Pipe production traction device

Abstract

The invention discloses a pipe production traction device, and relates to the technical field of pipe production, the pipe production traction device comprises two belt wheel sets, each belt wheel set comprises a first belt wheel, a second belt wheel and a belt wound between the first belt wheel and the second belt wheel, and a preset distance is formed between the first belt wheel and the second belt wheel in the traction direction of a pipe to be dragged; the distance between the two belt wheel sets is adjustable so that the belt faces of the belts of the two belt wheel sets can be controlled to be attached, and the belts of the two belt wheel sets can wrap a pipe to be dragged. The belt surfaces of the belts are provided with inwards-sunken traction grooves, and when the belt surfaces of the belts of the two belt wheel sets are attached, the two traction grooves are matched to form a traction channel matched with a to-be-dragged pipe. The pipe traction device has the beneficial effects that the distance between the belts of the two belt wheel sets is adjustable, the belt wheel sets are used for clamping and pulling a to-be-pulled pipe, the belts are soft, the belts can deform when making contact with the to-be-pulled pipe, the deformation degree of the to-be-pulled pipe when the to-be-pulled pipe is clamped is reduced, and then the product quality is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of pipe production, and in particular to a pipe production traction device. Background Art

[0002] When plastic pipes are produced, they are usually extruded by an extruder. The rear end of the plastic pipe is cooled by a cooling device and then solidified. The solidified part of the plastic pipe is pulled backward by a pulling device, thereby driving the pipe to continue to be formed.

[0003] However, the existing plastic pipe traction device is usually a crawler type, which clamps and pulls the plastic pipe through two upper and lower crawler devices. When actually traction of plastic pipes, it is necessary to first introduce one end of the plastic pipe into the plastic pipe traction device, and then clamp the plastic pipe with the crawler by controlling the hydraulic or air pressure, and then start the crawler traction. In this process, the introduced plastic pipe is often just discharged from the extruder, the material is relatively soft, and the crawler material is relatively hard, and the crawler stroke of the hydraulic or air pressure controlled plastic pipe traction machine is too large. When the plastic pipe is clamped, it is very easy to squeeze and deform the clamped part of the relatively soft plastic pipe at the moment of contact. That is to say, when clamping the plastic pipe, it is very easy to flatten the plastic pipe due to the excessive clamping speed or excessive displacement of the crawler, thereby damaging the product quality; if the crawler stroke is reduced, there is no good contact with the pipe, and the pipe cannot be pulled stably and effectively, and it is also easy to cause the pipe to shift sideways, resulting in poor traction effect. Summary of the invention

[0004] The object of the present invention is to provide a pipe production traction device to solve the problems raised in the above background technology.

[0005] The present invention is achieved through the following technical solutions: A pipe production traction device, comprising two pulley groups, the pulley group comprising a first pulley, a second pulley and a belt wound around the first pulley and the second pulley, and a preset spacing is set between the first pulley and the second pulley in the traction direction; The distance between the two groups of pulley assemblies is adjustable, so as to control the belt surfaces of the two groups of pulley assemblies to fit together, so that the belts of the two groups of pulley assemblies wrap around the pipe to be pulled; The belt surface of the belt is provided with an inwardly recessed traction groove. When the belt surfaces of the two groups of pulley groups are in contact with each other, the two traction grooves cooperate to form a traction channel adapted to the pipe to be pulled.

[0006] As a further improvement of the present invention, a plurality of clamping members are arranged between the first pulley and the second pulley, the clamping members are arranged at intervals, and the distance between two adjacent clamping members is smaller than the diameter of the clamping members, so that the clamping members apply a force to the belt to prevent the belt from deforming toward the inside of the belt.

[0007] As a further improvement of the present invention, the traction groove is arranged along the traction direction of the pipe to be pulled, each belt is arranged with at least two traction grooves along its width direction, and the width of the traction grooves arranged on the belt decreases successively along the width direction of the belt.

[0008] As a further improvement of the present invention, a limiting mechanism is arranged between the first pulley, the second pulley, the clamping member and the belt, and the limiting mechanism is used to limit the relative displacement between the first pulley, the second pulley, the clamping member and the belt along the width direction of the belt.

