CN210081466U

CN210081466U - Sprocket grinding support

Info

Publication number: CN210081466U
Application number: CN201920344032.1U
Authority: CN
Inventors: 童岳平
Original assignee: Lanxi Keyuan Conveying Machinery Co Ltd
Current assignee: Lanxi Keyuan Conveying Machinery Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-02-18
Anticipated expiration: 2029-03-19

Abstract

The utility model provides a sprocket grinding support, includes base and carousel, and the base passes through the bearing with the carousel and is connected, and the upper end of carousel is provided with the boss that is used for radial spacing sprocket and can cup joint with the centre bore of sprocket, and the boss includes center post and annular card platform, and the bottom and the carousel fixed connection of center post are provided with a plurality of electric liquid push rods on the center post, and annular card platform is formed by the concatenation of a plurality of connecting blocks, and a plurality of connecting blocks are connected with the piston rod of a plurality of electric liquid push rods. Under the rotation drive of the grinding wheel, the chain wheel and the turntable rotate simultaneously, and the grinding wheel rotates at a constant speed, so that the chain wheel also rotates at a constant speed, the grinding uniformity and the quality of the chain wheel are improved, meanwhile, the labor intensity of manually rotating the chain wheel can be reduced, and the grinding time of the chain wheel is saved. The utility model discloses an outer diameter less than or equal to of annular ka tai the diameter of the centre bore of the sprocket of minimum specification, the sprocket homoenergetic of various specifications overlaps in the outside of boss, and the firm in connection of sprocket is difficult for droing moreover.

Description

Sprocket grinding support

Technical Field

The utility model relates to a sprocket technical field specifically is a sprocket grinding support.

Background

A sprocket, i.e. a wheel with cogged or buckled teeth, is used to engage with a pitch link, is a solid or spoked gear, engages with a (roller) chain to transmit motion, and is widely used in mechanical transmission in the industries of chemical engineering, textile machinery, food processing, instruments, petroleum, etc.

After the gear hobbing of sprocket is accomplished, need get rid of the processing through the mode of polishing to the outward appearance burr of sprocket, at present, at the in-process of polishing the sprocket, the workman generally adopts manual rotation sprocket, then polishes the sprocket through the emery wheel, because the in-process of manual rotation emery wheel, slew velocity can't guarantee at the uniform velocity, consequently, the homogeneity of polishing of sprocket is poor, and the fine-processing quality of sprocket is poor.

Chinese patent CN206029594U discloses a sprocket grinding support, including the chassis that plays the fixed action with be used for supporting the sprocket and follow sprocket pivoted supporting disk, fixed mounting has the pillar on the chassis, the supporting disk with the pillar rotates and cup joints, the top extension of pillar is provided with and is used for radially spacing the sprocket and can with the boss that the centre bore of sprocket cup jointed drives the sprocket through the supporting disk, realizes being connected with the rotation between pillar and the boss, can be at the in-process of emery wheel grinding sprocket, under the impact force of emery wheel, the sprocket rotates around the boss, because the emery wheel uniform velocity rotates, the rotation of consequently sprocket is the uniform velocity rotation equally, and the grinding degree of uniformity and the quality of sprocket obtain improving, simultaneously, can reduce the artificial intensity of labour who rotates the sprocket, saves sprocket grinding time.

However, the utility model discloses a big or small size of boss is fixed, can only be applicable to the sprocket of a specification, and often need produce the sprocket of multiple specification in actual production, just can't use this utility model to carry out the grinding with the unmatched sprocket of size of boss.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the problem that can only be suitable for the sprocket of a specification in order to solve sprocket grinding support, the utility model provides a sprocket grinding support.

The utility model provides a sprocket grinding support, includes base and carousel, the base with the carousel passes through the bearing and connects, the upper end of carousel is provided with the boss that is used for radial spacing sprocket and can cup joint with the centre bore of sprocket, the boss includes center post and annular card platform, the bottom of center post with carousel fixed connection, be provided with a plurality of electric liquid push rods on the center post, annular card platform is formed by the concatenation of a plurality of connecting blocks, and is a plurality of the connecting block respectively with a plurality of the piston rod of electric liquid push rod is connected.

