Thickness measuring device for spraying high-strength polyethylene thermal insulation pipe

Abstract

The invention relates to the technical field of thickness measurement, in particular to a thickness measuring device for high-strength polyethylene thermal insulation pipe spraying, which comprises a base, and each group of fastening mechanism comprises a mounting seat, a base disc, an inner support rod, a first drive and a second drive; the multiple inner supporting rods can expand and contract through a first drive. The second driver is used for driving the inner supporting rod tightly jacked by the inner support and the thermal insulation pipe to be a whole; the mounting seat of the right fastening mechanism can move left and right through axial driving; the measuring mechanism comprises a fixed seat, a hydraulic cylinder, a base, a measuring rod, a measuring ring and an LED display screen; the fixed seat is of a lateral concave structure and completes left-right reciprocating motion operation through measurement driving. The measuring ring comprises two semi-ring structures which are symmetrically distributed up and down; a plurality of infrared distance measuring sensors which are annularly and uniformly distributed are also arranged on the inner side wall of the semi-ring; on the basis of reasonably utilizing resources and saving space, the integrated operation of efficient and comprehensive spraying and automatic thickness measurement is completed, and the device is more practical.

Description

Technical Field

[0001] The invention relates to the technical field of thickness measurement, and in particular to a thickness measuring device for spraying high-strength polyethylene thermal insulation pipes. Background Art

[0002] High-strength polyethylene shell prefabricated direct buried insulation pipe is referred to as high-strength polyethylene insulation pipe. It has three layers from inside to outside. The first layer: working steel pipe layer. According to the design and customer requirements, seamless pipe (GB / T8163-2018), spiral welded pipe (GB / T9711-2017) and straight seam welded pipe (GB / T 3091-2015) are generally selected. After the surface of the steel pipe is treated with advanced shot blasting and rust removal technology, the rust removal level of the steel pipe can reach Sa2 level in GB / T8923.1-2011 standard, and the surface roughness can reach R=12.5 microns in GB / T6060.32008 standard. The second layer: polyurethane insulation layer, which is formed by injecting hard polyurethane foam plastic stock solution into the cavity formed between the steel pipe and the outer sheath at one time using a high-pressure foaming machine. That is, it is commonly known as the "tube-in-tube foaming process". Its functions are heat preservation, waterproofing, and supporting the deadweight of the heating network. When the temperature of the conveying medium is: -50°C-120°C, use hard polyurethane formate foam plastic as the insulation layer, when the temperature of the conveying medium is: -50°C-150°C, use hard polyurethane foam plastic as the insulation layer. The third layer: high-density polyethylene protective layer, prefabricated into a black (yellow) plastic pipe with a certain wall thickness, which is used after corona treatment. Its function is to protect the polyurethane insulation layer from mechanical damage and to prevent corrosion and waterproof. However, the traditional technology for measuring the spray thickness of the insulation pipe is to arrange quality inspectors to use measuring tools to measure the points one by one. This method is time-consuming and labor-intensive, and the use effect is not good.

[0003] A query of the disclosed prior art "CN109029275 A, a device for measuring the spray thickness of an insulation pipe" records that "the present invention provides a device for measuring the spray thickness of an insulation pipe, comprising a support frame arranged directly above a steel pipe, a base plate provided in the middle of the support frame, a vertically arranged grating scale provided on the base plate, a vernier block of the grating scale fixedly connected to the top of a connecting rod, a universal ball provided at the bottom end of the connecting rod, a linear bearing provided on the base plate, and the connecting rod slides on the linear bearing. The present invention provides a device for measuring the spray thickness of an insulation pipe, which is used in conjunction with a base plate, a grating scale, a connecting rod and a universal ball; it can realize automatic and continuous detection of the thickness of the spray layer of the insulation pipe, and has the characteristics of high degree of automation, good precision and effectively improved detection efficiency."

[0004] However, the measuring device of the above-mentioned prior art still has the following disadvantages: First, for the spraying operation of the high-strength polyethylene insulation pipe, including the premise of the subsequent thickness measurement operation, it is necessary to ensure the horizontality of the base foundation in order to ensure the processing quality of the subsequent processing procedures. The ground flatness of different plant areas will change with the different years of use. The measuring device of the above-mentioned prior art lacks effective horizontal adjustment, and it is difficult to ensure the level of the base foundation, and it cannot be widely used in various ground support installation situations. Second, the measuring device of the above-mentioned prior art can realize the automatic and continuous detection of the thickness of the spray layer of the insulation pipe through the cooperation of the grating ruler, the connecting rod and the universal ball, but the structural use effect is not good. Further analysis shows that in the traditional insulation pipe processing process, an independent spraying process is generally set up, and a movable quality inspector is assisted to measure the thickness, and there is no need to set up additional space for the measurement process; therefore, although the measuring device of the above-mentioned prior art solves the problem of automatic and continuous detection to a certain extent, it requires additional space to realize the operation of insulation pipe transportation + measurement, that is, it is impossible to achieve the integrated operation of efficient and comprehensive spraying + automatic thickness measurement on the basis of reasonable use of resources and space saving, resulting in low efficiency of insulation pipe spraying-thickness measurement. Therefore, we need a thickness measuring device for high-strength polyethylene insulation pipe spraying. Summary of the invention

[0005] In order to solve the above-mentioned shortcomings and deficiencies in the use of the prior art insulation pipe spray thickness measuring device, the present invention provides a high-strength polyethylene insulation pipe spray thickness measuring device which can achieve the integrated operation of efficient and comprehensive spraying + automatic thickness measurement on the basis of rational use of resources and saving space, and improve the insulation pipe spray thickness measurement efficiency and measurement accuracy.