[0009] As a further improvement of the present invention, it further comprises a traction box, wherein a first adjustment device for adjusting the distance between the first pulley and the second pulley is arranged in the traction box.

[0010] As a further improvement of the present invention, a control device for controlling the two groups of pulleys to be displaced synchronously along the width direction of the belt is provided in the traction box.

[0011] As a further improvement of the present invention, the pulley group has an input end and an output end, and the output ends of the two pulley groups are provided with an export mechanism for exporting the pipe to be pulled. The export mechanism includes at least one pair of export wheels rotatably arranged at the output ends of the two pulley groups, and the wheel surface of the export wheel is provided with an inwardly concave export arc surface, and the export arc surfaces of the pair of export wheels cooperate with each other to form an outlet channel for the traction pipe to pass through.

[0012] As a further improvement of the present invention, the traction chassis is provided with a first synchronization control device which controls a pair of the export wheels to synchronously move closer to or farther away from each other.

[0013] As a further improvement of the present invention, the traction chassis is provided with a second synchronous control device for controlling a pair of the export wheels to synchronously shift along the width direction of the belt.

[0014] As a further improvement of the present invention, support rollers are laterally arranged at the output ends of the two pulley groups, the support rollers are rotatable, and support grooves for supporting the pipes to be pulled are opened in the middle of the support rollers.

[0015] Beneficial effects of the present invention: 1. In the present invention, the belt spacing between the two pulley groups is adjustable, which is used to clamp and pull the pipe to be pulled, and the belt itself is also relatively soft and can be deformed when it contacts the pipe to be pulled, so as to reduce the deformation degree of the pipe to be pulled when being clamped, thereby avoiding damage to product quality.

[0016] 2. There is a preset distance between the first pulley and the second pulley in the present invention, so that there is a sufficient distance between the belt and the pipe to be pulled for contact, so that the belt can stably and effectively pull the pipe to be pulled.

[0017] 3. The traction groove on the belt surface of the belt in the present invention is adapted to the pipe to be pulled. When the belts of the two pulley groups are in contact with each other, the pipe to be pulled is located in the traction groove, which further avoids the squeezing of the pipe to be pulled when the belts are close to each other and pressed against each other, so as to avoid the deformation of the pipe to be pulled; at the same time, the inner wall of the traction groove abuts against the side wall of the pipe to be pulled, so as to limit the displacement of the pipe to be pulled during the traction process.

[0018] 4. The traction groove is adapted to the pipe to be pulled, that is, the inner wall of the traction groove is in contact with the outer wall of the pipe to be pulled, thereby increasing the effective contact area between the belt and the pipe to be pulled. During the transportation process between the pipe to be pulled and the belt, the belt and the pipe to be pulled are actually in a relatively static state (the belt drives the pipe to be pulled to be pulled in the traction direction), and there is static friction between the two, and the static friction force is positively correlated with the contact area. Therefore, in the present invention, a traction groove is opened, and the groove surface of the traction groove is in contact with the outer wall of the pipe to be pulled, which can also increase the friction between the belt and the pipe to be pulled, thereby achieving stable and effective traction of the pipe to be pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein: Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the side and front structure of an embodiment of the present invention; Figure 3 A top view of an embodiment of the present invention; Figure 4 It is a schematic diagram of the side structure of an embodiment of the present invention; Figure 5 Schematic diagram of the internal structure of an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure when the belt is removed from the interior of an embodiment of the present invention.

