Postweld heat treatment device for weld joint of building steel structure

Abstract

The utility model discloses a post-weld heat treatment device for building steel structure weld joints. The post-weld heat treatment device comprises a first outer shell, a connection adjusting assembly, a first electric heating wire, a moving assembly, a second outer shell and a second electric heating wire. The opening end of the second outer shell is inserted into the opening end of the first outer shell, so that the first outer shell and the second outer shell are spliced and locked through the connection adjusting assembly to form an inverted-T-shaped outer shell, and the outer shell is connected to the exterior of the welding part of the building steel structure body in a sleeving mode; the first electric heating wire is movably arranged in the first outer shell through the moving assembly, the first electric heating wire is of a U-shaped structure and wound on the lower portion of the welding portion of the building steel structure body, the second electric heating wire is arranged at the corner of the inner wall of the first outer shell, and the second electric heating wire is of a U-shaped structure and wound on the upper portion of the welding portion of the building steel structure body. The utility model relates to the technical field of building steel structure processing, and can solve the problems of high energy consumption and large use limitation of a heat treatment device in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of building steel structure processing, in particular to a post-weld heat treatment device for a building steel structure weld. Background Art

[0002] Chinese utility model patent CN217265942U discloses a post-weld heat treatment device for welds of building steel structures, comprising a frame, a frame body is provided on the upper surface of the frame, a guide mechanism is provided on the frame body, a movable connecting frame is provided on the guiding mechanism, an upper heating plate is provided at the bottom of the connecting frame, a lifting frame is also provided on the upper surface of the frame, a lower heating plate is provided on the upper surface of the lifting frame, and brackets are symmetrically provided on the upper surface of the frame, and the brackets are located on both sides of the lifting frame.

[0003] The gap between the upper and lower heating plates of the heat treatment device is large, which easily leads to heat loss, not only affecting the heat treatment effect, but also high energy consumption. At the same time, the heat treatment device is mounted on a vehicle frame, which is large in size and has great limitations when used in a small space and a small steel structure, affecting the heat treatment effect. Therefore, it is necessary to provide a post-weld heat treatment device for a weld of a building steel structure, which can solve the problems of high energy consumption and large usage limitations of the heat treatment device in the prior art. Summary of the invention

[0004] The utility model aims to provide a post-weld heat treatment device for a weld of a building steel structure, which can solve the problems of high energy consumption and great use limitations of heat treatment devices in the prior art.

[0005] The utility model is achieved in this way:

[0006] A post-weld heat treatment device for a weld of a building steel structure comprises an outer shell one, a connection adjustment component, an electric heating wire one, a moving component, an outer shell two and an electric heating wire two; the outer shell one and the outer shell two are both inverted T-shaped structures with openings on one side, the top and the bottom, the open end of the outer shell two is plugged into the open end of the outer shell one, so that the outer shell one and the outer shell two are spliced ​​and locked through the connection adjustment component to form an inverted T-shaped outer shell, and the outer shell is sleeved on the outside of the welding part of the building steel structure body; the electric heating wire one is movably arranged in the outer shell one through the moving component, the electric heating wire one is in a U-shaped structure and is wound around the lower part of the welding part of the building steel structure body, the electric heating wire two is arranged at the inner wall corner of the outer shell one, and the electric heating wire two is in a U-shaped structure and is wound around the upper part of the welding part of the building steel structure body.

[0007] The connection adjustment assembly includes a connection block 1, a threaded rod, a handle and a connection block 2; the connection block 1 is fixed on the outer wall of the outer shell 1, the connection block 2 is fixed on the outer wall of the outer shell 2, and after the outer shell 2 is plugged into the outer shell 1, the connection block 1 and the connection block 2 are arranged opposite to each other; threaded holes matching the threaded rod are formed on the connection block 1 and the connection block 2, the threaded rod passes through the threaded holes to be screwed on the connection block 1 and the connection block 2, and the handle is connected to one end of the threaded rod.

[0008] A support plate is provided inside the outer shell one, and a movable component is arranged between an inner wall of one side of the outer shell one and a side surface of the support plate. The movable component penetrates the support plate and is connected to a plurality of electric heating wires one, so that the plurality of electric heating wires one can be movably arranged between the other side surface of the support plate and the outer shell two.

