Rail transit pipeline installation eccentric adjustable pipe clamp structure

Abstract

The application relates to the technical field of rail transit pipeline installation, and discloses a rail transit pipeline installation eccentricity-adjustable pipe clamp structure which comprises detachably connected upper and lower shelf plates, an eccentric sleeve is arranged between the upper and lower shelf plates, and a locking module for stably rotating and limiting the eccentric sleeve is arranged in the upper shelf plate. The rail transit pipeline installation eccentricity-adjustable pipe clamp structure is provided with the locking module, the worm and the worm ring are matched to realize the adjustment and self-locking of the rotating angle of the eccentric sleeve, the self-locking characteristics of the worm and the worm wheel can overcome the eccentric torque generated by the self-weight of the pipeline after the worm stops rotating, the unexpected rotation of the eccentric sleeve during the adjustment process is prevented, the sleeve ring is secondarily locked by embedding the clamping plate into the clamping groove, the sleeve ring can keep a stable adjustment posture under the double locking mechanism, the eccentric position is prevented from deviating after the adjustment is completed and before locking, and the adjustment precision and the installation efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit pipeline installation technology, specifically to an eccentric adjustable pipe clamp structure for rail transit pipeline installation. Background Technology

[0002] The piping systems of rail transit vehicles (such as braking lines, cooling lines, and air lines) are widely laid in the car body underframe, equipment compartment, and interior of the carriages. Due to the large length of the piping, torsional stress inevitably accumulates within the piping material during manufacturing, transportation, and storage, causing it to tend to coil along its own axis. When conventional fixed clamps are used for positioning and installation of the piping, the rigid constraint of the clamps forcibly suppresses the pipe's own torsional tendency, preventing the release of torsional stress within the pipe. This results in concentrated additional torsional stress at the clamping points. Pipes under this stress state for extended periods are highly susceptible to twisting deformation or even fatigue failure, severely shortening their service life.

[0003] Existing technologies have proposed pipe clamp structures using eccentric installation sleeves. These structures, through the circumferential rotation of the eccentric clamp core relative to the clamp body, allow for fine-tuning of the pipe installation angle and position to a certain extent. However, rail transit pipelines typically have significant weight. During eccentric adjustment, operators rely solely on manually pushing or rotating the eccentric clamp core. This presents challenges: firstly, overcoming the substantial rotational resistance caused by the pipeline's weight makes it difficult to accurately adjust the clamp core to the required compensation angle, resulting in inconsistent adjustment accuracy; secondly, the eccentric torque generated by the pipeline's weight continuously acts on the clamp core, causing unexpected slight rotations after adjustment but before locking. This leads to a shift in the adjusted eccentric position, often requiring repeated adjustments to barely meet installation requirements. Even then, maintaining a stable adjustment posture during locking remains difficult, ultimately affecting pipeline alignment accuracy and long-term operational reliability. Therefore, we propose an adjustable eccentric clamp structure for rail transit pipeline installation. Summary of the Invention

[0004] The purpose of this invention is to provide an eccentric adjustable pipe clamp structure for rail transit pipeline installation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an eccentric adjustable pipe clamp structure for rail transit pipeline installation, comprising a detachably connected upper frame plate and a lower frame plate, wherein an eccentric sleeve is provided between the upper frame plate and the lower frame plate, and a locking module for stabilizing and limiting the rotation of the eccentric sleeve is provided inside the upper frame plate;

[0006] The locking module includes a collar rotatably mounted on the inner wall of the upper shelf plate. A limit ring is coaxially fixedly mounted on the outer wall of the end of the collar. Limiting grooves that movably cooperate with the limit rings are opened on the inner walls of the upper and lower shelves. A worm gear ring is fixedly mounted on the outer surface of the collar. A worm is rotatably mounted on the inner wall of the upper shelf plate. Several slots are opened in a circumferential array on the outer surface of the collar. A locking plate is slidably mounted on the inner wall of the upper shelf plate. A pulling frame is fixedly connected to the end of the locking plate. A guide rod is fixedly mounted on the side wall of the pulling frame. A large spring is fixedly connected between the end of the guide rod and the inner wall of the upper shelf plate.

[0007] Preferably, there are two sets of lower shelves, which are detachably connected by bolts, and the combined structure of the two sets of lower shelves is mirror-distributed with the upper shelf.

