Pipe penetrating auxiliary device for heat exchanger

Abstract

The utility model provides a pipe penetrating auxiliary device for a heat exchanger, relates to the technical field of air conditioner manufacturing, and solves the technical problem of low production efficiency caused by the fact that tool tables of various sizes need to be manufactured during pipe penetrating of the heat exchanger in the prior art. The pipe penetrating auxiliary device for the heat exchanger comprises a distance adjusting structure and at least two supporting seats, and the distance adjusting structure is connected with part of or all the supporting seats and can adjust the distance between every two adjacent supporting seats. The pipe penetrating auxiliary device for the heat exchanger can reduce occupied placing space, improve production efficiency and reduce production cost and labor waste.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning manufacturing technology, and in particular to an auxiliary device for heat exchanger tube insertion. Background Technology

[0002] As a core component of home appliances such as air conditioners, dehumidifiers, portable air conditioners, and window air conditioners, heat exchangers require manual assembly on tooling tables after the fins are produced by a punch press and the U-tubes by a long U-tube machine. The dimensions of heat exchangers vary significantly across different models, and the height of the personnel performing the assembly also varies considerably, making universal assembly impossible. Therefore, multiple sizes of tooling tables need to be manufactured according to different models.

[0003] However, the production of various sizes of tooling tables when installing heat exchanger tubes results in a large number of tooling tables, which occupy a lot of placement space; and during use, they need to be repeatedly moved, resulting in low production efficiency and waste of production costs and labor. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary device for heat exchanger tube insertion, so as to solve the technical problem of low production efficiency caused by the need to manufacture tooling tables of various sizes when inserting heat exchanger tubes in the prior art. The various technical effects of the preferred technical solutions provided by this utility model are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The heat exchanger tube insertion auxiliary device provided by this utility model includes a spacing adjustment structure and at least two support seats. The spacing adjustment structure is connected to some or all of the support seats and can adjust the spacing between two adjacent support seats.

[0007] Furthermore, at least two of the support seats are arranged side by side, and the spacing adjustment structure is connected to the at least two support seats. The spacing adjustment structure is used to drive the at least two support seats to move closer to or further away from each other, so as to adjust the spacing between the at least two support seats.

[0008] Furthermore, the spacing adjustment structure includes a left fixed frame, a right fixed frame, and at least one set of scissor assemblies. The at least one set of scissor assemblies is connected between the left fixed frame and the right fixed frame. At least one support seat is disposed on the at least one set of scissor assemblies. The at least one set of scissor assemblies drives at least two support seats to move synchronously closer to or further away from each other.

[0009] Furthermore, at least one set of the scissor lift components is disposed between the left fixed frame and the right fixed frame, and a sliding groove is provided on both the left fixed frame and the right fixed frame. The two ends of the at least one set of the scissor lift components are slidably disposed in the sliding groove, driving the left fixed frame and the right fixed frame to move closer to each other or further away from each other, thereby adjusting the distance between at least two of the support seats.

[0010] Furthermore, at least one set of the scissor lift components has its top ends rotatably mounted on the left fixed frame and the right fixed frame, respectively, and each of the left fixed frame and the right fixed frame is provided with a sliding groove. The bottom ends of at least one set of the scissor lift components are slidably mounted in the sliding groove, driving the left fixed frame and the right fixed frame to move closer to each other or further away from each other, thereby adjusting the distance between at least two of the support seats.

[0011] Furthermore, each set of the scissor lift assembly includes two sets of scissor lift structures and several connecting rods, with the two sets of scissor lift structures arranged opposite to each other, and the support base disposed between the two sets of the scissor lift structures;

[0012] The scissor lift structure includes a first support arm and a second support arm arranged in an X-shape, with the first support arm and the second support arm hinged at the middle, and a plurality of connecting rods connected between the first support arm and the second support arm.

[0013] Furthermore, when the scissor lift assembly is provided in at least two sets, the top end of the first support arm and the top end of the second support arm are rotatably connected between two adjacent sets of the scissor lift structure, and the bottom end of the second support arm and the bottom end of the first support arm are rotatably connected.

