CN211102693U - Railway casting cutting and polishing equipment - Google Patents

Abstract

The utility model relates to a railway casting cutting and polishing device, which effectively solves the problems of large labor force, no guarantee of processing precision and low processing efficiency required by manual processing; the technical scheme for solving the problem is that manual treatment is replaced by full-mechanical treatment, so that the required labor force is greatly reduced, the cutting and polishing of the castings are carried out simultaneously, the processing time of the castings is greatly shortened, the efficiency is improved, and the chain plate type conveying platform is adopted, so that the working process is more stable, and the processing effect of the castings is better; the utility model discloses simple structure, the wholeness is strong, has improved the precision and the stability of foundry goods processing, has reduced required labour.

Description

A railway casting cutting and polishing equipment

technical field

The utility model relates to the field of railway casting processing, in particular to a railway casting cutting and polishing equipment.

Background technique

Casting is a metal thermal processing technology that humans have mastered relatively early. So far, it is still a relatively common part processing method. Especially with the continuous development of my country's railway construction, the demand for parts continues to increase, and train parts will also be used. The processing method of casting molding, but many railway castings will add supports during casting to reduce cooling deformation. After casting, the support needs to be cut and the cutting position should be polished. However, there are still some problems with this processing method at present. :

1. The existing cutting and polishing work is all operated manually, because the number of parts is relatively large, and the labor required is large;

2. Manual operation depends entirely on personal experience, and there is no guarantee for the machining accuracy of parts;

3. Manual operation needs to be cut first and then polished, so that the processing time of parts will be prolonged and the efficiency will be low.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a casting cutting and polishing equipment to solve the problems of large labor demand for manual operation, low processing efficiency and low processing accuracy.

To achieve the above object, the utility model makes the following scheme:

A railway casting cutting and polishing equipment includes a device fixing seat, a chain plate type conveying platform is fixedly connected above the equipment fixing seat, and a casting cutting and polishing device is fixedly connected to the upper end surface of the chain plate type conveying platform. The cutting and polishing device includes four vertical slideways that are fixedly connected to the upper end surface of the chain-plate conveying platform and are symmetrical to each other. A cutting and polishing platform is slidably connected in the vertical slideway, and a cutting and polishing platform is fixedly connected to the upper end surface of the cutting and polishing platform. A drive motor, the output end of the drive motor is sequentially connected with a saw blade drive pulley, a polishing roller drive pulley and a top plate drive reducer, a saw blade driven pulley is rotatably connected below the saw blade drive pulley, and the Both ends of the driven pulley of the saw blade are coaxially fixedly connected with a cutting saw blade that is fixedly connected to the lower end surface of the cutting and polishing platform, and a driven pulley of the polishing roller is rotatably connected under the driving pulley of the polishing roller, and the polishing roller is driven Both ends of the pulley are coaxially fixedly connected with a drive helical gear, each of the drive helical gears is vertically meshed with a driven helical gear, and each of the two driven helical gears is fixedly connected with a fixed connection to the lower end face of the cutting and polishing platform The other end of the top plate drive reducer is fixedly connected with a lift drive gear and a top plate drive pulley in turn. The vertical transmission rack between the straight slides, the two ends of the vertical transmission rack are fixedly connected with a transmission rack fixing plate, and the transmission rack fixing plate is simultaneously connected with the two sides on the same side of the chain plate type conveying platform. The vertical slideway is fixedly connected, and a limit sensor is fixedly connected to the fixed plate of the transmission rack at the lower end of the vertical transmission rack;

A splint spring fixing plate and a vertical spring fixing plate are fixedly connected in sequence from top to bottom between the two vertical slides on the same side of the chain plate conveying platform, and the lower end surface of the cutting and polishing platform is close to the chain plate conveying platform. Two vertical compression springs are fixedly connected to each side of the vertical compression spring, the other end of the vertical compression spring is fixedly connected to the vertical spring fixing plate, and the inner side of the vertical compression spring is provided with four fixedly connected to the lower end surface of the cutting and polishing platform And symmetrically distributed fixed connecting rods, the other end of the fixed connecting rod is hinged with a rotating connecting rod, and the other ends of the two rotating connecting rods on the same side of the chain plate type conveying platform are fixedly connected with the casting splint at the same time. A plurality of symmetrically distributed clamping plate compression springs are fixedly connected between the clamping plate and the clamping plate spring fixing plate.

