A pipe groove grinding device

Abstract

The invention discloses a pipe groove grinding device, comprising a tensioner, a grinding device and a connecting shaft; the tensioner comprises a wedge block, a supporting device, a lead screw, a tensioning disc and a driving mechanism for driving the lead screw to rotate; the wedge block reciprocates on the lead screw and is provided with a plurality of inclined surfaces; the supporting device is fixedly connected between two tensioning discs and is arranged in the radial direction of the tensioning disc; the supporting device comprises a slider and an abutment plate, the slider is provided with a slider wedge sliding along the inclined surface, and the slider is fixedly connected to the abutment plate; the lead screw is rotatably connected between the two tensioning discs, and its axis is located at the center of the tensioning disc; the grinding device comprises a grinding frame and a grinder, the grinding frame is arranged on one side of the tensioner, the connecting shaft mounting hole provided on the grinding frame is rotatably connected with one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected with the tensioner; the grinder reciprocates on the grinding frame in the horizontal and vertical directions. The problem that the adjustment amount of the tensioner of the existing equipment is difficult to control and the tensioning stability is poor is solved.

Description

Technical Field

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

[0002] The pipe ends need to be pre-grooved before the butt jointing process can be carried out. In most cases, the grooves of the pipes delivered to the construction site have been pre-made in the workshop, but due to the complexity of the on-site construction environment and some uncertain factors, new grooves are often required.

[0003] When grinding the bevel of a pipe, the grinding equipment needs to be installed on the end of the pipe through a tensioner to grind the circumferential bevel of the end of the pipe. The existing equipment tensioner can only adapt to a certain pipe diameter one-to-one, but there are many types of pipe diameters, and a large number of tensioners need to be manufactured to adapt to different types of pipe diameters. Not only is it inconvenient to replace, but it also increases the cost of grinding the bevel of the pipe.

[0004] In order to solve the problem that the tensioner of the existing equipment can only adapt to a certain pipe diameter one-to-one, patent application CN112536673A discloses a portable FRP pipe bevel grinder, which fixes FRP pipes of various different diameters by setting a plurality of tensioning positioning mechanisms adjusted by cams. However, the cam adjustment amount is difficult to control, the tensioning stability is poor, and it is also more prone to wear. Summary of the invention

[0005] The invention provides a pipe groove grinding device to overcome the problems that the adjustment amount of the tensioner of the existing equipment is difficult to control and the tensioning stability is poor.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A pipe groove grinding device comprises a tensioner, a grinding device and a connecting shaft;

[0008] The tensioner comprises a wedge block, a supporting device, a lead screw, a tensioning disc and a driving mechanism capable of driving the lead screw to rotate under the action of an external force;

[0009] The wedge block is installed on the lead screw, the wedge block can reciprocate on the lead screw, and the wedge block is provided with a plurality of inclined surfaces, the number of which is not less than the number of the supporting devices;

[0010] At least three of the supporting devices are fixedly connected between the two tensioning disks, the angles between two adjacent supporting devices are equal, and the supporting devices are arranged in the radial direction of the tensioning disk;

[0011] The supporting device comprises a slider and an abutment plate, wherein the slider is provided with a slider wedge capable of sliding along the inclined surface, the slider wedge abuts the inclined surface, the slider is fixedly connected to the abutment plate, and the abutment plate can abut against the inner wall of the pipe material;

[0012] The lead screw is rotatably connected between the two tensioning discs, and the axis of the lead screw is located at the center of the tensioning disc;

[0013] The grinding equipment includes a grinding frame and a grinder. The grinding frame is arranged on one side of the tensioner. The grinding frame is provided with a connecting shaft mounting hole. The connecting shaft mounting hole is rotatably connected to one end of the connecting shaft. The other end of the connecting shaft is fixedly connected to one side of the tensioner. The grinder is installed on the grinding frame and can reciprocate in the horizontal and vertical directions on the grinding frame.

[0014] Furthermore, the supporting device also includes a movable rod, a fixed module and a return spring. The fixed module is fixed between two tensioning plates. The movable rod can reciprocate on the fixed module along the radial direction of the tensioning plate. One end of the movable rod close to the lead screw is fixedly connected to the slider, and the other end of the movable rod is fixedly connected to the abutment plate. The return spring is arranged between the slider and the fixed module, and the return spring is sleeved on the movable rod.

[0015] Furthermore, it also includes a detachable supporting claw, which is fixedly connected to the abutment plate, and the supporting claw is provided with an arc surface that can fit the inner wall of the pipe.

[0016] Furthermore, the driving mechanism includes a driving rod, a driving wheel and a driven wheel;

[0017] The driving rod is rotatably connected between two tensioning plates, and the driving rod is arranged between the angles of any two adjacent supporting devices. An input joint is provided at one end of the driving rod, and the driving wheel is fixed at the other end of the driving rod. The driven wheel is fixed at one end of the lead screw. The driving wheel is meshed with the driven wheel, and the input joint can drive the driving rod to rotate under the action of external force.

[0018] Furthermore, it also includes a locking mechanism, which includes a locking gear, a locking shaft, a locking idler wheel and a locking bolt;

[0019] The locking gear is fixed to the end of the driving rod away from the driving wheel;

[0020] The locking shaft is arranged on the tensioning disk on the side away from the driving wheel, the locking shaft passes through the tensioning disk and is slidably connected with the tensioning disk, a locking shaft shoulder is arranged at one end of the locking shaft, and a locking shaft threaded hole adapted to the locking bolt is opened inside the locking shaft;

[0021] The locking idler wheel is rotatably connected to the locking shaft, the locking idler wheel is installed between the locking shaft shoulder and the tensioning disk, and the locking idler wheel is meshed with the locking gear.

[0022] Further, the grinding frame includes a main beam, an axial feeding mechanism, a main beam slider mechanism, a radial feeding mechanism and a taper adjustment mechanism;

[0023] The main beam is arranged on one side of the tensioning disk, a connecting shaft mounting hole is opened at the bottom end of the main beam, the connecting shaft mounting hole is rotatably connected to one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected to one side of the tensioner;

[0024] The axial feeding mechanism passes through the main beam, the axial feeding mechanism is fixedly connected to the grinder, and the axial feeding mechanism can drive the grinder to reciprocate in the horizontal direction;

[0025] The main beam slider mechanism is arranged on the top of the axial feed mechanism, the main beam slider mechanism is connected to the axial feed mechanism through the taper adjustment mechanism, the main beam slider mechanism is connected to the radial feed mechanism, and the main beam slider mechanism can slide along the main beam;

[0026] The radial feeding mechanism is arranged on the top of the main beam, and the radial feeding mechanism can drive the main beam slider mechanism to reciprocate in the vertical direction;

[0027] The taper adjustment mechanism is arranged between the axial feeding mechanism and the main beam slider mechanism;

[0028] The taper adjustment mechanism includes a dial, an adjustment plate, a dial support, an articulated support, an articulated rod, a dial shaft washer, a dial shaft bolt and a dial shaft;