[0014] Furthermore, it also includes a sliding shaft, and both the left fixed frame and the right fixed frame are provided with sliding sleeves. The sliding sleeves cooperate with the sliding shaft so that the left fixed frame and the right fixed frame can slide closer to each other or further away from each other along the sliding shaft.

[0015] Furthermore, it also includes a height adjustment component, wherein the left fixed frame or the right fixed frame is connected to the height adjustment component, and the height adjustment component is disposed on the side away from the sliding axis.

[0016] Furthermore, the height adjustment assembly includes a lifting motor, a ball screw, a screw slider, and a lifting plate. The lifting motor is connected to the ball screw, the screw slider cooperates with the ball screw, the first end of the lifting plate is connected to the screw slider, and the second end of the lifting plate is connected to one of the left fixed frame or the right fixed frame.

[0017] Furthermore, the sliding shaft is provided in two sets, and both ends of the left fixed frame and the right fixed frame are slidably disposed on the two sets of sliding shafts.

[0018] Furthermore, the sliding sleeve is also provided with a locking element.

[0019] Furthermore, the spacing adjustment structure includes an adjustment guide rail and at least two adjustment sliders. At least two of the support seats are connected to the adjustment sliders, and the adjustment sliders are slidably disposed on the adjustment guide rail, so that at least two support seats are slidably disposed on the adjustment guide rail via the adjustment sliders. The beneficial effects of this utility model are: the heat exchanger tube-threading auxiliary device provided by this utility model includes a spacing adjustment structure and at least two support seats. The spacing adjustment structure is connected to some or all of the support seats, and can adjust the spacing between two adjacent support seats. This allows the area of ​​the platform formed by the at least two support seats to be adjusted as needed, satisfying the tube-threading requirements of various heat exchanger models, reducing the number of heat exchanger tube-threading auxiliary devices, thereby reducing the space occupied, improving production efficiency, and reducing production costs and labor waste. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view (a) of the present invention;

[0022] Figure 2 This is a perspective view (II) of the present invention;

[0023] Figure 3 This is a partial three-dimensional view (a) of the structure of this utility model;

[0024] Figure 4 This is a partial three-dimensional view (II) of the structure of this utility model;

[0025] Figure 5 This is a partial front view of the structure of this utility model.

[0026] In the picture:

[0027] 100. Support frame; 200. Spacing adjustment structure; 300. Support base; 400. Height adjustment assembly;

[0028] 210. Left fixed frame; 220. Right fixed frame; 230. Scissor lift assembly; 240. Sliding groove; 250. Scissor lift structure; 260. Connecting rod;

[0029] 251. First support arm; 252. Second support arm;

[0030] 310, Sliding shaft; 320, Sliding sleeve; 410, Lifting motor; 420, Ball screw; 430, Screw slider; 440, Lifting plate. Detailed Implementation

[0031] Please refer to the attached diagram below. Figures 1-5 This document explains the content of this utility model and its differences from existing technologies. The technical solutions (including preferred solutions) of this utility model are further described in detail below through accompanying drawings and examples of optional embodiments. It should be noted that any technical feature or solution in this embodiment is one or more of a variety of optional technical features or solutions. For the sake of brevity, this document cannot exhaustively list all alternative technical features and solutions of this utility model, nor is it convenient to emphasize that each implementation of a technical feature is one of multiple optional implementations. Therefore, those skilled in the art should understand that any technical means provided by this utility model can be replaced, or any two or more technical means or features provided by this utility model can be combined to obtain a new technical solution. No technical feature or solution in this embodiment limits the scope of protection of this utility model. The scope of protection of this utility model should include any alternative technical solutions that can be conceived by those skilled in the art without creative effort, as well as new technical solutions obtained by combining any two or more technical means or features provided by this utility model.

[0032] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] This utility model provides a heat exchanger tube-insertion auxiliary device that can reduce the space occupied, improve production efficiency, reduce production costs and labor waste.

[0035] The following is combined Figures 1-5 The technical solution provided by this utility model will be described in more detail.

