Metal pipe fitting weld joint heat treatment device

Abstract

The utility model discloses a heat treatment device for a welding seam of a metal pipe fitting, which relates to the technical field of pipeline welding and comprises a bottom plate and a heating device arranged on the bottom plate, the heating device comprises a heating cylinder and a driving mechanism which are fixedly mounted at the top of the bottom plate, and an electric heating plate and a temperature sensor are fixedly mounted in the heating cylinder. The electric heating plate is in control connection with the temperature sensor, rotating cylinders are concentrically and rotatably installed at the two ends of the heating cylinder, and the driving mechanism is in transmission connection with one rotating cylinder and drives the rotating cylinder to rotate; and clamping mechanisms are arranged in the two rotary drums, and each clamping mechanism comprises a fixed ring fixedly arranged in the corresponding rotary drum in a sleeved mode and a movable ring arranged in the corresponding rotary drum in a sliding and sleeved mode in the axial direction. According to the heat treatment device for the weld joint of the metal pipe fitting, dynamic heating of the pipe fitting in the heating process is achieved through rotation of the rotary drum, and compared with static heating in the prior art, the heating uniformity of the pipe fitting can be remarkably improved, so that stress at the weld joint is more effectively eliminated, and the welding quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline welding technical field, concretely is a kind of metal pipe joint weld heat treatment device. BACKGROUND

[0002] Metal pipeline needs to carry out postweld heat treatment to weld after welding, it is heated to certain temperature at metal pipeline weld, and it is kept at this temperature environment for certain time, it is convenient to eliminate the stress of metal piece weld, strengthen the strength of metal piece welding, prolong its service life.

[0003] In Chinese utility model patent application No. CN201922358964.4, a pipeline welding heat treatment device is disclosed, which comprises a first housing, a second housing, a fastening member, an electric heating plate, a temperature measuring probe and a control box. The projections of the first housing and the second housing are semicircular, and the lower end surfaces are respectively provided with first and second clamping grooves. The pipeline welding heat treatment device is static heating when heat treating the pipeline, and the pipeline is not uniformly heated in the heating chamber, which cannot effectively eliminate the stress of the metal piece weld and affect the strength of the metal piece weld.

[0004] Therefore, it is necessary to provide a metal pipe joint weld heat treatment device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The technical problem solved by the utility model is to provide a metal pipe joint weld heat treatment device to solve the problem of the existing pipeline welding heat treatment device in the background art, which is static heating when heat treating the pipeline, and the pipeline is not uniformly heated in the heating chamber, which cannot effectively eliminate the stress of the metal piece weld and affect the strength of the metal piece weld.

[0006] Technical scheme: To achieve the above purpose, the utility model is implemented by the following technical scheme: a metal pipe joint weld heat treatment device, comprising a bottom plate, a heating device arranged on the bottom plate, the heating device comprising a heating cylinder fixedly installed on the top of the bottom plate and a driving mechanism, an electric heating plate and a temperature sensor fixedly installed in the heating cylinder, and the electric heating plate and the temperature sensor being control-connected, two ends of the heating cylinder being concentrically rotatably installed with rotating cylinders, and the driving mechanism being transmission-connected with one of the rotating cylinders and driving it to rotate; a clamping mechanism is arranged in each of the two rotating cylinders, the clamping mechanism comprising a fixed ring sleeved in the rotating cylinder, a moving ring sleeved in the rotating cylinder along the axial direction, and a driving assembly driving the moving ring to move along the axial direction; the fixed ring and the moving ring are arranged along the axial direction, a plurality of clamping plates are uniformly arranged along the circumference between the fixed ring and the moving ring, two connecting rods are hingedly connected on the outer side surface of each clamping plate, the two connecting rods are symmetrically arranged at the two ends of the clamping plate, and the other ends of the two connecting rods are respectively hingedly connected with the fixed ring and the moving ring.

[0007] Preferably, both ends of the heating cylinder are concentrically fixed with a fixed cylinder, and a bearing is sleeved inside the fixed cylinder. The rotating cylinder is rotatably connected to the heating cylinder through the bearing.

[0008] Preferably, the drive mechanism includes a drive motor fixedly mounted on the top of the base plate, a pulley II fixedly mounted on the output shaft of the drive motor, a pulley I fixedly mounted on one of the rotating drums, and the same transmission belt mounted on pulley I and pulley II.

[0009] Preferably, the rotating drum has a groove, and a slider is provided in the groove. The slider is bolted together with the moving ring.

[0010] Preferably, the drive assembly includes a drive box fixedly installed outside the rotating drum. A rotating shaft and a screw are rotatably mounted on the drive box. A crank is fixedly installed at one exposed end of the rotating shaft, and the other end extends into the drive box and is fixedly fitted with a bevel gear I. One exposed end of the screw is threadedly connected to a connecting plate, and the other end extends into the drive box and is fixedly fitted with a bevel gear II. The bevel gear I and the bevel gear II mesh and transmit power.

