Supporting device for spraying outer pipe wall of hot-dip plastic steel pipe

Abstract

According to the supporting device for spraying the outer pipe wall of the hot-dip plastic steel pipe, a two-way telescopic cylinder is fixed to the middle of the upper end of a supporting frame, and the lower ends of two rotary supporting devices connected with the ends of telescopic rods at the two ends of the two-way telescopic cylinder correspondingly are installed on the supporting frame in a sliding mode; reducing type supporting assemblies matched with two pipe openings of a steel pipe correspondingly are installed on rotating parts on the inner sides of the upper ends of the two rotating supporting devices, and when the two-way telescopic cylinders drive the reducing type supporting assemblies to move inwards through the rotating supporting devices and abut against the inner walls of the pipe openings of the steel pipe, rotating supporting detachably and fixedly connected with the steel pipe is achieved. Wherein one rotary supporting device is provided with a rotary driving device connected with the rotary part of the rotary supporting device. The steel pipe spraying device overcomes the defects that a traditional supporting structure is single in spraying angle and the clamping portion of the outer pipe wall of a steel pipe cannot be sprayed, the position of the steel pipe does not need to be manually adjusted, the spraying position of the steel pipe is automatically adjusted, the spraying efficiency and quality are greatly improved, the steel pipe spraying period is shortened, and the machining cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hot dip plastic steel pipe technical field, concretely relates to a kind of support device for the outer tube wall spraying of hot dip plastic steel pipe. BACKGROUND

[0002] Hot dip plastic steel pipe is a new type of anticorrosive steel, adopts physical technology, and high molecular material is sprayed on the surface of steel pipe, and after plasticizing and solidification, high molecular material forms protective coating on the surface of steel pipe, and different types of high molecular material can be selected according to actual needs.

[0003] When hot dip plastic steel pipe is sprayed, the position of steel pipe needs to be fixed, so that stable processing effect is achieved, but many steel pipe support fixing devices on the market have relatively single structure, and can only play a supporting effect, and when hot dip plastic steel pipe is sprayed, steel pipe needs to be rotated so that the tube wall of steel pipe can be uniformly sprayed with high molecular material, the existing steel pipe support device has single processing angle and cannot automatically rotate steel pipe, so that workers need to hold spraying equipment to spray the tube wall of steel pipe at different angles, resulting in long processing time of steel pipe, reduced spraying efficiency of steel pipe, and the outer wall clamping and fixing structure of steel pipe has the disadvantage that the clamping part cannot be sprayed when the outer tube wall is sprayed, therefore, it is necessary to improve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem: provide a kind of support device for the outer tube wall spraying of hot dip plastic steel pipe, by the variable-diameter support assembly for being fixed in the driving of two-way support device in the inside of the two rotating support devices connected on support frame and being used for the inner wall of steel pipe orifice adaptation fixed connection, provide rotating support adjustment for the barrier-free spraying of the outer tube wall of hot dip plastic steel pipe, the position of steel pipe is automatically adjusted by rotating drive device, solve the disadvantage that the spraying angle of traditional support structure is single and the clamping part of the outer tube wall of steel pipe cannot be sprayed, without manually adjusting the position of steel pipe, the spraying position of steel pipe is automatically adjusted, greatly improve spraying efficiency and quality, reduce the difficulty of outer tube wall spraying, shorten steel pipe spraying period, reduce processing cost, and high in use value.

[0005] The utility model discloses a technical scheme: for hot dip plastic steel pipe outer tube wall spraying's supporting device, including support frame, the two -way telescopic cylinder is fixed with in the middle part of support frame upper end, and the lower end sliding of two respectively with the telescopic rod end of two -way telescopic cylinder both ends connection's rotary support device is installed on the support frame, two the rotary part of rotary support device upper end inboard is installed with the variable diameter type support subassembly that adapts respectively with the steel pipe two pipe orifices, and when two -way telescopic cylinder drives variable diameter type support subassembly to move inwards and is close to the steel pipe pipe orifice inner wall through rotary support device, realize with the detachable fixed connection of steel pipe rotatable support, one of rotary support device is installed with the rotary drive device that is connected with its rotary part and is used for through variable diameter type support subassembly drive steel pipe rotation.

