Cutting device for metal pipe fitting

Abstract

The invention discloses a cutting device for a metal pipe fitting, and relates to the technical field of flue gas treatment, the cutting device comprises a U-shaped frame, a T-shaped rod is in threaded connection with the U-shaped frame, and a cutting knife is rotatably arranged at the lower end of the U-shaped frame; one end of the sliding frame is slidably connected with the U-shaped frame, and the upper end of the sliding frame is rotatably connected with the T-shaped rod; the first compression roller mechanism is rotationally arranged on one side in the sliding frame through a hinge rod, and a first arc-shaped bevel gear is arranged on the first compression roller mechanism; the second pressing roller mechanism is rotationally arranged on the first pressing roller mechanism in a sleeving mode, and a second arc-shaped bevel gear is arranged on the second pressing roller mechanism; the angle adjusting mechanism is rotationally arranged on the sliding frame, and a driving bevel gear is arranged at the end of the angle adjusting mechanism. The second compression roller mechanism is rotationally arranged on the first compression roller mechanism in a sleeving manner, and the first compression roller mechanism and the second compression roller mechanism are driven to synchronously and reversely move in a manner that a driving bevel gear on the angle adjusting mechanism is in meshing transmission with a first arc-shaped bevel gear and a second arc-shaped bevel gear; and the distance between the compression roller I and the compression roller II is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of pipe cutting, in particular to a metal pipe cutting device. Background Art

[0002] Cutting equipment is required in the metal pipe cutting process. The equipment used for metal pipe cutting is mainly divided into three types: automatic cutting, semi-automatic cutting and manual cutting. Among them, manual cutting is mainly because it is easy to carry, suitable for on-site operation, and convenient for cutting during pipeline installation. The existing manual pipe cutting equipment mainly relies on rotating the "T"-shaped rod to make the pressure roller press the metal pipe, relying on the equipment to rotate on the metal pipe, and rotating the alloy steel blade to perform ring cutting on the metal pipe. However, the pressure roller spacing on the existing manual pipe cutting equipment cannot be adjusted, which makes it less adaptable to metal pipes of different diameters. Therefore, the present application proposes a metal pipe cutting device with adjustable pressure roller spacing. Summary of the Invention

[0003] The present invention provides a metal pipe cutting device, which aims to solve the problem that the manual pipe cutting equipment cannot adjust the spacing between the pressure rollers.

[0004] To achieve the above-mentioned object, the present invention provides a metal pipe cutting device, comprising:

[0005] A "U"-shaped frame with a "T"-shaped rod threaded onto it;

[0006] The cutting knife is rotatably mounted at the lower end of the "U"-shaped frame;

[0007] A sliding frame, one end of which is slidably connected to the "U"-shaped frame, and the upper end of which is rotatably connected to the "T"-shaped rod;

[0008] The first pressing roller mechanism is rotatably arranged on one side of the sliding frame through a hinge rod, and a first arc-shaped bevel gear is arranged on the first pressing roller mechanism;

[0009] The second pressing roller mechanism is rotatably sleeved on the first pressing roller mechanism and is provided with a second arc-shaped bevel gear;

[0010] The angle adjustment mechanism is rotatably arranged on the sliding frame, and an active bevel gear is provided at its end; the two sides of the active bevel gear are respectively connected to the first arc bevel gear and the second arc bevel gear to drive the first pressing roller mechanism and the second pressing roller mechanism to rotate synchronously in opposite directions to adjust their angle.

[0011] Preferably, the first pressure roller comprises a pressure roller 1, a rotating plate 1, and a connecting tube. Pressure roller 1 is rotatably connected to one end of rotating plate 1, and the other end of rotating plate 1 is connected via a connecting tube. The first arc-shaped bevel gear is connected to the connecting tube. A circular hole is provided at the end of rotating plate 1, and a groove is provided within the circular hole. The groove is circumferentially provided with multiple threaded holes 1. One end of the connecting tube is provided with a flange surface, which is connected to the multiple threaded holes 1 in the groove via bolts. The other end of the connecting tube is provided with multiple threaded holes 2. The other end of the connecting tube is connected to the circular plate via bolts, and the circular plate is connected to the multiple threaded holes 1 in the other groove via bolts.

