CN214517880U

CN214517880U - High-efficiency electric pipe cutter

Info

Publication number: CN214517880U
Application number: CN202120865834.4U
Authority: CN
Inventors: 戴怿肖; 金建红; 汪昊; 王伟强; 孙赵杰
Original assignee: Shanghai First Construction Installation Engineering Co ltd
Current assignee: Shanghai First Construction Installation Engineering Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2021-10-29
Anticipated expiration: 2031-04-24

Abstract

The application relates to a high-efficiency electric pipe cutter, which relates to the technical field of pipeline cutting and comprises a machine body, an auxiliary mechanism for supporting a pipeline and a connecting mechanism for connecting the auxiliary mechanism to the machine body, wherein the auxiliary mechanism comprises a supporting seat arranged on one side of the machine body, a movable seat is arranged on the upper surface of the supporting seat, a lifting assembly for lifting the movable seat is arranged on the supporting seat, two auxiliary wheels for supporting the pipeline are rotatably connected to the upper surface of the movable seat, and the two auxiliary wheels are symmetrically arranged on two sides of the pipeline; coupling mechanism includes sleeve pipe and inserted bar, and the sheathed tube one end can be dismantled and connect in the lateral wall of organism, and the inserted bar slides in the cover intraductal along the horizontal direction near the one end of organism, and the one end rigid coupling that the organism was kept away from to the inserted bar is close to the lateral wall of organism in the supporting seat, and coupling mechanism still carries out spacing subassembly to the inserted bar including being used for. This application has and to support the pipeline fast to save pipeline installation time's effect.

Description

High-efficiency electric pipe cutter

Technical Field

The application relates to the technical field of pipeline cutting, in particular to a high-efficiency electric pipe cutter.

Background

At present, the steel pipe cutting machine is widely applied to industries such as petroleum, chemical industry, electric power, natural gas, metallurgy, shipbuilding, boilers, pharmacy, water treatment and the like, and projects such as pipeline installation, pipeline maintenance and the like of new projects. The material suitable for processing comprises: cast iron, cast steel, structural steel, tool steel, bearing steel, stainless steel, copper alloy, aluminum alloy, plastic, and the like. The steel tube cutting machine has the advantages of small volume and light weight, thereby being convenient to carry.

The related art can refer to chinese patent invention with an authorization publication No. CN102574224A, which discloses a pipe cutting machine, comprising a disassembly and assembly type cutting machine main body and a pair of left and right support plates assembled by a connection rod with external threads and a connection nut (a), wherein a fixing plate is formed at the lower end of the outer side of the pair of support plates, and a fixing hole is vertically formed on the fixing plate; a pipe mounting bracket in which a ball bearing is disposed, the ball bearing being located on an upper surface of a cutting plate at a front side of a cutter main body, a groove being provided on the upper surface of the cutting plate, a surface of the ball bearing protruding higher than an upper end surface of the groove; the rotary knife mounting frame is positioned right above the cutting plate, and the supporting shaft arranged along the horizontal direction is hinged with the supporting part; a rotary knife rotating shaft, wherein a bearing (b) is inserted into a front end shaft hole (a) of the rotary knife mounting frame, a shaft lever with a spline is mounted, and a connecting pipe is formed at the outer side end of the shaft lever; a driving motor, wherein a motor supporting plate is arranged on the left side plate of the rotary knife mounting frame, a motor with a speed reducer is mounted on the motor supporting plate, and a motor rotating shaft rotating at a speed reduced speed is fixedly connected to the rotary knife rotating shaft; the rotary cutter is characterized in that a circular blade is arranged between a left support plate and a right support plate and connected through a connecting piece, and a combination hole for inserting a rotary shaft of the rotary cutter is formed in the left support plate and the right support plate; a hydraulic operation device, wherein a support shaft is arranged at the rear tail side of the rotary knife installation frame along the horizontal direction, a connecting pipe is inserted into the outer surface of the support shaft, so that the upper end part of a second piston (a) of a manual hydraulic jack arranged at the rear tail part of the cutting machine main body is connected to the lower end connection part of the connecting pipe, and an operation handle is inserted into an operation part (b) of the hydraulic jack; the pipe auxiliary bottom plate is formed by extending a support rod at the center of a support plate installed at the outer side of the pipe installation frame, the lower part of the support rod is a screw part, the upper end of the screw part is provided with a longitudinal guide groove, after a nut is inserted into the screw part, a connecting pipe of a V-shaped groove frame is inserted into the support rod, a fixing bolt is combined with a screw in a screw hole penetrating the peripheral wall of the connecting pipe to enable the end part of the fixing bolt to contact with the longitudinal groove, and a ball bearing is arranged on the end surface of the V-shaped groove frame.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: because the length of the pipeline to be cut is different, when the pipeline needs to be cut, an operator needs to place a V-shaped groove frame on one side of the machine body to support the pipeline, but before the pipeline to be cut is installed, the V-shaped groove frame needs to be aligned with the groove on the machine body, and the V-shaped groove frame needs to be moved according to the length of the pipeline, so that the distance between the V-shaped groove frame and the machine body is changed, after the V-shaped groove frame is moved, the V-shaped groove frame needs to be aligned with the groove on the machine body again, and the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to support the pipeline fast, the application provides an electronic pipe cutter of high efficiency.

