CN118423503A - Fastening device and fastening method for socket-type pipe connection - Google Patents

Abstract

The present invention discloses a fastening device and a fastening method for a spigot-and-socket pipe connection, and relates to the technical field of pipe installation. The fastening device comprises a clamping mechanism and a dragging mechanism, wherein the clamping mechanisms arranged in pairs are arranged outside a box respectively, and the clamping mechanisms arranged in pairs are used to control the axis center lines of adjacent pipe bodies to be butted and fastened to be collinear, and the dragging mechanism is installed in the box, and the dragging mechanism comprises a dragging assembly, and the dragging assembly is connected to the clamping mechanism at the rear in a transmission manner, and the clamping mechanism at the front is fixedly connected to the box, and the dragging assembly is used to drive the corresponding pipe body to intermittently and periodically move forward through the clamping mechanism at the rear, and within a time period, the corresponding pipe body moves at a variable speed. The fastening device ensures the sealing of the pipe installation, and with the help of the dragging assembly, the variable speed movement of the pipe body is realized, and the inertial impact force generated by the rapid pushing of the pipe body is effectively avoided.

Description

Fastening device and fastening method for socket-type pipe connection

Technical Field

The invention belongs to the technical field of pipeline installation, and in particular relates to a fastening device and a fastening method for socket-type pipeline connection.

Background technique

In municipal pipeline construction, according to construction needs, some underground pipelines need to be arranged, such as water supply pipelines, drainage pipelines, sewage pipelines, wire and cable protection pipelines, etc. Among them, the socket-type pipeline has been widely used and promoted in municipal engineering due to its characteristics of fast installation, good sealing, and economical affordability.

When connecting existing socket-and-spigot pipes, the traditional method is to manually adjust the initial docking position of the two pipe sections, then tie the two pipe sections with ropes, and then use the pulling force of a hand winch to drag the pipe and complete the docking and tightening of the pipe, and seal it with the help of a rubber ring at the docking position of the two pipe sections. However, the laying environment of the pipe is to dig a pre-buried trench on the ground, and lay the pipe flat in the trench along the laying direction. Due to the unevenness of the bottom wall of the trench, when the two pipe sections are manually adjusted to dock, the central axis of the pipe docking position becomes skewed, resulting in a loose connection between the rubber ring and the pipe, affecting the sealing effect of the pipe.

Summary of the invention

The purpose of the present invention is to provide a fastening device and a fastening method for spigot-and-socket type pipe connections with a simple structure and reasonable design in order to solve the above problems.

The present invention achieves the above-mentioned purpose through the following technical solutions:

A fastening device for a spigot-and-socket type pipe connection is used to fasten and connect adjacent pipe bodies. The fastening device comprises a box body and a clamping mechanism. The clamping mechanisms are arranged in pairs. The clamping mechanisms arranged in pairs are arranged outside the box body respectively. Along the butt-jointing direction of the pipe bodies, the clamping mechanism located at the rear is used to clamp and lock the pipe body located at the rear, and the clamping mechanism located at the front is used to clamp and lock the pipe body located at the front. The clamping mechanisms arranged in pairs are used to control the axial center lines of the adjacent pipe bodies to be butt-jointed and fastened to be collinear.

The fastening device also includes a dragging mechanism, which is installed in a box body. The dragging mechanism includes a dragging assembly, which is transmission-connected to a clamping mechanism located at the rear, and a clamping mechanism located at the front is fixedly connected to the box body. The dragging assembly is used to drive the corresponding pipe body to move intermittently and periodically toward the front through the clamping mechanism located at the rear, and within a time period, the corresponding pipe body moves at a variable speed.

As a further optimization solution of the present invention, the law of the variable speed movement is a law of first accelerating and then decelerating.

As a further optimization scheme of the present invention, the dragging assembly includes a dragging drive assembly and a ratchet plate, the ratchet plate is fixedly connected to the side of the pipe body facing the rear with a clamping mechanism located at the rear, the side end of the ratchet plate is fixedly provided with a sliding seat, the inner wall of the box is provided with a sliding groove, the sliding seat is slidably connected to the box through the sliding groove, wherein the sliding direction of the sliding seat and the box is consistent with the axial centerline direction of the pipe body, and under the drive of the dragging drive assembly, the ratchet plate is used to drag the corresponding pipe body toward the front through the clamping mechanism located at the rear for intermittent and periodic speed change movement.

As a further optimization scheme of the present invention, the dragging drive assembly includes a first driving member, an eccentric rod, a connecting rod, a shift block and a single ratchet, the output end of the first driving member is rotatably connected to the eccentric rod, the eccentric rod is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably connected to the shift block, a shift groove is provided on the inner wall of the box, the shift block is slidably connected to the box through the shift groove, the front of the shift block is rotatably connected to the single ratchet, and the tooth end of the single ratchet is frictionally engaged with the ratchet on the ratchet plate;

Among them, a traction rope is arranged on the single ratchet, and the other end of the traction rope is connected to the winding end of the winder, and the winder is arranged on the shift block. A reset component is arranged at a position in front of the ratchet plate in the box body, and the contact end of the reset component contacts and cooperates with the ratchet plate.

