CN211109546U

CN211109546U - Manual transfer trolley for spraying paint on outer surface of medium-sized long and thin cylindrical part

Info

Publication number: CN211109546U
Application number: CN201921867765.XU
Authority: CN
Inventors: 李崇华; 刘平; 秦志刚; 周云罡; 王健; 王敏辉
Original assignee: Jiangnan Industries Group Co Ltd
Current assignee: Jiangnan Industries Group Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-28
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a transfer trolley for manually spraying paint on the outer surface of a medium-sized long and thin cylindrical part, which comprises a locking and positioning mechanism, a frame assembly, a product positioning device and an anti-falling and positioning mechanism; the frame assembly comprises a vehicle body, a thrust bearing, a base and an upright post; a plurality of groups of rollers are arranged at the bottom of the trolley body, and each group of rollers comprises two rollers which are symmetrically arranged; the trolley body is provided with a stepped hole and two upright posts, the stepped surface of the stepped hole is provided with a thrust bearing, the base is arranged on the thrust bearing, and the outer side wall of the base is provided with a plurality of handles; the tops of the two upright posts are connected through a fixed beam; the locking and positioning mechanism is arranged at one end of the vehicle body; the product positioning device is matched with the central hole of the base; the anti-falling positioning mechanism is arranged on the fixed beam. The utility model discloses both had the transportation function of traditional dolly, can realize functions such as manual spraying paint, hoop winding again on the dolly to the long and thin section of thick bamboo surface of centering type, and the practicality is strong.

Description

Manual transfer trolley for spraying paint on outer surface of medium-sized long and thin cylindrical part

Technical Field

The utility model relates to a transportation of cylinder, paint spraying apparatus, in particular to manual the spraying paint of medium-sized long and thin cylinder surface is with transporting dolly.

Background

Usually, when manual painting, in order to prevent paint from causing harm to human bodies, workshops are provided with one or more fixed air draft points. In order to ensure that the paint scattered in the air is smoothly discharged, the products are all arranged on a fixed frame which is not far away from an air suction opening, and people stand in the position range corresponding to the air opening to operate. Because the wind power range is limited, the number of products which can be placed is very limited, and after the spraying is finished each time, the products are removed after the paint is dried in order to protect the paint surface from being damaged, so that the production period is increased virtually, and the production efficiency is reduced. And the manufacturing cost and the maintenance cost of establishing an automation line are all higher, to not too big, the limited condition in production place in batches, and utility model a labour saving and time saving's frock is especially important.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a simple structure makes things convenient for the long and thin cylinder surface of centering type to realize manual spraying paint, hoop winding, and makes things convenient for the manual transfer dolly that sprays paint of the long and thin cylinder surface of medium-sized that the long and thin cylinder transported.

The utility model adopts the technical proposal that: a transfer trolley for manually spraying paint on the outer surface of a medium-sized long and thin cylindrical part comprises a locking positioning mechanism, a frame assembly, a product positioning device and an anti-falling positioning mechanism;

the frame assembly comprises a vehicle body, a thrust bearing, a base and an upright post; a plurality of groups of rollers are arranged at the bottom of the trolley body, and each group of rollers comprises two rollers which are symmetrically arranged; the vehicle body is arranged on the guide rail through a plurality of groups of rollers; the vehicle body is provided with a stepped hole and two upright posts, the axis of the stepped hole is vertically arranged, a thrust bearing is arranged on the stepped surface of the stepped hole, the base is arranged on the thrust bearing, and the base can rotate; a plurality of handles are arranged on the outer side wall of the base; the central hole of the base is a stepped hole; the tops of the two upright posts are connected through a fixed beam; the locking and positioning mechanism is arranged at one end of the vehicle body and is used for matching with a locking seat on the guide rail to realize vehicle body positioning;