[0029] The scale plate is arranged between the scale plate shaft gasket and the scale plate support, a gap is left between the scale plate and the scale plate shaft gasket, the scale plate is provided with a scale plate mounting hole, the scale plate is a polygonal disc-shaped member, the distances between each side of the polygon and the scale plate mounting hole are different, and the scale plate can be rotated on the scale plate shaft through the scale plate mounting hole;

[0030] The two adjustment plates are symmetrically fixed on the top of the axial feeding mechanism, the adjustment plates are provided with oblong holes, and the dial is arranged between the two adjustment plates;

[0031] The scale plate support is fixed to one end of the main beam slider mechanism close to the adjustment plate, and the scale plate support is connected to the adjustment plate by bolts passing through the oblong holes;

[0032] The hinged support is fixed to one end of the main beam slider mechanism away from the adjustment plate;

[0033] The hinged rod is fixed on the top of the axial feeding mechanism, and the hinged rod can be hinged with the hinged support;

[0034] The dial shaft bolt passes through the dial shaft washer and the dial shaft in sequence, and the dial shaft bolt is connected to the main beam slider mechanism through threads;

[0035] The dial shaft is locked on the main beam slider mechanism by a dial shaft bolt, the dial shaft passes through the dial support, and one end of the dial shaft away from the dial shaft washer abuts against the main beam slider mechanism.

[0036] Furthermore, the main beam slider mechanism includes a first main beam slider, a second main beam slider, a slider threaded rod and a positioning shaft;

[0037] The first slider of the main beam is arranged on a side of the main beam close to the tensioner, and the second slider of the main beam is arranged on a side of the main beam away from the tensioner. The first slider of the main beam is provided with a threaded hole for installing a slider threaded rod, and the second slider of the main beam is provided with a through hole through which the slider threaded rod can pass. The second slider of the main beam can slide along the slider threaded rod, and the first slider of the main beam is connected to the second slider of the main beam through the slider threaded rod, and the opposite surfaces of the first slider of the main beam and the second slider of the main beam abut against the main beam;

[0038] The positioning shaft is arranged between the first slider of the main beam and the second slider of the main beam. The positioning shaft is provided with a positioning section and a supporting section. The supporting section is vertically fixed on the second slider of the main beam. The first slider of the main beam is provided with a positioning hole which is gap-matched with the positioning section.

[0039] Further, the radial feed mechanism includes a load plate, a screw support, a radial feed screw, a radial feed block, a main beam slider connecting frame and a radial feed handle;

[0040] The load plate is fixed on the top of the main beam, and a screw support is fixed on the bottom of the load plate. The screw support is arranged inside the main beam, and the screw support is rotatably connected to the radial feed screw. The radial feed block can reciprocate on the radial feed screw, and the radial feed block is fixedly connected to the main beam slider connecting frame. The radial feed screw penetrates the main beam slider connecting frame, and the bottom of the main beam slider connecting frame is connected to the main beam slider mechanism. A radial feed handle is provided on the top of the load plate, and the bottom end of the radial feed handle penetrates the load plate and the screw support and is fixedly connected to the top end of the radial feed screw.

[0041] Further, the axial feed mechanism includes an axial feed mounting frame, an axial feed block, an axial feed screw and an axial feed handwheel;

[0042] The axial feed mounting frame is connected to the main beam slider mechanism through a taper adjustment mechanism;

[0043] The axial feed block can reciprocate on the axial feed screw, and a grinder is installed at the bottom of the axial feed block;

[0044] The axial feed screw is horizontally arranged on the axial feed mounting frame, and the axial feed screw is rotatably connected to the axial feed mounting frame;

[0045] The axial feed handwheel can drive the axial feed screw to rotate.

[0046] Furthermore, it also includes a protection mechanism, which includes a movable baffle, a guide rail and a dust suction device;

[0047] The movable baffle can slide along the guide rail, and the movable baffle can reciprocate in the horizontal direction;

[0048] The guide rail passes through the axial feeding mechanism, and the guide rail is fixed on the axial feeding mechanism;

[0049] The dust suction device comprises a dust suction funnel and a dust suction pipe. The dust suction funnel is fixed on a movable baffle. The mouth of the dust suction funnel is arranged relative to the grinding wheel of the grinder. The dust suction pipe is connected to the dust suction funnel and can be externally connected to a vacuum cleaner.

[0050] Beneficial effects of the present invention:

[0051] A pipe groove grinding device disclosed in the present application includes at least three supporting devices, which can not only facilitate the positioning of the present application inside the pipe, but also ensure the stability of the present application after installation inside the pipe; the driving mechanism drives the lead screw to rotate under the action of external force, the wedge block reciprocates on the lead screw, the wedge block drives the slider to move, and the relative sliding of the inclined surface of the wedge block and the slider can convert the displacement of the wedge block along the lead screw into the radial displacement of the slider along the tensioning disk. The relative sliding enables the slider to smoothly change its position in the radial direction of the tensioning disk, thereby solving the problem that the adjustment amount of the tensioner of the existing equipment is difficult to control and the tensioning stability is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0053] Figure 1 It is a structural schematic diagram of a tensioner of a pipe groove grinding device disclosed in the present invention after removing a tensioning disc on one side;

[0054] Figure 2 It is a structural schematic diagram of a tensioner of a pipe groove grinding device disclosed in the present invention after the tensioning disc on the other side is removed;

[0055] Figure 3 It is a structural schematic diagram of a locking shaft of a pipe groove grinding device disclosed in the present invention;

[0056] Figure 4 It is a structural schematic diagram of a wedge block of a pipe groove grinding device disclosed in the present invention;

[0057] Figure 5 It is a structural schematic diagram of a slider of a pipe groove grinding device disclosed in the present invention;

[0058] Figure 6 A schematic diagram of a pipe groove grinding device disclosed in the present invention installed in a pipe Figure 1 ;

[0059] Figure 7 A schematic diagram of a pipe groove grinding device disclosed in the present invention installed in a pipe Figure 2 ;

[0060] Figure 8 It is a structural schematic diagram of a grinding device for a pipe groove grinding device disclosed in the present invention;

[0061] Fig. 9 It is a structural schematic diagram of a scale plate of a pipe groove grinding device disclosed in the present invention;

[0062] Fig.10 A schematic diagram of the structure of a pipe groove grinding device disclosed in the present invention, wherein the main beam and the axial feed protective cover are removed from the grinding device Figure 1 ;

[0063] Fig.11 A schematic diagram of the structure of a pipe groove grinding device disclosed in the present invention, wherein the main beam and the axial feed protective cover are removed from the grinding device Figure 2 ;

[0064] Fig.12 A schematic diagram of the structure of a pipe groove grinding device disclosed in the present invention, in which a main beam and a baffle are removed from a grinding device;

[0065] Fig.13a A sectional view of a taper adjustment mechanism of a pipe groove grinding device disclosed in the present invention Figure 1 ;

[0066] Fig.13b A sectional view of a taper adjustment mechanism of a pipe groove grinding device disclosed in the present invention Figure 2 ;

[0067] Fig.14 It is a structural schematic diagram of a main beam slider connecting frame of a pipe groove grinding device disclosed in the present invention;

[0068] Fig.15 It is a structural schematic diagram of a positioning shaft of a pipe groove grinding device disclosed in the present invention;

