A prefabricated insulation pipe production device

Abstract

The present invention provides a prefabricated thermal insulation pipe production device, including a main frame, the left and right ends of the main frame are provided with the support positioning mechanism, the support positioning mechanism is provided with a working pipe, the outer side of the working pipe is provided with an outer protective layer, the molding mechanism is provided on the main frame, the molding mechanism includes a closing mechanism, a molding centering mechanism and a welding edge limiting mechanism, and the closing mechanism is provided in a plurality of pieces, and the plurality of closing mechanisms are arranged at equal intervals along the length direction of the frame assembly. In the present invention, during production, the sheet-like outer protective layer is closed into a tube shape and wrapped around the working pipe by the closing mechanism, and the working pipe and the outer protective layer are centered and positioned by the molding centering mechanism, and then the sheet-like sheet closed into a tube shape is welded from one end to the other end to form an outer protective pipe, and polyurethane is filled into the insulation layer space while the outer protective pipe is welded. Compared with the traditional process, there is no need to pre-produce the pipe shell, saving storage, transportation and management costs.

Description

Technical Field

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

[0002] Prefabricated insulated pipes are also called direct buried insulated pipes. There are two types of prefabricated insulated pipes: plastic-sheathed steel insulated pipes (high-density polyethylene direct buried insulated pipes) and steel-sheathed steel insulated pipes (high-temperature steam insulated pipes). Plastic-sheathed steel insulated pipes are made of a high-density polyethylene outer casing, a polyurethane foam insulation layer and an inner working steel pipe, or the insulation layer is changed to an aerogel insulation felt plus a polyurethane high-pressure foaming composite solution; steel-sheathed steel insulated pipes are made of an outer protective steel pipe plus a steel pipe anti-corrosion, a polyurethane foam insulation layer and an inner working steel pipe, or an aerogel insulation felt plus a polyurethane high-pressure foaming composite solution.

[0003] Prefabricated insulated pipes have excellent characteristics such as high efficiency insulation, waterproof, anti-corrosion, heat insulation, sound insulation, flame retardant, cold resistance, anti-corrosion, light capacity, high strength, simple and quick construction, and no fear of plant root thorns. They have become indispensable materials for insulation, waterproof plugging, sealing, etc. in industrial sectors such as construction, transportation, petroleum, chemical, electric power, and refrigeration. Direct buried insulated pipes are used for various indoor and outdoor pipelines, central heating pipelines, central air conditioning pipelines, chemical, pharmaceutical and other industrial pipelines, insulation, cold preservation projects, oil pipeline projects, steam pipeline projects, etc.

[0004] In the production process of prefabricated insulated pipes, the outer sheath is prefabricated and extruded in a tubular form in traditional production, and the outer sheath is in a closed tube state before the production of the insulation pipe. There are two methods for making traditional prefabricated insulated pipes: production with a bracket and production without a bracket. The production method with a bracket is: first install and fix the bracket on the working pipe, then put the outer sheath (tube) and the working pipe together, seal both ends, and fill the insulation layer space with polyurethane; the production method without a bracket is: put the outer sheath (tube) and the working pipe together, install a foaming platform to center and position the outer sheath and the working pipe, and then fill the insulation layer space with polyurethane; the above two production processes are to first position and fix the working pipe and the outer sheath, and then directly fill the reserved insulation layer space with insulation material. The difference between the two is whether a bracket is used to achieve centering and support of the outer sheath during the preparation process. The process deficiencies are as follows:

[0005] 1) The tube shells are all pre-produced. In order to prevent them from excessive deformation or damage, the space utilization rate during storage and transportation is extremely low, so the storage, transportation and management costs are high;

[0006] 2) Regardless of whether a bracket is used to complete the centering and support of the outer sheath, the preliminary preparation work is relatively cumbersome and the production efficiency is low;

[0007] 3) The insertion of the tube shell basically requires the help of special equipment, which requires a large production site and equipment investment. For example, if the working tube is 12 meters long, the length of the site required for inserting the tube shell must be greater than 24 meters;

[0008] 4) When using the side injection port to inject polyurethane, it is necessary to use a plug to seal it. Because the side injection port affects the overall protection effect and overall appearance of the outer protective tube, sometimes the injection port needs to be treated twice to achieve the required protection effect, which increases the production cost;

[0009] 5) This pouring process will affect the polyurethane foaming effect and filling quality. In order to achieve the required density and fullness of the insulation layer, a large amount of material has to be poured. Some of the material amounts are more than twice the theoretical value, but there are still problems such as poor foaming effect and inconsistent density. The utilization rate of polyurethane raw materials is low and the waste is great. Especially in the production of large-diameter insulation pipes, a 10% increase in the material amount may consume dozens of kilograms of insulation materials, which is even more wasteful.

[0010] In order to solve the problems that in the traditional production process, the insertion of the tube shell basically needs to be completed with the help of special equipment, which requires a large production site and equipment investment, and the tube shells are all pre-produced, and the space utilization rate during storage and transportation is extremely low to prevent them from excessive deformation or damage, so the storage, transportation and management costs are high, and there is a lack of safety protection mechanism and the safety of the device is low, the present invention provides a prefabricated insulation pipe production device. Summary of the invention

[0011] The present invention provides a prefabricated thermal insulation pipe production device, which is used to solve the problems that in the traditional production process, the insertion of the pipe shell basically needs to be completed with the help of special equipment, which requires a large production site and equipment investment, and the pipe shells are all pre-produced. In order to prevent them from excessive deformation or damage, the space utilization rate during storage and transportation is extremely low, so the storage, transportation and management costs are high, and there is a lack of safety protection mechanism, and the safety of the device is low.

[0012] In order to solve the above technical problems, the present invention discloses a prefabricated insulation pipe production device, including: a main frame, a support and positioning mechanism, a forming mechanism, a track mechanism, a walking trolley mechanism and a safety protection mechanism. The support and positioning mechanisms are arranged at both ends of the left and right ends of the main frame. A working pipe is arranged on the support and positioning mechanism, and an outer protective layer is arranged on the outside of the working pipe. The forming mechanism is arranged on the main frame, and the forming mechanism is located between the two support and positioning mechanisms. The forming mechanism includes a closing mechanism, a forming centering mechanism and a welding edge limiting mechanism. There are several closing mechanisms, and the several closing mechanisms are arranged at equal intervals along the length direction of the frame assembly. The track mechanism is arranged at the top of the forming mechanism, the walking trolley mechanism is slidably arranged on the track mechanism, and the safety protection mechanism is arranged on the main frame.

[0013] Preferably, the main frame includes two end frames, a frame assembly, a first connecting member and a second connecting member, the two end frames are arranged on the left and right sides of the frame assembly, the two end frames are respectively connected to the frame assembly through the second connecting member, the frame assembly is composed of a plurality of intermediate frames, and two adjacent intermediate frames are connected through the first connecting member.

[0014] Preferably, the support and positioning mechanism comprises:

[0015] A height adjustment mechanism, wherein the height adjustment mechanism is disposed in the two end frames, and the lower end of the height adjustment mechanism is fixedly connected to the upper end of the crossbar in the two end frames;

[0016] A support frame, wherein the lower end of the support frame is slidably connected to the upper end of the height adjustment mechanism, the upper end of the support frame is configured as a V-shaped surface, and the height adjustment mechanism is used to adjust the height of the support frame;

[0017] A front-to-back adjustment mechanism, the front-to-back adjustment mechanism is arranged on the front and rear side walls of the support frame, one end of the front-to-back adjustment mechanism is fixedly connected to the side wall of the support frame, and the other end of the front-to-back adjustment mechanism is slidably connected to the side walls of the vertical rods of the two end frames, and the front-to-back adjustment mechanism is used to adjust the front-to-back position of the support frame in the two end frames;

[0018] A left-right adjustment mechanism, which is arranged at the left and right ends of the working tube and is fixedly connected to the support frame;

[0019] A supporting wheel group, wherein the supporting wheel group is arranged on the upper surface of the support frame, the supporting wheel group is arranged in a V shape, and the side of the supporting wheel group away from the upper surface of the support frame contacts the outer wall of the working tube.

[0020] Preferably, the closing mechanism comprises:

[0021] A first support, wherein the first support is arranged on the upper surface of the intermediate frame, the lower end of the first support is fixedly connected to the upper surface of the intermediate frame, a first closing arm is arranged on the front side of the upper end of the first support, one end of the first closing arm is hingedly connected to the front side of the upper end of the first support, a plurality of the first closing arms are connected as a whole through a third connecting member, a second closing arm is arranged on the rear side of the upper end of the first support, one end of the second closing arm is hingedly connected to the rear side of the upper end of the first support, a plurality of the second closing arms are connected as a whole through a fourth connecting member, and the first closing arm is adapted to the second closing arm;

[0022] A first hydraulic cylinder, one end of which is hingedly connected to the front side of the lower surface of the intermediate frame, and the other end of which is hingedly connected to the side wall of the third connecting member;

[0023] A second hydraulic cylinder, one end of which is hingedly connected to the rear side of the lower surface of the intermediate frame, and the other end of which is hingedly connected to the side wall of the fourth connecting member;

[0024] The molding centering mechanism comprises:

[0025] A first linkage telescopic mechanism, wherein the first linkage telescopic mechanism is arranged on the upper surface of the first support, and a first limiting centering rod is arranged on the first linkage telescopic mechanism toward one end of the working tube;

[0026] A second linkage telescopic mechanism, the second linkage telescopic mechanism is arranged on the inner side of the first closing arm, three second linkage telescopic mechanisms are arranged, the angle between two adjacent second linkage telescopic mechanisms is 45 degrees, the second linkage telescopic mechanism is arranged with a second limiting centering rod toward one end of the working tube, and the angle between the second limiting centering rod and the first limiting centering rod is 45 degrees;

[0027] A third linkage telescopic mechanism, the third linkage telescopic mechanism is arranged on the inner side of the second closing arm, three third linkage telescopic mechanisms are arranged, the angle between two adjacent third linkage telescopic mechanisms is 45 degrees, the third linkage telescopic mechanism is arranged with a third limiting centering rod toward one end of the working tube, and the angle between the third limiting centering rod and the first limiting centering rod is 45 degrees;

[0028] A synchronous transmission shaft, wherein the synchronous transmission shaft is arranged between two adjacent first supports, and two ends of the synchronous transmission shaft are rotatably connected to the two first supports respectively;

[0029] A reduction motor, the reduction motor is arranged on the upper surface of the intermediate frame, and the reduction motor and the synchronous transmission shaft are connected through a sprocket and a chain transmission;

[0030] A sprocket transmission system, the sprocket transmission system is in transmission connection with the synchronous transmission shaft, the sprocket transmission system is arranged on the side walls of the first folding arm and the second folding arm, and the sprocket transmission system is respectively in transmission connection with the first linkage telescopic mechanism, the second linkage telescopic mechanism, and the third linkage telescopic mechanism;

[0031] The welding edge limiting mechanism comprises:

[0032] a fourth linkage telescopic mechanism, the fourth linkage telescopic mechanism being arranged at one end of the first closing arm away from the first support, the fourth linkage telescopic mechanism being transmission-connected to the sprocket transmission system, and the fourth linkage telescopic mechanism being provided with a first limit assembly toward one end of the working tube;

[0033] The fifth linkage telescopic mechanism is arranged at the end of the second closing arm away from the first support, the fifth linkage telescopic mechanism is connected to the sprocket transmission system, and the fifth linkage telescopic mechanism is provided with a second limiting assembly toward one end of the working tube, and the second limiting assembly and the first limiting assembly are symmetrical about the vertical center line of the first support.