As a further optimization scheme of the present invention, the eccentric rod comprises a telescopic rod, a limit rod, a first spring and a rotating seat, the output end of the first driving member is rotatably connected to the rotating seat, the telescopic rod is slidably connected to the rotating seat, the outer end of the telescopic rod is rotatably connected to the connecting rod, the inner end of the telescopic rod is fixedly connected to the limit rod, the limit rod is sleeved with the first spring, wherein an abutment block is provided on the upper part of the outer end of the telescopic rod;

The dragging mechanism also includes a distance adjusting component, which is arranged on one side of the dragging component and is in transmission cooperation with the abutment block. The distance adjusting component is used to adjust the rotation radius of the outer end of the telescopic rod through the abutment block, wherein, under the transmission cooperation between the distance adjusting component and the abutment block, the distance that the ratchet plate periodically moves toward the forward direction decreases successively.

As a further optimization scheme of the present invention, the distance adjusting component includes a distance adjusting drive and a distance adjusting plate, the distance adjusting drive is transmission-connected to the distance adjusting plate, the distance adjusting plate is arranged on one side of the resistance block, the distance adjusting plate has a distance adjusting arc surface on the side facing the resistance block, the distance adjusting plate frictionally contacts with the resistance block through the distance adjusting arc surface, under the drive of the distance adjusting drive, the distance adjusting plate periodically moves forward, and the moving direction of the distance adjusting plate is consistent with the moving direction of the ratchet plate, wherein the distance of the distance adjusting plate periodically moving forward gradually decreases.

As a further optimization scheme of the present invention, the pitch-adjusting driving parts include an active rack, an active gear, a transition gear, a driven gear, and a driven rack. The active rack is fixedly installed on the rear end of the ratchet plate. The active rack, the active gear and the transition gear are meshed and transmitted in sequence. The transition gear and the driven gear are fixedly connected to the same transmission shaft. The two ends of the transmission shaft are respectively rotatably connected to the box body. The driven gear is meshed and transmitted with the driven rack. The front end of the driven rack is fixedly connected to the pitch-adjusting plate. The driven rack is slidably connected to the fixed seat. The fixed seat is fixedly arranged on the top wall inside the box body, wherein the displacement speed of the pitch-adjusting plate is less than the displacement speed of the ratchet plate.

As a further optimization scheme of the present invention, the clamping mechanism includes a base, a clamping drive, a bracket, a fixed rod, a clamping block, a second spring and a swing rod, a clamping drive is provided at the lower end of the base, the brackets are arranged in pairs, the clamping drive is respectively connected to the paired brackets in a transmission manner, the brackets are fixedly connected with a fixed rod toward the clamping area of the pipe body, the fixed rod and the fixed connection end of the bracket are rotatably connected with a swing rod, the swing rod is located above the fixed rod, and the swing rod and the fixed rod are fixedly connected by a second spring, the fixed rod and the swing rod are respectively provided with clamping blocks at one end away from the bracket, the clamping block has a circular arc convex surface, wherein the base of the clamping mechanism located at the rear is fixedly connected to the ratchet plate, and the base of the clamping mechanism located at the front is fixedly connected to the box.

As a further optimization solution of the present invention, a storage groove is provided on the box body, and the storage groove is located above the front clamping mechanism.

The present invention also provides a method for fastening a spigot-and-socket pipe connection, using the spigot-and-socket pipe connection fastening device, comprising the following steps:

Step 1: Install the fastening device above the fastening connection area of the adjacently laid pipeline body;

Step 2: clamp and lock the corresponding pipe bodies by means of the clamping mechanisms arranged in pairs in the fastening device, so that the axis lines of the adjacent pipe bodies to be fastened are in line;

Step three: The dragging assembly in the dragging mechanism drives the clamping mechanism at the rear, so that the clamping mechanism at the rear drives the corresponding pipe body to move intermittently and periodically toward the front, and within a time period, the corresponding pipe body moves at a variable speed.

The present invention has at least the following beneficial effects: the present invention provides a fastening device and a fastening method for a spigot-and-socket type pipe connection, wherein the fastening device makes the axis lines of the plug end and the socket end collinear through a clamping mechanism arranged in pairs, thereby achieving the reliability of the butt fastening of the plug end and the socket end, and solving the existing problem that the central axis of the butt joint position of the two pipes is skewed when the butt joint is manually adjusted due to the unevenness of the bottom wall of the groove;

Moreover, the fastening device is provided with a dragging mechanism, so that the ratchet plate drives the rear pipe body to move intermittently and periodically toward the front through the rear clamping mechanism. Within a time period, the corresponding pipe body has a variable speed movement rule of first accelerating and then decelerating, which can effectively prevent the fast-moving pipe body from being subjected to sudden impact force, thereby reducing friction damage to the connection part of the pipe body and making the pipe installation more stable.

