CN111070015A

CN111070015A - Cylindrical steel pipe inner wall grinding machine

Info

Publication number: CN111070015A
Application number: CN201911418287.9A
Authority: CN
Inventors: 王小芳; 汪洋
Original assignee: Henan Hengtuo Electronic Technology Co Ltd
Current assignee: Henan Hengtuo Electronic Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-28

Abstract

The invention discloses a cylindrical steel pipe inner wall grinding machine which comprises a rotary driving mechanism, a radial supporting mechanism and a rotary grinding mechanism, wherein a motor of the rotary driving mechanism is fixedly sleeved in a motor outer frame, a gearbox seat is fixed at the front end of the motor outer frame, a rear ring seat is fixedly arranged at the rear end of the motor outer frame, a sliding ring seat capable of axially sliding is sleeved outside the motor outer frame, a jacking component is connected between the rear ring seat and the sliding ring seat, and all pulley blocks of axial pulley blocks are axially distributed and respectively supported on a bus bar of the cylindrical steel pipe inner wall; the invention can be unfolded to any diameter within the arm length range, and the rotating rod, namely the rotating shaft of the motor can be ensured to be positioned at the axis position of the cylindrical steel pipe no matter how far the rotating rod is unfolded, so that when the motor rotates to work, a plurality of friction layers supported on the inner wall of the cylindrical pipe can be uniformly stressed and can uniformly polish the inner wall of the cylindrical pipe, and the problems of transition polishing or polishing leakage can not occur.

Description

Cylindrical steel pipe inner wall grinding machine

Technical Field

The invention belongs to the technical field of metal pipe fitting processing, and particularly relates to equipment which is applied to the inside of a cylindrical steel pipe and automatically polishes the inner wall of the cylindrical steel pipe.

Background

At present, when a pipe fitting is machined, in order to remove burrs on the surface of a workpiece of a product to make the workpiece smooth and easy to continue machining or reach a finished product, the workpiece needs to be polished, the polishing of the inner wall of the pipe fitting is more difficult than the polishing of the outer wall of the pipe fitting, and the polishing of the inner wall of the pipe fitting with a longer length is more difficult; the existing pipe fitting inner wall polishing device is complex in structure, high in cost, complex in operation, high in requirement on the skill of workers and increased in processing cost. Especially, after the large-scale pipeline is welded, the welding part in the pipeline needs to be polished, so that the inner wall is kept flat. Among the prior art, to polishing of pipeline inner wall, generally adopt the manual work to polish, the handheld polisher of workman polishes inside the pipeline because the space is narrow and small be difficult for turning round, consumes physical power very much during polishing, workman's working strength is very big, and efficiency of polishing is not high. The utility model discloses a pipeline inner wall reducing grinding device of CN 110587415A, it includes reducing grinding machanism, revolution drive part, locate preceding displacement supporting mechanism and the preceding supporting mechanism of polishing of reducing grinding machanism one end, locate back displacement supporting mechanism and the back supporting mechanism of polishing of the reducing grinding machanism other end, reducing grinding machanism is used for polishing the pipeline inner wall, preceding displacement supporting mechanism and back displacement supporting mechanism provide axial displacement for reducing grinding machanism in turn, preceding grinding supporting mechanism and back grinding supporting mechanism are used for providing radial holding power. The reducing of this technical scheme needs to be realized through the drive of revolution drive part, needs to set up the actuating mechanism and the drive mechanism of revolution to its axle center position, and this technical scheme structure is complicated, for guaranteeing that each gyro wheel that supports on inside is all in along the axial operation function, needs to distribute multilayer roller train in edgewise axial, otherwise can't guarantee the concentricity, so caused this technical scheme's complexity. According to the technical scheme, the plurality of layers of roller groups are distributed in the axial direction, so that the axial length of the whole device is large, and the device is not suitable for processing and polishing cylindrical pipe workpieces with short axial lengths.

Disclosure of Invention

Aiming at the problems that the inner wall of a pipe fitting is difficult to polish and the defects and shortcomings of the existing pipe fitting polishing, the invention provides a cylindrical steel pipe inner wall polisher which can be automatically centered, has short axial length, can ensure the axial translation performance, automatically runs and advances or manually pulls to advance, and can be unfolded and folded.