[0034] Preferably, it also includes a temperature pretreatment mechanism, and the temperature pretreatment mechanism includes:

[0035] A first hot air blower, wherein the first hot air blower is arranged on the upper surface of the intermediate frame, an outlet end of the first hot air blower is connected to a first conveying pipe, and an end of the first conveying pipe is away from the first hot air blower and extends to the inside of the working pipe;

[0036] A second hot air blower, the second hot air blower is arranged on the upper surface of the intermediate frame, and the outlet end of the second hot air blower is connected to a second conveying pipe;

[0037] Nozzles, a plurality of the nozzles are disposed on the inner sides of the first closing arm and the second closing arm, and the nozzles are connected to an end of the second conveying pipe away from the second hot air blower.

[0038] Preferably, the track mechanism comprises:

[0039] A first track, wherein the first track is arranged between two adjacent first closing arms, the first track is located above the working tube, and both ends of the first track are respectively fixedly connected to the inner side walls of the two first closing arms on the left and right sides, and a plurality of first tracks are arranged, and two adjacent first tracks are connected by a track joint;

[0040] The second track is arranged above the two end frames, the second track is connected to the first track close to the two end frames through a track joint, a reinforcing rod is arranged on one side of the second track, the reinforcing rod is arranged in an L shape, one end of the reinforcing rod is fixedly connected to the end of the second track away from the first track, and the other end of the reinforcing rod is fixedly connected to the outer side wall of the first closing arm.

[0041] Preferably, the walking trolley mechanism comprises:

[0042] A trolley body, wherein a plurality of V-shaped running wheels are arranged on the side wall of the trolley body, and the V-shaped running wheels are respectively adapted to the first track and the second track, and the trolley body is installed on the track mechanism through the V-shaped running wheels and slides along the length direction of the track mechanism;

[0043] A second motor, the second motor is arranged on the side wall of the trolley body, and the second motor is connected to the V-shaped walking wheel through a pulley transmission system;

[0044] An auxiliary mounting frame, the auxiliary mounting frame is arranged outside the trolley body, and the auxiliary mounting frame is fixedly connected to the trolley body;

[0045] A first mounting frame, one end of which is detachably connected to the auxiliary mounting frame, and the other end of which extends below the auxiliary mounting frame and is provided with a welding mechanism;

[0046] A second mounting frame, one end of the second mounting frame is detachably connected to the auxiliary mounting frame, the other end of the second mounting frame extends to the opposite side of the auxiliary mounting frame and is provided with a thermal insulation layer making mechanism, the thermal insulation layer making mechanism includes: a discharge port, a first feed block, a second feed block, an auxiliary cleaning component, a gun mixing chamber, a gun pull rod and a second oil cylinder, one end of the second oil cylinder is fixedly connected to an end of the second mounting frame away from the auxiliary mounting frame, the other end of the second oil cylinder is provided with the gun mixing chamber, the first feed block and the second feed block are respectively provided at the front and rear ends of the gun mixing chamber, a gun pull rod is provided inside the gun mixing chamber, and a discharge port is provided at one end of the gun mixing chamber away from the second oil cylinder.

[0047] Preferably, the safety protection mechanism comprises:

[0048] A first bracket, the first bracket is arranged on the upper surface of the front side of the intermediate frame, and the first bracket is arranged in an L shape;

[0049] A second bracket, the second bracket is arranged on the upper surface of the front side of the intermediate frame, the second bracket is arranged in an L-shape, and the second bracket is located in front of the first bracket;

[0050] A support seat, the support seat is arranged above the first bracket, and the support seat is fixedly connected to the outer side wall of the third connecting member;

[0051] A safety support rod, one end of which is hingedly connected to the outer side wall of the support seat, the other end of which extends downward to above the second bracket, and a baffle is provided on the outer side wall of the safety support rod;

[0052] The first cylinder is arranged at the upper end of the first bracket, and the piston rod of the first cylinder is in contact with the rear side wall of the baffle.

[0053] Preferably, it also includes:

[0054] A first temperature sensor, which is disposed on the inner wall of the working tube and is used to detect the initial temperature of the inner wall of the working tube;

[0055] A second temperature sensor, which is disposed on the intermediate frame and is used to detect an initial temperature of the environment outside the working tube;

[0056] A temperature regulator, which is arranged on the intermediate frame, is electrically connected to the first hot air blower, and is used to adjust the hot air temperature of the first hot air blower;

[0057] A controller, the controller is arranged on the intermediate frame, and the controller is electrically connected to the first temperature sensor, the second temperature sensor and the temperature regulator respectively;

[0058] The controller controls the first hot air blower to work based on the first temperature sensor, the second temperature sensor and the temperature regulator, including the following steps:

[0059] Step 1: Based on the detection value of the first temperature sensor, the heat loss per unit time of the working tube during the heating process is calculated by formula (1):

[0060]

[0061] Wherein, Q1 is the heat loss per unit time of the working tube during the heating process, g is the gravitational acceleration, g is 9.8m / s 2 , β is the volume expansion dilution of the working tube, K2 is the preset maximum temperature of the working tube, K1 is the initial temperature of the inner wall of the working tube detected by the first temperature sensor, v1 is the kinematic viscosity of the hot air on the inner wall of the working tube, D1 is the outer diameter of the working tube, is the air thermal conductivity of the outer wall of the working tube, γ is the thermal conductivity of the working tube material, D2 is the inner diameter of the working tube, π is pi, π is 3.14, and L1 is the length of the working tube;

[0062] Step 2: Based on step 1 and the detection value of the second temperature sensor, the target temperature of the hot air delivered by the first hot air blower is calculated by formula (2):

[0063]

[0064] Wherein, K0 is the target temperature of the hot air delivered by the first hot air blower, t1 is the preset working time of the first hot air blower, C1 is the specific heat capacity of the working tube material, m1 is the mass of the working tube, C2 is the specific heat capacity of the hot air blown out by the first hot air blower, q1 is the preset air volume of the first hot air blower, ρ is the density of the hot air blown out by the first hot air blower, η is the working efficiency of the first hot air blower, and K3 is the initial temperature of the environment outside the working tube detected by the second temperature sensor;

[0065] Step 3: Based on the calculation result of step 2, the controller controls the temperature regulator to adjust the hot air temperature of the first hot air blower, and the temperature regulator adjusts the hot air temperature of the first hot air blower to the target temperature of the hot air delivered by the first hot air blower.

[0066] Preferably, it also includes:

[0067] An oil pressure gauge, which is arranged on the first hydraulic cylinder and is used to record the average oil pressure of the first hydraulic cylinder each time it works;

[0068] A timer, which is arranged on the intermediate frame and is used to record a single working time of the first hydraulic cylinder;

[0069] An alarm, wherein the alarm is arranged on the intermediate frame;

[0070] a second controller, the second controller being electrically connected to the oil pressure gauge, the timer, and the alarm respectively;

[0071] The second controller controls the alarm to work based on the oil pressure gauge and the recorded values ​​of the timer, comprising the following steps:

[0072] Step 11: Based on the recorded values ​​of the timer and the oil pressure gauge, the actual life of the first hydraulic cylinder is calculated by formula (3):

[0073]

[0074] Wherein, T0 is the actual life of the first hydraulic cylinder, P0 is the preset maximum oil pressure of the first hydraulic cylinder, and P i is the average oil pressure of the first hydraulic cylinder recorded by the oil pressure gauge when it works for the i-th time, N is the total number of times the first hydraulic cylinder works, T i is the working time of the first hydraulic cylinder when it works for the ith time recorded by the timer, and δ1 is the fatigue strength reduction coefficient of the piston rod of the first hydraulic cylinder;

[0075] Step 12: The second controller compares the actual life of the first hydraulic cylinder with the preset life of the first hydraulic cylinder. When the actual life of the first hydraulic cylinder is greater than the preset life of the first hydraulic cylinder, the second controller controls the alarm to issue an alarm prompt.

[0076] The technical solution of the present invention has the following advantages: The present invention provides a prefabricated insulation pipe production device, including a main frame, the support and positioning mechanisms are provided at both ends of the main frame, a working pipe is provided on the support and positioning mechanism, an outer protective layer is provided on the outside of the working pipe, the forming mechanism is provided on the main frame, the forming mechanism includes a closing mechanism, a forming centering mechanism and a welding edge limiting mechanism, a plurality of closing mechanisms are provided, and the plurality of closing mechanisms are arranged at equal intervals along the length direction of the frame assembly, the track mechanism is provided at the top of the forming mechanism, the walking trolley mechanism is slidably provided on the track mechanism, and the safety protection mechanism is provided on the main frame. In the present invention, multiple mechanisms are modularly designed and assembled together, which reduces the floor space of the production device. During the production process, the plate-like outer protective layer is closed into a tube by a closing mechanism and wrapped around the working tube. At the same time, the working tube and the outer protective layer are centered and positioned by a molding and centering mechanism. Then, the plate closed into a tube is welded from one end to the other end to form an outer protective tube. While welding the outer protective tube, polyurethane is filled into the insulation layer space. Compared with the traditional process, since the outer protective layer is closed into a tube by a closing mechanism, an outer protective tube is formed outside the working tube, and there is no need to use special equipment to insert the tube shell, which greatly reduces the production cost. In addition, when the closing mechanism is used for closing, there is no need to pre-produce the tube shell, which saves storage, transportation and management costs. In addition, temperature pretreatment and the production of the insulation layer are carried out while the outer protective layer is being formed, which improves the production efficiency. The safety protection mechanism has a protective effect on the production device, which improves the safety of the device.

