CN209597546U - A kind of dip-coating centrifugation apparatus with feeding device - Google Patents

Abstract

The utility model discloses a kind of dip-coating centrifugation apparatus with feeding device, a kind of dip-coating centrifugation apparatus with feeding device, including the first framework, second framework, liquid storage box, material-storing box, centrifugal mechanism and elevating mechanism, the material-storing box reticulates structure, the liquid storage box is connected with elevating mechanism, the material-storing box is connected with centrifugal mechanism, the liquid storage box is arranged in the inside of the first framework, the material-storing box is arranged in the inside of liquid storage box, the centrifugal mechanism is arranged in the inside of second framework, first framework is welded on the top of second framework, the side of first framework is additionally provided with feed mechanism.The utility model passes through the design of elevating mechanism and centrifugal mechanism, can separate Dacroment masking liquid with workpiece after the completion of Work piece immersion, carries out centrifugal treating to workpiece by centrifugal mechanism.The utility model saves workpiece transfer step, improves work efficiency, and workpiece is transported in storing frame by feed mechanism, reduces the labor intensity of employee.

Description

A kind of dip-coating centrifugation apparatus with feeding device

Technical field

The utility model relates to Dacroment coat processing technique field, in particular to a kind of dip-coating with feeding device from Heart equipment.

Background technique

Dacroment is DACROMET transliteration and abbreviation, and abbreviation Dacroment reaches gram a rust, dick dragon.The country is named as zinc chrome painting Layer, is a kind of with zinc powder, aluminium powder, chromic acid and deionized water novel anticorrosive paint as main component.

Dacroment coating processes are broadly divided into dip-coating, spraying, hang several classes such as painting, wherein based on dip-coating.In dip-coating work In skill, dip-coating in Dacroment liquid is first put the workpiece in, then by centrifuge centrifuge dripping, is then formed a film using baking. Above-mentioned dip-coating and centrifugal process are carried out separately, and workpiece need to be transferred to centrifugation apparatus from dipping system after the completion of dip-coating In, then carry out centrifugal process.The above process is not only cumbersome, but also transfer process also needs manpower and material resources, influences working efficiency, together When in putting the workpiece in Dacroment liquid usually be all manual handling, the large labor intensity of such employee works at the same time efficiency Also not high.

Chinese Patent Application No. is that CN201620839956.5 discloses a kind of Dacroment coating centrifugation one convenient to use Body machine, dip-coating case lower end are equipped with intermediate box, and bottom plate is equipped between dip-coating case and intermediate box, and intermediate box lower end is equipped with liquid holding box, in Between between case and liquid holding box be equipped with partition, partition upper center be equipped with fixing seat, fixing seat upper end be equipped with centrifugation motor, centrifugation electricity Pusher side wall is equipped with fixed frame, and the transmission shaft of centrifugation motor upper end is upward through bottom plate and enters in dip-coating case, and transmission shaft upper end passes Dynamic connection centrifugal basket bottom centre, dip-coating case top are equipped with cover board, drain pipe, drain are equipped between dip-coating bottom portion and liquid holding box Pipe is equipped with valve, and the pump housing is equipped in intermediate box, and pump housing one end connects pipette, and pipette protrudes into bottom in liquid holding box, the pump housing The other end connects inlet tube, and inlet tube upper end connects dip-coating case side wall, and inlet tube is equipped with valve, and dip-coating box inner wall is equipped with First agitating device, the masking liquid needs of the device are duplicate to be shifted in dip-coating case and liquid holding box, and the time of waste is more, work effect Rate bottom.

Summary of the invention

The purpose of this utility model is to provide a kind of dip-coating centrifugation apparatus with feeding device, to solve the prior art In whole in caused drawbacks described above or one.

A kind of dip-coating centrifugation apparatus with feeding device, including the first framework, second framework, liquid storage box, material-storing box, from Concentric mechanism and elevating mechanism, the material-storing box reticulate structure, and the liquid storage box is connected with elevating mechanism, the material-storing box with Centrifugal mechanism is connected, and the liquid storage box is arranged in the inside of the first framework, and the material-storing box is arranged in the inside of liquid storage box, institute The inside that centrifugal mechanism is arranged in second framework is stated, first framework is welded on the top of second framework, first framework Side be additionally provided with feed mechanism.

