CN210999479U

CN210999479U - Concrete block dovetail groove processing equipment

Info

Publication number: CN210999479U
Application number: CN201921484181.4U
Authority: CN
Inventors: 刘传伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-07-14
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses a concrete block dovetail groove processing device, which comprises a working bed 1, a gantry frame 2, a guide post 3, a synchronous lifter 4, a driving device 5, a milling shaft box 6, a cooling device 7 and a walking driving device 9; the working bed 1 consists of a bed body 101, bed legs 102, guide rails 103, a slide block 104, a guide wire groove 105, a clean water groove 106, a turbid water groove 107, a bearing workbench 108, a transverse baffle plate 109, a longitudinal baffle plate 110, a clamping cylinder 111, a movable transverse baffle plate 112, a side movable longitudinal baffle plate 113, a side small cylinder 114 and a rack 115; the gantry frame 2 is composed of a transverse beam 201, a longitudinal beam 202, an upright 203, a reinforcing plate 204, an upright connecting plate 205, a walking motor upright connecting plate 206, a guide post flange 213 and a screw rod flange 214; the synchronous lifter 4 consists of a lifting slide block 401, a lifting adjusting handle 402, a synchronous lifting connecting shaft 403 and a lead screw 404; the drive 5 is located above the mill housing 6 and the cooling device 7 is located below it.

Description

Concrete block dovetail groove processing equipment

Technical Field

The utility model relates to a concrete block dovetail processing equipment belongs to concrete product processing equipment and technical field.

Background

Although the single aerated concrete block has the functions of heat preservation, heat insulation and fire prevention, the heat conductivity coefficient of the aerated concrete block is larger, in order to reach the heat preservation standard of the external wall body required by the state, the thickness of the aerated concrete block needs to be increased, so that the use area is reduced, the building area is enlarged, and the building cost is increased; in order to overcome the defect, the inventor develops a sandwich type aerated concrete polyphenyl sandwich thermal insulation block (an aerated concrete thermal insulation block 201820856268.9), on the premise of meeting the heat transfer coefficient and the fireproof performance of an outer wall body, the thickness of a thermal insulation block wall body is greatly reduced, the use area is increased, the building cost is reduced, and the sandwich type aerated concrete polyphenyl sandwich thermal insulation block has a wide market prospect; the heat-insulation building block is characterized in that a plurality of dovetail grooves are processed on one large surface of a rectangular hexahedral aerated concrete building block, and then the sandwich type aerated concrete polyphenyl sandwich heat-insulation building block is formed by injection molding equipment, namely, the aerated concrete building block with the dovetail grooves on one side is arranged on two sides, and the polyphenyl sandwich heat-insulation board with the dovetail grooves on two sides is arranged in the middle; the cuboid aerated concrete block needs to be processed to form a dovetail groove, the manual processing efficiency is low, the quality cannot be guaranteed, and the rejection rate is high; considering that mechanical equipment is adopted to process the concrete dovetail groove, but the existing concrete processing equipment does not have the equipment, and the inventor tries to develop the concrete block dovetail groove processing equipment unyingly, so that the qualified product can be processed, the processing efficiency can be improved, the environment can be prevented from being polluted, and the concrete block dovetail groove processing equipment is reasonable in structure, safe, reliable and simple to operate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to meet the production requirements of sandwich type aerated concrete polyphenyl sandwich heat-insulation building blocks, the development of concrete block dovetail groove processing equipment is attempted, qualified concrete blocks with dovetail grooves are produced, not only can qualified products be processed, but also the processing efficiency can be improved, the environment can be guaranteed not to be polluted, the structure is reasonable, the safety and the reliability are high, the operation is simple, and the blank of the concrete block dovetail groove processing equipment is filled.

The technical scheme of the utility model is realized like this: a concrete block dovetail groove processing device is composed of a working bed 1, a gantry frame 2, a guide post 3, a synchronous lifter 4, a driving device 5, a milling shaft box 6, a cooling device 7, a dovetail milling cutter 8 and a walking driving device 9;