The application provides an electronic pipe cutter of high efficiency adopts following technical scheme:

a high-efficiency electric pipe cutter comprises a machine body, an auxiliary mechanism for supporting a pipeline and a connecting mechanism for connecting the auxiliary mechanism to the machine body, wherein the auxiliary mechanism comprises a supporting seat arranged on one side of the machine body, a movable seat is arranged on the upper surface of the supporting seat, a lifting assembly for lifting the movable seat is arranged on the supporting seat, two auxiliary wheels for supporting the pipeline are rotatably connected to the upper surface of the movable seat, and the two auxiliary wheels are symmetrically arranged on two sides of the pipeline; coupling mechanism includes sleeve pipe and inserted bar, the lateral wall of connecting in the organism can be dismantled to sheathed tube one end, the inserted bar slides in the cover intraductal along the horizontal direction near the one end of organism, the one end rigid coupling that the organism was kept away from to the inserted bar is close to the lateral wall of organism in the supporting seat, coupling mechanism still carries out spacing subassembly including being used for the inserted bar.

By adopting the technical scheme, before the pipeline is cut, an operator can align the auxiliary wheel of the movable seat with the ball bearing of the machine body in the length direction of the pipeline, and then fix one end, close to the machine body, of the sleeve on the side wall of the machine body; when the distance between auxiliary mechanism and the organism is adjusted according to the pipeline of different length to needs, operating personnel can follow the length direction removal auxiliary mechanism of pipeline to change the distance between auxiliary mechanism and the organism, because link together through sleeve pipe and inserted bar always between organism and the auxiliary mechanism, when operating personnel removed auxiliary mechanism, organism and auxiliary mechanism are difficult to take place the dislocation on the length direction of pipeline, thereby saved the step that needs align auxiliary mechanism and organism, so that support the pipeline fast.

Preferably, elevating module includes that the level sets up and rotates the axis of rotation of connecting in the supporting seat, the one end rigid coupling that the axis of rotation extends to the supporting seat outside has the hand wheel, the worm that is fixed with two intervals settings is established to the lateral wall cover of axis of rotation, the upper surface of supporting seat rotates the dwang that is connected with two vertical settings, two the dwang interval sets up, every one pot head that the dwang extends to in the supporting seat is established and is fixed with the worm wheel, the worm wheel meshes with the worm mutually, every one end threaded connection that the dwang extends to the supporting seat top is in the sliding seat, just be provided with the direction subassembly that is used for restricting the sliding seat along vertical lift between supporting seat and the sliding seat.

Through adopting above-mentioned technical scheme, when the height of sliding seat is adjusted to needs, operating personnel rotates the hand wheel drive axis of rotation and rotates, and two worms of axis of rotation drive rotate simultaneously, thereby two worms rotate simultaneously and drive two worm wheels and rotate simultaneously and drive two dwangs and rotate simultaneously, thereby the sliding seat is along vertical lift under two dwangs and guide assembly's combined action to be convenient for drive sliding seat along vertical lift.

Preferably, the upper surface of supporting seat is seted up two slots that the interval set up, the direction subassembly includes two guide bars of rigid coupling in the sliding seat lower surface, the lower extreme one-to-one of guide bar is pegged graft in the slot of supporting seat, and the lower extreme of guide bar slides in the slot of supporting seat along vertical.

By adopting the technical scheme, the slot of the supporting seat has a guiding function on the guide rod, so that the probability of deviation of the movable seat in the lifting process is reduced; simultaneously, two dwangs can carry out spacingly to the sliding seat on the horizontal direction to when having reduced the dwang and having rotated, the sliding seat also takes place pivoted probability in the horizontal direction.

