CN217859757U - Quick positioning device for welding pipe fittings - Google Patents

Abstract

The utility model discloses a quick positioner of welding pipe fitting, including linear module, the fixed support bottom plate that sets up on linear module, the fixed support that places the horizontal pole weldment that is provided with in top of support bottom plate, the fixed pipe fitting pay-off subassembly that is provided with in one side of linear module, pipe fitting pay-off subassembly includes the base, the fixed driving motor that sets up on the base, fixed connection is in the epaxial axis of rotation of driving motor top output shaft, the fixed cover respectively in the outside of axis of rotation is equipped with first plate rail and second plate rail, be provided with a plurality of evenly distributed's layer board on the outer disc of first plate rail, be provided with corresponding welding pipe fitting centre gripping subassembly on the outer disc of second plate rail. The utility model discloses be convenient for send in succession of welded pipe fitting, the horizontal equidistance of marching type of cooperation horizontal pole weldment removes, realizes putting and weld the fixed synchronization of welded pipe fitting and goes on, guarantees that the interval is even between the welded pipe fitting, and the bottom is located same horizontal plane, promotes work efficiency and guarantees welding quality.

Description

Quick positioning device for welding pipe fittings

Technical Field

The utility model relates to a welding frock technical field especially relates to a quick positioner of welding pipe fitting.

Background

In the products formed by welding a plurality of steel bars or round pipes, such as fences and guardrails, the steel pipes are often positioned in the welding process to ensure that the intervals of the steel pipes are uniform, and the welded steel pipes are positioned in the same plane, so that the attractiveness of welded products and the convenience in subsequent installation or use are ensured. The general steel pipe positioning mostly adopts the steps of measuring welding points on a fixing piece in advance and marking corresponding positions on the welding points, then adopting manual taking and positioning or adopting other auxiliary positioning tools, realizing prewelding in a spot welding mode, and then continuing to finish welding in a unified mode or finishing the positioning and welding of single steel pipes one by one. By adopting the mode, the efficiency is lower, and because the temperature of the welding position is overhigh, the positions of the steel pipes before and after welding can generate certain deformation, and the pose of each steel pipe after welding, cooling and shaping is not easy to guarantee. And adopt welding robot to put the efficiency higher, also can guarantee the uniformity of welded quality and steel pipe welding back design effect, but welding robot's use and maintenance cost are higher, are not suitable for general small-size or small batch's five metals welding operation demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a quick positioner of welding pipe fitting is provided, the continuous feed of the welding pipe fitting of being convenient for, the horizontal equidistance of marching type of cooperation horizontal pole weldment removes, realizes putting and welded fastening of welding pipe fitting and goes on in step, guarantees that the interval is even between the welding pipe fitting, and the bottom is located same horizontal plane, promotes work efficiency and guarantees welding quality.

In order to solve the technical problem, the utility model discloses a technical scheme be: provide for

The utility model provides a quick positioner of welded pipe spare, includes linear module, the fixed support bottom plate that sets up on linear module, the fixed support that places the horizontal pole weldment that is provided with in top of support bottom plate, the fixed pipe fitting pay-off subassembly that is provided with in one side of linear module, pipe fitting pay-off subassembly includes base, fixed driving motor, the axis of rotation of fixed connection on driving motor top output shaft end that sets up on the base, the outside of axis of rotation is fixed the cover respectively and is equipped with first plate rail and the second plate rail that is located first plate rail top, be provided with a plurality of evenly distributed's layer board on the outer disc of first plate rail, be provided with the welded pipe spare centre gripping subassembly that corresponds respectively and be located directly over the tray and vertical setting on the outer disc of second plate rail, welded pipe spare centre gripping subassembly is used for centre gripping welded pipe spare.

Furthermore, the top surface of the first tray frame is fixedly provided with a plurality of first telescopic rod groups which are uniformly distributed around the axis of the rotating shaft, each first telescopic rod group comprises a first outer loop bar and a first inner loop bar, the first outer loop bar is fixedly arranged, the first inner loop bar is sleeved in the first outer loop bar, the first inner loop bar and the first outer loop bar are locked at relative positions through a first locking screw, and the supporting plate is fixedly arranged at the end part of the first inner loop bar.