Through adopting above-mentioned technical scheme, the base is used for fixing and supporting the carousel, and the carousel is used for supporting the sprocket and follows the sprocket and rotate. When using, overlap the outside at the annular card platform of boss with the centre bore of sprocket earlier, the diameter of the centre bore of the sprocket of the external diameter less than or equal to minimum specification of annular card platform, at this moment, there is the gap between the centre bore of sprocket and the annular card platform, also not firmly be connected between sprocket and the annular card platform, the electric liquid push rod on the center post of restart boss after that, the piston rod of electric liquid push rod removes, the connecting block removal of being connected with it that drives is removed in the removal of piston rod, along with the continuous removal of connecting block, the connecting block can contact with the pore wall of the centre bore of sprocket, the connecting block pushes up on the pore wall of the centre bore of sprocket, thereby, fix the sprocket well. The handheld emery wheel of workman begins to grind the sprocket, because the sprocket is pushed up tightly by the connecting block of annular card platform, the connecting block passes through the electricity liquid push rod and is connected with the center post, center post and carousel fixed connection, and the carousel supports the sprocket and live, the sprocket can not reciprocate, when the emery wheel was used on the sprocket, produce the effort to the sprocket, the effort that the sprocket was last passes through the connecting block, electricity liquid push rod, the center post transmits the carousel on, the carousel passes through the bearing with the base and is connected, the carousel is under the effect of effort, take place the rotation. Under the rotation drive of the grinding wheel, the chain wheel and the turntable rotate simultaneously, and the grinding wheel rotates at a constant speed, so that the chain wheel also rotates at a constant speed, the grinding uniformity and the quality of the chain wheel are improved, meanwhile, the labor intensity of manually rotating the chain wheel can be reduced, and the grinding time of the chain wheel is saved. The utility model discloses an outer diameter less than or equal to of annular ka tai the diameter of the centre bore of the sprocket of minimum specification, the sprocket homoenergetic of various specifications overlaps in the outside of boss, and the firm in connection of sprocket is difficult for droing moreover.

As a further setting of the utility model, it is a plurality of the lower extreme of connecting block all is provided with the slider, the up end of carousel be provided with a plurality of with the spout that the position of slider corresponds, the slider is located in the spout.

Through adopting above-mentioned technical scheme, when the in-process that starts the electric liquid push rod and drive the connecting block and remove, the slider of connecting block lower extreme removes in the spout of the up end of carousel, has promoted the stability between connecting block and the carousel.

As the utility model discloses a further setting, the base includes chassis and two spinal branch daggers, two the support column all includes elevating platform and lead screw, the inside of elevating platform is provided with and is used for penetrating the jack of lead screw, the drill way position of jack is provided with and is used for the cover to establish nut seat on the lead screw, the inside on chassis is provided with and is used for rotating the drive arrangement of lead screw.

Through adopting above-mentioned technical scheme, because everyone's health height and operation habit etc. have difference, so individual is in the operation the utility model discloses the time, required best comfortable height also is different. When the height of the turntable needs to be adjusted, the driving device in the chassis is started, the driving device drives the screw rod connected with the driving device to rotate, one end of the screw rod penetrates into the jack of the lifting table, the nut seat on the orifice of the jack is sleeved on the screw rod, the screw rod rotates to drive the nut seat to move up and down along the screw rod, the nut seat moves up and down to drive the lifting table to move up and down, the lifting table moves up and down to drive the turntable connected with the lifting table to move up and down, and therefore the height of the turntable is adjusted. The design is more humanized, and the utility model discloses can both use more comfortably by everyone.

As a further setting of the utility model, drive arrangement includes motor, dwang, two bevel gears and two crown gears, the dwang with the output shaft fixed connection of motor, two bevel gear all overlaps to be established on the dwang, two crown gear respectively with two the bevel gear meshing is connected, crown gear's lower extreme is provided with the bracing piece, the bracing piece with crown gear swivelling joint, the bracing piece with chassis fixed connection, the lower extreme of lead screw is provided with the connecting rod, the connecting rod penetrates the inside on chassis and with crown gear fixed connection, the connecting rod with connect through the bearing between the chassis.

