Heavy duty railway locomotive turntable

Abstract

The present application relates to a kind of heavy railway locomotive turntable, belong to railway production maintenance equipment technical field.The present application is used to complete the head change of railway double heavy locomotive.The main technical features are: center support seat (22) vertical welding is carried out on center embedded steel plate assembly (31), as the rotation center of locomotive turntable;Thrust joint bearing (21) is sleeved on center shaft sleeve (24), and the weight of locomotive is transmitted to center support seat (22) by bearing beam assembly (7) transmission;Bearing beam assembly (7) is welded on the main beam (3) of car frame and becomes an integral whole;Hollow shaft (29) is inserted into the inner hole of center shaft sleeve (24);Ground power line is threaded from cable line threading steel pipe outlet (32), enters into rotation center power supply device (6), and then to driver's room electrical control system.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of railway vehicle inspection equipment, and particularly relates to a heavy-load railway locomotive turntable. BACKGROUND

[0002] Railway transportation plays an important role in the economic development of China. Railway locomotives are the power for pulling trains to run. Since there are curves in railway lines, the wheel flanges and tread surfaces of the wheels on both sides of the railway locomotive bogie are unevenly worn during the running of the railway locomotive along the railway line. In order to reduce the safety hazards caused by excessive wear on the railway locomotive, the railway locomotive needs to be regularly turned around for operation so that the wheel flanges and tread surfaces of the wheels on both sides are basically consistent.

[0003] The traditional equipment for turning around operation is "bulb line" and "triangle line". The "bulb line" and "triangle line" are to lay a curve track on the ground. According to the operation regulations, the railway locomotive walks on the curve track to complete the turning (also called reversing) operation. With the development of science and technology, a locomotive turntable appears. The locomotive turntable is a device installed in a circular pit and can rotate around the center of the pit. The upper surface of the locomotive turntable is installed with a track for the locomotive to walk. The railway locomotive is opened to the turntable, the turntable is rotated by 180 degrees, and the turning (reversing) operation of the locomotive is completed.

[0004] The locomotive turntable has many advantages over the "bulb line" and "triangle line": saving equipment manufacturing cost, saving land area and civil construction cost, and reducing operation process time. With the further development of China's economy and technology, railway transportation is developing towards high speed and heavy load, and more double heavy-load locomotives are needed. The double heavy-load locomotives are heavy and have longer car bodies. The traditional structure of the turntable will cause high manufacturing cost, deep foundation pit, and large investment cost. SUMMARY

[0005] The present application is designed to overcome the shortcomings of the prior art and provides a heavy-load railway locomotive turntable. The purpose of the present application is achieved by the following measures:

[0006] A heavy-duty railway locomotive turntable comprises a driving wheel assembly (1), a frame main beam (3), a driven wheel assembly (4), a frame cross beam (5), a rotary center power supply device (6), a load bearing beam assembly (7), and a rotary center disc assembly (8). The rotary center disc assembly (8) is characterized in that a center support seat (22) is vertically welded to a center embedded steel plate assembly (31) at the center of a pit foundation (16), serving as the rotary center of the locomotive turntable. A thrust joint bearing (21) is sleeved on the center shaft sleeve (24) of the center support seat (22), transmitting the weight of the locomotive from the load bearing beam assembly (7) to the center support seat (22) and then to the pit foundation (16). The center positioning ring (12) of the load bearing beam assembly (7) is sleeved on the outer ring of the thrust joint bearing (21), centrally positioning the load bearing beam assembly (7) and ensuring the locomotive turntable to rotate around the center of the pit foundation (16). The two ends of the load bearing beam assembly (7) are welded to the frame main beam (3) to form an integral whole. The hollow shaft (29) of the rotary center power supply device (6) is inserted into the inner hole of the center shaft sleeve (24) of the center support seat (22). The load bearing plate (27), the upper positioning plate (28), the hollow shaft (29), and the lower positioning plate (30) are welded together to form an integral whole. The load bearing plate (27) bears the weight of the rotary center power supply device (6) and is supported on the upper end of the center shaft sleeve (24). The upper positioning plate (28) and the lower positioning plate (30) are clearance-fitted with the inner hole of the center shaft sleeve (24) of the center support seat (22), ensuring the rotary center power supply device (6) to be vertically upward. The upper positioning plate (28) is sleeved on the upper end of the center shaft sleeve (24), with its protruding part embedded in the notch on the upper end of the center shaft sleeve (24) to prevent the hollow shaft (29) from rotating freely. The upper rotary body of the rotary center power supply device (6) is provided with a lifting eye screw 2 (15), and a lifting eye screw 1 (14) is installed on the frame main beam (3) corresponding to the lifting eye screw 2 (15). They are connected by nylon rope (43) and pull the rotary body of the rotary center power supply device (6) to rotate with the locomotive turntable. The ground power cable is led out from the cable line steel pipe outlet (32) on the pit foundation (16), enters the rotary center power supply device (6) through the wire inlet hole below the rotary center disc assembly (8) and the hollow shaft (29) of the rotary center power supply device (6), and then leads out the rotary center power supply device cable (18) from the rotary body of the rotary center power supply device (6) to enter the electrical control system in the cab.