[0077] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the devices particularly pointed out in the written description and the drawings of the description.

[0078] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0080] Figure 1 This is a schematic diagram of the overall structure of a prefabricated thermal insulation pipe production device of the present invention;

[0081] Figure 2 This is a front view of a prefabricated thermal insulation pipe production device of the present invention;

[0082] Figure 3 This is a left view of a prefabricated thermal insulation pipe production device of the present invention;

[0083] Figure 4 It is a schematic diagram of the main frame in the present invention;

[0084] Figure 5 It is a left view of the main frame of the present invention;

[0085] Figure 6 It is a left view of the support and positioning mechanism of the present invention;

[0086] Figure 7 It is a schematic diagram of the left and right adjustment mechanism in the present invention;

[0087] Figure 8 It is a front view of the closing mechanism in the present invention;

[0088] Fig. 9 It is a left side view of the closing mechanism in the present invention;

[0089] Fig.10 This is a schematic diagram of the first delivery pipe and nozzle in the present invention;

[0090] Fig.11 This is a front view of the molding centering mechanism in the present invention;

[0091] Fig.12 It is a left view of the molding centering mechanism in the present invention;

[0092] Fig.13 It is a schematic diagram of the first limiting component and the second limiting component in the present invention;

[0093] Fig.14 It is a schematic diagram of the track mechanism in the present invention;

[0094] Fig.15 This is a schematic diagram of the walking trolley mechanism of the present invention from a first perspective;

[0095] Fig.16 This is a schematic diagram of the walking trolley mechanism of the present invention from a second viewing angle;

[0096] Fig.17 It is a schematic diagram of the thermal insulation layer manufacturing mechanism in the present invention;

[0097] Fig.18 It is a schematic diagram of the position of the safety protection mechanism in the present invention;

[0098] Fig.19 It is a schematic diagram of the extension of the first cylinder in the present invention;

[0099] Fig. 20 It is a schematic diagram of the retraction of the first cylinder in the present invention;

[0100] Fig.21 For the present invention Figure 1 Enlarged view of point A in the middle.

[0101] In the figure: 1. main frame; 2. support and positioning mechanism; 3. track mechanism; 4. walking trolley mechanism; 5. safety protection mechanism; 6. working pipe; 7. outer sheath; 8. two end frames; 9. first connecting piece; 10. middle frame; 11. height adjustment mechanism; 12. support frame; 13. front and rear adjustment mechanism; 14. left and right adjustment mechanism; 15. support wheel group; 16. closing mechanism; 17. forming centering mechanism; 18. welding edge limit mechanism; 19. first support; 20. first closing arm; 21. third connecting piece; 22. second closing arm; 23. fourth connecting piece; 24. first hydraulic cylinder; 25. second hydraulic cylinder; 26. first linkage telescopic mechanism; 27. first limit centering rod; 28. second linkage telescopic mechanism; 29. ​​second limit centering rod; 30. third linkage telescopic mechanism; 31. third limit centering rod; 32. synchronous transmission shaft; 33. The reduction motor; 34, sprocket transmission system; 35, fourth linkage telescopic mechanism; 36, first limit assembly; 37, fifth linkage telescopic mechanism; 38, second limit assembly; 39, first conveying pipe; 40, nozzle; 41, first track; 42, track joint; 43, second track; 44, reinforcing rod; 45, trolley body; 46, V-shaped walking wheel; 47, second motor; 48, pulley transmission system; 49, auxiliary mounting frame; 50, first mounting frame; 51, welding mechanism; 52, second mounting frame; 53, insulation layer making mechanism; 54, discharge port; 55, first feed block; 56, second feed block; 57, auxiliary cleaning part; 58, gun mixing chamber; 59, gun pull rod; 60, second oil cylinder; 61, first bracket; 62, second bracket; 63, support seat; 64, safety support rod; 65, baffle; 66, first cylinder; 67, piston rod. DETAILED DESCRIPTION

[0102] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0103] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0104] Embodiment 1:

[0105] The embodiment of the present invention provides a prefabricated insulation pipe production device, such as Figure 1-Figure 21 As shown, it includes: a main frame 1, a support and positioning mechanism 2, a forming mechanism, a track mechanism 3, a walking trolley mechanism 4 and a safety protection mechanism 5. The support and positioning mechanism 2 is provided at both ends of the main frame 1. The support and positioning mechanism 2 is provided with a working tube 6, and an outer protective layer 7 is provided on the outside of the working tube 6. The forming mechanism is arranged on the main frame 1, and the forming mechanism is located between the two supporting and positioning mechanisms 2. The forming mechanism includes a closing mechanism 16, a forming centering mechanism 17 and a welding edge limiting mechanism 18. There are several closing mechanisms 16, and the several closing mechanisms 16 are arranged at equal intervals along the length direction of the frame assembly. The track mechanism 3 is arranged at the top of the forming mechanism, the walking trolley mechanism 4 is slidably arranged on the track mechanism 3, and the safety protection mechanism 5 is arranged on the main frame 1.

[0106] The working principle and beneficial effects of the above technical solution are as follows: the main frame 1 is the basic component of the device, and a support positioning mechanism 2 is arranged at the left and right ends of the main frame 1, and the support positioning mechanism 2 can support the working tube 6 and position the working tube 6. An outer protective layer 7 is arranged on the outside of the working tube 6, and the outer protective layer 7 can be processed and formed into a cylindrical shape by a molding mechanism arranged on the main frame 1. A track mechanism 3 is arranged at the upper end of the molding mechanism, and a walking trolley mechanism 4 is slidably arranged on the track mechanism 3. The walking trolley mechanism 4 can slide along the track mechanism 3, and a welding device and an insulation layer manufacturing device can be installed on the walking trolley mechanism 4. The welding device can process the cylindrical outer protective layer 7. The opening of the prefabricated insulated pipe is welded to form a pipe shell. At this time, an insulation layer space is formed between the pipe shell and the working pipe 6. The insulation layer making device can be used to add an insulation layer in the insulation layer space. The length of the entire prefabricated insulated pipe production device is determined according to the product length. Generally, the length of the product is about 12 meters, which is convenient for processing and transportation, and improves the versatility of the production device. The production device also includes a sealing mechanism, a hydraulic pump station, a polyurethane foaming device and an electrical control mechanism. The sealing mechanism is arranged at both ends of the production device, and is mainly used to seal the gap end between the working pipe 6 and the outer sheath 7, that is, the reserved insulation layer space end, to prevent the polyurethane insulation material from overflowing during foaming, during welding and insulation During the layer production process, the blocking mechanism needs to be partially opened and closed in a timely manner to avoid welding and spraying and pouring operations. The opening and closing action can be driven by telescopic devices such as cylinders or oil cylinders. The hydraulic pump station mainly provides power for the closing arm cylinder and the spraying or pouring gun. The hydraulic oil can be transported to the corresponding functional components through pipelines through the remote setting. The polyurethane foaming equipment is made of an existing polyurethane foaming machine. The foaming machine model is RS (Y) - III. The foaming machine can be remotely set. The polyurethane raw material is transported from the foaming machine to a dedicated spraying or pouring gun through a feed pipeline, thereby realizing the production of the insulation layer. The electrical control mechanism can be independently set in the working area or on the foaming machine. The electrical control mechanism integrates all electrical controls of the production device and controls the linkage operation of the entire production device. The production device modularizes and assembles multiple mechanisms together, reducing the floor space of the production device. In addition, the present invention also provides a closing mechanism 16 and a molding centering mechanism 17. During the production process, the sheet-like outer sheath 7 is closed into a tube by the closing mechanism 16 and wrapped around the working tube 6. At the same time, the molding centering mechanism 17 is used to center and position the working tube 6 and the outer sheath 7. Then, the sheet closed into a tube is welded from one end to the other end to form an outer sheath tube. While welding the outer sheath tube, polyurethane is filled into the insulation layer space.Compared with the traditional process, the present invention does not need to use special equipment to insert the working pipe 6 into the outer protective pipe, which reduces the investment in large production sites and equipment. At the same time, it does not need to pre-produce the pipe shell, saving storage, transportation and management costs, and reducing production costs. A temperature pretreatment mechanism is also provided in the molding mechanism, so that the outer protective layer 7 can also be temperature pretreated while being molded, and the insulation layer can be made, which greatly improves the production efficiency of the prefabricated insulation pipe production device. A safety protection mechanism 5 is also provided on the bracket body. The safety protection mechanism 5 has a protective effect on the entire production device, improves the safety of the device, and effectively prevents the occurrence of safety accidents. ,

[0107] Example 2

[0108] On the basis of the above-mentioned embodiment 1, Figure 4 , Figure 5 As shown, the main frame 1 includes two end frames 8, a frame assembly, a first connecting member 9 and a second connecting member. The two end frames 8 are arranged on the left and right sides of the frame assembly, and the two end frames 8 are respectively connected to the frame assembly through the second connecting member. The frame assembly is composed of a plurality of intermediate frames 10, and two adjacent intermediate frames 10 are connected through the first connecting member 9.

[0109] The working principle and beneficial effects of the above technical solution are as follows: the two ends of the main frame 1 are two end frames 8, and a frame assembly is arranged between the two end frames 8. The frame assembly is composed of multiple intermediate frames 10. Two adjacent intermediate frames 10 are connected by a first connecting piece 9, and the two intermediate frames 10 located at the two ends are connected to the two end frames 8 by a second connecting piece. The number of intermediate frames 10 can be adjusted according to the size of the product. Increasing the number of intermediate frames 10 can extend the basic length of the entire production device. On this basis, adding corresponding functional components can quickly realize the lengthening of the production device.

