A threading machine auxiliary threading support device

Abstract

A threading machine auxiliary threading support device includes an adjustment unit and a drive unit. The adjustment unit includes a track frame (3), a supporting thread sleeve (4), a first threaded rod (15), and a first crank handle (7). The first threaded rod (15) rotates when the first crank handle (7) is manually cranked. The drive unit includes a second crank handle (8), a second threaded rod (9), a rotating threaded sleeve (10), a universal joint (18), a splined bushing (19), and a splined rod (20). One set of second threaded rods (9) rotates when the second crank handle (8) is manually cranked. The universal joint (18) and the splined bushing (19) are slidably connected to the splined rod (20), allowing them to maintain sliding and rotating characteristics. This threading machine auxiliary threading support device significantly improves the support stability during pipe threading, offers flexible adaptability, and can be adapted to pipes of different diameters.

Description

Technical Field

[0001] This utility model relates to a threading machine, specifically, an auxiliary threading support device for a threading machine. Background Technology

[0002] Threading machines are electrically driven to quickly process pipe threads. They are mainly used for pipe threading in pipeline installation, significantly reducing the labor intensity of workers and improving efficiency. They are widely used in industries such as construction, petrochemicals, shipbuilding, and automobile manufacturing, and play a key role, especially in pipeline installation and maintenance. During the use of threading machines, large-size and long pipes are often threaded. Due to the sudden increase in the overall length and weight of the pipe, the clamping force of the threading machine itself is often insufficient to overcome the swaying gravity during the pipe threading process. Therefore, it is usually necessary to equip an auxiliary support device at the end away from the threading to ensure horizontal processing during pipe threading.

[0003] Chinese patent CN220372623U discloses an automatic pipe cutting and threading device for fire protection, which uses a combination of an intermediate support seat and a rolling support wheel to complete the support work during the pipe threading process; Chinese patent CN212329922U discloses an auxiliary threading support device for a threading machine, which completes the support work during the pipe threading process through the bottom support of a rotating ring and the side support of a fixed plate.

[0004] However, existing auxiliary support devices for pipe threading machines can only provide limiting support at the bottom of the pipe, without synchronous limiting support at the top. This can cause the pipe to wobble due to rotational force during threading, resulting in poor threading accuracy. The latter type of auxiliary support device can only be used for a limited number of steel pipe models, and its performance is relatively simple, failing to meet the needs of various pipe specifications in actual production.

[0005] Therefore, the known auxiliary support devices for threading machines have the aforementioned inconveniences and problems. Utility Model Content

[0006] The purpose of this invention is to provide a safe and reliable auxiliary threading support device for threading machines.

[0007] To achieve the above objectives, the technical solution of this utility model is: An auxiliary threading support device for a threading machine, comprising an adjustment unit and a drive unit, characterized in that: The adjustment unit includes a track frame, a support threaded sleeve, a first lead screw, and a first crank handle. By manually cranking the first crank handle, the first lead screw is rotated, converting the rotational force into a counter-thrust force, which generates a driving force to move the two sets of support threaded sleeves in opposite directions. This, in turn, drives the first support wheel and the second support wheel to move in opposite directions, pre-adjusting the distance between the two support wheels to adapt to the auxiliary support during the threading process of pipes of different sizes. The top of the support base supports the first support wheel, and the bottom of the support base is connected to the support threaded sleeve by bolts. The drive unit includes a second crank, a second lead screw, a rotating lead sleeve, a universal joint, a splined bushing, and a splined rod. By manually cranking the second crank, one set of second lead screws is rotated. The torque transmission through the universal joint, splined bushing, and splined rod transfers the rotational force to the other set of second lead screws, converting the rotational force into a moving force. This generates a driving force that moves the rotating lead sleeve, allowing it to rotate along the first swing arm while simultaneously causing the first swing arm to swing relative to the support arm. The universal joint enables the second lead screws to perform rotational driving... The dynamic characteristics allow it to swing synchronously with the swing of the first swing arm. Furthermore, by setting the rotating threaded sleeve, the rotating threaded sleeve can rotate synchronously with the swing of the second screw, so as to maintain coaxial transmission with the second screw. After the bottom of the pipe is supported by two pairs of first support wheels, the swing of the first swing arm relative to the support arm drives the second swing arm to swing synchronously, so that the two pairs of second support wheels swing in opposite directions and press tightly against the upper end of the pipe. In a multi-point support state, the pipe is limited and supported in the circumferential direction to improve the stability of the pipe threading rotation process. The splined bushing and splined rod are slidably connected, ensuring that they maintain sliding and rotational characteristics during support wheel spacing adjustment. This serves as a central drive shaft, synchronously driving two sets of second lead screws. The track frame contains a slide rail with a guide table along its direction to guide the displacement of the support sleeve. A lifting adjustment unit is located below the track frame, comprising a rotating base and a support platform. A threaded sleeve is located at the upper center of the rotating base, and a screw is located at the lower center of the support platform. The threaded sleeve connects to the screw, allowing the rotating base to rise and fall along a knob on the support platform. A clearance groove is provided along the edge of the support platform, and the rotating base has a corresponding clearance groove. The overlapping telescopic sleeves form a telescopic cover structure, which isolates and protects the screw sleeve from the screw rod. A groove is provided on the rotating base, and a raised edge is provided on the bottom of the telescopic sleeve that slides in connection with the groove. When the knob of the rotating base is turned, it rotates relative to the telescopic sleeve, avoiding the influence of relative friction between the telescopic sleeve and the relief groove, and reducing the resistance of the knob. The fixed seat is provided on the support seat to provide rotational support for the splined sleeve. When the support seat drives the two sets of support wheels to move relative to each other, the splined sleeve moves synchronously along the spline rod axis. A spline groove is formed inside the splined sleeve to provide the space required for the splined sleeve to move relative to the spline rod, so that the splined sleeve and the spline rod maintain coaxial rotation in a sliding state.