[0069] Fig.16 It is a structural schematic diagram of a connecting plate of a pipe groove grinding device disclosed in the present invention;

[0070] In the figure: 1, wedge block, 1-1, inclined plane, 2, supporting device, 2-1, slider, 2-1-1, slider oblique wedge, 2-2, movable rod, 2-3, fixed module, 2-4, abutment plate, 2-5, return spring, 3, lead screw, 4, tensioning plate, 5, driving rod, 5-1, input connector, 6, driving wheel, 7, driven wheel, 8, locking gear, 9, locking shaft, 9-1, locking shaft shoulder, 9-2, locking shaft threaded hole, 10, locking idler wheel, 11, locking bolt, 12, supporting claw, 12-1, arc surface, 13, main beam, 13-1, main beam slide groove, 13-2, Main beam positioning slide, 14, axial feed mechanism, 14-1, axial feed mounting frame, 14-2, axial feed block, 14-3, axial feed screw, 14-4, axial feed handwheel, 14-5, axial feed protective cover, 14-6, axial feed driving wheel, 14-7, axial feed driven wheel, 14-A, contact surface, 15, main beam slider mechanism, 15-1, main beam first slider, 15-1-1, positioning hole, 15-2, main beam second slider, 15-2-1, first positioning boss, 15-2-2, second positioning boss, 15-3, slider threaded rod, 15-4, Positioning shaft, 15-4-1, positioning section, 15-4-2, support section, 15-5, positioning blind hole, 16, radial feed mechanism, 16-1, load plate, 16-2, screw support, 16-3, radial feed screw, 16-4, radial feed block, 16-5, main beam slider connecting frame, 16-5-1, mounting hole, 16-5-2, boss, 16-6, radial feed handle, 17, taper adjustment mechanism, 17-1, dial, 17-1-1, dial mounting hole, 17-1-2, scale surface, 17-2, adjustment plate, 17-2-1, oblong hole, 17-3 , dial support, 17-4, hinged support, 17-5, hinged rod, 17-6, dial shaft gasket, 17-7, dial shaft bolt, 17-8, dial shaft, 17-A, axis, 17-B, hinge point, 18, connecting shaft mounting hole, 19, grinder, 19-1, grinding wheel, 20, connecting shaft, 21, movable baffle, 21-1, baffle, 21-2, connecting plate, 21-2-1, guide rail through hole, 22, guide rail, 23, dust suction device, 23-1, dust suction funnel, 23-2, dust suction pipe, 24, control switch box, 25, handle, A, pipe. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] This embodiment provides a pipe groove grinding device, including a tensioner, a grinding device and a connecting shaft 20;

[0073] like Figure 1 and Figure 2 As shown, the tensioner comprises a wedge block 1, a support device 2, a lead screw 3, a tensioning disc 4 and a driving mechanism capable of driving the lead screw 3 to rotate under the action of an external force;

[0074] The wedge block 1 is mounted on the lead screw 3, and the wedge block 1 can reciprocate on the lead screw 3. Figure 4 As shown, the wedge block 1 is provided with a plurality of inclined surfaces 1-1, and the number of the inclined surfaces 1-1 is not less than the number of the supporting devices 2, so as to ensure that the inclined surfaces 1-1 can correspond to the supporting devices 2;

[0075] Preferably, the number of the inclined surfaces 1-1 is twice the number of the supporting devices 2, so that when the inclined surface 1-1 currently in contact with the slider wedge 2-1-1 is severely worn, it only needs to remove the wedge block 1 and rotate and reinstall it for normal use, saving maintenance costs;

[0076] At least three of the support devices 2 are fixedly connected between two tension disks 4, the angles between two adjacent support devices 2 are equal, and the support devices 2 are arranged in the radial direction of the tension disk 4;

[0077] Preferably, a pipe groove grinding device disclosed in the present application includes three supporting devices, and the three supporting devices 2 form a stable triangular structure, which can save unnecessary supporting devices 2 and ensure the stability of the tensioner after installation;

[0078] like Figure 2 As shown, the supporting device 2 includes a slider 2-1 and an abutment plate 2-4. Figure 5 As shown, the slider 2-1 is provided with a slider wedge 2-1-1 that can slide along the inclined surface 1-1, the slider wedge 2-1-1 abuts against the inclined surface 1-1, the slider 2-1 is fixedly connected to the abutment plate 2-4, and the abutment plate 2-4 can abut against the inner wall of the pipe material;

[0079] The lead screw 3 is rotatably connected between two tensioning disks 4, and the axis of the lead screw 3 is located at the center of the tensioning disk 4;

[0080] The tensioner includes at least three supporting devices, so that the tensioner has at least three contact points with the inner wall of the pipe through the abutment plates 2-4, which can facilitate the positioning of the tensioner inside the pipe and prevent the axis of the screw 3 from deviating from the center of the pipe, and ensure the stability of the tensioner after installation inside the pipe;

[0081] The driving mechanism drives the screw 3 to rotate under the action of external force, and the wedge block 1 is provided with a thread adapted to the screw 3. The wedge block 1 reciprocates on the screw 3, and the wedge block 1 drives the slider 2-1 to move. The relative sliding of the inclined surface 1-1 of the wedge block 1 and the slider wedge 2-1-1 of the slider 2-1 can convert the displacement of the wedge block 1 along the screw 3 into the radial displacement of the slider 2-1 along the tensioning disk 4. The relative sliding not only enables the slider 2-1 to smoothly change its radial position of the tensioning disk 4, but also makes the radial position change of the slider 2-1 easy to control. The abutment plate of the support device 2 can abut the inner wall of the pipe material. The abutment plate 2-4 moves under the drive of the slider 2-1, so that the support device 2 can abut against pipes of different diameters.

[0082] The grinding equipment includes a grinding frame and a grinding machine 19. The grinding frame is arranged on one side of the tensioner. Figure 7 As shown, the grinding frame is provided with a connecting shaft mounting hole 18, the connecting shaft mounting hole 18 is rotatably connected to one end of a connecting shaft 20, the other end of the connecting shaft 20 is fixedly connected to one side of the tensioner, the grinding machine 19 is installed on the grinding frame, and the grinding machine 19 can reciprocate in the horizontal and vertical directions on the grinding frame;

[0083] Preferably, the screw 3 is a trapezoidal screw, which has high transmission power, precise positioning and self-locking function. The screw structure composed of the wedge block 1 and the screw 3 and the inclined wedge structure composed of the inclined surface 1-1 and the slider wedge 2-1-1 both have the characteristics of force amplification and self-locking, which can effectively increase the tensioning force and reliably self-lock at any position.

