Pipe clamping device

Abstract

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning installation technology, specifically a pipe clamping device. Background Technology

[0002] During the installation of commercial air conditioning units, frequent pipe cutting and adjustments are required when connecting the indoor and outdoor units to accommodate different installation needs. Clamps are typically used to secure the pipes during this process to ensure accuracy and safety.

[0003] However, existing clamps offer only a single fixing method, clamping only in the horizontal direction, which cannot meet the needs of different installation scenarios. For pipelines with larger diameters, existing clamps struggle to achieve effective fixing, resulting in certain limitations in their applicability in practical applications.

[0004] In summary, existing clamps suffer from problems such as limited fixing methods and ineffective fixation of pipes with larger diameters, severely impacting the efficiency and quality of commercial air conditioning unit installation. Therefore, a new, flexible, and widely applicable clamp is urgently needed to solve these problems and improve installation efficiency and quality. Utility Model Content

[0005] In order to solve the technical problem that the clamps in the prior art can only clamp in the horizontal direction, this utility model proposes a tube clamping device.

[0006] The technical solution adopted in this utility model is:

[0007] This utility model proposes a tube clamping device, comprising:

[0008] The support is provided with a clamping groove, the width of which gradually decreases from the opening to the bottom and is adjustable, for placing pipes;

[0009] A pressure rod assembly is movably mounted on the support, and a pressure block is provided on it. The pressure rod assembly can be adjusted and fixed to the position where the pressure block presses the pipe in the clamping groove from the vertical direction.

[0010] Preferably, the pressure bar assembly is rotatably mounted on the support.

[0011] Furthermore, the pressure bar assembly includes:

[0012] The pressure rod is rotatably mounted on the support.

[0013] The pressure block is installed at one end of the pressure rod;

[0014] A fixing element is installed at the other end of the pressure rod and can abut against the support to fix the position of the pressure rod.

[0015] Furthermore, the other end of the pressure rod is provided with a threaded through hole, and the fixing member is a threaded rod that is threadedly connected to the threaded through hole. After the threaded rod is turned to pass through the threaded through hole, it can abut against the fixing member.

[0016] Furthermore, the pressure block is a bent plate with an obtuse angle.

[0017] Furthermore, the pivot point of the pressure rod assembly is located away from the end where the pressure block is located.

[0018] Furthermore, the width from the opening to the bottom of the clamping groove gradually decreases.

[0019] Furthermore, the support includes: a base plate and side plates disposed on opposite sides of the base plate; the upper edges of the two side plates are provided with a notch with a first inclined edge, and a slider that can be adjusted and fixed between the two side plates is provided. A second inclined edge is provided on the side of the slider that is directly opposite the first inclined edge, and the area between the first inclined edge and the second inclined edge is the clamping groove.

[0020] Furthermore, the base plate is provided with a waist-shaped hole corresponding to the slidable position of the slider, and the slider is fixed in position by bolts passing through the waist-shaped hole.

[0021] Preferably, the support is formed by sheet metal punching and bending.

[0022] Furthermore, the bottom of the support is provided with a support plate for fixing the support, and the support plate is provided with connecting holes.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. This device achieves a dual fixing effect through the synergistic action of the tapered clamping groove and the adjustable clamping mechanism of the pressure bar assembly: on the one hand, the inclined design of the clamping groove utilizes the pipe's own weight and lateral friction to achieve initial fixing; on the other hand, the pressure block further constrains the axial and radial displacement of the pipe through vertical pressure. The adjustment range of the pressure bar assembly can be expanded according to actual working conditions, making it suitable for pipe clamping needs in various scenarios such as laboratories and industrial production lines.

[0025] 2. The size of the clamping groove can be adjusted by adjusting the overlapping area between the slider and the notch to accommodate pipes of different diameters.

