A welding tool for a milling head pick seat

Abstract

The present invention relates to the technical field of shaft boring machine manufacturing, and specifically to a welding tool for a pick seat of a milling head, comprising a drum and a pick seat, a rotating frame fixedly mounted on the outer ring surface of the drum, a dial bolted to the upper surface of an end cover, a ruler fixedly connected to one end of the rotating frame, a plurality of ruler holes provided on the ruler surface, a pointer fixedly mounted on one side of the rotating frame, an adjustment device non-permanently fixedly connected to the ruler surface, and the position positioning of the pick seat in the vertical direction, horizontal direction, circumferential angle, and posture angle is completed by means of the plurality of ruler holes and the adjustment device, thereby simplifying the measurement work before welding the pick seat, reducing the possibility of welding errors, ensuring that the pick forms a curve distribution that conforms to the design size after being assembled to the drum surface, and ensuring its welding accuracy while improving the welding efficiency of the pick seat.

Description

Technical Field

[0001] The invention relates to the technical field of shaft boring machine manufacturing, and in particular to a welding tool for a pick seat of a milling head. Background Art

[0002] The milling head of the shaft boring machine uses its own rotational motion to facilitate the regularly distributed cutting teeth installed on the barrel wall to continuously cut the mining face in front of the milling head, ultimately achieving the purpose of continuous excavation.

[0003] The pick tip trajectory forms the final cutting path of the milling head, and its distribution follows a specific curvilinear pattern. This requires accurate and uniform placement of the tooth tips, and the pick mounting axis must be positioned at an appropriate angle to ensure efficient excavation. All pick mounting dimensional requirements correspond to the weld dimensional requirements for the pick holder on the milling head.

[0004] However, the milling heads in the prior art often require a large number of pick seats to be welded, resulting in a large number of positioning dimensions, which complicates the measurement process for the workers and reduces the efficiency of the pick seat welding work.

[0005] In view of this, in order to overcome the above technical problems, the present invention designs and develops a welding tool for a milling head pick seat to solve the above technical problems. Summary of the Invention

[0006] In order to make up for the shortcomings of the existing technology, the present invention proposes a welding tool for the pick seat of a milling head, which solves the technical problem that the milling head in the existing technology often requires a large number of pick seats to be welded, resulting in a large number of positioning dimensions, which makes the operation and measurement process of the staff complicated and reduces the efficiency of the pick seat welding work.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a welding fixture for a pick holder of a milling head, comprising a roller and a pick holder, and further comprising: a fixing plate non-permanently fixedly connected to both ends of the roller, a base fixedly mounted on the lower surface of the fixing plate located at the bottom end of the roller, and a core shaft fixedly mounted on the upper surface of the fixing plate located at the top end of the roller; the base and the core shaft are both located at the center of the fixing plate; and bearings are sleeved on the upper and lower ends of the core shaft;

[0008] The bearing located below the core shaft has its lower surface fixedly connected to the upper surface of the fixed plate near the top of the roller, and a cylinder is fixedly installed on the upper surface; the inner ring of the cylinder is rotatably connected to the surface of the core shaft, and the outer ring surface is fixedly installed with a rotating frame;

[0009] The bearing located above the core shaft has its lower surface fixedly connected to the end of the cylinder away from the fixed plate, and an end cover fixedly installed on its upper surface; the end cover is fixedly connected to the core shaft, and a dial is bolted to its upper surface;

[0010] A ruler is fixedly connected to one end of the rotating frame, and a plurality of ruler holes are opened on the surface of the ruler; a pointer is fixedly installed on one side of the rotating frame;

[0011] An adjusting device is non-permanently fixedly connected to the surface of the scale, and the adjusting device is used to adjust and position the welding posture angle of the pick seat.