[0008] Preferably, the number of the card slots is set to two sets, and the two sets of card slots are mirror images of each other on both sides of the worm gear ring, and the card plate is set to correspond to the card slot.

[0009] Preferably, the side wall of the upper frame plate is provided with a guide hole that slides with the guide rod, and the two ends of the large spring are respectively fixedly connected to the inner wall of the end of the guide hole and the outer wall of the end of the guide rod.

[0010] Preferably, the eccentric sleeve is provided with an anti-pull positioning module to limit the axial sliding of the rail transit pipeline. The anti-pull positioning module includes an installation hole opened inside the eccentric sleeve. Two sets of fixing rings are fixedly installed on the inner wall of the installation hole. Multiple sets of sliding rods are fixedly connected between the fixing rings. A contact ring is slidably installed through the outer wall of the sliding rod. Several arc-shaped strips are fixedly installed in a circumferential array on the inner arc surface of the contact ring. Multiple sets of abutting posts are fixedly installed on the side wall of the contact ring. A tightening rubber ring is fixedly installed on the inner wall of the end of the installation hole.

[0011] Preferably, the inner wall of the fixing ring is provided with a circular hole that matches the outer diameter of the abutment post, and the circular hole slides in conjunction with the abutment post.

[0012] Preferably, the inner arc surface of the gathering rubber ring is provided with multiple sets of abutting bands along the axial direction, and the cross-section of the abutting bands is V-shaped.

[0013] Preferably, the upper frame plate is further provided with a force-saving torsion module for quickly adjusting the rotation of the eccentric sleeve. The force-saving torsion module includes a driven gear coaxially fixedly installed on the outer wall of the worm gear. An installation plate is fixedly installed on the inner wall of the upper frame plate. A sliding sleeve is slidably connected to the outer wall of the installation plate. A small spring is fixedly connected between the end of the installation plate and the sliding sleeve. A driving gear is rotatably installed on the side wall of the sliding sleeve. A rotating wheel is coaxially fixedly connected to the driving gear.

[0014] Preferably, the driving gear is positioned directly above the driven gear, and the diameter ratio of the driving gear to the driven gear is 2:1.

[0015] Compared with the prior art, the present invention provides an eccentric adjustable pipe clamp structure for rail transit pipeline installation, which has the following advantages:

[0016] 1. This rail transit pipeline is equipped with an eccentric adjustable pipe clamp structure. By setting a locking module, the rotation angle of the eccentric sleeve is adjusted and self-locked by the cooperation of the worm gear and worm wheel ring. After the worm gear stops rotating, the eccentric torque generated by the self-locking characteristics of the worm wheel and worm gear can be overcome by the self-locking characteristics of the pipeline, preventing the eccentric sleeve from rotating unexpectedly during the adjustment process. At the same time, the clamp plate is embedded in the clamp slot to form a secondary lock, so that the collar maintains a stable adjustment posture under the double locking mechanism, avoiding the eccentric position from shifting after adjustment and before locking. This improves the adjustment accuracy and installation efficiency, and solves the problem that existing eccentric pipe clamps are difficult to maintain a stable adjustment posture under the influence of the pipeline's self-weight and require repeated adjustments.

[0017] 2. The rail transit pipeline is equipped with an eccentric adjustable pipe clamp structure. By setting an anti-pull positioning module, when the pipeline passes through the installation hole, the contact ring slides towards the tightening rubber ring under the action of friction. The clamping column pushes the tightening rubber ring to make it radially contract and hug the outer wall of the pipeline. When the pipeline is subjected to axial pulling force, the friction between the pipeline and the arc strip further increases, causing the contact ring to continue to slide towards the tightening rubber ring. The clamping force of the tightening rubber ring adaptively increases with the increase of the pulling force, realizing dynamic suppression of axial slippage of the pipeline. This solves the problem that the pipeline is prone to axial movement under long-term vibration or thermal expansion and contraction, which can lead to installation position deviation.