[0026] 3. Made of commonly used lightweight sheet metal, it is easier to maintain than the original cast iron pipe clamps, has a lower weight, and can be disassembled and installed manually, making it flexible to use. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0028] Figure 1 This is a simplified diagram of a clamping structure in the prior art;

[0029] Figure 2 This is a schematic diagram of the closed clamping groove structure in an embodiment of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the clamping groove opening in an embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure for clamping the pipe in an embodiment of this utility model;

[0032] Figure 5 This is a side view of the pressure bar assembly in an embodiment of this utility model;

[0033] Figure 6 This is a top view of the pressure bar assembly in an embodiment of this utility model;

[0034] Figure 7 This is a side view of the support in an embodiment of this utility model;

[0035] Figure 8 This is a top view of the support in an embodiment of this utility model;

[0036] Figure 9 This is a side view of the slider in an embodiment of this utility model;

[0037] Figure 10 This is a top view of the slider in an embodiment of this utility model;

[0038] 1. Support;

[0039] 11. Base plate; 12. Side plate; 13. Notch; 14. Slider; 17. Clamping groove; 18. Waist-shaped hole; 19. Support plate; 20. Connecting hole;

[0040] 2. Compression rod assembly; 21. Compression rod; 22. Compression block; 23. Fixing component; 24. Threaded post;

[0041] 3. Pipes. Detailed Implementation

[0042] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0044] like Figure 1 As shown, pipe 3 is clamped on both sides in the horizontal direction to hold it. However, this method of fixing is limited to the horizontal direction and cannot meet the needs of different installation scenarios. For pipes with larger diameters, the existing clamps are difficult to use effectively, resulting in certain limitations in practical applications.

[0045] In this regard, such as Figures 1 to 3 As shown, this utility model proposes a pipe clamping device, including: a support 1 and a pressure rod assembly 2. The support 1 has a clamping groove 17 at its top. The cross-section of the clamping groove 17 is V-shaped or trapezoidal, and the width gradually decreases from the groove opening to the bottom, forming an adaptive clamping surface. Simultaneously, the overall width is adjustable to accommodate pipes of different diameters. When the pipe 3 is placed in the clamping groove 17, its outer wall contacts the inclined surface of the clamping groove 17. The initial positioning and self-centering functions of the pipe are achieved through the inclination angles on both sides of the groove.

[0046] The pressure rod assembly 2 is movably mounted on the support 1 via a hinge or slide rail structure, and a pressure block 22 is provided at its end. The height and angle of the pressure rod assembly 2 can be adjusted vertically or inclined, and it is fixed in the target position by locking bolts, buckles, or threaded knobs, so that the pressure block 22 applies pressure to the pipe in the clamping groove 17 in the vertical direction. By adjusting the angle of the pressure rod assembly 2 and the height of the pressure block 22, it can adapt to the clamping requirements of different pipe diameters and materials (such as hoses and metal pipes), ensuring that the pipe is stable and without displacement in the clamping groove 17.

[0047] This device achieves a dual fixing effect through the synergistic action of the tapered clamping groove and the adjustable clamping mechanism of the pressure bar assembly: on the one hand, the inclined design of the clamping groove utilizes the pipe's own weight and lateral friction to achieve initial fixation; on the other hand, the pressure block further constrains the axial and radial displacement of the pipe through vertical pressure. The adjustment range of the pressure bar assembly can be expanded according to actual working conditions, making it suitable for pipe clamping needs in various scenarios such as laboratories and industrial production lines.

[0048] In a preferred embodiment, the pressure bar assembly is rotatably mounted on the side wall or top of the support via a hinge shaft or a rotating mechanism. The axis of the hinge shaft is parallel or perpendicular to the extension direction of the clamping groove, allowing the pressure bar assembly to rotate around the axis and adjust the tilt angle of the pressure block relative to the clamping groove. When the pressure bar assembly is rotated to the target angle, its position can be fixed by locking bolts, a ratchet mechanism, or a damping shaft to ensure stable vertical pressure of the pressure block 22 on the pipeline.

[0049] The hinge shaft and clamping groove design simplify the operation process, achieving an integrated "rotation-positioning-clamping" action. Furthermore, by rotating to adjust the area of ​​the pressure block in contact with the pipe, the service life of the pressure block can be extended and localized wear reduced.