Preferably, the two ends of the chain plate type conveying platform are rotatably connected with two chain plate turntables that are coaxially and fixedly connected, and the four chain plate turntables are connected by a plurality of casting limit chain plates, and each of the casting limit Each chain plate includes a casting support bottom plate, the upper end surface of one side of the casting support bottom plate is fixedly connected with a casting fixed baffle plate, and the upper end surface of the other side of the casting support bottom plate is provided with a number of movable baffle chutes, One end of the movable baffle chute is fixedly connected with a movable baffle compression spring, and a casting movable baffle is jointly slidably connected in the movable baffle chute.

Preferably, a chain plate front top device is fixedly connected to the lower end surface of the chain plate type conveying platform, and the chain plate front top device includes two rack limit frames fixedly connected to the lower end surface of the chain plate type conveying platform. There are two rack limit slots in the middle of the rack limit frame, and a top plate driving rack is slidably connected in the rack limit slots corresponding to each other of the two rack limit frames, and one end of the top plate driving rack is A chain plate top plate is fixedly connected above the head, and a top plate driving gear fixedly connected to the lower end face of the chain plate conveying platform is meshed under the top plate driving rack, and a top plate driven pulley is coaxially fixedly connected to the top plate driving gear , a belt tensioning device fixedly connected to the upper end face of the chain plate type conveying platform is provided between the top driven pulley and the top driving pulley, and a belt is passed between the top driven pulley, the top driving pulley and the belt tensioning device. connect.

Preferably, the chain plate top plate includes a fixed chain plate top plate fixedly connected to the upper end face of one end of the top plate driving rack, the fixed chain plate top plate is hinged with a rotating chain plate top plate, the fixed chain plate top plate and A top plate rebound spring is fixedly connected between the top plates of the rotating chain plates.

Preferably, the belt tensioning device includes a tensioning wheel fixing frame fixedly connected to the upper end face of the chain plate type conveying platform, and a belt tensioning wheel is fixedly connected to each end of the tensioning wheel fixing frame.

The utility model improves the problems of large labor force, low processing efficiency and low processing precision in the existing casting processing;

Compared with the prior art, the utility model has the following advantages:

1. The use of full machinery instead of manual processing greatly reduces the required labor;

2. The casting cutting and polishing device is adopted, so that the cutting and polishing processes can be carried out at the same time, which greatly shortens the casting processing time and improves the efficiency;

3. The front top device of the chain plate and the casting cutting and polishing device use the same driving source, which makes the equipment more integral and more convenient to operate;

4. Because the casting has a certain weight, if the ordinary belt is used for conveying, the belt will be deformed due to its own weight and force during the cutting and polishing process, which will affect the processing effect of the casting. Therefore, the chain plate type conveying platform is used to make the castings. The processing effect is better;

5. Chain plate limit The chain plate adopts the method that one end is movable and one end is fixed, which can handle castings of different sizes and has higher applicability.

Description of drawings

FIG. 1 is a perspective view of the general assembly of the present utility model.

FIG. 2 is a three-dimensional schematic view of the general assembly of the utility model viewed from the bottom.

Fig. 3 is a perspective view of the assembly relationship between the casting cutting and polishing device of the present invention and the front top device of the chain plate.

FIG. 4 is a three-dimensional schematic diagram of the structure of the casting cutting and polishing device of the present invention.

FIG. 5 is a schematic perspective view of the structure of the front top device of the chain plate of the present invention.

FIG. 6 is a three-dimensional schematic diagram of the structure of the top plate of the chain plate of the present invention.

FIG. 7 is a partial perspective view of the chain plate type conveying platform of the present invention.

FIG. 8 is a three-dimensional schematic diagram of the structure of the casting limit chain plate of the present invention.