[0006] Wherein, the rotary support device includes support vertical plate and slewing bearing, the lower end of the support vertical plate is slidingly installed on the upper end surface of the support frame, and the outer ring of the slewing bearing is fixed on the inner side wall of the upper end of the support vertical plate, and the inner ring of the slewing bearing is fixedly connected with the outer end of the variable diameter type support subassembly.

[0007] Further, the rotary drive device includes a servo motor and a gear, the servo motor is fixed on the outer wall of the upper end of one of the support vertical plates, and the output end of the servo motor is fixedly connected with the gear through the through hole in the upper end of the support vertical plate, and the gear is engaged with the inner ring of the slewing bearing on the same side.

[0008] Further, the variable diameter type support subassembly includes a taper sleeve, a tapered shaft, a spring and a pin shaft, the outer wall of the tapered shaft is adapted to the structure of the tapered hole of the taper sleeve, the inner end of the tapered shaft is located in the tapered hole of the taper sleeve, and the end plate fixedly connected with the outer end of the tapered shaft is detachably fixed on the end surface of the inner ring of the slewing bearing in the rotary support device on the same side, a plurality of radial stepped holes are uniformly distributed on the circumferential wall of the inner end of the taper sleeve, a spring is sleeved on the pin shaft penetrating through the radial stepped hole, one end of the spring is abutted on the stepped surface of the radial stepped hole, and the other end of the spring is abutted on the guide block, and when the taper sleeve moves inward to contact and position the end of the steel pipe, the tapered shaft is driven by the two-way telescopic cylinder to move inward to eject the pin shaft so that the arc-shaped plate at the end of the pin shaft abuts against the inner wall of the steel pipe, thereby achieving the fixed connection with the steel pipe.

[0009] Further, the taper sleeve is a T-shaped taper sleeve, the large diameter section of the taper sleeve is located outside the steel pipe, and the small diameter section of the taper sleeve is sleeved with a grommet in contact with the end surface of the pipe orifice of the steel pipe and abutting against the end surface of the large diameter section of the taper sleeve, and the outer diameter of the grommet is not greater than the outer diameter of the steel pipe.

[0010] Further, the inner end of the tapered shaft is fixedly connected with a baffle for positioning the sliding position of the guide block.

[0011] Further, the upper end surface of the support frame is provided with a T-shaped groove, and a T-shaped block fixed to the lower end of the support vertical plate of the rotating support device is matched with the T-shaped groove, and the two support vertical plates are moved towards or reversely under the cooperation of the T-shaped block and the T-shaped groove.

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

[0013] 1、 the technical scheme provides the rotating support condition for the variable-diameter support assembly for adapting and fixedly connecting with the inner wall of the pipe mouth of the steel pipe installed on the rotating support device, so that the rotating support of the steel pipe is realized, and the rotating position adjustment of the steel pipe is provided;

[0014] 2、 the technical scheme adopts the variable-diameter support assembly with the adjustable diameter of the connecting position matched with the inner wall of the pipe mouth of the steel pipe, provides the variable-diameter condition for the fixed connection and removal of the variable-diameter support assembly and the steel pipe, realizes the lossless connection with the inner hole wall of the steel pipe, and provides the connection condition for the barrier-free spraying of the outer pipe wall of the hot-dip plastic steel pipe;

[0015] 3、 the technical scheme provides the condition for the synchronous rotation of the conical shaft driven by the inner ring of the slewing bearing by arranging the gear engaged with the inner ring of the slewing bearing and the servo motor on one of the support vertical plates, so that the synchronous rotation under the driving of the steel pipe is realized, and the rotating position adjustment condition for the spraying of the outer wall of the steel pipe is provided;

[0016] 4、 the technical scheme has the advantages of simple structure, novel design, convenient and fast disassembly and assembly of the steel pipe, solves the defects of single spraying angle and the unspraying part of the outer pipe wall of the steel pipe in the traditional support structure, does not need to manually adjust the position of the steel pipe, the spraying position of the steel pipe is automatically adjusted, greatly improves the spraying efficiency and quality, reduces the spraying difficulty of the outer pipe wall, shortens the steel pipe spraying period, reduces the processing cost, and has high use value. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model structural schematic diagram. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described below. Figure 1 The technical scheme in the embodiments of the utility model will be described below.

