Driving chain wheel structure

Abstract

The utility model discloses a driving chain wheel structure which comprises a cross beam, rails used for being connected with an excavation chain are arranged on the two sides of the cross beam, a stand column is arranged at the top of the rear end of the cross beam, a driving mechanism is arranged on the stand column, an installation groove is formed in the cross beam, a first flange is arranged on the driving mechanism, and a second flange is arranged on the installation groove. The first flange is installed at the position of an installation groove in a clamped mode, a plurality of first fasteners used for fixing the outer ring of the first flange are arranged at the position of the installation groove, an installation hole is formed in the middle of the installation groove, the driving mechanism comprises a wheel shaft penetrating through the installation hole, and a driving chain wheel used for being connected with an excavation chain is detachably arranged at the bottom end of the wheel shaft. A circular boss is arranged on the bottom face of the driving chain wheel, a protection plate located below the driving chain wheel is arranged on the cross beam, and a limiting block used for being matched with the outer ring of the circular boss is arranged on the top face of the protection plate. The device has the advantages of being stable in work, convenient to install and maintain and high in bearing capacity.

Description

TECHNICAL FIELD

[0001] The utility model belongs to railway ballast screening technical field, and specifically relates to an initiative sprocket structure. BACKGROUND

[0002] Ballast screening is to dig out the dirty ballast under the sleeper and screen, and the qualified ballast after screening is backfilled on the line and supplemented with new ballast to form a clean ballast bed. Screening is an important means to restore the performance of the ballast bed, especially in the section where the slurry is long-term transported and the mud is long-term transported, and the screening must be carried out regularly.

[0003] The ballast screening machine generally comprises a power device, a vehicle body, a bogie, a working device and a control system. The working device usually comprises a ballast bed excavating device and a ballast screening device.

[0004] The existing technology has the problem that the radial force is generated to the driving sprocket during the excavating process of the ballast bed excavating device, which easily causes the bending deformation of the sprocket shaft and the displacement of the power device, and affects the working of the device. SUMMARY

[0005] The utility model discloses a kind of initiative sprocket structures, with the advantages of stable work, easy installation and maintenance, strong bearing capacity.

[0006] To achieve the above object, the technical scheme adopted by the utility model is: an initiative sprocket structure, including crossbeam, the two sides of the crossbeam are provided with track for connecting excavating chain, the rear end top of the crossbeam is provided with stand, the stand is provided with driving mechanism, the crossbeam is provided with mounting slot, the driving mechanism is provided with flange one, the flange one is clamped and installed at mounting slot, the mounting slot is provided with a plurality of fasteners one for fixing the outer ring of flange one, the middle part of the mounting slot is provided with mounting hole, the driving mechanism includes wheel shaft passing through mounting hole, the wheel shaft bottom end is detachably provided with initiative sprocket for connecting excavating chain, the bottom surface of the initiative sprocket is provided with circular boss, the crossbeam is provided with protective plate below initiative sprocket, the top surface of the protective plate is provided with limiting block for cooperating with the outer ring of circular boss.

[0007] In the scheme, the track is arranged on both sides of the cross beam to guide and limit the excavating chain, the rear end of the cross beam is provided with a stand, the top of the stand can be used to connect an excavator or other vehicle body, the bottom end of the wheel shaft of the driving mechanism on the stand is connected with a driving sprocket for providing rotating power of the excavating chain, the mounting slot is arranged on the cross beam to clasp and position the flange I, and the driving mechanism is fastened by cooperating with the fastener I to ensure the connection stability of the driving mechanism, the mounting hole is arranged at the mounting slot for the wheel shaft of the driving mechanism to pass through, so as to transmit power to the driving sprocket and the excavating chain, the protection plate is detachably arranged on the cross beam to facilitate the installation and disassembly of the driving sprocket and to protect the bottom of the driving sprocket, and the limiting block on the protection plate is used to cooperate with the circular boss on the bottom surface of the driving sprocket to limit the radial movement of the wheel shaft and the driving sprocket, provide support, avoid deformation and ensure the working stability of the driving sprocket.

[0008] Further, the driving mechanism comprises a motor, the bottom end of the motor is connected with a sleeve, the output shaft of the motor is connected with a wheel shaft located in the middle of the sleeve, the bottom end of the wheel shaft is connected with a driving sprocket, and the driving sprocket and the wheel shaft are provided with a fastener II.

[0009] The motor provides power, the sleeve protects the wheel shaft, the wheel shaft connects the driving sprocket and the output shaft of the motor, and the fastener II between the driving sprocket and the wheel shaft ensures the connection stability.