[0050] In specific embodiments, such as Figure 4 , 5 As shown in Figure 6, the pressure rod assembly 2 specifically includes a pressure rod 21, a pressure block 22, and a fixing member 23. Specifically: the pressure rod 21 is rotatably mounted on the side wall or top edge of the support 1 via a hinge shaft or bearing structure, and its rotation axis is perpendicular to the extension direction of the clamping groove 17, allowing the pressure rod 21 to swing around its axis in the horizontal plane; the pressure block 22 is installed on the end of the pressure rod 21 near the clamping groove 17 via bolts, slots, or quick-release interfaces, and its bottom surface in contact with the pipe is a flat or arc-shaped concave surface to accommodate the pressing requirements of pipes of different shapes; the fixing member 23 is located at the end of the pressure rod 21 away from the pressure block 22, and can specifically be a threaded knob. When the pressure rod 21 rotates to the target angle, the fixing member 23 locks the pressure rod 21 in its current position by abutting or engaging with the surface of the support 1 (e.g., a knob pressing against the side wall of the support 1), preventing the pressure rod 21 from rebounding due to external force or vibration.

[0051] After the pressure rod 21 swings to the target angle, the tightening of the fixing part 23 creates frictional resistance or mechanical interlock with the support 1, forming a stable lever-type clamping force. During the rotation of the pressure rod 21, the pressure block 22 automatically adjusts its contact area with the pipeline according to the angle change of the pressure rod 21, ensuring uniform pressure distribution. After releasing the fixing part 23, the pressure rod 21 can freely return to its initial open state, facilitating quick loading and unloading of the pipeline. In addition, the lever principle design of the pressure rod 21 significantly reduces the external force required for operation, and achieves "small stroke adjustment - large pressure output" through the mechanical force amplification of the fixing part 23. The abutment locking method between the fixing part 23 and the support 1 avoids the installation complexity of traditional bolt-through connections, improving adjustment efficiency. The linear correlation between the swing angle of the pressure rod 21 and the locking force of the fixing part 23 allows the operator to intuitively control the clamping strength.

[0052] Specifically, the end of the pressure rod 21 furthest from the pressure block 22 has a threaded through hole extending through its thickness (or it can be in the form of an installed or welded threaded post 24 with a threaded through hole, the pressure rod being a strip-shaped plate with vertical bending resistance), the axis of the threaded through hole being perpendicular to the swing plane of the pressure rod 21. The fixing member 23 is a threaded rod adapted to the threaded through hole, its external thread specification matching the internal thread of the threaded through hole (e.g., metric thread, pipe thread). One end of the threaded rod has a knob or handle, and the other end is a flat or hemispherical abutment end.

[0053] After the pressure rod 21 is rotated to the target angle, the operator rotates the threaded rod to move it along the threaded through hole toward the support 1 until the abutting end of the threaded rod contacts the surface of the support 1 and generates a preload. By continuously tightening the threaded rod, the friction between the abutting end and the support 1 and the reverse support force create a self-locking effect, forcing the pressure rod 21 to remain in its current position and preventing it from swinging back, thereby achieving rigid fixation of the pressure rod 21.

[0054] The rotational motion of the threaded rod is converted into axial linear motion. The self-locking characteristic of the thread helix angle amplifies the small screwing torque into an axial abutment force. Moreover, the threaded connection provides high-precision linear displacement control to meet the requirements of high-precision clamping and positioning. The self-locking characteristic of the threaded pair ensures long-term stability of the clamping state and can resist vibration interference without the need for additional anti-loosening devices.

[0055] Specifically, the pressure block 22 is a bent plate made of metal with a rough-ground surface to increase friction. Its cross-section is V-shaped or U-shaped. Taking the V-shape as an example, the inner angle at the bend is an obtuse angle (preferably 110°-130°, for example, 120°). The two side walls of the bent plate extend from the apex of the obtuse angle to the distal end, forming an inclined force-applying surface that contacts the outer wall of the pipe. The extension direction of the inclined force-applying surface is parallel to or at a preset angle to the inclined surface of the clamping groove 17.