[0019] It should be noted that, in this article, unless otherwise stated, it is understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation. The element defined by the statement "includes a..." does not exclude the presence of another identical element in the process, method, article or device including the element.

[0021] The support device for hot-dip plastic steel pipe outer wall spraying includes a support frame 1, a two-way telescopic cylinder 2 is fixed in the middle of the upper end of the support frame 1, and the lower ends of two rotating support devices respectively connected with the telescopic rod ends of the two ends of the two-way telescopic cylinder 2 are slidingly installed on the support frame 1. The rotating parts on the inner sides of the upper ends of the two rotating support devices are installed with variable-diameter support assemblies respectively matched with the two pipe openings of the steel pipe 3, and when the two-way telescopic cylinder 2 drives the variable-diameter support assemblies to move inward and abut against the inner walls of the pipe openings of the steel pipe 3 through the rotating support devices, the rotating support devices are realized to be detachably fixed and rotatably supported with the steel pipe 3. One of the rotating support devices is installed with a rotating drive device connected with the rotating part thereof and used to drive the steel pipe 3 to rotate through the variable-diameter support assemblies. In the above structure, the variable-diameter support assemblies detachably fixed and matched with the inner walls of the pipe openings of the steel pipe 3 are driven by the two rotating support devices slidingly connected on the support frame 1 to provide rotating support adjustment for the barrier-free spraying of the outer wall of the hot-dip plastic steel pipe 3. The position of the steel pipe 3 is automatically adjusted through the rotating drive device, which solves the drawbacks of single spraying angle and inability to spray the clamping part of the outer wall of the steel pipe 3 in the traditional support structure, and improves the spraying efficiency and quality of the steel pipe 3.

[0022] The specific structure of the rotating support device is as follows: the rotating support device comprises a support vertical plate 4 and a slewing bearing 5, the lower end of the support vertical plate 4 is slidingly installed on the upper end surface of the support frame 1, the outer ring of the slewing bearing 5 is fixed on the inner side wall of the upper end of the support vertical plate 4, and the inner ring of the slewing bearing 5 is fixedly connected with the outer end of the variable-diameter support assembly; in the above structure, the introduction of the slewing bearing 5 provides the variable-diameter support assembly with rotating support conditions and provides conditions for automatically driving the rotation after the rotating driving device is adaptively connected.

[0023] The specific structure of the rotating driving device is as follows: the rotating driving device comprises a servo motor 6 and a gear 7, the servo motor 6 is fixed on the outer wall of the upper end of one of the support vertical plates 4, the output end of the servo motor 6 is fixedly connected with the gear 7 through the through hole in the upper end of the support vertical plate 4, and the gear 7 is engaged with the inner ring of the slewing bearing 5 on the same side; in the above structure, after the servo motor 6 is started, the gear 7 is engaged with the teeth on the inner wall of the inner ring of the slewing bearing 5, the inner ring of the slewing bearing 5 is driven to rotate, the end plate 12 at the outer end of the tapered shaft 9 in the variable-diameter support assembly is fixedly connected with the end surface of the inner ring of the slewing bearing 5, and thus the rotation of the tapered shaft 9 is driven.

[0024] The specific structure of the variable-diameter support assembly is as follows: the variable-diameter support assembly comprises a tapered sleeve 8, a tapered shaft 9, a spring 11 and a pin shaft 10, the outer wall of the tapered shaft 9 is in a structure adapted to the tapered hole of the tapered sleeve 8, the inner end of the tapered shaft 9 is located in the tapered hole of the tapered sleeve 8, and the end plate 12 fixedly connected with the outer end of the tapered shaft 9 is detachably fixed on the end surface of the inner ring of the slewing bearing 5 in the rotating support device on the same side, so that the corresponding variable-diameter support assembly is selected according to the model of the steel pipe 3 and is fixedly connected with the slewing bearing 5, a plurality of radial stepped holes 13 are uniformly distributed on the circumferential wall of the inner end of the tapered sleeve 8, the pin shaft 10 penetrating through the radial stepped holes 13 is sleeved with the spring 11 having one end abutting against the stepped surface of the radial stepped hole 13, arc-shaped plates 14 adapted to the inner pipe wall of the steel pipe 3 and guide blocks 15 adapted to the guide grooves 16 on the corresponding positions of the outer wall of the tapered shaft 9 are respectively fixed on the two ends of the pin shaft 10, the other end of the spring 11 abuts against the guide block 15, and when the tapered sleeve 8 moves inward to be in contact with the end of the steel pipe 3, the tapered shaft 9 is driven by the two-way telescopic cylinder 2 to move inward to push the pin shaft 10 outwards, so that the arc-shaped plate 14 at the end of the pin shaft 10 abuts against the inner pipe wall of the steel pipe 3, and the steel pipe 3 is fixedly connected; wherein the adjustment of the diameter of the variable-diameter support assembly adapted to the position of the inner hole wall of the steel pipe 3 is adjusted by the size of the pin shaft 10 pushed outwards after the tapered shaft 9 moves inward.

