig. 1, the variable gauge wheel set of the present invention comprises two axle boxes a, a set of axle assemblies B, a gear hub C, and a set of locking devices D located in the middle of the axle. Axle box A installs the both ends at shaft equipment B, and gear hub C installs the middle part at shaft equipment B, and locking device D then installs in gear hub C one end.
Compared with the conventional bogie, the variable-track bogie has the main characteristics that the variable-track bogie is provided with the variable-track wheel pair, wheels of the variable-track wheel pair can axially move to two different positions to adapt to two different track gauges, and components of the bogie except for the wheel pair, a suspension system, a traction device and the like do not need to be changed or only need to be changed in a local adaptability mode.
As shown in fig. 2, the bottom of the axle box a is provided with an axle box transverse limiting surface A1 and an axle box vertical bearing surface A2. In the track change stage, the axle box transverse limiting surface A1 is contacted with the rolling surface of the limiting strip G3 in the ground track gauge conversion device G to limit the transverse position of the wheel set so as to enable the wheel set to be at an ideal track change position; the axle box vertical bearing surface A2 contacts with the rolling surface of the bearing strip G2 in the ground track gauge changer G to bear the weight of the vehicle. At this time, the wheels are out of contact with the rails G1 or G6 in the ground gauge changer G, and the wheels are unloaded in preparation for their lateral movement or unlocking or locking.
As shown in fig. 3, the axle assembly B is composed of a driving wheel assembly B1, an axle B2, and a driven wheel assembly B3. When the bogie operates normally, the wheel axle assembly is locked by the locking device; when the bogie passes the ground track gauge changer, the locking device is unlocked and the wheel is axially movable relative to the axle.
As shown in fig. 4, the driving wheel assembly B1 is composed of one driving wheel B11 and one driving bushing B12.
As shown in fig. 5, the hole of the driving wheel B11 is provided with a driving wheel spline B112, and the inner end surface is provided with a circle of driving wheel protruding blocks B111. The driving wheel spline B112 mates with the axle spline B22 on the axle B2. When the locking device D is unlocked, the spline fit can enable the driving wheel B11 to axially slide; when the locking device D is locked, the spline fit again allows transmission of drive torque between the driving wheel B11 and the axle B2. The driving wheel lug B111 is matched with a driving shaft sleeve lug B121 arranged at the end part of the driving shaft sleeve B12, so that driving torque can be transmitted between the driving wheel B11 and the driving shaft sleeve B12.
As shown in fig. 6, a circle of driving shaft sleeve protruding blocks B121 are arranged at the end part of the driving shaft sleeve B12, driving shaft sleeve spline B122 is arranged on the outer diameter of the middle part, 4 driving shaft sleeve notches B123 are uniformly formed in the circumferential direction at the other end, and two V-shaped driving shaft sleeve locking bosses B124 are arranged on the outer surface. The driving shaft sleeve convex block B121 is matched with the driving wheel convex block B111 arranged on the inner side end face of the driving wheel B11, and can transmit driving torque. The driving sleeve spline B122 is engaged with the gear hub spline C1 inside the gear hub C, and can transmit driving torque. The driving sleeve notch B123 facilitates the crossing of the driving sleeve B12 and the driven sleeve B31. The driving hub locking boss B124 is used to secure the driving wheel assembly B1 to the axle B2.
As shown in fig. 7, the two ends of the axle B2 are respectively provided with an axle extension B21 and an axle spline B22, and the middle part is provided with 4V-shaped axle locking bosses B23 which are uniformly arranged in the circumferential direction. Shaft extension B21 is used to mount axlebox bearings to support the axlebox. Axle spline B22 is for mating with driving wheel spline B112 and driven wheel spline B321. When the locking device D is unlocked, the spline fit can enable the driving wheel B11 and the driven wheel B32 to axially slide; when the locking device D is locked, the spline engagement again allows transmission of drive torque between the driving and driven wheels B11 and B32 and the axle B2. The axle locking boss B23 is used for fixing the driving wheel assembly B1 and the driven wheel assembly B3 through the locking device D.
As shown in fig. 8, the driven wheel assembly B3 is composed of one driven bushing B31 and one driven wheel B32.
As shown in fig. 9, one end of the driven shaft sleeve B31 is uniformly provided with 4 driven shaft sleeve notches B312 in the circumferential direction, and two V-shaped driven shaft sleeve locking bosses B311 are provided on the outer surface. Driven bushing notch B312 facilitates intersection of driven bushing B31 with driving bushing B12. The driven axle sleeve locking boss B311 is used to fix the driven wheel assembly B3 to the axle B2.