[0036] This utility model provides a heat exchanger tube insertion auxiliary device, including a spacing adjustment structure 200 and at least two support seats 300. The at least two support seats 300 are arranged side by side. The spacing adjustment structure 200 is connected to the at least two support seats 300. The spacing adjustment structure 200 is used to drive the at least two support seats 300 to move closer to or further away from each other, so as to adjust the spacing between the at least two support seats 300.

[0037] The heat exchanger tube-threading auxiliary device provided by this utility model includes a spacing adjustment structure 200 and at least two support seats 300. The at least two support seats 300 are arranged side by side. The spacing adjustment structure 200 is used to drive the at least two support seats 300 to move closer to or further away from each other to adjust the spacing between the at least two support seats 300. This allows the area of ​​the platform formed by the at least two support seats 300 to be adjusted as needed, which can meet the tube-threading needs of various heat exchanger models, reduce the number of heat exchanger tube-threading auxiliary devices, thereby reducing the space occupied, improving production efficiency, reducing production costs and labor waste.

[0038] Understandably, at least two support seats 300 are arranged side by side, and these two support seats 300 can form a tooling platform for heat exchanger pipe installation. Since the spacing adjustment structure 200 can adjust the spacing between the at least two support seats 300, the area of ​​the tooling platform can be varied through the spacing adjustment structure 200. This allows the tooling platform area to be reduced to match the size of the heat exchanger when the heat exchanger size is small, by driving the support seats 300 to move closer to each other; when the heat exchanger size is large, by driving the support seats 300 to move further apart, the area of ​​the tooling platform can be increased to match the size of the heat exchanger.

[0039] It should be noted that the size difference of heat exchangers of different models mainly lies in their length, with the largest difference reaching several meters. Therefore, the spacing adjustment structure 200 can adjust the spacing between several support seats 300, and can realize the overall size change of several support seats 300 arranged side by side, thereby meeting the pipe installation requirements of heat exchangers of different lengths.

[0040] In some embodiments of this utility model, the spacing adjustment structure 200 includes a left fixed frame 210, a right fixed frame 220 and at least one set of scissor assemblies 230, the at least one set of scissor assemblies 230 being connected between the left fixed frame 210 and the right fixed frame 220, and at least two support seats 300 being disposed on the at least one set of scissor assemblies 230.

[0041] In some embodiments of the present invention described above, the spacing adjustment structure 200 includes a left fixed frame 210, a right fixed frame 220, and at least one set of scissor assemblies 230. At least two support seats 300 are disposed on at least one set of scissor assemblies 230, and at least one set of scissor assemblies 230 are connected between the left fixed frame 210 and the right fixed frame 220. The spacing between at least two support seats 300 is adjusted by at least one set of scissor assemblies 230. The scissor assemblies 230 enable at least two support seats 300 to move synchronously closer to or further away from each other, ensuring the flatness of the tooling table formed by at least two support seats 300, ensuring the flatness of the pipe threading platform, and effectively ensuring the smooth pipe threading process.

[0042] It should be noted that by using at least one set of scissor lift assemblies 230 connected between the left fixed frame 210 and the right fixed frame 220, so that at least two of the support seats 300 form a tooling table for pipe threading, it can be ensured that the tooling table forms an integral structure. Then, a support structure is set at the bottom of the tooling table to fix the tooling table. Moreover, the support structure can be used to position the tooling table through three-point fixing, reducing the difficulty of fixing the tooling table.

[0043] In some embodiments of this utility model, at least one set of scissor lift assemblies 230 are rotatably mounted on the left fixed frame 210 and the right fixed frame 220 at their top ends, and sliding grooves 240 are provided on both the left fixed frame 210 and the right fixed frame 220. At least one set of scissor lift assemblies 230 are slidably mounted on the bottom ends within the sliding grooves 240, driving the left fixed frame 210 and the right fixed frame 220 to move closer to or further away from each other, thereby adjusting the distance between at least two support seats 300.