FIG. 9 is a schematic perspective view of the structure of the belt tensioning device of the present invention.

In the picture: 1 equipment holder, 2 chain plate conveying platform, 3 casting cutting and polishing device, 4 chain plate front top device, 5 belt tensioning device, 6 vertical slideway, 7 cutting and polishing platform, 8 drive motor, 9 saw blade Driving pulley, 10 polishing roller driving pulley, 11 top plate driving reducer, 12 saw blade driven pulley, 13 cutting saw blade, 14 polishing roller driven pulley, 15 driving helical gear, 16 driven helical gear, 17 casting polishing roller, 18 vertical drive rack, 19 lift drive gear, 20 top plate drive pulley, 21 drive rack fixing plate, 22 limit sensor, 23 splint spring fixing plate, 24 vertical spring fixing plate, 25 vertical compression spring, 26 fixed Connecting rod, 27 rotating connecting rod, 28 casting splint, 29 splint compression spring, 30 chain plate turntable, 31 casting limit chain plate, 32 chain plate top plate, 33 rack limit frame, 34 top plate drive rack, 35 top plate drive Gear, 36 top driven pulley, 37 rotating chain top plate, 38 top rebound spring, 39 fixed chain top plate, 40 tensioner fixing frame, 41 belt tensioner, 42 casting support bottom plate, 43 movable baffle compression spring , 44 casting movable baffle, 45 casting fixed baffle.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to FIGS. 1 to 9 . The structural contents mentioned in the following embodiments are all referenced to the accompanying drawings.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

A railway casting cutting and polishing equipment, comprising an equipment fixing base 1, a chain plate type conveying platform 2 is fixedly connected above the equipment fixing base 1, and the chain plate type conveying platform 2 is used for the transmission of castings, the reason why the chain plate type is selected. Conveying platform 2 is because the belt used for ordinary belt conveying is soft material. When the casting is subjected to external force or its own weight, the belt will deform, which will affect the machining accuracy of the casting. The upper end face of the chain plate type conveying platform 2 is fixedly connected There is a casting cutting and polishing device 3. The casting cutting and polishing device 3 includes four vertical slideways 6 that are fixedly connected to the upper end surface of the chain plate conveying platform 2 and are symmetrical to each other. The vertical slideways 6 are slidably connected with each other. A cutting and polishing platform 7, the upper end surface of the cutting and polishing platform 7 is fixedly connected with a drive motor 8, and the output end of the drive motor 8 is fixedly connected with a saw blade drive pulley 9, a polishing roller drive pulley 10 and a top plate drive in turn. Reducer 11, a saw blade driven pulley 12 is rotatably connected below the saw blade drive pulley 9, and two ends of the saw blade driven pulley 12 are coaxially fixedly connected with a piece of fixed connection to the lower end surface of the cutting and polishing platform 7. For cutting the saw blade 13, a polishing roller driven pulley 14 is rotatably connected below the polishing roller driving pulley 10, and a driving helical gear 15 is fixed coaxially at both ends of the polishing roller driven pulley 14. Each of the gears 15 is vertically meshed with a driven helical gear 16, and each of the two driven helical gears 16 is fixedly connected with a casting polishing roller 17 that is fixedly connected to the lower end face of the cutting and polishing platform 7. The top plate drives the reducer 11. One end is fixedly connected with a lift drive gear 19 and a top plate drive pulley 20 in turn. The straight transmission rack 18, the two ends of the vertical transmission rack 18 are fixedly connected with a transmission rack fixing plate 21, and the transmission rack fixing plate 21 is simultaneously connected with the two vertical plates on the same side of the chain plate conveying platform 2. The straight slideway 6 is fixedly connected, and a limit sensor 22 is fixedly connected to the drive rack fixing plate 21 at the lower end of the vertical drive rack 18;

