A portable bevel grinding machine for fiberglass pipes

Abstract

The present invention discloses a portable bevel grinding machine for fiberglass pipes, specifically relating to the technical field of fiberglass pipe grinding machines, including a tensioner. A tensioning and positioning mechanism is provided inside the tensioner, and a grinding mechanism is provided on one side of the tensioner; the tensioning and positioning mechanism includes two tensioning discs. A plurality of protruding plates are fixedly provided on the sides of the two tensioning discs away from each other. A main rotating shaft and three cam rotating shafts are movably connected by bearings between the two tensioning discs. The main rotating shaft is arranged between the three cam rotating shafts. An intermediate driven wheel and a secondary driving wheel are fixedly provided at the outer end of the main rotating shaft, and the intermediate driven wheel is arranged at the end of the main rotating shaft. By providing a plurality of tensioning sliders to fix fiberglass pipes of various different pipe diameters, the structure of the present invention is simplified, making the present invention easy to carry and applicable to the site. Moreover, a dial assembly is used to control the precision of grinding, so as to accurately grind a tapered bevel of a required angle.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of glass fiber reinforced plastic pipe grinding machines, and particularly to a portable glass fiber reinforced plastic pipe bevel grinding machine. Background Art

[0002] Fiberglass reinforced plastic is a reinforced synthetic material composed of unsaturated resin, epoxy resin, etc. Due to its characteristics such as high specific strength, heat resistance, corrosion resistance, electrical insulation, and good technical and economic benefits, it is widely used in fields such as aviation, ships, petroleum, ocean engineering, and national defense.

[0003] During the construction process of glass fiber reinforced plastic pipes, socket and spigot butt joint of pipe ends is an essential task, and the pipe ends need to be pre-made with bevels before subsequent butt joint and gluing processes. In most cases, the bevels of the glass fiber reinforced plastic pipes transported to the construction site have been prefabricated in the workshop. However, due to the complexity of the on-site construction environment and some uncertain factors, it is often necessary to make new bevels. Especially during pipeline maintenance, the situation of making bevels on-site is even more common. If the pipeline is transported back to the workshop for production, it will not only delay the construction period but also incur considerable transportation costs, wasting manpower and financial resources. In some ship construction sites, it is even difficult to transport the pipeline outside the cabin.

[0004] The on-site grinding equipment in the prior art is turning grinding, which is large in size and heavy in weight, requiring a relatively large operating space. However, many on-site locations do not have sufficient operating space, and it is not easy to carry heavy equipment, which limits the use of the equipment. Moreover, the existing equipment tensioner can only adapt to a certain pipe diameter one by one, but there are many types of glass fiber reinforced plastic pipe diameters, so a large number of tensioners need to be made to adapt, which is inconvenient to use. For the above reasons, at present, most on-site bevels are still made by manual grinding, but it is time-consuming and laborious, and it is difficult to guarantee the grinding accuracy and surface quality. Summary of the Invention

[0005] Therefore, the embodiments of the present invention provide a portable glass fiber reinforced plastic pipe bevel grinding machine, which simplifies the structure of the present invention by setting multiple tensioning sliders to fix glass fiber reinforced plastic pipes of various different diameters, making the present invention easy to carry and applicable to the on-site situation. Moreover, a dial component is used to control the grinding accuracy, so as to accurately grind a tapered bevel of the required angle, and solve the problems of inconvenient on-site use and low grinding accuracy caused by large volume and manual grinding in the prior art.

[0006] In order to achieve the above object, the embodiments of the present invention provide the following technical solution: A portable glass fiber reinforced plastic pipe bevel grinding machine, including a tensioner, wherein a tensioning and positioning mechanism is arranged inside the tensioner, and a grinding mechanism is arranged on one side of the tensioner;

[0007] The tensioning and positioning mechanism includes two tensioning discs. On the sides of the two tensioning discs away from each other, a plurality of protruding plates are fixedly provided. Between the two tensioning discs, a main rotating shaft and three cam rotating shafts are movably connected by bearings. The main rotating shaft is arranged between the three cam rotating shafts. At the outer end of the main rotating shaft, a first-stage driven wheel and a second-stage driving wheel are fixedly provided. The first-stage driven wheel is arranged at the end of the main rotating shaft, and the second-stage driving wheel is arranged at the middle position of the tensioning disc. At the outer ends of the three cam rotating shafts, a second-stage driven wheel and a disc-shaped cam are fixedly provided. The disc-shaped cam is arranged at the middle position of the cam rotating shaft, and the second-stage driven wheel is arranged at one end of the cam rotating shaft. The second-stage driven wheel meshes with the second-stage driving wheel. A force-applying rod is rotatably connected between the two tensioning discs. The force-applying rod is arranged on one side of the second-stage driven wheel. At the outer end of the force-applying rod, close to the sides of the two tensioning discs, a first-stage driving wheel and a locking gear are fixedly provided. The first-stage driving wheel is arranged on one side of the first-stage driven wheel, and the first-stage driving wheel meshes with the first-stage driven wheel. A tensioning slider is arranged between every two of the protruding plates. The two sides of the tensioning slider are respectively in contact with the two protruding plates. At the bottom of the tensioning slider, a cam top block and a limiting block are fixedly provided. The limiting block is arranged on one side of the cam top block. The cam top block is in contact with the outer end of the disc-shaped cam. The two sides of the limiting block are respectively in contact with the two protruding plates. On the side of the tensioning disc away from the force-applying rod, a tensioner locking shaft is provided. The tensioner locking shaft penetrates through the tensioning disc and is slidably connected with the tensioning disc. At one end of the tensioner locking shaft, a locking shaft shoulder is fixedly provided. Inside the tensioner locking shaft, a locking shaft threaded hole is opened. At the outer end of the tensioner locking shaft, away from the tensioning disc, a locking idler wheel is rotatably connected. The locking idler wheel is arranged between the locking shaft shoulder and the tensioning disc;