[0110] Example 3

[0111] On the basis of Example 2, Figure 6 , Figure 7 As shown, the support and positioning mechanism 2 includes:

[0112] A height adjustment mechanism 11, wherein the height adjustment mechanism 11 is disposed in the two end frames 8, and the lower end of the height adjustment mechanism 11 is fixedly connected to the upper end of the crossbar in the two end frames 8;

[0113] A support frame 12, wherein the lower end of the support frame 12 is slidably connected to the upper end of the height adjustment mechanism 11, the upper end of the support frame 12 is configured as a V-shaped surface, and the height adjustment mechanism 11 is used to adjust the height of the support frame 12;

[0114] A front-to-back adjustment mechanism 13, the front-to-back adjustment mechanism 13 is arranged on the front and rear side walls of the support frame 12, one end of the front-to-back adjustment mechanism 13 is fixedly connected to the side wall of the support frame 12, and the other end of the front-to-back adjustment mechanism 13 is slidably connected to the side wall of the vertical rod of the two end frames 8, and the front-to-back adjustment mechanism 13 is used to adjust the front-to-back position of the support frame 12 in the two end frames 8;

[0115] A left-right adjustment mechanism 14, which is disposed at the left and right ends of the working tube 6, and is fixedly connected to the support frame 12;

[0116] The supporting wheel group 15 is arranged on the upper surface of the support frame 12 . The supporting wheel group 15 is arranged in a V shape. The side of the supporting wheel group 15 away from the upper surface of the support frame 12 contacts the outer wall of the working tube 6 .

[0117] The working principle and beneficial effects of the above technical solution are as follows: the support and positioning mechanism 2 is divided into two sets and is respectively installed at the left and right ends of the main frame 1. Each set of the support and positioning mechanism 2 can be adjusted relative to the main frame 1. Its main function is to support and position the working tube 6. A height adjustment mechanism 11 is arranged on the frame bodies 8 at both ends. The height adjustment mechanism 11 can be an electric DC push rod. The model of the electric DC push rod is GRA-D8. A support frame 12 is arranged on the upper end of the height adjustment mechanism 11. The support frame 12 is slidably connected to the height adjustment mechanism 11. The front and rear side walls of the support frame 12 are both provided with a front and rear adjustment mechanism 13, which can be an electric DC push rod, and the electric DC push rod model is XDFA-24-300MM. One end of the front and rear adjustment mechanism 13 is slidably connected to the side walls of the frame body 8 at both ends. A V-shaped support wheel group 15 is provided on the upper surface of the support frame 12. The V-shaped support wheel group 15 is installed on the V-shaped surface at the upper end of the support frame 12 to stabilize the support of the working pipe 6. The working pipe 6 can move left and right on the support wheel group 15 along the axial direction of the working pipe 6. Under the restriction of the left and right adjustment mechanism 14, Ensure that the working tube 6 will not jump out of the supporting wheel group 15. The left and right adjustment mechanism 14 can also use an electric DC push rod with model 64STG-200mm-IP65. The height adjustment mechanism 11 can adjust the height position of the support frame 12 and bear the gravity of the working tube 6. Front and rear adjustment mechanisms 13 are provided at the four corners of the support frame 12. When the whole device is used to produce products with different diameters, the axial position of the product remains unchanged. Therefore, before changing the specifications of the production product, it is necessary to adjust the support positioning mechanism 2 to adjust the center of the working tube 6 of the new product to the same height as the center of the working tube 6 of the new product. The production centers of the devices coincide, which can be achieved through the height adjustment mechanism 11 and the front and rear adjustment mechanism 13. After adjustment, the position is locked, and no further adjustment is required during the production of products of the same specification. The left and right adjustment mechanisms 14 at both ends of the working tube 6 are used to adjust and position the position of the working tube 6 in the axial direction, which can ensure that the lengths of the exposed working tubes 6 at both ends of the product are basically the same. Initially, the left and right adjustment mechanisms 14 at both ends are retracted into the grooves, and the working tube 6 is hoisted along the inclined surface and introduced onto the V-shaped supporting wheel assembly 15, and then pushed out by the left and right adjustment mechanisms 14 to complete the positioning of the working tube 6.

[0118] Example 4

[0119] On the basis of Example 2 or 3, Figure 8-Figure 13 As shown, the closing mechanism 16 comprises:

[0120] A first support 19, wherein the first support 19 is arranged on the upper surface of the intermediate frame 10, the lower end of the first support 19 is fixedly connected to the upper surface of the intermediate frame 10, a first closing arm 20 is arranged on the front side of the upper end of the first support 19, one end of the first closing arm 20 is hingedly connected to the front side of the upper end of the first support 19, and a plurality of the first closing arms 20 are connected as a whole through a third connecting member 21, a second closing arm 22 is arranged on the rear side of the upper end of the first support 19, one end of the second closing arm 22 is hingedly connected to the rear side of the upper end of the first support 19, and a plurality of the second closing arms 22 are connected as a whole through a fourth connecting member 23, and the first closing arm 20 is adapted to the second closing arm 22;

[0121] A first hydraulic cylinder 24, one end of which is hingedly connected to the front side of the lower surface of the intermediate frame 10, and the other end of which is hingedly connected to the side wall of the third connecting member 21;

[0122] A second hydraulic cylinder 25, one end of which is hingedly connected to the rear side of the lower surface of the intermediate frame 10, and the other end of which is hingedly connected to the side wall of the fourth connecting member 23;

[0123] The molding centering mechanism 17 comprises:

[0124] A first linkage telescopic mechanism 26, wherein the first linkage telescopic mechanism 26 is disposed on the upper surface of the first support 19, and a first limiting centering rod 27 is disposed on one end of the first linkage telescopic mechanism 26 toward the working tube 6;

[0125] A second linkage telescopic mechanism 28, which is arranged on the inner side of the first closing arm 20. Three second linkage telescopic mechanisms 28 are provided, and the angle between two adjacent second linkage telescopic mechanisms 28 is 45 degrees. A second limiting centering rod 29 is provided on the second linkage telescopic mechanism 28 toward one end of the working tube 6, and the angle between the second limiting centering rod 29 and the first limiting centering rod 27 is 45 degrees.

[0126] A third linkage telescopic mechanism 30, the third linkage telescopic mechanism 30 is arranged on the inner side of the second closing arm 22, three third linkage telescopic mechanisms 30 are arranged, the angle between two adjacent third linkage telescopic mechanisms 30 is 45 degrees, the third linkage telescopic mechanism 30 is arranged with a third limiting centering rod 31 toward one end of the working tube 6, the angle between the third limiting centering rod 31 and the first limiting centering rod 27 is 45 degrees;

[0127] A synchronous transmission shaft 32, wherein the synchronous transmission shaft 32 is disposed between two adjacent first supports 19, and both ends of the synchronous transmission shaft 32 are rotatably connected to the two first supports 19 respectively;

[0128] A reduction motor 33, wherein the reduction motor 33 is arranged on the upper surface of the intermediate frame 10, and the reduction motor 33 is connected to the synchronous transmission shaft 32 through a sprocket and a chain transmission;

[0129] A sprocket transmission system 34, the sprocket transmission system 34 is in transmission connection with the synchronous transmission shaft 32, the sprocket transmission system 34 is arranged on the side walls of the first closing arm 20 and the second closing arm 22, and the sprocket transmission system 34 is respectively in transmission connection with the first linkage telescopic mechanism 26, the second linkage telescopic mechanism 28, and the third linkage telescopic mechanism 30;

[0130] The welding edge limiting mechanism 18 comprises:

[0131] A fourth linkage telescopic mechanism 35, wherein the fourth linkage telescopic mechanism 35 is arranged at an end of the first closing arm 20 away from the first support 19, the fourth linkage telescopic mechanism 35 is transmission-connected to the sprocket transmission system 34, and a first limit assembly 36 is arranged at one end of the fourth linkage telescopic mechanism 35 toward the working tube 6;

[0132] The fifth linkage telescopic mechanism 37 is arranged at the end of the second closing arm 22 away from the first support 19, the fifth linkage telescopic mechanism 37 is connected to the sprocket transmission system 34, and the fifth linkage telescopic mechanism 37 is provided with a second limiting assembly 38 at one end toward the working tube 6, and the second limiting assembly 38 and the first limiting assembly 36 are symmetrical about the vertical center line of the first support 19.