[0006] The present invention adopts the following technical scheme to achieve the above-mentioned purpose: a thickness measuring device for high-strength polyethylene insulation pipe spraying, including a base, which is distributed on the left and right, and two groups of fastening mechanisms distributed symmetrically on the left and right are arranged on the base; each group of the fastening mechanisms includes a mounting seat, a base plate, an inner support rod, a first drive and a second drive; the mounting seat is an L-shaped structure and is arranged on the upper end surface of the base; the base plate is circular and rotatably arranged on one side of the mounting seat; the plurality of inner support rods can realize expansion and contraction movements through the first drive to complete the inner support tightening loading and unloading operations of the insulation pipe; the second drive is used to drive the inner support rod and the insulation pipe as a whole to rotate at a preset speed after the inner support is tightened to complete a uniform spraying operation; the mounting seat of the fastening mechanism on the right side can complete left and right movement through axial drive to adjust and complete the fastening operation of insulation pipes of different specifications and lengths; A measuring mechanism is also provided on one side of the base, and the measuring mechanism includes a fixed seat, a hydraulic cylinder, a base, a measuring rod, a measuring ring and an LED display screen; the fixed seat is a lateral concave structure, and the left and right reciprocating movement operation is completed by measuring drive; the hydraulic cylinder is vertically distributed and one end is arranged on the fixed seat, and the other end is connected to the base; the measuring rod is arranged and distributed, and one end is connected to the base and the other end is connected to the measuring ring, and the measuring ring includes two semi-ring structures symmetrically distributed up and down, and one side of the two semi-rings is hinged, and the other side is connected by a fastening bolt; the inner side wall of the semi-ring is also provided with a plurality of infrared ranging sensors evenly distributed in a ring; the LED display screen is arranged on the fixed seat, and has the functions of data display, data storage and thickness data abnormality alarm; the LED display screen maintains a signal connection with the infrared ranging sensor; a spray part is also provided on one side of the fixed seat.

[0007] As a preferred technical solution: a horizontal detection component is also provided at the lower end of the base, and the horizontal detection component includes a hydraulic telescopic column, a control switch and a level; the hydraulic telescopic column is vertically distributed, and one end is connected to the base by welding, and the other end is connected to a supporting foot, and the outer diameter of the supporting foot is large enough; the control switch is arranged on the front side of the base, and the control switch maintains signal connection with the level and the hydraulic telescopic column respectively.

[0008] A further preferred technical solution: the level includes an axial level distributed axially on the base and a radial level distributed radially on the base.

[0009] As a preferred technical solution: the first drive includes a first motor, a first shaft, a main gear, a linkage arm, and a support frame; the first motor is fixedly installed on the base plate through a bracket; the first shaft is connected and installed on the first motor in a left-right distributed manner, and the central axis of the first shaft and the central axis of the hydraulic cylinder are kept in the same vertical plane; the support frame is fixedly connected to the base plate through a connecting rod; the main gear is sleeved and installed on the first shaft and is located on the support frame; the linkage arm is mainly composed of an integrally formed support plate and an inner plate; the inner plate is a circular structure and is rotatably arranged on the support frame; the support plate is a fan-shaped structure, and one side of the smaller outer end is connected and fixed to the inner support rod, and one side of the inner plate is also provided with semicircularly distributed transmission teeth, and the main gear and the transmission teeth maintain meshing transmission.

[0010] A further preferred technical solution: the support frame includes an outer support ring, an inner support ring and a support shaft; the outer support ring and the inner support ring are connected and fixed by a plurality of annularly evenly distributed support shafts; the inner plate is mounted on the support shaft via a bearing.

[0011] A further preferred technical solution is that the support shaft, linkage arm and inner support rod are three groups which are matched and evenly distributed in a ring.

[0012] A further preferred technical solution: the second drive includes a second motor, a main wheel, a secondary wheel and a rotating shaft; the second motor is fixedly mounted on a mounting seat through a bracket; the main wheel is sleeved and mounted on the output shaft of the second motor; the rotating shaft is coaxially mounted on the base plate, and the secondary wheel is sleeved and mounted on the rotating shaft to maintain the main wheel and the secondary wheel in meshing transmission; the outer diameter of the secondary wheel is larger than the outer diameter of the main wheel.