[0018] 3. The rail transit pipeline is equipped with an eccentric adjustable pipe clamp structure. By setting up a labor-saving torsion module, the operator presses the rotating wheel to engage the driving gear and driven gear, and then rotates the rotating wheel. The small rotational torque is amplified and transmitted to the worm gear through gear transmission, realizing labor-saving adjustment of the eccentric sleeve. After adjustment, the rotating wheel is released, and the small spring pushes the sliding sleeve to reset, causing the driving gear to automatically disengage, avoiding additional rotational resistance to the worm gear. This allows the operator to easily complete the eccentric adjustment without special tools, solving the problem of the large rotational resistance caused by the pipeline's own weight when the operator manually rotates the eccentric pipe clamp core. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the upper and lower shelf structures of the present invention;

[0021] Figure 3This is one of the schematic diagrams of the locking module structure of the present invention;

[0022] Figure 4 This is a second schematic diagram of the locking module structure of the present invention;

[0023] Figure 5 This is a cross-sectional view of the eccentric sleeve of the present invention;

[0024] Figure 6 This is a schematic diagram of the anti-pull positioning module structure of the present invention;

[0025] Figure 7 This is a cross-sectional view of the retractable rubber ring of the present invention;

[0026] Figure 8 This is a schematic diagram of the force-saving torsion module structure of the present invention.

[0027] In the diagram: 1. Upper frame plate; 2. Lower frame plate; 3. Eccentric sleeve; 4. Locking module; 41. Collar ring; 42. Worm gear ring; 43. Worm; 44. Slot; 45. Clamping plate; 46. Pulling frame; 47. Guide rod; 48. Large spring; 49. Limiting groove; 410. Limiting ring; 5. Anti-pull positioning module; 51. Mounting hole; 52. Fixing ring; 53. Slide rod; 54. Contact ring; 55. Arc strip; 56. Anchoring column; 57. Gathering rubber ring; 58. Anchoring band; 6. Force-saving torsion module; 61. Driven gear; 62. Mounting plate; 63. Slide sleeve; 64. Small spring; 65. Driving gear; 66. Rotating wheel. Detailed Implementation

[0028] like Figures 1-8 As shown, the present invention provides a technical solution: an eccentric adjustable pipe clamp structure for rail transit pipeline installation, including a detachably connected upper frame plate 1 and a lower frame plate 2, an eccentric sleeve 3 is provided between the upper frame plate 1 and the lower frame plate 2, and a locking module 4 for stabilizing and limiting the rotation of the eccentric sleeve 3 is provided inside the upper frame plate 1.

[0029] The locking module 4 includes a collar 41 rotatably mounted on the inner wall of the upper frame plate 1. A limit ring 410 is coaxially fixedly mounted on the outer wall of the end of the collar 41. Limiting grooves 49 that movably cooperate with the limit ring 410 are opened on the inner walls of the upper frame plate 1 and the lower frame plate 2. A worm gear ring 42 is fixedly mounted on the outer surface of the collar 41. A worm gear 43 is rotatably mounted on the inner wall of the upper frame plate 1. Several slots 44 are opened in a circumferential array on the outer surface of the collar 41. A locking plate 45 is slidably mounted on the inner wall of the upper frame plate 1. A pulling frame 46 is fixedly connected to the end of the locking plate 45. A guide rod 47 is fixedly mounted on the side wall of the pulling frame 46. A large spring 48 is fixedly connected between the end of the guide rod 47 and the inner wall of the upper frame plate 1.

[0030] The collar 41 can rotate freely relative to the upper frame plate 1, thereby driving the eccentric sleeve 3 fixedly connected to it to rotate synchronously, realizing continuous adjustment of the eccentricity of the pipeline center. The limiting ring 410 is in active cooperation with the limiting groove 49 opened on the inner wall of the upper frame plate 1 and the lower frame plate 2. The limiting ring 410 slides in the limiting groove 49 to constrain the axial displacement of the collar 41, ensuring that the collar 41 can only rotate circumferentially and cannot move axially, thus ensuring the positional stability of the collar 41 during the eccentric adjustment process. The worm 43 and the worm wheel ring 42 form a transmission pair. Utilizing the self-locking characteristic of the transmission between the two, when the worm 43 stops rotating, the worm wheel ring 42 and the collar 41 are locked at the current rotation angle, which can overcome the eccentric torque generated by the pipeline's own weight and prevent the eccentric sleeve 3 from rotating unexpectedly after the adjustment is completed.

[0031] The elastic force of the large spring 48 pulls the guide rod 47, which in turn drives the pull frame 46 and the locking plate 45 to slide closer to the collar 41, so that the locking plate 45 is embedded in the locking groove 44, forming a secondary lock on the rotational degree of freedom of the collar 41. This, together with the self-locking of the worm ring 42 and the worm 43, forms a double locking mechanism, further ensuring the stability of the adjusted posture.

