A connecting device for heating and ventilation pipes in a heating and ventilation project

Abstract

The utility model discloses a kind of connecting devices for heating and ventilation pipe in heating and ventilation engineering, it is related to heating and ventilation engineering technical field, including bottom plate, two spring telescopic rods are fixedly connected in bottom plate upper surface left and right sides, support block is fixedly connected in the above of left and right sides spring telescopic rod, gasket is fixedly connected in the right side of left side spring telescopic rod in bottom plate upper surface, two mobile guide rails are fixedly connected in the right side of gasket in bottom plate upper surface, butt joint assembly is set in the above of left side gasket and right side mobile guide rail, left side butt joint assembly bottom is fixedly connected with gasket top by welding, right side butt joint assembly bottom is slidably connected with mobile guide rail by sliding block.Advantage lies in: the utility model, by left side butt joint assembly fixed, right side component can slide along mobile guide rail, cooperate the accurate drive of first electric telescopic rod, realize the accurate adjustment of pipeline axial position, ensure that port is completely aligned, reduce leakage risk from the root.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) engineering technology, specifically to a connection device for HVAC pipes in HVAC engineering. Background Technology

[0002] In academic classification, HVAC stands for Heating, Gas Supply, Ventilation and Air Conditioning Engineering, which includes three aspects: heating, ventilation, and air conditioning. Functionally, it is an integral part of buildings and an indispensable part of future homes. HVAC engineering encompasses these three aspects, collectively referred to as HVAC. The concept of HVAC engineering is that it primarily involves heating, air conditioning, and ventilation projects within building construction. Specifically, it includes trades such as heating, ventilation, exhaust, make-up air, smoke extraction, air conditioning, and cooling. HVAC piping is the structure used for heating transmission within HVAC engineering.

[0003] Traditional connections often rely on manual alignment of pipe ends, judging alignment by visual inspection alone. This can easily lead to poor sealing due to axial deviation or angular tilt, causing heating leaks. This not only affects system efficiency but may also result in energy waste and safety hazards. Existing fixing devices are mostly single-size clamps, which are difficult to adapt to HVAC pipes of different diameters. If the clamp is too loose, the pipe may shift during the connection process, while if it is too tight, it may damage the outer wall of the pipe. Moreover, the fixing process requires multiple people to work together, which is labor-intensive and inefficient. To address the above problems, a new connection device for HVAC pipes in HVAC engineering is proposed. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a connection device for HVAC pipes in HVAC engineering. It solves the problems of traditional connections relying heavily on manual alignment of pipe ends, judging alignment by visual inspection alone. This can easily lead to poor sealing due to axial deviation or angular tilt, causing heating leaks, affecting system efficiency, and potentially resulting in energy waste and safety hazards. Existing fixing devices are mostly single-specification clamps, making it difficult to adapt to HVAC pipes of different diameters. Too loose a clamp can cause pipe displacement during connection, while too tight a clamp can damage the pipe's outer wall. Furthermore, the fixing process requires multiple people, resulting in high labor intensity and low efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a connection device for HVAC pipes in HVAC engineering, comprising a base plate, two spring telescopic rods fixedly connected to the left and right sides of the upper surface of the base plate, a support block fixedly connected above the spring telescopic rods on both sides, a pad fixedly connected to the right side of the left spring telescopic rod on the upper surface of the base plate, two movable guide rails fixedly connected to the right side of the pad on the upper surface of the base plate, a docking assembly provided above the pad on the left side and the movable guide rail on the right side, the bottom of the docking assembly on the left side being fixedly connected to the top of the pad by welding, the bottom of the docking assembly on the right side being slidably connected to the movable guide rail by a sliding block, a first electric telescopic rod fixedly connected to the middle of the right side of the upper surface of the base plate, the output end of the first electric telescopic rod being connected to the bottom guide rail of the docking assembly on the right side by a connector.

[0006] Preferably, the docking assembly includes a fixing plate, and support rods are fixedly connected to the front and rear sides of the fixing plate, and a connecting plate is fixedly connected to the top of the two support rods.