Further, the profile size of the top surface of the supporting plate is larger than that of the bottom surface of the welded pipe fitting.

Furthermore, the top surface of the second tray frame is fixedly provided with a plurality of second telescopic rod groups which are uniformly distributed around the axis of the rotating shaft, each second telescopic rod group comprises a second outer loop bar fixedly arranged and a second inner loop bar sleeved in the second outer loop bar, the second inner loop bar and the second outer loop bar realize the locking of relative positions through a second locking screw, and the welding pipe clamping assembly is fixedly arranged at the end part of the second inner loop bar.

Furthermore, the welding pipe clamping assembly comprises a fixed sleeve fixedly arranged at the end part of the second inner sleeve rod and a movable sleeve hinged at the outer side end of the fixed sleeve, the fixed sleeve is of a half hollow cylindrical structure, the movable sleeve is of a quarter hollow cylindrical structure, the movable sleeve and the fixed sleeve form a three-quarter hollow cylindrical structure, and the inner diameter of the hollow cylinder is matched with the outer diameter of the welding pipe.

Furthermore, the movable sleeve and the fixed sleeve are rotatably connected through a pin shaft, and a torsional spring is arranged at the rotating connection position.

Furthermore, the top surface of base is fixed and is provided with motor mounting bracket, driving motor fixed mounting is on motor mounting bracket's top bottom surface.

Further, a bearing seat is fixedly arranged on the top surface of the motor mounting frame, and the bottom of the rotating shaft is rotatably connected into the bearing seat through a thrust bearing.

The utility model has the advantages as follows:

1. the utility model can realize the rapid and accurate placement of two horizontal rod weldments and the step-by-step horizontal equidistant movement of the horizontal rod weldments by arranging the bracket for placing the horizontal rod weldments on the linear module; by arranging the pipe feeding assembly, the pipe feeding assembly is used for continuously placing and clamping the welding pipes to be welded, the welding pipe clamping assembly is driven to step by step to advance through the driving motor at equal rotation angles, the welding pipes clamped by the pipe feeding assembly are contacted with the cross rod weldment at the welding position one by one, the welding operation is finished by utilizing the existing welding equipment, the unnecessary labor time consumed by placing the steel pipes to be welded is effectively reduced, the welding efficiency is integrally improved, the uniformity of the intervals between the welding pipes can be ensured, and the welding quality is also ensured while the working efficiency is improved;

2. the pipe feeding assembly of the utility model is provided with a plurality of welding pipe clamping assemblies and supporting plates corresponding to the welding pipe clamping assemblies, so that the bottom ends of the welding pipes which are continuously fed step by step are positioned on the same horizontal plane, thereby ensuring that the steel pipes to be welded are uniformly distributed at equal intervals and are always positioned in the same plane in the welding process, and effectively ensuring the quality of finished products after welding and shaping;

3. the utility model adopts the welding pipe clamping component formed by hinging the fixed sleeve and the movable sleeve, so that the welding pipe placed and clamped in the clamping component is always in a vertical state, the continuous feeding can be realized by relatively accurate welding pose, the positioning precision is ensured while the working efficiency is improved, and meanwhile, in the subsequent feeding process, the welding pipe after completing the welding or pre-welding positioning can be automatically released from the welding pipe clamping component, so as to realize the recycling of the welding pipe clamping component;

4. the utility model has the advantages of simple and reasonable structure, use and maintenance cost are lower, are applicable to the five metals welding operation of small batch volume or middle batch volume, can satisfy the location demand of treating the welded steel pipe of different intervals or diameter through changing telescopic link group and welding pipe fitting centre gripping subassembly, and the commonality is better.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a perspective view of the tube feeding assembly;

FIG. 4 is a second schematic perspective view of the tube feeding assembly;

fig. 5 is one of the three-dimensional structural diagrams of the first tray frame;

fig. 6 is a second perspective view of the first tray frame;

FIG. 7 is a perspective view of the first telescoping rod assembly;

FIG. 8 is a perspective view of the second telescoping rod assembly and the welded tube gripping assembly;

fig. 9 is a schematic view of the working state of the present invention.