Preferably, a limiting groove is formed in the supporting seat under each slot, the limiting groove of the supporting seat is communicated with the slots, and each limiting block is fixedly connected to the bottom end of each guide rod and slides in the limiting groove of the supporting seat along the vertical direction.

Through adopting above-mentioned technical scheme, the spacing groove of supporting seat can be spacing the stopper in the supporting seat to reduced the movable block at the in-process that rises, the probability that guide bar and supporting seat take place to separate.

Preferably, every the week lateral wall of stopper all rotates and is connected with the ball, every the lateral wall butt of the lateral wall of ball and the spacing groove of supporting seat just can take place relative roll.

Through adopting above-mentioned technical scheme, the setting up of ball has alleviateed the rigidity contact between stopper and the supporting seat to the stopper of being convenient for slides at the spacing inslot of supporting seat.

Preferably, the upper surface of inserted bar is provided with a plurality of tight grooves of supporting along the length direction interval of inserted bar, the through-hole along vertical extension is seted up to sheathed tube upper surface, spacing subassembly includes rigid coupling in the support frame of sleeve pipe upper surface, the lower surface rigid coupling of support frame has the tight spring of supporting of vertical setting, the lower extreme rigid coupling of supporting the tight spring has the tight piece of supporting of vertical setting, the bottom of supporting the tight piece can pass the tight groove grafting cooperation of supporting of sheathed tube through-hole and inserted bar.

By adopting the technical scheme, when the supporting seat needs to be moved, an operator can lift the abutting block in the direction away from the inserted rod to separate the abutting block from the abutting groove of the inserted rod, so that the supporting seat can be moved, and the abutting spring is in a compressed state at the moment; when the supporting seat moves to a proper position, an operator loosens the abutting block, the abutting block automatically moves downwards under the action of the abutting spring until the bottom end of the abutting block penetrates through the through hole of the sleeve to be inserted into the abutting groove of the inserting rod, and therefore the inserting rod is limited, and the supporting seat is limited.

Preferably, the bottom end of the abutting block is semi-spherical, the abutting groove is semi-spherical, and the semi-spherical end of the abutting block cannot be completely inserted into the abutting groove of the insertion rod.

By adopting the technical scheme, the bottom end of the abutting block is arranged to be hemispherical and matched with the hemispherical abutting groove, so that when the inserted bar moves in the sleeve, the bottom end of the abutting block can move between the upper surface of the inserted bar and the abutting groove; when operating personnel removed the supporting seat to suitable position, when the bottom of the tight piece that supports was pegged graft in the spacing inslot to be convenient for carry on spacingly to the inserted bar, and then be convenient for carry on spacingly to the supporting seat.

Preferably, a rubber ring is fixedly sleeved on the side wall of each auxiliary wheel.

Through adopting above-mentioned technical scheme, the rigid contact between auxiliary wheel and the pipeline has been alleviateed in the setting of rubber ring to the probability that the pipeline was scratched by the auxiliary wheel has been reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. before cutting the pipeline, an operator can align the auxiliary wheel of the movable seat with the ball bearing of the machine body in the length direction of the pipeline, and then fix one end, close to the machine body, of the sleeve on the side wall of the machine body; when the distance between the auxiliary mechanism and the machine body needs to be adjusted according to pipelines with different lengths, an operator can move the auxiliary mechanism along the length direction of the pipeline, so that the distance between the auxiliary mechanism and the machine body is changed;

2. the slot of the supporting seat has a guiding function on the guide rod, so that the probability of deviation of the movable seat in the lifting process is reduced; meanwhile, the two rotating rods can limit the movable seat in the horizontal direction, so that the probability that the movable seat rotates in the horizontal direction when the rotating rods rotate is reduced;

3. the bottom end of the abutting block is arranged to be hemispherical and matched with the hemispherical abutting groove, so that when the inserted bar moves in the sleeve, the bottom end of the abutting block can move between the upper surface of the inserted bar and the abutting groove; when operating personnel removed the supporting seat to suitable position, when the bottom of the tight piece that supports was pegged graft in the spacing inslot to be convenient for carry on spacingly to the inserted bar, and then be convenient for carry on spacingly to the supporting seat.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 2 is a partial cross-sectional view of the sleeve and plunger of an embodiment of the present application to highlight the structural schematic of the stop assembly.

Fig. 3 is a partial sectional view of the supporting base and the movable base in the embodiment of the present application, which is used for highlighting the structural schematic diagram of the lifting assembly.