[0133] The working principle and beneficial effects of the above technical solution are as follows: the closing mechanism 16 is mainly used to install the follow-up functional part of the supporting device, and provide action coordination and power for the forced forming and positioning of the outer sheath 7. Except for the supporting parts of the main frame 1 and the working tube 6, the other functional parts of the device body are basically related to the action of the closing mechanism 16. The first closing arm 20 and the second closing arm 22 in the closing mechanism 16 can be synchronously opened to a horizontal position, and can also be synchronously closed to a vertical position. During the action, the first closing arm 20 and the second closing arm 22 can stop and maintain at any position under the action of the first hydraulic cylinder 24 and the second hydraulic cylinder 25, and can also resume action in any direction at any time. The first closing arm 20 and the second closing arm 22 are installed on the upper surface of the intermediate frame 10 through the first support 19, and are installed on Two pairs of first closing arms 20 of the same intermediate frame 10 form a group, and then the first closing arms 20 are connected as a whole by the third connecting member 21, and the first closing arms 20 are driven by the first hydraulic oil cylinder 24 arranged at the middle position of the corresponding side of the third connecting member 21 to realize the opening and closing action of the first closing arms 20. Similarly, two pairs of second closing arms 22 installed on the same intermediate frame 10 form a group, and then the second closing arms 22 are connected as a whole by the fourth connecting member 23, and the second hydraulic oil cylinder 25 arranged at the middle position of the corresponding side of the fourth connecting member 23 is driven to realize the opening and closing action of the second closing arms 22. The first closing arms 20 and the second closing arms 22 arranged in groups also meet the requirements of modular design. From the installation of the mechanical part to the access of the control part, the opening and closing function can be completed and realized conveniently and quickly, providing a basis for the addition of other mechanisms;The forming and centering mechanism 17 is used to force the outer sheath 7 to be closed into a cylindrical shape during the synchronous closing process of the first closing arm 20 and the second closing arm 22, and to position and center the cylindrical outer sheath 7. A first linkage telescopic mechanism 26 is arranged on the upper surface of the first support 19, and a first limit centering rod 27 is arranged on the end of the first linkage telescopic mechanism 26 facing the working tube 6. A second linkage telescopic mechanism 28 is arranged on the inner side of the first closing arm 20, and a second limit centering rod 29 is arranged on the side of the second linkage telescopic mechanism 28 facing the working tube 6. A third linkage telescopic mechanism 30 is arranged on the inner side of the second closing arm 22, and a third limit centering rod 31 is arranged on the side of the third linkage telescopic mechanism 30 facing the working tube 6. The second limit centering rod 29 and the third limit centering rod 31 are both arranged in three and are symmetrical about the center line of the first support 19. The angle between the second limit centering rods 29 is 45 degrees, and the second limit centering rods 29 are symmetrical. The angle between the core rod 29 and the first limit centering rod 27 is also 45 degrees. The end of the first limit centering rod 27 can limit the lower position of the outer sheath 7. The ends of the second limit centering rod 29 and the third limit centering rod 31 respectively limit the front and rear positions of the outer sheath 7. The center of the circular envelope formed by the first limit centering rod 27, the second limit centering rod 29 and the third limit centering rod 31 coincides with the production center of the production device. The diameter of the circular envelope is the outer diameter of the product shell. Therefore, before producing products of different specifications, the positions of the first limit centering rod 27, the second limit centering rod 29 and the third limit centering rod 31 need to be adjusted according to the outer diameter of the new product shell. The production device is provided with at least two sets of forming centering mechanisms 17, each set of which can be adjusted in a single motion, or multiple sets of linkage adjustment can be used to adjust a single set of micro-adjustments into place. After adjustment in place and locking, adjustments will be made again before the production of the next specification product. Multiple sets of forming and centering mechanisms 17 work together synchronously to achieve the functions of shaping (forming a tube shell) and centering the entire outer sheath 7 material;At the same time, in order to prevent the outer sheath 7 from rotating during the closing process, a welding edge limiting mechanism 18 is also provided. The first limiting assembly 36 and the second limiting assembly 38 are located above the working tube 6. The first limiting assembly 36 is controlled by the fourth linkage telescopic mechanism 35, and the second limiting assembly 38 is controlled by the fifth linkage telescopic mechanism 37. The first linkage telescopic mechanism 26, the second linkage telescopic mechanism 28, the third linkage telescopic mechanism 30, the fourth linkage telescopic mechanism 35, and the fifth linkage telescopic mechanism 37 are all connected to the sprocket transmission system 34 for transmission, and the sprocket transmission system 34 is connected to the synchronous transmission shaft 32 for transmission. After starting the reduction motor 33, the reduction motor 33 drives the synchronous transmission shaft 32 to rotate through the sprocket and chain combination, and the rotation of the synchronous transmission shaft 32 drives the sprocket transmission system 34 to move. The sprocket transmission system 34 can drive the first linkage telescopic mechanism 26, the second linkage telescopic mechanism 28, the third linkage telescopic mechanism 30, the fourth linkage telescopic mechanism 35, and the fifth linkage telescopic mechanism 37. The linkage telescopic mechanism 37 moves. Under the transmission action of the sprocket transmission system 34, the first linkage telescopic mechanism 26, the second linkage telescopic mechanism 28, the third linkage telescopic mechanism 30, the fourth linkage telescopic mechanism 35, and the fifth linkage telescopic mechanism 37 can synchronously realize the telescopic function and drive the installed components to move synchronously. The first limit centering rod 27, the second limit centering rod 29 and the third limit centering rod 31 close the outer sheath 7. The first limit assembly 36 and the second limit assembly 38 are distributed at the front and rear ends of the outer sheath 7 to limit and position the front and rear plate edges of the outer sheath 7. The first closing arm 20 and the second closing arm 22 are assisted to force the outer sheath 7 to close into a preset size and shape through the forming centering mechanism 17, and the welding edge limit mechanism 18 can assist the welding part mechanism to complete the welding operation during the welding process. By setting the above mechanism, the combination of multiple mechanisms can be realized, so that multiple production processes can be carried out synchronously, which greatly improves the production efficiency of the device. ;

[0134] Example 5

[0135] On the basis of Example 4, Fig.10 As shown, it also includes a temperature pretreatment mechanism, and the temperature pretreatment mechanism includes:

[0136] A first hot air blower, the first hot air blower is arranged on the upper surface of the intermediate frame 10, the outlet end of the first hot air blower is connected to a first conveying pipe 39, and the first conveying pipe 39 extends away from one end of the first hot air blower to the inside of the working pipe 6;

[0137] A second hot air blower, the second hot air blower is arranged on the upper surface of the intermediate frame 10, and the outlet end of the second hot air blower is connected to a second conveying pipe;

[0138] Nozzles 40 , a plurality of the nozzles 40 are disposed on the inner sides of the first closing arm 20 and the second closing arm 22 , and the nozzles 40 are connected to an end of the second conveying pipe away from the second hot air blower.

[0139] The working principle and beneficial effects of the above technical solution are as follows: the temperature pretreatment mechanism can perform temperature pretreatment on the working tube 6 and the outer sheath 7, which is beneficial to the closing and forming of the outer sheath material, and is beneficial to improving the foaming quality and utilization rate of the insulation material when making the insulation layer, and is also beneficial to the maturation and shaping of the product in the later stage of production. The temperature pretreatment is a heating operation. Since the specifications and sizes of the production raw materials are very large, in order to improve the pretreatment efficiency, a high-temperature air supply heat source is used for strong heating. The first hot air blower, the second hot air blower and the conveying device (conveying pipe) can be installed on the main frame 1. The pretreatment of the working tube 6 is carried out by a closed circulating hot air supply method. The model of the first hot air blower is WY-H1522. The hot air generated by the first hot air blower is conveyed to the working tube 6 through the first conveying pipe 39. The hot air is sent into the closed inner cavity of the working tube 6 at one end and then led back to the first hot air blower from the other end of the working tube 6 to complete the cycle. The temperature pretreatment of the outer sheath 7 is carried out by an open hot air supply method. In the first A plurality of nozzles 40 are arranged on the inner walls of the closing arm 20 and the second closing arm 22. The hot air generated by the second hot air blower is transported to the nozzle 40 through the second conveying pipe. The nozzle 40 is connected to the second conveying pipe. Hot air can be blown out from the nozzle 40. The entire outer protective layer 7 plate is heated by multi-point air supply. After the temperature pretreatment mechanism is started, it can run through the entire production process according to production needs, and can also be stopped or started at any time during the production process. This function is particularly advantageous in the northern winter production environment. By setting the temperature pretreatment mechanism, the working tube 6 and the outer protective layer 7 are heated in advance, which further improves the production efficiency, improves the foaming quality, and improves the qualified rate of the product.

[0140] Example 6

[0141] On the basis of Example 4 or 5, Fig.14 As shown, the track mechanism 3 includes:

[0142] A first track 41, wherein the first track 41 is disposed between two adjacent first closing arms 20, the first track 41 is located above the working tube 6, and both ends of the first track 41 are fixedly connected to the inner side walls of the two first closing arms 20 on the left and right sides, respectively. A plurality of first tracks 41 are provided, and two adjacent first tracks 41 are connected via a track joint 42;

[0143] The second track 43 is arranged above the two end frames 8, and the second track 43 is connected to the first track 41 close to the two end frames 8 through the track joint 42. A reinforcing rod 44 is arranged on one side of the second track 43, and the reinforcing rod 44 is arranged in an L shape. One end of the reinforcing rod 44 is fixedly connected to the end of the second track 43 away from the first track 41, and the other end of the reinforcing rod 44 is fixedly connected to the outer wall of the first closing arm 20.

[0144] The working principle and beneficial effects of the above technical solution are as follows: the track mechanism 3 is composed of a first track 41, a second track 43 and a reinforcing rod 44. The track mechanism 3 is usually arranged at the top end of the first closing arm 20. Several first tracks 41 are connected by a track joint 42, and the second tracks 43 are connected at both ends of the first track 41 assembly by the track joint 42. The second track 43 is fixedly connected to the outer wall of the first closing arm 20 through an L-shaped reinforcing rod 44. The reinforcing rod 44 can improve the stability of the entire track mechanism 3. The entire track mechanism 3 should be straight and there should be no misalignment at the interface to ensure the smooth passage of the walking trolley mechanism 4. When in the closed position, the walking trolley mechanism 4 walks along the track mechanism 3. The walking trolley mechanism 4 carries other functional parts and completes a series of process operations. When in the open position, the walking trolley mechanism 4 returns to the initial position along the track mechanism 3 to wait for the next production operation.

[0145] Example 7

[0146] On the basis of Example 6, Figure 15-17 , the walking trolley mechanism 4 includes:

[0147] A trolley body 45, wherein a plurality of V-shaped running wheels 46 are disposed on the side wall of the trolley body 45, wherein the V-shaped running wheels 46 are respectively adapted to the first track 41 and the second track 43, and the trolley body 45 is mounted on the track mechanism 3 through the V-shaped running wheels 46 and slides along the length direction of the track mechanism 3;

[0148] A second motor 47, the second motor 47 is arranged on the side wall of the trolley body 45, and the second motor 47 is connected to the V-shaped walking wheel 46 through a pulley transmission system 48;

[0149] An auxiliary mounting frame 49, the auxiliary mounting frame 49 is arranged outside the trolley body 45, and the auxiliary mounting frame 49 is fixedly connected to the trolley body 45;

[0150] A first mounting frame 50, one end of which is detachably connected to the auxiliary mounting frame 49, and the other end of which extends below the auxiliary mounting frame 49 and is provided with a welding mechanism 51;

[0151] A second mounting frame 52, one end of the second mounting frame 52 is detachably connected to the auxiliary mounting frame 49, the other end of the second mounting frame 52 extends to the opposite side of the auxiliary mounting frame 49 and is provided with a thermal insulation layer making mechanism 53, the thermal insulation layer making mechanism 53 includes: a discharge port 54, a first feed block 55, a second feed block 56, an auxiliary cleaning component 57, a gun mixing chamber 58, a gun pull rod 59 and a second oil cylinder 60, one end of the second oil cylinder 60 is fixedly connected to the end of the second mounting frame 52 away from the auxiliary mounting frame 49, the other end of the second oil cylinder 60 is provided with the gun mixing chamber 58, the first feed block 55 and the second feed block 56 are respectively provided at the front and rear ends of the gun mixing chamber 58, a gun pull rod 59 is provided inside the gun mixing chamber 58, and a discharge port 54 is provided at the end of the gun mixing chamber 58 away from the second oil cylinder 60.