[0009] The moving component includes a transmission mechanism and a slider; the transmission mechanism is arranged on an inner wall of one side of the external shell, a long strip-shaped through groove is formed on the support plate, and the slider can be slidably embedded in the through groove; the slider passes through the support plate, so that one end of the slider is connected to the transmission mechanism, and the other end of the slider is connected to a plurality of electric heating wires.

[0010] The transmission mechanism includes a motor, a connecting rod mechanism, a gear, a rack 1 and a rack 2; the motor is installed on an inner wall of one side of the external shell 1, the output shaft of the motor is rotatably connected to one end of the connecting rod mechanism, and the other end of the connecting rod mechanism is rotatably connected to the gear; the gear and rack 1 are arranged on a support plate, the rack 2 is connected to the slider, and the rack 1 and rack 2 are parallel to each other and meshingly connected at the top and bottom of the gear.

[0011] The connecting rod mechanism includes connecting rod one, connecting rod two and connecting rod three; one end of connecting rod one is rotatably connected to the output shaft of the motor, the other end of connecting rod one is rotatably connected to one end of connecting rod two, and the other end of connecting rod two is rotatably and vertically connected to one end of connecting rod three; the gear is rotatably sleeved on connecting rod three, and the other end of connecting rod three is slidably connected to the support plate.

[0012] The support plate is formed with a slide groove, which is arranged parallel to rack one and rack two; the other end of the connecting rod three is formed with a sliding block, which is slidably embedded in the slide groove, so that the connecting rod three and the gear can be movably arranged on the support plate.

[0013] A temperature meter is arranged on the inner wall of the outer shell 1, and the temperature meter is located beside the plurality of electric heating wires 1.

[0014] The upper inner wall of the outer shell 1 is provided with an insulation board, and the insulation board is located outside the building steel structure body.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with an external shell 1, a connection adjustment component and an external shell 2. The split external shell 1 and the external shell 2 can be directly sleeved onto the outside of the building steel structure body, and are connected and adjusted through the connection adjustment component to form an inverted T-shaped external shell that matches the size of the building steel structure body. The cavity gap between the external shell and the building steel structure body can be reduced, thereby reducing energy consumption and heat loss during heating, saving energy and being environmentally friendly, having better adaptability and versatility for building steel structure bodies of different specifications, and being easy to disassemble and assemble, small in size, and can be used in narrow spaces.

[0017] 2. The utility model is provided with an electric heating wire 1, a moving component and an electric heating wire 2. A plurality of electric heating wires 1 are wrapped around the lower part of the welding part of the building steel structure body, and the electric heating wires 2 are wrapped around the upper part of the welding part of the building steel structure body, so that the welding part can be heated as a whole and evenly, and the heat treatment effect after welding of the weld is improved; at the same time, the moving component drives a plurality of electric heating wires 1 to reciprocate in the two side areas of the welding part, thereby expanding the heating range and improving the heating uniformity and the heat treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the post-weld heat treatment device for the weld of a building steel structure of the utility model;

[0019] Figure 2 It is a side view of the post-weld heat treatment device for the weld of a building steel structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the post-weld heat treatment device for the weld of a building steel structure of the utility model;

[0021] Figure 4 The utility model is a structural schematic diagram of a movable component in a post-weld heat treatment device for a weld of a building steel structure.

[0022] In the figure, 1 is an outer shell 1, 2 is a support plate, 3 is a through groove, 4 is a slide groove, 5 is a motor, 6 is a connecting rod 1, 7 is a connecting rod 2, 8 is a connecting rod 3, 9 is a gear, 10 is a rack 1, 11 is a rack 2, 12 is a slider, 13 is an electric heating wire 1, 14 is a connecting block 1, 15 is a threaded rod, 16 is a handle, 17 is an outer shell 2, 18 is a connecting block 2, 19 is a temperature meter, 20 is an electric heating wire 2, 21 is a building steel structure body, and 22 is an insulation board. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please see attached Figure 1 and attached Figure 2A post-weld heat treatment device for a weld of a building steel structure comprises an external shell 1, a connection adjustment component, an electric heating wire 13, a moving component, an external shell 17 and an electric heating wire 20; the external shell 1 and the external shell 17 are both inverted T-shaped structures with one side, top and bottom openings, the open end of the external shell 17 is plugged into the open end of the external shell 1, so that the external shell 1 and the external shell 17 are spliced ​​and locked through the connection adjustment component to form an inverted T-shaped external shell, and the external shell is sleeved on the outside of the welding part of the building steel structure body 21; the electric heating wire 13 is movably arranged in the external shell 1 through the moving component, the electric heating wire 13 is in a U-shaped structure and is wound around the lower part of the welding part of the building steel structure body 21, the electric heating wire 20 is arranged at the inner wall corner of the external shell 1, and the electric heating wire 20 is in a U-shaped structure and is wound around the upper part of the welding part of the building steel structure body 21.