[0020] Numbers in the figure: traction box 1, pipe inlet 2, pipe outlet 3, pulley group 4, working platform 5, first pulley 4011, second pulley 4012, belt 4013, mounting plate 6, traction groove 7, mounting seat 8, transmission seat 9, clamping piece 10, sliding groove 12, mounting roller 13, top seat 14, top rod 15, export wheel 16, adjustment seat 17, sliding seat 18, transmission rod 19, sliding seat 20, driving platform 21. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0023] refer to Figures 1 to 6 , the embodiments of the present invention disclose: A pipe production traction device includes a traction box 1, wherein both ends of the traction box 1 are provided with a pipe inlet 2 and a pipe outlet 3, and two groups of pulley groups 4 are provided in the traction box 1, wherein one group of pulley groups 401 is located below the other group of pulley groups 402, and the pipe to be traction passes between the two groups of pulley groups 4 along the traction direction (from the pipe inlet 2 to the pipe outlet 3). At the same time, in this embodiment, the spacing between the two groups of pulley groups 4 is adjustable, so that the two groups of pulley groups 4 clamp the pipe to be traction to traction the pipe to be traction; as shown in the figure, the traction box 1 is provided with a pulley group 401, wherein the pulley group 401 is located below the other group of pulley groups 402, and the pipe to be traction passes between the two groups of pulley groups 4 along the traction direction (from the pipe inlet 2 to the pipe outlet 3). A working platform 5 is arranged on the side, a group of pulley groups 401 is arranged on the working platform 5, and a group of telescopic cylinders / telescopic motors are fixedly arranged in the traction box 1 and above the working platform 5, the output end of the group of telescopic cylinders / telescopic motors faces downward, and the output ends are respectively connected to the two ends of another group of pulley groups 402, and the other group of pulley groups 402 is driven to rise and fall by the telescopic cylinders / telescopic motors, so as to control and adjust the distance between the two groups of pulley groups 4, and then control the two groups of pulley groups 4 to clamp the pipe to be pulled, so as to pull the pipe to be pulled.

[0024] Specifically, the pulley group 4 includes a first pulley 4011, a second pulley 4012 and a belt 4013 wound between the first pulley 4011 and the second pulley 4012. In the present embodiment, mounting plates 6 are provided on both sides of the pulley group 4. The first pulley 4011 and the second pulley 4012 are rotatably provided between the mounting plates 6 on both sides. A driving motor is provided on one side of the mounting plate 6. The output end of the driving motor is transmission-connected with the first pulley 4011 to drive the first pulley 4011 to rotate, and the first pulley 4011 drives the belt 4013 to move. In the present embodiment, since the spacing between the two groups of pulley groups 4 is adjustable, it can be used to control the belt surfaces of the belts 4013 of the two groups of pulley groups 4 to fit together. Moreover, since the belts 4013 are usually made of materials such as rubber, polyurethane, and polyester, elasticity can occur. Deformation, when the belts 4013 of the two groups of pulley groups 4 are in contact with each other and the pipe to be pulled is located between the belts 403 of the two groups of pulley groups 4, the part of the belt 4013 in contact with the pipe to be pulled is elastically deformed under force (the belt surface of the belt 4013 is recessed inward to form a deformation groove that matches the pipe to be pulled) to wrap the pipe to be pulled, so that the pipe to be pulled can be effectively fitted with the belt surface of the belt 4013 for stable and effective traction; and in this embodiment, the first pulley 4011 and the second pulley 4012 are set with a preset spacing along the traction direction of the pipe to be pulled (adjusted according to the actual needs of technical personnel in this field), so that there is sufficient distance between the pipe to be pulled and the belt 4013 for contact, and further stable and effective traction is performed on the pipe to be pulled.