In addition, under the limit adjustment of the distance adjusting plate, the distance that the ratchet plate periodically moves forward is reduced successively, ensuring that the plug-in end of the pipe body is slowly and gradually inserted into the receiving end to ensure that the plug-in connection between the plug-in end and the receiving end is in place.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of a partial cross-sectional front view of the structure of FIG1 of the present invention;

FIG3 is a schematic diagram of the structure of the drag component in the present invention;

FIG4 is a partial cross-sectional structural schematic diagram of the telescopic rod and the rotating seat in the present invention;

FIG5 is a schematic diagram of the structure of the distance adjustment assembly in the present invention;

6 is a schematic diagram of the structure of the distance adjusting plate and the abutment block in the present invention when they are in the initial position;

7 is a schematic diagram of the structure of the distance adjusting plate and the abutment block in the present invention when they are located at the distance adjusting position;

FIG8 is a schematic structural diagram of the clamping mechanism and the pipe body in the present invention;

FIG9 is a schematic diagram of the structure of the dragging assembly of the present invention when the dragging is completed;

FIG. 10 is an enlarged view of point A in FIG. 9 of the present invention.

In the figure: 1, pipe body; 11, middle pipe body; 12, rubber ring; 13, plug end; 14, receiving end; 2, clamping mechanism; 21, second motor; 22, screw rod; 23, shift plate; 24, bracket; 25, fixed rod; 26, clamping block; 27, second spring; 28, swing rod; 29, base; 3, dragging mechanism; 31, dragging assembly; 311, ratchet plate; 3111, slide seat; 312, single ratchet; 313, shift block; 314, shift slot; 315, connecting rod; 316, Rotating seat; 317, telescopic rod; 3171, limit rod; 3172, first spring; 318, first motor; 32, distance adjustment assembly; 321, active rack; 322, active gear; 323, transition gear; 324, driven rack; 325, fixed seat; 326, driven gear; 327, guide rod; 328, distance adjustment plate; 3281, distance adjustment arc surface; 329, resistance block; 33, box body; 34, reset assembly; 341, traction rope; 342, winder; 35, lifting ear; 4, storage slot.

Detailed ways

The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

As shown in FIGS. 1 to 10 , a fastening device for spigot-type pipe connection is used to fasten adjacently laid pipe bodies 1. The fastening device includes a box 33 and a clamping mechanism 2. The clamping mechanisms 2 are arranged in pairs. The clamping mechanisms 2 arranged in pairs are respectively arranged outside the box 33. Along the docking direction of the pipe bodies 1, the clamping mechanism 2 located at the rear is used to clamp and lock the pipe body 1 located at the rear, and the clamping mechanism 2 located at the front is used to clamp and lock the pipe body 1 located at the front. The clamping mechanisms 2 arranged in pairs are used to control the axial center lines of the adjacent pipe bodies 1 to be docked and fastened to be collinear.

The fastening device also includes a dragging mechanism 3, which is installed in a box 33. The dragging mechanism 3 includes a dragging assembly 31. The dragging assembly 31 is transmission-connected to the clamping mechanism 2 located at the rear, and the clamping mechanism 2 located at the front is fixedly connected to the box 33. The dragging assembly 31 is used to drive the corresponding pipe body 1 to move intermittently and periodically toward the front through the clamping mechanism 2 located at the rear, and within a time period, the corresponding pipe body 1 moves at a variable speed.

It should be noted that, as shown in Figures 1 and 2, the existing adjacently laid pipe bodies 1 include an intermediate pipe body 11, a plug-in end 13 and a receiving end 14, and a rubber ring 12 is sleeved on the outside of the plug-in end 13. The direction from left to right shown in Figure 2 is the docking direction of the pipe body 1. Therefore, the left side is defined as the rear direction of the docking direction, and the right side is defined as the front direction of the docking direction. Before connecting the adjacently laid pipe bodies 1, it is necessary to clean the inner wall of the receiving end 14 of the front pipe body 1 with a cleaning piece such as a rag, and then move the plug-in end 13 of the rear pipe body 1 forward through the fastening device of the present invention, so that the plug-in end 13 is shifted to the receiving end 14, and the rubber ring 12 is squeezed between the plug-in end 13 and the receiving end 14 to complete the fastening and sealing connection of the socket-type pipe.

Among them, when the laid pipes are actually used, for example, sewage discharge pipes, water pipes, drainage pipes, etc., they are generally laid and connected with the docking direction as the material transportation direction.

