阅读说明：本技术 一种同步均力等速变径筒体内撑圆机构 (Circle expanding mechanism in synchronous uniform force constant speed reducing cylinder ) 是由 任玉峰 田志鹏 成子文 贺向军 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种同步均力等速变径筒体内撑圆机构,用于混凝土搅拌筒的后锥筒体、后锥桶体螺旋叶片和导料筒在机器人自动化焊接前校圆、桶体旋转动力传递和定位,包括后锥筒体较圆机构和导料筒定位校圆机构,二者同轴地安装在一起,所述导料筒校圆机构设置在后锥筒体较圆机构的正面,所述多个校圆挡块形成了内撑后锥筒体筒口校正圆,所述多个校圆滑块形成了内撑导料筒的校正圆。本发明采用两种不同结构的校圆机构配合,实现搅拌筒的后锥筒体及其内部导料筒组装焊接前的校圆、桶体焊接过程中桶体旋转变位的动力传递和定位(保证导料筒和后锥桶体同轴),如此焊接精度高,耗时短,可实现其自动化及半自动化生产,大幅减少了人工成本。(The invention discloses a circle supporting mechanism in a synchronous uniform force constant speed reducer cylinder, which is used for rounding a rear cone cylinder body, a rear cone cylinder body helical blade and a guide cylinder of a concrete mixing cylinder before robot automatic welding and for transmitting and positioning the rotation power of the cylinder body. According to the invention, two circle correcting mechanisms with different structures are matched, so that circle correction before assembling and welding of the rear cone body of the mixing drum and the inner guide cylinder of the mixing drum is realized, and power transmission and positioning of rotating and shifting of the drum body in the welding process of the drum body are realized (the guide cylinder and the rear cone body are ensured to be coaxial).)

1. A circle supporting mechanism in a synchronous uniform force constant speed reducer cylinder is characterized in that a rear cone cylinder and a guide cylinder used for a concrete mixing cylinder are used for circle correction and positioning before welding, the circle supporting mechanism comprises a rear cone cylinder circle comparing mechanism and a guide cylinder circle correcting mechanism which are coaxially arranged together,

the back taper cylinder rounding mechanism comprises a base, a plurality of slideways which are radially distributed on the front surface of the base by taking the center of the base as the center of a circle, rounding sliders positioned in the slideways, a slewing bearing positioned on the back surface of the base by taking the center of the base as the slewing center, a hydraulic cylinder for driving the slewing bearing to rotate, and a first transmission mechanism for driving the rounding sliders to synchronously and radially move when the slewing bearing rotates,

the guide cylinder rounding mechanism comprises a fixed seat, a central driving cylinder arranged in the center of the front surface of the fixed seat, a plurality of guide seats arranged around the central driving cylinder, and rounding stoppers positioned in the guide seats, wherein a crank is arranged on the front surface of the central driving cylinder, and the guide cylinder rounding mechanism also comprises a second transmission mechanism used for driving the rounding stoppers to synchronously and radially move when the crank rotates around the axis of the central driving cylinder,

the guide cylinder circle correcting mechanism is arranged on the front face of the base, the circle correcting blocking blocks form an inner-supporting rear cone cylinder body opening correcting circle, and the circle correcting blocking blocks form an inner-supporting guide cylinder correcting circle.

2. The circle expanding mechanism in a synchronous, uniform-force and constant-speed reducer cylinder according to claim 1, wherein the first transmission mechanism comprises a duplicate gear, a rack arranged in a slideway, and a gear ring arranged on a slewing bearing, wherein the duplicate gear is arranged through a base and is in meshing transmission with the gear ring and the rack respectively, and the rack is fixedly connected to the circle correcting slide block.

3. The synchronous uniform force constant velocity reducer inner rounding mechanism according to claim 1, characterized in that the second transmission mechanism comprises a T-thread ball screw, a lifting plate, and a connecting rod for driving connection of a sliding tongue and the lifting plate, wherein the shaft end of the T-thread ball screw is fixedly connected with the crank, and the lifting plate and the T-thread ball screw both form a screw nut pair.

4. The simultaneous uniform force constant velocity variable diameter cylinder body rounding mechanism according to claim 1, characterized in that the oil supply line of the hydraulic cylinder comprises a center swivel joint, wherein the center swivel joint is provided on the back surface of the base to supply oil to the hydraulic cylinder that swivels with the center of the base.

5. The circle expanding mechanism in the synchronous uniform force constant speed reducer cylinder according to claim 1, wherein the circle correcting block has a sliding part and a block part extending perpendicular to the sliding direction, and the block part is used for suspending and supporting the guide cylinder.

Technical Field

The invention relates to a circle supporting mechanism in a synchronous uniform-force constant-speed reducer cylinder.