[0084] In a specific embodiment, Figure 1 and Figure 2 As shown, the supporting device 2 also includes two movable rods 2-2, a fixed module 2-3 and a reset spring 2-5. The two movable rods 2-2 can prevent a single movable rod 2-2 from causing uneven force on the abutment plate 2-4, causing the abutment plate 2-4 to deflect. The fixed module 2-3 is fixed between two tensioning disks 4. The movable rod 2-2 can reciprocate on the fixed module 2-3 along the radial direction of the tensioning disk 4. One end of the movable rod 2-2 close to the lead screw 3 is fixedly connected to the slider 2-1, and the other end of the movable rod 2-2 is fixedly connected to the abutment plate 2-4. Figure 1 As shown, the return spring 2-5 is arranged between the slider 2-1 and the fixed module 2-3, and the return spring 2-5 is sleeved on the movable rod 2-2;

[0085] The fixed module 2-3 guides the movement direction of the movable rod 2-2. Driven by the slider 2-1, the movable rod 2-2 moves on the fixed module 2-3 along the radial direction of the tensioning disk 4. The abutment plate 2-4 moves with the movable rod 2-2, and then abuts against the inner wall of the pipe. When the driving mechanism drives the screw 3 to rotate in the opposite direction under the action of external force, the inclined surface 1-1 no longer applies force to the slider wedge 2-1-1. At this time, the reset spring 2-5 releases the accumulated elastic potential energy, causing the slider 2-1 to reset.

[0086] In a specific embodiment, Figure 1 As shown, it also includes a detachable supporting claw 12, which is fixedly connected to the abutment plate 2-4. The supporting claw 12 is provided with an arc surface 12-1 that can fit the inner wall of the pipe, so that the supporting claw 12 can better abut the inner wall of the pipe. The supporting claw 12 provided with the arc surface 12-1 can reduce the contact deformation between the abutment plate 2-4 and the inner wall of the low-rigidity pipe, thereby improving the accuracy of the groove processing of the grinding equipment. By replacing supporting claws 12 of different specifications to adapt to different pipes, the arc surfaces 12-1 of supporting claws 12 of different specifications correspond to the inner walls of pipes of different specifications.

[0087] In a specific embodiment, Figure 2 As shown, the driving mechanism includes a driving rod 5, a driving wheel 6 and a driven wheel 7;

[0088] The driving rod 5 is rotatably connected between the two tensioning disks 4. The driving rod 5 is arranged between the angles of any two adjacent supporting devices 2. Figure 1 As shown, one end of the driving rod 5 is provided with an input connector 5-1, the driving wheel 6 is fixed to the other end of the driving rod 5, the driven wheel 7 is fixed to one end of the lead screw 3, the driving wheel 6 is meshed with the driven wheel 7, and the input connector 5-1 can drive the driving rod 5 to rotate under the action of an external force;

[0089] The construction personnel rotate the driving rod 5 by twisting the input joint 5-1, and the driving wheel 6 rotates along with the driving rod 5, and the driven wheel 7 rotates under the driving wheel 6, so that the lead screw 3 rotates under the driving wheel 7. The input joint 5-1 and the driving wheel 6 are respectively at the two ends of the driving rod 5, so that when the tensioner is placed in the pipe A, the input joint 5-1 can be close to the end of the pipe A that needs to be beveled, which is convenient for the construction personnel to adjust the driving mechanism through the input joint 5-1. The relative position of the input joint 5-1 is shown in FIG. Figure 7 As shown;

[0090] In actual operation, the construction personnel first put the tensioner fixed with the connecting shaft 20 into the pipe and align it. When the tensioner needs to be adjusted, use a wrench to turn the input connector 5-1 of the drive rod 5. The input torque is transmitted to the screw 3 through the drive rod 5. The screw 3 drives the wedge block 1 to abut the slider 2-1 to apply a lifting force, so that the slider 2-1 is radially displaced along the tensioning disk 4, driving the abutment plate 2-4 to radially displace along the tensioning disk 4, thereby tightening the support claw 12 on the inner wall of the pipe A.

[0091] In a specific embodiment, a locking mechanism is also included, such as Figure 1 and Figure 2 As shown, the locking mechanism includes a locking gear 8, a locking shaft 9, a locking idler wheel 10 and a locking bolt 11;

[0092] The locking gear 8 is fixed to the end of the driving rod 5 away from the driving wheel 6;

[0093] The locking shaft 9 is arranged on the tensioning disc 4 on the side away from the driving wheel 6. Figure 2 As shown, the locking shaft 9 passes through the tensioning disk 4 and is slidably connected to the tensioning disk 4. Figure 3 As shown, a locking shaft shoulder 9-1 is provided at one end of the locking shaft 9, and a locking shaft threaded hole 9-2 adapted to the locking bolt 11 is provided inside the locking shaft 9;

[0094] The locking idler wheel 10 is rotatably connected with the locking shaft 9. The locking idler wheel 10 is installed between the locking shaft shoulder 9-1 and the tensioning plate 4. The locking idler wheel 10 is meshed with the locking gear 8. In actual operation, under the premise of ensuring that the tensioner is reliably tensioned in the pipe, the construction personnel tighten the locking bolt 11 with a wrench, so that the locking shaft 9 presses the locking idler wheel 10 through the locking shaft shoulder 9-1, and limits the rotation of the locking idler wheel 10 through the friction force, thereby limiting the rotation of the locking gear 8 meshed with the locking idler wheel 10, and then making the driving rod 5 no longer rotate, so as to realize the locking of the driving mechanism. The vibration generated when the grinding equipment is working can easily cause the self-locking loosening of the screw structure composed of the wedge block 1 and the screw 3 and the inclined wedge structure composed of the inclined surface 1-1 and the slider wedge 2-1-1. The locking mechanism can lock the screw 3 by locking the driving mechanism to achieve self-locking and anti-loosening.

[0095] In a specific embodiment, Figure 8 As shown, the grinding frame includes a main beam 13, an axial feeding mechanism 14, a main beam slider mechanism 15, a radial feeding mechanism 16 and a taper adjustment mechanism 17;

[0096] The main beam 13 is arranged on one side of the tensioning plate 4, and a connecting shaft mounting hole 18 is opened at the bottom end of the main beam 13. The connecting shaft mounting hole 18 is rotatably connected to one end of a connecting shaft 20, and the other end of the connecting shaft 20 is fixedly connected to one side of the tensioner;

[0097] The axial feeding mechanism 14 passes through the main beam 13, and the axial feeding mechanism 14 is fixedly connected to the grinder 19, and the axial feeding mechanism 14 can drive the grinder 19 to reciprocate in the horizontal direction;

[0098] The main beam slider mechanism 15 is arranged on the top of the axial feed mechanism 14, the main beam slider mechanism 15 is connected to the axial feed mechanism 14 through the taper adjustment mechanism 17, the main beam slider mechanism 15 is connected to the radial feed mechanism 16, and the main beam slider mechanism 15 can slide along the main beam 13;

[0099] The radial feeding mechanism 16 is disposed on the top of the main beam 13, and the radial feeding mechanism 16 can drive the main beam slider mechanism 15 to reciprocate in the vertical direction;

[0100] like Figure 8 As shown, it also includes a taper adjustment mechanism 17, and the taper adjustment mechanism 17 is arranged between the axial feeding mechanism 14 and the main beam slider mechanism 15;

[0101] like Fig.10 , Fig.11 and Fig.13a As shown, the taper adjustment mechanism 17 includes a dial 17-1, an adjustment plate 17-2, a dial support 17-3, a hinge support 17-4, a hinge rod 17-5, a dial shaft washer 17-6, a dial shaft bolt 17-7 and a dial shaft 17-8;