[0010] Further, an upper bearing is arranged between the top of the sleeve and the wheel shaft, a lower bearing is arranged between the bottom end of the sleeve and the wheel shaft, a nut for cooperating with the lower bearing is arranged on the wheel shaft, and a bearing end cover is arranged at the bottom end of the sleeve.

[0011] The positioning between the sleeve and the wheel shaft is realized by the cooperation of the upper bearing, the lower bearing and the nut, the positioning effect of the wheel shaft is ensured, the bearing end cover is arranged to avoid the influence of impurities on the rotation of the bearing and the wheel shaft.

[0012] Further, a limiting slot is arranged on the top surface of the cross beam, the bottom of the stand is clamped and connected in the limiting slot, and a fastener III for fixing the stand is arranged on the top of the cross beam.

[0013] The bottom of the stand is clamped and limited by the limiting slot, and the stability of the connection between the stand and the cross beam is ensured by cooperating with the fastener III.

[0014] Further, a flange plate for connecting a rotating mechanism is arranged on the top of the stand, and a mounting plate for connecting a ballast lifting mechanism is arranged on the side surface of the stand.

[0015] The rotating mechanism is connected by the flange plate to facilitate the cleaning of the ballast, the mounting plate is arranged to position the ballast lifting mechanism, and the moved gravel excavated by the excavating chain is facilitated.

[0016] Further, the limiting block is annular structure or arc block structure, and the arc block structure is located at the front side of the driving sprocket.

[0017] The outer ring of the circular boss is supported and limited by the annular structure, so that the axle is prevented from being deformed, and when the excavating chain works, the driving sprocket is subjected to a forward pulling force, and the arc block structure is arranged at the front side of the driving sprocket to support the driving sprocket.

[0018] Further, the bottom of the cross beam is detachably connected with the protection plate through fasteners, the bottom end of the axle is connected with a supporting bearing, and the supporting bearing is connected in the middle of the annular structure.

[0019] The protection plate is fastened at the bottom of the cross beam through the fasteners, and the supporting bearing at the bottom of the axle is matched with the annular structure to position the axle in the radial direction, so that the working stability of the axle and the excavating chain is ensured.

[0020] Further, the two sides of the stand are provided with connecting plates, and the connecting plates are provided with fasteners five for being connected with the driving mechanism.

[0021] The connecting plates are arranged to fix the upper part of the driving mechanism and the stand, so that the positioning stability of the driving mechanism is ensured.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] 1. The flange one of the outer ring of the driving mechanism is fixed by arranging the mounting groove on the cross beam, the bottom of the driving sprocket is protected by connecting the protection plate on the cross beam, the limiting block is arranged on the protection plate to cooperate with the circular boss at the bottom of the driving sprocket, the stress deformation of the bottom end of the axle is avoided, the working of the excavating chain is not affected, and the working stability is good;

[0024] 2. The axle is supported and positioned by arranging the sleeve at the bottom of the motor and arranging the bearing in the sleeve, the driving sprocket stably provides power to the excavating chain, the carrying capacity of the excavating chain and the driving sprocket is high, the upper end of the sleeve is connected with the motor through the flange, the lower end of the sleeve is provided with an end cover, impurities are prevented from affecting the rotation of the inner axle, and the working stability is good;

[0025] 3. The motor, the sleeve, the cross beam and the stand are connected through the fasteners, so that installation and maintenance are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure perspective view of the driving sprocket structure of the embodiment 1 of the utility model;

[0027] Figure 2 It is an explosion view of the driving sprocket structure of the embodiment 1 of the utility model;

[0028] Figure 3 Structure sectional view of the driving mechanism in the embodiment 1 of the utility model;

[0029] Figure 4 Structure sectional view of the driving mechanism in the embodiment 2 of the utility model;

[0030] In the drawing: 1, crossbeam; 2, track; 3, stand; 4, motor; 5, sleeve; 6, wheel axle; 7, driving sprocket; 8, installation slot; 9, flange one; 10, fastener one; 11, mounting hole; 12, round boss; 13, guard plate; 14, limit block; 15, fastener two; 16, upper bearing; 17, lower bearing; 18, nut; 19, bearing end cover; 20, limit slot; 21, fastener three; 22, flange plate; 23, mounting plate; 24, fastener four; 25, support bearing; 26, connecting plate; 27, fastener five; 28, sealing ring; 29, flange two. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model. In the description of the utility model, it should be explained that the terms front, back, left, right and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product in common use, which is only for the convenience of describing the utility model or simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the utility model. Embodiment 1