[0025] However, since the first pulley 4011 and the second pulley 4012 are usually made of rigid materials such as cast iron, steel, and aluminum alloy, when the belts 4013 of the two pulley groups 4 are in contact, the portion of the belt 4013 that is in contact with the first pulley 4011 or the second pulley 4012 is supported by the first pulley 4011 or the second pulley 4012, and the deformation effect is affected, so that the deformation groove formed by the inward depression of the belt surface of the belt 4013 cannot completely wrap the pipe to be pulled, which makes it easy for the pipe to be pulled to be squeezed and deformed at this position, thereby damaging the product quality; based on this, In this embodiment, a traction groove 7 is provided on the belt surface of the belt 4013. When the belt surfaces of the belts 4013 of the two pulley groups 4 are in contact with each other, the two traction grooves 7 cooperate to form a traction channel adapted to the pipe to be pulled. In specific implementation, the inner diameter of the traction groove 7 is equal to the outer diameter of the pipe to be pulled. Through the above design, the pipe to be pulled is located in the traction groove 7. When the belts 4013 of the two pulley groups 4 are in contact with each other, the belt 4013 can drive the pipe to be pulled to move to achieve the traction function. At this time, due to the setting of the traction groove 7, the pipe to be pulled can be prevented from being moved on the belt 401. The part of the position that contacts the first pulley 4011 or the second pulley 4012 is squeezed and deformed; at the same time, due to the setting of the traction groove 7, the pipe to be pulled can be prevented from bending, lateral displacement, etc. during the transportation process; and when the belts 4013 on the upper and lower sides are fitted, the pipe to be pulled is located in the traction groove 7, which can avoid squeezing the pipe to be pulled during the fitting process of the belt 4013 and causing the pipe to be pulled to be deformed; in addition, since the traction groove 7 in this embodiment is adapted to the pipe to be pulled, that is, the inner wall is fitted with the outer wall of the pipe to be pulled, thereby increasing the belt 4 013 and the effective contact area between the pipe to be pulled, and during the transportation process between the pipe to be pulled and the belt 4013, the belt 4013 and the pipe to be pulled are actually in a relatively static state (the belt 4013 drives the pipe to be pulled to be transported in the traction direction), and there is static friction between the two, and the static friction force is positively correlated with the contact area. Therefore, in this embodiment, a traction groove 7 is opened, and the groove surface of the traction groove 7 contacts the outer wall of the pipe to be pulled, which can also increase the friction between the belt 4013 and the pipe to be pulled, thereby realizing stable and effective traction of the pipe to be pulled.

[0026] In this embodiment, the belt 4013 is wound between the first pulley 4011 and the second pulley 4012. However, since there is no device to support the middle part of the belt 4013, when the belts 4013 of the two pulley groups 4 are in contact with each other, the belts 4013 are easily deformed inward by force, so that the traction grooves 7 cannot be aligned and matched with each other, so that the pipe to be pulled cannot be effectively adapted to the traction channel, so that when the pulley group 4 is pulling the pipe to be pulled, the pipe to be pulled is still There will be a phenomenon of poor contact with the pulley group 4, ineffective traction, and deviation of the pipe to be pulled. Based on this, in this embodiment, a plurality of clamping members 10 are arranged between the first pulley 4011 and the second pulley 4012. In this embodiment, the clamping member 10 is a clamping wheel, which can be rotatably arranged between the mounting plates 6 on both sides and is located between the first pulley 4011 and the second pulley 4012 along the traction direction. In short, the belt 4013 is wound around the first pulley 4011, the clamping wheel and the second pulley On the upper belt pulley 4012, each clamping wheel is arranged at intervals, and the interval between two adjacent clamping wheels is smaller than the diameter of the clamping wheel, and the diameter of the clamping wheel is smaller than the diameter of the first belt pulley 4011 and the second belt pulley 4012, and each clamping wheel is at the same height. In this embodiment, the lowest point of the clamping wheel of the upper belt pulley group 4 is lower than the lowest points of the first belt pulley 4011 and the second belt pulley 4012 of the upper belt pulley group 4, and correspondingly, the highest point of the clamping wheel of the lower belt pulley group 4 is higher than the first belt pulley 4011 and the second belt pulley 4012 of the lower belt pulley group 4. 4012 is the highest point, so that the clamping member 10 applies a force to the belt 4013 to prevent the belt 4013 from deforming toward the inside of the belt 4013; through the above arrangement, when the two groups of pulley groups 4 are close to each other and the two belts 4013 are in contact with each other and clamped to pull the pipe to be pulled, the clamping wheel presses against the inside of the belt 4013, thereby applying a force to the belt 4013 to prevent the belt 4013 from deforming toward the inside of the belt 4013, so as to prevent the pipe to be pulled from having poor contact with the belt 4013 and the pipe to be pulled from being offset.