[0025] The vertical steel members and the horizontal steel members are welded to form an inverted T-shaped or L-shaped building steel structure body 21. When the welding parts are subjected to post-weld heat treatment, the outer shell 1 and the outer shell 2 17 adopt a split structure, which can facilitate the outer shell 1 and the outer shell 2 17 to be sleeved on the building steel structure body 21, and the outer shell is formed by an adjustably connected connection through a connecting adjustment component, which can better adapt to the size of the building steel structure body 21 and reduce the size of the cavity between the building steel structure body 21 and the outer shell, thereby reducing heat loss and energy consumption during heating.

[0026] The electric heating wire 13 can be selected according to the size adaptability of the building steel structure body 21. After the external shell 1 is installed, it is installed on the moving component in the external shell 1 and surrounds the lower part of the welding part of the building steel structure body 21 to heat the lower part of the welding part. One or more electric heating wires 13 can be set according to actual heating needs.

[0027] The opening direction of the electric heating wire 20 is consistent with the opening direction of the external shell 1, so that when the external shell 1 is installed, the electric heating wire 20 can be sleeved on the upper part of the welding part of the building steel structure body 21. The vertically arranged electric heating wire 13 and the horizontally arranged electric heating wire 20 are used to ensure effective heating of the entire welding part, thereby ensuring the post-weld heat treatment effect of the weld of the building steel structure body 21.

[0028] Please see attached Figure 1 To Attachment Figure 3The connection adjustment assembly includes a connection block 14, a threaded rod 15, a handle 16 and a connection block 2 18; the connection block 14 is fixed on the outer wall of the external shell 1, the connection block 2 18 is fixed on the outer wall of the external shell 2 17, and after the external shell 2 17 is plugged into the external shell 1, the connection block 14 and the connection block 2 18 are arranged opposite to each other; threaded holes matching the threaded rod 15 are formed on the connection block 14 and the connection block 2 18, the threaded rod 15 passes through the threaded holes and is screwed to the connection block 14 and the connection block 2 18, and the handle 16 is connected to one end of the threaded rod 15.

[0029] The threaded holes on the connecting block 14 and the connecting block 2 18 have opposite thread directions, so that when the threaded rod 15 is manually rotated by the handle 16, the rotation of the threaded rod 15 is converted into a movement of the connecting block 14 and the connecting block 2 18 moving toward or away from each other along the axial direction of the threaded rod 15 through the transmission of the thread, thereby realizing the plug-in adjustment between the external shell 1 and the external shell 2 17, so as to adapt to building steel structure bodies 21 of different sizes.

[0030] Please see attached Figure 2 To Attachment Figure 4 A support plate 2 is provided inside the external shell 1, and a movable component is arranged between an inner wall of one side of the external shell 1 and a side surface of the support plate 2. The movable component penetrates the support plate 2 and is connected to a plurality of electric heating wires 13, so that the plurality of electric heating wires 13 are movably arranged between the other side surface of the support plate 2 and the external shell 2 17.

[0031] The support plate 2 is used to separate the moving component and the electric heating wire 13 to reduce the impact of heating on the moving component. A heat insulation plate can be used on the side of the support plate 2 facing the moving component, and a heat preservation plate can be used on the other side of the support plate 2 facing the electric heating wire 13 to form a composite plate structure that takes into account both heat treatment and heat insulation functions.

[0032] Please see attached Figure 3 and attached Figure 4 The moving assembly includes a transmission mechanism and a slider 12; the transmission mechanism is arranged on an inner wall of one side of the outer shell 1, and a long through groove 3 is formed on the support plate 2, and the slider 12 can be slidably embedded in the through groove 3; the slider 12 passes through the support plate 2, so that one end of the slider 12 is connected to the transmission mechanism, and the other end of the slider 12 is connected to a plurality of electric heating wires 13.