As shown in fig. 10, driven wheel spline B321 is provided in the driven wheel B32 hole. The driven wheel spline B321 mates with the axle spline B22 on the axle B2. When the locking device D is unlocked, the spline fit can enable the driven wheel B32 to axially slide; the spline fit, in turn, allows transmission of drive torque between the driven wheel B32 and the axle B2 when the locking device D is locked.
As shown in fig. 11, the gear hub C has a gear hub spline C1 in the inner hole, a gear ring mounting surface C3 in the middle, a gear box bearing mounting surface C2 on each of the outer surfaces of both sides of the gear ring mounting surface C3, a gear hub support surface C4 and a gear hub locking boss C5 on one outer surface. The gear hub spline C1 cooperates with the driving sleeve spline B122, so that the gear hub C can transmit driving torque to the axle assembly B, and the driving wheel assembly B1 can axially slide relative to the gear hub C. The ring gear mounting face C3 is used for mounting the external ring gear to constitute a complete gear. The gear case bearing mounting surface C2 is for mounting a rolling bearing to support the gear case. The gear hub bearing surface C4 mates with the front cover mounting aperture D311 for supporting the locking device D. The gear hub locking boss C5 is used for fixing the locking block D15.
As shown in fig. 12, the locking device D is composed of 6 locking units D1, 6 positioning blocks D2, one supporting cylinder D3, and two rolling rings D4. The locking unit D1 and the positioning block D2 are uniformly distributed in the supporting cylinder D3 in a circumferential manner. The locking unit D1 and the positioning block D2 are spaced apart from each other. The positioning block D2 is fixed in the supporting cylinder D3. The two rolling rings D4 are connected with the locking unit and are arranged outside the supporting cylinder D3. The locking device D is used for locking the driving wheel assembly B1 and the driven wheel assembly B3 to the axle B2 or unlocking the driving wheel assembly B1 and the driven wheel assembly B3 from the axle B2.
As shown in fig. 13, the locking unit D1 is composed of a support bar D11, a spring D12, a control block D13, two pins D14, and a locking block D15. The locking unit D1 is used for converting the axial movement of the control block D13 into the radial movement of the locking block D15, thereby realizing the locking and unlocking of the locking device D. When the bogie normally operates, the locking unit D1 is in a locking state; when changing the gauge, the locking unit D1 is in an unlocked state.
The support rod D11 is fixedly installed in the front cover support rod hole D312 or the rear cover support rod hole D331 of the support cylinder D3 for supporting the spring D12.
The spring D12 is a cylindrical helical compression steel spring, is arranged on the supporting rod D11 and is positioned in a spring mounting hole D132 of the control block D13 and is used for providing restoring force and locking force for the locking device D.
As shown in fig. 14, the control block D13 is provided with a rolling ring mounting portion D131, a spring mounting hole D132, two control block inclined surfaces D133, two Z-shaped grooves D134, two control block positioning tables D135, and two control block side positioning surfaces D136. The rolling ring mounting portion D131 is for connection with the rolling ring D4. The spring mounting hole D132 is for receiving the spring D12. The control block inclined surface D133 cooperates with the locking block inclined surface D156 for maintaining or releasing the locking state of the locking block D15. Z-shaped slot D134 limits the path of movement of pin D14. The lower part of the control block positioning table D135 is an arc surface, contacts with a cylinder inner hole D321 of the supporting cylinder body D32, and radially positions the control block D13; the upper part is a plane, contacts with the bottom edge locating surface D24 of the locating block D2, and limits the control block D13 to axially slide only. The control block side positioning surface D136 contacts the lock block inner side positioning surface D155 of the lock block D15 for restricting the rotation of the lock block D15.
The pin shaft D14 is fixedly arranged in the pin hole D151 of the locking block D15 and extends into the Z-shaped groove D134 of the control block D13 so as to control the relative movement of the locking block D15 and the control block D13.