The technical scheme adopted by the invention for solving the technical problems is as follows: a cylindrical steel pipe inner wall polisher comprises a rotary driving mechanism, a radial supporting mechanism and a rotary polishing mechanism, wherein the rotary driving mechanism comprises a motor, a motor outer frame, a gearbox seat and a gearbox, the motor is fixedly sleeved in the motor outer frame, the gearbox seat is fixed at the front end of the motor outer frame, the gearbox is fixed in the gearbox seat, a rotating shaft of the motor is connected with a gearbox input shaft, a rear ring seat is fixedly arranged at the rear end of the motor outer frame, a sliding ring seat capable of axially sliding is sleeved outside the motor outer frame, a jacking component is connected between the rear ring seat and the sliding ring seat, hinge seats are uniformly distributed around the circumferential side face of the gearbox seat, each hinge seat on the front side is respectively hinged with a front swing rod, each hinge seat on the rear side is respectively hinged with a rear swing rod, the front swing rod and the rear swing rod are equal in length, and the tail ends of the front swing rod and the rear swing rod are respectively, each pulley block of the axial pulley block is distributed along the axial direction and is respectively supported on a generatrix of the inner wall of the cylindrical steel pipe; a driving rod is hinged between the sliding ring seat and the middle part of the rear swing rod; the rotary polishing mechanism comprises a rotating rod in transmission connection with an output shaft of the gearbox, pin shafts are respectively and vertically fixed on two sides of the front end of the rotating rod, the front pin shaft and the rear pin shaft are respectively hinged with a front folding rod assembly and a rear folding rod assembly, the outermost ends of the front folding rod assembly and the rear folding rod assembly on each side are hinged with an outer supporting plate, a friction layer is fixed on the outer surface of the outer supporting plate, tension springs are arranged between the front folding rod assembly and the rear folding rod assembly on two sides, and the tension springs are respectively connected between the outer supporting plate and the rotating rod.

The jacking component can be a gas spring, or a common thrust spring, or an electric push rod, or a screw rod.

The front folding rod assembly and the rear folding rod assembly comprise a plurality of rod sections which are sequentially hinged, two adjacent rod sections of the front folding rod assembly are hinged to the front end of the middle supporting plate through pin shafts, and two adjacent rod sections of the rear folding rod assembly at the same position are hinged to the rear end of the middle supporting plate through pin shafts.

And part of wheel shafts of the axial pulley block are in transmission connection with the walking driving mechanism. The walking driving mechanism is characterized in that a walking motor is fixedly arranged on a motor outer frame, a driving belt wheel is arranged on a rotating shaft of the walking motor, a driven belt wheel is arranged on a part of wheel shafts of the axial pulley block, and the driving belt wheel is connected with the driven belt wheel through a transmission belt. Or the walking mechanism is characterized in that a walking motor is fixed at the outer end of the axial pulley block, and a rotating shaft of the walking motor is fixedly or drivingly connected with the outer end of one rotating shaft.

The invention has the beneficial effects that: the grinder for the inner wall of the cylindrical steel pipe can be unfolded and folded, has small volume after being folded, and is bound and fixed after being folded to be beneficial to storage and transfer. The main characteristics of this machine are that can expand to any diameter of its arm length scope, no matter expand to any degree moreover, can both ensure the bull stick and that motor shaft is located the axle center position of cylinder steel pipe to when the motor rotates work, support a plurality of frictional layers at cylinder pipe inner wall can the even atress, polish to cylinder pipe inner wall evenly, the transition is polished or is leaked the problem of polishing can not appear.

The grinding machine has strong self-supporting performance, and the motor outer frame is supported by independent front and rear swing rods, so that the motor is positioned at the axis position in the cylindrical pipe. The front folding rod assembly and the rear folding rod assembly can independently support the corresponding outer supporting plate and the friction layer on the inner wall of the cylindrical pipe.

The automatic polishing machine can also realize automatic operation or manual pulling advance, can be suitable for polishing the inner walls of cylindrical pipes with different pipe diameters, is simple to operate, has a good use effect and low manufacturing cost, and is suitable for popularization and application.

Drawings

Fig. 1 is a schematic view of a sander according to the present invention in use.

Reference numbers in the figures: the device comprises a motor 1, a motor outer frame 2, a rear ring seat 3, a slip ring seat 4, a jacking component 5, a gearbox seat 6, a gearbox 7, a hinge seat 8, an axial pulley block 9, a front swing rod 10, a rear swing rod 11, a driving rod 12, an outer supporting plate 13, a middle supporting plate 14, a front folding rod component 15, a rear folding rod component 16, a rotating rod 17, a tension spring 18, a friction layer 19 and a cylindrical steel pipe 20.