[0008] The grinding mechanism includes a grinding frame. The grinding frame is arranged on one side of the tensioner. The grinding frame includes a main beam, a cross beam assembly, a main shaft slider assembly, a radial feed assembly, and a dial assembly. The main beam is arranged on one side of the tensioning disc. At the bottom end of the main beam, a grinding frame mounting hole is opened. Inside the grinding frame mounting hole, a connecting shaft is fixedly provided. One end of the connecting shaft is fixedly connected to one side of the tensioner. At the other end of the connecting shaft, a fixing gasket is provided. The fixing gasket is in contact with one side of the main beam. The cross beam assembly is arranged inside the main beam and penetrates through the main beam. The main shaft slider assembly is arranged on top of the cross beam assembly. The radial feed assembly is arranged on top of the main beam. The dial assembly is arranged between the cross beam assembly and the main shaft slider assembly. A main beam sliding groove is penetrated and opened on the main beam. The cross beam assembly, the radial feed assembly, and the dial assembly are all arranged inside the main beam sliding groove. A main beam side hole is opened on the front side of the main beam.

[0009] Further, the main shaft slider assembly includes a main beam main slider and a main beam secondary slider. The main beam main slider and the main beam secondary slider are respectively in contact with both sides of the main beam. A locking block is fixedly provided on one side of the main beam secondary slider. A main slider hinge support is fixedly provided on the side of the main beam main slider close to the main beam. A plurality of slider locking rods penetrate between the main beam secondary slider and the main beam main slider. The slider locking rods are threadedly connected to the main beam main slider and the main beam secondary slider. The slider locking rods pass through the main beam main slider and are threadedly connected to the main beam secondary slider.

[0010] Further, the radial feed assembly includes a load plate fixedly provided on the top of the main beam. A lead screw fixing bracket is fixedly provided at the bottom of the load plate. The lead screw fixing bracket is arranged inside the main beam. A radial feed lead screw is rotatably connected to the bottom of the lead screw fixing bracket. A radial feed nut is threadedly connected to the outer end of the radial feed lead screw. A nut fixing bracket is fixedly provided at the top of the radial feed nut. The radial feed lead screw is arranged inside the nut fixing bracket. The radial feed lead screw penetrates through the top of the nut fixing bracket and extends into the inside of the nut fixing bracket. Load bosses are fixedly provided on both sides of the bottom of the nut fixing bracket. The load bosses are arranged inside the side holes of the main beam. The load bosses are in sliding contact with the side holes of the main beam. Load holes are provided on the load bosses. The slider locking rods penetrate through the load holes. A radial feed handwheel is provided on the top of the load plate. The bottom end of the radial feed handwheel penetrates through the load plate and the lead screw fixing bracket and is fixedly connected to the top end of the radial feed lead screw.

[0011] Further, the cross beam assembly includes a cross beam lead screw module arranged at the bottom of the nut fixing bracket. A cross beam hinge support is fixedly provided on the top of the cross beam lead screw module. The cross beam hinge support is arranged at the bottom of the main slider hinge support and is inserted into the main slider hinge support. Two locking plates are fixedly provided on the front side and the rear side of the cross beam lead screw module. Arc-shaped waist holes are provided on the locking plates. A cross beam locking bolt is threadedly connected inside the arc-shaped waist holes. The cross beam locking bolt is arranged on the front side of the locking block and extends into the locking block. The cross beam locking bolt is threadedly connected to the locking block. A cross beam lead screw module slider is threadedly connected to the cross beam lead screw module. A motor connecting plate is fixedly provided at the bottom of the cross beam lead screw module slider. A motor is fixedly provided on one side of the motor connecting plate. The output shaft of the motor penetrates through the motor connecting plate and extends out of the other side of the motor connecting plate. A grinding wheel protective cover is fixedly provided on the other side of the motor connecting plate. A grinding wheel is arranged inside the grinding wheel protective cover. One side of the grinding wheel is fixedly connected to the output shaft of the motor.