the working bed 1 consists of a bed body 101, bed legs 102, guide rails 103, a slide block 104, a wire guide groove 105, a clean water groove 106, a turbid water groove 107, a bearing working table 108, transverse baffles 109, a longitudinal baffle 110, two clamping cylinders 111, two movable transverse baffles 112, a plurality of side movable longitudinal baffles 113, a plurality of side small cylinders 114 and a rack 115; the bed legs 102 are positioned below the bed body 101, distributed on two sides of the bed body 101 in two rows and connected with the bed body 101 in a welding manner; the wire guide groove 105 is positioned below one side of the machine body 101 and is welded with the machine body 101; a clear water tank 106 and a turbid water tank 107 are respectively arranged at the two longitudinal ends of the bed body 101; the bearing workbench 108 is arranged in the middle of the bed 101, is connected with the clean water tank 106 and the turbid water tank 107 at two ends, and is higher than the clean water tank 106 and the turbid water tank 107; the guide rails 103 are arranged on two longitudinal sides of the bed body 101, the lengths of the guide rails 103 are equal to that of the bed body 101, the guide rails 103 on the two sides of the bed body 101 are parallel to each other, the upper surfaces of the two guide rails 103 are in the same plane, and the guide rails 103 are connected with the bed body 101 through bolts; two sliding blocks 104 are arranged on each guide rail 103, and the distance between the two sliding blocks 104 on each guide rail 103 is equal; a rack 115 is arranged on the outer side of one of the guide rails 103, the rack 115 is positioned at one end of the clean water tank 106 and is spaced from the guide rail 103 by a certain distance, so that the sliding block 104 can smoothly pass through the rack; the bearing workbench 108 is provided with the transverse baffle plate 109 at one end close to the turbid water tank 107, the longitudinal baffle plate 110 is arranged along the longitudinal center, and the transverse baffle plate 109 and the longitudinal baffle plate 110 are connected with the bearing workbench 108 in a welding way; two clamping cylinders 111 are arranged at one end close to the clean water tank 106, two movable transverse baffles 112 are connected with the two clamping cylinders 111, and two side movable longitudinal baffles 113 and a plurality of side small cylinders 114 are respectively arranged at the inner side close to the guide rails 103 at two sides;

the gantry frame 2 is composed of a transverse beam 201, a longitudinal beam 202, a vertical column 203, a reinforcing plate 204, a vertical column connecting plate 205, a walking motor vertical column connecting plate 206, a guide column flange 213, a screw rod flange 214, a front guard plate 215, a rear guard plate 215 and a left guard plate 216; the two transverse beams 201 are equal in length and parallel to each other, the two ends of the two transverse beams are provided with longitudinal beams 202 which are equal in length and parallel to each other, the two longitudinal beams 202 and the two transverse beams 201 are connected through welding to form a rectangular rigid horizontal frame, and the upper surfaces of the two longitudinal beams 202 and the two transverse beams 201 are in the same plane; the lower surfaces of two ends of two longitudinal beams 202 of the rectangular rigid horizontal frame are respectively provided with the upright posts 203 and are connected with the rectangular rigid horizontal frame in a welding way; a reinforcing plate 204 is arranged at the lower end of the upright 203 and is connected with the upright 203 in a welding way, an upright connecting plate 205 and a walking motor upright connecting plate 206 are respectively arranged below the reinforcing plate 204 and are connected with the reinforcing plate 204 through bolts, so that two vertical closed rigid frames are formed, and the two vertical closed rigid frames and the rectangular rigid horizontal frame form a rigid gantry frame 2; a plurality of slide block fixing holes 208, a plurality of frame fixing holes 207, a plurality of guide column flange fixing holes 209, a walking motor mounting hole 210, a walking motor fixing hole 211 and a screw rod flange fixing hole 212 are arranged on the upright post connecting plate 205 and the walking motor upright post connecting plate 206; in the two vertically closed rigid frames, guide post flanges 213 are symmetrically arranged at the positions close to the two upright posts 203 from top to bottom, and the upper guide post flange 213 and the lower guide post flange 213 are arranged on the same central line; a screw rod flange 214 is respectively arranged in the middle position of the upper guide column flange 213 and the lower guide column flange 214 are on the same central line; a front guard plate 215, a rear guard plate 215, a left guard plate 216 and a right guard plate 216 are arranged on the outer surface of the gantry frame 2 and are connected with the gantry frame 2 through screws; the upright post connecting plate 205 and the walking motor upright post connecting plate 206 are connected with a plurality of slide blocks 104 positioned on the working bed 1 into a whole by bolts penetrating through the slide block fixing holes 208;