[0013] A further preferred technical solution: the axial drive includes a side wing plate, an axial slide rail, an axial slider, and a hydraulic telescopic rod; the side wing plate is fixedly installed on the right side of the base, one end of the hydraulic telescopic rod is connected to the side wing plate, and the other end is fixedly connected to the mounting seat on the right side; the axial slide rails are distributed on the left and right sides of the base, the axial slider is fixedly installed on the bottom end of the mounting seat, and the axial slider is kept matched with the axial slide rail.

[0014] A further preferred technical solution: the measuring drive includes a measuring motor, an auxiliary plate, a rotating screw, a connecting block, a guide rail, and a guide block; the measuring motor is fixedly mounted on the base through a bracket, and the auxiliary plates are two symmetrically distributed on the left and right, and both are arranged on the rear side of the base; the rotating screw is rotatably arranged on the auxiliary plate, and one end is connected to the measuring motor; the connecting block is fixedly arranged at the lower end of the fixed seat, and maintains a threaded rotational connection with the rotating screw; the guide rails are distributed on the left and right of the base, the guide block is arranged on the base, and the guide block is kept movable left and right along the guide rails.

[0015] A further preferred technical solution: the spray part includes a spray pipe, a support rod, an electric push rod and a movable seat; the support rods are arranged in the middle of the base in a front-to-back distribution, and there are two of them distributed on the left and right; the movable seat is movably arranged on the support rod, and a fastening belt is arranged on the upper end surface; the spray pipe is long enough and is connected and fixed to the movable seat by the fastening belt; an electrostatic spray gun is arranged at the end of the spray pipe; one end of the electric push rod is connected to the fixed seat, and the other end is connected to the movable seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a reasonable structural design, adopts an integrated operation form of spraying + automatic thickness measurement, does not require additional space for the structural arrangement of transportation and thickness measurement, and replaces the manual measurement method of the prior art, simplifies the processing procedures, saves space, and has a compact structure. Compared with the spraying process and thickness measurement process of the same operation mode, it saves more than 50% of space and about 25% of materials, effectively reducing the manufacturing cost; at the same time, the first motor, the first shaft, the main gear, the linkage arm, and the support frame are further adopted to realize the expansion and contraction movement in the inner cavity of the insulation pipe, so as to realize the inner support, tightening, loading and unloading operations of the insulation pipe; The present invention simultaneously adopts the cooperation of the second motor, the main wheel, the secondary wheel and the rotating shaft, which can drive the inner support rod and the insulation pipe after the inner support is tightened to rotate at a preset speed as a whole to complete the uniform spraying operation, avoiding the problem that the traditional external clamping end cannot achieve comprehensive spraying, and there is no residual dead angle, thereby ensuring the uniformity and comprehensiveness of the spraying; further, the present invention adopts the cooperation of the hydraulic telescopic column, the control switch and the level meter to realize the horizontal adjustment of the base foundation, ensure the horizontality of the base foundation, and can be widely used in various ground support installation situations, which is more practical; the present invention realizes the integrated operation of efficient and comprehensive spraying + automatic thickness measurement on the basis of rational use of resources and saving space, which greatly improves the operating efficiency and measurement accuracy of the insulation pipe spray thickness measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 It is a front view of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the fastening mechanism of the present invention; Figure 4 is a structural diagram of the second drive of the present invention; Figure 5 is a schematic diagram of a support frame of the present invention; Figure 6 This is an enlarged view of the axial drive structure of the present invention; Figure 7 It is a schematic diagram of the structure of the measurement drive of the present invention; Figure 8 It is a structural front view of the measuring ring of the present invention; Fig. 9 It is a schematic structural diagram of the spray-coated part of the present invention.