[0012] Further, the dial assembly includes a dial, the dial is arranged between two locking plates, the locking block is arranged at the rear side of the dial, a dial rotating shaft penetrates through the interior of the dial, the dial rotating shaft is fixedly connected with the dial, the front end of the dial rotating shaft passes through the dial and extends to the front side of the dial, a dial screw is arranged inside the dial rotating shaft, the dial screw passes through the dial rotating shaft and extends into the interior of the locking block, and the dial screw is threadedly connected with both the locking block and the dial rotating shaft. A dial positioning block is arranged at the bottom of the dial, and the dial positioning block is arranged on the top of the crossbeam screw module.

[0013] Further, threaded holes are formed in both the front side and the rear side of the locking block, a dial mounting hole is formed in one side of the locking block, and the dial is arranged inside the dial mounting hole.

[0014] Further, an axial feed handwheel is arranged on one side of the crossbeam screw module, and the axial feed handwheel is fixedly connected with the crossbeam screw module.

[0015] Further, a wrench joint is fixedly arranged at one end of the force applying rod, and the wrench joint is in contact with one side of one of the tensioning discs.

[0016] Further, V-shaped surfaces are arranged at both ends of the tensioning slider.

[0017] Further, a main slider boss is fixedly arranged on the top of the main beam main slider, and the main slider boss is arranged inside the main beam sliding groove.

[0018] The embodiments of the present invention have the following advantages:

[0019] 1. By arranging a plurality of circumferentially symmetric tensioning sliders that can radially and continuously extend, and firmly tensioning the tensioning sliders from the inside of the fiberglass pipe to the pipe wall, the connecting shaft is coaxially arranged with the tensioner and fixed on the tensioner. Moreover, the crossbeam is perpendicular to the main beam and can slide longitudinally along the main beam. An installation hole perpendicular to the main beam and matching with the connecting shaft is arranged at one end of the main beam. The main beam is rotationally connected and axially fixed with the connecting shaft through the installation hole. The grinding wheel driven by the motor is slidably connected longitudinally with the crossbeam. In this way, the grinding wheel has degrees of freedom of circumferential, radial, and longitudinal movement relative to the pipe, realizing the grinding of the bevel. Moreover, the arranged tensioning sliders form a continuous interval between the maximum retracted end and the maximum extended end, which can accommodate all pipes with inner diameters falling within this interval. In this way, a large number of tensioners are avoided, and the practicability of the equipment is improved. Compared with the prior art, the structure of the present invention is simple, small in size, and light in weight, can be carried in a portable manner, has small requirements for the operating space, and can be used in complex working conditions on-site;

[0020] 2. The present invention grinds the fiberglass pipe using a grinding wheel, such that the cutting force provided by the grinding wheel is small. Therefore, structural components such as the main beam and cross beam can be made lightweight, and each degree-of-freedom module is relatively independent with a simple structure and no transmission system between the degrees of freedom, making the present invention lighter. Moreover, by setting a dial component, it is also possible to ensure that the present invention can precisely grind a tapered groove with the required angle, so it is suitable for use at a construction site with complex working conditions to replace manual grinding, and its grinding efficiency and accuracy are much higher than manual grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0023] Figure 1 is a schematic diagram of the overall structure provided by the present invention;

[0024] Figure 2 is an axonometric view of the tensioner provided by the present invention;

[0025] Figure 3 is a perspective view of the tensioner provided by the present invention;

[0026] Figure 4 is a three-dimensional view of the tension slider provided by the present invention;

[0027] Figure 5 is a three-dimensional view of the tensioner locking shaft provided by the present invention;

[0028] Figure 6 is a three-dimensional view of the grinding frame provided by the present invention;

[0029] Figure 7 is a three-dimensional view of the radial feed assembly provided by the present invention;

[0030] Figure 8 is a three-dimensional view of the main beam slider assembly and the cross beam assembly provided by the present invention;

[0031] Figure 9 This is a partially enlarged view of the angle disk assembly provided by the present invention.

[0032] In the figure: 1. Tensioner; 101. Connecting shaft; 2. Grinding frame; 201. Cross beam assembly; 202. Main shaft slider assembly; 203. Radial feed assembly; 204. Dial assembly; 205. Grinding frame mounting hole; 206. Fixed gasket; 3. Main rotating shaft; 4. Tensioning disk; 5. Cam rotating shaft; 6. Extension plate; 7. Tensioning slider; 701. Cam top block; 702. Limit block; 703. V-shaped surface; 8. Disk cam; 9. Wrench joint; 10. Force adding rod; 11. Tensioner locking bolt; 12. First-stage driving wheel; 13. First-stage driven wheel; 14. Second-stage driving wheel; 15. Second-stage driven wheel; 16. Locking gear; 17. Locking idler wheel; 18. Tensioner locking shaft; 1801. Locking shaft shoulder; 1802. Locking shaft threaded hole; 19. Main beam; 1901. Main beam chute; 1902. Main beam side hole; 20. Dial; 21. Dial screw; 22. Dial rotating shaft; 23. Dial positioning block; 24. Load plate; 25. Lead screw fixing bracket; 26. Radial feed lead screw; 27. Radial feed nut; 28. Nut fixing bracket; 2802. Load boss; 2801. Load hole; 29. Radial feed handwheel; 30. Main beam main slider; 3001. Main slider boss; 31. Main beam secondary slider; 32. Main slider hinge support; 33. Slider locking rod; 34. Locking block; 35. Cross beam lead screw module; 3501. Cross beam lead screw module slider; 3502. Axial feed handwheel; 36. Motor; 37. Grinding wheel; 38. Grinding wheel protective cover; 39. Motor connecting plate; 40. Cross beam hinge support; 41. Locking plate; 4101. Arc-shaped waist hole; 4102. Cross beam locking bolt. Specific embodiments