[0012] Preferably, the second pressing roller mechanism includes pressing roller 2, rotating plate 2 and connecting plate. Pressing roller 2 is rotatably connected to one end of rotating plate 2, and the other end of rotating plate 2 is connected through the connecting plate; a ring is provided at the two ends of the rotating plate, and the ring is rotatably sleeved on the connecting tube; the second arc bevel gear is connected to one of the rings.

[0013] Arc through holes are provided on both sides of the sliding frame, and limited circular blocks are provided on the rotating plate 1 and the rotating plate 2, and the limited circular blocks are located in the arc through holes; the center of the arc through hole coincides with the center of the hinge rod.

[0014] Preferably, the angle adjustment mechanism also includes a telescopically slidable rotating rod, a knob and a locking assembly. The rotating rod is rotatably arranged in an inclined tube on the sliding frame, the knob is fixed at one end of the rotating rod, and the active bevel gear is fixed at the other end of the rotating rod; the rotating rod is rotationally locked with the sliding frame through the locking assembly.

[0015] The locking assembly includes a spring arranged in the inclined tube and a plurality of plug-in protrusions arranged circumferentially on the end face of the knob. The end face of the inclined tube is provided with a plurality of slots plugged with the plug-in protrusions, and one end of the spring is fixedly connected to the end face of the knob.

[0016] The rotating rod includes a rotating rod 1 and a rotating rod 2. One end of the rotating rod 1 is coaxially connected to the active bevel gear, and the other end of the rotating rod 1 is provided with a socket, and strip-shaped through holes are provided on both sides of the socket; one end of the rotating rod 2 is coaxially connected to the knob, and the other end of the rotating rod 2 is provided with an insertion rod that is slidably inserted into the socket, and a pin is provided on the insertion rod, and the pin is located in the strip-shaped through hole.

[0017] Preferably, the U-shaped frame includes an L-shaped frame and a mounting frame for mounting a cutting knife. A rotating block is provided at the end of the T-shaped rod, and a connecting rotating sleeve is provided at the upper end of the sliding frame, and the rotating block rotates in the connecting rotating sleeve.

[0018] Compared with the existing technology, it has the following beneficial effects:

[0019] The present application drives the first and second pressing roller mechanisms to move in opposite directions synchronously by rotating the second pressing roller mechanism onto the first pressing roller mechanism, and relying on the active bevel gear on the angle adjustment mechanism to engage with the first arc bevel gear and the second arc bevel gear for transmission, so as to adjust the angle between the first pressing roller and the second pressing roller, thereby adjusting the spacing between the first pressing roller and the second pressing roller to adapt to the rolling and pressing of metal pipes of different diameters, thereby effectively improving the applicability of the metal pipe cutting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 Schematic diagram of a metal pipe cutting device for this application Figure 1 ;

[0022] Figure 2 Schematic diagram of a metal pipe cutting device for this application Figure 2 ;

[0023] Figure 3 Schematic diagram of a metal pipe cutting device for this application Figure 3 ;

[0024] Figure 4 Schematic diagram of the first pressing roller mechanism and the second pressing roller mechanism of this application;

[0025] Figure 5 This is a schematic diagram of the angle adjustment mechanism of this application;

[0026] Figure 6 This is a schematic diagram of the first pressing roller mechanism of this application Figure 1 ;

[0027] Figure 7 This is a schematic diagram of the first pressing roller mechanism of this application Figure 2 ;

[0028] Figure 8 This is a schematic diagram of the first pressing roller mechanism of this application Figure 3 ;

[0029] Figure 9 This is a schematic diagram of the first pressing roller mechanism of this application Figure 4 ;

[0030] Figure 10 This is a schematic diagram of the second pressing roller mechanism of this application Figure 1 ;

[0031] Figure 11 This is a schematic diagram of the first pressing roller mechanism of this application Figure 2 ;

[0032] Figure 12 This is a schematic diagram of the first pressing roller mechanism of this application Figure 3 ;

[0033] Figure 13 A schematic diagram of the sliding frame for this application;

[0034] Figure 14 for Figure 13 A in the middle is an enlarged schematic diagram;

[0035] Figure 15 Schematic diagram of the hinged rod for this application.