As shown in a) and b) of fig. 15, the locking block D15 is provided with two pin holes D151, two locking block outer side positioning surfaces D152, two locking block locking recesses D153, two locking block end surfaces D154, two locking block inner side positioning surfaces D155, and two locking block inclined surfaces D156. The pin hole D151 is used for fixing the mounting pin D14. One locking block locking notch D153 is used for fixing the locking block D15 on the gear hub locking boss C5, and the other locking block locking notch D153 is used for locking the axle locking boss B23, the driving shaft sleeve locking boss B124 and the driven shaft sleeve locking boss B311 into a whole. The locking block outer side positioning surface D152 is contacted with the positioning block side positioning surface D21 of the positioning block D2, the locking block inner side positioning surface D155 is contacted with the control block side positioning surface D136 of the control block D13, the locking block end surface D154 is contacted with the positioning block groove positioning surface D23 of the positioning block D2, and the installation position and the movement direction of the locking block D15 are limited together. The locking block inclined surface D156 cooperates with the control block inclined surface D133 for maintaining or releasing the locking state of the locking block D15.
As shown in fig. 16, the positioning block D2 is provided with two positioning block side positioning surfaces D21, one positioning block circular arc surface D22, four positioning block groove positioning surfaces D23, and two bottom edge positioning surfaces D24. The positioning block arc surface D22 is fixedly arranged on the cylinder inner hole D321 of the supporting cylinder D3.
As shown in fig. 17, the principle of limiting the locking unit by the positioning block is as follows: the notch formed by the positioning block side positioning surface D21 and the positioning block groove positioning surface D23 is used for placing the locking block D15 and limiting the locking block D15 to move radially only; the bottom edge positioning surface D24 contacts with the upper plane of the control block positioning table D135, and restricts the control block D13 to axially slide only.
As shown in fig. 18, the support cylinder D3 is composed of a support cylinder front cover D31, a support cylinder body D32, and a support cylinder rear cover D33. The three are connected to form a hollow cavity for installing the locking unit D1 and the positioning block D2.
The front cover D31 of the supporting cylinder is provided with a front cover mounting hole D311 and three front cover supporting rod holes D312. The front cover mounting hole D311 cooperates with the gear hub bearing surface C4 for supporting the locking device D on the gear hub C. The front cover support lever hole D312 is used for fixedly mounting the support lever D11.
The supporting cylinder body D32 is provided with a cylinder body inner hole D321 and six cylinder body notches D322. The cylinder inner hole D321 is used for fixing the positioning block D2 and radially positioning the control block D13. The cartridge slot D322 is used to provide mounting and axial movement space for the rolling ring mounting portion D131 of the control block D13.
Three rear cover support rod holes D331 are arranged on the rear cover D33 of the support cylinder. The rear cover support bar hole D331 is used for fixedly mounting the support bar D11.
As shown in fig. 19, the rolling ring D4 is provided with a rolling ring pressing surface D41 and three rolling ring mounting grooves D42. The rolling ring extrusion surfaces D41 are subjected to wear-resistant reinforcement treatment so as to adapt to lateral extrusion and friction of the unlocking rail G5, and the distance between the rolling ring extrusion surfaces D41 of the two rolling rings D4 is automatically adapted to the width of the unlocking rail G5, so that the control block D13 is driven to axially move to lock or unlock the locking device D. The rolling ring mounting groove D42 is used for mounting the rolling ring mounting portion D131 on the control block D13.
As shown in fig. 20, the unlocking process of the locking device D is: the bogie is driven into the ground track gauge changer G, the unlocking rail G5 enters between two rolling rings D4 of the locking device D, the two rolling rings D4 are squeezed out by the gradually widened unlocking rail G5 along with the advancing of the bogie, the rolling rings D4 drive a control block D13 connected together to move outwards axially, a spring D12 is compressed, a pin shaft D14 moves along a Z-shaped groove D134, the pin shaft D14 moves outwards axially due to the limitation of the Z-shaped groove D134 and simultaneously moves outwards radially, a locking block D15 connected together is driven to move outwards radially, a locking block locking notch D153 is separated from a locking position, the locking device D is unlocked, and a driving wheel component B1 and a driven wheel component B3 are in an axially movable state.
As shown in fig. 21, the locking process of the locking device D is: after the driving wheel assembly B1 and the driven wheel assembly B3 axially move in place, as the bogie continues to advance, the unlocking rail G5 gradually narrows, under the action of the restoring force of the springs D12, the two rolling rings D4 are folded towards the middle, the rolling rings D4 drive the control block D13 connected together to axially move towards the middle, meanwhile, the pin shaft D14 moves along the Z-shaped groove D134, and due to the limitation of the Z-shaped groove D134, the pin shaft D14 axially moves towards the middle and simultaneously generates radially inwards to drive the locking block D15 connected together to also radially inwards move, so that the locking block locking notch D153 enters a locking position, the locking device D locks, and the driving wheel assembly B1 and the driven wheel assembly B3 are in a locking state.