[0033] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0034] Referring to the attached Figures 1-9 to the specification, a portable glass steel pipe bevel grinding machine of this embodiment includes a tensioner 1. A tensioning and positioning mechanism is provided inside the tensioner 1, and a grinding mechanism is provided on one side of the tensioner 1;

[0035] The tensioning and positioning mechanism includes two tensioning discs 4. On the sides of the two tensioning discs 4 away from each other, a plurality of protruding plates 6 are fixedly provided. Between the two tensioning discs 4, a main rotating shaft 3 and three cam rotating shafts 5 are movably connected by bearings. The main rotating shaft 3 is arranged between the three cam rotating shafts 5. At the outer end of the main rotating shaft 3, a first-stage driven wheel 13 and a second-stage driving wheel 14 are fixedly provided. The first-stage driven wheel 13 is arranged at the end of the main rotating shaft 3. The second-stage driving wheel 14 is arranged at the middle position of the tensioning disc 4. At the outer ends of the three cam rotating shafts 5, a second-stage driven wheel 15 and a disc-shaped cam 8 are fixedly provided. The disc-shaped cam 8 is arranged at the middle position of the cam rotating shaft 5. The second-stage driven wheel 15 is arranged at one end of the cam rotating shaft 5. The second-stage driven wheel 15 meshes with the second-stage driving wheel 14. A force-applying rod 10 is rotatably connected between the two tensioning discs 4. The force-applying rod 10 is arranged on one side of the second-stage driven wheel 15. At the outer end of the force-applying rod 10, close to the sides of the two tensioning discs 4, a first-stage driving wheel 12 and a locking gear 16 are fixedly provided. The first-stage driving wheel 12 is arranged on one side of the first-stage driven wheel 13. The first-stage driving wheel 12 meshes with the first-stage driven wheel 13. A tensioning slider 7 is arranged between every two protruding plates 6. The two sides of the tensioning slider 7 are respectively in contact with the two protruding plates 6. At the bottom of the tensioning slider 7, a cam top block 701 and a limiting block 702 are fixedly provided. The limiting block 702 is arranged on one side of the cam top block 701. The cam top block 701 is in contact with the outer end of the disc-shaped cam 8. The two sides of the limiting block 702 are respectively in contact with the two protruding plates 6. On the side of the tensioning disc 4 away from the force-applying rod 10, a tensioner locking shaft 18 is provided. The tensioner locking shaft 18 penetrates through the tensioning disc 4 and is slidably connected to the tensioning disc 4. At one end of the tensioner locking shaft 18, a locking shaft shoulder 1801 is fixedly provided. Inside the tensioner locking shaft 18, a locking shaft threaded hole 1802 is opened. At the outer end of the tensioner locking shaft 18, away from the tensioning disc 4, a locking idler wheel 17 is rotatably connected. The locking idler wheel 17 is arranged between the locking shaft shoulder 1801 and the tensioning disc 4. Among them, the cam top block 701 is made of a material with high hardness and a heat treatment method, which is wear-resistant without increasing the weight of the entire tensioning slider 7. The limiting block 702 is used to prevent the tensioning slider 7 from slipping out of the chute formed between the two protruding plates 6;

[0036] The grinding mechanism includes a grinding frame 2, which is arranged on one side of the tensioner 1. The grinding frame 2 includes a main beam 19, a cross beam assembly 201, a main shaft slider assembly 202, a radial feed assembly 203 and a dial assembly 204. The main beam 19 is arranged on one side of the tensioning disc 4. A grinding frame mounting hole 205 is opened at the bottom end of the main beam 19. A connecting shaft 101 is fixedly arranged inside the grinding frame mounting hole 205. One end of the connecting shaft 101 is fixedly connected to one side of the tensioner 1. A fixing gasket 206 is arranged at the other end of the connecting shaft 101, and the fixing gasket 206 is in contact with one side of the main beam 19. The cross beam assembly 201 is arranged inside the main beam 19 and penetrates through the main beam 19. The main shaft slider assembly 202 is arranged on the top of the cross beam assembly 201. The radial feed assembly 203 is arranged on the top of the main beam 19. The dial assembly 204 is arranged between the cross beam assembly 201 and the main shaft slider assembly 202. A main beam sliding groove 1901 is penetrated and opened on the main beam 19. The cross beam assembly 201, the radial feed assembly 203 and the dial assembly 204 are all arranged inside the main beam sliding groove 1901. A main beam side hole 1902 is opened on the front side of the main beam 19.

