Outdoor heat pipe support limiting device

Abstract

The application discloses an outdoor heat pipeline support limiting device and belongs to the technical field of heat pipeline installation. The device comprises a pre-buried part, a support part and a driving assembly. The pre-buried part comprises a pre-buried support and a mounting support fixed on the pre-buried support. The support part comprises two support parts, each of which comprises a support plate and an auxiliary support inserted into the support plate. The support plate and the auxiliary support are perpendicular to each other. The auxiliary support is located outside the pre-buried support, and the driving assembly is arranged between the auxiliary support and the pre-buried support. The pre-buried part and the two support parts are connected through the driving assembly to form a unit limiting device, and at least two unit limiting devices are spliced. The device has the advantages that stress concentration of a pipeline in a settlement section can be effectively reduced during long-time use, pipeline flange leakage and pipe damage can be avoided, and the life and property safety of residents around the pipeline are effectively guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of thermal pipeline installation technology, and particularly relates to an outdoor thermal pipeline support limiting device. Background Technology

[0002] Outdoor heating pipelines, due to their high design temperatures, experience significant thermal displacement and stress. Therefore, they typically require limiting supports to restrict expansion and reduce stress levels. This is especially true for buried steam pipelines; after ground subsidence or substantial additional displacement, excessive stress can lead to flange leaks, causing high-temperature, high-pressure steam jets that can result in injuries or fatalities, threatening the lives and property of nearby residents.

[0003] Chinese Patent No. CN113374939B discloses an outdoor heating pipe support limiting device, including a guide support and a pre-embedded support. A working steel pipe is fixedly installed on the upper surface of the guide support. The pre-embedded support is pre-buried underground and is fixedly connected to the guide support. The pre-embedded support is also fixedly connected to the limiting block and is threadedly connected to the limiting block. A pre-embedded steel plate is fixedly installed inside the pre-embedded support. In actual use, the locking block is aligned with the guide groove on the limiting block. When pressed down, the locking block moves into the deep groove. When the locking block descends to the horizontal plane of the groove, it enters the groove under the action of the spring, thereby limiting the position of the guide support in the vertical direction.

[0004] In actual pipeline laying, the aforementioned device inevitably encounters sections prone to settlement. Due to the soft ground, the embedded supports may collapse during use, causing localized bending of the pipeline, leading to stress concentration, and ultimately fatigue failure and safety accidents. Therefore, there is an urgent need to develop a device to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to meet practical needs by providing an outdoor heating pipeline support limiting device to reduce stress concentration in pipelines in settlement sections.

[0006] In a first aspect, to achieve the aforementioned objectives, the first objective of this invention is to provide an outdoor heating pipe support limiting device, comprising: an embedded part and a support part.

[0007] The embedded part includes an embedded bracket and a mounting bracket fixed on the embedded bracket;

[0008] The support consists of two parts, each including a support plate and an auxiliary bracket inserted into the support plate; the support plate and the auxiliary bracket are perpendicular to each other; the auxiliary bracket is located outside the pre-embedded bracket, and a drive assembly is provided between the auxiliary bracket and the pre-embedded bracket;

[0009] The pre-embedded part and the two support parts are connected by a drive assembly to form a unit limiting device, and at least two of the unit limiting devices are spliced ​​together.

[0010] Furthermore, the upper end of the mounting bracket is provided with an arc-shaped piece for placing the pipe; the upper end of the pre-embedded bracket is provided with a groove, and the whole is in the shape of "Y"; the lower end of the mounting bracket is fixed in the groove of the pre-embedded bracket, and the upper end of the mounting bracket is higher than the upper end of the pre-embedded bracket.

[0011] Furthermore, the support plate is a rectangular plate, and a notch for matching the pre-embedded bracket is provided in the middle of one side of the rectangular plate parallel to the pipe direction; a through hole for insertion with the auxiliary bracket is provided on the support plate, the auxiliary bracket is a rectangular column, and the bottom of the auxiliary bracket extends out of the lower surface of the support plate; a locking hole is provided on the side of the upper part of the auxiliary bracket, one end of the support rod is kept horizontal and locked into the locking hole, and an installation groove is provided on the side of the mounting bracket perpendicular to the pipe direction, the other end of the support rod is locked into the installation groove, and a gap is provided between the support rod and the top wall of the installation groove.