[0007] Preferably, a second electric telescopic rod is fixedly connected to the upper center of the connecting plate. The output end of the second electric telescopic rod passes through the bottom surface of the connecting plate and is fixedly connected to a movable plate. The front and rear ends of the movable plate are slidably connected to two support rods respectively through guide sleeves.

[0008] Preferably, a mounting base is fixedly connected to the upper surface of the fixed plate between two support rods. A limit rod is fixedly connected to the front side inside the mounting base, and a bidirectional threaded rod is rotatably connected to the rear side inside the mounting base. Moving blocks are threadedly connected to the outer surfaces of both the front and rear sides of the bidirectional threaded rod, and the front sides of the two moving blocks are slidably connected to the limit rod.

[0009] Preferably, each of the two movable blocks is fixedly connected to a lower fixing block with an inner arc shape, and each of the two lower fixing blocks is fixedly connected to a second fixing seat on both the left and right sides, and each of the four second fixing seats is fixedly connected to a guide rod.

[0010] Preferably, a fixing strip is fixedly connected to the bottom surface of the movable plate, and a T-shaped groove is formed on the bottom surface of the fixing strip. T-shaped sliders are slidably connected to both the front and rear sides of the T-shaped groove. An upper fixing block is fixedly connected to the bottom of each of the two T-shaped sliders. A first fixing seat is connected to the left and right sides of each of the two upper fixing blocks via guide rails. The four first fixing seats are slidably connected to four guide rods respectively via guide sleeves.

[0011] Preferably, a servo motor for driving the bidirectional threaded rod to rotate is fixedly mounted on the side of the mounting base.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. This utility model uses a fixed left-side docking component and a right-side component that can slide along a moving guide rail. Combined with the precise drive of the first electric telescopic rod, it achieves accurate adjustment of the pipe's axial position, ensuring complete port alignment and reducing leakage risks at the source. The support block supported by the spring telescopic rod can adaptively buffer pipe height deviations, ensuring the pipe remains horizontal during docking and further improving port alignment accuracy. The automated drive structure (first electric telescopic rod, second electric telescopic rod, servo motor) replaces manual handling and alignment, reducing manpower input and significantly shortening the connection time for a single set of pipes. It is suitable for large-scale engineering construction. The left and right components have clear division of labor (left side fixed, right side movable), and the operation process is clear, requiring no professional skills to complete the operation, reducing reliance on the experience of construction personnel.

[0014] 2. The docking assembly of this utility model adopts a clamping structure of "lower fixed block + upper fixed block". The lower fixed block is driven by a servo motor to drive a bidirectional threaded rod to achieve spacing adjustment. The upper fixed block is lifted and lowered by a second electric telescopic rod. The upper fixed block can be finely adjusted along the T-shaped slide groove. The arc-shaped inner wall can closely fit the outer wall of pipes of different diameters, clamping firmly without damaging the pipe. The cooperation between the guide rod and the first fixed seat ensures that the upper fixed block lifts and lowers smoothly, avoiding deformation caused by uneven force on the pipe during clamping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the docking component structure in this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the fixing strip and the upper fixing block in this utility model;

[0018] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] The numbers on the map are:

[0020] 1. Base plate; 2. Spring telescopic rod; 3. Support block; 4. Pad block; 5. Moving guide rail; 6. First electric telescopic rod; 7. Connecting assembly; 701. Fixing plate; 702. Support rod; 703. Connecting plate; 704. Second electric telescopic rod; 705. Moving plate; 706. Fixing strip; 707. T-shaped slide; 708. T-shaped slider; 709. Upper fixing block; 710. First fixing seat; 711. Mounting seat; 712. Limiting rod; 713. Bidirectional threaded rod; 714. Moving block; 715. Lower fixing block; 716. Second fixing seat; 717. Guide rod; 718. Servo motor. Detailed Implementation