[0033] The through groove 3 is arranged along the longitudinal direction of the horizontal steel member. When the slider 12 slides along the through groove 3, it drives the plurality of electric heating wires 13 to slide synchronously, so that the plurality of electric heating wires 13 move in the areas on both sides of the welding part of the building steel structure body 21, thereby expanding the heating range and improving the heat treatment effect. The electric heating wire 13 can be installed on the slider 12 by means of screws, etc., for easy disassembly and replacement.

[0034] Please see attached Figure 4 The transmission mechanism includes a motor 5, a connecting rod mechanism, a gear 9, a rack 10 and a rack 2 11; the motor 5 is installed on the inner wall of one side of the external shell 1, the output shaft of the motor 5 is rotatably connected to one end of the connecting rod mechanism, and the other end of the connecting rod mechanism is rotatably connected to the gear 9; the gear 9 and the rack 10 are arranged on the support plate 2, the rack 2 11 is connected to the slider 12, and the rack 10 and the rack 2 11 are parallel to each other and meshingly connected at the top and bottom of the gear 9.

[0035] Preferably, the motor 5 can adopt a small unidirectional rotating motor in the prior art, which is used to provide power for the movement of the connecting rod mechanism, so that the connecting rod mechanism drives the gear 9 to rotate and move. With the cooperation of the gear 9, rack 10 and rack 2 11, the rack 2 11 drives the slider 12 to move along the through groove 3, thereby realizing the movement of several electric heating wires 13.

[0036] Please see attached Figure 4 The connecting rod mechanism includes a connecting rod 1 6, a connecting rod 2 7 and a connecting rod 3 8; one end of the connecting rod 1 6 is rotatably connected to the output shaft of the motor 5, the other end of the connecting rod 1 6 is rotatably connected to one end of the connecting rod 2 7, and the other end of the connecting rod 2 7 is rotatably vertically connected to one end of the connecting rod 3 8; the gear 9 is rotatably sleeved on the connecting rod 3 8 through a rotating bearing, and the other end of the connecting rod 3 8 is slidably connected to the support plate 2.

[0037] Connecting rod 1 6, connecting rod 2 7 and gear 9 are all arranged in a vertical plane, connecting rod 3 8 is arranged perpendicular to connecting rod 2 7, the output shaft of motor 5 drives connecting rod 1 6 to rotate around the output shaft of motor 5, the other end of connecting rod 1 6 makes circular motion and drives one end of connecting rod 2 7 to move synchronously, and the other end of connecting rod 2 7 pushes connecting rod 3 8 to move on support plate 2; gear 9 moves synchronously with connecting rod 3 8 and meshes with rack 1 10 fixed on support plate 2, so that gear 9 rotates while moving, thereby utilizing the rotation of gear 9 to mesh with transmission rack 2 11, so that rack 2 11 moves along through groove 3.

[0038] As the motor 5 continues to rotate, the connecting rod 1 6, the connecting rod 2 7, and the connecting rod 3 8 are linked to control the meshing transmission of the gear 9, the rack 10, and the rack 2 11, so as to realize the reciprocating motion of the rack 2 11 along the through groove 3, and then realize the reciprocating motion of the plurality of electric heating wires 13 in the areas on both sides of the welding part.

[0039] Please see attached Figure 4A slide groove 4 is formed on the support plate 2, and the slide groove 4 is arranged parallel to the rack 10 and the rack 2 11; a sliding block (not shown in the figure) is formed on the other end of the connecting rod 3 8, and the sliding block is slidably embedded in the slide groove 4, so that the connecting rod 3 8 and the gear 9 can be movably arranged on the support plate 2.

[0040] The through slot 4 is used to limit the translational movement of the other end of the connecting rod three 8, while ensuring the movement stability of the connecting rod three 8 and the gear 9, and ensuring the meshing transmission of the gear 9 between the rack one 10 and the rack two 11.

[0041] Please see attached Figure 3 A temperature meter 19 is provided on the inner wall of the outer shell 1. The temperature meter 19 is located beside the plurality of electric heating wires 13 and is externally connected to a computer control device.