[0012] Preferably, the adjustment device includes: a connecting plate, a butterfly bolt, a first butterfly nut, a sleeve, a rotating shaft, a pin, a gear seat shaft, a round head bolt, an angle plate, a limit plate, and a second butterfly nut;

[0013] A through hole is provided on the surface of the connecting plate; the free end of the butterfly bolt passes through the through hole and the scale hole in sequence; the first butterfly nut is threadedly connected to the free end of the butterfly bolt; the sleeve is fixedly mounted on one end of the connecting plate and a plurality of angle holes are provided on the surface; the rotating shaft is rotatably mounted inside the sleeve and a plurality of positioning holes are provided on the surface; the pin is located inside the angle hole and the positioning hole; one side of the gear seat shaft is rotatably connected to the side of the rotating shaft away from the connecting plate through a round head bolt; a limiting hole is provided on the other side of the gear seat shaft; the angle plate is located on one side of the gear seat shaft and is rotatably connected to the round head bolt; the end of the angle plate away from the round head bolt is fixedly mounted with a limiting plate; the second butterfly nut is threadedly connected to the free end of the round head bolt;

[0014] The end of the pick seat with the tooth tip is placed inside the limiting hole.

[0015] Preferably, one end of the rotating frame away from the scale is fixedly connected to a tooth tip scale.

[0016] In summary, the present invention has the following beneficial effects:

[0017] First, the vertical, horizontal, circumferential and attitude angle positioning of the pick seat are completed through multiple scale holes and adjustment devices, which simplifies the measurement work before welding the pick seat, reduces the possibility of welding errors, and ensures that the pick forms a curve distribution that meets the design dimensions after being assembled to the drum surface. While improving the welding efficiency of the pick seat, it also ensures its welding accuracy.

[0018] Secondly, the pick holder is driven to rotate on the drum surface by the rotating shaft, and angle holes at different positions can be used to form a variety of specific angles, ensuring that multiple pick holders on the edge of the drum surface are welded at special posture angles.

[0019] Thirdly, a tooth tip ruler is fixedly connected to one end of the rotating frame away from the scale, so that the circumferential distance of the tooth tips of multiple pick seats can be checked to see if they are qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of the pick holder of the present invention after installation;

[0022] Figure 2 This is a front view of the pick holder of the present invention when installed;

[0023] Figure 3 This is a rear view of the pick holder of the present invention when installed;

[0024] Figure 4 is a top view of the present invention;

[0025] Figure 5 It is a schematic diagram of the rotating structure of the top of the present invention;

[0026] Figure 6 is a perspective view of the adjusting device of the present invention installed with a pick holder;

[0027] Figure 7 It is a three-dimensional diagram of the adjusting device of the present invention without the pick holder installed;

[0028] Figure 8 This is a schematic diagram of the welding of the pick holder of the present invention.

[0029] In the figure: drum 1, pick holder 2, fixed plate 11, base 12, core shaft 13, bearing 14, cylinder 15, rotating frame 16, end cover 17, dial 18, ruler 19, ruler hole 20, pointer 21, connecting plate 31, butterfly bolt 32, first butterfly nut 33, sleeve 34, rotating shaft 35, pin 36, gear seat shaft 37, round head bolt 38, angle plate 39, limit plate 40, second butterfly nut 41, through hole 42, angle hole 43, positioning hole 44, limit hole 45, tooth tip ruler 5. Implementation Method