[0019] In the figure: 1. base; 2. fastening mechanism; 21. mounting seat; 22. base plate; 23. inner support rod; 24. first drive; 25. second drive; 3. axial drive; 31. side wing plate; 32. axial slide rail; 33. axial slider; 34. hydraulic telescopic rod; 4. measuring mechanism; 41. fixing seat; 42. hydraulic cylinder; 43. base; 44. measuring rod; 45. measuring ring; 46. LED display; 47. half ring; 48. fastening bolt; 49. infrared ranging sensor; 5. spraying parts; 51. spraying pipe; 52. support rod; 53. electric push rod; 54. moving seat; 55. fastening belt; 56. electrostatic spray gun; 6. Horizontal detection member; 61. Hydraulic telescopic column; 62. Control switch; 63. Level; 64. Axial level; 65. Radial level; 66. Support foot; 70. First motor; 71. First shaft; 72. Main gear; 73. Linkage arm; 731. Support plate; 732. Inner plate; 732. Transmission gear; 74. Support frame; 741. Outer support ring; 742. Inner support ring; 743. Support shaft; 75. Connecting rod; 80. Second motor; 81. Main wheel; 82. Auxiliary wheel; 83. Rotating shaft; 9. Measuring drive; 91. Measuring motor; 92. Auxiliary plate; 93. Rotating screw; 94. Connecting block; 95. Guide rail; 96. Guide block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the specific implementation of the present invention, the possible terms such as "first" and "second" and other relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the possible terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the possible statements "including one" and other defined elements do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "provided with" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] Example: Figures 1 to 9 As shown: A thickness measuring device for high-strength polyethylene insulation pipe spraying, comprising a base 1, the base 1 is distributed on the left and right and serves as a support carrier. Figure 2As shown: the lower end of the base 1 is also provided with a horizontal detection member 6. In a preferred embodiment, the horizontal detection member 6 includes a hydraulic telescopic column 61, a control switch 62 and a level 63. The hydraulic telescopic column 61 is vertically distributed, and one end is connected to the base 1 by welding, and the other end is connected to a support foot 66. The outer diameter of the support foot 66 is large enough to form a good support stability. The control switch 62 is arranged on the front side of the base 1, and the control switch 62 maintains signal connection with the level 63 and the hydraulic telescopic column 61 respectively. The electricity required in this embodiment is connected to the external power supply through the main cable. The level 63 includes an axial level 63 arranged in the axial distribution of the base 1 and a radial level 63 arranged in the radial distribution of the base 1. With such a configuration, the real-time horizontality detection of the base can be realized through the axially and radially distributed levels. When the level detects that the base is tilted, it transmits a signal to the control switch. The control switch can be manual or have a built-in controller for automatic control. The control switch triggers a signal to the hydraulic telescopic column. There are four hydraulic telescopic columns. Therefore, the overall levelness of the base can be adjusted by controlling and adjusting the hydraulic telescopic columns at the corresponding positions.

[0024] With such arrangement, the present invention adopts the cooperation of hydraulic telescopic columns, control switches and levels to realize horizontal adjustment of the base foundation, ensure the horizontality of the base foundation, and can be widely applied to various ground support installation situations, so it is more practical. The present invention realizes the integrated operation of efficient and comprehensive spraying + automatic thickness measurement on the basis of rational use of resources and space saving, which greatly improves the operating efficiency and measurement accuracy of the insulation pipe spray thickness measurement.

[0025] like Figure 1 As shown: In this embodiment, two sets of fastening mechanisms 2 are symmetrically distributed on the base 1; preferably, in order to meet the spraying and measurement requirements of insulation pipes of different lengths, the two sets of fastening mechanisms can be set in a form of one set fixed and one set movable or both sets movable. In this embodiment, the fastening mechanism on the left side is preferably fixed, and the fastening mechanism on the right side is movable. Figure 3 As shown: Each group of the fastening mechanism 2 includes a mounting seat 21, a base plate 22, an inner support rod 23, a first drive 24 and a second drive 25. The mounting seat 21 is an L-shaped structure and is arranged on the upper end surface of the base 1. The base plate 22 is circular and rotatably arranged on one side of the mounting seat 21; specifically, the base plate is arranged on the vertical surface of the mounting seat. The plurality of inner support rods 23 can realize expansion and contraction movement through the first drive 24 to complete the inner support, tightening, loading and unloading operations of the insulation pipe; the inner support rods are used to inner support and tighten the insulation pipe.

[0026] like Figure 5As shown: Preferably, the first drive 24 includes a first motor 70, a first shaft 71, a main gear 72, a linkage arm 73, and a support frame 74. The first motor 70 is fixedly mounted on the base plate 22 through a bracket; the first motor adopts a servo control motor, which is mainly used to realize the contraction and expansion movement of the inner support rod. The first shaft 71 is connected and installed on the first motor 70 in a left-right distributed manner, and the central axis of the first shaft 71 and the central axis of the hydraulic cylinder 42 are kept in the same vertical plane; the purpose of such a setting is to ensure that in the subsequent thickness measurement operation, the central axis of the measuring ring is always consistent with the central axis of the first shaft. The support frame 74 is fixedly connected to the base plate 22 through a connecting rod 75; the connecting rod itself is a left-right extending structure, one end of which is connected and fixed to the support frame, and the other end is connected and fixed to the base plate, and the purpose of such a setting is to ensure sufficient installation stability of the support frame. The main gear 72 is sleeved and installed on the first shaft 71 and is located at the center of the support frame 74. The linkage arm 73 is mainly composed of an integrally formed support plate 731 and an inner plate 732. Among them, the inner plate 732 is a circular structure and is rotatably arranged on the support frame 74; specifically, the inner plate is installed on the support shaft. The support plate 731 is a fan-shaped structure, and the smaller outer end is fixedly connected to the inner support rod 23. The purpose of such a setting is to facilitate contraction to form a smaller spatial structure, providing a strong foundation for the subsequent loading and unloading of the insulation pipe. A semicircularly distributed transmission tooth 732 is also provided on one side of the inner plate 732, and the main gear 72 and the transmission tooth 732 maintain meshing transmission. The purpose of such a setting is to drive the transmission teeth and the inner plate as a whole to rotate through the forward and reverse rotation of the main gear, so as to form the purpose of the support plate connecting the inner support rod to deflect inward - contract and expand outward - the inner support to tighten the insulation pipe.