[0025] In the structure, when the conical shaft 9 moves inward, the pin shaft 10 is pushed to move outward under the action of the conical outer wall of the conical shaft 9, at this time, the spring 11 is gradually compressed until the arc-shaped plate 14 abuts against the inner wall of the pipe opening of the steel pipe 3, and the two-way telescopic cylinder 2 stops moving, at this time, the steel pipe 3 is fixedly connected with the variable-diameter support assembly, and radial positioning is realized due to the matching structure of the guide block 15 and the guide groove 16, so that the conical shaft 9 drives the steel pipe 3 to rotate synchronously under the driving of the servo motor 6.

[0026] The specific positioning structure of the conical sleeve 8 is as follows: the conical sleeve 8 is a T-shaped conical sleeve, the large-diameter section of the conical sleeve 8 is located outside the steel pipe 3, the small-diameter section of the conical sleeve 8 is sleeved with a gasket ring 17 which is in contact with the end face of the pipe opening of the steel pipe 3 and abuts against the end face of the large-diameter section of the conical sleeve 8, and the outer diameter of the gasket ring 17 is not greater than the outer diameter of the steel pipe 3, the gasket ring 17 can separate the end of the steel pipe 3 from the large-diameter section of the conical sleeve 8, so as to avoid the contact between the two to affect the spraying quality of the end of the steel pipe 3; wherein the inner end of the conical shaft 9 is fixed with a baffle 20 for positioning the sliding position of the guide block 15, the baffle 20 is arranged on one side to avoid the guide block 15 from moving out of the guide groove 16, so as to ensure the compactness and stability of the structure, and on the other side, it is beneficial to the smooth movement of the conical shaft 9 and the conical sleeve 8 out of the steel pipe 3 when the conical shaft 9 moves outward.

[0027] The specific structure of the sliding connection between the lower end of the rotating support device and the support frame 1 is as follows: a T-shaped groove 18 is formed on the upper end face of the support frame 1, a T-shaped block 19 fixed to the lower end of the rotating support device is matched with the T-shaped groove 18, and the two-way telescopic cylinder 2 drives the two support vertical plates 4 to move towards or away from each other under the cooperation of the T-shaped block 19 and the T-shaped groove 18; in order to reduce the friction between the support vertical plates 4 and the support frame 1 when the support vertical plates 4 move towards each other, the bottom of the support vertical plate 4 can also be provided with a structure of rollers or bullseye universal wheels moving in the guide groove on the upper end face of the support frame 1, so as to optimize the sliding connection to rolling connection.

[0028] The technical solution has the advantages of simple structure, novel design, convenient and fast disassembly and assembly of the steel pipe, no need for manual adjustment of the position of the steel pipe, automatic adjustment of the spraying position of the steel pipe 3, greatly improved spraying efficiency and quality, reduced difficulty of spraying the outer pipe wall, shortened steel pipe 3 spraying cycle, reduced processing cost, and high use value.

[0029] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the involved claims.