A splint spring fixing plate 23 and a vertical spring fixing plate 24 are fixedly connected in sequence from top to bottom between the two vertical slideways 6 on the same side of the chain plate type conveying platform 2 . The lower end surface of the cutting and polishing platform 7 is Two vertical compression springs 25 are fixedly connected to one side of the chain plate conveying platform 2 , the vertical compression springs 25 are always in a compressed state, and the other end of the vertical compression springs 25 is fixed to the vertical spring fixing plate 24 The inner side of the vertical compression spring 25 is provided with four fixed connecting rods 26 which are fixedly connected to the lower end surface of the cutting and polishing platform 7 and are symmetrically distributed. The other ends of the two rotating connecting rods 27 on the same side of the chain plate type conveying platform 2 are fixedly connected to the casting clamping plate 28 at the same time, and a plurality of symmetrically distributed clamping plate compression springs are fixedly connected between the casting clamping plate 28 and the clamping plate spring fixing plate 23 29. The splint compression spring 29 is in a static state in the initial state, and is in a stretched state in the working state. When the driving motor 8 is turned on, the driving motor 8 is forwarded, and it will drive the saw blade drive pulley 9 and the polishing roller to drive at the same time. The pulley 10, the lift drive gear 19, and the top plate drive pulley 20 rotate, and the rotation of the saw blade drive pulley 9 will drive the saw blade driven pulley 12 to rotate, thereby driving the cutting saw blade 13 to rotate, and the polishing roller drive pulley 10. The driving pulley 14 rotates, and then the polishing roller driven pulley 14 will drive the two drive helical gears 15 that are coaxially and fixedly connected to rotate, and the two drive helical gears 15 drive the meshed driven helical gear 16 to rotate, thereby driving the casting. The polishing roller 17 rotates, because the vertical transmission rack 18 meshing with the lift drive gear 19 is fixed, so when the lift drive gear 19 rotates, it will drive the entire cutting and polishing platform 7 to move downward, thereby cutting and polishing the casting. The two processes of cutting and polishing are carried out simultaneously, and the processing efficiency is improved. At the same time, the downward movement of the cutting and polishing platform 7 will drive the casting clamping plates 28 to approach each other through the transmission of the fixed connecting rod 26 and the rotating connecting rod 27, thereby clamping Tighten the casting to prevent the casting from shifting during the cutting and polishing process. At this time, the compression spring 29 of the splint is in a stretched state. When the top plate driving pulley 20 moves down to the limit sensor 22, the driving motor 8 is turned off, and the cutting and polishing platform 7 will It rises under the elastic force of the clamping plate compression spring 29 and the vertical compression spring 25 .

Embodiment 2, on the basis of Embodiment 1, two chain plate turntables 30 that are coaxially and fixedly connected are rotatably connected at both ends of the chain plate type conveying platform 2, and the four chain plate turntables 30 pass through several castings. The limit chain plates 31 are connected, each of the casting limit chain plates 31 includes a casting support bottom plate 42, and a casting fixing baffle 45 is fixedly connected to the upper end surface of one side of the casting support bottom plate 42. The casting The upper end face of the other side of the support base plate 42 is provided with a number of movable baffle chute, one end of the movable baffle chute is fixedly connected with a movable baffle compression spring 43, and the movable baffle compression spring 43 is in the initial state. It is a static state and is in a compressed state during the working process. A casting movable baffle 44 is jointly slidably connected in the movable baffle chute. During the working process, moving the casting movable baffle 44 will compress the movable baffle compression spring 43 , and then place the casting between the casting movable baffle 44 and the casting fixed baffle 45, and then loosen the casting movable baffle 44 to clamp the casting under the action of the movable baffle compression spring 43, which occurs during the working process The irreversible offset front and rear can also clamp castings of different sizes, with higher adaptability.