[0037] Further, the main shaft slider assembly 202 includes a main beam main slider 30 and a main beam sub-slider 31. The main beam main slider 30 and the main beam sub-slider 31 are respectively in contact with both sides of the main beam 19. A locking block 34 is fixedly arranged on one side of the main beam sub-slider 31. A main slider hinge support 32 is fixedly arranged on the side of the main beam main slider 30 close to the main beam 19. A plurality of slider locking rods 33 penetrate between the main beam sub-slider 31 and the main beam main slider 30. The slider locking rods 33 are threadedly connected to the main beam main slider 30 and the main beam sub-slider 31. The slider locking rod 33 passes through the main beam main slider 30 and is threadedly connected to the main beam sub-slider 31, connecting the two into one body and making them closely attached to the main beam 19. When the slider locking rod 33 is loosened, the slider assembly can slide along the main beam. When the slider locking rod 33 is tightened, the slider assembly is locked on the main beam 19.

[0038] Further, the radial feed assembly 203 includes a load plate 24, which is fixedly arranged on the top of the main beam 19. A lead screw fixing bracket 25 is fixedly arranged at the bottom of the load plate 24. The lead screw fixing bracket 25 is arranged inside the main beam 19. A radial feed lead screw 26 is rotatably connected to the bottom of the lead screw fixing bracket 25. A radial feed nut 27 is threadedly connected to the outer end of the radial feed lead screw 26. A nut fixing bracket 28 is fixedly arranged at the top of the radial feed nut 27. The radial feed lead screw 26 is arranged inside the nut fixing bracket 28. The radial feed lead screw 26 penetrates through the top of the nut fixing bracket 28 and extends into the inside of the nut fixing bracket 28. Load bosses 2802 are fixedly arranged on both sides of the bottom of the nut fixing bracket 28. The load bosses 2802 are arranged inside the side holes 1902 of the main beam. The load bosses 2802 are in sliding contact with the side holes 1902 of the main beam. Load holes 2801 are formed in the load bosses 2802. The slider locking rod 33 penetrates through the load holes 2801. A radial feed handwheel 29 is arranged on the top of the load plate 24. The bottom end of the radial feed handwheel 29 penetrates through the load plate 24 and the lead screw fixing bracket 25 and is fixedly connected to the top end of the radial feed lead screw 26. During installation, the lower slider locking rod 33 passes through the load holes 2801. When the radial feed handwheel 29 is rotated, the radial feed nut 27 drives the nut connecting bracket 28 to move radially together. The nut connecting bracket 28 drives the main beam slider assembly 202 to slide along the main beam 19 through the load holes 2801.

[0039] Further, the cross beam assembly 201 includes a cross beam lead screw module 35, which is arranged at the bottom of the nut fixing bracket 28. A cross beam hinge support 40 is fixedly arranged at the top of the cross beam lead screw module 35. The cross beam hinge support 40 is arranged at the bottom of the main slider hinge support 32 and is inserted into the main slider hinge support 32. Two locking plates 41 are fixedly arranged on the front side and the rear side of the cross beam lead screw module 35. Arc-shaped waist holes 4101 are formed in the locking plates 41. A cross beam locking bolt 4102 is threadedly connected inside the arc-shaped waist holes 4101. The cross beam locking bolt 4102 is arranged at the front side of the locking block 34 and extends into the inside of the locking block 34. The cross beam locking bolt 4102 is threadedly connected to the locking block 34. A cross beam lead screw module slider 3501 is threadedly connected to the cross beam lead screw module 35. A motor connecting plate 39 is fixedly arranged at the bottom of the cross beam lead screw module slider 3501. A motor 36 is fixedly arranged on one side of the motor connecting plate 39. The output shaft of the motor 36 penetrates through the motor connecting plate 39 and extends out of the other side of the motor connecting plate 39. A grinding wheel protective cover 38 is fixedly arranged on the other side of the motor connecting plate 39. A grinding wheel 37 is arranged inside the grinding wheel protective cover 38. One side of the grinding wheel 37 is fixedly connected to the output shaft of the motor 36. The cross beam hinge support 40 and the main slider hinge support 32 form a hinge pair. The cross beam assembly 201 can rotate around the hinge axis within a certain angle range.