[0036] Figure markings: 1-"U"-shaped frame; 11-"T"-shaped rod; 2-cutting knife; 3-sliding frame; 31-oblique tube; 311-slot; 32-arc-shaped through hole; 33-connecting sleeve; 4-first pressing roller mechanism; 41-pressing roller one; 42-rotating plate one; 43-connecting tube; 5-second pressing roller mechanism; 51-pressing roller two; 52-rotating plate two; 53-connecting plate; 54-ring; 6-first arc-shaped bevel gear; 7-second arc-shaped bevel gear; 8-angle adjustment mechanism; 81-active bevel gear; 82-rotating rod; 821-rotating rod one; 8211-bar-shaped through hole; 822-rotating rod two; 8221-latch; 83-knob; 841-spring; 842-plug-in protrusion; 9-hinge rod; 10-limiting circle. DETAILED DESCRIPTION

[0037] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0038] Example:

[0039] like Figures 1 to 13 As shown, the present invention provides a metal pipe cutting device, comprising:

[0040] A "U"-shaped frame 1 is threadedly connected to a "T"-shaped rod 11, so that the "T"-shaped rod 11 can be rotated by a turning handle of the "T"-shaped rod 11 to make it move up and down on the "U"-shaped frame 1;

[0041] The cutting blade 2 is rotatably mounted at the lower end of the U-shaped frame 1. The cutting blade 2 of the present invention is made of alloy steel to facilitate ring cutting of the metal pipe.

[0042] The sliding frame 3 has one end that is slidably connected to the "U"-shaped frame 1, and its upper end is rotatably connected to the "T"-shaped rod 11. The sliding frame 3 is driven to move up and down within the "U"-shaped frame 1 by rotating the "T"-shaped rod 11. Furthermore, a steel plate for limiting the position is provided on one side of the "U"-shaped frame 1, and one side of the sliding frame 3 slides on the steel plate.

[0043] The first pressing roller mechanism 4 is rotatably mounted on one side of the sliding frame 3 via a hinged rod 9, and a first arc-shaped bevel gear 6 is mounted on the first pressing roller mechanism 4;

[0044] The second pressing roller mechanism 5 is rotatably sleeved on the first pressing roller mechanism 4 and is provided with a second arc-shaped bevel gear 7;

[0045] The angle adjustment mechanism 8 is rotatably arranged on the sliding frame 3, and an active bevel gear 81 is provided at its end; the two sides of the active bevel gear 81 are respectively connected to the first arc bevel gear 6 and the second arc bevel gear 7 to drive the first pressing roller mechanism 4 and the second pressing roller mechanism 5 to rotate synchronously in opposite directions to adjust their angles, so as to adjust the spacing between the pressing roller 1 41 and the pressing roller 2 51 to adapt to the rolling and pressing of metal pipes of different diameters, thereby effectively improving the applicability of the metal pipe cutting device.

[0046] Furthermore, the curvature of the first arc-shaped bevel gear 6 of the present invention is smaller than the curvature of the second arc-shaped bevel gear 7 .