Detailed Description

Example 1: a hand-pull-driven cylindrical steel tube inner wall grinding machine is adopted, as shown in figure 1, the grinding machine can be unfolded and folded when the inner wall of a cylindrical steel tube is ground, and the function is realized by mainly comprising structural components such as a rotary driving mechanism, a radial supporting mechanism, a rotary grinding mechanism and the like.

The rotary driving mechanism comprises a motor 1, a motor outer frame 2, a gearbox seat 6 and a gearbox 7. As can be seen from fig. 1, the motor 1 is fixedly sleeved in the motor outer frame 2, the front end of the motor outer frame 2 is fixedly provided with the transmission case seat 6 (a variable speed motor can be directly selected), and the transmission case 7 is fixedly sleeved in the transmission case seat 6. The rotating shaft of the motor 1 is connected with the input shaft of the gearbox 7.

A rear ring seat 3 is fixedly arranged at the rear end of the motor outer frame 2, a sliding ring seat 4 capable of axially sliding is sleeved outside the motor outer frame 2, and a jacking component 5 is connected between the rear ring seat 3 and the sliding ring seat 4. The top pressing part 5 can have various realization forms, preferably adopts the air spring, utilizes the air spring to be that back ring seat 3 and sliding ring seat 4 can expand by force, and after back ring seat 3 and sliding ring seat 4 compressed, the air spring is in by the compression extreme position, no longer stretches out on the contrary to realize folding compression result. In addition, a common spring can be used instead of the gas spring. Or the gas spring is replaced by an electric push rod, and the back ring seat 3 and the slip ring seat 4 are separated and tensioned through electric control. The gas spring can also be replaced by a screw rod, namely screw holes in the thread direction are respectively formed in the supports of the rear ring seat 3 and the sliding ring seat 4, the screw rod penetrates through the screw holes, and the end part of the adjusting screw rod can control the distance or the approach between the rear ring seat 3 and the sliding ring seat 4.

Meanwhile, hinge seats 8 are uniformly arranged in the front and the back of the circumferential side surface of the gearbox seat 6, and as can be seen from figure 1, each hinge seat 8 close to the front side is respectively hinged with a front swing rod 10, and each hinge seat 8 close to the back is respectively hinged with a back swing rod 11. And satisfies the following conditions: the front swing rod 10 and the rear swing rod 11 are equal in length, the tail ends of the front swing rod and the rear swing rod are respectively hinged to the inner side of the axial pulley block 9 supporting seat, and the pulley blocks (at least three groups) of the axial pulley block 9 are axially distributed and are respectively supported on the generatrix of the inner wall of the cylindrical steel tube, so that the uniform distribution and uniform stress effects are achieved. And a driving rod 12 is further hinged between the slip ring seat 4 and the middle part of the rear swing rod 11. Therefore, the motor outer frame is supported by the independent front and rear swing rods, so that the motor is positioned at the axis position in the cylindrical pipe.

The rotary polishing mechanism is positioned at the front end and comprises a rotating rod 17 in transmission connection with an output shaft of the gearbox 7, and pin shafts are respectively and vertically fixed on two sides of the front end of the rotating rod 17. The front hinge pin and the rear hinge pin are respectively hinged with a front folding rod component 15 and a rear folding rod component 16, the outermost ends of the front folding rod component 15 and the rear folding rod component 16 on each side are hinged with an outer supporting plate 13, a friction layer 19 is fixed on the outer surface of the outer supporting plate 13, tension springs 18 are arranged between the front folding rod component 15 and the rear folding rod component 16 on the two sides, and the tension springs 18 are respectively connected between the outer supporting plate 13 and a rotating rod 17. Therefore, the front folding rod assembly and the rear folding rod assembly can independently support the corresponding outer supporting plate and the friction layer on the inner wall of the cylindrical pipe.

Wherein, the front folding rod assembly 15 and the rear folding rod assembly 16 both include a plurality of rod segments hinged in sequence, and two adjacent rod segments of the front folding rod assembly 15 are hinged at the front end of the middle supporting plate 14 through a pin shaft, as shown in fig. 1, two adjacent rod segments of the rear folding rod assembly 16 at the same position are hinged at the rear end of the middle supporting plate 14 through a pin shaft.

Above each mechanism cooperation can be that this polisher expandes to any diameter of its arm length scope, no matter expandes to any degree moreover, can both ensure the bull stick and be motor shaft position that is located the cylinder steel pipe to when motor rotation work, support can the even atress at a plurality of frictional layers of cylinder pipe inner wall, polish cylinder pipe inner wall evenly, the transition is polished or the hourglass problem of polishing can not appear.