Fig. 4 is a partial cross-sectional view of a support base in an embodiment of the present application to highlight the structural schematic of the guide assembly.

Description of reference numerals: 1. a body; 2. an auxiliary mechanism; 21. a supporting seat; 211. a slot; 212. a limiting groove; 213. a working chamber; 22. a movable seat; 23. an auxiliary wheel; 24. a lifting assembly; 241. a rotating shaft; 242. a hand wheel; 243. a worm; 244. rotating the rod; 245. a worm gear; 25. a guide assembly; 251. a guide bar; 252. a limiting block; 253. a ball bearing; 3. a connecting mechanism; 31. a sleeve; 311. a through hole; 32. inserting a rod; 321. abutting against the groove; 33. a limiting component; 331. a support frame; 332. the spring is tightly propped; 333. a propping block; 4. a rubber ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses high-efficiency electric pipe cutter. Referring to fig. 1, a high-performance electric pipe cutter includes a machine body 1, an auxiliary mechanism 2, and a connecting mechanism 3. The machine body 1 is used for cutting a pipeline, the auxiliary mechanism 2 is used for supporting the pipeline, and the connecting mechanism 3 is used for connecting the auxiliary mechanism 2 to the machine body 1.

Referring to fig. 1 and 2, the auxiliary mechanism 2 includes a support base 21, a movable base 22, an auxiliary wheel 23, a lifting assembly 24, and a guide assembly 25. The supporting seat 21 is disposed on the feeding side of the machine body 1, and the movable seat 22 is mounted right above the supporting seat 21. The auxiliary wheels 23 are used for supporting the pipeline, two auxiliary wheels 23 are arranged on the auxiliary wheels 23, the two auxiliary wheels 23 are symmetrically arranged on two sides of the upper surface of the movable seat 22, and each auxiliary wheel 23 is rotatably connected to the upper surface of the movable seat 22 through a rotating shaft. The lifting assembly 24 and the guide assembly 25 are cooperatively arranged for driving the movable seat 22 to vertically lift. In order to reduce the rigid contact between the auxiliary wheels 23 and the pipeline, a rubber ring 4 is sleeved and fixed on the side wall of each auxiliary wheel 23.

Referring to fig. 1 and 2, the connection mechanism 3 includes a sleeve 31 and an insertion rod 32, the sleeve 31 has a square tube structure, and the insertion rod 32 has a square rod structure. Sleeve pipe 31 is close to organism 1's one end can be dismantled and connect in organism 1 and be close to the lateral wall of supporting seat 21, and sleeve pipe 31 is close to organism 1's one end accessible bolt rigid coupling in organism 1 and is close to the lateral wall of supporting seat 21, and sleeve pipe 31 is close to organism 1's one end also can be through the buckle joint in organism 1 and be close to the lateral wall of supporting seat 21, and the preferred bolt that passes through of this embodiment fixes sleeve pipe 31 at organism 1 and is close to the lateral wall of supporting seat 21. One end of the inserted link 32 close to the machine body 1 is inserted into the sleeve 31, the inserted link 32 slides in the sleeve 31 along the length direction of the pipeline, and one end of the inserted link 32 far from the machine body 1 is welded on the side wall of the support seat 21 close to the machine body 1.

Referring to fig. 1 and 2, the limiting component 33 is used for limiting the insertion rod 32, and the limiting component 33 includes a supporting frame 331, a resisting spring 332 and a resisting block 333. The supporting frame 331 includes a vertical portion and a horizontal portion, a bottom end of the vertical portion of the supporting frame 331 is fixedly connected to an upper surface of the casing 31, one end of the horizontal portion of the supporting frame 331 close to the machine body 1 is fixedly connected to a top end of the vertical portion, and the horizontal portion of the supporting frame 331 extends to one side close to the supporting seat 21. The abutting spring 332 is vertically arranged, and the top end of the abutting spring 332 is fixedly connected to the lower surface of the horizontal part of the supporting frame 331. The abutting block 333 is vertically arranged, and the upper surface of the abutting block 333 is fixedly connected to the bottom end of the abutting spring 332. The upper surface of the inserting rod 32 is provided with a plurality of abutting grooves 321, the abutting grooves 321 are arranged at equal intervals along the length direction of the inserting rod 32, and the abutting grooves 321 are of a hemispherical groove structure. The upper surface of the sleeve 31 is provided with a through hole 311, and the through hole 311 is located right below the abutting block 333. The bottom end of the abutting block 333 is hemispherical, and the lower end of the abutting block 333 can penetrate through the through hole 311 of the sleeve 31 to be in inserted fit with the abutting groove 321 of the inserted rod 32.