[0047] See also Figures 1 to 9 The first pressure roller of the present invention includes a pressure roller 41, a rotating plate 42, and a connecting tube 43. The pressure roller 41 is rotatably connected to one end of the rotating plate 42, and the other end of the rotating plate 42 is connected via the connecting tube 43. The first arc-shaped bevel gear 6 is connected to the connecting tube 43 and meshes with one side of the active bevel gear 81, so that the active bevel gear 81 can drive the pressure roller 41 to rotate via the rotating rod 82. The end of the rotating plate 42 is provided with a circular hole, and a groove is provided in the circular hole. The groove is provided with multiple threaded holes 1 along the circumference. One end of the connecting tube 43 is provided with a flange surface, and the flange surface is connected to the multiple threaded holes 1 in the groove by bolts. The other end face of the connecting tube 43 is provided with multiple threaded holes 2. The other end of the connecting tube 43 is connected to the circular plate by bolts, and the circular plate is connected to the multiple threaded holes 1 in the other groove by bolts, so that the connecting tube 43 connects the two rotating plates 42 together.

[0048] See also Figures 10 to 12 The second pressing roller mechanism 5 of the present invention includes a second pressing roller 51, a second rotating plate 52 and a connecting plate 53. The second pressing roller 51 is rotatably connected to one end of the second rotating plate 52, and the other end of the second rotating plate 52 is connected through the connecting plate 53; a ring 54 is provided at the end of the second rotating plate 52, and the ring 54 is rotatably sleeved on the connecting pipe 43; the second arc bevel gear 7 is connected to its ring 54 and meshes with one side of the active bevel gear 81.

[0049] See also Figure 4 and Figure 13 In the present invention, arc-shaped through holes 32 are provided on both sides of the sliding frame 3, and limiting circular blocks 10 are provided on the rotating plate 1 42 and the rotating plate 2 52, and the limiting circular blocks 10 are located in the arc-shaped through holes 32; the center of the arc-shaped through hole 32 coincides with the center of the hinge rod 9, so as to limit the rotating plate 1 42 and the rotating plate 2 52.

[0050] As another embodiment of the present application, Figure 4 and Figure 5 As shown, the angle adjustment mechanism 8 of the present invention also includes a retractable and slidable rotating rod 82, a knob 83 and a locking assembly. The rotating rod 82 is rotatably arranged in the oblique tube 31 on the sliding frame 3, the knob 83 is fixedly arranged at one end of the rotating rod 821, and the active bevel gear 81 is fixedly arranged at the other end of the rotating rod 82; the rotating rod 82 is rotationally locked with the sliding frame 3 through the locking assembly.

[0051] See also Figure 4 and Figure 5 The locking assembly of the present invention includes a spring 841 arranged in the inclined tube 31 and a plurality of plug-in protrusions 842 arranged circumferentially on the end face of the knob 83. The end face of the inclined tube 31 is provided with a plurality of slots 311 plugged with the plug-in protrusions 842, and one end of the spring 841 is fixedly connected to the end face of the knob 83.

[0052] See also Figure 4 and Figure 5 The rotating rod 82 of the present invention includes a rotating rod 1 821 and a rotating rod 2 822. One end of the rotating rod 1 821 is coaxially connected to the active bevel gear 81, and the other end of the rotating rod 1 821 is provided with a socket, and bar-shaped through holes 8211 are provided on both sides of the socket; one end of the rotating rod 2 822 is coaxially connected to the knob 83, and the other end of the rotating rod 2 822 is provided with an insertion rod that is slidably inserted into the socket, and a pin 8221 is provided on the insertion rod, and the pin 8221 is located in the bar-shaped through hole 8211. The second rotating rod 822 slides on the first rotating rod 821 through the insertion rod, so that the insertion protrusion 842 on the end face of the knob 83 disengages the slot 311 on the inclined tube 31, thereby realizing the rotation unlocking of the second rotating rod 822; at this time, the knob 83 is used to make the second rotating rod 822 drive the first rotating rod 821 to rotate, thereby synchronously driving the active bevel gear 81 at the end of the first rotating rod 821 to rotate, so that the first arc bevel gear 6 and the second arc bevel gear 7 engaged on both sides of the active bevel gear 81 rotate synchronously in the opposite directions, thereby making the pressure roller 1 41 and the pressure roller 2 51 swing relative to each other to adjust their angle and spacing.