[0027] Among them, in a preferred embodiment, as Figure 5As shown: the support frame 74 includes an outer support ring 741, an inner support ring 742 and a support shaft 743. The outer support ring 741 and the inner support ring 742 are connected and fixed by a plurality of support shafts 743 evenly distributed in an annular shape. The inner plate 732 is mounted on the support shaft 743 through a bearing. The outer support ring and the inner support ring are of the same structure, and the support shaft is added to form a frame support structure. Among them, the outer support ring is mainly composed of an outer ring, an inner ring and reinforcing ribs arranged between the outer ring and the inner ring. The inner ring is sleeved and installed on the first shaft, and a bearing is arranged at the connection between the two. The purpose of such arrangement is to ensure that the rotation of the first shaft does not affect the support frame. The support shaft 743, the linkage arm 73 and the inner support rod 23 are three groups that are matched and evenly distributed in an annular shape. With such an arrangement, the first motor starts to rotate forward, which will drive the first shaft to rotate clockwise, so the main gear on the first shaft will also rotate clockwise. The main gear will drive the rotation of the transmission gear meshing with it, that is, the main gear will drive the linkage arm and the inner support rod to rotate counterclockwise as a whole, that is, the inner support rod moves in the direction close to the first axis, and then forms a deflection movement of multiple inner support rods contracting inward, specifically deflecting with the support shaft as the fulcrum, which is the initial state of contraction before the insulation tube is loaded. When the insulation tube is sleeved on the inner support rod, the first motor starts to reverse and drives the first axis to rotate counterclockwise, that is, the main gear will drive the linkage arm and the inner support rod to rotate clockwise as a whole, that is, the inner support rod moves in the direction away from the first axis, and then forms a deflection movement of multiple inner support rods expanding outward, that is, the inner support is tightly fixed after the insulation tube is loaded. At this time, the insulation tube and the first driven inner support rod form an integrated structure, which provides a strong condition for the subsequent circular motion of the insulation tube to perform uniform spraying operations.

[0028] like Figure 4As shown: In this embodiment, the second drive 25 is used to drive the inner support rod 23 and the insulation pipe to rotate at a preset speed after the inner support is tightened to complete the uniform spraying operation. In a preferred technical solution, the second drive 25 includes a second motor 80, a main wheel 81, a secondary wheel 82 and a rotating shaft 83. The second motor 80 is fixedly mounted on the mounting seat 21 through a bracket; the second motor also adopts a servo control motor. The main wheel 81 is sleeved and installed on the output shaft of the second motor 80. The rotating shaft 83 is coaxially installed on the base plate 22, and the rotating shaft and the first shaft are separated on both sides of the base plate. Specifically, the first shaft is located on the inner side of the base plate, and the rotating shaft is located on the outer side of the base plate. The secondary wheel 82 is sleeved and installed on the rotating shaft 83, and the main wheel 81 and the secondary wheel 82 are kept in meshing transmission; the outer diameter of the secondary wheel 82 is larger than the outer diameter of the main wheel 81. With this arrangement, the start of the second motor will drive the main wheel to rotate synchronously. The diameter of the secondary wheel is larger than that of the main wheel. Therefore, the main wheel will drive the secondary wheel to achieve deceleration motion, that is, to ensure that the secondary wheel and the rotating shaft rotate at a relatively low speed as a whole; thereby further ensuring the low-speed rotation of the base plate and the insulation pipe as a whole, so as to improve the uniformity of the insulation pipe spraying. When the first motor is started, the second motor is turned off, and the base plate remains fixed. When the second motor is started, the first motor is turned off, and the base plate, the support frame and the insulation pipe rotate as a whole.

[0029] The present invention has a reasonable structural design and adopts an integrated operation form of spraying + automatic thickness measurement, without the need for additional space for the structural arrangement of transportation and thickness measurement. At the same time, it replaces the manual measurement method of the prior art, simplifies the processing procedures, saves space, and has a compact structure. Compared with the spraying process and thickness measurement process of the same operation method, it saves more than 50% of space and about 25% of materials, effectively reducing the manufacturing cost. At the same time, the first motor, the first shaft, the main gear, the linkage arm, and the support frame are further adopted to realize the expansion and contraction movement in the inner cavity of the insulation pipe, so as to realize the inner support and tightening loading and unloading operations of the insulation pipe. The present invention also adopts the cooperation of the second motor, the main wheel, the secondary wheel and the rotating shaft, which can drive the inner support rod and the insulation pipe as a whole after the inner support is tightened to rotate at a preset speed to complete the uniform spraying operation, avoiding the problem that the traditional external clamping end cannot achieve comprehensive spraying, and there is no residual dead angle, thereby ensuring the uniformity and comprehensiveness of the spraying.