[0102] like Fig.13a As shown, the scale plate 17-1 is disposed between the scale plate shaft gasket 17-6 and the scale plate support 17-3, and a gap is left between the scale plate 17-1 and the scale plate shaft gasket 17-6. Fig. 9 As shown, the scale plate 17-1 is provided with a scale plate mounting hole 17-1-1, and the scale plate 17-1 is a polygonal disc-shaped member, and the spacings between the edges of the polygon and the scale plate mounting hole 17-1-1 are all different, so that the outer edge of the polygonal disc-shaped member forms a scale surface 17-1-2 with different scales, and the scale plate 17-1 can rotate on the scale plate shaft 17-8 through the scale plate mounting hole 17-1-1, and the gap between the scale plate 17-1 and the scale plate shaft gasket 17-6 enables the scale plate 17-1 to rotate smoothly on the scale plate shaft 17-8 between the scale plate shaft gasket 17-6 and the scale plate support 17-3;

[0103] The two adjustment plates 17-2 are symmetrically fixed on the top of the axial feeding mechanism 14. Fig.11 As shown, the adjustment plate 17-2 is provided with an oblong hole 17-2-1, and the dial 17-1 is provided between the two adjustment plates 17-2;

[0104] The scale plate support 17-3 is fixed to one end of the main beam slider mechanism 15 close to the adjustment plate 17-2, and the scale plate support 17-3 is connected to the adjustment plate 17-2 by a bolt passing through the oblong hole 17-2-1;

[0105] The hinged support 17-4 is fixed to one end of the main beam slider mechanism 15 away from the adjustment plate 17-2;

[0106] The hinge rod 17-5 is fixed to the top of the axial feeding mechanism 14, and the hinge rod 17-5 can be hinged to the hinge support 17-4;

[0107] like Fig.13a As shown, the dial shaft bolt 17-7 sequentially passes through the dial shaft washer 17-6 and the dial shaft 17-8, and the dial shaft bolt 17-7 is connected to the main beam slider mechanism 15 through threads;

[0108] The dial shaft 17 - 8 is locked on the main beam slider mechanism 15 by the dial shaft bolt 17 - 7 , and the dial shaft 17 - 8 passes through the dial support 17 - 3 , and one end of the dial shaft 17 - 8 away from the dial shaft washer 17 - 6 abuts against the main beam slider mechanism 15 .

[0109] In a specific embodiment, Fig.13a As shown, a positioning blind hole 15 - 5 is provided at one end of the main beam slider mechanism 15 close to the dial shaft 17 - 8 , and the positioning blind hole 15 - 5 enables the dial shaft 17 - 8 to be inserted so that the dial shaft 17 - 8 can be firmly locked on the main beam slider mechanism 15 .

[0110] In a specific embodiment, Fig.10 and Fig.11 As shown, the main beam slider mechanism 15 includes a first main beam slider 15-1, a second main beam slider 15-2, a slider threaded rod 15-3 and a positioning shaft 15-4;

[0111] The first slider 15-1 of the main beam is arranged on a side of the main beam 13 close to the tensioner, and the second slider 15-2 of the main beam is arranged on a side of the main beam 13 away from the tensioner. The first slider 15-1 of the main beam is provided with a threaded hole for installing a slider threaded rod 15-3, and the second slider 15-2 of the main beam is provided with a through hole through which the slider threaded rod 15-3 can pass. The second slider 15-2 of the main beam can slide along the slider threaded rod 15-3. The first slider 15-1 of the main beam is connected to the second slider 15-2 of the main beam through the slider threaded rod 15-3, and the opposite surfaces of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam abut against the main beam 13;

[0112] The slider threaded rod 15-3 is threadedly connected to the first slider 15-1 of the main beam, and the second slider 15-2 of the main beam slides along the slider threaded rod 15-3. The spacing between the first slider 15-1 of the main beam and the second slider 15-2 of the main beam is adjusted by loosening or tightening the slider threaded rod 15-3.

[0113] The positioning shaft 15-4 is arranged between the first slide block 15-1 of the main beam and the second slide block 15-2 of the main beam. Fig.15 As shown, the positioning shaft 15-4 is provided with a positioning section 15-4-1 and a supporting section 15-4-2, and the supporting section 15-4-2 is vertically fixed on the second slider 15-2 of the main beam. Fig.10 As shown, the first slide block 15-1 of the main beam is provided with a positioning hole 15-1-1 which is gap-matched with the positioning section 15-4-1;

[0114] In order to facilitate the assembly of the slider threaded rod 15-3, the diameter of the through hole on the second slider 15-2 of the main beam needs to be larger than the diameter of the slider threaded rod 15-3, which results in a larger gap between the through hole on the second slider 15-2 of the main beam and the slider threaded rod 15-3, causing the parallelism accuracy of the first slider 15-1 and the second slider 15-2 of the main beam to be unable to be guaranteed during the sliding process along the main beam 13, and it is easy to cause the relative position of the through hole and the threaded hole of the two to be misaligned, which ultimately results in the main beam slider mechanism 15 sliding along the main beam 13, that is, sliding along the radial direction of the pipe, the relative position accuracy of the first slider 15-1 and the second slider 15-2 of the main beam cannot be guaranteed;

[0115] like Fig.13b As shown, the axial feeding mechanism 14 is provided with a contact surface 14-A capable of abutting against the scale surface 17-1-2 of the scale plate 17-1. The error in the relative position accuracy of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam will affect the distance of the axis 17-A of the scale plate shaft 17-8 fixed on the first slider 15-1 of the main beam relative to the contact surface 14-A, thereby affecting the distance of the axis of the scale plate 17-1 installed on the scale plate shaft 17-8 relative to the contact surface 14-A, which will cause the angular accuracy of the axis of the scale plate 17-1 relative to the contact surface 14-A to deviate, causing the angle of the axial feeding mechanism 14 relative to the pipe to deviate from the value set on the scale surface 17-1-2 after the axial feeding mechanism 14 rotates around the hinge 17-B and abuts against the scale surface 17-1-2, resulting in an inaccurate groove angle obtained after the pipe is polished;

[0116] like Fig.10As shown, two positioning shafts 15-4 are vertically fixed on the second slider 15-2 of the main beam, and the positioning section 15-4-1 of the positioning shaft 15-4 is inserted into the positioning hole 15-1-1 which is clearance-matched therewith, so as to constrain the relative sliding of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam, so as to ensure the parallelism accuracy of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam. At the same time, the two positioning shafts 15-4 can avoid the relative position dislocation of the through hole and the threaded hole of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam, thereby ensuring the relative position accuracy of the first slider 15-1 of the main beam and the second slider 15-2 of the main beam and avoiding the problem of inaccurate groove angle.

[0117] In practical applications, the arrangement of the through holes and threaded holes on the first slider 15-1 of the main beam and the second slider 15-2 of the main beam is not limited to the form described above, provided that the through holes and the threaded holes correspond one to one. The positions of the through holes and the threaded holes can be interchanged, that is, a threaded hole for installing the slider threaded rod 15-3 can be provided on the second slider 15-2 of the main beam, and a through hole for passing the slider threaded rod 15-3 can be provided on the first slider 15-1 of the main beam, so that the first slider 15-1 of the main beam can slide along the slider threaded rod 15-3.