the guide posts 3 are symmetrically distributed in a vertical closed rigid frame of the gantry frame 2, inserted into the guide post flanges 213 on the lower surface of the longitudinal beam 202 and the guide post flanges 213 on the upper surfaces of the upright post connecting plate 205 and the walking motor upright post connecting plate 206, and firmly fixed; the guide posts 3 are parallel to each other;

the synchronous lifter 4 consists of two lifting slide blocks 401, a lifting adjusting handle 402, a synchronous lifting connecting shaft 403 and two lead screws 404; the lead screws 404 are positioned in a vertical closed rigid frame which is symmetrically distributed on the gantry frame 2, inserted into the lead screw flange 214 positioned on the lower surface of the longitudinal beam 202 and the lead screw flange 214 positioned on the upper surfaces of the upright post connecting plate 205 and the walking motor upright post connecting plate 206, and firmly fixed; the two lead screws 404 should be parallel to each other; a lifting slider 401 is arranged in the middle of each screw rod 404, a lifting adjusting handle 402 is arranged on one lifting slider 401, and a synchronous lifting connecting shaft 403 is arranged between the two lifting sliders 401; the synchronous lifter 4 is positioned in a rectangular hollow box body 601 of the milling shaft box 6, the lifting slider 401 and the milling shaft box 6 are connected into a whole by a bolt penetrating through a lifting slider fixing hole 610, and when the lifting adjusting handle 402 is shaken, the lifting slider 401 moves up and down along the lead screw 404 so as to drive the milling shaft box 6 to move up and down;

the driving device 5 is composed of two driving motors 501, two driving cloth pulleys 502, two driving transmission cloth belts 503, a plurality of transmission cloth belt adjusting valve blocks 504, a plurality of transmission cloth belt adjusting holes 505, a driving motor fixing seat 506, a plurality of milling shaft lifting holes 507, a plurality of driving motor fixing seat connecting holes 508, two driving motor mounting holes 509 and a plurality of driving motor connecting holes 510; the upper surface of the driving motor fixing seat 506 is provided with two driving motor mounting holes 509, a plurality of driving motor connecting holes 510 and a plurality of milling shaft lifting holes 507, bosses extending out of two ends of the driving motor fixing seat are respectively provided with a plurality of driving motor fixing seat connecting holes 508, and two side surfaces of the driving motor fixing seat are respectively provided with two transmission cloth belt adjusting holes 505; the rotating shaft of each driving motor 501 penetrates through a driving motor mounting hole 509 to be connected with the driving cloth belt wheel 502, each driving motor 501 is arranged on a driving motor fixing seat 506, the driving motor 501 is fixed on the driving motor fixing seat 506 through a bolt penetrating through a driving motor connecting hole 510, and the driving motor fixing seat 506 is connected with the milling shaft box 6 into a whole through a bolt penetrating through a driving motor fixing seat connecting hole 508; the driving cloth belt wheel 502 is positioned at the center of two rows of a plurality of driven cloth belt wheels 603 which are symmetrically distributed, each row of the driven cloth belt wheels 603 is provided with a transmission cloth belt adjusting valve block 504, and the driving transmission cloth belt 503 is simultaneously connected with the driving cloth belt wheel 502 and the plurality of driven cloth belt wheels 603 to realize synchronous rotation of the driving cloth belt wheel 502 and the plurality of driven cloth belt wheels 603;

the milling shaft box 6 is composed of a rectangular hollow box body 601, a plurality of milling shafts 602, a plurality of driven belt distributing wheels 603, a plurality of milling shaft flanges 604, a plurality of guide sleeve flanges 605, a plurality of guide sleeves 606, a lead screw mounting hole 607, a guide sleeve flange connecting hole 608, a guide post mounting hole 609 and a lifting slide block fixing hole 610;

two ends of the upper surface of the rectangular hollow box body 601 are respectively provided with a lead screw mounting hole 607, two guide sleeve flanges 605, a plurality of driving motor fixing seat connecting holes 508 and a plurality of guide sleeve flange connecting holes 608; two rows of a plurality of milling shaft flanges 604 and a plurality of transmission cloth belt regulating valve blocks 504 are arranged in the middle of the upper surface of the rectangular hollow box body 601; a milling shaft 602 is arranged in each milling shaft flange 604, a driven belt distributing wheel 603 is arranged at the upper end of each milling shaft 602, and a guide column mounting hole 609 is formed in the center of each guide sleeve flange 605;