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back" indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. Such terms are used solely to facilitate the description of the present invention and to simplify the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0033] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] like Figure 1-8As shown, it includes a roller 1 and a pick holder 2, with fixed plates 11 non-permanently fixedly connected at both ends of the roller 1 (non-permanent fixed connection can be achieved by gluing), a base 12 is fixedly installed on the lower surface of the fixed plate 11 at the bottom end of the roller 1, and a core shaft 13 is fixedly installed on the upper surface of the fixed plate 11 at the top end of the roller 1; the base 12 and the core shaft 13 are both located at the center of the fixed plate 11; bearings 14 are sleeved on the upper and lower ends of the core shaft 13; the bearing 14 located below the core shaft 13 has its lower surface fixedly connected to the upper surface of the fixed plate 11 near the top end of the roller 1 and a cylinder 15 is fixedly installed on the upper surface; the cylinder 15 The inner ring is rotatably connected to the surface of the core shaft 13 and a rotating frame 16 is fixedly installed on the surface of the outer ring; the bearing 14 located above the core shaft 13 has its lower surface fixedly connected to the end of the cylinder 15 away from the fixed plate 11 and an end cover 17 is fixedly installed on the upper surface; the end cover 17 is fixedly connected to the core shaft 13 and a dial 18 is bolted to the upper surface; a scale 19 is fixedly connected to one end of the rotating frame 16, and a plurality of scale holes 20 are provided on the surface of the scale 19; a pointer 21 is fixedly installed on one side of the rotating frame 16; an adjustment device is non-permanently fixedly connected to the surface of the scale 19, and the adjustment device is used to adjust and position the welding posture angle of the pick seat 2.

[0035] The adjusting device includes: a connecting plate 31, a butterfly bolt 32, a first butterfly nut 33, a sleeve 34, a rotating shaft 35, a pin 36, a gear seat shaft 37, a round head bolt 38, an angle plate 39, a limit plate 40, and a second butterfly nut 41; a through hole 42 is opened on the surface of the connecting plate 31; the free end of the butterfly bolt 32 passes through the through hole 42 and the scale hole 20 in sequence; the first butterfly nut 33 is threadedly connected to the free end of the butterfly bolt 32; the sleeve 34 is fixedly mounted on one end of the connecting plate 31 and has a plurality of angle holes 43 opened on the surface; the rotating shaft 35 is rotatably mounted in the sleeve 34 The top of the gear seat 37 is provided with a plurality of positioning holes 44 on its surface; the pin 36 is located inside the angle hole 43 and the positioning hole 44; one side of the gear seat shaft 37 is rotatably connected to the side of the rotating shaft 35 away from the connecting plate 31 through a round head bolt 38; a limiting hole 45 is provided on the other side of the gear seat shaft 37; the angle plate 39 is located on one side of the gear seat shaft 37 and is rotatably connected to the round head bolt 38; the end of the angle plate 39 away from the round head bolt 38 is fixedly mounted with a limiting plate 40; the second butterfly nut 41 is threadedly connected to the free end of the round head bolt 38; the end of the pick holder 2 with the tooth tip is placed inside the limiting hole 45.

[0036] In embodiment 1, before welding the pick seat 2, loosen the second butterfly nut 41 in the reverse direction so that the angle plate 39 can rotate on the surface of the round head bolt 38, and then the angle plate 39 can be rotated 90° clockwise relative to the tooth seat shaft 37, so that the end of the pick seat 2 with the tooth tip can be placed inside the limiting hole 45; then rotate the angle plate 39 90° counterclockwise relative to the tooth seat shaft 37 (the angle between the angle plate 39 and the tail end of the pick seat 2 is 90°), so that the limiting plate 40 moves to the tail end of the pick seat 2, and the limiting plate 40 at the tail end can exert a thrust on the pick seat 2 toward the tooth seat shaft 37; finally, tighten the second butterfly nut 41 in the forward direction so that the angle plate 39 and the limiting plate 40 are fixed, and then the end of the pick seat 2 with the tooth tip can be constrained inside the limiting hole 45, so that the pick seat 2 can be non-permanently fixed to one end of the tooth seat shaft 37.

[0037] After completing the installation of the pick seat 2, a plurality of scale holes 20 are opened in the vertical direction on the surface of the scale 19, and a through hole 42 is opened on the surface of the connecting plate 31; at this time, according to the height at which the pick seat 2 needs to be welded to the surface of the drum 1, the free end of the butterfly bolt 32 is first passed through the through hole 42 and the scale hole 20 at the corresponding height position (that is, the height at which the pick seat 2 needs to be welded) in turn, and then the first butterfly nut 33 is threadedly connected to the free end of the butterfly bolt 32, so that the adjustment device is non-permanently fixed to the surface of the scale 19, completing the vertical position positioning of the pick seat 2 to be welded.