[0152] The working principle and beneficial effects of the above technical solution are as follows: the walking trolley mechanism 4 can walk along the track mechanism 3, and is mainly used to carry the welding mechanism 51 and the insulation layer making mechanism 53, and assist the two mechanisms to complete the production operation. The welding mechanism 51 can be an automatic welding gun. The walking trolley mechanism 4 includes a trolley body 45, and the side wall of the trolley body 45 is provided with a V-shaped walking wheel 46. The V-shaped walking wheel 46 is provided with two groups of upper and lower walking wheels as a group. The V-shaped grooves of the V-shaped walking wheels 46 are respectively fixed to the upper and lower edges of the first track 41 and the second track 43. A second motor 47 is provided, and the second motor 47 can drive the V-shaped walking wheel 46 to rotate through a pulley transmission system 48, thereby driving the trolley body 45 to move along the track mechanism 3. An auxiliary mounting frame 49 is provided on the trolley body 45, and a first mounting frame 50 and a second mounting frame 52 are provided on the lower surface of the auxiliary mounting frame 49. The first mounting frame 50 is used to install a welding mechanism 51, and the second mounting frame 52 is used to install an insulation layer making mechanism 53. The insulation layer making mechanism 53 includes a second oil cylinder 60 fixedly connected to the second mounting frame 52. A gun mixing chamber 58 is provided on the top, and a first feeding block 55 and a second feeding block 56 are respectively provided at both ends of the gun mixing chamber 58. A gun pull rod 59 is provided inside the gun mixing chamber 58. The gun pull rod 59 is concentric with the discharge port 54. When the gun pull rod 59 is retracted, the discharge port 54 discharges materials. After the gun pull rod 59 is pushed out, the discharge port 54 is closed. The gun mixing chamber 58 is also provided with a discharge port 54 and an auxiliary cleaning part 57. A spray gun and a pouring gun can be installed on the first feeding block 55 and the second feeding block 56 respectively. The spray gun and the pouring gun are connected to the output pipe of the foaming machine. When the insulation layer is made, The spraying method or the pouring method can be adopted, or the two can be complemented and combined to operate with multiple gun heads to improve production efficiency. The selection and quantity of spraying and pouring guns can be determined according to the actual pouring process. The positions of the first mounting frame 50 and the second mounting frame 52 on the auxiliary mounting frame 49 can be adjusted to adapt to the production of products of different specifications. The walking trolley mechanism 4 not only has to carry the welding mechanism 51 and the insulation layer making mechanism 53, but also can carry dragging heating control cables, feed pipe groups, control oil pipes, power cables and electrical control cables, etc., which greatly improves the working efficiency of the production device.

[0153] Example 8

[0154] On the basis of any one of Examples 4-6, Figure 18-Figure 21 As shown, the safety protection mechanism 5 includes:

[0155] A first bracket 61, wherein the first bracket 61 is disposed on the front upper surface of the intermediate frame 10, and the first bracket 61 is configured in an L shape;

[0156] A second bracket 62, the second bracket 62 is arranged on the front upper surface of the intermediate frame 10, the second bracket 62 is arranged in an L-shape, and the second bracket 62 is located in front of the first bracket 61;

[0157] A support seat 63, wherein the support seat 63 is disposed above the first bracket 61, and the support seat 63 is fixedly connected to the outer side wall of the third connecting member 21;

[0158] A safety support rod 64, one end of which is hingedly connected to the outer side wall of the support seat 63, and the other end of which extends downward to above the second bracket 62, and a baffle 65 is provided on the outer side wall of the safety support rod 64;

[0159] The first cylinder 66 is disposed at the upper end of the first bracket 61 , and the piston rod 67 of the first cylinder 66 is in contact with the rear side wall of the baffle 65 .

[0160] The working principle and beneficial effects of the above technical solution are as follows: when the first closing arm 20 needs to be opened, the first cylinder 66 is started, the first cylinder 66 drives the piston rod 67 to extend, the piston rod 67 extends to drive the baffle 65 to move, the baffle 65 drives the safety support rod 64 to move, and the safety support rod 64 is pushed out. At this time, the first closing arm 20 can be opened or closed normally. At the beginning of production, when the first closing arm 20 reaches the closed position, the first cylinder 66 is started, and the piston rod 67 of the first cylinder 66 is retracted. Under the action of gravity, the safety support rod 64 is suspended above the second bracket 62. At this time, if the first closing arm 20 is misoperated in the closed position or the first hydraulic cylinder 24 fails, the first closing arm 20 will have the problem of opening outward, the first closing arm 20 drives the third connecting member 21 to move downward, the third connecting member 21 drives the support seat 63 to move downward, the support seat 63 drives the safety support rod 64 to move downward, and the safety support rod 64 moves to the second bracket 62 and is connected with the second The bracket 62 abuts against the inside. At this time, the safety support rod 64 stops moving downward. The safety support rod 64 supports the first closing arm 20 that is opened outward, and replaces the first hydraulic cylinder 24 to bear the load of the first closing arm 20 to prevent the first closing arm 20 from continuing to open, thereby preventing the first closing arm 20 from accidentally opening and causing a safety accident. Through the safety protection mechanism 5, the safety of the device is greatly improved, and injuries to the staff caused by the failure of the first hydraulic cylinder 24 are avoided. Similarly, a safety protection mechanism 5 can also be provided on the outside of the second closing arm 22 to provide effective support for the second closing arm 22. In addition, due to the complex working process of the production device, the safety protection mechanism 5 also includes a number of position sensing switches and limit switches. The position sensing switches and limit switches all use existing devices. Position sensing switches or limit switches are provided at the position where each action of the production device is performed, thereby providing action monitoring and feedback for the electrical control mechanism to ensure safe operation and use of the device.

[0161] Example 9

[0162] On the basis of Example 5, the present invention further comprises:

[0163] A first temperature sensor, which is disposed on the inner wall of the working tube 6 and is used to detect the initial temperature of the inner wall of the working tube 6;

[0164] A second temperature sensor, which is disposed on the intermediate frame 10 and is used to detect an initial temperature of the environment outside the working tube 6;

[0165] A temperature regulator, which is arranged on the intermediate frame 10, is electrically connected to the first hot air blower, and is used to adjust the hot air temperature of the first hot air blower;

[0166] A controller, the controller is arranged on the intermediate frame 10, and the controller is electrically connected to the first temperature sensor, the second temperature sensor and the temperature regulator respectively;

[0167] The controller controls the first hot air blower to work based on the first temperature sensor, the second temperature sensor and the temperature regulator, including the following steps:

[0168] Step 1: Based on the detection value of the first temperature sensor, the heat loss per unit time of the working tube 6 during the heating process is calculated by formula (1):

[0169]

[0170] Wherein, Q1 is the heat loss per unit time of the working tube 6 during the heating process, g is the gravitational acceleration, g is 9.8m / s 2 , β is the volume expansion dilution of the working tube 6, K2 is the preset maximum temperature of the working tube 6, K1 is the initial temperature of the inner wall of the working tube 6 detected by the first temperature sensor, v1 is the kinematic viscosity of the hot air on the inner wall of the working tube 6, D1 is the outer diameter of the working tube 6, is the air thermal conductivity of the outer wall of the working tube 6, γ is the thermal conductivity of the material of the working tube 6, D2 is the inner diameter of the working tube 6, π is pi, π is 3.14, and L1 is the length of the working tube 6;

[0171] Step 2: Based on step 1 and the detection value of the second temperature sensor, the target temperature of the hot air delivered by the first hot air blower is calculated by formula (2):

[0172]

[0173] Wherein, K0 is the target temperature of the hot air delivered by the first hot air blower, t1 is the preset working time of the first hot air blower, C1 is the specific heat capacity of the material of the working tube 6, m1 is the mass of the working tube 6, C2 is the specific heat capacity of the hot air blown out by the first hot air blower, q1 is the preset air volume of the first hot air blower, ρ is the density of the hot air blown out by the first hot air blower, η is the working efficiency of the first hot air blower, and K3 is the initial temperature of the environment outside the working tube 6 detected by the second temperature sensor;

[0174] Step 3: Based on the calculation result of step 2, the controller controls the temperature regulator to adjust the hot air temperature of the first hot air blower, and the temperature regulator adjusts the hot air temperature of the first hot air blower to the target temperature of the hot air delivered by the first hot air blower.