[0021] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0023] Reference Figure 1 - Figure 4 As shown, a connection device for HVAC pipes in HVAC engineering includes a base plate 1. Two spring-loaded telescopic rods 2 are fixedly connected to both the left and right sides of the upper surface of the base plate 1. The base plate 1 is made of Q235B carbon steel welded frame, which is rigid and corrosion-resistant. The four sets of spring-loaded telescopic rods 2 are symmetrically distributed, utilizing the elastic deformation of the springs (elastic coefficient adjustable) to adapt to the support requirements of pipes of different weights, ensuring that the pipes remain horizontal during connection and avoiding end-face tilting due to the pipe's own weight. Support blocks 3 are fixedly connected above the spring-loaded telescopic rods 2 on both the left and right sides. A pad 4 is fixedly connected to the right side of the left spring-loaded telescopic rod 2 on the upper surface of the base plate 1. Two movable guide rails 5 are fixedly connected to the right side of the pad 4 on the upper surface of the base plate 1. Support blocks 3 are fixedly connected above the left pad 4 and the right movable guide rails 5. Each component is equipped with a docking assembly 7. The bottom of the left docking assembly 7 is fixedly connected to the top of the pad block 4 by welding, and the bottom of the right docking assembly 7 is slidably connected to the moving guide rail 5 by a sliding block. A first electric telescopic rod 6 is fixedly connected to the middle right side of the upper surface of the base plate 1. The output end of the first electric telescopic rod 6 is connected to the bottom guide rail of the right docking assembly 7 by a connector. The inner arc surface of the support block 3 is coated with polytetrafluoroethylene, which has a low coefficient of friction and allows for axial fine adjustment of the pipeline during docking, reducing sliding resistance. The moving guide rail 5 is a linear ball bearing guide rail, which has low sliding resistance and ensures linear movement of the right docking assembly 7. The telescopic amount of the first electric telescopic rod 6 is controlled by PLC to achieve precise axial docking of the pipeline end face, replacing manual tapping adjustment and improving efficiency.

[0024] In this embodiment, the docking assembly 7 includes a fixing plate 701, and support rods 702 are fixedly connected to the front and rear sides of the fixing plate 701. A connecting plate 703 is fixedly connected to the top of the two support rods 702.

[0025] In this embodiment, a second electric telescopic rod 704 is fixedly connected to the upper center of the connecting plate 703. The output end of the second electric telescopic rod 704 passes through the bottom surface of the connecting plate 703 and is fixedly connected to a moving plate 705. The front and rear ends of the moving plate 705 are slidably connected to two support rods 702 through guide sleeves. The second electric telescopic rod 704 (with displacement sensor) synchronously drives two upper fixed blocks 709 through the moving plate 705 to achieve precise vertical clamping of the pipe. The guide sleeve of the moving plate 705 cooperates with the support rods 702 to ensure no swaying during the lifting process.

[0026] In this embodiment, a mounting base 711 is fixedly connected to the upper surface of the fixing plate 701 between two support rods 702. A limit rod 712 is fixedly connected to the front side inside the mounting base 711, and a bidirectional threaded rod 713 is rotatably connected to the rear side inside the mounting base 711. Moving blocks 714 are threadedly connected to the outer surfaces of both the front and rear sides of the bidirectional threaded rod 713. The front sides of the two moving blocks 714 are slidably connected to the limit rod 712. The thread helix angle design of the bidirectional threaded rod 713 (helix angle ≤ 5°) has self-locking properties to prevent loosening after clamping and ensure the reliability of pipe fixing. The limit rod 712 (optical axis material 40Cr) restricts the rotational freedom of the moving blocks 714 to ensure that the rotational movement of the bidirectional threaded rod 713 is converted into linear movement. The moving blocks 714 are made of copper-based self-lubricating material to reduce friction and wear with the limit rod 712.