[0038] The vertical positioning of the above-mentioned pick seat 2 is that the surface of the drum 1 is in a vertical shape; if the surface of the drum 1 is set in an arc shape, the multiple scale holes 20 are opened on the surface of the scale 19 in an arc direction, and the curvature of the arc is the same as the curvature of the surface of the drum 1, so that the horizontal distances between the multiple scale holes 20 and the surface of the drum 1 are the same, completing the horizontal positioning of the pick seat 2 to be welded.

[0039] After completing the vertical and horizontal positioning of the pick holder 2, the rotating frame 16 is rotated so that the rotating frame 16 drives the pick holder 2 to rotate circumferentially relative to the drum 1; since the end cover 17 is fixedly connected to the core shaft 13 and the upper surface is bolted with a dial 18 (that is, the dial 18 is fixed), a pointer 21 is fixedly installed on one side of the rotating frame 16 (that is, the pointer 21 rotates with the rotating frame 16), and then the pointer 21 can be rotated around the dial 18 by the angle (such as Figure 4 As shown), the rotation angle of the pick holder 2 is determined, and the position positioning of the pick holder 2 in the circumferential angle direction to be welded is completed.

[0040] After completing the circumferential angular position positioning of the pick seat 2, the pick seat 2 will form an angle relative to the surface of the drum 1 (that is, the welding point of the pick seat 2 may not be in contact with the surface of the drum 1); at this time, loosen the second butterfly nut 41 in the reverse direction so that the tooth seat shaft 37 can drive the pick seat 2 to rotate in the X-axis direction (that is, the pick seat 2 rotates toward the nut direction of the butterfly bolt 32 or the first butterfly nut 33). When the pick seat 2 rotates in the X-axis direction until the welding point contacts the surface of the drum 1, tighten the second butterfly nut 41 in the forward direction to complete the welding posture angle positioning of the pick seat 2 to be welded.

[0041] After the vertical, horizontal, circumferential and posture angles of the pick seat 2 are positioned, the pick seat 2 is welded, thereby simplifying the measurement work before welding the pick seat 2, reducing the possibility of welding errors, and ensuring that the pick is assembled to the surface of the drum 1 to form a curve distribution that meets the design dimensions. While improving the welding efficiency of the pick seat 2, it also ensures its welding accuracy.

[0042] The second embodiment is different from the first embodiment in that the pick holder 2 on the edge of the drum 1 needs to be welded at a special angle; Figure 1-3 As shown; at this time, first pull out the pin 36 from the angle hole 43 and the positioning hole 44, so that the rotating shaft 35 can rotate inside the sleeve 34, and the rotating shaft 35 will drive the pick seat 2 to rotate on the surface of the drum 1. When the pick seat 2 rotates to the required special posture angle, insert the pin 36 into the angle hole 43 and the positioning hole 44, so that the rotating shaft 35 is fixed inside the sleeve 34; then loosen the second butterfly nut 41 in the reverse direction, so that the tooth seat shaft 37 can drive the pick seat 2 to rotate in the X-axis direction (that is, the pick seat 2 rotates toward the nut direction of the butterfly bolt 32 or the first butterfly nut 33). When the pick seat 2 rotates in the X-axis direction until the welding point contacts the surface of the drum 1, tighten the second butterfly nut 41 in the forward direction to complete the positioning of the special posture angle of the pick seat 2 to be welded.