As shown in fig. 22, the locking mode of the axle assembly is: when the driving wheel assembly B1 and the driven wheel assembly B3 move in place, the axle locking boss B23, the driving shaft sleeve locking boss B124 and the driven shaft sleeve locking boss B311 are overlapped into a complete circle (the V-shaped side surfaces of the bosses are overlapped) in the circumferential direction, and are covered by the locking notch D153 at the same time, so that the driving wheel assembly B1 and the driven wheel assembly B3 cannot move mutually, namely, in a locking state, the driving wheel assembly B1 and the driven wheel assembly B3 are axially locked on the axle B2. When the locking block locking notch D153 is radially removed, the axle locking boss B23, the driving shaft sleeve locking boss B124 and the driven shaft sleeve locking boss B311 are axially out of limit and can mutually axially move, namely, the locking state is achieved.
The track changing operation of the track changing bogie is completed by the guidance of the ground track changing device G. The ground gauge changer G is installed in the middle of two different gauge lines. In the process that the variable-gauge bogie passes through the ground gauge changer G, a specific structure in the ground gauge changer G can automatically trigger the unlocking-moving wheel-locking actions of the variable-gauge wheel pair in sequence, so that the bogie finishes gauge change.
As shown in fig. 23, the ground track gauge changer G is composed of a pair of first line butt rails G1, two rows of carrier bars G2, two rows of stopper bars G3, two sets of wheel moving rails G4, an unlocking rail G5, and a pair of second line butt rails G6. The first circuit butt joint rail G1 is externally connected with a first circuit, the second circuit butt joint rail G6 is externally connected with a second circuit, and the track gauges of the first circuit and the second circuit are different. Two sides are respectively provided with a row of bearing bars G2 for bearing the weight of the vehicle; two sides are respectively provided with a row of limiting strips G3 for limiting the transverse position of the wheel set. And two groups of wheel moving rails G4 are respectively arranged at two sides and are connected with the first line butt joint rail G1 and the second line butt joint rail G6 for guiding the wheels to move transversely. An unlocking rail G5 is arranged in the middle and is used for guiding the locking device D to unlock and lock.
As shown in fig. 23, the wheel-moving rail G4 is composed of two rails having a distance slightly greater than the width of the rim of the wheel, and is divided into a wheel-moving rail horizontal section G41 at both ends and a wheel-moving rail inclined section G42 in the middle. The horizontal segment G41 of the wheel rail is used to maintain the lateral position of the wheel during unlocking or locking. The wheel-rail inclination section G42 is used to guide the wheel to move laterally.
As shown in fig. 23, the unlocking rail G5 is a rail bar with a thick middle part at the two ends, and is divided into an unlocking rail widening section G51 at the two ends and an unlocking rail constant width section G52 in the middle. The unlocking rail width-changing section G51 is used for guiding the locking device D to unlock or lock, and the unlocking rail constant width section G52 is used for ensuring that the locking device D keeps an unlocking state in the moving process of the wheels.
As shown in fig. 24, the carrier bar G2 and the stopper bar G3 are each composed of rolling guide blocks G21 arranged in a row. The rolling guide rail block G21 is a universal independent structural component, has high bearing capacity and good rolling property, and is convenient for maintaining the stability of the track changing process of the track changing bogie.
As shown in fig. 25, the ground track gauge changer G can be functionally divided into three sections a, b and c, wherein the sections a and c are locking/unlocking sections, and the section b is a wheel moving section. The horizontal section G41 of the wheel moving rail and the wide section G51 of the unlocking rail are positioned in the section a and the section c, the inclined section G42 of the wheel moving rail and the constant width section G52 of the unlocking rail are positioned in the section b.
As shown in fig. 26, when a change from the first line to the second line is required, the track gauge change process is as follows:
and I, unlocking. The wheel set is driven into the unlocking section a of the ground track gauge change device G via the first line coupling rail G1. The axle box transverse limit surface A1 at the bottom of the axle box A contacts with the rolling surface of the limit bar G3, so that the transverse position of the wheel set is limited; meanwhile, the vertical bearing surface A2 of the axle box at the bottom of the axle box A is contacted with the rolling surface of the bearing strip G2, so that the weight of the vehicle is born; the wheel falls into the groove of the wheel moving rail G4, the side surface of the rim of the wheel is limited by the wheel moving rail G4, and the wheel is out of contact with the first line butt joint rail G1. At this point the axle boxes are loaded, the wheels are unloaded, and the gauge change begins. The unlocking rail widening section G51 is gradually widened, and the rolling ring D4 is moved outwards to drive the locking device D to unlock.