In the above embodiment, the adjacent pipe bodies 1 to be fastened are clamped and locked by the clamping mechanisms 2 arranged in pairs, so that the connecting ends of the adjacent pipe bodies 1 always keep their axis lines collinear when they move toward each other, effectively avoiding the situation that the central axis of the docking position of the pipe bodies 1 is skewed when the two pipe bodies 1 are manually adjusted for docking due to the unevenness of the bottom wall of the groove, thereby ensuring the tight connection between the rubber ring 12 and the pipe body 1 and ensuring the sealing effect of the pipe body 1;

Moreover, by means of the transmission of the clamping mechanism 2 located at the rear by the dragging component 31, the pipe body 1 at the rear is intermittently and periodically moved toward the front, and within a time period, the corresponding pipe body 1 changes speed and moves, wherein the law of the speed change movement is a law of first accelerating and then decelerating. Through the above-mentioned periodic repeated acceleration and deceleration movement law, it is possible to effectively avoid the existing situation where the outermost end of the pipe body 1 is hit by a crane, causing the fast-moving pipe body 1 to be subjected to sudden impact force, thereby reducing the friction damage of the connection parts (the receiving end 14 and the plug end 13) of the pipe body 1. The above-mentioned movement method makes the pipeline installation smoother and ensures the accuracy of docking.

Exemplarily, as shown in Figures 2 to 5, the dragging assembly 31 includes a dragging drive assembly and a ratchet plate 311, the ratchet plate 311 is fixedly connected to the side of the pipe body 1 with a clamping mechanism 2 located at the rear, the side end of the ratchet plate 311 is fixedly provided with a slide 3111, the inner wall of the box 33 is provided with a slide groove, the slide 3111 is slidably connected to the box 33 through the slide groove, wherein the sliding direction of the slide 3111 and the box 33 is consistent with the axial direction of the pipe body 1, under the drive of the dragging drive assembly, the ratchet plate 311 is used to drag the corresponding pipe body 1 to the front through the clamping mechanism 2 located at the rear for intermittent and periodic speed change movement.

It should be noted that the dragging drive assembly is a device that can make the ratchet plate 311 intermittently and periodically move at variable speeds along the direction of the slide groove. Exemplarily, the dragging drive assembly is a hydraulic telescopic drive component, an electrical telescopic drive component, an electric telescopic drive component, etc., which is not limited here.

Exemplarily, referring to FIG. 3 , the dragging drive assembly includes a first driving member, an eccentric rod, a connecting rod 315, a shift block 313 and a single ratchet 312. The output end of the first driving member is rotatably connected to the eccentric rod, the eccentric rod is rotatably connected to one end of the connecting rod 315, and the other end of the connecting rod 315 is rotatably connected to the shift block 313. A shift groove 314 is provided on the inner wall of the box body 33. The shift block 313 is slidably connected to the box body 33 through the shift groove 314. The front of the shift block 313 is rotatably connected to the single ratchet 312. The tooth end of the single ratchet 312 is frictionally engaged with the ratchet on the ratchet plate 311.

As shown in Figure 3, a traction rope 341 is provided on the single ratchet 312, and the other end of the traction rope 341 is connected to the winding end of the winder 342. The winder 342 is set on the shift block 313. A reset component 34 is provided at a position on the front side of the ratchet plate 311 in the box body 33, and the contact end of the reset component 34 contacts and cooperates with the ratchet plate 311.

In the above embodiment, exemplarily, the first driving member is the first motor 318. Under the drive of the first motor 318, the eccentric rod rotates periodically at a uniform speed, and the shift block 313 is driven to move back and forth left and right through the connecting rod 315. When the shift block 313 moves to the right, the single ratchet 312 is engaged and squeezed with the ratchet teeth of the ratchet plate 311, pushing the ratchet plate 311 to move to the right; when the shift block 313 moves to the left, the single ratchet 312 sequentially passes over the multiple ratchet teeth of the ratchet plate 311 and moves to the left to the initial position. During this process, the ratchet plate 311 does not move; when the fastening connection of the pipeline is completed, After the connection, the clamping mechanism 2 releases the clamping lock on the pipe body 1, and the ratchet plate 311 moves right to the maximum displacement. At this time, the ratchet plate 311 needs to be moved left to the initial position. As shown in FIG10 , firstly, the traction rope 341 is rolled up by the winding machine 342, and the single ratchet 312 is lifted up until the single ratchet 312 and the ratchet plate 311 are spaced apart. At this time, the abutting end of the reset component 34 abuts against the right end of the ratchet plate 311, so as to drive the rear clamping mechanism 2 to move left to the initial position. For example, the reset component 34 is a hydraulic telescopic component or an electrical telescopic component. After the ratchet plate 311 is reset, the single ratchet 312 and the reset component 34 are restored to their initial positions respectively. At this time, the traction rope 341 is in a relaxed state.