Preferably, the centrifugal mechanism include motor, the first screw rod, first handle, the first nut, support rod, support shaft, First sliding block, the first sliding rail, the second sliding block, the second sliding rail, actuator, first bevel gear, gear, the second screw rod, second handle, Second nut, third sliding block, third sliding rail, second bevel gear, third hand tap gear, the 4th bevel gear, Rotational Cylindrical and top cover, it is described 4th bevel gear and gear are mounted in Rotational Cylindrical, and the second bevel gear is mounted in the rotation axis of motor, first spiral shell Bar one end and support rod are rotatablely connected, and the other end welds together with first handle, first screw rod and second framework screw thread Connection, the first bevel gear and support shaft rotation connection, the support shaft and support rod are fixedly connected on the top of the first sliding block Portion, first sliding block are slidably connected with the first sliding rail, and second sliding block is slidably connected with the second sliding rail, second sliding rail It is fixedly connected on the top of support rod, second sliding block is equipped with sliding slot, and upper end and the sliding slot of the actuator are slidably connected, Lower end is fixedly connected with first bevel gear, and the right side of second sliding block is equipped with double wedge, the third sliding block and third sliding rail It is slidably connected, the third hand tap gear is rotatably connected on third sliding block, and second screw rod one end and the rotation of third sliding block connect It connects, the other end welds together with second handle, and second screw rod is threadedly coupled with second framework, and the top cover, which is welded on, to be turned The top of dynamic column, the top of the top cover is also fixedly connected with rectangular preiection, the lower rotation of the Rotational Cylindrical and the first framework Connection.

Preferably, the elevating mechanism include the first elevating mechanism and the second elevating mechanism, first elevating mechanism and Second elevating mechanism structure is identical and is arranged symmetrically, and first elevating mechanism includes cylinder, connecting plate, third screw rod and fastening Nut, the cylinder are mounted on the bottom of the first framework, and one end of the connecting plate is welded on the outer surface of liquid storage box, and described Three screw rods are welded on the telescopic shaft of cylinder, and the third screw rod passes through connecting plate, and removable by fastening nut and connecting plate Unload connection.

Preferably, at middle through post is equipped at cylindrical and liquid storage box center, the middle through post can cover the liquid storage box The diameter of middle through post is less than the diameter of top cover simultaneously in Rotational Cylindrical.

Preferably, the cross section of the material-storing box is equipped with convex with rectangle at concave, at the center of the material-storing box Corresponding through slot is played, material-storing box is socketed in top cover with matching for through slot by rectangular preiection.

Preferably, it is additionally provided with threaded hole on the rectangular preiection, the threaded hole is threaded with the 4th screw rod, and described It is welded with handle at the top of four screw rods, is welded with limited block in the middle part of the 4th screw rod.

Preferably, the feed mechanism 8 includes two the first supporting beams being arranged symmetrically, d-axis, the second motor, slows down Machine, third support plate, two the second supporting beam, driving roller, driven roller, conveyer belt and the third motors being arranged symmetrically, institute The one end for stating the first supporting beam is welded on the side of the first framework, and the d-axis is rotatably connected between two first supporting beams, One end of the d-axis passes through the first supporting beam and connect with speed reducer, and the rotation axis of one end of the speed reducer and the second motor connects It connects, the speed reducer and the second motor are mounted in third support plate, and the bottom of two second supporting beams and d-axis weld Together, the driving roller and driven roller are rotatably connected on the two sides of two second supporting beams, the driving roller and The rotation axis of three motors links together, and the third motor is mounted on the side of the second supporting beam, and the conveyer belt is wrapped in Between driving roller and driven roller, the inside of first framework, which also tilts, is fixedly connected with stock guide, and described two second The both ends of supporting beam have also been respectively fixedly connected with striker plate and limit plate, and the outer surface of first framework is also welded with block, The position of the block and the position of limit plate are corresponding.

Preferably, lid mechanism is also connected at the top of first framework.

Preferably, the lid mechanism includes lid, guide rod and diagonal brace, and the bottom of the lid is equipped with sliding slot, described Guide rod is welded in the first framework, is flush at the top of the top of the guide rod and the first framework, the lid passes through cunning Slot is slidably connected at the top edge of the first framework with guide rod, and described diagonal brace one end is welded on the bottom of guide rod, another End is welded on the surface of the first framework.