[0040] Furthermore, the dial assembly 204 includes a dial 20 which is arranged between two locking plates 41. The locking block 34 is arranged at the rear side of the dial 20. A dial rotating shaft 22 penetrates through the interior of the dial 20. The dial rotating shaft 22 is fixedly connected to the dial 20. The front end of the dial rotating shaft 22 passes through the dial 20 and extends to the front side of the dial 20. A dial screw 21 is arranged inside the dial rotating shaft 22. The dial screw 21 passes through the dial rotating shaft 22 and extends into the interior of the locking block 34. The dial screw 21 is threadedly connected to both the locking block 34 and the dial rotating shaft 22. A dial positioning block 23 is arranged at the bottom of the dial 20. The dial positioning block 23 is arranged on the top of the crossbeam lead screw module 35. The dial 20 is made into a polygonal disc-shaped part with discrete scale values or can also be made into a disc-shaped part with continuous scale values. The use of the dial assembly 204 ensures the angular accuracy when grinding the tapered slope.

[0041] Furthermore, threaded holes are formed in both the front side and the rear side of the locking block 34. A dial mounting hole is formed in one side of the locking block 34. The dial 20 is arranged inside the dial mounting hole, which is convenient for restricting the position of the dial 20.

[0042] Furthermore, an axial feed handwheel 3502 is arranged on one side of the crossbeam lead screw module 35. The axial feed handwheel 3502 is fixedly connected to the crossbeam lead screw module 35. By shaking the axial feed handwheel 3502, the motor and the grinding wheel can be driven to move axially. The angular adjustment of the crossbeam assembly 201 can achieve the grinding of tapered grooves at different angles.

[0043] Furthermore, a wrench joint 9 is fixedly arranged at one end of the force applying rod 10. The wrench joint 9 is in contact with one side of one of the tensioning discs 4, which is convenient for connecting the wrench to rotate the force applying rod 10.

[0044] Furthermore, V-shaped surfaces 703 are arranged at both ends of the tensioning slider 7. The angles and dimensions of the V-shaped surfaces 703 are consistent with the V-shaped grooves between the two extending plates 6.

[0045] Furthermore, a main slider boss 3001 is fixedly arranged on the top of the main beam main slider 30. The main slider boss 3001 is arranged inside the main beam sliding groove 1901. The main slider boss 3001 on the main beam main slider 30 is stuck in the main beam sliding groove 1901 to play a guiding role.

[0046] The specific implementation scenario is as follows: put the tensioner 1 with the fixed connecting shaft 101 into the FRP pipe and align it, use a wrench to turn the wrench joint 9 of the force rod 10 until the tensioning slider is firmly tensioned on the inner wall of the pipe; keep the wrench joint 9 stationary, use another wrench joint 9 to turn the locking bolt 11 and lock it. The test shows that after locking, the tensioner 1 is firmly tensioned on the inner wall of the FRP pipe. When the tensioner 1 is tensioned, ensure that the tensioner locking bolt 11 is in a loose state, use a wrench to turn the wrench joint 9 of the force rod 10, and the input torque drives the three disc cams 8 to rotate counterclockwise after two-stage transmission and force amplification. The working surface of the cam 8 applies a radial lifting force to the tensioning slider 7 through the cam top block 701, so that the tensioning slider 7 moves radially outward. Slide and tension on the inner wall of the FRP tube; in this process, the locking idler wheel 17 is meshed with the locking gear 16 and rotates freely around the tensioner locking shaft 18. When the tensioning slider 7 is firmly tensioned on the inner wall of the FRP tube, keep the force torque and use a wrench to tighten the tensioner locking bolt 11 clockwise. The tensioner locking bolt 11 pulls the tensioner locking shaft 18 to move axially outward. The locking shaft shoulder 1801 pulls the locking idler wheel 17 to gradually press on the tensioning disk 4. The locking idler wheel 17 is locked on the tensioning disk 4 by friction, and the locking gear 16 and the force rod 10 meshed with the locking idler wheel 17 are also locked, and the entire transmission system is locked; then release the wrench, and the tensioning slider 7 is firmly tensioned on the inner wall of the FRP tube. Install the grinding frame 2 on the connecting shaft 101 through the grinding frame mounting hole 205, and lock the fixing gasket 206; loosen the beam locking bolt 4102, the beam assembly 201 will be able to rotate around the beam hinge axis within a certain range, turn the dial 20 to select the scale surface corresponding to the required conical groove angle, pull the beam assembly 201 so that the dial fixing block 23 bears against the selected scale surface on the dial 20, and then tighten the beam locking bolt 4102 to fasten the beam assembly 201 to the main beam slider assembly 202; loosen the slider locking rod 33, turn the radial feed handwheel 29, adjust the radial position of the grinding wheel, that is, adjust the grinding radial cutting amount, and after adjustment, lock the slider locking rod 33, so that the beam assembly 201 is fixed at the required angle It is fixedly connected to the main beam 19; power on the motor 36, shake the axial feed handwheel 3502 to axially feed the grinding wheel, and start grinding. After the axial feed reaches a certain depth, the grinding frame 2 can be manually held to rotate around the connecting shaft 101. After one round of grinding, the next round of grinding is carried out to complete the entire groove grinding work; after the grinding is completed, loosen the fixed gasket 206 and remove it, then remove the grinding frame 2, loosen the tensioner locking bolt 11 with a wrench, reset the tensioning slider 7, remove the tensioner 1, and complete the entire grinding work. The use of the dial assembly 204 ensures the angle accuracy when grinding the conical slope. This implementation specifically solves the problems of inconvenience in on-site use and low grinding accuracy caused by large volume and manual grinding in the prior art.