[0044] In some embodiments of the present invention described above, at least one set of scissor lift assemblies 230 have their top ends rotatably mounted on the left fixed frame 210 and the right fixed frame 220, respectively, and their bottom ends are slidably mounted in the sliding groove 240, so that at least one set of scissor lift assemblies 230 can be folded or unfolded, thereby adjusting the distance between at least two support seats 300. The distance between at least two support seats 300 can be synchronously adjusted by at least one set of scissor lift assemblies 230, making adjustment convenient and quick, greatly improving adjustment efficiency, and thus improving production efficiency.

[0045] It is understood that when at least two sets of the scissor lift assembly 230 are provided, the at least two sets of the scissor lift assembly 230 are connected to each other, enabling synchronous folding or unfolding. This can be known from existing technology. Furthermore, by using at least two sets of scissor lift assembly 230 to enable at least two support seats 300 to move synchronously closer to or further away from each other, the area adjustment of the tooling table can be solved, greatly improving production efficiency.

[0046] It should be noted that sliding grooves 240 can also be provided on the left fixed frame 210 and the right fixed frame 220, and the two ends of the top of at least one set of scissor assemblies 230 can also be slidably disposed on the left fixed frame 210 and the right fixed frame 220, thereby realizing adjustment.

[0047] In some embodiments of this utility model, each set of scissor fork assemblies 230 includes two sets of scissor fork structures 250 and several connecting rods 260. The two sets of scissor fork structures 250 are arranged opposite to each other, and the support base 300 is arranged between the two sets of scissor fork structures 250.

[0048] The scissor structure 250 includes a first support arm 251 and a second support arm 252 arranged in an X-shape. The first support arm 251 and the second support arm 252 are hinged at the middle. A plurality of connecting rods 260 are connected between the first support arm 251 and the second support arm 252.

[0049] In some embodiments of the present invention described above, each set of scissor lift assemblies 230 includes two sets of scissor lift structures 250 and several connecting rods 260. The two sets of scissor lift structures 250 are arranged opposite to each other, and the support base 300 is disposed between the two sets of scissor lift structures 250. The two sets of scissor lift structures 250 are connected by several connecting rods 260, thereby enabling each set of scissor lift assemblies 230 to form a stable support. The support base 300 is disposed between the two sets of scissor lift structures 250 to ensure stable connection of the support base 300. The two sets of scissor lift structures 250 can be folded synchronously, thereby ensuring the consistency of movement on both sides of the support base 300.

[0050] The scissor structure 250 includes a first support arm 251 and a second support arm 252 arranged in an X-shape. The first support arm 251 and the second support arm 252 are hinged at the middle. A plurality of connecting rods 260 are connected between the first support arm 251 and the second support arm 252. The top ends of the first support arm 251 and the second support arm 252 are respectively connected to two support seats 300. When the first support arm 251 and the second support arm 252 are folded around the central hinge axis, the two support seats 300 at the top ends of the first support arm 251 and the second support arm 252 can move closer to each other. When the first support arm 251 and the second support arm 252 are unfolded around the central hinge axis, the two support seats 300 at the top ends of the first support arm 251 and the second support arm 252 can move further away from each other, thereby adjusting the distance between the two support seats 300.

[0051] In some embodiments of this utility model, when the scissor lift assembly 230 is provided with at least two sets, the top end of the first support arm 251 and the top end of the second support arm 252 are rotatably connected between two adjacent sets of the scissor lift structure 250, and the bottom end of the second support arm 252 and the bottom end of the first support arm 251 are rotatably connected.

[0052] In some embodiments of the present invention described above, when at least two sets of scissor fork assemblies 230 are provided, the top ends of the first support arm 251 and the second support arm 252 are rotatably connected between adjacent sets of scissor fork structures 250, and the bottom ends of the second support arm 252 and the first support arm 251 are rotatably connected. This ensures that at least two sets of scissor fork assemblies 230 are rotatably connected to each other, thereby enabling at least two sets of scissor fork assemblies 230 to fold or unfold synchronously, ensuring that at least two support seats 300 move closer or further away from each other simultaneously; and the spacing between any two adjacent support seats 300 is the same, improving aesthetics.

[0053] In some embodiments of this utility model, a sliding shaft 310 is also included. A sliding sleeve 320 is provided on both the left fixed frame 210 and the right fixed frame 220. The sliding sleeve 320 cooperates with the sliding shaft 310 so that the left fixed frame 210 and the right fixed frame 220 can slide closer to each other or further away from each other along the sliding shaft 310.