Embodiment 3, on the basis of Embodiment 1, a chain plate front top device 4 is fixedly connected to the lower end surface of the chain plate type conveying platform 2, and the chain plate front top device 4 includes two fixedly connected to the chain plate type conveying platform. 2. The rack limit frame 33 on the lower end surface, the rack limit frame 33 includes two rack limit slots in the middle, and the two rack limit frames 33 correspond to each other in the rack limit slots at the same time. A top plate driving rack 34 is slidably connected, a chain plate top plate 32 is fixedly connected above one end of the top plate driving rack 34, and a chain plate top plate 32 is meshed below the top plate driving rack 34 and is fixedly connected to the lower part of the chain plate type conveying platform 2. The top plate driving gear 35 on the end face, the top plate driving gear 35 is coaxially fixedly connected with a top plate driven pulley 36, and a top plate driven pulley 36 and the top plate driving pulley 20 are provided with a fixed connection to the chain plate type conveying platform 2 The belt tensioning device 5 on the upper end face is connected by a belt between the top driven pulley 36, the top driving pulley 20 and the belt tensioning device 5. When the driving motor 8 is turned on, the driving motor 8 is transmitted forward, which will drive the top plate to drive. The belt pulley 20 is forwarded, and then the top plate driven pulley 36 is driven forward through the belt drive, so that the top plate driving rack 34 is moved to the rear of the casting fixing baffle 45. When the driving motor 8 is turned off, the cutting and polishing platform 7 moves up, It will drive the top plate driving pulley 20 to reverse, thereby driving the top plate driving rack 34 to the front, making the casting move one station, which is convenient for the next step.

Embodiment 4, on the basis of Embodiment 3, the chain plate top plate 32 includes a fixed chain plate top plate 39 that is fixedly connected to the upper end face of one end of the top plate driving rack 34, and the fixed chain plate top plate 39 is hinged with a A top plate 37 of a rotating link plate, a top plate rebound spring 38 is fixedly connected between the top plate 39 of the fixed link plate and the top plate of the rotating link plate 37, when the top plate drives the rack 34 to move backward, the top plate 37 of the rotating link plate is subjected to external force. The top plate rebound spring 38 will be compressed and rotated when moving to a specific position, and the top plate 37 of the rotating chain plate will rebound under the action of the top plate rebound spring 38. When the top plate drives the front of the rack 34, the rotating chain plate The top plate 37 is subjected to an opposite force, and at this time, the fixed link plate top plate 39 will limit the rotation of the rotating link plate top plate 37, so as to push the casting to the next station.

Embodiment 5, on the basis of Embodiment 3, the belt tensioning device 5 includes a tensioning wheel fixing frame 40 fixedly connected to the upper end surface of the chain plate conveying platform 2, and the tensioning wheel fixing frame 40 is two Each end is fixedly connected with a belt tensioner 41. During the working process, the top plate driving pulley 20 will move up and down with the cutting and polishing platform 7. At this time, the belt between the top plate driving pulley 20 and the top plate driven pulley 36 will be loose. phenomenon, and the belt tensioning device 5 can prevent the belt from loosening, so that the belt is always in a tensioned state.

When the utility model is used specifically, in the initial state, the cutting and polishing platform 7 will be in a static state under the action of the vertical compression spring 25, and the worker first manually puts the casting on the chain plate type conveying platform 2, until the work under the cutting saw blade is in a static state. Stop and place, then start the driving motor 8, the driving motor 8 rotates in the forward direction, the cutting saw blade 13 is driven to rotate through the saw blade driving pulley 9 and the saw blade driven pulley 12, and the polishing roller driving pulley 10 and the polishing roller driven pulley 14 The casting polishing roller 17 is driven to rotate, and the cutting and polishing platform 7 moves down along the vertical slideway 6 through the cooperation of the elevating driving gear 19 and the vertical transmission rack 18 to cut and polish the casting. Under the action of the rod 26 and the rotating link 27, the casting clamping plate 28 clamps the casting, and the top plate driving rack 34 under the chain plate conveying platform 2 moves backward through the transmission of the top plate driving pulley 20 and the top plate driven pulley 36, thereby Make the chain plate top plate 32 move backward;

When the top plate driving pulley 20 moves down to the limit sensor 22, the driving motor 8 is turned off. At this time, the work of cutting and polishing the casting has been completed. The cutting and polishing platform 7 moves upward under the rebound of the vertical compression spring 25. , the casting clamp plate 28 moves back to loosen the casting, and at the same time, the top plate drives the rack 34 to move forward, thereby driving the front top of the chain plate top plate 32, so that the casting limit chain plate 31 moves forward one station.