[0118] In a specific embodiment, Fig.10 As shown, the second slider 15-2 of the main beam is provided with a first positioning boss 15-2-1 and a second positioning boss 15-2-2. Figure 6 As shown, the main beam 13 is provided with a main beam positioning groove 13-2 matched with the first positioning boss 15-2-1 and the second positioning boss 15-2-2 on one side thereof, and the first positioning boss 15-2-1 and the second positioning boss 15-2-2 can slide along the main beam positioning groove 13-2 to guide the main beam second slider 15-2 to move smoothly on the main beam 13, thereby guiding the main beam slider mechanism 15.

[0119] In a specific embodiment, Fig.10 and Fig.11 As shown, the radial feed mechanism 16 includes a load plate 16-1, a screw support 16-2, a radial feed screw 16-3, a radial feed block 16-4, a main beam slider connecting frame 16-5 and a radial feed handle 16-6;

[0120] The load plate 16-1 is fixed on the top of the main beam 13, and a screw support 16-2 is fixed on the bottom of the load plate 16-1. The screw support 16-2 is arranged inside the main beam 13, and the screw support 16-2 is rotatably connected to the radial feed screw 16-3. The radial feed block 16-4 is provided with a thread adapted to the radial feed screw 16-3, and the radial feed block 16-4 can reciprocate on the radial feed screw 16-3. The radial feed block 16-4 is fixedly connected to the main beam slider connecting frame 16-5, and the radial feed screw 16-3 passes through the main beam slider connecting frame 16-5. The bottom of the main beam slider connecting frame 16-5 is connected to the main beam slider mechanism 15. A radial feed handle 16-6 is provided on the top of the load plate 16-1, and the bottom end of the radial feed handle 16-6 passes through the load plate 16-1 and the screw support 16-2 and is fixedly connected to the top of the radial feed screw 16-3.

[0121] In a specific embodiment, Fig.14 As shown, the main beam slider connecting frame 16-5 is provided with a mounting hole 16-5-1 and a boss 16-5-2, and the slider threaded rod 15-3 passes through the mounting hole 16-5-1, so that the main beam slider mechanism 15 is connected to the radial feed mechanism 16, as shown in FIG. Figure 7 As shown, the main beam 13 is provided with a main beam slide groove 13-1, and the boss 16-5-2 can slide in the main beam slide groove 13-1. The main beam slide groove 13-1 can guide the main beam slider connecting frame 16-5 to move in the vertical direction, and at the same time can limit the movement of the main beam slider connecting frame 16-5 in the horizontal direction, ensuring that the radial feed mechanism 16 can drive the main beam slider mechanism 15 to move smoothly in the vertical direction.

[0122] In a specific embodiment, Fig.11 and Fig.12 As shown, the axial feed mechanism 14 includes an axial feed mounting frame 14-1, an axial feed block 14-2, an axial feed screw 14-3, an axial feed hand wheel 14-4, an axial feed protective cover 14-5, an axial feed driving wheel 14-6 and an axial feed driven wheel 14-7;

[0123] The axial feed mounting frame 14 - 1 is connected to the main beam slider mechanism 15 through a taper adjustment mechanism 17;

[0124] The axial feed block 14-2 is provided with a thread adapted to the axial feed screw 14-3, and the axial feed block 14-2 can reciprocate on the axial feed screw 14-3, and a grinder 19 is installed at the bottom of the axial feed block 14-2;

[0125] The axial feed screw 14-3 is horizontally arranged on the axial feed mounting frame 14-1, and the axial feed screw 14-3 is rotatably connected to the axial feed mounting frame 14-1;

[0126] One end of the axial feed handwheel 14-4 is rotatably connected to the axial feed mounting frame 14-1, the axial feed handwheel 14-4 is fixedly connected to the axial feed driving wheel 14-6, the end of the axial feed screw 14-3 close to the axial feed handwheel 14-4 is fixedly connected to the axial feed driven wheel 14-7, the axial feed driving wheel 14-6 is meshed with the axial feed driven wheel 14-7, the axial feed handwheel 14-4 can drive the axial feed driving wheel 14-6 to rotate, thereby driving the axial feed driven wheel 14-7 to rotate, and then the axial feed screw 14-3 rotates;

[0127] The axial feed shield 14-5 is as follows Fig.12 As shown, it is prevented that the axial feed driving wheel 14-6 and the axial feed driven wheel 14-7 are directly exposed to the outside.

[0128] In actual operation, the grinding frame is installed on the connecting shaft 20 through the connecting shaft mounting hole 18. The axial feeding mechanism 14 can rotate within a certain range relative to the main beam 13 through the taper adjustment mechanism 17. The bolts of the adjustment plates 17-2 on both sides are loosened to change the relative positions of the bolts in the oblong holes 17-2-1 in the oblong holes 17-2-1. The dial 17-1 is rotated to select the scale surface corresponding to the required tapered groove angle, and the axial feeding mechanism 14 is adjusted and positioned against the scale surface of the dial 17-1. After adjustment, the bolts in the oblong holes 17-2-1 are tightened to fix the adjustment plate 17-2 and the dial support 17-3, so that the angle of the axial feeding mechanism 14 relative to the main beam slider mechanism 15 changes. At this time, the axial feeding mechanism 14 is set on the main beam 13 at the required angle, so that the grinder 19 can grind at the required angle.

[0129] The slider threaded rod 15-3 is loosened so that the main beam slider mechanism 15 can move along the main beam 13. The radial feed mechanism 16 is connected to the slider threaded rod 15-3 through the main beam slider connecting frame 16-5. The radial feed handle 16-6 is turned to make the radial feed screw 16-3 drive the radial feed block 16-4 to move, thereby driving the main beam slider connecting frame 16-5 to move, so that the main beam slider mechanism 15 connected to the main beam slider connecting frame 16-5 drives the axial feed mechanism 14 to move in the vertical direction, so that the position of the grinder 19 relative to the pipe in the radial direction of the pipe is changed, that is, the radial cutting amount of the grinding equipment is adjusted. After the adjustment, the slider threaded rod 15-3 and the threaded hole provided in the main beam first slider 15-1 are tightened until the main beam slider mechanism 15 no longer moves along the main beam 13, and the radial feed mechanism 16 is fixedly connected to the main beam 13 with the required radial cutting amount;

[0130] Turn on the grinder 19, shake the axial feed hand wheel 14-4, make the grinder 19 axially feed, start grinding the pipe groove, after the axial feed reaches a certain depth, the construction personnel hold the grinding frame and rotate it around the connecting shaft 20, after grinding 180 degrees in the forward direction, straighten the grinding frame, and grind 180 degrees in the reverse direction to complete a single grinding; the grinding length of a single grinding in the axial direction of the pipe is at most the length of the grinding wheel 19-1. If the grinding length of the groove to be polished in the axial direction of the pipe is large, and a single grinding cannot complete the grinding of the entire groove, the aforementioned single grinding steps need to be repeated until the grinding of the entire groove of the pipe is completed;

[0131] After the grinding is completed, the grinding frame 2 is removed, and the tensioner is taken out to complete the entire disassembly work. A schematic diagram of a pipe groove grinding device after installation is shown in FIG. Figure 6 and Figure 7 shown.