[0027] In this embodiment, each of the two movable blocks 714 is fixedly connected to a lower fixed block 715 with an inner arc shape. The two lower fixed blocks 715 are fixedly connected to the left and right sides of the two lower fixed blocks 715. Each of the four second fixed blocks 716 is fixedly connected to a guide rod 717. The inner arc surfaces of the lower fixed blocks 715 and the upper fixed blocks 709 are covered with neoprene rubber buffer pads to increase friction and prevent damage to the pipe wall. The guide rod 717 slides with the first fixed seat 710 (guide sleeve structure) to ensure that the upper fixed block 709 rises and falls vertically and to prevent clamping skew caused by the uneven load of the second electric telescopic rod 704. The length of the guide rod 717 is adapted to the stroke of the second electric telescopic rod 704 to ensure that the upper fixed block 709 completely covers the outer wall of the pipe.

[0028] In this embodiment, a fixing strip 706 is fixedly connected to the bottom surface of the movable plate 705. A T-shaped groove 707 is provided on the bottom surface of the fixing strip 706. T-shaped sliders 708 are slidably connected to both the front and rear sides of the T-shaped groove 707. Upper fixing blocks 709 are fixedly connected to the bottom of each of the two T-shaped sliders 708. First fixing seats 710 are connected to the left and right sides of the two upper fixing blocks 709 via guide rails. The four first fixing seats 710 are slidably connected to four guide rods 717 respectively via guide sleeves. The upper fixing blocks 709 are connected to the T-shaped groove 707 of the fixing strip 706 via the T-shaped sliders 708, allowing for synchronous back-and-forth fine adjustment with the lower fixing block 715 to adapt to the clamping requirements of different pipe diameters.

[0029] In this embodiment, a servo motor 718 for driving the bidirectional threaded rod 713 to rotate is fixedly installed on the side of the mounting base 711. The servo motor 718 has a built-in torque sensor and can automatically stop when the clamping force reaches the set value, which avoids damage to the pipe due to excessive clamping force and also ensures the reliability of clamping, so that the pipe will not move during the processing.

[0030] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0031] Working principle: Place the HVAC pipe to be connected on the left side on the left support block 3, with one end of the pipe extending between the lower fixing blocks 715 of the left docking assembly 7; place the HVAC pipe on the right side on the right support block 3, with one end of the pipe extending between the lower fixing blocks 715 of the right docking assembly 7. The spring telescopic rod 2 can extend and retract slightly according to the weight of the pipe to keep the pipe horizontal. Start the servo motor 718 of the left docking assembly 7, and its output end drives the bidirectional threaded rod 713 in the mounting base 711 to rotate. Since the front and rear threads of the bidirectional threaded rod 713 are opposite, the two moving blocks 714 slide towards each other along the limiting rod 712. The movement causes the lower fixing block 715 to close, initially clamping the left pipe. Similarly, the right docking assembly 7 is operated to clamp the right pipe. The first electric telescopic rod 6 on the base plate 1 is activated, and its output end pushes the right docking assembly 7 to slide to the left along the moving guide rail 5 until the ends of the two pipes are nearly aligned (this can be determined with the aid of a visual sensor or scale markings). At this time, the left docking assembly 7 remains fixed, and the sliding of the right assembly achieves precise adjustment of the axial position of the pipe. If there is a slight height deviation in the pipe, it can be adaptively adjusted by the elastic deformation of the spring telescopic rod 2. The support block 3 ensures that the pipes are aligned during the docking process. Without sagging, the second electric telescopic rod 704 in the docking assembly 7 is activated. Its output end pushes the moving plate 705 to slide downward along the support rod 702. The fixing strip 706 at the bottom of the moving plate 705 drives the upper fixing block 709 to descend synchronously. During the descent of the upper fixing block 709, the first fixing seats 710 on the front and rear sides slide along the guide rod 717 to ensure that the upper fixing block 709 remains horizontal. At the same time, the position of the upper fixing block 709 can be finely adjusted by the T-shaped slider 708 along the T-shaped groove 707 of the fixing strip 706, so that the arc-shaped inner wall is completely in contact with the outer wall of the pipe. When the upper fixing block 709 and the lower fixing block 715 are aligned... After the pipes are clamped together, the second electric telescopic rod 704 stops moving. At this time, the pipes are firmly fixed in the docking assembly 7, and the ends are completely aligned. The operator can perform welding, flange connection, or sealing ring sealing at the aligned pipe ends to complete the fixed connection of the HVAC pipes. After the connection is completed, the second electric telescopic rod 704 is started in reverse to drive the upper fixing block 709 to rise and reset; the servo motor 718 is started in reverse to drive the lower fixing block 715 to separate; the first electric telescopic rod 6 is started in reverse to drive the right docking assembly 7 to slide to the right, releasing the constraint on the pipes, and the connected pipes can be moved away as a whole.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection device for HVAC pipes in HVAC engineering, characterized in that: The base plate (1) includes two spring telescopic rods (2) fixedly connected to the left and right sides of the upper surface of the base plate (1). Support blocks (3) are fixedly connected above the spring telescopic rods (2) on both sides. A pad (4) is fixedly connected to the right side of the left spring telescopic rod (2) on the upper surface of the base plate (1). Two moving guide rails (5) are fixedly connected to the right side of the pad (4) on the upper surface of the base plate (1). A docking assembly (7) is provided above the pad (4) on the left and above the moving guide rail (5) on the right. The bottom of the docking assembly (7) on the left is fixedly connected to the top of the pad (4) by welding. The bottom of the docking assembly (7) on the right is slidably connected to the moving guide rail (5) by a sliding block. A first electric telescopic rod (6) is fixedly connected to the middle right side of the upper surface of the base plate (1). The output end of the first electric telescopic rod (6) is connected to the bottom guide rail of the docking assembly (7) on the right through a connector.