There is a station between the cutting saw blade 13 and the casting polishing roller 17, so when the cutting saw blade 13 cuts the casting for the first time, there is no casting in the station below the casting polishing roller 17, when the third casting is cut , the cut casting begins to appear in the station below the casting polishing roller 17 . When the cutting saw blade 13 cuts the third casting, the casting polishing roller 17 begins to polish the first casting cut by the cutting saw blade 13 .

In addition to the above embodiments, the following embodiments can also be provided:

1. An active telescopic rod can be used to replace the vertical compression spring 25. At this time, the top drive reducer 11 can be removed, and the lift drive gear 19 and the top drive pulley 20 can be fixedly connected between the vertical slideway 6, and the vertical drive The rack 18 is fixedly connected to the cutting and polishing platform 7, and the lifting and lowering of the cutting and polishing platform 7 can be directly controlled by controlling the active telescopic rod. The lifting of the cutting and polishing platform 7 will drive the vertical transmission rack 18 to move up and down, and the vertical transmission rack 18 drives the lift drive gear 19 and the top plate drive pulley 20 to rotate, thereby controlling the front top and back of the chain plate front top device 4, the active telescopic rod can be an electric telescopic rod with an external power supply, or a hydraulic telescopic rod with an external air pump;

2. Remove the top drive reducer 11, fix the lift drive gear 19 and the top drive pulley 20 between the vertical slideways 6, fix the vertical drive rack 18 on the cutting and polishing platform 7, lift the drive gear 19 A self-locking motor is directly connected to the top plate driving pulley 20, and the self-locking motor controls the lifting and lowering of the cutting and polishing platform 7 and the reciprocating motion of the chain plate front top device 4.

The utility model improves the existing railway casting processing technology, adopts machinery instead of manual labor, reduces the required labor force, improves the processing efficiency and processing accuracy, the cutting and polishing processes are performed synchronously, and the processing time is shortened, and the same drive is used for all processes. Originally, the integrity of the equipment is better, and the chain plate type conveying platform is adopted to improve the machining accuracy of the workpiece. One end of the chain plate is fixed at one end, and the other end is fixed, which can adapt to castings of different sizes, and the equipment adaptability is stronger; the utility model has simple structure, remarkable effect and practicality. Strong sex.

Claims (5)