[0042] Preferably, the temperature meter 19 can adopt a temperature sensor of the prior art to detect the heating temperature of the plurality of electric heating wires 13 and 20 to ensure that the heating temperature can meet the heat treatment requirements.

[0043] Please see attached Figure 3 The upper inner wall of the external shell 1 is provided with an insulation board 22, and the insulation board 22 is located on the outside of the building steel structure body 21.

[0044] The material of the heat-insulating plate 22 can be adaptively selected according to the temperature requirements of the heat treatment to ensure that the heat-insulating plate 22 can withstand the heating temperature required for the heat treatment and achieve a good heat-insulating effect, further reducing heat loss.

[0045] Please see attached Figure 1 To Attachment Figure 4 , the working process and working principle of the utility model are:

[0046] The motor 5, the electric heating wire 1 13, the temperature meter 19 and the electric heating wire 2 20 are all controlled by computer control devices of the prior art through the preset programs inside them to control their opening, closing, parameter adjustment, etc., which is convenient for centralized control and convenient operation. The device of the utility model is made of heat-resistant materials such as metal as a whole, and can be made of materials with corresponding heat-resistant properties according to the specific temperature requirements of the heat treatment to ensure the normal use of the entire device and its service life.

[0047] Place the outer shell 1 and the outer shell 2 17 on both sides of the building steel structure body 21, and directly sleeve the open ends of the outer shell 1 and the outer shell 2 17 on the welding parts of the building steel structure body 21 and plug them into each other to form the outer shell, which is easy to assemble and disassemble.

[0048] The handle 16 is turned, and the rotation of the handle 16 drives the threaded rod 15 to rotate, and the threaded rod 15 drives the connection block 14 and the connection block 2 18 to move closer to each other, reducing the width of the external shell so that it can better adapt to the size of the building steel structure body 21. At the same time, the electric heating wire 13 is installed to match and surround the lower part of the welding part of the building steel structure body 21, and the electric heating wire 2 20 is installed with the external shell 1 and surrounds the upper part of the welding part of the building steel structure body 21, and the entire welding part is covered by a plurality of electric heating wires 13 and electric heating wires 20.

[0049] The motor 5, the electric heating wire 1 13, the temperature meter 19 and the electric heating wire 2 20 are started by the control device, and a plurality of the electric heating wires 1 13 and the electric heating wire 2 20 are heated to heat the welding part. The temperature meter 19 is used to detect the heating temperature of the electric heating wire 1 13 and the electric heating wire 2 20 and send the temperature data to the computer control device. When the electric heating wire 1 13 and the electric heating wire 2 20 are heated beyond the preset temperature, the computer control device can remind the construction personnel by means of alarm, etc., so as to adjust the heating temperature of the electric heating wire 1 13 and the electric heating wire 2 20, or turn off the electric heating wire 1 13 and the electric heating wire 2 20.

[0050] At the same time, the motor 5 starts to drive the connecting rod 1 6 to rotate, and the connecting rod 1 6 drives the connecting rod 2 7, the connecting rod 3 8 and the gear 9 to move, and the connecting rod 3 8 drives the gear 9 to slide horizontally in the slide groove 4. Since the support plate 2 is fixed in the external shell 1, the rack 10 is fixed on the support plate 2. With the cooperation of the rack 10, the gear 9 moves and rotates with the connecting rod 3 8. The rotation of the gear 9 drives the rack 2 11 to move along the through groove 3 through the slider 12, so that the slider 12 drives the plurality of electric heating wires 13 to move. The plurality of electric heating wires 13 reciprocate and heat within the area on both sides of the welding part, expand the heating range, improve the uniformity of heating, and thus improve the effect of post-weld heat treatment of the weld.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A post-weld heat treatment device for building steel structure welds, characterized by: The invention comprises an outer shell (1), a connection adjustment component, an electric heating wire (13), a moving component, an outer shell (17) and an electric heating wire (20); the outer shell (1) and the outer shell (17) are both inverted T-shaped structures with one side, top and bottom openings, the open end of the outer shell (17) is inserted into the open end of the outer shell (1), so that the outer shell (1) and the outer shell (17) are spliced ​​and locked through the connection adjustment component to form an inverted T-shaped outer shell, and the outer shell is sleeved on the outside of the welding part of the building steel structure body (21); the electric heating wire (13) is movably arranged in the outer shell (1) through the moving component, the electric heating wire (13) is in a U-shaped structure and is wound around the lower part of the welding part of the building steel structure body (21), the electric heating wire (20) is arranged at the inner wall corner of the outer shell (1), and the electric heating wire (20) is in a U-shaped structure and is wound around the upper part of the welding part of the building steel structure body (21).