In one embodiment, as shown in FIG. 4 , the eccentric rod comprises a telescopic rod 317, a limiting rod 3171, a first spring 3172 and a rotating seat 316, the output end of the first driving member is rotatably connected to the rotating seat 316, the telescopic rod 317 is slidably connected to the rotating seat 316, the outer end of the telescopic rod 317 is rotatably connected to the connecting rod 315, the inner end of the telescopic rod 317 is fixedly connected to the limiting rod 3171, the limiting rod 3171 is sleeved with the first spring 3172, wherein the upper portion of the outer end of the telescopic rod 317 is provided with a resisting block 329;

Continuing to refer to Figures 2 to 7, the dragging mechanism 3 also includes a distance adjusting component 32, which is arranged on one side of the dragging component 31, and the distance adjusting component 32 is in transmission cooperation with the abutment block 329, and the distance adjusting component 32 is used to adjust the rotation radius of the outer end of the telescopic rod 317 through the abutment block 329, wherein, under the transmission cooperation between the distance adjusting component 32 and the abutment block 329, the distance that the ratchet plate 311 periodically moves toward the front direction decreases successively, that is, the closer the rear pipe body 1 is to the front pipe body 1, the smaller the moving distance is, so as to ensure that the plug-in end 13 of the pipe body 1 is slowly and gradually inserted into the receiving end 14 by a small distance, so as to ensure that the plug-in connection between the plug-in end 13 and the receiving end 14 is in place.

It should be noted that when the rotating seat 316 rotates one circle, the distance between the leftmost end and the rightmost end of the moving trajectory of the rotating connection position of the telescopic rod 317 and the connecting rod 315 is the displacement of the shift block 313 within a time period. Through the transmission cooperation between the distance adjustment component 32 and the resistance block 329, when the rotation radius of the outer end of the telescopic rod 317 is reduced, the displacement of the shift block 313 within the time period under this condition is reduced.

Exemplarily, as shown in Figures 2, 6 and 7, the distance adjustment component 32 includes a distance adjustment drive and a distance adjustment plate 328, the distance adjustment drive is transmission-connected to the distance adjustment plate 328, the distance adjustment plate 328 is arranged on one side of the abutment block 329, the distance adjustment plate 328 has a distance adjustment arc surface 3281 on the side facing the abutment block 329, the distance adjustment plate 328 is frictionally engaged with the abutment block 329 through the distance adjustment arc surface 3281, under the drive of the distance adjustment drive, the distance adjustment plate 328 moves periodically toward the front, and the moving direction of the distance adjustment plate 328 is consistent with the moving direction of the ratchet plate 311, wherein the distance that the distance adjustment plate 328 moves periodically toward the front gradually decreases.

It should be noted that, as shown in Figure 7, when the resistance block 329 rubs against the distance-adjusting arc surface 3281, along the rotation direction of the rotating seat 316, that is, the counterclockwise direction shown in Figure 6, the distance between the rotation axis centerline of the distance-adjusting arc surface 3281 and the rotating seat 316 gradually decreases to ensure that the resistance block 329 smoothly enters the resistance area of the distance-adjusting arc surface 3281.

Exemplarily, as shown in FIG5 , the pitch-adjusting driving member comprises an active rack 321, an active gear 322, a transition gear 323, a driven gear 326, and a driven rack 324. The active rack 321 is fixedly mounted on the rear end of the ratchet plate 311. The active rack 321, the active gear 322, and the transition gear 323 are meshed and driven in sequence. The transition gear 323 and the driven gear 326 are fixedly connected to the same transmission shaft. Both ends of the transmission shaft are rotatably connected to the housing 33. The driven gear 326 is meshed with the driven rack 324 for transmission, the front end of the driven rack 324 is fixedly connected to the distance adjusting plate 328, the driven rack 324 is slidably connected to the fixed seat 325, the fixed seat 325 is fixedly arranged on the top wall inside the box body 33, the upper end of the distance adjusting plate 328 is fixedly connected with a guide rod 327, the guide rod 327 is slidably connected to the fixed seat 325, to ensure the stable movement of the distance adjusting plate 328, wherein the displacement speed of the distance adjusting plate 328 is less than the displacement speed of the ratchet plate 311.

It should be noted that, since the linear speeds of the active rack 321, the active gear 322 and the transition gear 323 are the same, marked as V1, and the linear speeds of the driven gear 326 and the driven rack 324 are the same, marked as V2, and the linear speed ratio of the transition gear 323 and the driven gear 326 is: V1/V2=D1/D2＞1, wherein D1 is the diameter of the transition gear 323, and D2 is the diameter of the driven gear 326, the displacement speed of the distance adjustment plate 328 is less than the displacement speed of the ratchet plate 311.

In the above embodiment, since the distance moved by the ratchet plate 311 compared with the previous cycle is reduced, the distance moved by the distance adjusting plate 328 compared with the previous cycle is also reduced through the transmission of the above-mentioned distance adjusting drive member, so that the degree of reduction in the distance moved by the ratchet plate 311 in the next cycle is also reduced, that is, the distance change law of the ratchet plate 311 moving forward periodically and the distance change law of the distance adjusting plate 328 moving forward periodically are complementary to each other, so that the ratchet plate 311 drives the rear pipe body 1 to be slowly and smoothly connected with the front pipe body 1 through the clamping mechanism 2.