[0043] In the third embodiment, a tooth tip ruler 5 is fixedly connected to one end of the rotating frame 16 away from the scale 19, so that the circumferential distance of the tooth tips of multiple pick holders 2 can be checked to see if it is qualified. The specific steps are: rotate the tooth tip ruler 5 to the surface of the pick holder 2 that needs to be checked, and observe the distance between the tooth tip of the pick holder 2 and the edge of the tooth tip ruler 5; if the distance is within 2 mm, it indicates that the circumferential distance of the tooth tip is qualified. Then measure the center line from the tooth tip to the tooth tip ruler 5, and compare it with the dimension table in the prior art to check whether the axial distance of the tooth tip of the pick holder 2 is qualified. In addition, the tooth tip ruler 5 and the scale 19 are mirror images, which can act as a counterweight, making the circumferential rotation movement of the entire rotating frame 16 more stable.

[0044] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A welding tool for a pick holder of a milling head, comprising a roller (1) and a pick holder (2), characterized in that: Also includes: Both ends of the roller (1) are non-permanently fixed with fixed plates (11); a base (12) is fixedly mounted on the lower surface of the fixed plate (11) at the bottom end of the roller (1); a core shaft (13) is fixedly mounted on the upper surface of the fixed plate (11) at the top end of the roller (1); the base (12) and the core shaft (13) are both located at the center of the fixed plate (11); and bearings (14) are sleeved on the upper and lower ends of the core shaft (13); The bearing (14) is located below the core shaft (13), and its lower surface is fixedly connected to the upper surface of the fixed plate (11) near the top of the roller (1), and a cylinder (15) is fixedly installed on the upper surface; the inner ring of the cylinder (15) is rotatably connected to the surface of the core shaft (13), and a rotating frame (16) is fixedly installed on the outer ring surface; The bearing (14) is located above the core shaft (13), and its lower surface is fixedly connected to the end of the cylinder (15) away from the fixed plate (11), and an end cover (17) is fixedly installed on the upper surface; the end cover (17) is fixedly connected to the core shaft (13), and a dial (18) is bolted to the upper surface; One end of the rotating frame (16) is fixedly connected to a ruler (19), and a plurality of ruler holes (20) are opened on the surface of the ruler (19); a pointer (21) is fixedly installed on one side of the rotating frame (16); An adjustment device is non-permanently fixedly connected to the surface of the scale (19), and the adjustment device is used to adjust and position the welding posture angle of the pick seat (2); The adjusting device comprises: a connecting plate (31), a butterfly bolt (32), a first butterfly nut (33), a shaft sleeve (34), a rotating shaft (35), a pin (36), a gear seat shaft (37), a round head bolt (38), an angle plate (39), a limiting plate (40), and a second butterfly nut (41); The surface of the connecting plate (31) is provided with a through hole (42); the free end of the butterfly bolt (32) passes through the through hole (42) and the hole of the ruler (19) in sequence; the first butterfly nut (33) is threadedly connected to the free end of the butterfly bolt (32); the shaft sleeve (34) is fixedly mounted on one end of the connecting plate (31) and has a plurality of angle holes (43) on its surface; the rotating shaft (35) is rotatably mounted inside the shaft sleeve (34) and has a plurality of positioning holes (44) on its surface; the pin (36) is located between the angle hole (43) and the positioning hole (44). The gear seat shaft (37) is rotatably connected to the side of the rotating shaft (35) away from the connecting plate (31) through a round head bolt (38) on one side; a limiting hole (45) is provided on the other side of the gear seat shaft (37); the angle plate (39) is located on one side of the gear seat shaft (37) and is rotatably connected to the round head bolt (38); the limiting plate (40) is fixedly mounted on one end of the angle plate (39) away from the round head bolt (38); the second butterfly nut (41) is threadedly connected to the free end of the round head bolt (38); The end of the pick seat (2) with the tooth tip is placed inside the limiting hole (45).

2. A welding tool for a milling head pick holder according to claim 1, characterized in that: One end of the rotating frame (16) away from the scale (19) is fixedly connected to a tooth tip scale (5).

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