[0032] There are two sets of lower shelf plates 2, which are detachably connected by bolts. The combined body of the two sets of lower shelf plates 2 is distributed in a mirror image of the upper shelf plate 1.

[0033] This design allows for the placement of the two lower support plates 2 on either side of the pipeline before installation, reducing the difficulty of pipe threading and assembly on site. The combined structure of the two lower support plates 2 is mirror-image of the upper support plate 1 in the vertical direction. When the upper support plate 1 and the lower support plate 2 are tightened with bolts, they together form a complete circular installation cavity, which provides full-circumferential enclosure and constraint for the collar 41 and the eccentric sleeve 3. This ensures that the eccentric sleeve 3 receives uniform support force within the circular installation cavity, preventing the eccentric sleeve 3 from tilting or jamming due to uneven force on one side.

[0034] There are two sets of slots 44, which are mirror images of each other on both sides of the worm gear ring 42, and the card plate 45 is set in correspondence with the slots 44.

[0035] One set of slots 44 is located on one axial side of the worm gear ring 42, and another set of slots 44 is located on the other axial side of the worm gear ring 42. The locking plates 45 are correspondingly arranged with the slots 44. That is, two sets of locking plates 45 are slidably installed in the upper frame plate 1, respectively opposite to the two sets of slots 44. When the two sets of locking plates 45 are simultaneously embedded in the corresponding slots 44, both sides of the collar 41 are simultaneously subjected to circumferential locking force. Compared with single-sided locking, double-sided locking can make the braking torque borne by the collar 41 symmetrically distributed, avoiding the bias torque generated by single-sided locking from causing additional bending load on the collar 41, and improving the reliability and stability of locking.

[0036] The side wall of the upper plate 1 is provided with a guide hole that slides with the guide rod 47. The two ends of the large spring 48 are fixedly connected to the inner wall of the end of the guide hole and the outer wall of the end of the guide rod 47, respectively.

[0037] The guide hole provides a straight guide channel for the guide rod 47, restricting the guide rod 47 to slide only along its axial direction and preventing it from deflecting, ensuring that the movement trajectory of the clamping plate 45 is accurately aligned with the clamping slot 44, and ensuring that the clamping plate 45 is accurately embedded in the clamping slot 44. The two ends of the large spring 48 are fixedly connected to the inner wall of the end of the guide hole and the outer wall of the end of the guide rod 47, respectively. When the pulling frame 46 is pulled outward, the guide rod 47 compresses the large spring 48 to store energy. After the pulling frame 46 is released, the large spring 48 releases its elastic potential energy, pushing the guide rod 47 and the pulling frame 46 to automatically reset, and causing the clamping plate 45 to automatically slide into the clamping slot 44 to achieve automatic locking.

[0038] Please see Figures 5-7 The eccentric sleeve 3 is equipped with an anti-pull positioning module 5 to limit the axial sliding of the rail transit pipeline. The anti-pull positioning module 5 includes an installation hole 51 opened inside the eccentric sleeve 3. Two sets of fixing rings 52 are fixedly installed on the inner wall of the installation hole 51. Multiple sets of sliding rods 53 are fixedly connected between the fixing rings 52. A contact ring 54 is slidably installed through the outer wall of the sliding rod 53. Several arc-shaped strips 55 are fixedly installed in a circumferential array on the inner arc surface of the contact ring 54. Multiple sets of abutting posts 56 are fixedly installed on the side wall of the contact ring 54. A tightening rubber ring 57 is fixedly installed on the inner wall of the end of the installation hole 51.