II, a moving wheel. The wheel set enters the wheel moving section b of the ground track gauge changer G. The wheel-moving rail inclined section G42 clamps the wheels to transversely move so as to complete the rail gauge change. In the process, the limiting strip G3 limits the transverse position of the wheel set, the bearing strip G2 bears the weight of the vehicle, and the unlocking rail constant width section G52 enables the locking device D to be in an unlocking state.
III, locking. The wheel set enters the locking section c of the ground gauge changer G. The unlocking rail widening G51 becomes gradually narrower, the rolling ring D4 is gradually released from the restriction, and the locking device D completes the locking under the restoring force of its spring D12. Then the axle box transverse limiting surface A1 is separated from contact with the limiting strip G3, the axle box vertical bearing surface A2 is also separated from contact with the bearing strip G2, and the wheels are separated from the wheel moving rail G4 and contacted with the second line butt joint rail G6. At this time, the axle box is unloaded, the wheels bear load, and the track gauge change is finished.
When the second line is required to be converted to the first line, the wheel set enters the ground track gauge conversion device G through the second line butt joint rail G6, and exits from the first line butt joint rail G1, c is an unlocking section, a is a locking section, and the track gauge conversion process is identical. The ground gauge change device G and the gauge change bogie are thus reversibly reversible.
The foregoing examples are set forth in order to provide a more thorough description of the present invention, and are not intended to limit the scope of the invention, since modifications of the invention in various equivalent forms will occur to those skilled in the art upon reading the present invention, and are within the scope of the invention as defined in the appended claims.
Claims (9)
1. A locking device of a variable gauge bogie, characterized in that: the locking device is used for locking the driving wheel assembly (B1) and the driven wheel assembly (B3) to the axle (B2) or unlocking the driving wheel assembly (B1) and the driven wheel assembly (B3) from the axle (B2); the locking device comprises a supporting cylinder (D3) which is sleeved outside the axle (B2), 6 locking units (D1) and 6 positioning blocks (D2) which are circumferentially arranged in the supporting cylinder (D3), and 2 rolling rings (D4) which are arranged outside the 1 supporting cylinder (D3);
the rolling ring (D4) is provided with a rolling ring extrusion surface (D41) and three rolling ring mounting grooves (D42); the rolling ring mounting groove (D42) is used for mounting a rolling ring mounting part (D131) on the control block (D13);
the locking unit (D1) and the positioning block (D2) are mutually separated, and the rolling ring (D4) is connected with the locking unit (D1); the locking unit (D1) comprises a control block (D13), a locking block (D15) arranged on the control block (D13), a supporting rod (D11) and a spring (D12) arranged in the control block (D13), and a pin shaft (D14) arranged on the locking block (D15); the axial movement of the control block (D13) can be converted into radial movement of the locking block (D15) so as to realize locking and unlocking of the locking device (D);
The locking unit (D1) is in a locking state when the bogie normally operates, and is in an unlocking state when the bogie changes track gauge;
the control block (D13) is provided with a rolling ring mounting part (D131), a spring mounting hole (D132), two control block inclined planes (D133), two Z-shaped grooves (D134), two control block positioning tables (D135) and two control block side positioning surfaces (D136); the rolling ring mounting part (D131) is used for being connected with a rolling ring (D4); the spring mounting hole (D132) is used for accommodating a spring (D12); the control block inclined plane (D133) is matched with the locking block inclined plane (D156) to enable the locking block (D15) to be kept or unlocked.
2. The locking device of a variable gauge bogie according to claim 1, characterized in that the active wheel assembly (B1) comprises an active wheel (B11) and an active bushing (B12);
the driven wheel assembly (B3) comprises a driven shaft sleeve (B31) and driven wheels (B32);
the driving shaft sleeve (B12) is in cross fit with the driven shaft sleeve (B31), and a locking device (D) is arranged at the matched position of the driving shaft sleeve (B12) and the driven shaft sleeve (B31);
the driving wheel (B11) cooperates with the axle (B2) in two states: the driving wheel (B11) can axially slide relative to the axle (B2) during unlocking, and driving torque can be transmitted between the driving wheel (B11) and the axle (B2) during locking;
The driven wheel (B32) cooperates with the axle (B2) in two states: the driven wheel (B32) can axially slide relative to the axle (B2) during unlocking, and driving torque can be transmitted between the driven wheel (B32) and the axle (B2) during locking.
