Device for repairing threads of underground workpiece in coal mine production

Abstract

The utility model discloses a device for repairing a thread of a workpiece used underground in coal mine production, which comprises a repairing sleeve, a sliding column and a limiting rod, the trend of the limiting rod is vertical to the sliding column, one end of the limiting rod is fixedly connected with the side wall of the sliding column, and the other end of the limiting rod penetrates through a sliding groove and extends out of the repairing sleeve. The sliding column is used for preventing the sliding column from rotating relative to the repairing sleeve or being separated from the repairing sleeve; wherein the sliding column is used for moving leftwards along with the deepening of the drilling depth and extending out of the repairing sleeve when a workpiece is driven by a vertical rotating bed or a lathe to rotate along the axis of the sliding column to drill a hole in the workpiece by the screw tap, so that the situation that the screw tap rotates and cannot drill the hole is avoided; the preparation time before tapping of the workpiece to be repaired is simplified, the maintenance time is shortened, the efficiency is improved, the device is matched with the rotating workpiece to be repaired, the sliding column can be automatically driven to retract and stretch out relative to the repairing sleeve and move left and right, tapping work is completed, the operation risk can be reduced, and the maintenance progress can be promoted.

Description

Technical Field

[0001] The utility model belongs to the field of coal mine production, in particular to a device for repairing threads of workpieces used underground in coal mine production. Background Art

[0002] Mechanical equipment fasteners refer to parts used to connect and fix various parts of mechanical equipment, usually including bolts, nuts, washers, pins, etc. They play a vital role in mechanical equipment and ensure the structural stability and safety of the equipment. Among them, nuts and bolts account for a large proportion.

[0003] Many workpieces used underground have threads, and due to the harsh underground environment, the threads of the workpieces are easily corroded. Therefore, it is necessary to regularly repair the threads of the underground workpieces. Due to the large number of nuts used and the large amount of maintenance underground, the repair strength of the inner hole threads of the workpieces is low and the workload is large. Due to the low efficiency of traditional operations, the inner hole threads need to be manually repaired using taps, which affects the progress of maintenance. Utility Model Content

[0004] The utility model aims to provide a device for repairing the threads of workpieces used underground in coal mine production, so as to solve the problem that the repair of the workpieces used underground is slow and needs manual repair.

[0005] The utility model adopts the following technical scheme: a device for repairing the threads of workpieces used underground in coal mine production, comprising:

[0006] A repair sleeve, a side of which is provided with a slide groove along its direction, a right end of which is detachably mounted on a feed mechanism of a vertical rotary bed or a lathe, and a left end of which is arranged close to a workpiece fixed on the vertical rotary bed or the lathe;

[0007] A sliding column, the sliding column is sleeved in the inner cavity of the repair sleeve, and its left end is exposed to the outside, the left end of the sliding column is provided with a top hole for installing a tap from left to right, and the left end of the sliding column is provided with a plurality of locking holes from top to bottom or from bottom to top, and the plurality of locking holes are arranged radially along the axis of the sliding column; each locking hole is connected with the top hole and is used to install a bolt for locking the tap;

[0008] A limit rod, which is arranged perpendicular to the sliding column, has one end fixedly connected to the side wall of the sliding column, and the other end passes through the sliding groove and extends out of the repair sleeve, and is used to prevent the sliding column from rotating relative to the repair sleeve or prevent the sliding column from falling out of the repair sleeve;

[0009] Among them, the slide column is used to move to the left as the depth of the drilling deepens when the workpiece rotates along the axis of the slide column driven by a vertical turning machine or lathe so that the tap drills a hole in the workpiece, and extends out of the repair sleeve to prevent the tap from rotating and causing failure to drill.

[0010] Furthermore, the diameter of the sliding post is a, the inner diameter of the repair sleeve is b, the length of the limiting rod is c, and the wall thickness of the repair sleeve is d; and a (b - a) + d.

[0011] Furthermore, the limiting rod is a threaded rod and is threadedly connected to the sliding post.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The present utility model simplifies the preparation time before the taper threading of the workpiece to be repaired, shortens the maintenance time, improves the work efficiency, and can automatically drive the sliding post to retract and extend relative to the repair sleeve and move left and right in cooperation with the rotating workpiece to be repaired, so as to complete the taper threading work. It can not only reduce the operation risk but also promote the maintenance progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the top view of the present utility model;

[0016] Figure 3 is the left view of the present utility model.

[0017] Wherein: 10, repair sleeve; 11, sliding groove; 20, sliding post; 21, top hole; 22, locking hole; 23, positioning cone; 30, limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. The "direction" in the present utility model is described based on the Figure 1 direction when the present utility model is in the

[0020] The utility model discloses a device for repairing the threads of workpieces used underground in coal mine production, as Figure 1-3 shown, which includes a repair sleeve 10, a sliding column 20, and a limiting rod 30.

[0021] A chute 11 is贯穿ly opened along the trend on the side surface of the repair sleeve 10. The right end of the repair sleeve 10 is detachably installed on the feeding mechanism of a vertical lathe or a lathe. The left end of the repair sleeve 10 is arranged close to the workpiece fixed on the vertical lathe or the lathe.

[0022] The sliding column 20 is sleeved in the inner cavity of the repair sleeve 10, and its left end protrudes outside. A top hole 21 for installing a tap is opened from left to right at the left end of the sliding column 20. A plurality of locking holes 22 are provided on the left end of the sliding column 20 from top to bottom or from bottom to top. The plurality of locking holes 22 are radially arranged along the axis of the sliding column 20; each locking hole 22 communicates with the top hole 21 and is used for installing bolts for locking the tap.