In one embodiment, as shown in FIG8 , the clamping mechanism 2 includes a base 29, a clamping drive, a bracket 24, a fixing rod 25, a clamping block 26, a second spring 27 and a swing rod 28. A clamping drive is provided at the lower end of the base 29. The brackets 24 are arranged in pairs. The clamping drive is respectively connected to the paired brackets 24 in a transmission manner. Under the drive of the clamping drive, the paired brackets move toward each other. The brackets 24 are fixedly connected to the fixing rod 25 toward the clamping area of the pipe body 1. The fixed connection end of the rod 25 and the bracket 24 is rotatably connected with a swing rod 28, the swing rod 28 is located above the fixed rod 25, and the swing rod 28 and the fixed rod 25 are fixedly connected by a second spring 27. The fixed rod 25 and the swing rod 28 are respectively provided with a clamping block 26 at one end away from the bracket 24, and the clamping block 26 has an arc convex surface, wherein the base 29 of the clamping mechanism 2 located at the rear is fixedly connected to the ratchet plate 311, and the base 29 of the clamping mechanism 2 located at the front is fixedly connected to the box body 33.

It should be noted that, as shown in FIG8 , the clamping drive member includes a second motor 21, a screw rod 22 and a shift plate 23. The second motor 21 is transmission-connected to the screw rod 22. The shift plate 23 is threadedly connected to the screw rod 22. The shift plate 23 is fixedly connected to the bracket 24. When the paired brackets 24 move toward each other, the fixed rod 25 supports the pipe body 1. As the brackets 24 continue to move toward each other, under the tensile elastic force of the second spring 27, the clamping block 26 on the swing rod 28 locks and clamps the pipe body 1, and moves along the docking direction. , a plurality of brackets 24 are fixedly connected to the shift plate 23, as shown in FIG2 , which illustrates that two brackets 24 are fixedly connected to the shift plate 23. In other embodiments, the number of brackets 24 can be selected and set as needed. At this time, the number of brackets 24, fixed rods 25, and swing rods 28 are set in a one-to-one correspondence to achieve multi-point clamping and locking of the pipe body 1, fully ensuring that the receiving end 14 of the front pipe body 1 and the axial center line of the plug-in end 13 of the rear pipe body 1 are in line, thereby ensuring the docking accuracy and installation sealing between the two pipes.

Exemplarily, as shown in Figures 1 and 2, a storage groove 4 is provided on the box body 33, and the storage groove 4 is located above the front clamping mechanism 2. The rubber ring 12 can be placed in the storage groove 4 to facilitate construction personnel to use it and avoid the rubber ring being placed randomly on the construction site, causing it to be stuck with dirt and impurities, affecting the subsequent sealing connection effect. If the on-site construction personnel are short of manpower, they can use lifting equipment such as cranes and the lifting ears 35 on the box body 33 to stably place the fastening device above the pipe connection position.

It should be noted that, before using the fastening device, the rear pipe body 1 is laid in the pre-buried groove, and a rubber ring 12 is sleeved on the plug-in end 13 of the rear pipe body 1, and the inner wall of the receiving end 14 of the front pipe body 1 is cleaned, and then the fastening device is placed above the connection position of the two pipe bodies 1 to complete the preparation work;

When in use, the plug end 13 and the receiving end 14 are lifted off the ground by the clamping mechanism 2 to avoid the outer walls of the plug end 13 and the receiving end 14 being subjected to the friction of the ground when docking. In addition, the clamping mechanisms 2 arranged in pairs ensure that the central axes of the plug end 13 and the receiving end 14 are in line, thereby solving the existing problems of skewed installation and poor sealing caused by manual dragging. At this time, the first motor 318 is started, and the connecting rod 315 drives the shift block 313 to move right. Through the extrusion transmission of the single ratchet 312 and the ratchet plate 311, the clamp on the ratchet plate 311 is The holding mechanism 2 drives the rear pipe body 1 to move rightward, thereby dragging the pipe body 1. Moreover, when the rotation connection position of the connecting rod 315 and the telescopic rod 317 rotates uniformly around the rotation axis of the first motor 318 for one circle, that is, within a time period, the shift block 313 moves rightward in a law of first accelerating and then decelerating, and the shift block 313 and the ratchet plate 311 move rightward synchronously, which can effectively prevent the fast-moving pipe body 1 from being subjected to sudden impact force, thereby reducing friction damage to the connection parts (the receiving end 14 and the plug end 13) of the pipe body 1.

In addition, during the rightward movement of the ratchet plate 311, the distance adjusting plate 328 is also moved to the right through the transmission between the components described in Figure 5, and within the same time period, the displacement of the distance adjusting plate 328 is less than the displacement of the ratchet plate 311. Through the friction between the distance adjusting plate 328 and the abutment block 329, as shown in Figure 7, the telescopic rod 317 is moved inward, and the distance value of the rotational connection point of the telescopic rod 317 and the connecting rod 315 from the leftmost end to the rightmost end of the trajectory is reduced, thereby achieving the periodic movement distance of the ratchet plate 311 toward the front direction to be reduced successively, that is, the closer the rear pipe body 1 is to the front pipe body 1, the smaller the movement distance is, so as to ensure that the plug-in end 13 of the pipe body 1 is slowly and gradually inserted into the receiving end 14 over a small distance, so as to avoid the inertial impact force generated by the rapid pushing of the pipe body 1, and ensure the stable connection of the two pipes.