[0053] As another embodiment of the present application, Figure 1As shown, the U-shaped frame 1 of the present invention includes an L-shaped frame and a mounting frame for mounting a cutting blade 2. This embodiment provides a detachable mounting frame so that the mounting frame can be easily disassembled to replace the cutting blade 2 with a different diameter, thereby being suitable for cutting metal pipes of different diameters.

[0054] See also Figure 13 In the present invention, a rotating block is provided at the end of the "T"-shaped rod 11, and a connecting rotating sleeve 33 is provided at the upper end of the sliding frame 3. The rotating block rotates inside the connecting rotating sleeve 33, so that the "T"-shaped rod 11 can rotate on the sliding frame 3. Relying on the threaded connection between the "T"-shaped rod 11 and the "U"-shaped frame 1, the sliding frame 3 is driven to perform lifting movements in the "U"-shaped frame 1.

[0055] The working principle of the present application is as follows: when in use, the knob 83 is pulled along the axial direction of the inclined tube 31 to disengage the plug-in protrusion 842 on the end surface of the inclined tube 31 from the slot 311 on the end surface of the inclined tube 31, so as to realize the rotation unlocking of the rotating rod 82; at this time, the knob 83 is turned to make the active bevel gear 81 drive the first arc bevel gear 6 and the second arc bevel gear 7 to rotate, thereby controlling the connecting tube 43 connected to the first arc bevel gear 6 and the collar 54 connected to the second arc bevel gear 7 to rotate synchronously in the opposite direction, so as to drive the rotating plate 1 42 and the rotating plate The second 52 rotates synchronously in the opposite direction to achieve synchronous opposite swinging of the pressure roller 1 41 on the rotating plate 1 42 and the pressure roller 2 51 on the rotating plate 2 52, so as to adjust the distance between the pressure roller 1 41 and the pressure roller 2 51 to adapt to the diameter of the metal pipe to be cut; loosen the knob 83, so that the knob 83 contracts under the action of the spring 841, driving the plug-in protrusion 842 on the knob 83 to plug into the slot 311 on the inclined tube 31, so as to constrain the rotation of the rotating rod 82 and realize locking of the pressure roller 1 41 and the pressure roller 2 51 after the angle is adjusted.

[0056] Rotate the T-bar 11 to push the carriage 3, which drives the first and second rollers 41 and 51 to roll against the outer surface of the metal tube. The cutter 2 then contacts the tube surface, and the T-bar 11 causes the cutting device to rotate in a circular motion around the metal tube, causing the cutter 2 to cut the outer wall of the tube. After one rotation, rotate the T-bar 11 again to push the carriage 3, which drives the first and second rollers 41 and 51 to adjust the distance between them and the cutter 2, thereby adjusting the cutting depth until the tube is severed.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, use the above technical content to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the present technical solution.

Claims

1. A metal pipe cutting device, characterized in that: include: A "U"-shaped frame (1) with a "T"-shaped rod (11) threadedly connected thereto; A cutting knife (2) is rotatably arranged at the lower end of the "U"-shaped frame (1); A sliding frame (3), one end of which is slidably connected to the "U"-shaped frame (1), and the upper end of which is rotatably connected to the "T"-shaped rod (11); A first pressing roller mechanism (4) is rotatably arranged on one side of the sliding frame (3) via a hinged rod (9), and a first arc-shaped bevel gear (6) is arranged on the first pressing roller mechanism (4); a second pressing roller mechanism (5) rotatably sleeved on the first pressing roller mechanism (4) and provided with a second arc-shaped bevel gear (7); An angle adjustment mechanism (8) is rotatably mounted on the sliding frame (3), and an active bevel gear (81) is provided at its end; both sides of the active bevel gear (81) are respectively connected to the first arc-shaped bevel gear (6) and the second arc-shaped bevel gear (7) for driving the first pressing roller mechanism (4) and the second pressing roller mechanism (5) to rotate synchronously in opposite directions to adjust their included angle.