[0030] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A support device for spraying the outer wall of hot-dip plastic-coated steel pipes, characterized in that: The system includes a support frame (1), with a bidirectional telescopic cylinder (2) fixed at the middle of the upper end of the support frame (1). The lower ends of two rotating support devices, which are respectively connected to the ends of the telescopic rods at both ends of the bidirectional telescopic cylinder (2), are slidably mounted on the support frame (1). The rotating parts on the inner side of the upper end of the two rotating support devices are equipped with variable diameter support components that are adapted to the two pipe openings of the steel pipe (3). When the bidirectional telescopic cylinder (2) drives the variable diameter support components to move inward and press against the inner wall of the pipe opening of the steel pipe (3) through the rotating support devices, it realizes the rotating support under the detachable fixed connection with the steel pipe (3). One of the rotating support devices is equipped with a rotary drive device connected to its rotating part and used to drive the steel pipe (3) to rotate through the variable diameter support components.

2. The support device for spraying the outer wall of hot-dip plastic-coated steel pipes according to claim 1, characterized in that: The rotating support device includes a support vertical plate (4) and a slewing bearing (5). The lower end of the support vertical plate (4) is slidably installed on the upper end face of the support frame (1), and the outer ring of the slewing bearing (5) is fixed on the inner side wall of the upper end of the support vertical plate (4). The inner ring of the slewing bearing (5) is fixedly connected to the outer end of the variable diameter support assembly.

3. The support device for spraying the outer wall of hot-dip plastic-coated steel pipes according to claim 2, characterized in that: The rotary drive device includes a servo motor (6) and a gear (7). The servo motor (6) is fixed on the upper outer wall of one of the supporting vertical plates (4), and the output end of the servo motor (6) passes through the through hole at the upper end of the supporting vertical plate (4) and is fixedly connected to the gear (7). The gear (7) meshes with the inner ring of the slewing bearing (5) on the same side.

4. The support device for spraying the outer wall of hot-dip plastic-coated steel pipes according to claim 1, characterized in that: The variable diameter support assembly includes a tapered sleeve (8), a tapered shaft (9), a spring (11), and a pin (10). The outer wall of the tapered shaft (9) is adapted to the tapered hole of the tapered sleeve (8). The inner end of the tapered shaft (9) is located in the tapered hole of the tapered sleeve (8), and the end plate (12) fixed to the outer end of the tapered shaft (9) is detachably fixed to the inner ring end face of the slewing bearing (5) in the rotating support device on the same side. Multiple radial stepped holes (13) are evenly distributed on the circumferential wall of the inner end of the tapered sleeve (8), and a pin (10) that passes through the radial stepped holes (13) is fitted with a pin that abuts against the radial stepped hole. The spring (11) on the step surface of the trapezoidal hole (13) has an arc plate (14) that is adapted to the inner wall of the steel pipe (3) and a guide block (15) that is adapted to the guide groove (16) on the outer wall of the tapered shaft (9) respectively. The other end of the spring (11) abuts against the guide block (15). When the tapered sleeve (8) moves inward to contact the end of the steel pipe (3), the tapered shaft (9) is driven inward by the bidirectional telescopic cylinder (2) to push out the pin (10) so that the arc plate (14) at its end abuts against the inner wall of the steel pipe (3) to achieve a fixed connection with the steel pipe (3).

5. The support device for spraying the outer wall of hot-dip plastic-coated steel pipe according to claim 4, characterized in that: The tapered sleeve (8) is a T-shaped tapered sleeve. The large diameter section of the tapered sleeve (8) is located outside the steel pipe (3). The small diameter section of the tapered sleeve (8) is fitted with a gasket (17) that contacts the end face of the pipe opening of the steel pipe (3) and abuts against the end face of the large diameter section of the tapered sleeve (8). The outer diameter of the gasket (17) is not greater than the outer diameter of the steel pipe (3).

6. The support device for spraying the outer wall of hot-dip plastic-coated steel pipe according to claim 5, characterized in that: The inner end of the tapered shaft (9) is fixed with a baffle (20) for positioning the sliding position of the guide block (15).

7. The support device for spraying the outer wall of hot-dip plastic-coated steel pipes according to any one of claims 1-6, characterized in that: The upper end face of the support frame (1) is provided with a T-shaped groove (18), and the T-shaped block (19) fixed to the lower end of the support vertical plate (4) in the rotating support device is adapted to the T-shaped groove (18). With the cooperation of the T-shaped block (19) and the T-shaped groove (18), the bidirectional telescopic cylinder (2) drives the two support vertical plates (4) to move towards each other or in opposite directions.

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