By adopting the technical scheme, the crown gear is fixed in the chassis through the supporting rod, the crown gear is rotatably connected with the supporting rod, the crown gear can smoothly rotate on the supporting rod, when the height of the turntable is required to be adjusted, the motor is started, the output shaft of the motor rotates, the rotation of the output shaft of the motor drives the rotating rod connected with the motor to rotate, the rotating rod rotates to drive the bevel gear to rotate, the rotation of the bevel gear drives the crown gear connected with the bevel gear to rotate, the rotation of the crown gear drives the connecting rod connected with the crown gear to rotate, the connecting rod rotates to drive the lead screw connected with the connecting rod to rotate, and therefore the nut seat on the lead screw is driven to move up.

As a further setting of the utility model, the height more than or equal to of boss is the thickness of the most big specification's sprocket.

Through adopting above-mentioned technical scheme, when any sprocket cup joints on the boss, the boss all exceeds the sprocket, can make the sprocket be connected more stably with being connected between the boss, prevents that the sprocket from droing.

As a further arrangement of the utility model, the chassis is in a shape of a circular plate or a square plate, and the area and the thickness of the chassis are respectively 2-3 times of the area and the thickness of the rotary table.

Through adopting above-mentioned technical scheme, the weight of chassis is big, can realize the stable supporting effect to the sprocket, and the chassis also can be fixed subaerial through self weight.

As a further setting of the utility model, the outside cover of lead screw is equipped with rubber bellows, rubber bellows's one end with chassis fixed connection, rubber bellows's the other end with elevating platform fixed connection.

Through adopting above-mentioned technical scheme, the outside at the lead screw is established to the rubber ripple hose cover, can protect the lead screw well, prevents that dust impurity adhesion from producing the influence to reciprocating of nut seat on the lead screw, and the rubber ripple hose has fine compliance and elasticity in addition, and the rubber ripple hose can be elongated or the pressure weak point along with reciprocating of elevating platform, can not produce the resistance that is big enough to prevent the elevating platform to reciprocate to the elevating platform.

As a further setting of the utility model, keep away from on the connecting block the one end of electricity liquid push rod is provided with the rubber pad.

Through adopting above-mentioned technical scheme, when the connecting block top was on the centre bore pore wall of sprocket, the rubber pad can avoid connecting block and sprocket impaired, also can promote the frictional force between connecting block and the sprocket simultaneously.

As the utility model discloses a further setting, the inside of center post is provided with PLC controller one, and is a plurality of the electricity liquid push rod all with PLC controller one is connected, be provided with PLC controller two in the chassis, the motor with PLC controller two is connected, PLC controller one with all be provided with wireless signal receiver on the PLC controller two, wireless signal receiver is supporting to have the wireless signal remote controller.

Through adopting above-mentioned technical scheme, the controller can long-rangely use the wireless signal remote controller to the wireless signal receiver signals, and the wireless signal receiver sends the instruction to the input of PLC controller one and PLC controller two after receiving the signal to control opening and closing of motor and electric liquid push rod.

As a further arrangement of the utility model, the upper end face of the turntable is provided with a plastic wear pad.

Through adopting above-mentioned technical scheme, the connecting block can produce the friction with the up end of carousel at the in-process that removes, and the plastics abrasion pad can protect connecting block and carousel well, prevents that connecting block and carousel from because of the friction is impaired.

Compared with the prior art, the beneficial effects of the utility model are that:

Drawings

FIG. 1 is a schematic structural view of a sprocket grinding support according to the present invention;

FIG. 2 is a first top view of a sprocket grinding support according to the present invention;

FIG. 3 is a second top view of the sprocket grinding support of the present invention;

FIG. 4 is a front view of a sprocket grinding support according to the present invention;

fig. 5 is a bottom view of the annular chuck table of fig. 1.