[0023] The trend of the limiting rod 30 is perpendicular to that of the sliding column 20. One end of the limiting rod 30 is fixedly connected to the side wall of the sliding column 20. The other end of the limiting rod 30 passes through the chute 11 and extends out of the repair sleeve 10, and is used to prevent the sliding column 20 from rotating relative to the repair sleeve 10 or from disengaging from the repair sleeve 10. The limiting rod 30 is a threaded rod and is threadedly connected to the sliding column 20.

[0024] Wherein, when the workpiece rotates along the axis of the sliding column 20 driven by the vertical lathe or the lathe so that the tap drills the workpiece, the sliding column 20 moves leftward as the drilling depth increases and extends out of the repair sleeve 10, avoiding the rotation of the tap resulting in the inability to drill.

[0025] The diameter of the sliding column 20 is a, the inner diameter of the repair sleeve 10 is b, the length of the limiting rod 30 is c, and the wall thickness of the repair sleeve 10 is d; and a b - a + d. This can ensure that the limiting rod 30 can extend out of the chute 11, thereby preventing the sliding column 20 from rotating relative to the repair sleeve 10 or from disengaging from the repair sleeve 10.

[0026] The workpiece to be repaired is mounted on the chuck of a vertical turning machine or lathe. The utility model is mounted on the feed mechanism of the machine tool on one side of the workpiece, and the utility model can only move left and right but cannot rotate. Then the selected tap is inserted into the top hole 21 on the slide column 20. After adjusting the tap to be coaxial with the workpiece to be repaired, the locking hole 22 is a threaded hole adapted to M10, and two of them are provided. Two M10 bolts are respectively screwed into the locking holes 22, and the tap is locked by the M10 bolts. Finally, the feeding mechanism of the machine tool is used to drive the utility model to approach the workpiece to be repaired, and the tap is driven into 2 to 3 threads of the workpiece to be repaired. Then, the machine tool chuck drives the workpiece to be repaired to rotate clockwise. Under the action of the guide rod 30, the slide column 20 cannot rotate relative to the repair sleeve 10, so that the tap cannot rotate. Because the tap is in contact with the workpiece to be repaired, the tap will continue to penetrate into the workpiece to be repaired to complete the repair of the inner hole thread. The repair sleeve 10 is fixed on the feeding mechanism of the machine tool and does not move. The slide column 20 moves synchronously with the tap relative to the repair sleeve 10. When the repair is completed, the machine tool chuck drives the repaired workpiece to rotate counterclockwise, thereby driving the tap to exit the repaired workpiece.

[0027] refer to Figure 1 , 3 As shown in , the guide rod 30 penetrates the slide groove 11 in the vertical direction, thus ensuring that the slide column 20 will not rotate relative to the repair sleeve 10, ensuring that the slide column 20 can only move left and right in the repair sleeve 10, but cannot rotate, so as to ensure that the tap moves left and right to complete the drilling work; the repair sleeve 10 is a steel pipe with an inner diameter of 36 cm, an outer diameter of 42 cm, and a length of 184 cm. The inner diameter of the slide column 20 is 32 cm and the length is 215 cm.

[0028] refer to Figure 2 As shown in the figure, the aperture of the top hole 21 is 15 cm, which can be adapted to install taps with a diameter of 5 to 12 cm. Therefore, taps of more sizes can be replaced to repair workpieces with more apertures. Among them, the two locking holes 22 are respectively connected to the top hole 21 to ensure that the tap can be locked in the top hole 21. Because there is a positioning cone 23 at the center of the inner bottom surface of the top hole 21, it is matched with the positioning hole on the bottom surface of the tap, so that the positioning cone 23 can be coaxial with the center of the workpiece to be repaired, which can reduce the operation risk and the occurrence of defective parts. For more workpieces to be repaired with the same aperture, compared with traditional operations, not only the tapping time can be simplified, but also the preparation work before tapping can be simplified.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for repairing the threads of workpieces used underground in coal mine production, characterized in that: Comprising: A repair sleeve (10), a chute (11) is贯穿ly opened along the side of the repair sleeve (10) along its direction, its right end is detachably installed on the feed mechanism of a vertical lathe or a lathe, and its left end is arranged close to the workpiece fixed on the vertical lathe or the lathe; A slide post (20), the slide post (20) is sleeved in the inner cavity of the repair sleeve (10) and its left end is exposed, a top hole (21) for installing a tap is opened at the left end of the slide post (20) from left to right, and a plurality of locking holes (22) are arranged at the left end of the slide post (20) from top to bottom or from bottom to top, and the plurality of locking holes (22) are arranged radially along the axis of the slide post (20); each of the locking holes (22) communicates with the top hole (21) and is used for installing a bolt for locking the tap; A limiting rod (30), its direction is perpendicular to that of the slide post (20), one end of it is fixedly connected to the side wall of the slide post (20), and the other end passes through the chute (11) and extends out of the repair sleeve (10), and is used to prevent the slide post (20) from rotating relative to the repair sleeve (10) or prevent the slide post (20) from disengaging from the repair sleeve (10); Wherein, the slide post (20) is used for moving leftward and extending out of the repair sleeve (10) as the depth of the drilling increases when the workpiece rotates along the axis of the slide post (20) driven by a vertical lathe or a lathe so that the tap drills the workpiece, avoiding the tap from rotating and resulting in unable to drill.

2. A device for repairing threads of workpieces used underground in coal mine production according to claim 1, characterized in that: The diameter of the slide post (20) is a, the inner diameter of the repair sleeve (10) is b, the length of the limiting rod (30) is c, and the wall thickness of the repair sleeve (10) is d; and a (b - a) + d.

3. The device for repairing the threads of workpieces used underground in coal mine production according to claim 1 is characterized in that: The limiting rod (30) is a threaded rod and is threadedly connected to the slide post (20).

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