[0132] In a specific embodiment, a protection mechanism is also included, the protection mechanism includes a movable baffle 21, a guide rail 22 and a dust suction device 23, the dust suction device 23 is as shown in FIG. Figure 7 As shown, the movable baffle 21 is as shown in Fig.10 As shown;

[0133] like Fig.11 and Fig.12 As shown, the movable baffle 21 includes a baffle 21-1 and a connecting plate 21-2, and the baffle 21-1 is fixed at both ends of the connecting plate 21-2. Fig.16 As shown, the connecting plate 21-2 is provided with a guide rail through hole 21-2-1 for the guide rail 22 to pass through, and the movable baffle 21 can slide along the guide rail 22 through the guide rail through hole 21-2-1, and the movable baffle 21 can reciprocate in the horizontal direction;

[0134] The guide rail 22 passes through the axial feeding mechanism 14, and the guide rail 22 is fixed on the axial feeding mechanism 14;

[0135] like Figure 8 As shown, the dust collection device 23 includes a dust collection funnel 23-1 and a dust collection pipe 23-2. The dust collection funnel 23-1 is fixed on the movable baffle 21. The mouth of the dust collection funnel 23-1 is arranged relative to the grinding wheel 19-1 of the grinder 19. The grinding wheel 19-1 needs to be fed along the axial direction of the pipe for multiple times during the grinding process. The dust collection funnel 23-1 slides along the guide rail 22 through the movable baffle 21 to adjust the position so as to correspond to the position of the grinding wheel 19-1. The dust collection pipe 23-2 is connected to the dust collection funnel 23-1, and the dust collection pipe 23-2 can be connected to an external vacuum cleaner.

[0136] There is a lot of dust when grinding the groove of the pipe, and the debris generated during grinding is easy to splash, making the working conditions of the construction workers very bad. The dust suction device 23 used in conjunction with the vacuum cleaner can effectively reduce the spread of dust, and the movable baffle 21 can prevent the debris from splashing, so that the working conditions of the construction workers are effectively improved.

[0137] In a specific embodiment, a control switch box 24 is also included, such as Figure 7 As shown, the control switch box 24 is fixed at the bottom of the grinding frame, and the control switch box 24 is used to control the opening and closing of the grinder 19.

[0138] In a specific embodiment, a handle 25 is also included. Figure 7 As shown, the handle 25 is fixed on the grinding frame, so that the construction workers can hold the grinding frame by hand for easy operation.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe groove grinding device, characterized in that: It includes a tensioner, a grinding device and a connecting shaft (20); The tensioner comprises a wedge block (1), a supporting device (2), a lead screw (3), a tensioning disc (4), and a driving mechanism capable of driving the lead screw (3) to rotate under the action of an external force; The wedge block (1) is mounted on the lead screw (3), the wedge block (1) is capable of reciprocating on the lead screw (3), the wedge block (1) is provided with a plurality of inclined surfaces (1-1), and the number of the inclined surfaces (1-1) is not less than the number of the supporting devices (2); At least three of the support devices (2) are fixedly connected between two tension disks (4), the angles between two adjacent support devices (2) are equal, and the support devices (2) are arranged in the radial direction of the tension disk (4); The supporting device (2) comprises a slider (2-1) and an abutment plate (2-4); the slider (2-1) is provided with a slider wedge (2-1-1) capable of sliding along the inclined surface (1-1); the slider wedge (2-1-1) abuts against the inclined surface (1-1); the slider (2-1) is fixedly connected to the abutment plate (2-4); and the abutment plate (2-4) can abut against the inner wall of the pipe material; The lead screw (3) is rotatably connected between two tensioning disks (4), and the axis of the lead screw (3) is located at the center of the tensioning disk (4); The grinding device comprises a grinding frame and a grinding machine (19), wherein the grinding frame is arranged on one side of the tensioner, the grinding frame is provided with a connecting shaft mounting hole (18), the connecting shaft mounting hole (18) is rotatably connected to one end of a connecting shaft (20), the other end of the connecting shaft (20) is fixedly connected to one side of the tensioner, and the grinding machine (19) is installed on the grinding frame, and the grinding machine (19) can reciprocate in the horizontal and vertical directions on the grinding frame; The supporting device (2) further comprises a movable rod (2-2), a fixed module (2-3) and a reset spring (2-5); the fixed module (2-3) is fixed between two tensioning disks (4); the movable rod (2-2) can reciprocate on the fixed module (2-3) along the radial direction of the tensioning disk (4); one end of the movable rod (2-2) close to the lead screw (3) is fixedly connected to the slider (2-1); the other end of the movable rod (2-2) is fixedly connected to the abutment plate (2-4); the reset spring (2-5) is arranged between the slider (2-1) and the fixed module (2-3); and the reset spring (2-5) is sleeved on the movable rod (2-2); It also includes a detachable supporting claw (12), the supporting claw (12) being fixedly connected to the abutting plate (2-4), and the supporting claw (12) being provided with an arc surface (12-1) capable of fitting against the inner wall of the pipe; The driving mechanism comprises a driving rod (5), a driving wheel (6) and a driven wheel (7); The driving rod (5) is rotatably connected between the two tensioning disks (4); the driving rod (5) is arranged between the angles of any two adjacent supporting devices (2); an input connector (5-1) is arranged at one end of the driving rod (5); the driving wheel (6) is fixed at the other end of the driving rod (5); the driven wheel (7) is fixed at one end of the lead screw (3); the driving wheel (6) is meshed with the driven wheel (7); and the input connector (5-1) can drive the driving rod (5) to rotate under the action of an external force; It also includes a locking mechanism, which includes a locking gear (8), a locking shaft (9), a locking idler wheel (10) and a locking bolt (11); The locking gear (8) is fixed to an end of the driving rod (5) away from the driving wheel (6); The locking shaft (9) is arranged on the tensioning disk (4) on the side away from the driving wheel (6), the locking shaft (9) passes through the tensioning disk (4) and is slidably connected with the tensioning disk (4), one end of the locking shaft (9) is provided with a locking shaft shoulder (9-1), and the locking shaft (9) is provided with a locking shaft threaded hole (9-2) adapted to the locking bolt (11); The locking idler wheel (10) is rotationally connected to the locking shaft (9), the locking idler wheel (10) is installed between the locking shaft shoulder (9-1) and the tensioning disk (4), and the locking idler wheel (10) is meshed with the locking gear (8).