Referring to fig. 1 and 3, the lifting assembly 24 includes a rotating shaft 241, a hand wheel 242, a worm 243, a rotating rod 244, and a worm wheel 245. Two working chambers 213 are formed in the support base 21, and the working chambers 213 are disposed in the support base 21 at intervals. The rotating shaft 241 penetrates through the two working chambers 213, two worms 243 are provided, the two worms 243 are sleeved on the side wall of the rotating shaft 241, the two worms 243 are arranged on the side wall of the rotating shaft 241 at intervals, and each worm 243 is arranged in the working chamber 213 in a one-to-one correspondence manner. The rotating rods 244 are provided two, and the two rotating rods 244 are vertically arranged and rotatably connected to the upper surface of the support base 21. The tip of each rotating lever 244 penetrates the lower surface of the movable seat 22, and the tip of each rotating lever 244 is screwed to the lower surface of the movable seat 22. The bottom end of each rotating rod 244 extends into the working chamber 213 and is fixedly connected to a worm wheel 245, and the worm wheel 245 is engaged with the worm 243.

Referring to fig. 1 and 4, two slots 211 are formed in the upper surface of the support base 21, and the two slots 211 are disposed on two sides of the rotation shaft 241. Two limiting grooves 212 are further formed in the supporting base 21, and the two limiting grooves 212 are arranged in one-to-one correspondence with the slots 211. The slot 211 and the limiting slot 212 are rectangular slot bodies, and the side length of the limiting slot 212 is greater than that of the slot 211. The limiting groove 212 is located right below the insertion groove 211, and the insertion groove 211 is communicated with the limiting groove 212. The guide assemblies 25 are provided in two sets, and each set of guide assemblies 25 is in one-to-one correspondence with the slots 211. Each group of guide assemblies 25 comprises a guide rod 251 and a limiting block 252, the guide rod 251 is of a square rod structure, the guide rod 251 is vertically arranged, the top end of the guide rod 251 is fixedly connected to the lower surface of the movable seat 22, and the guide rod 251 vertically slides in the slot 211 of the support seat 21. The lower end of the guide rod 251 passes through the slot 211 of the support base 21 and extends into the limiting groove 212, and the limiting block 252 is fixedly connected to the bottom end of the guide rod 251. The limiting block 252 is a square block, and the limiting block 252 vertically slides in the limiting groove 212 of the supporting seat 21. The four side walls of the limiting block 252 in the horizontal direction are rotatably connected with balls 253, and the side wall of each ball 253 is abutted against the side wall of the limiting groove 212 of the supporting seat 21 and can roll relatively.

The implementation principle of the high-efficiency electric pipe cutter in the embodiment of the application is as follows:

before cutting the pipe, the operator may first place the movable base 22 on the side where the machine body 1 is fed, and then place the pipe to be cut on the ball bearing of the machine body 1 and the auxiliary wheel 23 of the movable base 22 at the same time, thereby facilitating the alignment of the auxiliary wheel 23 of the movable base 22 and the ball bearing of the machine body 1 in the length direction of the pipe.

When it is necessary to align the auxiliary wheel 23 of the movable seat 22 and the ball bearing of the machine body 1 in the vertical direction, the operator may rotate the hand wheel 242 to drive the rotation shaft 241 to rotate, the rotation shaft 241 rotates to drive the two worms 243 to rotate simultaneously, the two worms 243 rotate simultaneously to drive the two worm wheels 245 to rotate simultaneously, thereby driving the two rotating rods 244 to rotate simultaneously, the movable seat 22 is lifted and lowered vertically under the combined action of the two rotating rods 244 and the two guide assemblies 25, thereby facilitating the alignment of the auxiliary wheel 23 of the movable seat 22 and the ball bearing of the machine body 1 in the vertical direction.