two ends of the lower surface of the rectangular hollow box body 601 are respectively provided with a lead screw mounting hole 607, two guide sleeve flanges 605, a plurality of guide sleeve flange connecting holes 608 and a plurality of lifting slide block fixing holes 610; two rows of a plurality of milling shaft flanges 604 and cooling devices 7 are arranged in the middle of the lower surface of the rectangular hollow box body 601; a milling shaft 602 is arranged in each milling shaft flange 604, a dovetail milling cutter 8 is arranged at the lower end of each milling shaft 602, and a guide column mounting hole 609 is formed in the center of each guide sleeve flange 605;

a synchronous lifter 4 is arranged in the rectangular hollow box body 601, and two lifting slide blocks 401 of the synchronous lifter 4 are fixed with the rectangular hollow box body 601 into a whole through a plurality of bolts positioned in lifting slide block fixing holes 610 to drive the milling shaft box 6 to move up and down; the guide sleeve 606 is arranged between the guide sleeve flanges 605 on the upper surface and the lower surface at the two ends of the rectangular hollow box body 601, and the guide column 3 is arranged in the guide sleeve 606; the milling shaft box 6 moves up and down along the guide column 3 through the lifter 4 positioned in the milling shaft box;

the cooling device 7 consists of a main water pipe 701 and a plurality of fine water pipes 702; the main water pipe 701 is arranged at the center of the lower surface of the rectangular hollow box body 601, a plurality of thin water pipes 702 corresponding to the two rows of milling shafts 602 are arranged on two sides of the main water pipe 701, and cooling water from the thin water pipes 702 timely cools the dovetail milling cutter 8 on one hand and reduces dust generated when the dovetail milling cutter 8 processes the concrete dovetail groove 11 on the other hand, so that the environment is protected from being polluted;

the dovetail milling cutters 8 are umbrella-shaped disc alloy cutters and are positioned at the lower ends of the milling shafts 602;

the walking driving device 9 consists of a walking motor 901 and a walking driving gear 902; the walking motor 901 is positioned at one end of the walking motor upright post connecting plate 206, and a rotating shaft of the walking motor 901 is connected with the walking driving gear 902 through the walking motor mounting hole 210; the walking motor 901 and the walking motor upright post connecting plate 206 are connected into a whole through bolts positioned in the walking motor fixing holes 211, and the walking driving gear 902 is matched with the rack 115 on the lathe bed 101; the walking motor 901 drives the walking driving gear 902, and the walking driving gear 902 moves back and forth along the rack 115 to drive the gantry frame 2 to move back and forth.

Description of the drawings:

FIG. 1 is a schematic perspective view of a dovetail groove processing apparatus for concrete blocks of the present invention;

FIG. 2 is a schematic left view of the dovetail groove processing equipment for concrete blocks of the present invention;

fig. 3 is a schematic perspective view of the dovetail groove processing apparatus for concrete blocks of the present invention (with a front and rear guard plate 215, viewed from the right front);

fig. 4 is a schematic perspective view of the dovetail groove processing apparatus for concrete blocks of the present invention (with front and rear guard plates 215 and left and right guard plates 216, as viewed from the left rear side);

fig. 5 is a schematic perspective view (viewed from the left rear side) of the dovetail groove processing apparatus for concrete blocks of the present invention;

FIG. 6 is a schematic top view of the dovetail groove processing equipment for concrete blocks of the present invention;

fig. 7 is a schematic perspective view of a working bed 1 of the concrete block dovetail groove processing device of the present invention;

FIG. 8 is a schematic perspective view of a gantry frame 2 of the concrete block dovetail groove processing apparatus of the present invention;

fig. 9 is a schematic perspective view of the positional relationship between the gantry frame 2, the guide post 3 and the lead screw 404 of the concrete block dovetail groove processing apparatus of the present invention;

fig. 10 is a schematic perspective view of the positional relationship between the gantry frame 2 and the guide post 3, the lead screw 404, the guide sleeve 606, and the guide sleeve flange 605 of the concrete block dovetail groove processing apparatus of the present invention;

fig. 11 is a schematic perspective view showing the mutual positional relationship between the gantry frame 2 and the guide post 3, the lead screw 404, the guide sleeve 606, the guide sleeve flange 605 and the lifter 4 of the concrete block dovetail groove processing equipment of the present invention;

fig. 12 is a schematic perspective view of the mutual positional relationship between the driving device 5 and the milling spindle box 6 of the concrete block dovetail groove processing device of the present invention;