[0007] The heavy load railway locomotive turntable is characterized in that a circle of tracks is additionally arranged in the pit foundation of the existing locomotive turntable, and there are two circles of tracks, i.e. an inner circle of tracks (36) and an outer circle of tracks (34); the side of the turntable frame main beam (3) is provided with a driving wheel assembly (1) and a driven wheel assembly (4); the driving wheel assembly (1) is arranged on the outer circle of tracks (34) close to the end of the frame main beam (3) to provide a large rotary driving torque for the turntable and transfer the weight of the locomotive; and the driven wheel assembly (4) is arranged on the inner circle of tracks (36) to mainly transfer the weight of the locomotive.

[0008] The heavy load railway locomotive turntable is characterized in that the rotary center disc assembly (8) arranged at the center of the pit foundation (16) is composed of a thrust joint bearing (21), a center support seat (22) and a dustproof sealing ring (23); the dustproof sealing ring (23) is arranged between the center positioning ring (12) and the thrust joint bearing (21) to prevent dust from entering the thrust joint bearing (21); the thrust joint bearing (21) supports the load bearing beam assembly (7) on the upper surface and supports the center support seat (22) on the lower surface, which not only can transfer the weight of the locomotive and fix the rotary center of the locomotive turntable, but also allows the load bearing beam assembly (7) to have a large angular error with the frame main beams (3) on both sides, thereby facilitating the on-site construction and installation.

[0009] The heavy load railway locomotive turntable is characterized in that the center support seat (22) is welded and processed from a center shaft sleeve (24), a supporting plate (25) and a rib plate (26) and is welded on the center embedded steel plate assembly (31) to control the rotary operation of the heavy load railway locomotive turntable around the center axis of the pit foundation (16); the inner hole of the center shaft sleeve (24) is used for inserting the rotary center power supply device (6); the lower part is provided with a wire inlet hole for leading the power supply line into the heavy load railway locomotive turntable; and the upper part is provided with a notch for circumferentially positioning the hollow shaft (29) of the rotary center power supply device (6).

[0010] The heavy load railway locomotive turntable is characterized in that the center embedded steel plate assembly (31) is welded from an embedded steel plate (39) and anchor bars (40) and is embedded at the center of the pit foundation (16); the center part of the embedded steel plate (39) is provided with a concrete pouring hole (41) for conveniently pouring concrete to firmly fix the center embedded steel plate assembly (31) at the center of the pit foundation (16).

[0011] Compared with the prior art, the heavy load railway locomotive turntable has the beneficial effects that:

[0012] 1. By increasing the number of wheels on the side of the frame main beam (3) and the rotary center disc assembly (8), the load bearing fulcrum of the frame main beam (3) is increased, the load bearing capacity of the frame main beam (3) is effectively improved, the cross-sectional height of the frame main beam (3) is reduced, the amount of steel is reduced, and the manufacturing cost of the locomotive turntable is saved.

[0013] 2. The cross section height of the frame girder (3) is reduced, which corresponds to the reduction of the depth of the pit foundation (16), so that the cost of the civil foundation is saved, and the relatively shallow pit depth is convenient for the maintenance and safe production of the locomotive turntable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a front view of the locomotive turntable;

[0015] Figure 2 Fig. 2 is a top view of the locomotive turntable;

[0016] Figure 3 Fig. 3 is a left view of the locomotive turntable;

[0017] Figure 4 Fig. 4 is a front view of the bearing beam assembly;

[0018] Figure 5 Fig. 5 is a left view of the bearing beam assembly;

[0019] Figure 6 Fig. 6 is an A-A sectional view of the bearing beam assembly; Figure 1

[0020] Figure 7 Fig. 7 is an assembly diagram of the rotating center disc;

[0021] Figure 8 Fig. 8 is a schematic diagram of the center support seat;

[0022] Figure 9 Fig. 9 is a schematic diagram of the rotating center power supply device;

[0023] Figure 10 Fig. 10 is a sectional view of the pit foundation of the locomotive turntable;

[0024] Figure 11 Fig. 11 is a front view of the assembly of the center embedded steel plate;