[0027] However, the existing pipes to be towed usually have multiple sizes, while the traction groove 7 has only one size, which makes the device unable to adapt to pipes to be towed of multiple sizes, and makes the application scenario of the device single. Based on this, in the present embodiment, the traction groove 7 is arranged along the traction direction of the pipe to be towed, and each belt 4013 is arranged with at least two traction grooves 7 along its width direction, and the groove width of the traction groove 7 arranged on the belt 4013 decreases successively along the width direction of the belt, and the groove width of each traction groove 7 is adapted to pipes of different sizes, so that at least two traction grooves 7 are arranged on the surface of the belt 4013 to adapt to pipes of different sizes to be towed.

[0028] In addition, in the present embodiment, the two groups of pulley groups 4 can be synchronously displaced along the width direction of the belt 4013, and the traction box 1 is provided with a control device for controlling the two groups of pulley groups 4 to be synchronously displaced along the width direction of the belt 4013, so that the traction groove 7 can be adjusted during the traction process, so that the position of the traction groove 7 is adapted to the pipe to be towed. Specifically, the control device includes: pulleys and slide rails are provided at the lower ends of both sides of the traction box 1, the slide rails are used to be installed on the ground of the workplace, the pulleys can be rotatably provided on the traction box 1, and the pulleys are slidably provided on the slide rails, and a driving device is provided at the middle position of the lower side of the traction box 1, the driving device The driving device includes a mounting seat 8 arranged along the width direction of the belt 4013, and a screw rod is rotatably arranged on the mounting seat 8. The screw rod extends along the width direction of the belt 4013, and a driving motor is arranged on the mounting seat 8 and is connected to the screw rod to drive the screw rod to rotate. A transmission seat 9 is arranged in the middle position of the lower side of the traction chassis 1, and the transmission seat 9 is connected to the screw rod so that when the screw rod rotates, it drives the transmission seat 9 to move along the width direction of the belt 4013, and then drives the traction chassis 1 to move along the width direction of the belt 4013, so as to drive the two groups of pulley groups 4 to synchronously displace along the width direction of the belt 4013, so that the coffin to be towed can be aligned with the traction groove 7 adapted thereto.

[0029] During long-term use of belt 4013, belt 4013 may deviate relative to first pulley 4011 and second pulley 4012, so that the traction grooves 7 of belt 4013 of upper and lower pulley groups 4 cannot be relatively aligned to form a traction channel, which will also cause the pipe to be towed to deviate, affecting product quality. Based on this, in the present embodiment, a limiting mechanism is provided between the first pulley 4011, the second pulley 4012 and the clamping member 10 and the belt 4013, and the limiting mechanism is used to limit the relative displacement between the first pulley 4011, the second pulley 4012 and the clamping member 10 and the belt 4013 along the width direction of the belt 4013. Specifically, as shown in the figure, in the present embodiment, the first pulley 4011, the second pulley 4012 and the clamping wheel surface are evenly provided with limiting grooves, and the inner wall of the belt 4013 is provided with a limiting protrusion adapted to the limiting groove, which is stuck in the limiting groove to prevent the belt 4013 from relative displacement along the width direction of the belt 4013.

[0030] In addition, during the installation process, the limiting protrusion of the belt 4013 needs to correspond to the limiting groove. At the same time, during use, the tightness of the belt 4013 needs to be adjusted so that the belt 4013 can adapt to different pipes to be towed. In order to facilitate the installation of the belt 4013, the distance between the first pulley 4011 and the second pulley 4012 is adjustable. The traction box (1) is provided with a first adjustment device for adjusting the distance between the first pulley 4011 and the second pulley 4012. The first adjustment device is specifically shown in the figure. In this embodiment, a sliding groove 12 is provided at one end of the mounting plate 6. The sliding groove 12 extends along the traction direction. A mounting roller 13 is provided between the sliding grooves 12 of the mounting plates 6 on both sides. The second pulley 4012 can be rotatably arranged on the mounting roller 13. The mounting roller 13 can be slidably arranged on the sliding groove 12 so that the second pulley 4 012 can slide in the traction direction, and a push seat 14 is arranged on the side wall of the mounting plate 6, and a push rod 15 is arranged on the push seat 14, and the push rod 15 is a screw rod, and the push rod 15 passes through the push seat 14, and the push rod 15 and the push seat 14 are matched with each other by threads; during installation, the belt 4013 is wound between the first pulley 4011 and the second pulley 4012, and when the belt 4013 is in a tensioned state, it applies a force to the second pulley 4012 to move in the sliding direction, and at this time, the other end of the push rod 15 abuts against the end of the mounting roller 13 to limit the mounting roller 13 from continuing to slide in the traction direction, and when it is necessary to adjust the tightness of the belt 4013, the push rod 15 is rotated to make the push rod 15 move in the traction direction, and at this time, the second pulley 4012 is acted upon by the belt 4013 and moves in the traction direction following the push rod 15, thereby realizing the function of adjusting the tightness of the belt 4013.