fig. 13 is a schematic perspective view of the mutual positional relationship between the driving motor fixing seat 506 and the milling spindle box 6 of the concrete block dovetail groove processing device of the present invention;

fig. 14 is a schematic perspective view (viewed from below) of the positional relationship among the milling spindle box 6, the cooling device 7 and the dovetail cutter 8 of the concrete block dovetail groove processing apparatus of the present invention;

fig. 15 is a schematic view of the milling spindle box 6, the cooling device 7 and the dovetail cutter 8 of the concrete block dovetail groove processing device according to the present invention;

fig. 16 is a schematic perspective view of a concrete block dovetail groove processing apparatus according to the present invention, which is prepared to process a dovetail groove 11 on a concrete block 10;

fig. 17 is a schematic perspective view of the concrete block dovetail groove processing apparatus of the present invention completing the processing of the dovetail groove 11 on the concrete block 10;

in the figure:

1 is a working bed

101 is a lathe bed

102 is a bed leg

103 is a guide rail

104 is a slide block

105 is a wire groove

106 is a clear water tank

107 is a turbid water tank

108 is a bearing workbench

109 is a transverse baffle

110 is a longitudinal partition

111 is a clamping cylinder

112 is a movable transverse baffle

113 is a side movable longitudinal baffle

114 is a small cylinder on the side

115 is a rack

2 is a gantry frame

201 is a transverse beam

202 is a longitudinal beam

203 is a column

204 is a reinforcing plate

205 is a column connecting plate

206 is a connecting plate of a walking motor upright post

207 is a frame fixing hole

208 is a slide block fixing hole

209 is a guide post flange fixing hole

210 is a mounting hole of a walking motor

211 is a walking motor fixing hole

212 is a screw flange fixing hole

213 is guide column flange

214 is a screw flange

215 are front and rear guard plates

216 are left and right guard plates

3 is a guide post

4 is a synchronous elevator

401 is a lifting slide block

402 is a lifting adjusting handle

403 is a synchronous lifting connecting shaft

404 is a lead screw

5 is a driving device

501 is a driving motor

502 is a driving belt wheel

503 is a driving transmission cloth belt

504 is a transmission cloth tape regulating valve block

505 are transmission cloth belt adjusting holes

506 is a driving motor fixing seat

507 is a milling shaft lifting hole

508 is a driving motor fixing seat connecting hole

509 is a mounting hole of a driving motor

510 is a driving motor connecting hole

6 for milling shaft box

601 is a rectangular hollow box body

602 is a milling shaft

603 is a driven cloth belt wheel

604 is a milling shaft flange

605 is a guide sleeve flange

606 is a guide sleeve

607 is a lead screw mounting hole

608 is a guide sleeve flange connecting hole

609 is a guide post mounting hole

610 is a lifting slide block fixing hole

7 is a cooling device

701 is main water pipe

702 is a thin water pipe

8 is a dovetail milling cutter

9 is a walking driving device

901 is a walking motor

902 is a walking driving gear

10 is a concrete block

11 is a dovetail groove

Detailed Description

The utility model is realized in the following, the description is further made by combining the attached drawings 1-17: a concrete block dovetail groove processing device is composed of a working bed 1, a gantry frame 2, a guide post 3, a synchronous lifter 4, a driving device 5, a milling shaft box 6, a cooling device 7, a dovetail milling cutter 8 and a walking driving device 9;

The utility model relates to a concrete block dovetail processing equipment production technology flow as follows:

1) checking whether all parts of the equipment are normal or not, and running empty;

2) stacking the concrete blocks 10 on a bearing workbench 108 by a manipulator;

3) a plurality of small side cylinders 114 positioned at two sides of the working bed push the side movable longitudinal baffle 113 to push the irregular concrete blocks 10 to the longitudinal partition 110, so that the concrete blocks 10 are arranged in order;

4) the clamping cylinder 111 drives the movable transverse baffle 112 to push the concrete block 10 on the bearing workbench 108 to the transverse baffle 109;

5) the two clamping cylinders 111 and the plurality of small side cylinders 114 simultaneously clamp the concrete block 10;

6) rotating the lifter 4, enabling the lifting slide block 401 to move up and down along the lead screw 404, driving the milling shaft box 6 to move up and down along the guide post 3, adjusting the height of the dovetail milling cutter 8 and locking;

7) starting a drive motor 501 of the drive device 5;