Example 2: on the basis of the embodiment 1, a self-walking driving type cylindrical steel tube inner wall grinding machine is adopted, and referring to fig. 1, a part of wheel shafts of an axial pulley block 9 is in transmission connection with a walking driving mechanism. The walking driving mechanism is characterized in that a walking motor is fixedly arranged on the motor outer frame 2, a driving belt wheel is arranged on a rotating shaft of the walking motor, a driven belt wheel is arranged on a part of wheel shafts of the axial pulley block 9, and the driving belt wheel is connected with the driven belt wheel through a transmission belt. Or, the walking mechanism is that a walking motor is fixed at the outer end of the axial pulley block 9, and a rotating shaft of the walking motor is fixedly connected or in transmission connection with the outer end of one rotating shaft.

Claims

1. The utility model provides a cylinder steel pipe inner wall polisher, includes rotary drive mechanism, radial supporting mechanism and rotatory grinding machanism, characterized by: the rotary driving mechanism comprises a motor (1), a motor outer frame (2), a gearbox seat (6) and a gearbox (7), wherein the motor (1) is fixedly sleeved in the motor outer frame (2), the gearbox seat (6) is fixed at the front end of the motor outer frame (2), the gearbox (7) is fixedly sleeved in the gearbox seat (6), a rotating shaft of the motor (1) is connected with an input shaft of the gearbox (7), a rear ring seat (3) is fixedly arranged at the rear end of the motor outer frame (2), a sliding ring seat (4) capable of axially sliding is sleeved outside the motor outer frame (2), a jacking component (5) is connected between the rear ring seat (3) and the sliding ring seat (4), hinged seats (8) are uniformly arranged in the front and the rear of the circumferential side surface of the gearbox seat (6), front swing rods (10) are respectively hinged to each hinged seat (8) close to the front side, and rear swing rods (11) are respectively hinged to each seat (8) close to the rear, the front swing rod 10 and the rear swing rod (11) are equal in length, the tail ends of the front swing rod and the rear swing rod are respectively hinged to the inner side of the supporting seat of the axial pulley block (9), and all pulley blocks of the axial pulley block (9) are axially distributed and are respectively supported on the generatrix of the inner wall of the cylindrical steel pipe; a driving rod (12) is hinged between the sliding ring seat (4) and the middle part of the rear swing rod (11); rotatory grinding machanism includes bull stick (17) of being connected with gearbox (7) output shaft transmission, the front end both sides at bull stick (17) are the vertical fixation respectively to have a round pin axle, it is preceding, back round pin axle articulates respectively has preceding book pole subassembly (15) and back book pole subassembly (16), the outermost end of the preceding book pole subassembly (15) of each side and back book pole subassembly (16) articulates in outer fagging (13), the fixed surface of this outer fagging (13) has frictional layer 19, there is extension spring (18) between preceding book pole subassembly (15) of both sides and the back book pole subassembly (16), extension spring (18) are connected respectively between outer fagging (13) and bull stick (17).

2. The machine for grinding the inner wall of the cylindrical steel tube as claimed in claim 1, wherein: the jacking component (5) is a gas spring, or an electric push rod, or a screw rod.

3. The machine for grinding the inner wall of the cylindrical steel tube as claimed in claim 1, wherein: preceding book pole subassembly (15) and back book pole subassembly (16) all include a plurality of articulated pole sections in proper order, and two adjacent pole sections of preceding book pole subassembly (15) articulate the front end at well fagging (14) through the round pin axle, and two adjacent pole sections of the back book pole subassembly (16) of same position articulate the rear end at this well fagging (14) through the round pin axle.

4. The machine for grinding the inner wall of the cylindrical steel tube as claimed in claim 1, wherein: part of wheel shafts of the axial pulley block (9) are in transmission connection with the walking driving mechanism.

5. The machine for grinding the inner wall of the cylindrical steel tube as claimed in claim 4, wherein: the walking driving mechanism is characterized in that a walking motor is fixedly arranged on the motor outer frame (2), a driving belt wheel is arranged on a rotating shaft of the walking motor, a driven belt wheel is arranged on a part of wheel shafts of the axial pulley block (9), and the driving belt wheel is connected with the driven belt wheel through a transmission belt.

6. The machine for grinding the inner wall of the cylindrical steel tube as claimed in claim 4, wherein: the walking mechanism is characterized in that a walking motor is fixed at the outer end of the axial pulley block (9), and a rotating shaft of the walking motor is fixedly or drivingly connected with the outer end of one rotating shaft.