[0054] In some embodiments of the present invention described above, a sliding shaft 310 is also included. The left fixed frame 210 and the right fixed frame 220 are both slidably mounted on the sliding shaft 310 via a sliding sleeve 320, thereby enabling the left fixed frame 210 and the right fixed frame 220 to slide along the sliding shaft 310 to complete the adjustment of the spacing between at least two support seats 300.

[0055] It is understood that the position of one of the left fixed frame 210 and the right fixed frame 220 can be fixed, and adjustment can be achieved by moving the other of the left fixed frame 210 and the right fixed frame 220; alternatively, both the left fixed frame 210 and the right fixed frame 220 can be in an active state, and adjustment can be achieved by adjusting the left fixed frame 210 and the right fixed frame 220.

[0056] It should be noted that the sliding shaft 310 is mounted on the support frame 100, and the left fixed frame 210 and the right fixed frame 220 are both slidably mounted on the sliding shaft 310 via the sliding sleeve 320.

[0057] In some embodiments of this utility model, a height adjustment component 400 is also included, wherein one of the left fixed frame 210 or the right fixed frame 220 is connected to the height adjustment component 400, and the height adjustment component 400 is disposed on the side away from the sliding shaft 310.

[0058] In some embodiments of this utility model described above, by providing a height adjustment component 400, which is connected to one of the left fixed frame 210 or the right fixed frame 220, the height adjustment component 400 can adjust the height of one of the left fixed frame 210 or the right fixed frame 220. Since the height adjustment component 400 is located on the side away from the sliding shaft 310, when the height adjustment component 400 adjusts the left fixed frame 210 or the right fixed frame 220, the angle of the tooling table surface formed by at least two of the support seats 300 changes, thereby achieving height adjustment and meeting the usage needs of different workers.

[0059] It should be noted that since pipe threading is a unilateral operation, changing the angle of the tooling table, i.e., adjusting the height of the pipe threading side, can meet the needs of workers of different heights.

[0060] In some embodiments of this utility model, the height adjustment assembly 400 includes a lifting motor 410, a ball screw 420, a screw slider 430, and a lifting plate 440. The lifting motor 410 is connected to the ball screw 420, the screw slider 430 cooperates with the ball screw 420, the first end of the lifting plate 440 is connected to the screw slider 430, and the second end of the lifting plate 440 is connected to one of the left fixed frame 210 or the right fixed frame 220.

[0061] In some of the embodiments of this utility model described above, the height adjustment component 400 is composed of a lifting motor 410, a ball screw 420, and a screw slider 430. The lifting motor 410 drives the ball screw 420 to rotate, which in turn drives the screw slider 430 to move on the ball screw 420, thereby realizing the angle adjustment of the left fixed frame 210 or the right fixed frame 220 and changing the height of the tooling table.

[0062] In some embodiments of this utility model, two sets of sliding shafts 310 are provided, and both ends of the left fixed frame 210 and the right fixed frame 220 are slidably disposed on the two sets of sliding shafts 310.

[0063] In some embodiments of the present invention described above, two sets of sliding shafts 310 are provided. Both ends of the left fixed frame 210 and the right fixed frame 220 are slidably disposed on the two sets of sliding shafts 310, thereby mounting the left fixed frame 210 and the right fixed frame 220 between the two sets of sliding shafts 310. The structure of the left fixed frame 210 and the right fixed frame 220 is more stable, and the stability of the tooling table is more effectively guaranteed.

[0064] Understandably, by setting a height adjustment component 400 on the sliding shaft 310, the height of the tooling table can also be changed to meet the usage needs of workers of different heights.

[0065] In some embodiments of this utility model, the sliding sleeve 320 is further provided with a locking element. By providing the locking element, the tooling table can be fixed. Specifically, the locking element is a locking bolt.

[0066] It should be noted that in some embodiments, the friction between the sliding sleeve 320 and the sliding shaft 310 and / or the restraining force between the scissor assemblies can also ensure that the tooling table can be positioned.