[0025] Figure 12 Fig. 12 is a top view of the assembly of the center embedded steel plate;

[0026] Figure 13 Fig. 13 is a front view of the upper positioning plate;

[0027] Figure 14 Fig. 14 is a top view of the upper positioning plate;

[0028] Figure 15 Fig. 15 is a B partial enlarged view of the upper positioning plate; Figure 2

[0029] MARK DESCRIPTION IN DRAWINGS

[0030] ​​1, active wheel assembly, 2, walkway rail assembly, 3, frame girder, 4, driven wheel assembly, 5, frame crossbeam, 6, rotary center power supply device, 7, bearing beam assembly, 8, rotary center disc assembly, 9, cab, 10, cab mounting seat, 11, rib plate, 12, center positioning ring, 13, bearing beam, 14, lifting ring screw 1, 15, lifting ring screw 2, 16, pit foundation, 17, rotary center power supply device incoming cable, 18, rotary center power supply device outgoing cable, 19, traction steel wire rope, 20, rain cover, 21, thrust joint bearing, 22, center support seat, 23, dustproof sealing ring, 24, center shaft sleeve, 25, supporting plate, 26, rib plate, 27, bearing plate, 28, upper positioning plate, 29, hollow shaft, 30, lower positioning plate, 31, center embedded steel plate assembly, 32, cable line threading steel pipe outlet, 33, cable line threading steel pipe inlet, 34, outer ring track, 35, cable line threading steel pipe, 36, inner ring track, 37, water collecting well, 38, drain pipe, 39, embedded steel plate, 40, anchor bar, 41, concrete pouring hole, 42, railway locomotive, 43, nylon rope. DETAILED DESCRIPTION

[0031] The embodiments will be described in detail below with reference to the drawings.

[0032] 1) Working process of the rotary disc: During the operation of the locomotive rotary rail turning, the rotary disc driver and the locomotive driver need to coordinate and interact. After confirming that the track on the rotary disc platform is aligned with the ground track of the locomotive, the rotary disc driver sends a signal to the locomotive driver to allow the locomotive to drive onto the rotary disc. After the locomotive driver drives the locomotive to the middle position of the rotary disc, the rotary disc driver sends a signal to the locomotive driver to allow the rotary disc to rotate. After the rotary disc rotates 180 degrees, the rotary disc driver sends a signal to the locomotive driver to allow the locomotive to drive off the rotary disc. The locomotive driver drives the locomotive off the rotary disc, completing a railway locomotive turning operation.

[0033] 2) Transmission route of the locomotive weight on the rotary disc: locomotive weight - frame girder (3) - active wheel assembly (1), driven wheel assembly (4), and bearing beam assembly (7) - pit foundation (16).

[0034] Among them:

[0035] Active wheel assembly (1) - outer ring track (34) - pit foundation (16).

[0036] Driven wheel assembly (4) - inner ring track (36) - pit foundation (16).

[0037] Bearing beam assembly (7) - thrust joint bearing (21) - center support seat (22) - center embedded steel plate assembly (31) - pit foundation (16).

[0038] The main beam (3) of the frame is added with multiple load supporting points, effectively improving the load bearing capacity of the main beam (3) of the frame. The section parameters of the main beam (3) of the frame are determined by program calculation output data, and within the error range specified in the construction specification of the outer track (34) and the inner track (36), not only can the driving wheel assembly (1) contact the outer track (34), but also the driven wheel assembly (4) can contact the inner track (36).

[0039] 3) The route of the power cable: the power distribution cabinet outside the pit foundation (16) of the locomotive turntable - down into the cable threading steel pipe inlet (33) - cable threading steel pipe (35) - cable threading steel pipe outlet (32) - the center shaft sleeve (24) inlet hole on the center support seat (22) - the hollow shaft (29) inner hole of the rotary center power supply device (6) - into the rotary center power supply device (6) - the rotary center power supply device outlet cable (18) - the electrical control system in the cab (9).

[0040] The rotary center power supply device (6) converts the three-phase five-wire power cable (fixed) threaded out of the cable threading steel pipe (35) into a three-phase five-wire power cable (rotatable) that can rotate with the turntable through its internal brush device, providing power for the driving motor and control electrical appliances of the turntable.