2. A connection device for HVAC pipes in HVAC engineering according to claim 1, characterized in that: The docking assembly (7) includes a fixing plate (701), and support rods (702) are fixedly connected to the front and rear sides of the fixing plate (701). A connecting plate (703) is fixedly connected to the top of the two support rods (702).

3. A connection device for HVAC pipes in HVAC engineering according to claim 2, characterized in that: A second electric telescopic rod (704) is fixedly connected to the upper center of the connecting plate (703). The output end of the second electric telescopic rod (704) passes through the bottom surface of the connecting plate (703) and is fixedly connected to a movable plate (705). The front and rear ends of the movable plate (705) are slidably connected to two support rods (702) through guide sleeves.

4. A connection device for HVAC pipes in HVAC engineering according to claim 2, characterized in that: A mounting base (711) is fixedly connected to the upper surface of the fixed plate (701) between two support rods (702). A limiting rod (712) is fixedly connected to the front side inside the mounting base (711). A bidirectional threaded rod (713) is rotatably connected to the rear side inside the mounting base (711). Moving blocks (714) are threadedly connected to the outer surfaces of the front and rear sides of the bidirectional threaded rod (713). The front sides of the two moving blocks (714) are slidably connected to the limiting rod (712).

5. A connection device for HVAC pipes in HVAC engineering according to claim 4, characterized in that: Each of the two movable blocks (714) is fixedly connected to a lower fixed block (715) with an inner arc shape. Each of the two lower fixed blocks (715) is fixedly connected to a second fixed seat (716) on the left and right sides. Each of the four second fixed seats (716) is fixedly connected to a guide rod (717).

6. A connection device for HVAC pipes in HVAC engineering according to claim 3, characterized in that: The bottom surface of the movable plate (705) is fixedly connected to a fixing strip (706), and the bottom surface of the fixing strip (706) is provided with a T-shaped groove (707). T-shaped sliders (708) are slidably connected to the front and rear sides of the T-shaped groove (707). The bottom of the two T-shaped sliders (708) is fixedly connected to an upper fixing block (709). The left and right sides of the two upper fixing blocks (709) are connected to a first fixing seat (710) by a guide rail. The four first fixing seats (710) are slidably connected to four guide rods (717) respectively through guide sleeves.

7. A connection device for HVAC pipes in HVAC engineering according to claim 4, characterized in that: A servo motor (718) for driving the bidirectional threaded rod (713) to rotate is fixedly mounted on the side of the mounting base (711).

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