[0047] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made thereto based on the present invention, which will be obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of the present invention claimed.

Claims

1. A portable bevel grinding machine for glass steel pipes, comprising a tensioner (1), characterized in that: The tensioner (1) is internally provided with a tensioning and positioning mechanism, and a grinding mechanism is arranged on one side of the tensioner (1); The tensioning and positioning mechanism includes two tensioning discs (4). On the sides of the two tensioning discs (4) away from each other, a plurality of protruding plates (6) are fixedly arranged. A main rotating shaft (3) and three cam rotating shafts (5) are movably connected between the two tensioning discs (4) through bearings. The main rotating shaft (3) is arranged between the three cam rotating shafts (5). An first-stage driven wheel (13) and a second-stage driving wheel (14) are fixedly arranged at the outer end of the main rotating shaft (3). The first-stage driven wheel (13) is arranged at the end of the main rotating shaft (3), and the second-stage driving wheel (14) is arranged at the middle position of the tensioning disc (4). Second-stage driven wheels (15) and disc cams (8) are fixedly arranged at the outer ends of the three cam rotating shafts (5). The disc cam (8) is arranged at the middle position of the cam rotating shaft (5), and the second-stage driven wheel (15) is arranged at one end of the cam rotating shaft (5). The second-stage driven wheel (15) meshes with the second-stage driving wheel (14). A force-applying rod (10) is rotatably connected between the two tensioning discs (4). The force-applying rod (10) is arranged on one side of the second-stage driven wheel (15). An first-stage driving wheel (12) and a locking gear (16) are fixedly arranged at the outer end of the force-applying rod (10) close to the two tensioning discs (4). The first-stage driving wheel (12) is arranged on one side of the first-stage driven wheel (13), and the first-stage driving wheel (12) meshes with the first-stage driven wheel (13). Tensioning sliders (7) are arranged between every two of the protruding plates (6). The two sides of the tensioning slider (7) are respectively in contact with the two protruding plates (6). A cam top block (701) and a limiting block (702) are fixedly arranged at the bottom of the tensioning slider (7). The limiting block (702) is arranged on one side of the cam top block (701). The cam top block (701) is in contact with the outer end of the disc cam (8). The two sides of the limiting block (702) are respectively in contact with the two protruding plates (6). A tensioner locking shaft (18) is arranged on the side of the tensioning disc (4) away from the force-applying rod (10). The tensioner locking shaft (18) penetrates through the tensioning disc (4) and is slidably connected with the tensioning disc (4). A locking shaft shoulder (1801) is fixedly arranged at one end of the tensioner locking shaft (18). A locking shaft threaded hole (1802) is formed inside the tensioner locking shaft (18). A locking idle wheel (17) is rotatably connected to the end of the tensioner locking shaft (18) away from the tensioning disc (4). The locking idle wheel (17) is arranged between the locking shaft shoulder (1801) and the tensioning disc (4); The grinding mechanism includes a grinding frame (2), which is arranged on one side of the tensioner (1). The grinding frame (2) includes a main beam (19), a cross beam assembly (201), a main shaft slider assembly (202), a radial feed assembly (203) and a dial assembly (204). The main beam (19) is arranged on one side of the tensioning disc (4). A grinding frame mounting hole (205) is formed at the bottom end of the main beam (19). A connecting shaft (101) is fixedly arranged inside the grinding frame mounting hole (205). One end of the connecting shaft (101) is fixedly connected to one side of the tensioner (1). A fixing gasket (206) is arranged at the other end of the connecting shaft (101). The fixing gasket (206) is in contact with one side of the main beam (19). The cross beam assembly (201) is arranged inside the main beam (19) and penetrates through the main beam (19). The main shaft slider assembly (202) is arranged on the top of the cross beam assembly (201). The radial feed assembly (203) is arranged on the top of the main beam (19). The dial assembly (204) is arranged between the cross beam assembly (201) and the main shaft slider assembly (202). A main beam sliding groove (1901) is formed through the main beam (19). The cross beam assembly (201), the radial feed assembly (203) and the dial assembly (204) are all arranged inside the main beam sliding groove (1901). A main beam side hole (1902) is formed on the front side of the main beam (19). The main shaft slider assembly (202) includes a main beam main slider (30) and a main beam secondary slider (31). The main beam main slider (30) and the main beam secondary slider (31) are respectively in contact with both sides of the main beam (19). A locking block (34) is fixedly arranged on one side of the main beam secondary slider (31). A main slider hinge support (32) is fixedly arranged on the side of the main beam main slider (30) close to the main beam (19). A plurality of slider locking rods (33) penetrate between the main beam secondary slider (31) and the main beam main slider (30). The slider locking rods (33) are threadedly connected to the main beam main slider (30) and the main beam secondary slider (31). One end of the force applying rod (10) is fixedly provided with a wrench joint (9), and the wrench joint (9) is in contact with one side of one of the tensioning discs (4). V-shaped surfaces (703) are arranged at both ends of the tensioning slider (7).