the product positioning device comprises a support and a plurality of rubber plates, wherein the support comprises a cylindrical support part and a stepped shaft connecting part; the upper part of an inner hole of the cylindrical supporting part is conical with a large upper part and a small lower part, and a plurality of rubber plates are arranged on the side wall of the cylindrical supporting part; the stepped shaft connecting part is arranged at the bottom of the cylindrical supporting part and matched with the central hole of the base; the anti-falling positioning mechanism is arranged on the fixed beam and used for preventing the medium-sized slender cylindrical part from falling.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical part, the locking and positioning mechanism comprises a locking body, a locking pin, a spring, a screw cover and a lever; the locking body is connected with one end of the vehicle body; the locking body is provided with a locking pin hole, the locking pin is inserted in the locking pin hole, the locking pin is provided with a flange, the upper part in the locking pin hole is provided with a screw cap, the locking pin penetrates through the screw cap, the locking pin is sleeved with a spring, and the spring is positioned between the flange and the screw cap; the top of the locking pin is provided with a connecting groove, and the side wall of the connecting groove is provided with a connecting hole; one end of the lever is provided with a kidney-shaped hole, the end of the lever is inserted into the connecting groove and is hinged with the connecting groove through a bolt, and the bolt penetrates through a connecting hole in the side wall of the connecting groove and the kidney-shaped hole in the lever; one end of the locking body is provided with a flange, and the middle part of the lever is arranged on the flange.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized long and thin cylindrical part, the upright column and the locking and positioning mechanism are arranged at the same end of the trolley body.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized long and thin cylindrical part, the anti-falling positioning mechanism comprises a connecting rod, a bearing seat, a bearing, a rotating shaft, a connecting plate and a limiting pin; one end of the connecting rod is hinged with a connecting rod seat on a fixed beam of the upright column, the other end of the connecting rod is fixedly connected with the bearing seat, the bearing is arranged in the bearing seat, the axis of the bearing is perpendicular to the axis of the connecting rod, and the bearing can be coaxial with the thrust bearing; one end of the rotating shaft is connected with the inner ring of the bearing; the middle part of the connecting plate is fixedly arranged on the rotating shaft, and the connecting plate is vertical to the rotating shaft; and two ends of the connecting plate are respectively and fixedly provided with a limiting pin, and the axis of the limiting pin is parallel to the axis of the rotating shaft.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized long and thin cylindrical part, the bearing seat comprises a bearing sleeve, a cover plate and a dust cover; the bearing sleeve is of a circular ring structure and is welded with the connecting rod; the cover plate and the dust cover are respectively arranged at two ends of the bearing sleeve through screws; the rotating shaft penetrates through a central hole of the dustproof cover and is installed in an inner ring of the bearing, and the rotating shaft is axially positioned relative to the bearing through the check ring and the shaft shoulder.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized long and thin cylindrical part, the top of the fixed beam is provided with the connecting rod seat, the section of the connecting rod seat is U-shaped, the side wall of the connecting rod seat is provided with the connecting hole and the limiting hole I, the limiting hole I is a threaded hole, a threaded sleeve is arranged in one limiting hole I, and a pull rod is arranged in a central hole of the threaded sleeve; the connecting rod is hinged with a connecting hole on the connecting rod seat through a pin shaft; be equipped with spacing hole II on the connecting rod, when the connecting rod fell down, spacing hole II was coaxial with spacing hole I, and the pull rod can pass spacing hole II, spacing hole I, realizes the connecting rod location.

In the transfer trolley for manually spraying paint on the outer surface of the medium-sized long and thin cylindrical part, the two sides of the trolley body are respectively provided with the guard plates, the two guard plates are respectively positioned on the outer sides of the two rails of the guide rail, the lower ends of the guard plates are provided with the flanges, and the flanges are arranged in the grooves in the side surfaces of the rails.

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

1. the utility model discloses both had the transportation function of traditional dolly, can realize functions such as manual spraying paint, hoop winding again on the dolly to the long and thin section of thick bamboo surface of centering type, and the practicality is strong.

2. The utility model discloses a change product positioner and prevent that positioning device comes to realize coaxial rotation to the medium-sized long and thin cylinder of different diameters size, the commonality is good.

3. The utility model discloses a prevent that it is equipped with coaxial bearing and thrust bearing on positioner and the product positioner to fall, can realize the follow-up of medium-sized long and thin cylinder, has avoided only limiting product one end in the conventional production and has the potential safety hazard of empting.

4. The utility model discloses a same one end at the automobile body, convenient operation, labour saving and time saving are established to locking positioning mechanism and stand.

5. The utility model discloses an automobile body side both sides are equipped with the backplate of preventing turning on one's side, have improved security and reliability greatly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the locking and positioning mechanism of the present invention.

Fig. 3 is a left side view of the locking and positioning mechanism of the present invention.

Fig. 4 is a front view of the frame assembly of the present invention.