[0056] The multi-directional force application characteristics of the obtuse-angle bending plate significantly reduce the risk of single-point pressure on the pipeline, making it particularly suitable for easily deformable pipes such as thin-walled pipes and flexible hoses. Compared with the traditional point-contact clamping method, the friction is increased. Specifically, the bending plate is divided into a clamping section that is parallel to and fits against the pressure bar and a bending section with an obtuse angle. For example, the bending section can be designed to be parallel to the inclined surface opposite to the clamping groove 17 or at a preset angle (the state after clamping). During clamping, the clamping section of the bending plate presses against the pipeline, and the bending section can play an auxiliary clamping role to improve friction and clamping force. In addition, the obtuse-angle bending structure also allows the pressure block 22 to expand elastically when clamping over-diameter pipes, thus expanding the compatible pipe diameter range.

[0057] Preferably, the rotation point of the pressure rod assembly 2 (i.e., the installation position of the hinge shaft or rotating mechanism) is located at the end of the pressure rod 21 away from the pressure block 22, forming a lever structure with the rotation point as the fulcrum, the pressure block 22 as the force application point, and the fixing member 23 as the resistance point. Specifically, in the total length of the pressure rod 21, the ratio of the distance from the rotation point to the end of the pressure block 22 to the distance from the rotation point to the end of the fixing member 23 is 3:1 to 5:1. Through the lever principle, the small displacement or force exerted by the operator on the end of the fixing member 23 is amplified into a significant downward pressure on the end of the pressure block 22. Moreover, the lever structure allows the actual clamping force to reach 3-5 times the manual operating force, significantly reducing the manpower required for high-intensity clamping operations.

[0058] In other embodiments, the pressure rod 21 may be provided with reinforcing ribs or thickened parts near the rotation point to resist the bending moment generated by the lever action and avoid deformation of the pressure rod 21 during long-term use.

[0059] Specifically, such as Figure 7 , 8 As shown in Figure 9, the support 1 includes: a base plate 11 and side plates 12 symmetrically arranged on both sides of the base plate 11. The upper edges of the two side plates 12 are machined with opposing right-angled trapezoidal notches 13, each notch 13 consisting of a horizontal bottom edge, a vertical inner edge, and a first inclined edge. A sliding slider 14 is provided between the two side plates 12. The side of the slider 14 facing the first inclined edge of the notch 13 has a second inclined edge, and the inclination direction of the second inclined edge is opposite to that of the first inclined edge. Together, they form an inverted V-shaped symmetrical inclined surface, causing the width of the clamping groove 17 to gradually decrease from the top to the bottom. The first inclined edge (side of the notch 13 on the side plate 12) and the second inclined edge (side of the slider 14) are symmetrically arranged to form a clamping channel.

[0060] In addition, a first inclined plate can be connected between the first inclined edges of the two side plates 12, facing the second inclined surface corresponding to the second inclined edge of the slider 14, for clamping the pipe.

[0061] In practical use, the slider 14 can be slid to make the slider 14 partially overlap with the notch 13. By adjusting the size of the overlapping area between the slider 14 and the notch 13, the size of the clamping groove 17 can be adjusted to suit pipes of different diameters.

[0062] After the pipe is placed into the clamping groove 17, the symmetrical inclined sides on both sides apply a resultant force towards the bottom of the groove simultaneously, forcing the pipe to automatically center itself; the width of the groove opening decreases linearly from top to bottom, and when the pipe is under pressure, the contact area expands from the groove opening to the bottom of the groove, and the pressure gradient distribution avoids sudden stress changes; the tapering structure makes the normal pressure generated by the inclined side increase with the increase of displacement when the pipe is subjected to axial tension, forming a self-locking effect.

[0063] Furthermore, a slotted hole 18 is provided on the base plate 11 along the sliding direction of the slider 14. The length of the slotted hole 18 can be set to 1.2-1.5 times the maximum adjustment stroke of the slider 14, and the width matches the diameter of the fixing bolt (e.g., a Φ6mm hole is suitable for an M6 bolt). The bottom of the slider 14 is provided with a through hole corresponding to the slotted hole 18. After the fixing bolt passes through the slotted hole 18 and the through hole of the slider 14, it is connected by a nut 141 (e.g., ...). Figure 10 (As shown), the slider 14 is rigidly fixed to the base plate 11 by tightening the elastic washer or anti-loosening nut. The long axis of the oblong hole 18 is parallel to the sliding direction of the slider 14, allowing the slider 14 to be continuously and steplessly adjusted within the length of the hole, thus improving the adjustment accuracy. When the bolt is loosened, the slider 14 can slide freely along the oblong hole 18 to the target position. After tightening, the bolt forms a surface contact friction lock with the side wall of the oblong hole 18.