[0012] Furthermore, the drive assembly includes a first rack, a second rack, and a gear. The gear is coaxially mounted on a mounting shaft, and both ends of the mounting shaft are mounted on a support plate between the pre-embedded bracket and the auxiliary bracket. The mounting shaft is parallel to the pipe. The gear meshes with the first rack and the second rack respectively. The first rack is vertically fixed to the outside of the groove wall of the pre-embedded bracket, and the second rack is vertically fixed to the side of the auxiliary bracket opposite to the mounting bracket.

[0013] Furthermore, the drive assembly, support plate and auxiliary bracket provided on both sides of the pre-embedded part and the pipeline form a unit limiting device, and at least two unit limiting devices splice the edges of adjacent support plates along the pipeline direction by welding or plugging.

[0014] Furthermore, when ground subsidence occurs, the pre-embedded bracket drives the first rack to move downward relative to the support plate, which in turn drives the gear to rotate. The gear drives the second rack to move upward, which in turn drives the auxiliary bracket to move upward. The auxiliary bracket then drives the support rod to move upward, and the inner top wall of the mounting groove contacts the top of the support rod.

[0015] Furthermore, the force generated by the weight of the pipe acts on the mounting bracket, causing downward displacement. The inner top wall of the mounting groove contacts the top of the support rod, causing the support rod to move downward. The support rod causes the auxiliary bracket to move downward, which in turn causes the second rack to move downward. The second rack causes the gear to rotate, which in turn causes the first rack to move upward. The first rack then causes the pre-embedded bracket to move upward.

[0016] Furthermore, the auxiliary bracket has a groove in the vertical direction relative to the mounting bracket, a slider is placed in the groove, the slider is connected to the support rod, and the second rack is fixed on the slider in the vertical direction.

[0017] Furthermore, the support rod has a slot at one end near the mounting bracket, a plug rod is fixed in the slot, and an extension block is provided at the end of the plug rod away from the slot.

[0018] Furthermore, the extension block has a locking block at the end away from the insertion rod, and the mounting groove has a locking slot on its wall, with the locking block and the locking slot matching and engaging.

[0019] The advantages of this application are:

[0020] Based on the above technical solution, in actual use, when the pipeline laying area encounters subsidence geology, support plates are first laid along the pipeline laying direction. The support plates are arranged in pairs, with each pair of support plates located on both sides of the pipeline. Then, the pre-embedded brackets are installed. After the pre-embedded installation is completed, the first rack is engaged with the gear, and then the mounting bracket is fixedly installed. After the mounting bracket is fixedly installed, the second rack is engaged with the gear, and then the support rod is rotated so that the support rod faces the mounting bracket. The contact limiter restricts the position of the extension block on the support rod, and the worker drives the extension block to move towards the mounting bracket and inserts the extension block into the mounting groove. At this time, there is a certain gap between the top of the extension block and the inner top wall of the mounting groove. Then, the pipeline can be placed on the mounting bracket to complete the pipeline installation.

[0021] As the service life increases, the limiting bracket will inevitably sink due to the weight of the pipes and fittings themselves and the settlement of the foundation. As the limiting bracket moves downwards, it drives the first rack downwards, which in turn drives the gear to deflect. The gear then drives the second rack on the other side upwards, which in turn drives the support rod upwards. The support rod then drives the extension block upwards within the mounting groove. Once the top of the extension block abuts against the inner top wall of the mounting groove, it effectively limits the vertical movement of the mounting bracket. This effectively prevents stress concentration in the pipeline caused by excessive settlement of the limiting bracket during long-term use, which could lead to flange leaks and fitting damage, thus improving the operational safety and service life of the pipeline. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of an outdoor heating pipe support limiting device provided in the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the support plate and auxiliary bracket provided in the first embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the driving component provided in the first embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the auxiliary support structure provided in the second embodiment of the present invention;

[0027] Figure 5 This is a partial structural schematic diagram of the slider provided in the second embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional view of the auxiliary support provided in the second embodiment of the present invention;

[0029] Figure 7 This is a cross-sectional view of the support rod provided in the third embodiment of the present invention;

[0030] Figure 8 for Figure 7 A magnified view of A in the middle.