Fig. 5 is a cross-sectional view of the frame assembly of the present invention.

Fig. 6 is a front view of the vehicle body of the present invention.

Fig. 7 is a sectional view taken along line B-B in fig. 6.

Fig. 8 is a half-sectional view of the base of the present invention.

Fig. 9 is a top view of the base of the present invention.

Fig. 10 is a block diagram of the product positioning device of the present invention.

Fig. 11 is a structural view of the support of the present invention.

Fig. 12 is a view from direction a in fig. 11.

Fig. 13 is a front view of the tilting prevention mechanism of the present invention.

Fig. 14 is a left side view of the tilting prevention mechanism of the present invention.

Fig. 15 is a schematic diagram of a link assembly according to the present invention.

Fig. 16 is a schematic structural view of the tilting prevention mechanism of the present invention when it is unscrewed.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the utility model comprises a locking and positioning mechanism 1, a frame assembly 2, a product positioning device 3 and an anti-falling and positioning mechanism 4.

Referring to fig. 4 and 5, the frame assembly 2 is composed of an end cover 17, a retainer ring 18, a radial ball bearing 19, a roller 20, a screw 21, a shaft 23, a backing plate 24, a guard plate 25, a screw 26, a vehicle body 27, a baffle 28, a base 29, a screw 30, a thrust ball bearing 31, a handle 32, a fixed beam 33, two upright posts 34 and a lock nut 35. As shown in fig. 6 and 7, the vehicle body 27 is a rectangular parallelepiped casting, the middle of the vehicle body is provided with a stepped hole 271 for installing the thrust ball bearing 31, the outer side of the stepped hole 271 is uniformly provided with 4 waist-shaped lightening holes 272, both ends of the bottom of the vehicle body 27 are provided with through grooves 273 for installing the shaft 23, and the middle of the through grooves 273 is provided with a slightly larger slotted hole to avoid interference with the middle of the shaft 23.

The bottom of the car body 27 is provided with two sets of rollers 20 (the number of the rollers 20 is not limited to two sets, and can be more than two sets), each set of rollers 20 comprises two rollers 20 which are symmetrically arranged, and the car body is arranged on the guide rail through two sets of rollers. Two shafts 23 are fixed at the bottom of a vehicle body 27 through screws 21, the shafts 23 are arranged perpendicular to the guide rails, two ends of each shaft 23 extend out of the vehicle body 27, and the rollers 20 are mounted at the ends of the shafts 23 through bearings 19; the bearing 19 is sealed by an end cap 17, and the end cap 17 is screwed with the roller 20 to prevent dust and the like from entering the bearing 19. Two sides of the vehicle body 27 are respectively provided with a guard plate 25 through screws, and a backing plate 24 is arranged between the guard plate 25 and the vehicle body 27. The two guard plates 25 are respectively positioned at the outer sides of the two rails of the guide rail, and the lower ends of the guard plates 25 are provided with flanges which are arranged in grooves on the side surfaces of the rails.

The vehicle body 27 is provided with a stepped hole 271 and two upright posts 34. The upright column 34 is formed by connecting two steel pipes, external threads are turned at two ends of each steel pipe, the lower end of each steel pipe is installed on the vehicle body 27 through threads, and the upright column 34 is locked by two round nuts 35 after the vertical size is adjusted. The upper ends of the two upright posts are provided with a fixed beam 33, two ends of the fixed beam 33 are provided with two circular through holes, and the upright posts 34 penetrate through the circular holes and are fastened by two circular nuts, so that the vehicle body 27, the two upright posts 34 and the fixed beam 33 form a stable rectangular frame. The vertical setting of axis of shoulder hole 271, be equipped with thrust bearing 31 on the step face of shoulder hole, base 29 install on thrust bearing 31, base 29 passes through the shaft shoulder and fixes a position at thrust bearing 31 top surface, the bottom is through screw 30 connection baffle 28, baffle 28 is for the step face location in the shoulder hole on the body 27, base 29 can rotate. 4 handles 32 are uniformly arranged on the outer side wall of the base 29, and when spraying paint, the handles 32 are pushed by feet to drive the products on the support 36 to rotate. The central hole of the base 29 is a stepped hole. As shown in fig. 8 and 9, the base 29 is a stepped shaft, the central hole 291 is a stepped hole, the diameter of the lower part of the central hole 291 is smaller than that of the upper part, a through groove 292 is milled at the top of the central hole 291, and the bottom surface of the through groove 292 is a positioning surface for the support 36, so that the support 36 does not rotate relatively and does not move linearly left and right after being installed. The channel 292 also facilitates the insertion of a hand into the channel during product handling and provides a bearing surface for the support 36.