In the figure: 1 linear module, 2 support bottom plates, 3 supports, 4 bases, 5 driving motors, 6 rotating shafts, 7 first plate racks, 701 coamings, 702 plug-in holes, 703 splicing columns, 704 first screw holes, 8 second plate racks, 9 supporting plates, 10 welding pipe fitting clamping assemblies, 101 fixed sleeves, 102 movable sleeves, 103 pin shafts, 11 first telescopic rod groups, 111 first outer sleeve rods, 112 first inner sleeve rods, 113 first locking screws, 12 second telescopic rod groups, 121 second outer sleeve rods, 122 second inner sleeve rods, 123 second locking screws, 13 motor mounting frames, 14 bearing seats, 15 first screw groups, 16 second screw groups, 100 screw cross rod welding pieces and 200 welding pipe fittings.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

Referring to fig. 1 to 8, a device for quickly positioning a welded pipe includes a linear module 1, and a support base plate 2 fixedly disposed on the linear module 1, wherein a support 3 for placing a cross bar weldment 100 is fixedly disposed on the top of the support base plate 2. Linear module 1 adopts servo motor driven ball screw transmission pair, and support bottom plate 2 passes through bolt fixed mounting in ball screw transmission pair's power take off end, namely on the removal mesa at nut seat top to can drive support bottom plate 2 and support 3 on it and place horizontal pole weldment 100 on support 3 together step-by-step ground translation according to certain chronogenesis and certain step displacement volume according to the control program that predetermines through linear module 1, realize the continuous successive benefit of new welding position. Preferably, a plurality of inserting holes (not shown in the figure) distributed at equal intervals are formed in the top surface of the support base plate 2, the bottom end of the support 3 is perpendicularly inserted into the inserting holes, the inserting and fixing of the support 3 on the support base plate 2 are realized, the inserting distance between two adjacent supports 3 (integral multiple of the center distance of the two adjacent inserting holes) can be adjusted to meet the welding requirements (to avoid the position coincidence of the welding position and the support 3), or different supports 3 can be replaced to meet the placing requirements of the cross rod weldments 100 with different sizes and specifications or the placing requirements of the cross rod weldments 100 with different numbers (such as two shown in fig. 1) of welding.

And a pipe feeding assembly is fixedly arranged on one side of the linear module 1. As shown in fig. 3 and 4, the pipe feeding assembly includes a base 4, a driving motor 5 fixedly disposed on the base 4, and a rotating shaft 6 fixedly connected to an output shaft end of the top of the driving motor 5. There is motor mounting bracket 13 on the top surface of base 4 through bolt fixed mounting, and driving motor 5 adopts servo gear motor, and driving motor 5 upwards sets up perpendicularly and through bolt fixed mounting on motor mounting bracket 13's top bottom surface. The shaft end of the driving motor 5 penetrates through the top of the motor mounting frame 13 and is fixedly connected with the bottom end of the rotating shaft 6 through a key, so that the rotating shaft 6 can be directly driven to rotate step by step through the driving motor 5 according to a preset control program and a certain time sequence and a certain step rotating angle. The top surface of the motor mounting frame 13 is fixedly provided with a bearing seat 14, and the bottom of the rotating shaft 6 is rotatably connected in the bearing seat 14 through a thrust bearing so as to ensure that the rotating shaft 6 keeps a vertical state and improve the stability and smoothness of the rotating process of the rotating shaft 6.

The outside of axis of rotation 6 is fixed the cover respectively and is equipped with first dish frame 7 and the second plate rail 8 that is located first dish frame 7 top, is provided with a plurality of evenly distributed's layer board 9 on the outer disc of first dish frame 7, is provided with respectively on the outer disc of second plate rail 8 to correspond the welding pipe fitting centre gripping subassembly 10 that is located directly over tray 9 and vertical setting, and welding pipe fitting centre gripping subassembly 10 is used for centre gripping welding pipe fitting 200. Specifically, as shown in fig. 5 and 6, the first tray frame 7 is a circular disc structure, the center of the first tray frame is integrally or welded with a sleeving column 703, and the inner diameter of the sleeving column 703 is matched with the outer diameter of the rotating shaft 6, so that the sleeving column 703 can be sleeved on the rotating shaft 6 and can move along the axial direction of the rotating shaft 6; a plurality of first screw holes 704 are formed in the side wall of the sleeving column 703, a first screw group 15 is connected to the first screw holes 704 in an internal thread mode, the sleeving column 703 can be fixed in position on the rotating shaft 6 through the first screw group 15, and therefore position adjustment and fixing of the first disc frame 7 on the rotating shaft 6 are achieved. In order to reduce the manufacturing cost of the device, in this embodiment, the second tray 8 has the same structure as the first tray 7 and is fixedly sleeved on the rotating shaft 6 by the second screw set 16.