[0008] The auxiliary threading support device for the threading machine of this utility model can also be further realized by the following technical measures.

[0009] In the aforementioned threading machine auxiliary threading support device, the teeth of the first threading rod are arranged in positive and negative directions with the center line as the boundary.

[0010] In the aforementioned threading machine auxiliary threading support device, the teeth of the two sets of second screws are arranged in opposite directions to generate driving forces in opposite directions.

[0011] After adopting the above technical solution, the auxiliary threading support device for threading machines of this utility model has the following advantages: 1. Significantly improves the support stability during pipe threading; 2. Flexible adaptability, suitable for pipes of different diameters. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the auxiliary threading support device for the threading machine according to the present invention; Figure 2 This is a supporting plan view of the present invention; Figure 3 This is a schematic diagram of the adjustment unit in this utility model; Figure 4 This is a schematic diagram of the assembly of the drive unit in this utility model; Figure 5 This is an assembly plan view of the drive unit in this utility model; Figure 6 This is an exploded view of the drive unit in this utility model; Figure 7 This is a schematic diagram of the lifting and adjusting mechanism of this utility model; Figure 8 This is a cross-sectional view of the lifting adjustment of this utility model.

[0013] In the diagram: 1 Rotating base, 2 Support platform, 3 Rail frame, 4 Support sleeve, 5 Support seat, 6 First support wheel, 7 First crank handle, 8 Second crank handle, 9 Second lead screw, 10 Rotating sleeve, 11 First swing arm, 12 Support arm, 13 Second swing arm, 14 Second support wheel, 15 First lead screw, 16 Slide rail, 17 Slide table, 18 Universal joint, 19 Spline bushing, 20 Spline rod, 21 Fixed seat, 22 Spline groove, 23 Telescopic sleeve, 24 Relief groove, 25 Protruding edge, 26 Groove, 27 Threaded sleeve, 28 Threaded rod. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0015] Example 1 The present invention relates to an auxiliary threading support device for a threading machine, comprising an adjustment unit and a drive unit.