[0011] Beneficial Effects: Compared with the prior art, this utility model provides a heat treatment device for welded seams of metal pipe fittings. This device has a unique structure and is easy to use. First, the device achieves dynamic heating of the pipe fittings during the heating process through the rotation of the drum. Compared with the static heating in the prior art, it can significantly improve the heating uniformity of the pipe fittings, thereby more effectively eliminating stress at the weld and improving the welding quality. Second, the setting of the temperature sensor can monitor the temperature of the heating plate in real time and perform feedback control to ensure the accuracy of the heating temperature and avoid the problem of affecting the weld quality due to excessively high or low temperatures. At the same time, the design of the clamping mechanism can be flexibly adjusted according to the size of the pipe fittings, ensuring that the pipe fittings are stably and reliably fixed in the drum during the heating process, improving the applicability and ease of operation of the device. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional schematic diagram of the structure of this utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the fixing ring structure of this utility model;

[0015] Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure in area A;

[0016] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure in region B.

[0017] In the diagram: 1. Base plate; 2. Heating device; 21. Heating cylinder; 22. Heating plate; 23. Temperature sensor; 24. Rotating cylinder; 25. Fixed cylinder; 26. Pulley I; 27. Drive motor; 28. Pulley II; 29. ​​Transmission belt; 3. Clamping mechanism; 31. Fixed ring; 32. Moving ring; 33. Clamping plate; 34. Connecting rod; 35. Drive box; 36. Rotating shaft; 37. Handle; 38. Bevel gear I; 39. Screw; 310. Bevel gear II; 311. Connecting plate; 312. Slide groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1: This Example 1 provides a heat treatment device for welded seams of metal pipe fittings. It is a direct improvement on existing pipe welding heat treatment devices, featuring a unique structure. Please refer to [link / reference]. Figures 1-5 As shown, the device includes a base plate 1 and a heating device 2 mounted on the base plate 1. The heating device 2 includes a heating cylinder 21 fixedly mounted on the top of the base plate 1 and a driving mechanism. An electric heating plate 22 and a temperature sensor 23 are fixedly mounted inside the heating cylinder 21, and the electric heating plate 22 and the temperature sensor 23 are controlled to be connected. Rotary cylinders 24 are concentrically mounted on both ends of the heating cylinder 21. The driving mechanism is connected to one of the rotating cylinders 24 and drives it to rotate. Fixed cylinders 25 are concentrically fixedly mounted on both ends of the heating cylinder 21. Bearings are sleeved inside the fixed cylinders 25. The rotating cylinder 24 is rotatably connected to the heating cylinder 21 through the bearings. There are various ways to fix the fixed cylinders 25 and the heating cylinder 21, such as bolting the fixed cylinders 25 and the heating cylinder 21. The driving mechanism includes a drive motor 27 fixedly mounted on the top of the base plate 1. A pulley II 28 is fixedly mounted on the output shaft of the drive motor 27. A pulley I 26 is fixedly mounted on one of the rotating cylinders 24. The same transmission belt 29 is sleeved on the pulleys I 26 and II 28.

[0020] Both rotating drums 24 are equipped with clamping mechanisms 3. The clamping mechanism 3 includes a fixed ring 31 fixedly fitted inside the rotating drum 24, a movable ring 32 slidably fitted inside the rotating drum 24 along the axial direction, and a driving component that drives the movable ring 32 to move along the axial direction. The fixed ring 31 and the movable ring 32 are spaced apart along the axial direction. Multiple clamping plates 33 are evenly arranged around the fixed ring 31 and the movable ring 32. Two connecting rods 34 are hinged at intervals on the outer side of each clamping plate 33. The two connecting rods 34 are symmetrically arranged at both ends of the clamping plate 33, and the other ends of the two connecting rods 34 are respectively hinged to the fixed ring 31 and the movable ring 32.

[0021] There are several ways in which the moving ring 32 slides within the rotating drum 24. For example, the rotating drum 24 has a groove 312, and a slider is provided within the groove 312. The slider is bolted to the moving ring 32. The drive assembly includes a drive box 35 fixedly installed outside the rotating drum 24. A rotating shaft 36 and a screw 39 are rotatably mounted on the drive box 35. A rocker handle 37 is fixedly installed at one exposed end of the rotating shaft 36, and the other end extends into the drive box 35 and is fixedly fitted with a bevel gear I 38. The screw 39 is exposed. One end is threaded to the connecting plate 311, and the other end extends into the drive box 35 and is fixedly fitted with bevel gear II 310. Bevel gear I 38 and bevel gear II 310 mesh and drive each other. There are various ways to install the rotating shaft 36 and the rocker arm 37. For example, through holes are opened on the top wall and side wall of the drive box 35, and bearings are fitted in the through holes. The rotating shaft 36 and the rocker arm 37 are rotatably installed on the drive box 35 through the bearings. A threaded hole for the screw 39 to be inserted is opened in the middle of the connecting plate 311.