[0175] The working principle and beneficial effects of the above technical solution are as follows: the first temperature sensor is arranged on the inner wall of the working tube 6 to detect the initial temperature of the inner wall of the working tube 6; the second temperature sensor is arranged outside the working tube 6 to detect the initial temperature of the environment outside the working tube 6; the first temperature sensor and the second temperature sensor can both use the existing temperature sensor of model WRN-240B; the temperature sensor arrangement scheme is also implemented by existing technical means; the first hot air blower delivers hot air to continuously heat the inner wall of the working tube 6; based on the detection value of the first temperature sensor, the second temperature sensor can be calculated by formula (1) The heat loss per unit time of the working tube 6 during the heating process of the working tube 6 by a hot air blower, wherein the unit of heat loss is watt. In the calculation process of formula (1), π·D1·L1 is the outer wall area of ​​the working tube 6. The calculation not only considers the radiation heat loss of the outer wall of the working tube 6, but also takes into account the thermal conductivity of the material of the working tube 6. For working tubes 6 with different outer diameters, different thicknesses and different materials, the corresponding heat loss per unit time is also different. Formula (1) can accurately calculate the heat loss per unit time of the working tube 6 during the heating process, and then based on the calculation result of formula (2) And the detection value of the second temperature sensor can be used to calculate the target temperature of the hot air delivered by the first hot air blower. During the calculation process, the total heat generated by the first hot air blower within the preset working time is calculated through the heat loss of the working tube 6 and the heat absorbed by the working tube 6, and then the target temperature of the hot air delivered by the first hot air blower is calculated. Finally, the controller can control the temperature regulator to adjust the hot air temperature of the first hot air blower so that the hot air temperature of the first hot air blower reaches the target temperature. The controller uses an industrial computer model GE4800-6C-i3 and a temperature regulator model CTM-3. This solution can adjust the temperature of the hot air delivered by the first hot air blower according to the material, length, outer diameter and thickness of the working tube 6 produced, thereby improving the overall intelligence level of the production device, and accurately controlling the operation of the first hot air blower to achieve the purpose of energy saving. At the same time, after the temperature of the hot air delivered by the first hot air blower is adjusted to the target temperature, the working tube 6 can be accurately heated to the preset maximum temperature, which is convenient for the subsequent foaming process of the outer wall insulation layer of the working tube 6. The foaming effect will not be affected by the low temperature of the outer wall of the working tube 6, thereby improving product quality and further improving the production efficiency of the production device.

[0176] Example 10

[0177] On the basis of Example 4, the invention further comprises:

[0178] An oil pressure gauge, which is arranged on the first hydraulic cylinder 24 and is used to record the average oil pressure of the first hydraulic cylinder 24 each time it works;

[0179] A timer, which is arranged on the intermediate frame 10 and is used to record a single working time of the first hydraulic cylinder 24;

[0180] An alarm, which is arranged on the intermediate frame 10;

[0181] a second controller, the second controller being electrically connected to the oil pressure gauge, the timer, and the alarm respectively;

[0182] The second controller controls the alarm to work based on the oil pressure gauge and the recorded values ​​of the timer, comprising the following steps:

[0183] Step 11: Based on the recorded values ​​of the timer and the oil pressure gauge, the actual life of the first hydraulic cylinder 24 is calculated by formula (3):

[0184]

[0185] Wherein, T0 is the actual life of the first hydraulic cylinder 24, P0 is the preset maximum oil pressure of the first hydraulic cylinder 24, and P i is the average oil pressure of the first hydraulic cylinder 24 when it works for the i-th time recorded by the oil pressure gauge, N is the total number of times the first hydraulic cylinder 24 works, T i is the working time of the first hydraulic cylinder 24 when it works for the i-th time recorded by the timer, and δ1 is the fatigue strength reduction coefficient of the piston rod of the first hydraulic cylinder 24;

[0186] Step 12: The second controller compares the actual life of the first hydraulic cylinder 24 with the preset life of the first hydraulic cylinder 24. When the actual life of the first hydraulic cylinder 24 is greater than the preset life of the first hydraulic cylinder 24, the second controller controls the alarm to issue an alarm prompt.

[0187] The working principle and beneficial effects of the above technical solution are as follows: an oil pressure gauge is also provided on the first hydraulic cylinder 24, and the oil pressure gauge can record the average oil pressure of the first hydraulic cylinder 24 each time it works. The first closing arm 20 changes from a horizontal state to a vertical state and remains in a vertical state for one complete operation of the first hydraulic cylinder 24. By setting a timer, the single working duration of the first hydraulic cylinder 24 can be accurately recorded. The actual life of the first hydraulic cylinder 24 can be accurately calculated by formula (3). In formula (3), the fatigue strength reduction coefficient of the piston rod of the first hydraulic cylinder 24 is in the range of 0.7-0.8, and the preset life of the first hydraulic cylinder 24 is pre-stored in the second controller. The second controller can calculate the actual life of the first hydraulic cylinder 24. Compared with the preset life in the second controller, when the actual life of the first hydraulic cylinder 24 is greater than the preset life, the second controller can control the alarm to issue an alarm prompt, and the staff can promptly open the safety protection mechanism according to the alarm prompt, and promptly inspect and repair the first hydraulic cylinder 24. Through the above scheme, the service life of the first hydraulic cylinder 24 can be monitored in real time. When the first hydraulic cylinder 24 reaches its service life, an alarm prompt is issued through the alarm, thereby stopping production work and keeping the staff away from the first hydraulic cylinder 24, so as to avoid the first closing arm 20 opening due to the failure of the first hydraulic cylinder 24 and crushing the staff, thereby further improving the safety of the production device, and promptly opening the safety protection mechanism to prevent the occurrence of production accidents.

[0188] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A prefabricated insulation pipe production device, characterized in that: include: A main frame (1), a supporting and positioning mechanism (2), a forming mechanism, a track mechanism (3), a walking trolley mechanism (4) and a safety protection mechanism (5), wherein the main frame (1) comprises two end frames (8), a frame assembly, a first connecting member (9) and a second connecting member, wherein the two end frames (8) are arranged on the left and right sides of the frame assembly, and the two end frames (8) are respectively connected to the frame assembly through the second connecting member, and the frame assembly is composed of a plurality of intermediate frames (10), and two adjacent intermediate frames (10) are connected through the first connecting member (9), and the supporting and positioning mechanism (2) is arranged on both the left and right ends of the main frame (1), and the supporting and positioning mechanism (2 ) is provided with a working tube (6), an outer protective layer (7) is provided on the outside of the working tube (6), the forming mechanism is provided on the main frame (1), the forming mechanism is located between the two supporting and positioning mechanisms (2), the forming mechanism comprises a closing mechanism (16), a forming centering mechanism (17) and a welding edge limiting mechanism (18), a plurality of closing mechanisms (16) are provided, and the plurality of closing mechanisms (16) are arranged at equal intervals along the length direction of the frame component, the track mechanism (3) is provided at the top of the forming mechanism, the walking trolley mechanism (4) is slidably provided on the track mechanism (3), and the safety protection mechanism (5) is provided on the main frame (1); The supporting and positioning mechanism (2) comprises: A height adjustment mechanism (11), wherein the height adjustment mechanism (11) is arranged in the two end frames (8), and the lower end of the height adjustment mechanism (11) is fixedly connected to the upper end of the crossbar in the two end frames (8); A support frame (12), wherein the lower end of the support frame (12) is slidably connected to the upper end of the height adjustment mechanism (11), the upper end of the support frame (12) is arranged as a V-shaped surface, and the height adjustment mechanism (11) is used to adjust the height of the support frame (12); A front-to-back adjustment mechanism (13), the front-to-back adjustment mechanism (13) being arranged on the front and rear side walls of the support frame (12), one end of the front-to-back adjustment mechanism (13) being fixedly connected to the side wall of the support frame (12), and the other end of the front-to-back adjustment mechanism (13) being slidably connected to the side walls of the vertical rods of the two end frames (8), the front-to-back adjustment mechanism (13) being used to adjust the front-to-back position of the support frame (12) in the two end frames (8); A left-right adjustment mechanism (14), the left-right adjustment mechanism (14) being arranged at the left and right ends of the working tube (6), and the left-right adjustment mechanism (14) being fixedly connected to the support frame (12); A supporting wheel group (15), the supporting wheel group (15) being arranged on the upper surface of the support frame (12), the supporting wheel group (15) being arranged in a V-shape, and the side of the supporting wheel group (15) away from the upper surface of the support frame (12) being in contact with the outer wall of the working tube (6); The closing mechanism (16) comprises: A first support (19), wherein the first support (19) is arranged on the upper surface of the intermediate frame (10), the lower end of the first support (19) is fixedly connected to the upper surface of the intermediate frame (10), a first closing arm (20) is arranged on the front side of the upper end of the first support (19), one end of the first closing arm (20) is hingedly connected to the front side of the upper end of the first support (19), a plurality of the first closing arms (20) are connected as a whole through a third connecting member (21), a second closing arm (22) is arranged on the rear side of the upper end of the first support (19), one end of the second closing arm (22) is hingedly connected to the rear side of the upper end of the first support (19), a plurality of the second closing arms (22) are connected as a whole through a fourth connecting member (23), and the first closing arm (20) is adapted to the second closing arm (22); A first hydraulic cylinder (24), one end of the first hydraulic cylinder (24) is hingedly connected to the front side of the lower surface of the intermediate frame (10), and the other end of the first hydraulic cylinder (24) is hingedly connected to the side wall of the third connecting member (21); A second hydraulic cylinder (25), one end of the second hydraulic cylinder (25) is hingedly connected to the rear side of the lower surface of the intermediate frame (10), and the other end of the second hydraulic cylinder (25) is hingedly connected to the side wall of the fourth connecting member (23); The molding centering mechanism (17) comprises: a first linkage telescopic mechanism (26), the first linkage telescopic mechanism (26) being arranged on the upper surface of the first support (19), and a first limiting centering rod (27) being arranged on one end of the first linkage telescopic mechanism (26) facing the working tube (6); a second linkage telescopic mechanism (28), the second linkage telescopic mechanism (28) being arranged on the inner side of the first closing arm (20), the second linkage telescopic mechanism (28) being arranged in three numbers, the angle between two adjacent second linkage telescopic mechanisms (28) being 45 degrees, the second linkage telescopic mechanism (28) being arranged with a second limiting centering rod (29) facing one end of the working tube (6), the angle between the second limiting centering rod (29) and the first limiting centering rod (27) being 45 degrees; a third linkage telescopic mechanism (30), the third linkage telescopic mechanism (30) being arranged on the inner side of the second closing arm (22), the third linkage telescopic mechanism (30) being arranged in three numbers, the angle between two adjacent third linkage telescopic mechanisms (30) being 45 degrees, the third linkage telescopic mechanism (30) being arranged with a third limiting centering rod (31) facing one end of the working tube (6), the angle between the third limiting centering rod (31) and the first limiting centering rod (27) being 45 degrees; A synchronous transmission shaft (32), wherein the synchronous transmission shaft (32) is disposed between two adjacent first supports (19), and two ends of the synchronous transmission shaft (32) are rotatably connected to the two first supports (19) respectively; A reduction motor (33), the reduction motor (33) being arranged on the upper surface of the intermediate frame (10), the reduction motor (33) being connected to the synchronous transmission shaft (32) via a sprocket and a chain transmission; a sprocket transmission system (34), the sprocket transmission system (34) being in transmission connection with the synchronous transmission shaft (32), the sprocket transmission system (34) being arranged on the side walls of the first folding arm (20) and the second folding arm (22), the sprocket transmission system (34) being in transmission connection with the first linkage telescopic mechanism (26), the second linkage telescopic mechanism (28), and the third linkage telescopic mechanism (30) respectively; The welding edge limiting mechanism (18) comprises: a fourth linkage telescopic mechanism (35), the fourth linkage telescopic mechanism (35) being arranged at an end of the first closing arm (20) away from the first support (19), the fourth linkage telescopic mechanism (35) being transmission-connected to the sprocket transmission system (34), and a first limit assembly (36) being arranged at one end of the fourth linkage telescopic mechanism (35) facing the working tube (6); A fifth linkage telescopic mechanism (37), wherein the fifth linkage telescopic mechanism (37) is arranged at one end of the second closing arm (22) away from the first support (19), the fifth linkage telescopic mechanism (37) is transmission-connected to the sprocket transmission system (34), and a second limiting assembly (38) is arranged at one end of the fifth linkage telescopic mechanism (37) toward the working tube (6), and the second limiting assembly (38) and the first limiting assembly (36) are symmetrical with respect to the vertical center line of the first support (19).