2. The post-weld heat treatment device for building steel structure welds according to claim 1 is characterized in that: The connection adjustment assembly comprises a connection block 1 (14), a threaded rod (15), a handle (16) and a connection block 2 (18); the connection block 1 (14) is fixed on the outer wall of the outer shell 1 (1), the connection block 2 (18) is fixed on the outer wall of the outer shell 2 (17), and after the outer shell 2 (17) is plugged into the outer shell 1 (1), the connection block 1 (14) and the connection block 2 (18) are arranged opposite to each other; threaded holes matching the threaded rod (15) are formed on the connection block 1 (14) and the connection block 2 (18), the threaded rod (15) passes through the threaded holes and is screwed to the connection block 1 (14) and the connection block 2 (18), and the handle (16) is connected to one end of the threaded rod (15).

3. The post-weld heat treatment device for building steel structure welds according to claim 1 is characterized in that: The outer shell one (1) is provided with a support plate (2), and the movable component is arranged between the inner wall of one side of the outer shell one (1) and a side surface of the support plate (2). The movable component passes through the support plate (2) and is connected to a plurality of electric heating wires one (13), so that the plurality of electric heating wires one (13) can be movably arranged between the other side surface of the support plate (2) and the outer shell two (17).

4. The post-weld heat treatment device for building steel structure welds according to claim 3 is characterized in that: The moving assembly comprises a transmission mechanism and a slider (12); the transmission mechanism is arranged on an inner wall of one side of an external shell (1); a long strip-shaped through groove (3) is formed on a support plate (2), and the slider (12) can be slidably embedded in the through groove (3); the slider (12) passes through the support plate (2), so that one end of the slider (12) is connected to the transmission mechanism, and the other end of the slider (12) is connected to a plurality of electric heating wires (13).

5. The post-weld heat treatment device for building steel structure welds according to claim 4 is characterized in that: The transmission mechanism comprises a motor (5), a connecting rod mechanism, a gear (9), a rack 1 (10) and a rack 2 (11); the motor (5) is mounted on an inner wall of one side of an external housing 1 (1); the output shaft of the motor (5) is rotatably connected to one end of the connecting rod mechanism, and the other end of the connecting rod mechanism is rotatably connected to the gear (9); the gear (9) and the rack 1 (10) are arranged on a support plate (2), the rack 2 (11) is connected to a slider (12), and the rack 1 (10) and the rack 2 (11) are parallel to each other and meshingly connected at the top and bottom of the gear (9).

6. The post-weld heat treatment device for building steel structure welds according to claim 5 is characterized in that: The connecting rod mechanism comprises a connecting rod one (6), a connecting rod two (7) and a connecting rod three (8); one end of the connecting rod one (6) is rotatably connected to the output shaft of the motor (5), the other end of the connecting rod one (6) is rotatably connected to one end of the connecting rod two (7), and the other end of the connecting rod two (7) is rotatably vertically connected to one end of the connecting rod three (8); the gear (9) is rotatably sleeved on the connecting rod three (8), and the other end of the connecting rod three (8) is slidably connected to the support plate (2).

7. The post-weld heat treatment device for building steel structure welds according to claim 6 is characterized in that: The support plate (2) is formed with a slide groove (4), which is arranged parallel to rack one (10) and rack two (11); the other end of the connecting rod three (8) is formed with a sliding block, which is slidably embedded in the slide groove (4), so that the connecting rod three (8) and the gear (9) can be movably arranged on the support plate (2).

8. The post-weld heat treatment device for building steel structure welds according to any one of claims 1 to 4, characterized in that: A temperature meter (19) is provided on the inner wall of the outer shell (1), and the temperature meter (19) is located beside the plurality of electric heating wires (13).

9. The post-weld heat treatment device for building steel structure welds according to any one of claims 1 to 4, characterized in that: The upper inner wall of the outer shell (1) is provided with a heat preservation plate (22), and the heat preservation plate (22) is located outside the building steel structure body (21).

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