The beneficial effects of the utility model are: the utility model passes through the design of elevating mechanism and centrifugal mechanism, it can be in work After the completion of part dip-coating, Dacroment masking liquid is separated with workpiece, centrifugal treating is carried out to workpiece by centrifugal mechanism.The utility model Structure is simple, easy to use, saves workpiece transfer step, improves work efficiency, while Rotational Cylindrical can carry out back rotation, improves The dip-coating effect of workpiece.

Workpiece is transported in storing frame by feed mechanism, reduces the labor intensity of employee, while further being promoted Working efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram one of specific embodiment of the present utility model.

Fig. 2 is the structural schematic diagram two of specific embodiment of the present utility model.

Wherein, the first framework 1, second framework 2, liquid storage box 3, material-storing box 4, centrifugal mechanism 5, elevating mechanism 6, lid mechanism 7, feed mechanism 8, motor 51, the first screw rod 52, first handle 53, the first nut 54, support rod 55, support shaft 56, first are sliding Block 57, the first sliding rail 58, the second sliding block 59, the second sliding rail 510, actuator 511, first bevel gear 512, gear 513, the second spiral shell Bar 514, second handle 515, the second nut 516, third sliding block 517, third sliding rail 518, second bevel gear 519, triconodont Take turns the 520, the 4th bevel gear 521, Rotational Cylindrical 522, top cover 523, rectangular preiection 524, the 4th screw rod 526, handle 527, limited block 528, the first elevating mechanism 61, the second elevating mechanism 62, cylinder 63, connecting plate 64, third screw rod 65, fastening nut 66, in lead to Column 31, through slot 41, lid 71, guide rod 72, diagonal brace 73, the first supporting beam 81, d-axis 82, the second motor 83, speed reducer 84, Three support plates 85, the second supporting beam 86, driving roller 87, driven roller 88, conveyer belt 89, third motor 810, stock guide 811, Striker plate 812, limit plate 813, block 814.

Specific embodiment

Below by the description to embodiment, the shape of for example related each component of specific embodiment of the present utility model Shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and operation Application method etc., is described in further detail, to help inventive concept of the those skilled in the art to the utility model, technology Scheme has more complete, accurate and deep understanding.

As shown in Figs. 1-2, a kind of dip-coating centrifugation apparatus with feeding device, including the first framework 1, second framework 2, storage Liquid box 3, material-storing box 4, centrifugal mechanism 5 and elevating mechanism 6, the material-storing box 4 reticulate structure, the liquid storage box 3 and elevator Structure 6 is connected, and the material-storing box 4 is connected with centrifugal mechanism 5, and the liquid storage box 3 is arranged in the inside of the first framework 1, described Material-storing box 4 is arranged in the inside of liquid storage box 3, and the centrifugal mechanism 5 is arranged in the inside of second framework 2, and first framework 1 is welded It connects at the top of second framework 2, the side of first framework 1 is additionally provided with feed mechanism 8.

In the present embodiment, the centrifugal mechanism 5 includes motor 51, the first screw rod 52, first handle 53, the first nut 54, support rod 55, support shaft 56, the first sliding block 57, the first sliding rail 58, the second sliding block 59, the second sliding rail 510, actuator 511, First bevel gear 512, gear 513, the second screw rod 514, second handle 515, the second nut 516, third sliding block 517, third are sliding Rail 518, second bevel gear 519, third hand tap gear 520, the 4th bevel gear 521, Rotational Cylindrical 522 and top cover 523, the 4th cone Gear 521 and gear 513 are mounted in Rotational Cylindrical 522, and the second bevel gear 519 is mounted in the rotation axis of motor 51, institute It states 52 one end of the first screw rod and support rod 55 is rotatablely connected, the other end welds together with first handle 53, first screw rod 52 are threadedly coupled with second framework 2, and the first bevel gear 512 is rotatablely connected with support shaft 56, the support shaft 56 and support Bar 55 is fixedly connected on the top of the first sliding block 57, and first sliding block 57 is slidably connected with the first sliding rail 58, and described second is sliding Block 59 is slidably connected with the second sliding rail 510, and second sliding rail 510 is fixedly connected on the top of support rod 55, and described second is sliding Block 59 is equipped with sliding slot, and the upper end of the actuator 511 is slidably connected with sliding slot, and lower end is fixedly connected with first bevel gear 512, The right side of second sliding block 59 is equipped with double wedge, and the third sliding block 517 is slidably connected with third sliding rail 518, the third Bevel gear 520 is rotatably connected on third sliding block 517, and described second screw rod, 514 one end and third sliding block 517 are rotatablely connected, separately One end welds together with second handle 515, and second screw rod 514 is threadedly coupled with second framework 2, and the top cover 523 is welded Connect at the top of Rotational Cylindrical 522, the top of the top cover 523 is also fixedly connected with rectangular preiection 524, the Rotational Cylindrical 522 with The lower rotation of first framework 1 connects.