3. The locking device of a variable gauge bogie according to claim 1, wherein the supporting rod (D11) is fixedly installed in a front cover supporting rod hole (D312) or a rear cover supporting rod hole (D331) of the supporting cylinder (D3) for supporting the spring (D12); the spring (D12) is arranged on the supporting rod (D11), and the spring (D12) is positioned in a spring mounting hole (D132) of the control block (D13) and is used for providing restoring force and locking force for the locking device (D).
4. A locking device for a variable gauge bogie as claimed in claim 3, characterised in that the spring (D12) is a cylindrical helical compression steel spring.
5. The locking device of a variable gauge bogie according to claim 1, characterized in that the Z-shaped groove (D134) is used to limit the movement path of the pin (D14);
the lower part of the control block positioning table (D135) is contacted with a cylinder inner hole (D321) of the supporting cylinder body (D32) and is used for radially positioning the control block (D13); the upper part of the control block positioning table (D135) is contacted with a bottom edge positioning surface (D24) of the positioning block (D2) and is used for limiting the control block (D13) to axially slide only;
The control block side positioning surface (D136) is contacted with the locking block inner side positioning surface (D155) of the locking block (D15) and is used for limiting the rotation of the locking block (D15);
the pin shaft (D14) is fixedly arranged in a pin hole (D151) of the locking block (D15) and extends into a Z-shaped groove (D134) of the control block (D13) to control the relative movement of the locking block (D15) and the control block (D13).
6. The locking device of a variable gauge bogie as claimed in claim 5, wherein the control block positioning table (D135) has a circular arc surface at a lower portion and a flat surface at an upper portion.
7. A locking device for a variable gauge bogie according to claim 3, wherein the locking block (D15) is provided with two pin holes (D151), two locking block outer side positioning surfaces (D152), two locking block locking recesses (D153), two locking block end surfaces (D154), two locking block inner side positioning surfaces (D155), and two locking block inclined surfaces (D156);
the pin hole (D151) is used for fixing the mounting pin shaft (D14); one of the two locking block locking notches (D153) is used for fixing the locking block (D15) on the gear hub locking boss (C5), and the other locking block is used for locking the axle locking boss (B23), the driving shaft sleeve locking boss (B124) and the driven shaft sleeve locking boss (B311) into a whole; the locking block outer side positioning surface (D152) is in contact with the positioning block side positioning surface (D21) of the positioning block (D2), the locking block inner side positioning surface (D155) is in contact with the control block side positioning surface (D136) of the control block (D13), the locking block end surface (D154) is in contact with the positioning block groove positioning surface (D23) of the positioning block (D2), and the locking block outer side positioning surface (D152), the locking block inner side positioning surface (D155) and the locking block end surface (D154) limit the installation position and the movement direction of the locking block (D15) together;
The locking block inclined plane (D156) is matched with the control block inclined plane (D133) and is used for enabling the locking block (D15) to be kept or unlocked.
8. The locking device of the variable track bogie according to any one of claims 1 to 7, wherein two positioning block side positioning surfaces (D21), one positioning block arc surface (D22), four positioning block groove positioning surfaces (D23), and two bottom edge positioning surfaces (D24) are provided on the positioning block (D2);
the positioning block arc surface (D22) is fixedly arranged on a cylinder inner hole (D321) of the supporting cylinder (D3).
9. The locking device of a variable gauge bogie as defined in any one of claims 1 to 7, wherein the support cylinder (D3) includes a support cylinder body (D32), a support cylinder front cover (D31) attached to a front end of the support cylinder body (D32), and a support cylinder rear cover (D33) attached to a rear end of the support cylinder body (D32); the supporting cylinder front cover (D31), the supporting cylinder body (D32) and the supporting cylinder rear cover (D33) are connected to form a hollow cavity for installing the locking unit (D1) and the positioning block (D2);
the front cover (D31) of the supporting cylinder is provided with a front cover mounting hole (D311), and the front cover mounting hole (D311) is used for supporting the locking device (D) on the gear hub (C) in cooperation with the gear hub supporting surface (C4) of the gear hub;
The supporting cylinder body (D32) is provided with a cylinder body inner hole (D321) and six cylinder body notch (D322); the cylinder inner hole (D321) is used for fixing the positioning block (D2) and radially positioning the control block (D13); the cartridge slot (D322) is used for providing installation and axial movement space for a rolling ring installation part (D131) of the control block (D13).
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| CN201911099222 | 2019-11-12 |
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