As shown in fig. 2 and 3, the locking and positioning mechanism 1 includes a locking body 5, a locking pin 6, a spring 7, a screw cap 9, a lever 10, a cylindrical pin 11, a bolt 14, a connecting seat 15 and a stop screw 16.

The locking body 5 is a cuboid, and the locking body 5 is connected with one end of the vehicle body 27. The locking body 5 is provided with a locking pin hole which is a step-shaped round hole. The locking pin 6 is inserted in the locking pin hole, the locking pin 6 is provided with a flange, the upper part in the locking pin hole is provided with a screw cap 9, the upper end of the locking pin 6 penetrates through the screw cap 9, the locking pin 6 is sleeved with a spring 7, and the spring 7 is positioned between the flange and the screw cap 9. The top of locking pin 6 be equipped with spread groove 15, the lateral wall of spread groove 15 on be equipped with the connecting hole. One end of the lever 10 is provided with a waist-shaped hole, the end of the lever 10 is inserted into the connecting groove and is hinged with the connecting groove through a bolt 14, and the bolt 14 penetrates through a connecting hole in the side wall of the connecting groove and the waist-shaped hole in the lever 10. One end of the locking body 5 is provided with a flange 51, and the middle part of the lever 10 is arranged on the flange 51 and takes the flange 51 as a fulcrum. Two cylindrical pins 11 are arranged on the flange 51, and the two cylindrical pins 11 are positioned on two sides of the lever 10 and limit the lever 10. The lock positioning mechanism 1 is located at the same end of the vehicle body 27 as the pillar 34.

When the vehicle body 27 moves to a specified position of a turntable II (the turntable II is positioned at one end of the guide rail) on the ground, the locking pin 6 enters the pin hole of the locking seat I under the action of the spring force to lock the vehicle body 27, and the vehicle body 27 is prevented from moving continuously. At this time, the lever 10 is freely placed on the flange of the locking body 5, two sides of the protrusion are limited by two cylindrical pins 11, and the protrusion is equivalent to the fulcrum of the lever. When the trolley needs to leave the turntable II, a worker holds the upright post 34 by hand, and presses the lever 10 by foot, so that the locking pin 6 overcomes the elasticity of the spring 7, and the locking pin 6 is pulled out from the pin hole of the locking seat I.

As shown in fig. 10-12, the product positioning device 3 includes a support 36 and a plurality of rubber plates 37. The support 36 comprises a cylindrical support part 361 and a stepped shaft connecting part 362; the upper part of the inner hole of the cylindrical supporting part 361 is in a conical shape with a large upper part and a small lower part, the side wall of the cylindrical supporting part 361 is provided with three rubber plates 37, and the three rubber plates 37 are respectively installed on the cylindrical supporting part 361 through bolts 38 and are uniformly arranged along the circumferential direction. The stepped shaft coupling portion 362 is installed at the bottom of the cylindrical support portion, and the stepped shaft coupling portion 362 is engaged with the central hole 291 of the base 29. The ellipsoid head of the product is inserted into the cylindrical supporting part 361, the conical hole at the upper part of the inner hole of the cylindrical supporting part 361 can automatically guide the product, and the rubber plate 37 prevents the product from contacting the support 36 and protects the outer surface of the product from abrasion. The center of the stepped shaft connecting part 362 is provided with a through hole 363, which not only has the function of reducing weight, but also can prevent the product from being attached to the support 36 to generate negative pressure when the rubber plate is pressed too tightly.

As shown in fig. 13-15, the anti-falling positioning mechanism 4 includes a connecting rod 40, a bearing seat (a dust cap 41, a sealing ring 42, a cover plate 45, and a bearing sleeve 47), a retainer ring 43, a rotating shaft 44, a bearing 46, a pin shaft 49, a spring 51, a connecting rod seat 52, a nut sleeve 53, a pull rod 54, a handle ball 55, a bolt 56, a connecting plate 57, a limit pin 58, and a bolt 59.