[0067] In some embodiments of this utility model, the spacing adjustment structure 200 includes an adjustment guide rail and at least two adjustment sliders. At least two of the support seats 300 are connected to the adjustment sliders. The adjustment sliders are slidably disposed on the adjustment guide rail, so that at least two of the support seats 300 are slidably disposed on the adjustment guide rail via the adjustment sliders.

[0068] Understandably, in order to meet the needs of staff of different heights, the height adjustment component 400 can choose an existing lifting and adjusting mechanism to achieve height adjustment.

[0069] In some of the embodiments of this utility model described above, the spacing adjustment structure 200 includes an adjustment guide rail and several adjustment sliders. By cooperating with the adjustment sliders and the adjustment guide rail, the spacing between at least two support seats 300 can also be adjusted, thereby enabling at least two support seats 300 to form a tooling table for pipe threading.

[0070] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A heat exchanger tube-insertion auxiliary device, characterized in that, It includes a spacing adjustment structure and at least two support seats, wherein the spacing adjustment structure is connected to some or all of the support seats and can adjust the spacing between two adjacent support seats; The spacing adjustment structure includes a left fixed frame, a right fixed frame, and at least one set of scissor assemblies. The at least one set of scissor assemblies is connected between the left fixed frame and the right fixed frame. At least one support seat is disposed on the at least one set of scissor assemblies. The at least one set of scissor assemblies drives at least two support seats to move closer or further away from each other synchronously. At least one set of the scissor lift assembly is disposed between the left fixed frame and the right fixed frame, and a sliding groove is provided on both the left fixed frame and the right fixed frame. The two ends of the at least one set of the scissor lift assembly are slidably disposed in the sliding groove, driving the left fixed frame and the right fixed frame to move closer to each other or further away from each other, thereby adjusting the distance between at least two of the support seats.

2. The heat exchanger tube-insertion auxiliary device according to claim 1, characterized in that, Each set of scissor lift assemblies includes two sets of scissor lift structures and several connecting rods. The two sets of scissor lift structures are arranged opposite to each other, and the support base is arranged between the two sets of scissor lift structures.

3. The heat exchanger tube-insertion auxiliary device according to claim 2, characterized in that, The scissor lift structure includes a first support arm and a second support arm arranged in an X-shape, with the first support arm and the second support arm hinged at the middle, and a plurality of connecting rods connected between the first support arm and the second support arm.

4. The heat exchanger tube-insertion auxiliary device according to claim 3, characterized in that, When the scissor lift assembly is provided in at least two sets, the top end of the first support arm and the top end of the second support arm are rotatably connected between two adjacent sets of the scissor lift structure, and the bottom end of the second support arm and the bottom end of the first support arm are rotatably connected.

5. The heat exchanger tube-insertion auxiliary device according to claim 1, characterized in that, It also includes a sliding shaft, and both the left fixed frame and the right fixed frame are provided with sliding sleeves. The sliding sleeves cooperate with the sliding shaft so that the left fixed frame and the right fixed frame can slide closer to each other or further away from each other along the sliding shaft.

6. The heat exchanger tube-insertion auxiliary device according to claim 5, characterized in that, It also includes a height adjustment component, wherein the left fixed frame or the right fixed frame is connected to the height adjustment component, and the height adjustment component is located on the side away from the sliding axis.

7. The heat exchanger tube-insertion auxiliary device according to claim 6, characterized in that, The height adjustment assembly includes a lifting motor, a ball screw, a screw slider, and a lifting plate. The lifting motor is connected to the ball screw, the screw slider cooperates with the ball screw, the first end of the lifting plate is connected to the screw slider, and the second end of the lifting plate is connected to one of the left fixed frame or the right fixed frame.

8. The heat exchanger tube-insertion auxiliary device according to claim 5, characterized in that, The sliding shaft is provided in two sets, and both ends of the left fixed frame and the right fixed frame are slidably mounted on the two sets of sliding shafts.

9. The heat exchanger tube-insertion auxiliary device according to claim 5, characterized in that, The sliding sleeve is also equipped with a locking element.

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