The top edge of the first tray frame 7 is integrally provided with an annular enclosure plate 701. The supporting plate 9 is an L-shaped sheet metal part, the vertical side wall of the supporting plate is bolted or welded or inserted and fixed on the outer circular surface of the enclosing plate 701, the supporting plate is evenly and circumferentially distributed on the outer circular surface of the enclosing plate 701 around the axis of the rotating shaft 6, and the horizontal section of the supporting plate is used for supporting the welded pipe fitting 200. In this embodiment, if the number of the pallets 9 is 12, the step rotation angle of the driving motor 5 corresponding to between two adjacent pallets 9 is 360 °/12=30 °.

As shown in fig. 8, the welded pipe clamping assembly 10 includes a fixed sleeve 101 and a movable sleeve 102 hinged to an outer end of the fixed sleeve 101, the fixed sleeve 101 is a half hollow cylinder structure, and a top portion of the fixed sleeve is fixedly disposed on an outer circumferential surface of the second plate frame 8; activity sleeve 102 is the hollow cylinder structure of quarter, activity sleeve 102 rotates with fixed sleeving 101 through round pin axle 103 to be connected, and be provided with the torsional spring in the rotation junction, make at unoperated state and centre gripping operating condition, activity sleeve 102 and fixed sleeving 101 constitute three-quarter hollow cylinder structure, and the external diameter phase-match of this hollow cylinder's internal diameter and welding pipe fitting 200, thereby can carry out the centre gripping with welding pipe fitting 200 reliably, and under the bearing cooperation of layer board 9, can make every welding pipe fitting 200 keep vertical state throughout advancing and welding process, and the bottom of every welding pipe fitting 20 is located same horizontal plane, the accuracy of welding position has been guaranteed, and then guarantee subsequent welding quality. When the second tray 8 is rotated in an incremental manner after the welding or pre-welding of the welding pipe 20 at the welding position is completed, the welding pipe clamping assembly 10 at the welding position is away from the welding pipe 20 at the welding position, so that the welding pipe 20 pushes the movable sleeve 102 to be spread outward, and the welding pipe 20 is pulled out of the welding pipe clamping assembly 10 from the opening side of the fixed sleeve 101. Obviously, the welded tubular clamping assembly 10 can be set at an oblique angle to meet the clamping and feed requirements of the welded tubular 200 in an oblique welding pose.

Preferably, the top surface of the first rack 7 is fixedly provided with a plurality of (12 in this embodiment corresponding to the number of the pallets 9) first telescopic rod groups 11 uniformly distributed around the axis of the rotating shaft 6. As shown in fig. 7, the first telescopic rod group 11 includes a first outer rod 111 fixedly disposed, and a first inner rod 112 sleeved in the first outer rod 111, the first inner rod 112 and the first outer rod 111 are locked in relative positions by a first locking screw 113, and the supporting plate 9 is fixedly disposed at an end of the first inner rod 112. Correspondingly, the top surface of the second tray frame 8 is fixedly provided with a plurality of second telescopic rod groups 12 which are uniformly distributed around the axis of the rotating shaft 6, each second telescopic rod group 12 comprises a second outer loop bar 121 which is fixedly arranged and a second inner loop bar 122 which is sleeved in the second outer loop bar 121, the second inner loop bar 122 and the second outer loop bar 121 realize the locking of the relative positions through a second locking screw 123, and the welding pipe clamping assembly 10 is fixedly arranged at the end part of the second inner loop bar 122. Therefore, as shown in fig. 5 and fig. 6, insertion holes 702 corresponding to the number of the first telescopic rod sets 11 are formed in the outer circumferential surface of the enclosing plate 701 of the first tray rack 7, and the cross-sectional profiles of the insertion holes 702 are matched with the cross-sectional profile of the first outer sleeve 111, so that the first telescopic rod set 11 can be quickly positioned on the first tray rack 7, and then welded and fixed, so as to improve the assembly manufacturing production efficiency of the apparatus itself. The second set of telescopic bars 12 is arranged on the second dish rack 8 in exactly the same way as the first set of telescopic bars 11 is arranged on the first dish rack 7.