Background

Most of the mixing drum of the concrete mixer is obliquely laid on the frame through the supporting device and can rotate around the axis of the mixing drum, and only one drum opening at the rear upper part of the mixing drum is used for charging or discharging through the charging and discharging device respectively.

Two continuous strip-shaped helical blades are symmetrically welded on the inner wall of the mixing drum from the drum opening to the drum bottom, and when the mixing drum rotates, the two blades are driven to make helical motion around the axis of the mixing drum, which is a basic device for mixing or discharging concrete by the mixing drum.

The middle part of the opening of the mixing drum is welded with a material guide drum, concrete is loaded into the mixing drum from the material guide drum, and the material guide drum and the peripheral drum wall form an annular discharge opening.

In the existing mixing drum production process, after a rear cone cylinder body of a mixing drum and an inner material guide cylinder of the mixing drum are assembled and welded, the inner material guide cylinder is lifted to the inside of the cylinder body through a travelling crane and then put down, and then the material guide cylinder is manually moved to a proper position and then welded.

In the prior art, the traveling crane has low moving precision and is difficult to position manually, so that the positioning of the cylinder is long in time consumption, the positioning error is large, and the welding precision is low.

Disclosure of Invention

The invention aims to provide a circle supporting mechanism in a synchronous uniform-force constant-speed reducer cylinder, which is convenient for assembling and welding a rear cone cylinder of a mixing cylinder and an inner guide cylinder of the mixing cylinder.

The invention provides a circle supporting mechanism in a synchronous uniform force constant speed reducer cylinder, which is used for calibrating and positioning a rear cone cylinder and a guide cylinder of a concrete mixing cylinder before welding, and comprises a rear cone cylinder rounding mechanism and a guide cylinder rounding mechanism which are coaxially arranged together, wherein the rear cone cylinder rounding mechanism comprises a base, a plurality of slideways which are radially distributed on the front surface of the base by taking the center of the base as the center of a circle, rounding sliders positioned in the slideways, a slewing bearing positioned on the back surface of the base by taking the center of the base as the center of a circle, a hydraulic cylinder for driving the slewing bearing to deflect, and a first transmission mechanism for driving the rounding sliders to synchronously and radially move when the slewing bearing deflects, wherein the guide cylinder rounding mechanism comprises a fixed seat, a central driving cylinder arranged in the middle of the front surface of the fixed seat, and a plurality of guide seats arranged around the central driving cylinder, The guide cylinder rounding mechanism is arranged on the front face of the base, the plurality of rounding baffles form an inner-support rear cone cylinder body opening correcting circle, and the plurality of rounding baffles form an inner-support guide cylinder correcting circle.

Further, the first transmission mechanism comprises a duplicate gear, a rack arranged in the slideway and a gear ring arranged on the slewing bearing, wherein the duplicate gear penetrates through the base and is in meshing transmission with the gear ring and the rack respectively, and the rack is fixedly connected to the rounding slide block.

Further, the second transmission mechanism comprises a T-shaped thread ball screw, a lifting plate and a connecting rod for driving and connecting the sliding tongue and the lifting plate, wherein the shaft end of the T-shaped thread ball screw is fixedly connected with the crank, and the lifting plate and the T-shaped thread ball screw form a screw nut pair.

Further, the oil supply pipeline of the hydraulic cylinder comprises a center swivel joint, wherein the center swivel joint is arranged on the back surface of the base so as to supply oil to the hydraulic cylinder which swivels along with the center of the base.

Furthermore, the roundness correction baffle block is provided with a sliding part and a baffle block part which extends perpendicular to the sliding direction of the sliding part, and the baffle block part is used for suspending and supporting the guide cylinder.

The invention adopts the matching of two circle correcting mechanisms with different structures to realize the circle correction and the positioning before the assembly welding of the rear cone body of the mixing drum and the inner guide drum thereof, so the welding precision is high, the time consumption is short, the automatic and semi-automatic production can be realized, and the labor cost is greatly reduced. In addition, the circle correcting mechanisms with two different structures have certain reducing adaptive capacity for the cylinders supported by the circle correcting mechanisms respectively.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front structural view of a circle expanding mechanism in a synchronous uniform force constant speed reducer cylinder according to the invention;

FIG. 2 shows an enlarged schematic view of detail A of FIG. 1;

FIG. 3 is a schematic structural view of a rounding mechanism in a guide cylinder according to the present invention;

FIG. 4 is a schematic diagram of the back structure of the circle expanding mechanism in the synchronous uniform force constant speed reducer cylinder according to the invention;

FIG. 5 is a schematic view of the inner circle expanding mechanism of the reducer cylinder according to the present invention;

fig. 6 is a schematic view of the rounding mechanism in the reducer cylinder mounted on the tailstock according to the present invention; and

fig. 7 is a schematic view of the usage state of the rounding mechanism in the reducer cylinder mounted on the tailstock according to the invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1-7 illustrate some embodiments according to the invention.