Reference numerals: 1. a base; 2. a turntable; 3. a boss; 4. a central column; 5. an annular clamping table; 6. an electro-hydraulic push rod; 7. connecting blocks; 8. a slider; 9. a chute; 10. a chassis; 11. a support pillar; 12. a lifting platform; 13. a screw rod; 14. a jack; 15. a nut seat; 16. a drive device; 17. a motor; 18. rotating the rod; 19. a bevel gear; 20. a crown gear; 21. a support bar; 22. a connecting rod; 23. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a chain wheel grinding support comprises a base 1 and a rotary table 2, wherein the base 1 is connected with the rotary table 2 through a bearing, a boss 3 used for radially limiting a chain wheel and capable of being sleeved with a center hole of the chain wheel is arranged at the upper end of the rotary table 2, the boss 3 comprises a center column 4 and an annular clamping table 5, the bottom end of the center column 4 is fixedly connected with the rotary table 2, a plurality of electro-hydraulic push rods 6 are arranged on the center column 4, the annular clamping table 5 is formed by splicing a plurality of connecting blocks 7, and the connecting blocks 7 are respectively connected with piston rods of the electro-hydraulic push rods.

The base 1 is used for fixing and supporting the rotary table 2, and the rotary table 2 is used for supporting the chain wheel and rotates along with the chain wheel. When using, earlier overlap the centre bore of sprocket in the outside of the annular card platform 5 of boss 3, the external diameter of annular card platform 5 is less than or equal to the diameter of the centre bore of the sprocket of minimum specification, at this moment, there is the gap between the centre bore of sprocket and the annular card platform 5, also not firmly be connected between sprocket and the annular card platform 5, after that, the electro-hydraulic push rod 6 on the center post 4 of boss 3 starts again, the piston rod of electro-hydraulic push rod 6 removes, the removal of piston rod drives the connecting block 7 removal of being connected with it, along with the continuous removal of connecting block 7, connecting block 7 can contact with the pore wall of the centre bore of sprocket, connecting block 7 pushes up on the pore wall of the centre bore of sprocket, thereby, fix the sprocket well. The handheld emery wheel of workman begins to grind the sprocket, because the sprocket is tightly pushed up by connecting block 7 of annular card platform 5, connecting block 7 is connected with center post 4 through electric liquid push rod 6,

center post

4 and 2 fixed connection of carousel, and carousel 2 holds the sprocket support, the sprocket can not reciprocate, when the emery wheel is used on the sprocket, produce the effort to the sprocket, the effort on the sprocket passes through connecting block 7, electric liquid push rod 6, center post 4 transmits on carousel 2, carousel 2 passes through the bearing with base 1 and is connected, carousel 2 is under the effect of effort, take place the rotation. Under the rotation drive of emery wheel, sprocket and carousel 2 rotate simultaneously, because the emery wheel rotates at the uniform velocity, therefore the rotation of sprocket is the uniform velocity rotation equally, and the grinding degree of consistency and the quality of sprocket obtain improving, simultaneously, can reduce the intensity of labour who artificially rotates the sprocket, save sprocket grinding time. The utility model discloses an annular ka tai 5's external diameter is less than or equal to the diameter of the centre bore of the sprocket of minimum specification, and the sprocket homoenergetic of various specifications overlaps in the outside of boss 3, and the firm in connection of sprocket is difficult for droing moreover.

As a modified specific implementation mode, the lower ends of the connecting blocks 7 are respectively provided with a sliding block 8, the upper end face of the rotary table 2 is provided with a plurality of sliding grooves 9 corresponding to the sliding blocks 8, and the sliding blocks 8 are located in the sliding grooves 9.

When the electrohydraulic push rod 6 is started to drive the connecting block 7 to move, the sliding block 8 at the lower end of the connecting block 7 moves in the sliding groove 9 on the upper end face of the turntable 2, so that the stability between the connecting block 7 and the turntable 2 is improved.

As a modified specific embodiment, the base 1 includes a chassis 10 and two support columns 11, each of the two support columns 11 includes a lifting platform 12 and a screw rod 13, a jack 14 for penetrating the screw rod 13 is provided inside the lifting platform 12, a nut seat 15 for being sleeved on the screw rod 13 is provided at an aperture position of the jack 14, and a driving device 16 for rotating the screw rod 13 is provided inside the chassis 10.