[0031] In this embodiment, the pulley group 4 has an input end and an output end, and the output ends of the two pulley groups 4 are provided with an export mechanism for exporting the pipe to be pulled. The export mechanism includes at least one pair of export wheels 16 rotatably arranged at the output ends of the two pulley groups 4. Specifically, the export wheel 16 is rotatably arranged at the pipe outlet 3 of the traction box 1, wherein the wheel surface of the export wheel 16 is provided with an inwardly concave export arc surface, and the export arc surfaces of the pair of export wheels 16 cooperate with each other to form an outlet channel for the pipe to be pulled to pass through, and the outlet channel is aligned with the output end of the traction channel, so that the pipe to be pulled can be exported through the outlet channel after passing through the belt 4013.

[0032] Since in the present embodiment, at least two traction grooves 7 are provided on the belt 4013 for traction of pipes of different sizes to be traction, correspondingly, pipes of different sizes to be traction are no longer adapted to the outlet channel. Based on this, in the present embodiment, the traction chassis 1 is provided with a second synchronization control device for controlling a pair of the export wheels 16 to synchronously shift along the width direction of the belt 4013, so that the pair of export wheels 16 can synchronously approach or move away from each other, thereby making the export arc spacing of the pair of export wheels 16 adjustable, that is, the outlet channel can be adjusted, so that the outlet channel is adapted to the pipe to be traction for the pipe to be traction to pass through; specifically in the present embodiment, the traction chassis 1 has an adjustment seat 17 provided on one side of the pipe outlet 3, and a slide rail is provided on the adjustment seat 17, and two slide rails are provided on the slide rails. A sliding seat 18 is provided, and mounting plates 6 are provided on the adjustment seat 17 at both ends of the slide rail, a transmission rod 19 is provided between the mounting plates 6 on both sides, and the transmission rod 19 passes through the two adjustment seats 17. At the same time, the transmission rod 19 and the adjustment seat 17 are matched by threads, and the part of the transmission rod 19 located between the mounting plates 6 on both sides is provided with a first threaded portion and a second threaded portion extending from the middle to both ends, and the first threaded portion and the second threaded portion are arranged in opposite threads, so that when the transmission rod 19 rotates, the two adjustment seats 17 are driven to slide, and the two adjustment seats 17 are synchronously approached or moved away from each other, and the two export wheels 16 in this embodiment are rotatably arranged on the two adjustment seats 17 respectively; in addition, one end of the transmission rod 19 passes through the mounting plate 6 to connect the handwheel, so as to facilitate the user to rotate and control the transmission rod 19.

[0033] Correspondingly, in the present embodiment, since at least two traction grooves 7 are provided on the belt 4013, and there is only one outlet channel, when traction is performed on pipes of different sizes to be tractioned, it is necessary to adjust the outlet channel to correspond to different traction grooves 7. Therefore, in the present embodiment, in order to align the outlet channel with the traction groove 7 for traction of the pipe to be tractioned, a pair of guide wheels 16 can be synchronously displaced along the width direction of the belt 4013. Specifically, a second synchronous control device for controlling the synchronous displacement of the two groups of pulley groups 4 along the width direction of the belt 4013 is provided in the traction chassis 1. The second synchronous control device in the present embodiment It includes that the adjustment seat 17 can be arranged on the traction box 1 along the width direction of the belt 4013, the traction box 1 is provided with a sliding seat 20, the adjustment seat 17 is slidably arranged on the sliding seat 20, and a screw adjustment assembly is arranged at the lower end of the sliding seat 20. The screw adjustment assembly includes a screw that is rotatably arranged on the sliding seat 20 and located at the lower side of the adjustment seat 17, and a driving platform 21 is arranged on the lower side of the adjustment seat 17. The screw passes through the driving platform 21 and is connected to the driving platform 21 by threaded cooperation, so that when the screw rotates, it can drive the adjustment seat 17 to slide on the sliding seat 20, and the other end of the screw is transmission-connected to a driving motor to drive the screw to rotate through the driving motor.