[0031] In the diagram: 1. Embedded bracket; 2. Support rod; 3. Drive assembly; 4. Slide groove; 5. Rotating groove; 6. Slot; 7. Limiting element; 11. Support plate; 12. Mounting bracket; 13. Pipe; 14. Auxiliary bracket; 15. Perforation; 21. Mounting groove; 22. Extension block; 31. First rack; 32. Gear; 33. Second rack; 34. Bearing seat; 35. Bearing; 36. Mounting shaft; 41. Slider; 51. Rotating shaft; 52. Rotating hole; 61. Insert rod; 62. Locking block; 63. Locking groove; 64. Abutment plate; 71. Mounting plate; 72. Mounting hole; 73. Limiting hole; 74. Elastic element; 75. Connecting strip. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] First Embodiment

[0036] This invention provides an outdoor heating pipe support limiting device, such as... Figure 1 and Figure 2 As shown, it includes: a limiting part and a supporting part.

[0037] The limiting part includes a pre-embedded bracket 1 and an installation bracket 12 fixed on the pre-embedded bracket 1, which is used to support the installation of the pipeline.

[0038] The mounting bracket 12 has an arc-shaped piece at its upper end for placing the pipe 13; the pre-embedded bracket 1 has a groove at its upper end, forming a "Y" shape. The lower end of the mounting bracket 12 is fixed in the groove at the upper end of the pre-embedded bracket 1, and the upper height of the mounting bracket 12 is greater than the upper height of the pre-embedded bracket 1; the two sides of the groove at the upper end of the pre-embedded bracket 1 are parallel to the direction of the pipe 13. The mounting bracket 12 and the pre-embedded bracket 1 are connected by welding, plugging, threaded connection, or lap joint, which allows for a certain displacement in the vertical direction.

[0039] like Figure 2 and Figure 3 As shown, there are two support parts, each of which includes a support plate 11 and an auxiliary bracket 14 inserted into the support plate 11; the support plate 11 and the auxiliary bracket 14 are perpendicular to each other; the auxiliary bracket 14 is located outside the pre-embedded bracket 1, and a drive assembly is provided between the auxiliary bracket 14 and the pre-embedded bracket 1.

[0040] The support plate 11 is a thick plate with high hardness and is rectangular. A notch for matching the pre-embedded bracket 1 is provided in the middle of one side of the rectangular plate parallel to the direction of the pipe 13. A through hole 15 for insertion with the auxiliary bracket 14 is provided on the support plate 11. The auxiliary bracket 14 is a rectangular column. The bottom of the auxiliary bracket 14 extends out of the lower surface of the support plate 11 through the through hole 15. The auxiliary bracket 14 can be displaced in the vertical direction.

[0041] The auxiliary bracket 14 has a locking hole on its upper side, and one end of the support rod 2 is locked into the locking hole while maintaining a horizontal direction; the mounting bracket 12 has a mounting groove 21 on its side perpendicular to the direction of the pipe 13, the mounting groove 21 and the support rod 2 are at the same horizontal height, and the other end of the support rod 2 can be locked into the mounting groove 21. There is a gap between the support rod 2 and the top wall of the mounting groove 21 to facilitate a certain displacement of the support rod 2.

[0042] The drive assembly includes a first rack 31, a second rack 33, and a gear 32. The gear 32 is coaxially fixed on a mounting shaft 36. Bearings 35 at both ends of the mounting shaft 36 are mounted on a support plate 11 between the pre-embedded bracket 1 and the auxiliary bracket 14 via bearing seats 34. The mounting shaft 36 and the pipe 13 are parallel in the same direction. The gear 32 meshes with the first rack 31 and the second rack 33 respectively. The first rack 31 is vertically fixed to the outside of the groove wall of the pre-embedded bracket 1, and the second rack 33 is vertically fixed to the side of the auxiliary bracket 14 opposite to the mounting bracket 12. When the gear 32 rotates, it can drive the first rack 31 and the second rack 33 to move in opposite directions.