In the present embodiment, the elevating mechanism 6 include the first elevating mechanism 61 and the second elevating mechanism 62, described first Elevating mechanism 61 is identical with 62 structure of the second elevating mechanism and is arranged symmetrically, and first elevating mechanism 61 includes cylinder 63, connects Fishplate bar 64, third screw rod 65 and fastening nut 66, the cylinder 63 are mounted on the bottom of the first framework 1, the connecting plate 64 One end is welded on the outer surface of liquid storage box 3, and the third screw rod 65 is welded on the telescopic shaft of cylinder 63, the third screw rod 65 It is detachably connected across connecting plate 64, and by fastening nut 66 with connecting plate 64.

In the present embodiment, the liquid storage box 3 is at being equipped with middle through post 31 at cylindrical and liquid storage box 3 center, it is described in Through post 31 can cover in Rotational Cylindrical 522 while the diameter of middle through post 31 is less than the diameter of top cover 523.

In the present embodiment, the cross section of the material-storing box 4 is equipped at concave at the center of the material-storing box 4 Material-storing box 4 is socketed in top with matching for through slot 41 by rectangular preiection 524 by through slot 41 corresponding with rectangular preiection 524 On set 523.

In the present embodiment, it is additionally provided with threaded hole on the rectangular preiection 524, the threaded hole is threaded with the 4th spiral shell Bar 526, the top of the 4th screw rod 526 are welded with handle 527, and the middle part of the 4th screw rod 526 is welded with limited block 528。

In the present embodiment, the feed mechanism 8 includes two the first supporting beams 81 being arranged symmetrically, d-axis 82, second Motor 83, speed reducer 84, third support plate 85, two be arranged symmetrically the second supporting beam 86, driving roller 87, driven roller 88, conveyer belt 89 and third motor 810, one end of first supporting beam 81 are welded on the side of the first framework 1, the d-axis 82 are rotatably connected between two first supporting beams 81, and one end of the d-axis 82 passes through the first supporting beam 81 and speed reducer 84 Connection, the rotation axis connection of one end of the speed reducer 84 and the second motor 83, the speed reducer 84 and the installation of the second motor 83 In third support plate 85, the bottom of two second supporting beams 86 welds together with d-axis 82, the driving roller 87 The two sides of two second supporting beams 86 are rotatably connected on driven roller 88, the driving roller 87 turns with third motor 810 Moving axis links together, and the third motor 810 is mounted on the side of the second supporting beam 86, and the conveyer belt 89 is wrapped in actively Between idler wheel 87 and driven roller 88, the inside of first framework 1, which also tilts, is fixedly connected with stock guide 811, and described two The both ends of second supporting beam 86 have also been respectively fixedly connected with striker plate 812 and limit plate 813, the outer surface of first framework 1 It is also welded with block 814, the position of the block 814 is corresponding with the position of limit plate 813.

In the present embodiment, the top of first framework 1 is also connected with lid mechanism 7.

In the present embodiment, the lid mechanism 7 includes lid 71, guide rod 72 and diagonal brace 73, the bottom of the lid 71 Portion is equipped with sliding slot, and the guide rod 72 is welded in the first framework 1, the top at the top of the guide rod 72 and the first framework 1 It is flush, the lid 71 is slidably connected at the top edge of the first framework 1 with guide rod 72 by sliding slot, the diagonal brace 73 one end are welded on the bottom of guide rod 72, and the other end is welded on the surface of the first framework 1.