Claims

1. A heavy-duty railway locomotive turntable, comprising a driving wheel assembly (1), a frame main beam (3), a driven wheel assembly (4), a frame cross beam (5), a rotation center power supply device (6), a load bearing beam assembly (7), a rotation center disc assembly (8), characterized in that The center support seat (22) of the rotating center disc assembly (8) is vertically welded on the center embedded steel plate assembly (31) in the center of the pit foundation (16) as the rotating center of the locomotive turntable; the thrust joint bearing (21) is sleeved on the center shaft sleeve (24) of the center support seat (22) to transfer the locomotive weight transmitted by the load-bearing beam assembly (7) to the center support seat (22) and then to the pit foundation (16); the center positioning ring (12) of the load-bearing beam assembly (7) is sleeved on the outer ring of the thrust joint bearing (21) to centrally position the load-bearing beam assembly (7) and ensure the rotation of the locomotive turntable around the center of the pit foundation (16); the two ends of the load-bearing beam assembly (7) are welded on the frame main beam (3) to form an integral whole; the hollow shaft (29) of the rotating center power supply device (6) is inserted into the inner hole of the center shaft sleeve (24) of the center support seat (22); the load-bearing plate (27), the upper positioning plate (28), the hollow shaft (29) and the lower positioning plate (30) are welded and processed as an integral whole, the load-bearing plate (27) bears the weight of the rotating center power supply device (6) and is supported on the upper end of the center shaft sleeve (24); the upper positioning plate (28) and the lower positioning plate (30) are in clearance fit with the inner hole of the center shaft sleeve (24) of the center support seat (22) to ensure the vertical upward movement of the rotating center power supply device (6); the upper positioning plate (28) is sleeved on the upper end of the center shaft sleeve (24) with its protruding part embedded in the notch on the upper end of the center shaft sleeve (24) to prevent the free rotation of the hollow shaft (29); the lifting eye screw 2 (15) is arranged on the upper rotating body of the rotating center power supply device (6), the lifting eye screw 1 (14) is installed on the frame main beam (3) corresponding to the lifting eye screw 2 (15), and they are connected by nylon rope (43) to pull the rotating body of the rotating center power supply device (6) to rotate with the locomotive turntable during the rotation of the locomotive turntable; the ground power supply line is led out from the cable line steel pipe outlet (32) on the pit foundation (16), enters the rotating center power supply device (6) through the wire inlet hole below the rotating center disc assembly (8) and the hollow shaft (29) of the rotating center power supply device (6), and then is led out from the rotating body of the rotating center power supply device (6) as the rotating center power supply device outlet cable (18) to enter the electrical control system in the cab.

2. The heavy duty railroad locomotive turntable as set forth in claim 1, wherein A circle of track is added in the pit foundation of the locomotive turntable, and there are two circles of track: the inner circle track (36) and the outer circle track (34); the driving wheel assembly (1) and the driven wheel assembly (4) are arranged on the side of the turntable frame main beam (3), the driving wheel assembly (1) is arranged on the outer circle track (34) near the end of the frame main beam (3) to provide a larger rotating driving torque for the turntable and transmit the weight of the locomotive, and the driven wheel assembly (4) is arranged on the inner circle track (36) to mainly transmit the weight of the locomotive.

3. The heavy duty railroad locomotive turntable as set forth in claim 1, wherein The rotary center plate assembly (8) in the center of the pit foundation (16) is composed of a thrust joint bearing (21), a center support seat (22) and a dustproof sealing ring (23), the dustproof sealing ring (23) is installed between the center positioning ring (12) and the thrust joint bearing (21), and dust is prevented from entering the thrust joint bearing (21); the thrust joint bearing (21) supports the load beam assembly (7) on the upper surface and the center support seat (22) on the lower surface, which not only can transmit the weight of the locomotive and fix the rotary center of the rotary disc of the locomotive, but also allows the load beam assembly (7) to have a large angular error with the frame girder (3) on both sides, thereby facilitating the on-site construction and installation.

4. The heavy duty railroad locomotive turntable as set forth in claim 1, wherein The center support seat (22) is welded and processed from a center shaft sleeve (24), a supporting plate (25) and a rib plate (26), and is welded on the center embedded steel plate assembly (31). The center support seat (22) controls the rotary operation of the heavy-load railway locomotive rotary disc around the center axis of the pit foundation (16). The inner hole of the center shaft sleeve (24) is used for inserting the rotary center power supply device (6). The lower part of the center shaft sleeve (24) is provided with a wire inlet hole for leading the power supply line into the heavy-load railway locomotive rotary disc. The upper part of the center shaft sleeve (24) is provided with a notch for circumferentially positioning the hollow shaft (29) of the rotary center power supply device (6).

5. The heavy duty railroad locomotive turntable as set forth in claim 1, wherein The center embedded steel plate assembly (31) is welded from an embedded steel plate (39) and anchor bars (40), and is embedded in the center of the pit foundation (16). The center part of the embedded steel plate (39) is provided with a concrete pouring hole (41) for conveniently pouring concrete and firmly fixing the center embedded steel plate assembly (31) in the center of the pit foundation (16).

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