The circle expanding mechanism in the uniform force constant speed reducing cylinder comprises two parts: 1. the rear cone cylinder rounding mechanism is used for rounding and positioning the rear cone cylinder 100 of the mixing cylinder; 2. the guide cylinder rounding mechanism is used for rounding and positioning the guide cylinder 200, as shown in fig. 5. Both are coaxially mounted together, for example on a tailstock 300, as shown in fig. 6 and 7, both being rotatable about a central axis.

First, circle checking and positioning of rear cone body of mixing drum

The rear cone cylinder rounding mechanism comprises a central rotary joint 1, a fixed base 2, a duplicate gear 3, a rotary support 4, a rotary support mounting plate 5, a mounting seat 6, a hydraulic cylinder 7, a rack 8, a slideway 9, a rounding stop block 10 and a connecting plate 11.

As shown in fig. 1 and 2, a cylinder head and a rod head of a hydraulic cylinder 7 are respectively fixed on a fixed base 2 and a slewing bearing mounting plate 5 through a mounting seat 6, a central slewing joint 1 is arranged on the slewing bearing mounting plate 5 and is connected with a hydraulic pipeline to supply oil to the hydraulic cylinder 7, and a slewing bearing 4 is arranged on the slewing bearing mounting plate 5 and is meshed with duplicate gears 3 uniformly distributed around the slewing bearing mounting plate.

As shown in fig. 3, the duplicate gear 3 is meshed with the slewing bearing 4 on one side and meshed with the rack 8 through the fixed base 2 on the other side, and the rack 8 is connected with the rounding stopper 10 and the connecting plate 11 and can slide in the slide way 9 in the radial direction.

Because the rod head of the piston rod is fixed on the slewing bearing mounting plate 5, when the piston rod of the hydraulic cylinder 7 extends out, the slewing bearing 4 can be driven to rotate and the duplicate gear 3 can be driven to rotate, so that the rack 8 meshed with the duplicate gear 3 can drive the connecting plate 11 and the rounding stop block 10 to slide outwards along the slideway 9 until the rounding stop block 10 touches the cylinder body and stops moving after rounding and positioning.

After the cylinder body is moved to the mechanism installation position, a piston rod of the hydraulic cylinder extends out to drive the slewing bearing 4 to rotate, so that the duplicate gears which are uniformly distributed beside the slewing bearing and are meshed with the slewing bearing are driven. The other side of the gear is meshed with a rack above the gear, the rack can slide in the radial direction in a slide way in the radial direction, and the outside of the rack is connected with a circle correcting stop block.

Therefore, when the piston rod of the hydraulic cylinder extends out, the rounding stop block connected with the rack can move along the slide way in the radial direction. When the school circle dog moved to the barrel, because the barrel blockked, the school circle dog of equipartition around will not remove again, the pneumatic cylinder overflow, stop motion to realize the school circle and the location of barrel.

Second, circle calibration and positioning of material guide cylinder

As shown in fig. 4, the guide cylinder rounding mechanism and the mixing cylinder rear cone rounding mechanism are coaxially mounted together (see fig. 5), the crank 25, the central driving cylinder 24, the ball screw 26 and the lifting plate 27 are coaxially mounted together with the fixed seat 21 by penetrating through the fixed seat 21, and the rounding stoppers 22 are uniformly distributed around the ball screw in the radial direction and are connected to the lifting plate 27 together with the connecting rod 23.

The ball screw 26 is a T-shaped thread, so that the ball screw has a self-locking function.

In the present invention, the shoe 28 itself does not move, providing support and sliding guidance for radial movement of the roundness stop 22. The rounding baffle 22 comprises a sliding part 22a and a baffle part 22b extending perpendicular to the sliding direction, and the baffle part is used for suspending and supporting the guide cylinder.

After the rear cone body is positioned in the circle calibration position, the guide cylinder is moved to the fixed seat 21 of the guide cylinder circle calibration mechanism, a worker drills into the guide cylinder, the crank 25 is manually rotated to rotate the ball screw 26, so that the lifting plate 27 is lifted, and meanwhile, the connecting rod 23 is lifted and drives the circle calibration stop 22 to move outwards in the radial direction. When the roundness correction stop block 22 moves to the barrel, the worker stops rotating the crank 25 due to the blocking of the barrel, and the roundness correction stop blocks uniformly distributed around cannot move any more, so that the roundness correction and the positioning of the barrel are realized.

The synchronous uniform-force constant-speed reducing cylinder rounding mechanism can realize the rounding and positioning of cylinders with different diameters, thereby facilitating the assembly and welding of the rear conical cylinder body of the mixing cylinder and the inner guide cylinder thereof, having high welding precision and short time consumption, realizing the automatic and semi-automatic production and greatly reducing the labor cost.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.