8) the cooling device 7 is turned on;

9) starting the walking driving device 9;

10) the walking driving motor 901 of the walking driving device 9 drives the walking driving gear 902, the walking driving gear 902 drives the gantry frame 2, the milling shaft box 6 and the cooling device 7 which are positioned on the gantry frame 2 to move along the rack 115 on the working bed 1, and a plurality of dovetail milling cutters 8 process the concrete blocks 10 into dovetail grooves 11; the cooling water cools the dovetail milling cutter 8, and simultaneously reduces dust pollution generated when the dovetail milling cutter 8 processes the dovetail 11, and turbid water containing dust flows back to the turbid water tank 107 and is recycled after precipitation;

11) after the dovetail groove 11 is machined, automatically returning to the initial position and stopping the machine;

12) the two clamping cylinders 111 and the plurality of small side cylinders 114 return to the initial positions at the same time;

13) the manipulator takes the concrete block 10 processed with the dovetail groove 11 down from the bearing workbench 108 and places the concrete block on a supporting plate;

14) the load bearing table 108 is cleaned of concrete residues in preparation for the next cycle.

Claims

1. The utility model provides a concrete block dovetail processing equipment which characterized in that: the automatic milling machine is composed of a working bed (1), a gantry frame (2), a guide column (3), a synchronous elevator (4), a driving device (5), a milling shaft box (6), a cooling device (7), a dovetail milling cutter (8) and a walking driving device (9);

the working bed (1) is composed of a bed body (101), bed legs (102), a guide rail (103), a sliding block (104), a guide wire groove (105), a clear water groove (106), a turbid water groove (107), a bearing working table (108), transverse baffles (109), a longitudinal partition plate (110), two clamping cylinders (111), two movable transverse baffles (112), a plurality of side movable longitudinal baffles (113), a plurality of side small cylinders (114) and a rack (115); the bed legs (102) are positioned below the bed body (101), are distributed on two sides of the bed body (101) in two rows and are connected with the bed body (101) in a welding way; the wire guide groove (105) is positioned below one side of the lathe body (101) and is connected with the lathe body (101) in a welding way; a clear water tank (106) and a turbid water tank (107) are respectively arranged at the longitudinal two ends of the bed body (101); the bearing workbench (108) is arranged in the middle of the bed body (101), is connected with the clean water tank (106) and the turbid water tank (107) at two ends and is higher than the clean water tank (106) and the turbid water tank (107); the guide rails (103) are arranged on two longitudinal sides of the lathe bed (101), the length of each guide rail (103) is equal to that of the lathe bed (101), the guide rails (103) on the two sides of the lathe bed (101) are parallel to each other, the upper surfaces of the two guide rails (103) are in the same plane, and the guide rails (103) are connected with the lathe bed (101) through bolts; two sliding blocks (104) are arranged on each guide rail (103), and the distance between the two sliding blocks (104) on each guide rail (103) is equal; a rack (115) is arranged on the outer side of one guide rail (103), the rack (115) is positioned at one end of the clean water tank (106) and is spaced from the guide rail (103) by a certain distance, so that the sliding block (104) can smoothly pass through the rack; one end of the bearing workbench (108) close to the turbid water tank (107) is provided with the transverse baffle (109), the longitudinal baffle (110) is arranged along the longitudinal center, and the transverse baffle (109) and the longitudinal baffle (110) are connected with the bearing workbench (108) in a welding way; two clamping cylinders (111) are arranged at one end close to the clean water tank (106), two movable transverse baffles (112) are connected with the two clamping cylinders (111), and two side movable longitudinal baffles (113) and a plurality of side small cylinders (114) are respectively arranged at the inner side close to the guide rails (103) at two sides;