[0032] As Figures 1-3As shown, an active sprocket structure, comprising a crossbeam 1, the two sides of the crossbeam 1 are provided with tracks 2 for connecting the digging chain, the top of the rear end of the crossbeam 1 is provided with a stand 3, the stand 3 is provided with a driving mechanism, the crossbeam 1 is provided with a mounting groove 8, the driving mechanism is provided with a flange 9, the flange 9 is snap-fitted in the mounting groove 8, a plurality of fasteners 10 for fixing the outer ring of the flange 9 are arranged at the mounting groove 8, a mounting hole 11 is formed in the middle of the mounting groove 8, the driving mechanism comprises an axle 6 passing through the mounting hole 11, the bottom end of the axle 6 is detachably provided with an active sprocket 7 for connecting the digging chain, the bottom surface of the active sprocket 7 is provided with a circular boss 12, the crossbeam 1 is provided with a protective plate 13 below the active sprocket 7, the top surface of the protective plate 13 is provided with a limiting block 14 for cooperating with the outer ring of the circular boss 12.

[0033] In the above scheme, the tracks 2 are arranged on both sides of the crossbeam 1 to guide and limit the digging chain, the rear end of the crossbeam 1 is provided with a stand 3, the top of the stand 3 can be used to connect an excavator or other vehicle body, the bottom end of the axle 6 of the driving mechanism on the stand 3 is connected with the active sprocket 7 for providing rotating power for the digging chain, the mounting groove 8 is formed in the crossbeam 1 to snap-fit and position the flange 9, and the fasteners 10 are used to fasten the driving mechanism to ensure the stability of the connection of the driving mechanism, the mounting hole 11 is formed in the mounting groove 8 for the axle 6 of the driving mechanism to pass through, so as to transmit power to the active sprocket 7 and the digging chain, the protective plate 13 is detachably arranged on the crossbeam 1 to facilitate the installation and removal of the active sprocket 7, and to protect the bottom of the active sprocket 7, the limiting block 14 on the protective plate 13 is used to cooperate with the circular boss 12 on the bottom surface of the active sprocket 7 to limit the radial movement of the axle 6 and the active sprocket 7, provide support, avoid deformation, and ensure the working stability of the active sprocket 7.

[0034] The top end of the sleeve 5 is provided with a flange 29, the flange 29 is connected with the flange 3 at the bottom of the motor 4 through fasteners, the bottom surface of the sleeve 5 is provided with a sealing ring 28 matched with the bearing end cover 19 to realize the sealing of the inside of the sleeve 5, avoid impurities entering the inside of the sleeve 5 during work, and affect the rotation of the axle 6. The crossbeam 1 is a box girder structure, and the tracks 2 comprise upper and lower flange plates arranged on the sides of the box girder.

[0035] Further, the driving mechanism comprises a motor 4, the bottom end of the motor 4 is connected with a sleeve 5, the output shaft of the motor 4 is connected with an axle 6 located in the middle of the sleeve 5, the bottom end of the axle 6 is connected with an active sprocket 7, and fasteners 15 are arranged between the active sprocket 7 and the axle 6.

[0036] The motor 4 provides power, the sleeve 5 protects the wheel shaft 6, the wheel shaft 6 connects the driving sprocket 7 and the output shaft of the motor 4, and the fastener two 15 is arranged between the driving sprocket 7 and the wheel shaft 6 to ensure the stability of the connection.

[0037] The driving sprocket 7 is connected with the wheel shaft 6 through the spline, and the radial fastener two 15 is arranged to stabilize the connection.

[0038] Further, the upper bearing 16 is arranged between the sleeve 5 and the top of the wheel shaft 6, the lower bearing 17 is arranged between the sleeve 5 and the bottom end of the wheel shaft 6, the nut 18 is arranged on the wheel shaft 6 for cooperation with the lower bearing 17, and the bottom end of the sleeve 5 is provided with the bearing end cover 19.

[0039] The positioning between the sleeve 5 and the wheel shaft 6 is realized through the cooperation of the upper bearing 16 and the lower bearing 17 and the nut 18, the positioning effect of the wheel shaft 6 is ensured, the bearing end cover 19 is arranged to avoid the influence of impurities on the rotation of the bearing and the wheel shaft 6.

[0040] The bearing end cover 19 is connected to the bottom surface of the sleeve 5 by bolts. The gasket is arranged between the nut 18 and the lower bearing 17, and between the upper bearing 16 and the sleeve 5.

[0041] Further, the top surface of the cross beam 1 is provided with a limiting groove 20, the bottom of the stand column 3 is clamped and connected in the limiting groove 20, and the top of the cross beam 1 is provided with a fastener three 21 for fixing the stand column 3.

[0042] The bottom of the stand column 3 is clamped and limited by the limiting groove 20, and the stability of the connection between the stand column 3 and the cross beam 1 is ensured by cooperating with the fastener three 21.

[0043] The fastener one 10, the fastener two 15, the fastener three 21, the fastener four 24 and the fastener five 27 all include bolts.