[0043] The embedded part and the two supporting parts are connected by a drive assembly to form a unit limiting device. Multiple unit limiting devices are spliced ​​together to achieve long-distance pipeline limiting. Specifically, the embedded part and the two sides of the pipeline are provided with drive assemblies, support plates 11 and auxiliary brackets 14 to form a unit limiting device. Multiple unit limiting devices are spliced ​​along the pipeline 13 direction by welding or plugging to achieve long-distance pipeline limiting. The specific splicing method of the support plates 11 can be selected according to the actual geological conditions of the settlement area. The support plates 11 effectively increase the contact area with the ground, thereby reducing the pressure on the ground in the settlement area and enhancing the support effect.

[0044] During normal use, the weight of the pipe 13 and the fluid within it is applied to the ground via the mounting bracket 12. The buried bracket 1 is typically wider at the top and narrower at the bottom, making it prone to settlement in areas susceptible to subsidence. When the limiting part settles, the buried bracket 1 causes the first rack 31 to move downwards, which in turn causes the gear 32 to rotate. The gear 32 then causes the second rack 33 to move upwards in the opposite direction. The second rack 33 then causes the auxiliary bracket 14 to move upwards, which in turn causes the support rod 2 to move upwards. This brings the inner top wall of the mounting groove 21 into contact with the support rod 2, providing vertical support for the mounting bracket 12 and preventing significant vertical displacement of the mounting bracket 12 and the placed pipe 13. This reduces stress concentration on the pipe 13 and provides good protection.

[0045] If the weight of pipe 13 is large and it is located in an area prone to settlement, the auxiliary support 14 will generate a vertical force due to the weight of the pipe, the fluid in the pipe, and the overall weight of the limiting part. This force acts on the mounting bracket 12, causing downward displacement. The inner top wall of the mounting groove 21 contacts the top of the support rod 2, causing the support rod 2 to move downward. The support rod 2 causes the auxiliary support 14 to move downward, which in turn causes the second rack 33 to move downward. The second rack 33 causes the gear 32 to rotate, which in turn causes the first rack 31 to move upward. The first rack 31 causes the embedded support 1 to move upward, which can provide a certain degree of support for pipe 13, preventing further vertical displacement of pipe 13 and thus avoiding stress concentration in pipe 13, providing a certain degree of protection for pipe 13.

[0046] Second Embodiment

[0047] like Figure 4 and Figure 5As shown, the auxiliary bracket 14 can be provided with a sliding groove 4 in the vertical direction relative to the mounting bracket 12. A slider 41 is placed in the sliding groove 4. The slider 41 is connected to the support rod 2. The second rack 33 is fixed on the slider 41 in the vertical direction. The slider 41 can be a T-shaped groove that matches the sliding groove 4, or it can be a dovetail groove, etc.

[0048] Specifically, the slider shown has a rotating hole 52 vertically arranged from the top, and a rotating shaft 51 is installed inside the rotating hole 52. The rotating shaft 51 is fixedly connected to the support rod 2. The rotating hole 52 and the rotating shaft 51 facilitate the storage of the auxiliary bracket 14 and the support rod 2, making actual production modular. The support rod 2 and the auxiliary bracket 14 are produced, assembled, and transported separately, improving production efficiency. The installation method, angle, and position of the auxiliary bracket 14 can be flexibly selected, further improving the protection effect on the pipe 13. In addition, as Figure 6 As shown, the groove above the slide 4 can be set as a rotating groove 5 for the support rod 2 to rotate.

[0049] The rest of the content is the same as in the first embodiment.

[0050] When the pipe 13 is displaced downwards due to its weight, the embedded bracket 1 moves downwards, causing the first rack 31 to move downwards. The first rack 31 drives the gear 32 to rotate, the gear 32 drives the second rack 33 to move upwards, the second rack 33 drives the slider 41 to move upwards, and the slider 41 drives the support rod 2 to move. When the top of the support rod 2 contacts the inner top wall of the mounting groove 21, it can play a certain positioning role for the mounting bracket 12 and the pipe 13, avoiding the vertical displacement of the pipe 13, reducing the stress concentration caused by the displacement of the pipe 13, and playing a good protective role for the pipe 13.