[0016] Please see now Figures 1-8 The adjustment unit includes a track frame 3, a support thread sleeve 4, a first threaded rod 15, and a first crank 7. By manually cranking the first crank 7, the first threaded rod 15 is driven to rotate (the threads of the first threaded rod 15 are arranged in positive and negative directions with the center line as the boundary). The first threaded rod 15 converts the rotational force into a counter-propulsion force, which generates a driving force to drive the two sets of support thread sleeves 4 to move in opposite directions. This, in turn, drives the first support wheel 6 and the second support wheel 14 to move in opposite directions, and pre-adjusts the distance between the support wheels to adapt to the auxiliary support during the threading process of pipes of different sizes. The drive unit comprises a second crank 8, a second lead screw 9, a rotating threaded sleeve 10, a universal joint 18, a splined bushing 19, and a splined rod 20. By manually cranking the second crank 8, one set of second lead screws 9 is rotated. The rotational force is then transmitted to the other set of second lead screws 9 using the torque transmission of the universal joint 18, the splined bushing 19, and the splined rod 20 (the threads of the two sets of second lead screws 9 are arranged in opposite directions to generate driving forces in opposite directions). This converts the rotational force into a moving force, which drives the rotating threaded sleeve 10 to move. This allows the rotating threaded sleeve 10 to rotate along the first swing arm 11 while simultaneously driving the first swing arm 11 relative to the support arm 12. The swing (through the universal joint 18, the second lead screw 9 has a rotation drive characteristic, so that it swings synchronously with the swing of the first swing arm 11, and through the setting of the rotating sleeve 10, the rotating sleeve 10 can rotate synchronously with the swing of the second lead screw 9, so as to maintain coaxial transmission with the second lead screw 9), after the bottom of the pipe is supported by two pairs of first support wheels 6, the swing of the first swing arm 11 relative to the support arm 12 drives the second swing arm 13 to swing synchronously, so that the two pairs of second support wheels 14 swing in opposite directions and press tightly against the upper end of the pipe, in a multi-point support state, to limit the support of the pipe circumferential direction, so as to improve the stability of the pipe threading rotation process; The splined bushing 19 and splined rod 20 are slidably connected, ensuring that the splined bushing 19 and splined rod 20 maintain sliding and rotational characteristics during support wheel spacing adjustment. This serves as a central drive shaft, driving the two sets of second lead screws 9 synchronously in real time. The track frame 3 contains a slide rail 16, with a slide table 17 along the guide rail direction to guide the displacement of the support lead screw 4. A lifting adjustment unit is located below the track frame 3, comprising a rotating base 1 and a support platform 2. A screw sleeve 27 is located at the upper center of the rotating base 1, and a screw 28 is located at the lower center of the support platform 2. The screw sleeve 27 connects to the screw 28, allowing the rotating base 1 to rise and fall along a knob on the support platform 2. A clearance groove 24 is provided along the edge of the support platform 2, and a telescopic sleeve 23 overlapping the clearance groove 24 is provided on the rotating base 1, forming a telescopic cover structure that isolates and protects the screw sleeve 27 from the screw 28. A groove is also provided on the rotating base 1. 26. A protruding edge 25 is provided at the bottom of the telescopic sleeve 23, which is slidably connected to the groove 26. When the knob of the rotating base 1 is turned, it rotates relative to the telescopic sleeve 23, avoiding the influence of relative friction between the telescopic sleeve 23 and the relief groove 24, and reducing the resistance of the knob. The fixed seat 21 is provided on the support seat 5 to provide rotational support for the spline bushing 19. When the support seat 5 drives the two sets of support wheels to move relative to each other, the spline bushing 19 moves synchronously along the axial direction of the spline rod 20. A spline groove 22 is formed inside the spline bushing 19 to provide the space required for the spline bushing 19 to move relative to the spline rod 20, so that the spline bushing 19 and the spline rod 20 maintain coaxial rotation in a sliding state.

[0017] The method of using the auxiliary threading support device for threading machines of this utility model includes the following steps: 1. Depending on the pipe diameter, manually crank the first handle 7 to generate a driving force that drives the two pairs of first support wheels 6 and the two sets of second support wheels 14 to move in opposite directions, and pre-adjust the distance between the support wheels so that the two pairs of first support wheels 6 can support the pipe. 2. While using the first support wheel 6 to support the bottom of the pipe, the rotating base 1 can be rotated relative to the support platform 2 by turning a knob based on the threaded connection characteristics of the screw sleeve 27 and the screw 28. By adjusting the distance between the rotating base 1 and the support platform 2, the support height of the first support wheel 6 can be adjusted and aligned to fit the bottom support of the pipe. 3. After using the first support wheel 6 to support the bottom of the pipe, the second crank 8 is manually cranked to generate a driving force that drives the two pairs of second support wheels 14 to swing in opposite directions. This force is applied to the upper end of the pipe in a counter-pressing manner, providing multi-point auxiliary support for the pipe in a circumferential ring support manner, thereby improving the horizontal stability of the pipe during the threading process.

[0018] 4. After the pipe threading is completed, simply open the second support wheel 14 to remove the pipe and complete the pipe threading.

[0019] This utility model possesses substantial features and significant technological advancements. Compared to traditional equipment, the auxiliary threading support device for threading machines of this utility model employs a multi-point positioning method with support wheels to provide circumferential fixed-point support along the pipe's circumference. This not only greatly improves the support stability during pipe threading and prevents rotational skew during pipe rotation threading, but also has adjustable adaptability, accommodating auxiliary support work for pipes of different diameters, thus improving the device's flexibility and saving processing costs. The above embodiments are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should also fall within the scope of this utility model and should be defined by the claims.