[0039] Mounting hole 51 is used to accommodate pipe passage. Two sets of fixing rings 52 are spaced apart along the axial direction of eccentric sleeve 3 inside mounting hole 51. The fixing rings 52 serve as support bases for sliding rods 53. Multiple sets of sliding rods 53 are fixedly connected between the two sets of fixing rings 52. The sliding rods 53 are arranged parallel to the axial direction of eccentric sleeve 3. Contact ring 54 passes through and is slidably mounted on the outer wall of sliding rod 53. The sliding rod 53 guides the sliding of contact ring 54, allowing contact ring 54 to slide only axially and preventing circumferential deflection. Several arc-shaped strips 55 are fixedly mounted in a circumferential array on the inner arc surface of contact ring 54. The arc-shaped strips 55 form multiple points of contact with the outer wall of the pipe, increasing the friction between contact ring 54 and pipe. Multiple sets of abutment are fixedly mounted on the side wall of contact ring 54. The column 56 and the clamping column 56 move axially synchronously with the contact ring 54. A retaining rubber ring 57 is fixedly installed on the inner wall of the end of the mounting hole 51. When the contact ring 54 slides towards the retaining rubber ring 57 under the friction force when the pipeline is inserted, the clamping column 56 moves accordingly and pushes against the retaining rubber ring 57, causing the retaining rubber ring 57 to radially contract and tighten the pipeline. When the pipeline is subjected to axial pulling force, the friction between the pipeline and the arc strip 55 increases, causing the contact ring 54 to slide further towards the retaining rubber ring 57, increasing the pushing force of the clamping column 56 on the retaining rubber ring 57, and thus strengthening the clamping force of the retaining rubber ring 57. This achieves adaptive anti-pull limit for the axial sliding of the pipeline, preventing the pipeline from axially moving due to vibration or thermal expansion and contraction.

[0040] The inner wall of the fixing ring 52 is provided with a circular hole that matches the outer diameter of the abutment post 56, and the circular hole slides in fit with the abutment post 56.

[0041] The inner wall of the fixing ring 52 has a circular hole that matches the outer diameter of the clamping post 56. The circular hole penetrates the wall thickness of the fixing ring 52. The clamping post 56 is slidably fitted in the circular hole. The circular hole constrains the sliding direction of the clamping post 56, so that the clamping post 56 maintains axial translation and cannot be radially deflected. This ensures that the end of the clamping post 56 is always aligned with the outer wall of the retractable rubber ring 57. At the same time, the fixing ring 52 provides sliding support for the clamping post 56 through the circular hole, so that the clamping post 56 can move smoothly along the axial direction when it is pushed by the contact ring 54. This prevents the clamping post 56 from bending or jamming due to uneven force, and ensures that the clamping post 56 efficiently transmits the thrust to the retractable rubber ring 57.

[0042] The inner arc surface of the constricting ring 57 has multiple sets of abutting bands 58 distributed along the axial direction, and the cross section of the abutting band 58 is V-shaped.

[0043] The inner arc surface of the constricting rubber ring 57 is axially distributed with multiple sets of clamping bands 58. These multiple sets of clamping bands 58 are arranged at intervals along the axial direction of the constricting rubber ring 57. The cross-section of the clamping band 58 is V-shaped, and the V-shaped clamping band 58 has the ability to elastically deform in the radial direction. When the constricting rubber ring 57 is radially pushed by the clamping column 56, the V-shaped tip of the clamping band 58 preferentially contacts the outer wall of the pipeline and undergoes elastic compression deformation, concentrating the pushing force on the pipeline surface. Under the same pushing force, it generates greater contact pressure and friction. At the same time, the multiple sets of clamping bands 58 distributed along the axial direction form multiple annular contact bands on the outer wall of the pipeline. Compared with single contact, multiple contact bands can provide greater total friction, further enhancing the axial anti-pull capability of the pipeline.

[0044] Please see Figure 8 The upper plate 1 is also equipped with a force-saving torsion module 6 for quickly adjusting the rotation of the eccentric sleeve 3. The force-saving torsion module 6 includes a driven gear 61 coaxially fixedly installed on the outer wall of the worm 43. An installation plate 62 is fixedly installed on the inner wall of the upper plate 1. A sliding sleeve 63 is slidably connected to the outer wall of the installation plate 62. A small spring 64 is fixedly connected between the end of the installation plate 62 and the sliding sleeve 63. A driving gear 65 is rotatably installed on the side wall of the sliding sleeve 63. A rotating wheel 66 is coaxially fixedly connected to the driving gear 65.