[0030] like Figure 6As shown: In this embodiment, the mounting seat 21 of the fastening mechanism 2 on the right side can be moved left and right through the axial drive 3 to adjust the fastening operation of the insulation pipes of different specifications and lengths. Specifically, the axial drive 3 includes a side wing plate 31, an axial slide rail 32, an axial slider 33, and a hydraulic telescopic rod 34. The side wing plate 31 is fixedly installed on the right side of the base 1, specifically, the side wing plate is located in the middle of the right side of the base, and the two are fixed by welding. One end of the hydraulic telescopic rod 34 is connected to the side wing plate 31, and the other end is fixedly connected to the mounting seat 21 on the right side. The axial slide rail 32 is arranged on the base 1 in a left-right distribution, and the axial slider 33 is fixedly installed at the bottom end of the mounting seat 21, and the axial slider 33 is kept matched with the axial slide rail 32. There are also scale lines on the base, and the scale lines are kept parallel to the axial slide rail 32. The purpose of setting the scale lines is to facilitate accurate observation and precise position adjustment. When it is necessary to spray and measure a longer insulation pipe (compared to the insulation pipe of the previous processing series), the hydraulic telescopic rod is first contracted to drive the mounting seat of the right-side fastening mechanism to move to the right. When the insulation pipe reaches the specified position, it is first sleeved on the left-side support frame and the overall structure of the inner support rod. Then the hydraulic telescopic rod is extended to drive the mounting seat of the right-side fastening mechanism to move to the left, completing the support operation of the two ends of the insulation pipe on the fastening mechanisms on both sides. This arrangement can not only realize convenient loading and unloading operations, but also meet the integrated operation of spraying and thickness measurement operations of insulation pipes of different lengths, specifications and models.

[0031] like Figure 1 As shown: In this embodiment, a measuring mechanism 4 is also provided on one side of the base 1. In a preferred technical solution, the measuring mechanism 4 includes a fixing seat 41, a hydraulic cylinder 42, a base 43, a measuring rod 44, a measuring ring 45 and an LED display screen 46. The fixing seat 41 is a lateral concave structure, and the left and right reciprocating movement operation is completed by the measuring drive 9. Preferably, as Figure 7As shown: the measuring drive 9 includes a measuring motor 91, an auxiliary plate 92, a rotating lead screw 93, a connecting block 94, a guide rail 95, and a guide block 96. The measuring motor 91 is fixedly mounted on the base 1 through a bracket, wherein the measuring motor also adopts a servo control motor. The auxiliary plates 92 are two symmetrically distributed on the left and right sides, and are both arranged on the rear side of the base 1; such arrangement facilitates the installation of the rotating lead screw. The rotating lead screw 93 is rotatably arranged on the auxiliary plate 92, and one end is connected to the measuring motor 91; bearings are arranged at the connection between the rotating lead screw and the auxiliary plate to ensure a good rotation effect. The connecting block 94 is fixedly arranged at the lower end of the fixed seat 41, and is threadedly connected to the rotating lead screw 93; in this way, the two can form a "lead screw nut" structure, and the left and right movement of the connecting block and the fixed seat as a whole can be realized by the rotation operation of the rotating lead screw. The guide rails 95 are arranged on the base 1 in a left-right distribution, and the guide block 96 is arranged on the base 1, and the guide block 96 can be kept to move left and right along the guide rail 95; the purpose of such arrangement is to play a good guiding role.

[0032] Among them, the hydraulic cylinder 42 is vertically distributed and one end is arranged on the fixed seat 41, and the other end is connected to the base 43. The measuring rod 44 is arranged and distributed, and one end is connected to the base 43, and the other end is connected to the measuring ring 45. In a preferred technical solution, the measuring rod and the measuring ring are an integral structure, and the measuring rod and the base are detachably connected and fixed. In this way, on the basis of connection and fixation, it is also possible to facilitate the replacement of the overall measuring ring structure for maintenance and replacement operations when problems occur with the infrared ranging sensor in the measuring ring. Specifically, a square connecting protrusion is provided at the top of the measuring rod; a card slot for inserting the connecting protrusion is provided on the base, and the two are adapted for installation, and a strong magnet mother block is provided in the card slot, and a strong magnet sub-block is provided on one side of the connecting protrusion. In this way, the purpose of easy disassembly and installation and replacement can be achieved by matching the strong magnet sub-block with the strong magnet mother block. In this embodiment, if Figure 8As shown: the measuring ring 45 includes two semi-rings 47 structures symmetrically distributed in the upper and lower parts, and the two semi-rings 47 are hinged on one side and connected by a fastening bolt 48 on the other side; the measuring rod is located in the middle of the semi-ring. The inner wall of the semi-ring 47 is also provided with a plurality of infrared distance sensors 49 evenly distributed in a ring; thus, a plurality of sampling points can be formed. The LED display screen 46 is arranged on the fixing seat 41, and has the functions of data display, data storage and thickness data abnormality alarm. The LED display screen 46 maintains a signal connection with the infrared distance sensor 49; wherein, the infrared distance sensor adopts a high-precision millimeter-level infrared sensor. During a single thickness measurement operation of the insulation pipe, the plurality of infrared distance sensors in the measuring ring form a plurality of sampling points, and then the spraying thickness data detected by the sampling is transmitted to the LED display screen in real time, and the LED display screen is displayed in real time through a table. At the same time, the standard parameters of the spraying thickness of the insulation pipe are initialized and set through the LED display screen, and then when the infrared distance sensor detects that it exceeds or falls below the standard parameters, an abnormal thickness data alarm will appear, and the data will be marked in red. An alarm indicator light is also provided on one side of the LED display screen for voice alarm.