1. A railway casting cutting and polishing equipment, comprising an equipment fixing seat (1), characterized in that a chain plate type conveying platform (2) is fixedly connected above the equipment fixing seat (1), and the chain plate type conveying platform (2) is A casting cutting and polishing device (3) is fixedly connected to the upper end surface of the platform (2), and the casting cutting and polishing device (3) includes four vertical sliding plates that are fixedly connected to the upper end surface of the chain plate type conveying platform (2) and are symmetrical to each other. A cutting and polishing platform (7) is slidably connected to the vertical slideway (6), and a driving motor (8) is fixedly connected to the upper end surface of the cutting and polishing platform (7). The driving motor (8) A saw blade drive pulley (9), a polishing roller drive pulley (10) and a top plate drive reducer (11) are fixedly connected to the output end in sequence, and a saw blade drive pulley (9) is rotatably connected below the drive pulley (9). A saw blade driven pulley (12), two ends of the saw blade driven pulley (12) are coaxially fixedly connected with a cutting saw blade (13) fixedly connected to the lower end surface of the cutting and polishing platform (7), the polishing A polishing roller driven pulley (14) is rotatably connected under the roller driving pulley (10), and a driving helical gear (15) is fixed coaxially at both ends of the polishing roller driven pulley (14). Each of the gears (15) is vertically meshed with a driven helical gear (16), and each of the two driven helical gears (16) is fixedly connected with a casting polishing roller (17) which is fixedly connected to the lower end face of the cutting and polishing platform (7). ), the other end of the top drive reducer (11) is sequentially fixedly connected with a lift drive gear (19) and a top drive pulley (20), the lift drive gear (19) is engaged with a vertical fixed connection to the chain The vertical transmission rack (18) between the two vertical slideways (6) on the same side of the plate conveying platform (2), the two ends of the vertical transmission rack (18) are fixedly connected with a transmission tooth A strip fixing plate (21), the transmission rack fixing plate (21) is fixedly connected with the two vertical slideways (6) on the same side of the chain plate type conveying platform (2) at the same time, and the vertical transmission rack (18) ) a limit sensor (22) is fixedly connected to the drive rack fixing plate (21) at the lower end; A splint spring fixing plate (23) and a vertical spring fixing plate (24) are fixedly connected in sequence from top to bottom between the two vertical slideways (6) on the same side of the chain plate type conveying platform (2). Two vertical compression springs (25) are fixedly connected to one side of the lower end surface of the cutting and polishing platform (7) close to the chain plate conveying platform (2), and the other end of the vertical compression spring (25) is connected to the vertical spring The fixing plate (24) is fixedly connected, and the inner side of the vertical compression spring (25) is provided with four fixed connecting rods (26) that are fixedly connected to the lower end surface of the cutting and polishing platform (7) and are symmetrically distributed. 26) A rotating connecting rod (27) is hinged at the other end, and the other ends of the two rotating connecting rods (27) on the same side of the chain plate conveying platform (2) are fixedly connected to the casting splint (28) at the same time. A plurality of symmetrically distributed clamping plate compression springs (29) are fixedly connected between the casting clamping plate (28) and the clamping plate spring fixing plate (23). 2. The equipment for cutting and polishing railway castings according to claim 1, characterized in that, two chain plate turntables (30 , which are coaxially and fixedly connected) are rotatably connected at both ends of the chain plate type conveying platform (2). ), the four chain plate turntables (30) are connected by a plurality of casting limit chain plates (31), each of the casting limit chain plates (31) includes a casting support bottom plate (42), the casting limit chain plate (31) A casting fixing baffle plate (45) is fixedly connected to the upper end surface of one side of the supporting base plate (42), and a plurality of movable baffle chutes are opened on the upper end surface of the other side of the casting supporting base plate (42). One end of the chute is fixedly connected with a movable baffle compression spring (43), and a casting movable baffle (44) is jointly slidably connected in the movable baffle chute. 3. A railway casting cutting and polishing equipment according to claim 1, characterized in that a chain plate front top device (4) is fixedly connected to the lower end surface of the chain plate type conveying platform (2), and the chain plate front top The device (4) includes two rack limit frames (33) fixedly connected to the lower end surface of the chain plate type conveying platform (2), the rack limit frames (33) include two rack limit slots in the middle , a top plate driving rack (34) is slidably connected in the corresponding rack limit slots of the two rack limit frames (33), and a top plate driving rack (34) is fixedly connected above one end. A chain plate top plate (32), a top plate driving gear (35) fixedly connected to the lower end face of the chain plate type conveying platform (2) is meshed under the top plate driving rack (34), and the top plate driving gear (35) A top driven pulley (36) is fixedly connected coaxially, and a belt tensioning device ( 5), the top plate driven pulley (36), the top plate driving pulley (20) and the belt tensioning device (5) are connected by a belt. 4 . The railway casting cutting and polishing equipment according to claim 3 , wherein the chain plate top plate ( 32 ) includes a fixed chain fixedly connected to the upper end face of one end of the top plate driving rack ( 34 ). 5 . A plate top plate (39), the fixed chain plate top plate (39) is hinged with a rotating chain plate top plate (37), and a top plate is fixedly connected between the fixed chain plate top plate (39) and the rotating chain plate top plate (37) Rebound spring (38). 5. A railway casting cutting and polishing equipment according to claim 3, characterized in that the belt tensioning device (5) comprises a tensioning pulley that is fixedly connected to the upper end face of the chain plate type conveying platform (2). The fixing frame (40) is fixedly connected with a belt tensioning pulley (41) at both ends of the tensioning wheel fixing frame (40).

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