Working principle of the utility model is: Dacroment masking liquid is added in liquid storage box 3, Workpiece storage to be processed is existed On conveyer belt 89, then start the second motor 83 and conveyer belt 89 is rotated, when conveyer belt 89 is turned to close to the first framework 1 One end controls the stopping of the second motor 83 when being higher than the top of the first framework 1, then start third motor 810, third motor 810 It drives conveyer belt 89 to rotate, the workpiece on conveyer belt 89 is transmitted in material-storing box 4 by stock guide 811, starts cylinder at this time 63, so that cylinder 63 drives liquid storage box 3 to move up, so that the masking liquid in liquid storage box 3 submerges workpiece, pass through rotation the at this time One handle 53, so that first bevel gear 512 is meshed with second bevel gear 519, while rotating second handle 515, so that third Bevel gear 520 separates with second bevel gear 519, opens motor 51, and the work of motor 51 drives second bevel gear 519 to rotate, and second Bevel gear 519 drives first bevel gear 512 to rotate, so that actuator 511 is rotated with first bevel gear 512, actuator 511 exists It is mobile in sliding slot that the second sliding block 59 is driven to move back and forth, drive Rotational Cylindrical 522 to turn round so that gear 513 carrys out back rotation Dynamic, the rotation of Rotational Cylindrical 522 drives material-storing box 4 to carry out back rotation, to improve the dip-coating effect of workpiece, cylinder is controlled after the completion of dip-coating 63 return to original position, so that masking liquid is separated with workpiece, close motor, pass through rotation first handle 53 and second-hand at this time Handle 515, so that first bevel gear 512 is separated with second bevel gear 519, third hand tap gear 520 and second bevel gear 519 and the 4th Bevel gear 521 engages, and starts motor 51, drives Rotational Cylindrical 522 to do centrifugal movement to a direction rotation by connection relationship.

The utility model is exemplarily described above in conjunction with embodiment, it is clear that the utility model implements not It is limited by aforesaid way, as long as using the method concept of the utility model and various unsubstantialities that technical solution carries out Improve, or it is not improved the conception and technical scheme of the utility model are directly applied into other occasions, it is practical new at this Within the protection scope of type.The protection scope of the utility model should be determined by the scope of protection defined in the claims.

Claims (8)

1. a kind of dip-coating centrifugation apparatus with feeding device, which is characterized in that including the first framework (1), second framework (2), Liquid storage box (3), material-storing box (4), centrifugal mechanism (5) and elevating mechanism (6), the material-storing box (4) reticulate structure, the liquid storage Box (3) is connected with elevating mechanism (6), and the material-storing box (4) is connected with centrifugal mechanism (5), and the liquid storage box (3) is arranged in The inside of first framework (1), the material-storing box (4) are arranged in the inside of liquid storage box (3), and the centrifugal mechanism (5) is arranged in The inside of two frameworks (2), first framework (1) are welded on the top of second framework (2), the side of first framework (1) It is additionally provided with feed mechanism (8)；

The feed mechanism (8) includes two the first supporting beams (81) being arranged symmetrically, d-axis (82), the second motor (83), subtracts Fast machine (84), third support plate (85), two be arranged symmetrically the second supporting beam (86), driving roller (87), driven roller (88), one end of conveyer belt (89) and third motor (810), first supporting beam (81) is welded on the side of the first framework (1) Face, the d-axis (82) are rotatably connected between two first supporting beams (81), and one end of the d-axis (82) passes through first Support beam (81) is connect with speed reducer (84), one end of the speed reducer (84) and the rotation axis connection of the second motor (83), described Speed reducer (84) and the second motor (83) are mounted on third support plate (85), the bottom of two second supporting beams (86) with D-axis (82) welds together, and the driving roller (87) and driven roller (88) are rotatably connected on two second supporting beams (86) Two sides, the driving roller (87) and the rotation axis of third motor (810) link together, third motor (810) peace Mounted in the side of the second supporting beam (86), the conveyer belt (89) is wrapped between driving roller (87) and driven roller (88), The inside of first framework (1), which also tilts, to be fixedly connected with stock guide (811), the both ends of two second supporting beams (86) It is also respectively fixedly connected with striker plate (812) and limit plate (813), the outer surface of first framework (1) is also welded with block (814), the position of the block (814) is corresponding with the position of limit plate (813).