The first inner loop bar 112 is fixed in the first outer loop bar 111 by loosening the first locking screw 113, adjusting the position of the first inner loop bar 112 in the first outer loop bar 111, thereby adjusting the axial distance between the supporting plate 9 and the rotating shaft 6, and tightening the first locking screw 113. The second locking screw 123 is loosened, the position of the second inner loop bar 122 in the second outer loop bar 121 can be adjusted, so that the axial distance between the welding pipe clamping assembly 10 and the rotating shaft 6 is adjusted, and the second locking screw 123 is screwed, so that the second inner loop bar 122 can be fixed in the second outer loop bar 121. By synchronously adjusting the axial distance between the welding tube clamping assembly 10 and the carrier 9 and the rotating shaft 6, the feed position of the welding tube 200 can be adjusted, ensuring that it can reliably contact the side of the cross bar weldment 100 in the welding position. Meanwhile, as the first disk rack 7 is fastened on the rotating shaft 6 through the first screw group 15 and the second disk rack 8 is fastened on the rotating shaft 6 through the second screw group 16, the first screw group 15 is unscrewed to realize the fixing position of the first disk rack 7 in the vertical direction of the rotating shaft 6, and then the first screw group 15 is screwed, so that the setting of the bottom end position of the welded pipe fitting 100 is realized; similarly, the fixing position of the second tray 8 on the rotating shaft 6 can be adjusted, so that the vertical distance between the first tray 7 and the second tray 8 can be adjusted, and one section of the top end and one section of the bottom end of the welded pipe 10 can be respectively exposed outside the welded pipe clamping assembly 10 and respectively correspond to the positions of the two welding cross rods 100 on the support 3.

Further preferably, the top surface contour dimension of layer board 9 is greater than the bottom surface contour dimension of welding pipe fitting 200, can effectively guarantee that the bottom surface of welding pipe fitting 200 fully contacts with the surface of layer board 9 to promote the welding pipe fitting 200 and transfering and the stability of erectting of welding in-process, also be favorable to guaranteeing welding position's accuracy nature. Meanwhile, in order to ensure that the device does not have the problem that the welding operation is performed when the welding pipe fitting 200 is not in the welding position, a photoelectric sensor (not shown in the figure) is fixedly mounted on the top surface of the base 4 and is positioned on one side of the welding position of the welding pipe fitting 200 and the cross bar weldment 100 and used for detecting whether the welding pipe fitting 200 is in the welding position or not, if the welding pipe fitting 200 is in the welding position, the welding operation is started, and if not, the welding operation is not started until the next welding pipe fitting 200 reaches the welding position.