The present invention also provides a method for fastening a spigot-and-bell pipe connection, which is applied to the above-mentioned spigot-and-bell pipe connection fastening device. The method for fastening a spigot-and-bell pipe connection comprises the following steps:

Step 1: Install the fastening device above the fastening connection area of the adjacently laid pipeline body 1;

Step 2: clamp and lock the corresponding pipe bodies 1 by means of the clamping mechanisms 2 arranged in pairs in the fastening device, so that the axis lines of the adjacent pipe bodies 1 to be fastened are in line;

Step three: The dragging assembly 31 in the dragging mechanism 3 drives the clamping mechanism 2 at the rear, so that the clamping mechanism 2 at the rear drives the corresponding pipe body 1 to move intermittently and periodically toward the front, and within a time period, the corresponding pipe body 1 moves at a variable speed.

The above method ensures that the two pipes can be butted and installed reliably, preventing the pipe body 1 at the rear from being impacted due to rapid movement, thereby ensuring the sealing of the pipe connection.

The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims (10)

1. A fastening device for a socket-type pipe connection, used for fastening and connecting adjacently laid pipe bodies (1), characterized in that the fastening device comprises a box (33) and a clamping mechanism (2), the clamping mechanisms (2) are arranged in pairs, the clamping mechanisms (2) arranged in pairs are respectively arranged outside the box (33), and along the butting direction of the pipe bodies (1), the clamping mechanism (2) located at the rear is used to clamp and lock the pipe body (1) located at the rear, and the clamping mechanism (2) located at the front is used to clamp and lock the pipe body (1) located at the front, and the clamping mechanisms (2) arranged in pairs are used to control the axis center lines of the adjacent pipe bodies (1) to be butted and fastened to be collinear; The fastening device further comprises a dragging mechanism (3), wherein the dragging mechanism (3) is installed in the box (33), and the dragging mechanism (3) comprises a dragging assembly (31), wherein the dragging assembly (31) is connected in transmission to a clamping mechanism (2) located at the rear, and the clamping mechanism (2) located at the front is fixedly connected to the box (33), and the dragging assembly (31) is used to drive the corresponding pipe body (1) to move intermittently and periodically toward the front through the clamping mechanism (2) located at the rear, and within a time period, the corresponding pipe body (1) moves at a variable speed. 2. A fastening device for socket-type pipe connection according to claim 1, characterized in that the law of the variable speed movement is a law of first accelerating movement and then decelerating movement. 3. A fastening device for a socket-type pipe connection according to claim 2, characterized in that the dragging assembly (31) comprises a dragging drive assembly and a ratchet plate (311), the ratchet plate (311) is fixedly connected to a clamping mechanism (2) located at the rear on the side facing the pipe body (1), a sliding seat (3111) is fixedly arranged on the side end of the ratchet plate (311), a sliding groove is provided on the inner wall of the box body (33), and the sliding seat (3111) is slidably connected to the box body (33) through the sliding groove, wherein the sliding direction of the sliding seat (3111) and the box body (33) is consistent with the axial centerline direction of the pipe body (1), and under the drive of the dragging drive assembly, the ratchet plate (311) is used to drag the corresponding pipe body (1) to move intermittently and periodically at a variable speed toward the front through the clamping mechanism (2) located at the rear. 4. A fastening device for a socket-type pipe connection according to claim 3, characterized in that the dragging drive assembly comprises a first driving member, an eccentric rod, a connecting rod (315), a shift block (313) and a single ratchet (312), the output end of the first driving member is rotatably connected to the eccentric rod, the eccentric rod is rotatably connected to one end of the connecting rod (315), the other end of the connecting rod (315) is rotatably connected to the shift block (313), a shift groove (314) is provided on the inner wall of the box (33), the shift block (313) is slidably connected to the box (33) through the shift groove (314), the front of the shift block (313) is rotatably connected to the single ratchet (312), the tooth end of the single ratchet (312) is frictionally engaged with the ratchet on the ratchet plate (311); The single ratchet (312) is provided with a traction rope (341), the other end of the traction rope (341) is connected to the winding end of a winding machine (342), the winding machine (342) is arranged on the shift block (313), and a reset component (34) is arranged in the box body (33) at a position in front of the ratchet plate (311), and the abutting end of the reset component (34) is in abutment with the ratchet plate (311). 