One end of the connecting rod 40 is hinged to a connecting rod seat 52 on the top of the fixed beam 33, the connecting rod seat 52 is fixedly mounted on the top of the fixed beam 33, the cross section of the connecting rod seat 52 is U-shaped, a connecting hole 521 and a limiting hole I522 are formed in the side wall of the connecting rod seat, the limiting hole I522 is a threaded hole, a threaded sleeve is arranged in the limiting hole I522, a pull rod 541 is arranged in the central hole of the threaded sleeve 53, a handle ball 55 is arranged at the end part of the outer end of the pull rod 54, and the handle ball 55 is convenient. The inner end of the pull rod is provided with a spherical head, the pull rod 54 is sleeved with a spring 51, and the spring 51 is positioned between the spherical head and a threaded sleeve 53. The connecting rod 40 is hinged with a connecting hole 521 on the connecting rod seat 52 through a pin shaft 49. The connecting rod 40 is provided with a limiting hole II, when the connecting rod falls down, the limiting hole II is coaxial with the limiting hole I522, and the pull rod 54 can penetrate through the limiting hole II and the limiting hole I to realize the positioning of the connecting rod 40. The spherical head of the pull rod 54 always keeps the trend of pressing into the limiting hole II of the connecting rod 40 under the action of the elastic force of the spring 51, the connecting rod is automatically pressed into the limiting hole II to be locked after moving in place, when the limiting device needs to be opened, the handle ball 55 is pulled by hand, the spherical head of the pull rod 54 overcomes the elastic force of the spring 51 to slide out of the limiting hole II of the connecting rod 40 under the action of external force, and the connecting rod 40 can be rotated.

The other end of the connecting rod 40 is welded with the bearing sleeve 47. The bearing sleeve 47 is of a circular ring structure, and the cover plate 45 and the dust cover 41 are respectively installed at two ends of the bearing sleeve 47 through screws to form a bearing seat. The bearing 46 is mounted in a bearing housing, the axis of the bearing 46 being arranged perpendicular to the axis of the connecting rod 40, the bearing 46 being able to be coaxial with the thrust bearing 31. The rotating shaft 44 is mounted in the inner race of the bearing 46 through the center hole of the dust cap 41, and the rotating shaft 44 is axially positioned with respect to the bearing 46 by the retaining ring 43 and the shoulder. A sealing ring 42 is arranged between the rotating shaft 44 and the dust cover 41 for sealing, and dust is prevented from entering the bearing 46. The connecting plate 57 is a strip-shaped plate, the middle part of the connecting plate 57 is fixedly arranged on the rotating shaft 44 through a screw 48, and the connecting plate 57 is arranged perpendicular to the rotating shaft 44. Two ends of the connecting plate 57 are respectively and fixedly provided with a limiting pin 58, the limiting pins 58 are arranged on the limiting plates 57 through bolts 56, and the axes of the limiting pins 58 are parallel to the axis of the rotating shaft 44.

The utility model discloses implementation method as follows:

before the product was packed into, earlier on pushing away this car to the carousel assigned position, make the fitting pin 6 of locking positioning mechanism 1 align with the pinhole of the locking seat I on carousel II, the fitting pin 6 inserts under the effect of spring force and installs in the I pinhole of the locking seat on the carousel, makes the utility model discloses it is fixed motionless.

To facilitate the product loading, the handle ball is held by hand to pull the pull rod 54 out of the limiting hole II of the connecting rod, the connecting rod 40 is rotated at the same time, the anti-falling positioning device 4 is turned over, the product positioning device 3 is loaded into the base 29 of the frame assembly 2, and then the product is loaded into the support 36 of the product positioning device 3 for guiding, as shown in FIG. 16. After the product is loaded into the product positioning device 3, the connecting rod 40 is rotated back, and at the same time, the product is rotated to enable the limiting pin 58 in the anti-falling positioning device 4 to be inserted into the inner hole of the product so as to prevent the product from falling. After the pressing connecting rod 40 moves in place, the spherical head of the pull rod 54 is automatically pressed into the limiting hole II of the connecting rod 40 under the action of the elastic force of the spring to lock the anti-falling positioning device 4, and the installation of the product is completed.

The assembled product is sprayed with paint, and a worker holds the spray gun to spray paint and pushes 4 handles 32 uniformly arranged on the base by feet to drive the support 36 on the base 29 so that the product rotates. Meanwhile, the product drives the anti-falling positioning device 4 limiting pin to follow up, the whole process does not need to increase the number of operators to enclose the product to rotate, the whole operation process can be completed by one person, the labor intensity of workers is greatly reduced, and time and labor are saved.