[0064] Preferably, a scale (accuracy ±1mm) can be machined on the edge of the waist-shaped hole 18 to mark the correspondence between the displacement of the slider 14 and the width of the clamping groove 17.

[0065] Preferably, the support 1 is manufactured using a sheet metal punching and bending integrated forming process, specifically using galvanized steel sheet, stainless steel sheet, or aluminum alloy sheet as the base material; then, a CNC punching machine punches out the unfolded outline of the base plate 11 and the two side plates 12 in one go on the sheet metal, and simultaneously processes the waist-shaped hole 18, bolt hole, and right-angled trapezoidal notch 13, etc.; then, a bending machine is used to bend the unfolded plate along the preset bending line, so that the base plate 11 and the two side plates 12 form a perpendicular or inclined angle, and the right-angled trapezoidal notch 13 on the side plate 12 is formed simultaneously in the first bending process. In addition, reinforcing ribs can be added to the sheet metal bending structure in key stress areas (such as the connection between the side plate 12 and the base plate 11) to achieve weight reduction while maintaining load-bearing strength.

[0066] By employing a punching and bending process, the bearings can be mass-produced quickly. Moreover, the closed cross-section structure formed by bending gives the bearings high compressive strength, while significantly reducing their weight compared to traditional cast iron forms.

[0067] In a preferred embodiment, the bottom of the support 1 is provided with a support plate 19 for fixing the support 1, and the support plate 19 is provided with a connecting hole 20. Specifically, the support plate 19 is L-shaped, and the upper part is fixed to the bottom of the support 1 by welding. In use, the support plate 19 is used to clamp onto the workbench, and then bolts are tightened to fix the clamping device. This facilitates quick disassembly and movement when installing multiple units, improving work efficiency.

[0068] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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 the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0069] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pinch device, characterized in that, The utility model relates to a pipe pressing device, which comprises: a support provided with a clamping groove with adjustable width for placing a pipe; a pressing rod assembly movably mounted on the support and provided with a pressing block, the pressing rod assembly being adjustable and fixed to the pressing block to press the pipe in the clamping groove from a vertical direction.

2. The pinch valve of claim 1, wherein, The pressing rod assembly is rotatably mounted on the support.

3. The pinch valve of claim 1, wherein, The pressing rod assembly comprises: a pressing rod rotatably mounted on the support; the pressing block mounted on one end of the pressing rod; a fixing member mounted on the other end of the pressing rod and abutting against the support to fix the position of the pressing rod.

4. The pinch valve of claim 3, wherein, The other end of the pressing rod is provided with a threaded through hole, and the fixing member is a threaded rod screwed with the threaded through hole, which can abut against the fixing member after being screwed through the threaded through hole.

5. The pinch valve of claim 1, wherein, The pressing block is a bent plate with an obtuse angle.

6. The pinch valve of any one of claims 2 to 3, wherein, The rotation pivot of the pressing rod assembly is away from the end provided with the pressing block.

7. The pinch valve of claim 1, wherein The width of the groove mouth to the groove bottom of the clamping groove gradually decreases.

8. The pinch valve of claim 7, wherein, The support comprises a bottom plate, side plates provided on opposite sides of the bottom plate, notches with first inclined edges provided at positions where the upper edges of the two side plates face each other, sliding blocks with adjustable and fixed positions provided between the two side plates, second inclined edges provided on the side of the sliding blocks facing the first inclined edges, and the area between the first inclined edges and the second inclined edges being the clamping groove.

9. The pinch valve of claim 8, wherein, The bottom plate is provided with a waist-shaped hole corresponding to the slidable position of the sliding block, and the sliding block is fixed in position by a bolt passing through the waist-shaped hole.

10. The pinch valve of claim 1, wherein, The support is formed by punching and bending sheet metal.

11. The pinch valve of claim 1, wherein, The bottom of the support is provided with a support plate for fixing the support, and the support plate is provided with a connecting hole.

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