[0045] Driven gear 61 is coaxially fixedly mounted on the outer wall of worm 43, and drives 61 and worm 43 rotate synchronously. Mounting plate 62 is fixedly mounted on the inner wall of upper frame plate 1. Sliding sleeve 63 is slidably connected to the outer wall of mounting plate 62 and can slide along the axial direction of mounting plate 62. Small spring 64 is connected between the end of mounting plate 62 and sliding sleeve 63. The elastic force of small spring 64 pushes sliding sleeve 63 to slide and reset away from driven gear 61. Driving gear 65 is rotatably mounted on the side wall of sliding sleeve 63. Rotary wheel 66 is coaxially fixedly connected to driving gear 65. The operator presses rotary wheel 66 to move the combination of rotary wheel 66, sliding sleeve 63, and driving gear 65 toward driven gear 61, thus... The driving gear 65 and driven gear 61 mesh, and then the rotating wheel 66 drives the driving gear 65 to rotate. The driving gear 65 meshes with the driven gear 61, transmitting the rotation of the rotating wheel 66 to the driven gear 61, which in turn drives the worm 43 to rotate. The gear transmission achieves effortless torsion, and the user's other hand can rotate the worm 43 at the same time, making adjustments on both sides simultaneously, which is more effortless and convenient, and improves the flexibility of operation. After the adjustment is completed, under the restoring force of the small spring 64, the sliding sleeve 63 drives the driving gear 65 to automatically move away from the driven gear 61, so that the driving gear 65 and driven gear 61 disengage, avoiding additional rotational resistance to the worm 43.

[0046] The driving gear 65 is positioned directly above the driven gear 61, and the diameter ratio of the driving gear 65 to the driven gear 61 is 2:1.

[0047] The driving gear 65 and driven gear 61 are aligned vertically. When the sliding sleeve 63 drives the driving gear 65 to slide downwards, the driving gear 65 accurately falls into the upper meshing position of the driven gear 61, achieving rapid meshing and avoiding meshing misalignment or jamming caused by eccentric arrangement. The diameter ratio of the driving gear 65 to the driven gear 61 is 2:1, that is, the number of teeth of the driving gear 65 is twice the number of teeth of the driven gear 61, forming a speed reduction and torque increase transmission pair. When the operator rotates the rotating wheel 66, the driven gear 61 outputs twice the torque of the driving gear 65, so that the operator can overcome the rotational resistance caused by the weight of the pipeline by applying a small rotational force to drive the worm gear 43 to rotate, thus achieving labor-saving adjustment.

[0048] Working principle: During installation, the two sets of lower frame plates 2 are first placed on both sides of the pipeline to be installed and fixed by bolts. Then, the upper frame plate 1 and the lower frame plate 2 are aligned and locked. The pipeline is inserted into the mounting hole 51 in the eccentric sleeve 3. During the pipeline insertion process, the contact ring 54 slides along the slide rod 53 towards the tightening rubber ring 57 under the friction of the outer wall of the pipeline. The pressing column 56 moves synchronously with the contact ring 54 and pushes against the tightening rubber ring 57, so that the tightening rubber ring 57 radially contracts and hugs the outer wall of the pipeline. When the pipeline is subjected to axial pull, the friction between the pipeline and the arc strip 55 further increases, causing the contact ring 54 to continue to slide towards the tightening rubber ring 57. The pushing force of the pressing column 56 on the tightening rubber ring 57 increases accordingly, and the clamping force of the tightening rubber ring 57 increases adaptively, thereby realizing the dynamic suppression of the axial movement of the pipeline.

[0049] After the pipe is installed, the operator rotates the worm gear 43 to drive the worm wheel ring 42 to rotate according to the deviation between the actual position of the pipe and the design position. The collar 41 and the eccentric sleeve 3 rotate synchronously with the worm wheel ring 42 until the center of the pipe is aligned with the design installation position. Under the self-locking characteristics of the worm wheel ring 42 and the worm gear 43, the collar 41 is locked at the current angle after the worm gear 43 stops rotating. This can overcome the eccentric torque generated by the weight of the pipe and prevent the eccentric sleeve 3 from rotating unexpectedly. At the same time, the elastic force of the large spring 48 pushes the guide rod 47, which in turn drives the pull frame 46 and the clamping plate 45 to slide towards the collar 41, so that the clamping plate 45 is embedded in the clamping groove 44, forming a secondary lock on the rotational freedom of the collar 41.

[0050] When further effort-saving adjustment is needed, the operator presses the rotating wheel 66, causing the sliding sleeve 63 to slide along the mounting plate 62 and compress the small spring 64. The driving gear 65 and the driven gear 61 are engaged. At this time, the operator rotates the rotating wheel 66, and the driving gear 65 drives the driven gear 61 to rotate and drives the worm gear 43 to rotate, realizing effort-saving torsional adjustment. After releasing the rotating wheel 66, the small spring 64 pushes the sliding sleeve 63 to reset, and the driving gear 65 and the driven gear 61 automatically disengage.