2. The metal pipe cutting device according to claim 1, characterized in that: The first pressing roller comprises a pressing roller (41), a rotating plate (42) and a connecting pipe (43); the pressing roller (41) is rotatably connected to one end of the rotating plate (42); the other end of the rotating plate (42) is connected via the connecting pipe (43); the first arc bevel gear (6) is connected to the connecting pipe (43).

3. The metal pipe cutting device according to claim 2, characterized in that: The second pressing roller mechanism (5) comprises a second pressing roller (51), a second rotating plate (52) and a connecting plate (53); the second pressing roller (51) is rotatably connected to one end of the second rotating plate (52), and the other end of the second rotating plate (52) is connected via the connecting plate (53); a sleeve ring (54) is provided at the end of the second rotating plate (52), and the sleeve ring (54) is rotatably sleeved on the connecting pipe (43); the second arc bevel gear (7) is connected to one of the sleeve rings (54).

4. The metal pipe cutting device according to claim 1 or 3, characterized in that: The angle adjustment mechanism (8) further comprises a telescopically slidable rotating rod (82), a knob (83) and a locking assembly. The rotating rod (82) is rotatably arranged in an oblique tube (31) on the sliding frame (3). The knob (83) is fixedly arranged at one end (821) of the rotating rod. The active bevel gear (81) is fixedly arranged at the other end of the rotating rod (82). The rotating rod (82) is rotatably locked with the sliding frame (3) through the locking assembly.

5. The metal pipe cutting device according to claim 4, characterized in that: The locking assembly comprises a spring (841) arranged in the inclined tube (31) and a plurality of plug-in protrusions (842) arranged circumferentially on the end face of the knob (83); a plurality of slots (311) plugged into the plug-in protrusions (842) are provided on the end face of the inclined tube (31); one end of the spring (841) is fixedly connected to the end face of the knob (83).

6. The metal pipe cutting device according to claim 5, characterized in that: The rotating rod (82) includes a rotating rod 1 (821) and a rotating rod 2 (822), one end of the rotating rod 1 (821) is coaxially connected to the active bevel gear (81), the other end of the rotating rod 1 (821) is provided with a socket, and both sides of the socket are provided with bar-shaped through holes (8211); one end of the rotating rod 2 (822) is coaxially connected to the knob (83), the other end of the rotating rod 2 (822) is provided with an insertion rod that is slidably plugged into the socket, and a pin (8221) is provided on the insertion rod, and the pin (8221) is located in the bar-shaped through hole (8211).

7. The metal pipe cutting device according to claim 3, characterized in that: Arc-shaped through holes (32) are provided on both sides of the sliding frame (3); and limited circular blocks (10) are provided on the rotating plate 1 (42) and the rotating plate 2 (52), and the limited circular blocks (10) are located in the arc-shaped through holes (32); the center of the arc-shaped through holes (32) coincides with the center of the hinge rod (9).

8. The metal pipe cutting device according to claim 2, characterized in that: The end of the rotating plate (42) is provided with a circular hole, a groove is provided in the circular hole, and a plurality of threaded holes (I) are provided on the groove along the circumferential direction; one end of the connecting pipe (43) is provided with a flange surface, and the flange surface is connected to the plurality of threaded holes (I) in the groove through bolts; the other end surface of the connecting pipe (43) is provided with a plurality of threaded holes (II), and the other end of the connecting pipe (43) is connected to the circular plate through bolts, and the circular plate is connected to the plurality of threaded holes (I) in the other groove through bolts.

9. The metal pipe cutting device according to claim 1, characterized in that: The "U"-shaped frame (1) comprises an "L"-shaped frame and a mounting frame for mounting a cutting knife (2).

10. The metal pipe cutting device according to claim 1, characterized in that: A rotating block is provided at the end of the T-shaped rod (11), and a connecting rotating sleeve (33) is provided at the upper end of the sliding frame (3). The rotating block is rotatably located in the connecting rotating sleeve (33).

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