When the pipeline of different length of needs cutting, operating personnel can follow the length direction removal supporting seat 21 of pipeline, because link together through sleeve pipe 31 and inserted bar 32 always between organism 1 and the supporting seat 21, when operating personnel removed supporting seat 21, organism 1 is difficult to take place the dislocation with supporting seat 21 on the length direction of pipeline to saved the step that needs align supporting seat 21 and organism 1, so that support the pipeline fast, consequently be convenient for improve the pipe cutting efficiency of organism.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an electronic pipe cutter of high efficiency, includes organism (1), its characterized in that: the pipeline lifting device is characterized by further comprising an auxiliary mechanism (2) for supporting the pipeline and a connecting mechanism (3) for connecting the auxiliary mechanism (2) to the machine body (1), wherein the auxiliary mechanism (2) comprises a supporting seat (21) arranged on one side of the machine body (1), a movable seat (22) is mounted on the upper surface of the supporting seat (21), a lifting assembly (24) for lifting the movable seat (22) is arranged on the supporting seat (21), two auxiliary wheels (23) for supporting the pipeline are rotatably connected to the upper surface of the movable seat (22), and the two auxiliary wheels (23) are symmetrically arranged on two sides of the pipeline; coupling mechanism (3) include sleeve pipe (31) and inserted bar (32), the lateral wall in organism (1) can be dismantled in the one end of sleeve pipe (31), the one end that inserted bar (32) are close to organism (1) slides in sleeve pipe (31) along the horizontal direction, the lateral wall that organism (1) is close to in supporting seat (21) is kept away from to inserted bar (32) one end rigid coupling, coupling mechanism (3) still carry out spacing subassembly (33) including being used for to inserted bar (32).

2. A high efficiency electric pipe cutter as defined in claim 1 wherein: the lifting component (24) comprises a rotating shaft (241) which is horizontally arranged and is rotatably connected in the supporting seat (21), a hand wheel (242) is fixedly connected at one end of the rotating shaft (241) extending to the outer side of the supporting seat (21), two worms (243) which are arranged at intervals are sleeved and fixed on the side wall of the rotating shaft (241), the upper surface of the supporting seat (21) is rotatably connected with two vertically arranged rotating rods (244), the two rotating rods (244) are arranged at intervals, a worm wheel (245) is fixedly sleeved at one end of each rotating rod (244) extending into the supporting seat (21), the worm wheel (245) is meshed with the worm (243), one end of each rotating rod (244) extending to the upper part of the supporting seat (21) is connected into the movable seat (22) in a threaded manner, and a guide assembly (25) used for limiting the vertical lifting of the movable seat (22) is arranged between the supporting seat (21) and the movable seat (22).

3. A high efficiency electric pipe cutter as defined in claim 2 wherein: two slots (211) that the interval set up are seted up to the upper surface of supporting seat (21), direction subassembly (25) include two guide bars (251) of rigid coupling in sliding seat (22) lower surface, the lower extreme one-to-one of guide bar (251) is pegged graft in slot (211) of supporting seat (21), and the lower extreme of guide bar (251) slides in slot (211) of supporting seat (21) along vertical.

4. A high efficiency electric pipe cutter as defined in claim 3 wherein: locating slot (212) has all been seted up under being located every slot (211) in supporting seat (21), locating slot (212) and slot (211) of supporting seat (21) are linked together the setting, every the equal rigid coupling in bottom of guide bar (251) has stopper (252), every stopper (252) are along vertical sliding in limiting slot (212) of supporting seat (21).

5. A high efficiency electric pipe cutter as defined in claim 4 wherein: the peripheral side wall of each limiting block (252) is rotatably connected with a ball (253), and the side wall of each ball (253) is abutted against the side wall of the limiting groove (212) of the supporting seat (21) and can roll relatively.

6. A high efficiency electric pipe cutter as defined in claim 1 wherein: the upper surface of inserted bar (32) is provided with a plurality of tight grooves (321) of supporting along the length direction interval of inserted bar (32), through-hole (311) along vertical extension are seted up to the upper surface of sleeve pipe (31), spacing subassembly (33) are including support frame (331) of rigid coupling in sleeve pipe (31) upper surface, the lower surface rigid coupling of support frame (331) has the tight spring (332) of supporting of vertical setting, the lower extreme rigid coupling of supporting tight spring (332) has the tight piece (333) of supporting of vertical setting, the bottom of supporting tight piece (333) can pass through-hole (311) of sleeve pipe (31) and the tight groove (321) of supporting of inserted bar (32) grafting cooperation.

7. A high efficiency electric pipe cutter as defined in claim 6 wherein: the bottom end of the abutting block (333) is semi-spherical, the abutting groove (321) is a semi-spherical groove body, and one semi-spherical end of the abutting block (333) cannot be completely inserted into the abutting groove (321) of the inserting rod (32).

8. A high efficiency electric pipe cutter as defined in claim 1 wherein: the side wall of each auxiliary wheel (23) is fixedly sleeved with a rubber ring (4).