2. The portable glass steel pipe bevel grinding machine according to claim 1, wherein: The radial feed assembly (203) includes a load plate (24), the load plate (24) is fixedly arranged on the top of the main beam (19), a lead screw fixing bracket (25) is fixedly arranged at the bottom of the load plate (24), the lead screw fixing bracket (25) is arranged inside the main beam (19), the bottom of the lead screw fixing bracket (25) is rotatably connected to a radial feed lead screw (26), the outer end of the radial feed lead screw (26) is threadedly connected to a radial feed nut (27), a nut fixing bracket (28) is fixedly arranged at the top of the radial feed nut (27), the radial feed lead screw (26) is arranged inside the nut fixing bracket (28), the radial feed lead screw (26) penetrates through the top of the nut fixing bracket (28) and extends into the inside of the nut fixing bracket (28), load bosses (2802) are fixedly arranged on both sides of the bottom of the nut fixing bracket (28), the load bosses (2802) are arranged inside the side holes (1902) of the main beam, the load bosses (2802) are in sliding contact with the side holes (1902) of the main beam, load holes (2801) are formed in the load bosses (2802), a slider locking rod (33) penetrates through the load holes (2801), a radial feed handwheel (29) is arranged on the top of the load plate (24), and the bottom end of the radial feed handwheel (29) penetrates through the load plate (24) and the lead screw fixing bracket (25) and is fixedly connected to the top end of the radial feed lead screw (26).

3. The portable glass steel pipe bevel grinding machine according to claim 2, wherein: The cross beam assembly (201) includes a cross beam lead screw module (35), the cross beam lead screw module (35) is arranged at the bottom of the nut fixing bracket (28), a cross beam hinge support (40) is fixedly arranged at the top of the cross beam lead screw module (35), the cross beam hinge support (40) is arranged at the bottom of the main slider hinge support (32) and inserted into the main slider hinge support (32), two locking plates (41) are fixedly arranged on the front side and the rear side of the cross beam lead screw module (35), arc-shaped waist holes (4101) are formed in the locking plates (41), a cross beam locking bolt (4102) is threadedly connected inside the arc-shaped waist holes (4101), the cross beam locking bolt (4102) is arranged at the front side of the locking block (34) and extends into the locking block (34), the cross beam locking bolt (4102) is threadedly connected to the locking block (34), a cross beam lead screw module slider (3501) is threadedly connected to the cross beam lead screw module (35), a motor connecting plate (39) is fixedly arranged at the bottom of the cross beam lead screw module slider (3501), a motor (36) is fixedly arranged on one side of the motor connecting plate (39), the output shaft of the motor (36) penetrates through the motor connecting plate (39) and extends out of the other side of the motor connecting plate (39), a grinding wheel protective cover (38) is fixedly arranged on the other side of the motor connecting plate (39), a grinding wheel (37) is arranged inside the grinding wheel protective cover (38), and one side of the grinding wheel (37) is fixedly connected to the output shaft of the motor (36).

4. The portable glass steel pipe bevel grinding machine according to claim 3, wherein: The dial assembly (204) includes a dial (20), the dial (20) is arranged between two locking plates (41), the locking block (34) is arranged at the rear side of the dial (20), a dial rotating shaft (22) penetrates through the interior of the dial (20), the dial rotating shaft (22) is fixedly connected to the dial (20), the front end of the dial rotating shaft (22) passes through the dial (20) and extends to the front side of the dial (20), a dial screw (21) is arranged inside the dial rotating shaft (22), the dial screw (21) passes through the dial rotating shaft (22) and extends into the interior of the locking block (34), and the dial screw (21) is threadedly connected to both the locking block (34) and the dial rotating shaft (22). A dial positioning block (23) is arranged at the bottom of the dial (20), and the dial positioning block (23) is arranged at the top of the crossbeam lead screw module (35).

5. The portable glass steel pipe bevel grinding machine according to claim 4, characterized in that: Threaded holes are formed in both the front side and the rear side of the locking block (34), and a dial mounting hole is formed in one side of the locking block (34), and the dial (20) is arranged inside the dial mounting hole.

6. The portable glass steel pipe bevel grinding machine according to claim 3, wherein: An axial feed handwheel (3502) is arranged on one side of the crossbeam lead screw module (35), and the axial feed handwheel (3502) is fixedly connected to the crossbeam lead screw module (35).

7. A portable bevel grinding machine for glass steel pipes according to claim 1, characterized in that: A main slider boss (3001) is fixedly arranged at the top of the main beam main slider (30), and the main slider boss (3001) is arranged inside the main beam sliding groove (1901).

Images