The product sprayed with paint needs to be parked on a trolley before the paint is dried, and the trolley sprayed with paint needs to be pushed away from the paint spraying area in order to enable the next trolley to enter the paint spraying area. At the moment, the turntable is rotated to enable the upper rail of the turntable to be in butt joint with the conveying rail. Then, the handle end of the lever 10 is pressed down by feet, the locking pin 6 overcomes the elasticity of the spring 7 under the action of the lever force, and is pulled out from the pin hole of the locking seat I, so that the trolley can be pushed to enter the guide rail, and the whole operation process is completed.

Claims

1. The utility model provides a medium-sized long and thin cylinder surface manual spraying paint with transporting dolly which characterized by: the device comprises a locking positioning mechanism, a frame assembly, a product positioning device and an anti-falling positioning mechanism;

2. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 1, wherein: the upright post and the locking and positioning mechanism are arranged at the same end of the vehicle body.

3. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 1, wherein: the locking and positioning mechanism comprises a locking body, a locking pin, a spring, a screw cap and a lever; the locking body is connected with one end of the vehicle body; the locking body is provided with a locking pin hole, the locking pin is inserted in the locking pin hole, the locking pin is provided with a flange, the upper part in the locking pin hole is provided with a screw cap, the locking pin penetrates through the screw cap, the locking pin is sleeved with a spring, and the spring is positioned between the flange and the screw cap; the top of the locking pin is provided with a connecting groove, and the side wall of the connecting groove is provided with a connecting hole; one end of the lever is provided with a kidney-shaped hole, the end of the lever is inserted into the connecting groove and is hinged with the connecting groove through a bolt, and the bolt penetrates through a connecting hole in the side wall of the connecting groove and the kidney-shaped hole in the lever; one end of the locking body is provided with a flange, and the middle part of the lever is arranged on the flange.

4. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 1, wherein: the anti-falling positioning mechanism comprises a connecting rod, a bearing seat, a bearing, a rotating shaft, a connecting plate and a limiting pin; one end of the connecting rod is hinged with a connecting rod seat on a fixed beam of the upright column, the other end of the connecting rod is fixedly connected with the bearing seat, the bearing is arranged in the bearing seat, the axis of the bearing is perpendicular to the axis of the connecting rod, and the bearing can be coaxial with the thrust bearing; one end of the rotating shaft is connected with the inner ring of the bearing; the middle part of the connecting plate is fixedly arranged on the rotating shaft, and the connecting plate is vertical to the rotating shaft; and two ends of the connecting plate are respectively and fixedly provided with a limiting pin, and the axis of the limiting pin is parallel to the axis of the rotating shaft.

5. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 4, wherein: the bearing seat comprises a bearing sleeve, a cover plate and a dustproof cover; the bearing sleeve is of a circular ring structure and is welded with the connecting rod; the cover plate and the dust cover are respectively arranged at two ends of the bearing sleeve through screws; the rotating shaft penetrates through a central hole of the dustproof cover and is installed in an inner ring of the bearing, and the rotating shaft is axially positioned relative to the bearing through the check ring and the shaft shoulder.

6. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 1, wherein: the top of the fixed beam is provided with a connecting rod seat, the section of the connecting rod seat is U-shaped, the side wall of the connecting rod seat is provided with a connecting hole and a limiting hole I, the limiting hole I is a threaded hole, a threaded sleeve is arranged in one limiting hole I, and a pull rod is arranged in a central hole of the threaded sleeve; the connecting rod is hinged with a connecting hole on the connecting rod seat through a pin shaft; be equipped with spacing hole II on the connecting rod, when the connecting rod fell down, spacing hole II was coaxial with spacing hole I, and the pull rod can pass spacing hole II, spacing hole I, realizes the connecting rod location.

7. The transfer trolley for manually spraying paint on the outer surface of the medium-sized elongated cylindrical member, as claimed in claim 1, wherein: two sides of the vehicle body are respectively provided with a guard plate, the two guard plates are respectively positioned at the outer sides of the two tracks of the guide rail, the lower ends of the guard plates are provided with flanges, and the flanges are arranged in grooves on the side surfaces of the tracks.