As shown in fig. 9, in practical use, at least one welding device needs to be used in cooperation, an operator can firstly put a to-be-welded pipe 200 into 6 welding pipe clamping assemblies 10 on the right side in the drawing, erect a to-be-welded cross-bar weldment 100 on a support 3, manually rotate the welding pipe clamping assemblies 10 to a position closest to the cross-bar weldment 100, and at a position b shown in the drawing, the welding pipe 200 and the cross-bar weldment 100 can be located at an optimal welding position by synchronously adjusting the overall lengths of a first telescopic rod group 11 and a second telescopic rod group 12, and then the starting device is started after the initial welding position of the cross-bar weldment 100 is properly adjusted. After the welding pipe fitting 200 reaches the welding position, the welding equipment performs welding operation on the welding pipe fitting 200 and the cross bar weldment 100 at the welding position, and after the welding is completed, the linear module 1 works to drive the support 3 and the cross bar weldment 100 to horizontally move by a unit welding distance, such as the direction indicated by a straight line dotted line arrow in the figure; during the horizontal movement of the cross bar weldment 100, the drive motor 5 drives the rotary shaft 6 to rotate one unit of step rotation (30 ° in this embodiment) in a direction opposite to the direction of the opening of the welded pipe gripping assembly 10, as indicated by the curved dashed arrow in the figure. In this process, the welded pipe 200 is released from the welded pipe clamping assembly 10, new welded pipes 200 to be welded and new welding points on the cross bar 100 reach the welding positions, and the welding operation is continued, and the operator can continuously insert the welded pipes 200 into the empty welded pipe clamping assembly 10 during the welding process until the whole welding operation is completed.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a quick positioner of welded pipe fitting, includes linear module (1), fixed support bottom plate (2) that set up on linear module (1), the fixed support (3) of placing horizontal pole weldment (100) that are provided with in top of support bottom plate (2), its characterized in that: the fixed pipe fitting pay-off subassembly that is provided with in one side of linear module (1), pipe fitting pay-off subassembly includes base (4), fixed driving motor (5), the rotation axis (6) of fixed connection on driving motor (5) top output shaft end that set up on base (4), the outside of rotation axis (6) is fixed the cover respectively and is equipped with first dish frame (7) and second dish frame (8) that are located first dish frame (7) top, be provided with a plurality of evenly distributed's layer board (9) on the outer disc of first dish frame (7), be provided with respectively on the outer disc of second dish frame (8) and correspond welding pipe fitting centre gripping subassembly (10) that are located directly over layer board (9) and vertical setting, welding pipe fitting centre gripping subassembly (10) are used for centre gripping welding pipe fitting (200).

2. The device for rapidly positioning the welded pipe fittings as claimed in claim 1, wherein: the fixed first telescopic link group (11) that is provided with a plurality of axis evenly distributed around axis of rotation (6) of top surface of first dish frame (7), first telescopic link group (11) are including fixed first outer loop bar (111) that sets up, overlap first interior loop bar (112) of locating in first outer loop bar (111), the locking of relative position is realized through first locking screw (113) in first interior loop bar (112) and first outer loop bar (111), layer board (9) are fixed to be set up in the tip of first interior loop bar (112).

3. A device for the rapid positioning of welded pipes according to claim 1 or 2, characterized in that: the profile size of the top surface of the supporting plate (9) is larger than that of the bottom surface of the welding pipe fitting (200).

4. The device for rapidly positioning the welded pipe fittings as claimed in claim 1, wherein: the top surface of the second tray frame (8) is fixedly provided with a plurality of second telescopic rod groups (12) which are uniformly distributed around the axis of the rotating shaft (6), each second telescopic rod group (12) comprises a second outer loop bar (121) which is fixedly arranged and a second inner loop bar (122) which is sleeved in the second outer loop bar (121), the second inner loop bar (122) and the second outer loop bar (121) realize the locking of the relative positions through a second locking screw (123), and the welding pipe clamping assembly (10) is fixedly arranged at the end part of the second inner loop bar (122).

5. A device for rapidly positioning welded pipe fittings according to claim 1 or 4, wherein: the welding pipe clamping assembly (10) comprises a fixed sleeve (101) fixedly arranged at the end part of the second inner loop bar (122) and a movable sleeve (102) hinged to the outer side end of the fixed sleeve (101), the fixed sleeve (101) is of a half hollow cylindrical structure, the movable sleeve (102) is of a quarter hollow cylindrical structure, the movable sleeve (102) and the fixed sleeve (101) form a three-quarter hollow cylindrical structure, and the inner diameter of the hollow cylinder is matched with the outer diameter of the welding pipe (200).

6. The device of claim 5, wherein: the movable sleeve (102) is rotatably connected with the fixed sleeve (101) through a pin shaft (103), and a torsional spring is arranged at the rotary connection position.

7. The device of claim 1 for rapidly positioning welded pipe fittings, wherein: the top surface of base (4) is fixed and is provided with motor mounting bracket (13), driving motor (5) fixed mounting is on the top bottom surface of motor mounting bracket (13).

8. The device of claim 7 for rapidly positioning welded pipe fittings, wherein: the top surface of the motor mounting frame (13) is fixedly provided with a bearing seat (14), and the bottom of the rotating shaft (6) is rotatably connected into the bearing seat (14) through a thrust bearing.

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