[0034] In addition, support rollers are laterally arranged at the output ends of the two pulley groups 4. Specifically, the support rollers are rotatably arranged at the pipe outlet 3 of the traction chassis 1, and a support groove for supporting the pipe to be towed is opened in the middle of the support rollers.

[0035] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A pipe production traction device, characterized in that: The invention comprises two pulley groups (4), wherein the pulley group (4) comprises a first pulley (4011), a second pulley (4012), and a belt (4013) wound around the first pulley (4011) and the second pulley (4012), and a preset spacing is provided between the first pulley (4011) and the second pulley (4012) in the traction direction; The distance between the two groups of pulley assemblies (4) is adjustable, so as to control the belt surfaces of the belts (4013) of the two groups of pulley assemblies (4) to fit together, so that the belts (4013) of the two groups of pulley assemblies (4) wrap the pipe to be pulled; The belt surface of the belt (4013) is provided with an inwardly recessed traction groove (7). When the belt surfaces of the belts (4013) of the two groups of pulley groups (4) are in contact with each other, the two traction grooves (7) cooperate to form a traction channel that is compatible with the pipe to be pulled.

2. A pipe production traction device according to claim 1, characterized in that: A plurality of clamping members (10) are arranged between the first pulley (4011) and the second pulley (4012), and the clamping members (10) are arranged at intervals, and the distance between two adjacent clamping members (10) is smaller than the diameter of the clamping members (10), so that the clamping members (10) exert a force on the belt (4013) to prevent the belt (4013) from deforming inwardly of the belt (4013).

3. A pipe production traction device according to claim 2, characterized in that: The traction groove (7) is arranged along the traction direction of the pipe to be towed, and each belt (4013) is arranged with at least two traction grooves (7) along its width direction, and the width of the traction grooves (7) arranged on the belt (4013) decreases successively along the width direction of the belt (4013).

4. A pipe production traction device according to claim 3, characterized in that: A limiting mechanism is provided on the belt (4013), and the limiting mechanism is used to limit relative displacement between the first pulley (4011), the second pulley (4012), the pressing member (10) and the belt (4013) along the width direction of the belt (4013).

5. A pipe production traction device according to claim 4, characterized in that: It also comprises a traction box (1), wherein a first adjustment device for adjusting the distance between the first pulley (4011) and the second pulley (4012) is arranged inside the traction box (1).

6. A pipe production traction device according to claim 5, characterized in that: The traction machine box (1) is provided with a control device for controlling the two groups of pulley groups (4) to synchronously move along the width direction of the belt (4013).

7. A pipe production traction device according to claim 5, characterized in that: The pulley group (4) has an input end and an output end. The output ends of the two pulley groups (4) are provided with an output mechanism for outputting the pipe to be pulled. The output mechanism comprises at least one pair of output wheels (16) rotatably arranged at the output ends of the two pulley groups (4). The wheel surface of the output wheel (16) is provided with an inwardly concave output arc surface. The output arc surfaces of the pair of output wheels (16) cooperate with each other to form an output channel for the pulled pipe to pass through.

8. A pipe production traction device according to claim 7, characterized in that: The traction machine box (1) is provided with a first synchronization control device for controlling a pair of the export wheels (16) to synchronously move closer to or farther from each other.

9. A pipe production traction device according to claim 7, characterized in that: The traction machine box (1) is provided with a second synchronous control device for controlling a pair of the export wheels (16) to synchronously move along the width direction of the belt (4013).

10. A pipe production traction device according to claim 9, characterized in that: Support rollers are arranged transversely at the output ends of the two pulley groups (4); the support rollers are rotatable and a support groove for supporting the pipe to be pulled is provided in the middle of the support rollers.

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