Because of the difference in the height of each person's body and the operation habits, the optimum comfortable height required by the person when operating the present invention is also different. When the height of the turntable 2 needs to be adjusted, the driving device 16 inside the chassis 10 is started, the driving device 16 drives the screw rod 13 connected with the driving device to rotate, one end of the screw rod 13 penetrates into the jack 14 of the lifting platform 12, the nut seat 15 on the hole opening of the jack 14 is sleeved on the screw rod 13, the screw rod 13 rotates to drive the nut seat 15 to move up and down along the screw rod 13, the nut seat 15 moves up and down to drive the lifting platform 12 to move up and down, and the lifting platform 12 moves up and down to drive the turntable 2 connected with the lifting platform to move up and down, so that the height of the turntable 2 is adjusted. The design is more humanized, and the utility model discloses can both use more comfortably by everyone.

As an improved specific embodiment, the driving device 16 includes a motor 17, a rotating rod 18, two bevel gears 19 and two crown gears 20, the rotating rod 18 is fixedly connected to an output shaft of the motor 17, the two bevel gears 19 are both sleeved on the rotating rod 18, the two crown gears 20 are respectively engaged with the two bevel gears 19, a support rod 21 is disposed at a lower end of the crown gear 20, the support rod 21 is rotatably connected to the crown gear 20, the support rod 21 is fixedly connected to the chassis 10, a connecting rod 22 is disposed at a lower end of the screw rod 13, the connecting rod 22 penetrates into the chassis 10 and is fixedly connected to the crown gear 20, and the connecting rod 22 is connected to the chassis 10 through a bearing.

The crown gear 20 is fixed inside the chassis 10 through a support rod 21, the crown gear 20 is rotationally connected with the support rod 21, the crown gear 20 can smoothly rotate on the support rod 21, when the height of the rotary table 2 needs to be adjusted, the motor 17 is started, the output shaft of the motor 17 rotates, the rotation of the output shaft of the motor 17 drives the rotating rod 18 connected with the motor to rotate, the rotating rod 18 rotates to drive the bevel gear 19 to rotate, the rotation of the bevel gear 19 drives the crown gear 20 meshed with the bevel gear to rotate, the rotation of the crown gear 20 drives the connecting rod 22 connected with the crown gear to rotate, and the connecting rod 22 rotates to drive the screw rod 13 connected with the connecting rod to rotate, so that the nut seat 15 on the screw rod 13 is driven to move.

As a modified specific embodiment, the height of the boss 3 is equal to or greater than the thickness of the largest-sized sprocket.

When any chain wheel cup joints on boss 3, boss 3 all exceeds the chain wheel, can make the chain wheel more stable with being connected between the boss 3, prevents that the chain wheel from droing.

As a modified specific embodiment, the chassis 10 has a circular plate shape or a square plate shape, and the area and the thickness of the chassis 10 are 2 to 3 times of the area and the thickness of the turntable 2, respectively.

The chassis 10 has a heavy weight, so that a stable supporting effect on the chain wheel can be realized, and the chassis 10 can be fixed on the ground through the self weight.

As a modified specific embodiment, a rubber corrugated hose is sleeved outside the screw rod 13, one end of the rubber corrugated hose is fixedly connected with the chassis 10, and the other end of the rubber corrugated hose is fixedly connected with the lifting platform 12.

The rubber corrugated hose is sleeved outside the screw rod 13, the screw rod 13 can be well protected, dust and impurities are prevented from being adhered to the screw rod 13 to influence the up-and-down movement of the nut seat 15, the rubber corrugated hose has good flexibility and elasticity, the rubber corrugated hose can be stretched or shortened along with the up-and-down movement of the lifting platform 12, and the resistance which is large enough to prevent the lifting platform 12 from moving up and down cannot be generated on the lifting platform 12.

As a modified specific embodiment, a rubber pad 23 is arranged at one end of the connecting block 7 far away from the electro-hydraulic push rod 6.

When connecting block 7 pushes up on the centre bore pore wall of sprocket, rubber pad 23 can avoid connecting block 7 and sprocket impaired, also can promote the frictional force between connecting block 7 and the sprocket simultaneously.

As a modified embodiment, the inside of center post 4 is provided with PLC controller one, and a plurality of electric liquid push rods 6 all are connected with PLC controller one, are provided with PLC controller two in the chassis 10, and motor 17 is connected with PLC controller two, all is provided with wireless signal receiver on PLC controller one and the PLC controller two, and wireless signal receiver is supporting to have the wireless signal remote controller.