2. a kind of dip-coating centrifugation apparatus with feeding device according to claim 1, it is characterised in that: the centrifuge Structure (5) includes motor (51), the first screw rod (52), first handle (53), the first nut (54), support rod (55), support shaft (56), the first sliding block (57), the first sliding rail (58), the second sliding block (59), the second sliding rail (510), actuator (511), the first cone Gear (512), gear (513), the second screw rod (514), second handle (515), the second nut (516), third sliding block (517), Third sliding rail (518), second bevel gear (519), third hand tap gear (520), the 4th bevel gear (521), Rotational Cylindrical (522) and top It covers (523), the 4th bevel gear (521) and gear (513) are mounted on Rotational Cylindrical (522), the second bevel gear (519) It is mounted in the rotation axis of motor (51), described first screw rod (52) one end and support rod (55) are rotatablely connected, the other end and the One handle (53) welds together, and first screw rod (52) is threadedly coupled with second framework (2), the first bevel gear (512) it is rotatablely connected with support shaft (56), the support shaft (56) and support rod (55) are fixedly connected on the first sliding block (57) Top, first sliding block (57) are slidably connected with the first sliding rail (58), and second sliding block (59) and the second sliding rail (510) are sliding Dynamic connection, second sliding rail (510) are fixedly connected on the top of support rod (55), and second sliding block (59), which is equipped with, to be slided The upper end of slot, the actuator (511) is slidably connected with sliding slot, and lower end is fixedly connected with first bevel gear (512), and described second The right side of sliding block (59) is equipped with double wedge, and the third sliding block (517) is slidably connected with third sliding rail (518), the third cone Gear (520) is rotatably connected on third sliding block (517), and described second screw rod (514) one end and third sliding block (517) rotation connect It connects, the other end welds together with second handle (515), and second screw rod (514) is threadedly coupled with second framework (2), institute The top that top cover (523) is welded on Rotational Cylindrical (522) is stated, the top of the top cover (523) is also fixedly connected with rectangular preiection (524), the Rotational Cylindrical (522) connect with the lower rotation of the first framework (1).

3. a kind of dip-coating centrifugation apparatus with feeding device according to claim 2, it is characterised in that: the elevator Structure (6) includes the first elevating mechanism (61) and the second elevating mechanism (62), first elevating mechanism (61) and the second elevator Structure (62) structure is identical and is arranged symmetrically, and first elevating mechanism (61) includes cylinder (63), connecting plate (64), third screw rod (65) and fastening nut (66), the cylinder (63) are mounted on the bottom of the first framework (1), one end weldering of the connecting plate (64) The outer surface in liquid storage box (3) is connect, the third screw rod (65) is welded on the telescopic shaft of cylinder (63), the third screw rod (65) connecting plate (64) are passed through, and is detachably connected by fastening nut (66) with connecting plate (64).

4. a kind of dip-coating centrifugation apparatus with feeding device according to claim 3, it is characterised in that: the liquid storage box (3) at middle through post (31) are equipped at cylindrical and liquid storage box (3) center, the middle through post (31) can cover in Rotational Cylindrical (522) The diameter of upper while middle through post (31) is less than the diameter of top cover (523).

5. a kind of dip-coating centrifugation apparatus with feeding device according to claim 4, it is characterised in that: the material-storing box (4) cross section is equipped with through slot corresponding with rectangular preiection (524) at concave at the center of the material-storing box (4) (41), material-storing box (4) is socketed on top cover (523) with matching for through slot (41) by rectangular preiection (524).

6. a kind of dip-coating centrifugation apparatus with feeding device according to claim 2, it is characterised in that: the rectangle is convex It rises and is additionally provided with threaded hole on (524), the threaded hole is threaded with the 4th screw rod (526), the top of the 4th screw rod (526) Portion is welded with handle (527), is welded with limited block (528) in the middle part of the 4th screw rod (526).

7. a kind of dip-coating centrifugation apparatus with feeding device according to claim 1, it is characterised in that: first frame Lid mechanism (7) are also connected at the top of body (1).

8. a kind of dip-coating centrifugation apparatus with feeding device according to claim 7, it is characterised in that: the lid machine Structure (7) includes lid (71), guide rod (72) and diagonal brace (73), and the bottom of the lid (71) is equipped with sliding slot, the guide rod (72) it is welded on the first framework (1), is flush at the top of the top and the first framework (1) of the guide rod (72), the lid Body (71) is slidably connected at the top edge of the first framework (1) with guide rod (72) by sliding slot, described diagonal brace (73) one end It is welded on the bottom of guide rod (72), the other end is welded on the surface of the first framework (1).