[0022] Working principle: When the operator uses this device to heat treat pipe fittings, first connect the device to an external power source, then insert the welded pipe fitting into the rotating drum 24, ensuring the weld seam is in the middle of the heating plate 22. At this time, rotate the crank handle 37. The crank handle 37 drives the bevel gear I 38 to rotate, and through the meshing of bevel gear I 38 and bevel gear II 310, drives the screw 39 to rotate. After the screw 39 rotates, through its threaded connection with bevel gear II 310, it drives the moving ring 32 to move closer to the fixed ring 31. When the distance between the fixed ring 31 and the moving ring 32... When the distance decreases, the connecting rod 34 pushes multiple clamping plates 33 to retract inward simultaneously, thereby clamping the pipe fitting. Then, the heating plate 22 and the drive motor 27 are activated at the same time. The heating plate 22 heats the weld seam, and the temperature sensor 23 can know the heating temperature of the heating plate 22 to keep the temperature within a suitable range. The drive motor 27 drives the rotating drum 24 to rotate through belt drive, and synchronously drives the pipe fitting to rotate, so that the pipe fitting is heated more evenly in the heating cylinder 21, which can more effectively eliminate the stress at the weld seam of the metal parts and improve the strength of the weld seam of the metal parts.

[0023] Example 2: The difference between Example 2 and Example 1 is that each rotating cylinder 24 has two sliding grooves 312, and the two sliding grooves 312 are symmetrically arranged along the axis of the rotating cylinder 24.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat treatment device for welded seams of metal pipe fittings, comprising a base plate (1), characterized in that: It also includes a heating device (2) mounted on the base plate (1). The heating device (2) includes a heating cylinder (21) fixedly mounted on the top of the base plate (1) and a driving mechanism. An electric heating plate (22) and a temperature sensor (23) are fixedly mounted inside the heating cylinder (21), and the electric heating plate (22) and the temperature sensor (23) are controlled to be connected. Rotary cylinders (24) are concentrically mounted on both ends of the heating cylinder (21). The driving mechanism is connected to one of the rotating cylinders (24) and drives it to rotate. Each of the two rotating cylinders (24) is provided with a clamping mechanism (3). The clamping mechanism (3) includes a component fixedly mounted on the rotating cylinder (24). The device includes a fixed ring (31), a movable ring (32) that slides axially within the rotating drum (24), and a drive assembly that drives the movable ring (32) to move axially. The fixed ring (31) and the movable ring (32) are spaced apart axially. Multiple clamping plates (33) are evenly arranged around the fixed ring (31) and the movable ring (32) along the circumference. Two connecting rods (34) are hinged at intervals on the outer side of each clamping plate (33). The two connecting rods (34) are symmetrically arranged at both ends of the clamping plate (33), and the other ends of the two connecting rods (34) are respectively hinged to the fixed ring (31) and the movable ring (32).

2. The heat treatment device for weld seams of metal pipe fittings according to claim 1, characterized in that: Both ends of the heating cylinder (21) are concentrically fixed with a fixed cylinder (25), and a bearing is fitted inside the fixed cylinder (25). The rotating cylinder (24) is rotatably connected to the heating cylinder (21) through the bearing.

3. The heat treatment device for weld seams of metal pipe fittings according to claim 1, characterized in that: The drive mechanism includes a drive motor (27) fixedly mounted on the top of the base plate (1). A pulley II (28) is fixedly mounted on the output shaft of the drive motor (27). A pulley I (26) is fixedly mounted on one of the drums (24). The same transmission belt (29) is mounted on pulley I (26) and pulley II (28).

4. The heat treatment device for weld seams of metal pipe fittings according to claim 1, characterized in that: The rotating drum (24) is provided with a groove (312), and a slider is provided in the groove (312). The slider is bolted to the moving ring (32).

5. The heat treatment device for weld seams of metal pipe fittings according to claim 4, characterized in that: The drive assembly includes a drive box (35) fixedly installed outside the rotating drum (24). A rotating shaft (36) and a screw (39) are rotatably installed on the drive box (35). A crank (37) is fixedly installed on one exposed end of the rotating shaft (36), and the other end extends into the drive box (35) and is fixedly fitted with a bevel gear I (38). One exposed end of the screw (39) is threadedly connected to a connecting plate (311), and the other end extends into the drive box (35) and is fixedly fitted with a bevel gear II (310). The bevel gear I (38) and the bevel gear II (310) mesh and drive each other.

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