2. A prefabricated thermal insulation pipe production device according to claim 1, characterized in that: It also includes a temperature pretreatment mechanism, which includes: a first hot air blower, the first hot air blower being arranged on the upper surface of the intermediate frame (10), the outlet end of the first hot air blower being connected to a first conveying pipe (39), the first conveying pipe (39) extending from one end of the first hot air blower away to the interior of the working pipe (6); A second hot air blower, the second hot air blower being arranged on the upper surface of the intermediate frame (10), the outlet end of the second hot air blower being connected to a second conveying pipe; A nozzle (40), wherein a plurality of nozzles (40) are disposed on the inner sides of the first closing arm (20) and the second closing arm (22), and the nozzles (40) are connected to an end of the second conveying pipe away from the second hot air blower.

3. The prefabricated thermal insulation pipe production device according to claim 1, characterized in that: The track mechanism (3) comprises: A first track (41), the first track (41) being arranged between two adjacent first closing arms (20), the first track (41) being located above the working tube (6), the two ends of the first track (41) being respectively fixedly connected to the inner side walls of the two first closing arms (20) on the left and right sides, a plurality of first tracks (41) being arranged, and two adjacent first tracks (41) being connected via a track joint (42); A second track (43), wherein the second track (43) is arranged above the two end frames (8), and the second track (43) is connected to the first track (41) close to the two end frames (8) through a track joint (42). A reinforcing rod (44) is arranged on one side of the second track (43), and the reinforcing rod (44) is arranged in an L shape. One end of the reinforcing rod (44) is fixedly connected to one end of the second track (43) away from the first track (41), and the other end of the reinforcing rod (44) is fixedly connected to the outer side wall of the first closing arm (20).

4. A prefabricated thermal insulation pipe production device according to claim 3, characterized in that: The walking trolley mechanism (4) comprises: A trolley body (45), wherein a plurality of V-shaped running wheels (46) are arranged on the side wall of the trolley body (45), wherein the V-shaped running wheels (46) are respectively adapted to the first track (41) and the second track (43), and the trolley body (45) is mounted on the track mechanism (3) via the V-shaped running wheels (46) and slides along the length direction of the track mechanism (3); A second motor (47), the second motor (47) being arranged on a side wall of the trolley body (45), the second motor (47) being connected to the V-shaped running wheel (46) through a pulley transmission system (48); An auxiliary mounting frame (49), the auxiliary mounting frame (49) being arranged outside the trolley body (45), and the auxiliary mounting frame (49) being fixedly connected to the trolley body (45); A first mounting frame (50), one end of the first mounting frame (50) being detachably connected to the auxiliary mounting frame (49), and the other end of the first mounting frame (50) extending below the auxiliary mounting frame (49) and provided with a welding mechanism (51); A second mounting frame (52), one end of the second mounting frame (52) is detachably connected to the auxiliary mounting frame (49), the other end of the second mounting frame (52) extends to the opposite side of the auxiliary mounting frame (49) and is provided with a heat-insulating layer making mechanism (53), the heat-insulating layer making mechanism (53) comprising: a discharge port (54), a first feed block (55), a second feed block (56), an auxiliary cleaning member (57), a gun mixing chamber (58), a gun pull rod (59) and a second oil cylinder (60) One end of the second oil cylinder (60) is fixedly connected to the end of the second mounting frame (52) away from the auxiliary mounting frame (49), and the other end of the second oil cylinder (60) is provided with the gun mixing chamber (58). The front and rear ends of the gun mixing chamber (58) are respectively provided with a first feed block (55) and a second feed block (56). A gun pull rod (59) is provided inside the gun mixing chamber (58), and a discharge port (54) is provided at the end of the gun mixing chamber (58) away from the second oil cylinder (60).

5. The prefabricated thermal insulation pipe production device according to claim 1, characterized in that: The safety protection mechanism (5) comprises: A first bracket (61), the first bracket (61) being arranged on the front upper surface of the intermediate frame (10), and the first bracket (61) being arranged in an L shape; A second bracket (62), the second bracket (62) being arranged on the front upper surface of the intermediate frame (10), the second bracket (62) being arranged in an L-shape, and the second bracket (62) being located in front of the first bracket (61); A support seat (63), the support seat (63) being arranged above the first bracket (61), and the support seat (63) being fixedly connected to an outer side wall of the third connecting member (21); A safety support rod (64), one end of which is hingedly connected to the outer side wall of the support seat (63), the other end of which extends downward to above the second bracket (62), and a baffle (65) is provided on the outer side wall of the safety support rod (64); A first cylinder (66), wherein the first cylinder (66) is arranged at the upper end of the first bracket (61), and a piston rod (67) of the first cylinder (66) is in contact with the rear side wall of the baffle (65).

6. A prefabricated thermal insulation pipe production device according to claim 2, characterized in that: Also includes: a first temperature sensor, the first temperature sensor being arranged on the inner wall of the working tube (6) and being used for detecting the initial temperature of the inner wall of the working tube (6); a second temperature sensor, the second temperature sensor being arranged on the intermediate frame (10) and being used for detecting an initial temperature of the environment outside the working tube (6); a temperature regulator, the temperature regulator being arranged on the intermediate frame (10), the temperature regulator being electrically connected to the first hot air blower, and the temperature regulator being used to adjust the hot air temperature of the first hot air blower; A controller, the controller being arranged on the intermediate frame (10), the controller being electrically connected to the first temperature sensor, the second temperature sensor and the temperature regulator respectively; The controller controls the first hot air blower to work based on the first temperature sensor, the second temperature sensor and the temperature regulator, including the following steps: Step 1: Based on the detection value of the first temperature sensor, the heat loss per unit time of the working tube (6) during the heating process is calculated by formula (1): Wherein, Q1 is the heat loss per unit time of the working tube (6) during the heating process, g is the gravitational acceleration, g is 9.8 m / s2, β is the volume expansion dilution of the working tube (6), K2 is the preset maximum temperature of the working tube (6), K1 is the initial temperature of the inner wall of the working tube (6) detected by the first temperature sensor, v1 is the kinematic viscosity of the hot air on the inner wall of the working tube (6), F1 is the outer diameter of the working tube (6), is the air thermal conductivity of the outer wall of the working tube (6), γ is the thermal conductivity of the material of the working tube (6), D2 is the inner diameter of the working tube (6), π is the circumference of a circle, π is 3.14, and L1 is the length of the working tube (6); Step 2: Based on step 1 and the detection value of the second temperature sensor, the target temperature of the hot air delivered by the first hot air blower is calculated by formula (2): wherein K0 is the target temperature of the hot air delivered by the first hot air blower, t1 is the preset working time of the first hot air blower, C1 is the specific heat capacity of the material of the working tube (6), m1 is the mass of the working tube (6), C2 is the specific heat capacity of the hot air blown out by the first hot air blower, q1 is the preset air volume of the first hot air blower, ρ is the density of the hot air blown out by the first hot air blower, η is the working efficiency of the first hot air blower, and K3 is the initial temperature of the environment outside the working tube (6) detected by the second temperature sensor; Step 3: Based on the calculation result of step 2, the controller controls the temperature regulator to adjust the hot air temperature of the first hot air blower, and the temperature regulator adjusts the hot air temperature of the first hot air blower to the target temperature of the hot air delivered by the first hot air blower.

7. The prefabricated thermal insulation pipe production device according to claim 1, characterized in that: Also includes: an oil pressure gauge, the oil pressure gauge being arranged on the first hydraulic cylinder (24) and being used to record the average oil pressure of the first hydraulic cylinder (24) each time it works; A timer, the timer being arranged on the intermediate frame (10) and being used to record a single working duration of the first hydraulic cylinder (24); an alarm, the alarm being arranged on the intermediate frame (10); a second controller, the second controller being electrically connected to the oil pressure gauge, the timer, and the alarm respectively; The second controller controls the alarm to work based on the oil pressure gauge and the recorded values ​​of the timer, comprising the following steps: Step 11: Based on the recorded values ​​of the timer and the oil pressure gauge, the actual life of the first hydraulic cylinder (24) is calculated by formula (3): Wherein, T0 is the actual life of the first hydraulic cylinder (24), P0 is the preset maximum oil pressure of the first hydraulic cylinder (24), and P i is the average oil pressure recorded by the oil pressure gauge when the first hydraulic cylinder (24) works for the i-th time, N is the total number of times the first hydraulic cylinder (24) works, T i is the working time of the first hydraulic cylinder (24) when it works for the ith time recorded by the timer, and δ1 is the fatigue strength reduction coefficient of the piston rod of the first hydraulic cylinder (24); Step 12: The second controller compares the actual life of the first hydraulic cylinder (24) with the preset life of the first hydraulic cylinder (24). When the actual life of the first hydraulic cylinder (24) is greater than the preset life of the first hydraulic cylinder (24), the second controller controls the alarm to issue an alarm prompt.

Images