[0051] After adjustment, tighten the connecting bolts between the upper frame plate 1 and the lower frame plate 2, and the overall installation is complete.

[0052] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An eccentric adjustable pipe clamp structure for rail transit pipeline installation, comprising a detachably connected upper frame plate (1) and a lower frame plate (2), wherein an eccentric sleeve (3) is provided between the upper frame plate (1) and the lower frame plate (2), characterized in that: The upper plate (1) is equipped with a locking module (4) for stabilizing and limiting the rotation of the eccentric sleeve (3). The locking module (4) includes a collar (41) rotatably mounted on the inner wall of the upper frame plate (1). A limit ring (410) is coaxially fixedly mounted on the outer wall of the end of the collar (41). The inner walls of the upper frame plate (1) and the lower frame plate (2) are provided with a limit groove (49) that movably cooperates with the limit ring (410). A worm gear ring (42) is fixedly mounted on the outer surface of the collar (41). A worm (43) is rotatably mounted on the inner wall of the upper frame plate (1). Several slots (44) are arranged in a circular array on the outer surface of the collar (41). A card plate (45) is slidably mounted on the inner wall of the upper frame plate (1). A pulling frame (46) is fixedly connected to the end of the card plate (45). A guide rod (47) is fixedly mounted on the side wall of the pulling frame (46). A large spring (48) is fixedly connected between the end of the guide rod (47) and the inner wall of the upper frame plate (1).

2. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 1, characterized in that: The number of the lower shelf plates (2) is set to two sets, and the two sets of lower shelf plates (2) are detachably connected by bolts. The combined body of the two sets of lower shelf plates (2) is distributed in a mirror image of the upper shelf plate (1).

3. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 2, characterized in that: The number of the card slots (44) is set in two sets, and the two sets of card slots (44) are mirror images of each other on both sides of the worm gear ring (42), and the card plate (45) is set in correspondence with the card slots (44).

4. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 3, characterized in that: The side wall of the upper plate (1) is provided with a guide hole that slides with the guide rod (47). The two ends of the large spring (48) are fixedly connected to the inner wall of the end of the guide hole and the outer wall of the end of the guide rod (47), respectively.

5. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 4, characterized in that: The eccentric sleeve (3) is provided with an anti-pull positioning module (5) to limit the axial sliding of the rail transit pipeline. The anti-pull positioning module (5) includes an installation hole (51) opened inside the eccentric sleeve (3). Two sets of fixing rings (52) are fixedly installed on the inner wall of the installation hole (51). Multiple sets of sliding rods (53) are fixedly connected between the fixing rings (52). A contact ring (54) is slidably installed through the outer wall of the sliding rod (53). Several arc-shaped strips (55) are fixedly installed in a circumferential array on the inner arc surface of the contact ring (54). Multiple sets of abutting columns (56) are fixedly installed on the side wall of the contact ring (54). A tightening rubber ring (57) is fixedly installed on the inner wall of the end of the installation hole (51).

6. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 5, characterized in that: The inner wall of the fixing ring (52) is provided with a circular hole that matches the outer diameter of the abutting post (56), and the circular hole slides in conjunction with the abutting post (56).

7. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 6, characterized in that: The inner arc surface of the gathering rubber ring (57) has multiple sets of abutting bands (58) distributed along the axial direction, and the cross section of the abutting band (58) is V-shaped.

8. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 7, characterized in that: The upper frame plate (1) is also equipped with a force-saving torsion module (6) for quickly adjusting the rotation of the eccentric sleeve (3). The force-saving torsion module (6) includes a driven gear (61) coaxially fixedly installed on the outer wall of the worm (43). An installation plate (62) is fixedly installed on the inner wall of the upper frame plate (1). A sliding sleeve (63) is slidably connected to the outer wall of the installation plate (62). A small spring (64) is fixedly connected between the end of the installation plate (62) and the sliding sleeve (63). A driving gear (65) is rotatably installed on the side wall of the sliding sleeve (63). A rotating wheel (66) is coaxially fixedly connected to the driving gear (65).

9. The eccentric adjustable pipe clamp structure for rail transit pipeline installation according to claim 8, characterized in that: The driving gear (65) is positioned directly above the driven gear (61), and the diameter ratio of the driving gear (65) to the driven gear (61) is 2:1.

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