2. A pipe groove grinding device according to claim 1, characterized in that: The grinding frame comprises a main beam (13), an axial feeding mechanism (14), a main beam slider mechanism (15), a radial feeding mechanism (16) and a taper adjustment mechanism (17); The main beam (13) is arranged on one side of the tensioning disk (4), and a connecting shaft mounting hole (18) is opened at the bottom end of the main beam (13). The connecting shaft mounting hole (18) is rotatably connected to one end of a connecting shaft (20), and the other end of the connecting shaft (20) is fixedly connected to one side of the tensioner; The axial feeding mechanism (14) passes through the main beam (13), the axial feeding mechanism (14) is fixedly connected to the grinder (19), and the axial feeding mechanism (14) can drive the grinder (19) to reciprocate in a horizontal direction; The main beam slider mechanism (15) is arranged on the top of the axial feed mechanism (14); the main beam slider mechanism (15) is connected to the axial feed mechanism (14) via a taper adjustment mechanism (17); the main beam slider mechanism (15) is connected to the radial feed mechanism (16); and the main beam slider mechanism (15) can slide along the main beam (13); The radial feeding mechanism (16) is arranged on the top of the main beam (13), and the radial feeding mechanism (16) can drive the main beam slider mechanism (15) to reciprocate in the vertical direction; The taper adjustment mechanism (17) is arranged between the axial feeding mechanism (14) and the main beam slider mechanism (15); The taper adjustment mechanism (17) comprises a dial (17-1), an adjustment plate (17-2), a dial support (17-3), an articulated support (17-4), an articulated rod (17-5), a dial shaft washer (17-6), a dial shaft bolt (17-7) and a dial shaft (17-8); The scale disk (17-1) is arranged between the scale disk rotating shaft gasket (17-6) and the scale disk support (17-3); a gap is left between the scale disk (17-1) and the scale disk rotating shaft gasket (17-6); the scale disk (17-1) is provided with a scale disk mounting hole (17-1-1); the scale disk (17-1) is a polygonal disc-shaped member; the spacings between each side of the polygon and the scale disk mounting hole (17-1-1) are different; and the scale disk (17-1) can be rotated on the scale disk rotating shaft (17-8) through the scale disk mounting hole (17-1-1); The two adjustment plates (17-2) are symmetrically fixed on the top of the axial feeding mechanism (14); the adjustment plates (17-2) are provided with oblong holes (17-2-1); and the scale plate (17-1) is arranged between the two adjustment plates (17-2); The scale plate support (17-3) is fixed to one end of the main beam slider mechanism (15) close to the adjustment plate (17-2), and the scale plate support (17-3) is connected to the adjustment plate (17-2) via a bolt passing through the oblong hole (17-2-1); The hinged support (17-4) is fixed to an end of the main beam slider mechanism (15) away from the adjustment plate (17-2); The hinged rod (17-5) is fixed on the top of the axial feeding mechanism (14), and the hinged rod (17-5) can be hinged to the hinged support (17-4); The scale disk rotating shaft bolt (17-7) sequentially penetrates the scale disk rotating shaft washer (17-6) and the scale disk rotating shaft (17-8), and the scale disk rotating shaft bolt (17-7) is connected to the main beam slider mechanism (15) via threads; The dial rotating shaft (17-8) is locked on the main beam slider mechanism (15) through a dial rotating shaft bolt (17-7); the dial rotating shaft (17-8) passes through the dial support (17-3); and one end of the dial rotating shaft (17-8) away from the dial rotating shaft gasket (17-6) abuts against the main beam slider mechanism (15).

3. A pipe groove grinding device according to claim 2, characterized in that: The main beam slider mechanism (15) comprises a first main beam slider (15-1), a second main beam slider (15-2), a slider threaded rod (15-3) and a positioning shaft (15-4); The first slider (15-1) of the main beam is arranged on a side of the main beam (13) close to the tensioner, and the second slider (15-2) of the main beam is arranged on a side of the main beam (13) far from the tensioner. The first slider (15-1) of the main beam is provided with a threaded hole for installing a slider threaded rod (15-3), and the second slider (15-2) of the main beam is provided with a through hole through which the slider threaded rod (15-3) can pass. The second slider (15-2) of the main beam can slide along the slider threaded rod (15-3). The first slider (15-1) of the main beam is connected to the second slider (15-2) of the main beam through the slider threaded rod (15-3), and the opposite surfaces of the first slider (15-1) of the main beam and the second slider (15-2) of the main beam abut against the main beam (13); The positioning shaft (15-4) is arranged between a first slider (15-1) of the main beam and a second slider (15-2) of the main beam, the positioning shaft (15-4) is provided with a positioning section (15-4-1) and a supporting section (15-4-2), the supporting section (15-4-2) is vertically fixed on the second slider (15-2) of the main beam, and the first slider (15-1) of the main beam is provided with a positioning hole (15-1-1) which is clearance-matched with the positioning section (15-4-1).

4. A pipe groove grinding device according to claim 2, characterized in that: The radial feeding mechanism (16) comprises a load plate (16-1), a screw support (16-2), a radial feeding screw (16-3), a radial feeding block (16-4), a main beam slider connecting frame (16-5) and a radial feeding handle (16-6); The load plate (16-1) is fixed on the top of the main beam (13), a screw support (16-2) is fixed on the bottom of the load plate (16-1), the screw support (16-2) is arranged inside the main beam (13), the screw support (16-2) is rotatably connected to the radial feed screw (16-3), the radial feed block (16-4) can reciprocate on the radial feed screw (16-3), and the radial feed block (16-4) is connected to the main beam slider. The radial feed screw (16-3) passes through the main beam slider connecting frame (16-5), the bottom of the main beam slider connecting frame (16-5) is connected to the main beam slider mechanism (15), and a radial feed handle (16-6) is provided on the top of the load plate (16-1), and the bottom end of the radial feed handle (16-6) passes through the load plate (16-1) and the screw support (16-2) and is fixedly connected to the top of the radial feed screw (16-3).

5. A pipe groove grinding device according to claim 2, characterized in that: The axial feeding mechanism (14) comprises an axial feeding mounting frame (14-1), an axial feeding block (14-2), an axial feeding screw (14-3) and an axial feeding hand wheel (14-4); The axial feed mounting frame (14-1) is connected to the main beam slider mechanism (15) via a taper adjustment mechanism (17); The axial feed block (14-2) is capable of reciprocating on the axial feed screw (14-3), and a grinder (19) is installed at the bottom of the axial feed block (14-2); The axial feed screw (14-3) is horizontally arranged on the axial feed mounting frame (14-1), and the axial feed screw (14-3) is rotatably connected to the axial feed mounting frame (14-1); The axial feed hand wheel (14-4) can drive the axial feed screw (14-3) to rotate.

6. A pipe groove grinding device according to claim 2, characterized in that: It also includes a protection mechanism, which includes a movable baffle (21), a guide rail (22) and a dust suction device (23); The movable baffle (21) can slide along the guide rail (22), and the movable baffle (21) can reciprocate in a horizontal direction; The guide rail (22) passes through the axial feeding mechanism (14), and the guide rail (22) is fixed on the axial feeding mechanism (14); The dust collection device (23) comprises a dust collection funnel (23-1) and a dust collection pipe (23-2); the dust collection funnel (23-1) is fixed on the movable baffle (21); the mouth of the dust collection funnel (23-1) is arranged relative to the grinding wheel (19-1) of the grinder (19); the dust collection pipe (23-2) is connected to the dust collection funnel (23-1); and the dust collection pipe (23-2) can be externally connected to a dust collector.

Images