Claims

1. An auxiliary threading support device for a threading machine, comprising an adjustment unit and a drive unit, characterized in that: The adjustment unit includes a track frame (3), a support thread sleeve (4), a first thread rod (15), and a first crank (7). By manually cranking the first crank (7), the first thread rod (15) is driven to rotate. The first thread rod (15) converts the rotational force into a counter-thrust force, generating a driving force to drive the two sets of support thread sleeves (4) to move in opposite directions. This drives the first support wheel (6) and the second support wheel (14) to move in opposite directions, pre-adjusting the distance between the two support wheels to adapt to the auxiliary support during the threading process of pipes of different sizes. The support seat (5) supports the first support wheel (6) at the top and is connected to the support thread sleeve (4) at the bottom by bolts. The drive unit includes a second crank (8), a second lead screw (9), a rotating lead sleeve (10), a universal joint (18), a splined bushing (19), and a splined rod (20). By manually cranking the second crank (8), one set of second lead screws (9) is driven to rotate. The rotational force is transmitted to the other set of second lead screws (9) through the torque transmission of the universal joint (18), the splined bushing (19), and the splined rod (20), converting the rotational force into a moving force. This generates a driving force that drives the rotating lead sleeve (10) to move, allowing the rotating lead sleeve (10) to rotate along the first swing arm (11) while simultaneously driving the first swing arm (11) to swing relative to the support arm (12). This is achieved through the universal joint (18). The second lead screw (9) is configured to have a rotation drive characteristic so that it can move synchronously with the swing of the first swing arm (11). The rotating sleeve (10) is configured to rotate synchronously with the swing of the second lead screw (9) so as to maintain coaxial transmission with the second lead screw (9). After the bottom of the pipe is supported by the two pairs of first support wheels (6), the swing of the first swing arm (11) relative to the support arm (12) drives the second swing arm (13) to swing synchronously, so that the two pairs of second support wheels (14) swing in opposite directions and press tightly against the upper end of the pipe. In a multi-point support state, the pipe is limited and supported in the circumferential direction to improve the stability of the pipe threading rotation process. Among them: the spline bushing (19) and the spline rod (20) are slidably connected, so that when the support wheel spacing is adjusted, the spline bushing (19) and the spline rod (20) can always maintain sliding and rotation characteristics, and serve as a transfer drive shaft to drive the two sets of second screws (9) to operate synchronously in real time; the track frame (3) is provided with a slide rail (16), and the slide rail (16) is provided with a slide table (17) along the guide rail direction to provide displacement guidance for the support screw (4); the track frame (3) is provided with a lifting adjustment unit below, which includes a rotating base (1) and a support platform (2). The upper middle part of the rotating base (1) is provided with a screw sleeve (27), and the lower middle part of the support platform (2) is provided with a screw rod (28). The screw sleeve (27) is connected to the screw rod (28) to provide the rotating base (1) to lift along the knob of the support platform (2). A relief groove (24) is provided on the edge of the support platform (2), and the rotating base (1) is provided with a groove (24) that overlaps with the relief groove (24). The telescopic sleeve (23) forms a telescopic cover structure, which isolates and protects the screw sleeve (27) and the screw (28). A groove (26) is provided on the rotating base (1), and a protruding edge (25) is provided at the bottom of the telescopic sleeve (23) that is slidably connected to the groove (26). When the rotating base (1) is turned, it rotates relative to the telescopic sleeve (23), avoiding the influence of relative friction between the telescopic sleeve (23) and the relief groove (24), and reducing the resistance of the knob. The fixed seat (21) is provided on the support seat (5) to provide rotational support for the spline bushing (19). When the support seat (5) drives the two sets of support wheels to move relative to each other, the spline bushing (19) moves synchronously along the axial direction of the spline rod (20). A spline groove (22) is formed inside the spline bushing (19) to provide the space required for the spline bushing (19) to move relative to the spline rod (20), so that the spline bushing (19) and the spline rod (20) maintain coaxial rotation in a sliding state.

2. The threading machine auxiliary threading support device as described in claim 1, characterized in that, The threads of the first lead screw (15) are arranged in positive and negative directions with the center line as the boundary.

3. The auxiliary threading support device of claim 1, wherein, The threads of the two sets of second lead screws (9) are arranged in opposite directions to generate driving forces in opposite directions.

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