[0051] Third Embodiment

[0052] like Figure 7 As shown, the support rod 2 has a slot 6 at one end near the mounting bracket 12, and a rod 61 is fixed in the slot 6. An extension block 22 is provided at the end of the rod 61 away from the slot 6. The extension block 22 effectively reduces the overall length of the support rod 2, saves transportation space, further improves transportation efficiency, reduces transportation costs, and improves transportation benefits.

[0053] Preferably, two slots 6 can be provided, with the two slots 6 located on both sides of the support rod 2 respectively. Each slot 6 is provided with a plug rod 61, which improves the support and connection effect of the extension block 22, making the extension block 22 more stable and secure in actual use.

[0054] The extension block 22 is provided with a locking block 62 at the end away from the insertion rod 61, and the mounting groove 21 is provided with a locking groove 63. The locking block 62 and the locking groove 63 are matched and locked in. The locking block 62 and the locking groove 63 can limit the deflection angle of the support rod 2 on the auxiliary bracket 14 to a certain extent.

[0055] Optionally, such as Figure 7 and Figure 8 As shown, an abutment plate 64 is provided at the bottom of the extension block 22. When the locking block 62 is inserted into the locking groove 63, the abutment plate 64 just contacts the side wall of the mounting bracket 12, which further improves the overall stability of the support rod 2 and enhances the protection of the pipe 13 to a certain extent.

[0056] Optionally, a limiting member 7 can be provided on the extension block 22. The limiting member 7 is used to limit the position of the two extension blocks on the support rod 2. The limiting member 7 is a limiting pin, which includes a mounting plate 71, mounting holes 72, an elastic element 74, and a connecting strip 75. The mounting plate 71 is a rectangular plate, fixed to the lower end face of the extension block 22 near the support rod 2. The mounting plate 71 has two mounting holes 72, located at both ends of the mounting plate 71 respectively. The connecting strip 75 can be inserted into the mounting holes 72 to connect the two mounting holes 72. The support rod 2 has a limiting hole 73, and the connecting strip 75 can be inserted into the limiting hole 73 through the mounting hole. The elastic element 74 is a tension spring, with one end fixed to the mounting plate 71 around the mounting hole 72, and the other end fixedly connected to the connecting strip 75. The limiting pin is used to limit the position of the extension block 22, and the setting of the elastic element 74 can prevent the limiting pin from dislodging from the limiting hole 73 due to vibration, thereby improving the overall safety and reliability of the device.

[0057] The rest of the content is the same as in the first embodiment.

[0058] In summary, during actual use, when the area where pipe 13 is laid encounters settlement geology, support plates 11 are first laid along the laying direction of pipe 13, with each pair of support plates 11 positioned on both sides of pipe 13. Then, the pre-embedded brackets 1 are installed. After pre-embedding, the first rack 31 meshes with the gear 32, and then the mounting bracket 12 is fixedly installed. After the mounting bracket 12 is fixedly installed, the second rack 33 meshes with the gear 32, and then the support rod 2 is rotated so that it faces the mounting bracket 12. This releases the restriction of the extension block 22 on the support rod 2 by the limiting member 7. The worker then moves the extension block 22 toward the mounting bracket 12 and inserts it into the mounting groove 21. At this point, there is a certain gap between the top of the extension block 22 and the inner top wall of the mounting groove 21. Then, pipe 13 can be placed on the mounting bracket 12, completing the installation of pipe 13.