[0033] With such a setting, in the initial state, the hydraulic cylinder contracts, and the measuring ring is located at the upper part as a whole, which does not affect the spraying operation. At the same time, the diameter of the measuring ring is large enough. When the spraying operation of the insulation pipe is completed, the hydraulic cylinder descends and drives the measuring ring to the preset specified position, that is, the measuring ring is concentric with the first axis. Then the two half rings are connected and fixed by fastening bolts. At this time, multiple infrared ranging sensors are located on the outer side of the ring of the insulation pipe. The diversified thickness data collection can improve the data consistency of the thickness measurement, thereby improving the accuracy of the thickness measurement of the insulation pipe. The next step is to turn on the measurement motor to rotate forward, which will drive the rotating screw to rotate clockwise. Therefore, under the auxiliary cooperation and guidance of the guide rail and the guide block. The clockwise movement of the rotating screw will drive the connecting block and the fixed seat to move right as a whole, that is, drive the infrared ranging sensor to start moving from left to right along the insulation pipe, thereby completing the comprehensive and efficient spray thickness measurement operation of the insulation pipe. At the same time, the infrared ranging sensor can be set to an interval of 1s, 2s, 3s, etc. to realize the measurement of different standards of spray thickness of the insulation pipe. The longer the interval time, the larger the spacing between adjacent infrared ranging sensors' sampling detections.

[0034] like Figure 1 As shown: In this embodiment, a spraying member 5 is also provided on one side of the fixing seat 41. Specifically, as Fig. 9As shown: the spraying part 5 includes a spraying pipe 51, a support rod 52, an electric push rod 53 and a moving seat 54. The support rods 52 are arranged in the middle of the base 1 in a front-to-back distribution, and there are two of them distributed on the left and right sides; such a configuration is used to support the carrier. The moving seat 54 is movably arranged on the support rod 52, and a fastening belt 55 is arranged on the upper end surface. The spraying pipe 51 is long enough and has a hose structure. The spraying pipe is connected and fixed to the moving seat 54 through the fastening belt 55; the spraying pipe passes through the fixed seat, and the connection between the two is fixed by a fastening clamp. The purpose of such a configuration is to ensure that the position of the spraying pipe located in the fixed seat is fixed and the stability of the spraying is ensured. An electrostatic spray gun 56 is arranged at the end of the spraying pipe 51; such a configuration, the electrostatic spray gun is the main body of the core equipment for surface treatment, which uses a low-pressure high-atomization device and an electrostatic electric field force generated by an electrostatic generator to efficiently and quickly spray the paint to the surface of the coated object, so that the coated object can achieve perfect surface treatment. One end of the electric push rod 53 is connected to the fixed seat 41, and the other end is connected to the movable seat 54. The purpose of such a setting is that when facing different thickness spraying requirements of insulation pipes of different specifications and models, the electrostatic spray gun can be driven to approach or move away from the insulation pipe through the extension and contraction of the electric push rod, so as to adjust the best spraying position to improve the spraying effect of the insulation pipe, and provide powerful conditions for the subsequent efficient measurement of the spraying thickness.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thickness measuring device for high-strength polyethylene insulation pipe spraying, characterized in that: It includes a base, which is distributed on the left and right, and two groups of fastening mechanisms are symmetrically distributed on the left and right. Each group of the fastening mechanisms includes a mounting seat, a base plate, an inner support rod, a first drive and a second drive. The mounting seat is an L-shaped structure and is arranged on the upper end surface of the base. The base plate is circular and rotatably arranged on one side of the mounting seat. The plurality of inner support rods can realize expansion and contraction movements through the first drive to complete the inner support, tightening, loading and unloading operations of the insulation pipe. The second drive is used to drive the inner support rod and the insulation pipe after the inner support is tightened to rotate as a whole at a preset speed to complete a uniform spraying operation. The mounting seat of the fastening mechanism on the right side can complete the left and right movement through axial drive to adjust and complete the fastening operation of insulation pipes of different specifications and lengths. A measuring mechanism is also provided on one side of the base, and the measuring mechanism includes The invention comprises a fixed seat, a hydraulic cylinder, a base, a measuring rod, a measuring ring and an LED display screen; the fixed seat is a lateral concave structure, and the left and right reciprocating movement operation is completed by measuring drive; the hydraulic cylinder is vertically distributed and one end is arranged on the fixed seat, and the other end is connected to the base; the measuring rod is arranged and distributed and one end is connected to the base and the other end is connected to the measuring ring, and the measuring ring includes two semi-ring structures symmetrically distributed up and down, and the two semi-rings are hinged on one side and connected by fastening bolts on the other side; the inner side wall of the semi-ring is also provided with a plurality of infrared ranging sensors evenly distributed in an annular shape; the LED display screen is arranged on the fixed seat, and has the functions of data display, data storage and thickness data abnormality alarm; the LED display screen maintains signal connection with the infrared ranging sensor; a spraying part is also provided on one side of the fixed seat.

2. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 1, characterized in that: A level detection component is also provided at the lower end of the base, and the level detection component includes a hydraulic telescopic column, a control switch and a level; the hydraulic telescopic column is distributed vertically, and one end is connected to the base by welding, and the other end is connected to a supporting foot, and the outer diameter of the supporting foot is large enough; the control switch is arranged on the front side of the base, and the control switch maintains signal connection with the level and the hydraulic telescopic column respectively.

3. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 2, characterized in that: The level comprises an axial level arranged in the axial direction of the base and a radial level arranged in the radial direction of the base.

4. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 1, characterized in that: The first drive includes a first motor, a first shaft, a main gear, a linkage arm, and a support frame; the first motor is fixedly installed on the base plate through a bracket; the first shaft is connected and installed on the first motor in a left-right distributed manner, and the central axis of the first shaft and the central axis of the hydraulic cylinder are kept in the same vertical plane; the support frame is fixedly connected to the base plate through a connecting rod; the main gear is sleeved and installed on the first shaft and is located at the support frame; the linkage arm is mainly composed of an integrally formed support plate and an inner plate; the inner plate is a circular structure and is rotatably arranged on the support frame; the support plate is a fan-shaped structure, and one side of the smaller outer end is connected and fixed to the inner support rod, and one side of the inner plate is also provided with transmission teeth distributed in a semicircle, and the main gear and the transmission teeth maintain meshing transmission.

5. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 4, characterized in that: The support frame includes an outer support ring, an inner support ring and a support shaft; the outer support ring and the inner support ring are connected and fixed by a plurality of annularly evenly distributed support shafts; the inner plate is installed on the support shaft through a bearing.

6. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 5, characterized in that: The support shaft, linkage arm and inner support rod are three groups which are matched and evenly distributed in a ring.

7. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 6, characterized in that: The second drive includes a second motor, a main wheel, a secondary wheel and a rotating shaft; the second motor is fixedly mounted on the mounting seat through a bracket; the main wheel is sleeved and mounted on the output shaft of the second motor; the rotating shaft is coaxially mounted on the base plate, and the secondary wheel is sleeved and mounted on the rotating shaft to keep the main wheel and the secondary wheel engaged for transmission; the outer diameter of the secondary wheel is larger than the outer diameter of the main wheel.

8. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 7, characterized in that: The axial drive includes a side wing plate, an axial slide rail, an axial slider, and a hydraulic telescopic rod; the side wing plate is fixedly installed on the right side of the base, one end of the hydraulic telescopic rod is connected to the side wing plate, and the other end is fixedly connected to the mounting seat on the right side; the axial slide rails are distributed on the left and right sides of the base, the axial slider is fixedly installed on the bottom end of the mounting seat, and the axial slider is kept matched with the axial slide rail.

9. A thickness measuring device for high-strength polyethylene thermal insulation pipe spraying according to claim 8, characterized in that: The measuring drive includes a measuring motor, an auxiliary plate, a rotating screw, a connecting block, a guide rail, and a guide block; the measuring motor is fixedly mounted on the base through a bracket, and the auxiliary plates are two symmetrically distributed on the left and right and are both arranged on the rear side of the base; the rotating screw is rotatably arranged on the auxiliary plate, and one end is connected to the measuring motor; the connecting block is fixedly arranged at the lower end of the fixed seat, and maintains a threaded rotation connection with the rotating screw; the guide rails are distributed on the left and right of the base, and the guide block is arranged on the base, and the guide block is kept movable left and right along the guide rails.

10. The device for measuring the thickness of a high-strength polyethylene thermal insulation pipe sprayed according to claim 1, characterized in that: The spraying part includes a spraying tube, a support rod, an electric push rod and a moving seat; the support rods are arranged in the middle of the base in a front-to-back distribution, and there are two of them distributed in the left and right directions; the moving seat is movably arranged on the support rod, and a fastening belt is arranged on the upper end surface; the spraying tube is long enough, and is connected and fixed to the moving seat by the fastening belt; an electrostatic spray gun is arranged at the end of the spraying tube; one end of the electric push rod is connected to the fixed seat, and the other end is connected to the moving seat.

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