the gantry frame (2) is composed of a transverse beam (201), a longitudinal beam (202), an upright post (203), a reinforcing plate (204), an upright post connecting plate (205), a walking motor upright post connecting plate (206), a guide post flange (213), a screw rod flange (214), a front guard plate (215), a rear guard plate (215) and a left guard plate and a right guard plate (216); the two transverse beams (201) are equal in length and parallel to each other, the two ends of the two transverse beams are provided with longitudinal beams (202) which are equal in length and parallel to each other, the two longitudinal beams (202) and the two transverse beams (201) are connected through welding to form a rectangular rigid horizontal frame, and the upper surfaces of the two longitudinal beams are in the same plane; the lower surfaces of two ends of two longitudinal beams (202) of the rectangular rigid horizontal frame are respectively provided with the upright posts (203) and are connected with the rectangular rigid horizontal frame in a welding way; the lower end of the upright post (203) is provided with a reinforcing plate (204) and is connected with the upright post (203) in a welding way, an upright post connecting plate (205) and a walking motor upright post connecting plate (206) are respectively arranged below the reinforcing plate (204) and are connected with the reinforcing plate (204) through bolts, so that two vertical closed rigid frames are formed, and the two vertical closed rigid frames and the rectangular rigid horizontal frame form a rigid gantry frame (2); a plurality of sliding block fixing holes (208), a plurality of frame fixing holes (207), a plurality of guide column flange fixing holes (209), a walking motor mounting hole (210), a walking motor fixing hole (211) and a lead screw flange fixing hole (212) are formed in the upright post connecting plate (205) and the walking motor upright post connecting plate (206); in the two vertical closed rigid frames, guide column flanges (213) are symmetrically arranged at the positions close to the two upright columns (203) from top to bottom, and the upper guide column flange and the lower guide column flange (213) are arranged on the same central line; a screw rod flange (214) is respectively arranged at the middle position of the upper guide column flange (213) and the lower guide column flange (214), and the upper screw rod flange and the lower screw rod flange (214) are on the same central line; a front guard plate and a rear guard plate (215) and a left guard plate and a right guard plate (216) are arranged on the outer surface of the gantry frame (2) and are connected with the gantry frame (2) through screws; the upright post connecting plate (205), the walking motor upright post connecting plate (206) and a plurality of sliding blocks (104) positioned on the working bed (1) are connected into a whole by bolts penetrating through sliding block fixing holes (208);

the guide posts (3) are positioned in a vertical closed rigid frame which is symmetrically distributed on the gantry frame (2), inserted into guide post flanges (213) positioned on the lower surfaces of the longitudinal beams (202) and guide post flanges (213) positioned on the upper surfaces of the upright post connecting plate (205) and the walking motor upright post connecting plate (206), and fixed firmly; the guide posts (3) are parallel to each other;

the synchronous lifter (4) consists of two lifting slide blocks (401), a lifting adjusting handle (402), a synchronous lifting connecting shaft (403) and two lead screws (404); the lead screws (404) are positioned in a vertical closed rigid frame which is symmetrically distributed on the gantry frame (2), inserted into a lead screw flange (214) positioned on the lower surface of the longitudinal beam (202) and lead screw flanges (214) positioned on the upper surfaces of the upright post connecting plate (205) and the walking motor upright post connecting plate (206), and firmly fixed; the two lead screws (404) are parallel to each other; a lifting slide block (401) is arranged in the middle of each screw rod (404), a lifting adjusting handle (402) is arranged on one lifting slide block (401), and a synchronous lifting connecting shaft (403) is arranged between the two lifting slide blocks (401); the synchronous lifter (4) is positioned in a rectangular hollow box body (601) of the milling shaft box (6), a bolt penetrating through a lifting slide block fixing hole (610) is adopted to connect the lifting slide block (401) and the milling shaft box (6) into a whole, and when the lifting adjusting handle (402) is shaken, the lifting slide block (401) moves up and down along a lead screw (404) so as to drive the milling shaft box (6) to move up and down;

the driving device (5) is composed of two driving motors (501), two driving cloth belt wheels (502), two driving transmission cloth belts (503), a plurality of transmission cloth belt adjusting valve blocks (504), a plurality of transmission cloth belt adjusting holes (505), a driving motor fixing seat (506), a plurality of milling shaft lifting holes (507), a plurality of driving motor fixing seat connecting holes (508), two driving motor mounting holes (509) and a plurality of driving motor connecting holes (510); the upper surface of the driving motor fixing seat (506) is provided with two driving motor mounting holes (509), a plurality of driving motor connecting holes (510) and a plurality of milling shaft lifting holes (507), bosses extending out of two ends of the driving motor fixing seat are respectively provided with a plurality of driving motor fixing seat connecting holes (508), and two side surfaces of the driving motor fixing seat are respectively provided with two transmission cloth belt adjusting holes (505); the rotating shaft of each driving motor (501) penetrates through a driving motor mounting hole (509) to be connected with a driving cloth belt wheel (502), each driving motor (501) is arranged on a driving motor fixing seat (506), the driving motor (501) is fixed on the driving motor fixing seat (506) through a bolt penetrating through a driving motor connecting hole (510), and the driving motor fixing seat (506) is connected with a milling shaft box (6) into a whole through a bolt penetrating through a driving motor fixing seat connecting hole (508); the driving cloth belt wheel (502) is positioned at the center of two rows of a plurality of driven cloth belt wheels (603) which are symmetrically distributed, each row of the driven cloth belt wheels (603) is provided with a transmission cloth belt adjusting valve block (504), and the driving transmission cloth belt (503) is simultaneously connected with the driving cloth belt wheel (502) and the plurality of driven cloth belt wheels (603) so as to realize synchronous rotation of the driving cloth belt wheel (502) and the plurality of driven cloth belt wheels (603);