The controller can remotely use the wireless signal remote controller to send out signals to the wireless signal receiver, and the wireless signal receiver sends out instructions to the input ends of the first PLC controller and the second PLC controller after receiving the signals, so that the opening and closing of the motor 17 and the electro-hydraulic push rod 6 are controlled.

As a modified specific embodiment, the upper end surface of the rotating disc 2 is provided with a plastic wear pad.

Connecting block 7 can produce the friction with the up end of carousel 2 at the in-process that removes, and the plastics abrasion pad can protect connecting block 7 and carousel 2 well, prevents that connecting block 7 and carousel 2 from because of the friction is impaired.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sprocket grinding support, includes base (1) and carousel (2), base (1) with carousel (2) pass through the bearing and connect, the upper end of carousel (2) is provided with boss (3) that are used for radial spacing sprocket and can cup joint with the centre bore of sprocket, its characterized in that: boss (3) include center post (4) and annular card platform (5), the bottom of center post (4) with carousel (2) fixed connection, be provided with a plurality of electric liquid push rods (6) on center post (4), annular card platform (5) are formed by a plurality of connecting blocks (7) concatenation, and are a plurality of connecting block (7) are respectively with a plurality of the piston rod of electric liquid push rod (6) is connected.

2. A sprocket grinding carriage as set forth in claim 1 wherein: a plurality of the lower end of the connecting block (7) is provided with a sliding block (8), the upper end face of the rotary table (2) is provided with a plurality of sliding grooves (9) corresponding to the sliding block (8), and the sliding block (8) is located in the sliding grooves (9).

3. A sprocket grinding carriage as set forth in claim 1 wherein: base (1) includes chassis (10) and two support columns (11), two support columns (11) all include elevating platform (12) and lead screw (13), the inside of elevating platform (12) is provided with and is used for penetrating jack (14) of lead screw (13), the drill way position of jack (14) is provided with and is used for the cover to establish nut seat (15) on lead screw (13), the inside on chassis (10) is provided with and is used for rotating drive arrangement (16) of lead screw (13).

4. A sprocket grinding carriage as set forth in claim 3 wherein: the driving device (16) comprises a motor (17), a rotating rod (18), two bevel gears (19) and two crown gears (20), the rotating rod (18) is fixedly connected with an output shaft of the motor (17), the two bevel gears (19) are sleeved on the rotating rod (18), the two crown gears (20) are respectively connected with the two bevel gears (19) in a meshing way, a support rod (21) is arranged at the lower end of the crown gear (20), the support rod (21) is rotationally connected with the crown gear (20), the support rod (21) is fixedly connected with the chassis (10), the lower end of the screw rod (13) is provided with a connecting rod (22), the connecting rod (22) penetrates into the chassis (10) and is fixedly connected with the crown wheel (20), the connecting rod (22) is connected with the chassis (10) through a bearing.

5. A sprocket grinding carriage as set forth in claim 1 wherein: the height of the boss (3) is larger than or equal to the thickness of the largest-size chain wheel.

6. A sprocket grinding carriage as set forth in claim 3 wherein: the chassis (10) is in a shape of a circular plate or a square plate, and the area and the thickness of the chassis (10) are respectively 2-3 times of those of the turntable (2).

7. A sprocket grinding carriage as set forth in claim 3 wherein: the outer sleeve of the screw rod (13) is provided with a rubber corrugated hose, one end of the rubber corrugated hose is fixedly connected with the chassis (10), and the other end of the rubber corrugated hose is fixedly connected with the lifting platform (12).

8. A sprocket grinding carriage as set forth in claim 1 wherein: and a rubber pad (23) is arranged at one end of the connecting block (7) far away from the electro-hydraulic push rod (6).

9. The sprocket grinding carriage as set forth in claim 4, wherein: the novel electric hydraulic control device is characterized in that a first PLC is arranged inside the center column (4), the electro-hydraulic push rods (6) are connected with the first PLC, a second PLC is arranged in the chassis (10), the motor (17) is connected with the second PLC, a first PLC and a second PLC are provided with wireless signal receivers, and the wireless signal receivers are matched with wireless signal remote controllers.

10. A sprocket grinding carriage as set forth in claim 1 wherein: the upper end surface of the turntable (2) is provided with a plastic wear-resistant pad.