[0044] Further, the top of the stand column 3 is provided with a flange plate 22 for connecting a rotary mechanism, and the side surface of the stand column 3 is provided with a mounting plate 23 for connecting a ballast lifting mechanism.

[0045] The rotary mechanism is connected through the flange plate 22 to facilitate the cleaning of the ballast, the mounting plate 23 is arranged to position the ballast lifting mechanism, and the gravel excavated by the excavating chain is moved conveniently.

[0046] Further, the limiting block 14 is in a ring structure or an arc block structure, and the arc block structure is located on the front side of the driving sprocket 7.

[0047] The outer ring of the circular boss 12 is supported and limited by the annular structure, avoiding deformation of the wheel shaft 6, and when the excavating chain works, the driving sprocket 7 is subjected to a forward pulling force, and the arc-shaped block structure is arranged on the front side of the driving sprocket 7 to support the driving sprocket 7.

[0048] The single arc-shaped block structure can be arranged, or multiple arc-shaped block structures arranged symmetrically left and right.

[0049] Further, the two sides of the stand column 3 are provided with a connecting plate 26, and the connecting plate 26 is provided with a fastener five 27 for connecting with the driving mechanism.

[0050] The connecting plate 26 is arranged to fix the upper part of the driving mechanism and the stand column 3, so as to ensure the positioning stability of the driving mechanism.

[0051] The two sides of the sleeve 5 are provided with a fastening plate, and a threaded hole is formed in the fastening plate to screw the fastener five 27. Embodiment 2

[0052] As shown in the drawings, the driving sprocket structure in this embodiment is further changed as follows on the basis of the embodiment 1: Figure 4

[0053] Further, the bottom of the cross beam 1 is detachably connected with a protective plate 13 through a fastener four 24, the bottom end of the wheel shaft 6 is connected with a support bearing 25, and the support bearing 25 is connected in the middle of the annular structure.

[0054] The protective plate 13 is fastened at the bottom of the cross beam 1 by the fastener four 24, and the support bearing 25 at the bottom of the wheel shaft 6 is matched with the annular structure to position the wheel shaft 6 radially, so as to ensure the working stability of the wheel shaft 6 and the excavating chain.

[0055] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.​

Claims

1. A driving sprocket structure, characterized by comprising: The utility model provides a kind of excavator, including crossbeam, the two sides of the crossbeam are provided with track for connecting excavating chain, the top of the rear end of the crossbeam is provided with stand, drive mechanism is provided on the stand, mounting slot is provided on the crossbeam, flange one is provided on the drive mechanism, the flange one is engaged and installed at mounting slot, a plurality of fastener one for fixing the outer ring of flange one is provided at mounting slot, mounting hole is opened in the middle of the mounting slot, the wheel shaft that drive mechanism includes passes through mounting hole, the bottom end of the wheel shaft is detachably provided with driving sprocket for connecting excavating chain, the bottom surface of the driving sprocket is provided with circular boss, the protective plate below driving sprocket is provided on the crossbeam, the top surface of the protective plate is provided with limiting block for cooperating with the outer ring of circular boss.

2. The positive sprocket structure according to claim 1, characterized in that, The drive mechanism includes a motor, the bottom end of the motor is connected with a sleeve, the output shaft of the motor is connected with a wheel shaft located in the middle of the sleeve, the bottom end of the wheel shaft is connected with the driving sprocket, and the driving sprocket and the wheel shaft are provided with fastener two.

3. The positive sprocket structure according to claim 2, characterized in that, An upper bearing is provided between the top of the sleeve and the wheel shaft, a lower bearing is provided between the bottom end of the sleeve and the wheel shaft, a nut is provided on the wheel shaft for cooperating with the lower bearing, and the bottom end of the sleeve is provided with a bearing end cover.

4. The drive sprocket structure of claim 1 wherein, A limiting groove is opened in the top surface of the crossbeam, the bottom of the stand is engaged and connected in the limiting groove, and the top of the crossbeam is provided with fastener three for fixing the stand.

5. The drive sprocket structure of claim 1 wherein, The limiting block is annular structure or arc block structure, and the arc block structure is located in the front side of the driving sprocket.

6. The drive sprocket structure of claim 5, wherein The bottom of the crossbeam is detachably connected with the protective plate through fastener four, the bottom end of the wheel shaft is connected with a support bearing, and the support bearing is connected in the middle of the annular structure.

7. The drive sprocket structure of claim 1 wherein, The two sides of the stand are provided with connecting plates, and the connecting plates are provided with fastener five for connecting with the drive mechanism.

8. The drive sprocket structure of claim 1 wherein, The top of the stand is provided with a flange plate for connecting a rotary mechanism, and the side surface of the stand is provided with a mounting plate for connecting a material lifting mechanism.

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