5. A fastening device for a spigot-and-socket type pipe connection according to claim 4, characterized in that the eccentric rod comprises a telescopic rod (317), a limiting rod (3171), a first spring (3172) and a rotating seat (316), the output end of the first driving member is rotatably connected to the rotating seat (316), the telescopic rod (317) is slidably connected to the rotating seat (316), the outer end of the telescopic rod (317) is rotatably connected to the connecting rod (315), the inner end of the telescopic rod (317) is fixedly connected to the limiting rod (3171), the limiting rod (3171) is sleeved with the first spring (3172), wherein an abutment block (329) is provided at the upper portion of the outer end of the telescopic rod (317); The dragging mechanism (3) further comprises a distance adjustment component (32), the distance adjustment component (32) being arranged on one side of the dragging component (31), and the distance adjustment component (32) being in transmission cooperation with a resistance block (329), the distance adjustment component (32) being used to adjust the rotation radius of the outer end of the telescopic rod (317) through the resistance block (329), wherein under the transmission cooperation between the distance adjustment component (32) and the resistance block (329), the distance that the ratchet plate (311) periodically moves in the forward direction is reduced successively. 6. A fastening device for a socket-type pipe connection according to claim 5, characterized in that the distance adjustment component (32) comprises a distance adjustment driving member and a distance adjustment plate (328), the distance adjustment driving member is transmission-connected to the distance adjustment plate (328), the distance adjustment plate (328) is arranged on one side of the abutment block (329), the distance adjustment plate (328) has a distance adjustment arc surface (3281) on the side facing the abutment block (329), the distance adjustment plate (328) is frictionally engaged with the abutment block (329) through the distance adjustment arc surface (3281), under the drive of the distance adjustment driving member, the distance adjustment plate (328) periodically moves forward, and the moving direction of the distance adjustment plate (328) is consistent with the moving direction of the ratchet plate (311), wherein the distance of the distance adjustment plate (328) periodically moving forward gradually decreases. 7. A fastening device for a spigot-and-socket pipe connection according to claim 6, characterized in that the adjustable pitch drive member comprises an active rack (321), an active gear (322), a transition gear (323), a driven gear (326), and a driven rack (324), wherein the active rack (321) is fixedly mounted on the rear end of the ratchet plate (311), the active rack (321), the active gear (322) and the transition gear (323) are meshed and driven in sequence, and the transition gear (323) and the driven gear (324) are meshed and driven in sequence. The driven gear (326) is fixedly connected to the same transmission shaft, and the two ends of the transmission shaft are respectively rotatably connected to the housing (33), the driven gear (326) is meshed with the driven rack (324) for transmission, the front end of the driven rack (324) is fixedly connected to the distance adjusting plate (328), the driven rack (324) is slidably connected to the fixed seat (325), and the fixed seat (325) is fixedly arranged on the top wall inside the housing (33), wherein the displacement speed of the distance adjusting plate (328) is less than the displacement speed of the ratchet plate (311). 8. A fastening device for a socket-type pipe connection according to claim 7, characterized in that the clamping mechanism (2) comprises a base (29), a clamping drive, a bracket (24), a fixing rod (25), a clamping block (26), a second spring (27) and a swing rod (28), the lower end of the base (29) is provided with a clamping drive, the brackets (24) are arranged in pairs, the clamping drive is respectively connected to the brackets (24) arranged in pairs, and the fixing rod (25) is fixedly connected to the clamping area of the bracket (24) facing the pipe body (1), and the fixing rod (25) is connected to the bracket The fixed connection end of the bracket (24) is rotatably connected to a swing rod (28), the swing rod (28) is located above the fixed rod (25), and the swing rod (28) and the fixed rod (25) are fixedly connected via a second spring (27), and the fixed rod (25) and the swing rod (28) are respectively provided with a clamping block (26) at one end away from the bracket (24), and the clamping block (26) has an arc convex surface, wherein the base (29) of the clamping mechanism (2) located at the rear is fixedly connected to the ratchet plate (311), and the base (29) of the clamping mechanism (2) located at the front is fixedly connected to the box body (33). 9. A fastening device for socket-and-spigot type pipe connection according to claim 8, characterized in that a receiving groove (4) is provided on the box body (33), and the receiving groove (4) is located above the front clamping mechanism (2). 10. A method for fastening a spigot-and-bell type pipe connection, using the spigot-and-bell type pipe connection fastening device according to any one of claims 1 to 9, characterized in that it comprises the following steps: Step 1: Installing the fastening device above the fastening connection area of the adjacently laid pipeline body (1); Step 2: clamping and locking the corresponding pipe bodies (1) by means of the clamping mechanisms (2) arranged in pairs in the fastening device, so that the axis lines of the adjacent pipe bodies (1) to be butt-jointed and fastened are in line; Step 3: The dragging assembly (31) in the dragging mechanism (3) drives the clamping mechanism (2) at the rear, so that the clamping mechanism (2) at the rear drives the corresponding pipe body (1) to move intermittently and periodically toward the front, and within a time period, the corresponding pipe body (1) moves at a variable speed.