the milling shaft box (6) is composed of a rectangular hollow box body (601), a plurality of milling shafts (602), a plurality of driven belt distributing wheels (603), a plurality of milling shaft flanges (604), a plurality of guide sleeve flanges (605), a plurality of guide sleeves (606), a lead screw mounting hole (607), a guide sleeve flange connecting hole (608), a guide post mounting hole (609) and a lifting slide block fixing hole (610);

two ends of the upper surface of the rectangular hollow box body (601) are respectively provided with a lead screw mounting hole (607), two guide sleeve flanges (605), a plurality of driving motor fixing seat connecting holes (508) and a plurality of guide sleeve flange connecting holes (608); two rows of a plurality of milling shaft flanges (604) and a plurality of transmission cloth belt adjusting valve blocks (504) are arranged in the middle of the upper surface of the rectangular hollow box body (601); a milling shaft (602) is arranged in each milling shaft flange (604), a driven belt distributing wheel (603) is arranged at the upper end of each milling shaft (602), and a guide column mounting hole (609) is formed in the center of each guide sleeve flange (605);

two ends of the lower surface of the rectangular hollow box body (601) are respectively provided with a lead screw mounting hole (607), two guide sleeve flanges (605), a plurality of guide sleeve flange connecting holes (608) and a plurality of lifting slide block fixing holes (610); two rows of a plurality of milling shaft flanges (604) and cooling devices (7) are arranged in the middle of the lower surface of the rectangular hollow box body (601); a milling shaft (602) is arranged in each milling shaft flange (604), a dovetail milling cutter (8) is arranged at the lower end of each milling shaft (602), and a guide column mounting hole (609) is formed in the center of each guide sleeve flange (605);

a synchronous lifter (4) is arranged in the rectangular hollow box body (601), and two lifting slide blocks (401) of the synchronous lifter (4) are fixed with the rectangular hollow box body (601) into a whole through a plurality of bolts positioned in lifting slide block fixing holes (610) to drive the milling shaft box (6) to move up and down; the guide sleeve (606) is arranged between guide sleeve flanges (605) on the upper surface and the lower surface at two ends of the rectangular hollow box body (601), and the guide column (3) is arranged in the guide sleeve (606); the milling shaft box (6) moves up and down along the guide column (3) through a lifter (4) positioned in the milling shaft box;

the cooling device (7) is composed of a main water pipe (701) and a plurality of thin water pipes (702); the main water pipe (701) is arranged at the center of the lower surface of the rectangular hollow box body (601), a plurality of thin water pipes (702) corresponding to the two rows of milling shafts (602) are arranged on two sides of the main water pipe (701), and cooling water from the thin water pipes (702) is used for timely cooling the dovetail milling cutter (8) on one hand, reducing dust generated when the dovetail milling cutter (8) processes a concrete dovetail groove (11) on the other hand, and protecting the environment from being polluted;

the dovetail milling cutters (8) are umbrella-shaped disc alloy cutters and are positioned at the lower ends of the milling shafts (602);

the walking driving device (9) is composed of a walking motor (901) and a walking driving gear (902); the walking motor (901) is positioned at one end of the walking motor upright post connecting plate (206), and a rotating shaft of the walking motor (901) is connected with the walking driving gear (902) through the walking motor mounting hole (210); the walking motor (901) and the walking motor upright post connecting plate (206) are connected into a whole through bolts positioned in the walking motor fixing holes (211), and the walking driving gear (902) is mutually inosculated with the rack (115) on the lathe bed (101); the walking motor (901) drives the walking driving gear (902), and the walking driving gear (902) moves back and forth along the rack (115) to drive the gantry frame (2) to move back and forth.