[0059] As usage time increases, settlement will inevitably occur due to the gravity of pipe 13, mounting bracket 12, etc. As the embedded bracket 1 moves downward, it drives the first rack 31 to move downward. The first rack 31 drives the gear 32 to deflect, and the gear 32 drives the second rack 33 on the other side to move upward, which in turn drives the support rod 2 to move upward. The support rod 2 drives the extension block 22 to move upward in the mounting groove 21. When the top of the extension block 22 abuts against the inner top wall of the mounting groove 21, it can limit the vertical movement of the mounting bracket 12. This can prevent stress concentration in pipe 13 due to ground settlement during long-term use, which could lead to flange leakage and pipe fitting damage. This effectively protects the life and property safety of residents around pipe 13.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A limiting device for an outdoor heating pipe support, characterized in that, Includes embedded parts and support parts; The embedded part includes an embedded bracket (1) and an installation bracket (12) fixed on the embedded bracket (1). There are two support parts, each of which includes a support plate (11) and an auxiliary bracket (14) inserted into the support plate (11); the support plate (11) and the auxiliary bracket (14) are perpendicular to each other; the auxiliary bracket (14) is located outside the pre-embedded bracket (1), and a drive assembly is provided between the auxiliary bracket (14) and the pre-embedded bracket (1); The pre-embedded part and the two support parts are connected by a drive assembly to form a unit limiting device, and at least two of the unit limiting devices are spliced ​​together. The drive assembly includes a first rack (31), a second rack (33), and a gear (32). When the ground settles, the pre-embedded bracket drives the first rack (31) to move downward relative to the support plate (11), which drives the gear (32) to rotate. The gear (32) drives the second rack (33) to move upward. The second rack (33) drives the auxiliary bracket (14) to move upward. The auxiliary bracket (14) drives the support rod (2) to move upward. The inner top wall of the mounting groove (21) and the top of the support rod (2) are in contact. The force generated by the weight of the pipe acts on the mounting bracket (12) to produce a downward displacement. The inner top wall of the mounting groove (21) and the top of the support rod (2) come into contact, causing the support rod (2) to move downward. The support rod (2) causes the auxiliary bracket (14) to move downward. The auxiliary bracket (14) causes the second rack (33) to move downward. The second rack (33) causes the gear (32) to rotate. The gear (32) causes the first rack (31) to move upward. The first rack (31) causes the pre-embedded bracket (1) to move upward.

2. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The upper end of the mounting bracket (12) is provided with an arc-shaped piece for placing the pipe (13); the upper end of the pre-embedded bracket (1) is provided with a groove, and the whole is in the shape of "Y"; the lower end of the mounting bracket (12) is fixed in the groove of the pre-embedded bracket (1), and the upper end height of the mounting bracket (12) is greater than the upper end height of the pre-embedded bracket (1).

3. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The support plate (11) is a rectangular plate, and a notch for matching the pre-embedded bracket (1) is provided in the middle of one side of the rectangular plate parallel to the direction of the pipe (13); a through hole (15) for inserting with the auxiliary bracket (14) is provided on the support plate (11), the auxiliary bracket (14) is a rectangular column, and the bottom of the auxiliary bracket (14) extends out of the lower surface of the support plate (11); a locking hole is provided on the side of the upper part of the auxiliary bracket (14), one end of the support rod (2) is kept horizontal and locked into the locking hole, the mounting bracket (12) is provided with a mounting groove (21) on the side perpendicular to the direction of the pipe (13), the other end of the support rod (2) is locked into the mounting groove (21), and a gap is provided between the support rod (2) and the top wall of the mounting groove (21).

4. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The gear (32) is mounted on the mounting shaft (36), and the two ends of the mounting shaft (36) are mounted on the support plate (11) between the pre-embedded bracket (1) and the auxiliary bracket (14). The mounting shaft (36) is parallel to the pipe (13). The gear (32) meshes with the first rack (31) and the second rack (33) respectively. The first rack (31) is vertically fixed outside the groove wall of the pre-embedded bracket (1), and the second rack (33) is vertically fixed on the side of the auxiliary bracket (14) opposite to the mounting bracket (12).

5. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The pre-embedded part and the drive assembly, support plate (11) and auxiliary bracket (14) provided on both sides of the pipeline form a unit limiting device. At least two unit limiting devices splice the edges of adjacent support plates (11) along the direction of the pipeline (13) by welding or plugging.

6. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The auxiliary bracket (14) has a groove (4) in the vertical direction relative to the mounting bracket (12). A slider (41) is placed in the groove (4). The slider (41) is connected to the support rod (2). The second rack (33) is fixed on the slider (41) in the vertical direction.

7. The outdoor heating pipe support limiting device according to claim 1, characterized in that, The support rod (2) has a slot (6) at one end near the mounting bracket (12), and a plug rod (61) is fixed in the slot (6). An extension block (22) is provided at the end of the plug rod (61) away from the slot (6).

8. The outdoor heating pipe support limiting device according to claim 7, characterized in that, The extension block (22) has a locking block (62) at one end away from the insertion rod (61), and the mounting groove (21) has a locking groove (63) on its groove wall. The locking block (62) and the locking groove (63) are matched and locked in.

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