Cutting device for fire hydrant pipeline

Abstract

The invention relates to the technical field of cutting devices, in particular to a fire hydrant pipeline cutting device which comprises a cutting table, a cutting assembly is arranged on the cutting table, an auxiliary driving wheel for driving a to-be-cut fire hydrant pipeline to rotate is arranged on the cutting assembly, and the cutting device further comprises a guide wheel piece. The support is used for supporting a to-be-cut fire hydrant pipeline or assisting the to-be-cut fire hydrant pipeline in moving; the cutting device comprises a guide wheel part, a cutting assembly, a switching assembly and a downward pressing part, and when the cut-off end of the cutting assembly moves downwards for cutting, the guide wheel part is in the state of bearing a to-be-cut fire hydrant pipeline in parallel through the switching assembly. The downward pressing part and the switching assembly are matched, and when the cut-off end of the cutting assembly moves downwards for cutting, the guide wheel part is in the state of bearing the to-be-cut fire hydrant pipeline in parallel; the auxiliary driving wheel can conveniently drive the to-be-cut pipeline to rotate smoothly; when the cut-off end of the cutting assembly moves upwards, the guide wheel piece is switched to be in the state of guiding and conveying the to-be-cut fire hydrant pipeline, and workers can conveniently achieve displacement of the to-be-cut pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, in particular to a cutting device for fire hydrant pipes. Background Art

[0002] During the installation of fire hydrants, since the fire hydrant pipes need to be adapted according to the actual installation size, the cutting operation of the fire hydrant pipes is inevitably involved. At present, when cutting the fire hydrant pipes, the fire hydrant pipes to be cut are mostly placed on a cutting table with a supporting wheel, and then cut using a cutting device with a liftable cutting end. When cutting, in order to improve the cutting efficiency, the fire hydrant pipes are often rotated during cutting. However, an additional power source is currently required to drive the fire hydrant pipes to rotate, so that the cutting knife (cutting disc) can perform a circular cut on the fire hydrant pipes.

[0003] After searching, the patent with application number 202411386788.4 discloses a cutting device for fire hydrant pipes, in which a cutter of a cutting machine is driven to rotate by a driving mechanism, and an auxiliary driving wheel is driven to rotate by a transmission structure at the same time, the peripheral side of the auxiliary driving wheel abuts against the outer wall of the fire hydrant pipe, and can drive the fire hydrant pipe to rotate, thereby completing the annular cutting of the fire hydrant pipe, which is conducive to achieving the purpose of driving the cutter and driving the fire hydrant pipe to rotate at the same time without using an additional power source;

[0004] However, in order to ensure that the fire hydrant pipe can rotate smoothly, the support wheels supporting the fire hydrant pipe need to be set in the same direction as the fire hydrant pipe. The original intention of this same-direction setting is to meet the needs of pipe rotation and ensure that the pipe can operate normally under specific working conditions. However, in the actual pipe cutting operation scenario, after completing the cutting of a section of the pipe, the staff often needs to move the fire hydrant pipe to perform the cutting operation of another section. At this time, the support wheels set in the same direction expose obvious disadvantages. Since the support wheels are in the same direction as the pipe, when pushing the pipe to move, there is a large angle between the rolling direction and the moving direction of the pipe, which makes the support wheels produce greater resistance. This resistance greatly increases the difficulty for the staff to push the pipe to be cut. The staff needs to spend more physical strength and time to complete the displacement operation of the pipe, and cannot achieve rapid pushing of the pipe to move. The whole process is more troublesome, which seriously affects the efficiency and progress of the cutting operation. For this reason, we propose a cutting device for fire hydrant pipes. Summary of the invention

[0005] In order to solve the above technical problems, the embodiment of the present application provides a cutting device for a fire hydrant pipe, comprising a cutting table, a cutting assembly is provided on the cutting table, an auxiliary driving wheel is provided on the cutting assembly to drive the fire hydrant pipe to be cut to rotate, and also includes:

[0006] A guide wheel member is movably arranged on the cutting table and is used to hold the fire hydrant pipe to be cut or to assist in the movement of the fire hydrant pipe to be cut;

[0007] A switching component and a pressing member, wherein the switching component is connected to the cutting component through the pressing member, and when the cutting end of the cutting component moves downward for cutting, the switching component enables the guide wheel component to be in a state of parallelly supporting the fire hydrant pipe to be cut, and when the cutting end of the cutting component moves upward, the switching component enables the guide wheel component to be switched to a state of guiding the fire hydrant pipe to be cut.

[0008] In some embodiments, the lower pressure member includes a third rack and a first connecting strip whose one end is connected to the auxiliary drive wheel mounting frame, the bottom end of the first connecting strip is connected to a pressure strip, and a retractable blocking member is provided at the end of the pressure strip. The third rack is vertically and liftably arranged on the cutting table, and the outer upper end of the third rack is provided with a through hole for the pressure strip to pass through.

[0009] In some embodiments, the blocking member includes a groove opened at the end of the pressure strip, a spring is connected to the inside of the groove, an insertion strip in the groove is fixed to the free end of the spring, and a stopper is fixed to the outer end of the insertion strip.

[0010] In some embodiments, the guide wheel assembly includes a plurality of transverse wheels and a plurality of longitudinal wheels, the transverse wheels and the longitudinal wheels are alternately distributed, and the transverse wheels and the longitudinal wheels are respectively installed through liftable brackets.

[0011] The switching assembly includes a first driving structure and a lifting structure, the lifting structure is connected to the pressing member through the first driving structure, and the first driving structure includes a first gear meshingly connected to the third rack, the first gear is connected to a first connecting rod, and the first connecting rod is provided with a first belt transmission member.

[0012] In some embodiments, the lifting structure includes a first rack vertically fixed on the longitudinal wheel bracket and a second rack vertically fixed on the transverse wheel bracket, a second gear is meshed between the first rack and the second rack, a second connecting rod is installed on the second gear, and the first belt transmission member is installed between the first connecting rod and the second connecting rod.

[0013] In some embodiments, a vertical first guide bar is fixed to the opposite sides of the first rack and the second rack, a second guide groove matching the first guide bar is provided on the cutting table, a first guide groove is also provided on the cutting table, and a second guide bar matching the first guide groove is connected to the third rack.

[0014] In some embodiments, the guide wheel member is a plurality of deflection wheels arranged along the length direction of the cutting table, and the deflection wheels are rotatably arranged on their brackets.

[0015] In some embodiments, the switching assembly includes a second driving structure and a deflection structure, the second driving structure includes a third gear and a fourth connecting rod, the third gear is meshed and connected to a third rack, the third gear is connected to a third connecting rod, and a second belt transmission member is connected between the fourth connecting rod and the third connecting rod;

[0016] In some embodiments, the deflection structure includes a first bevel gear installed on the end of a fourth connecting rod, the first bevel gear is meshedly connected to a second bevel gear, the second bevel gear is connected to a fourth gear via an axis, the bottom end of the deflection wheel is installed with a fifth gear via an axis, and the fourth rack is meshedly connected to two adjacent fifth gears.

[0017] In some embodiments, it also includes a follow-up rotating assembly, which includes a fifth connecting rod rotatably connected to the end of the second connecting rod, the outer end of the fifth connecting rod is connected to the second connecting bar, the second connecting bar is connected to a vertical fourth rack, and the end of the rotating shaft of the longitudinal wheel is equipped with a sixth gear that can engage with the fourth rack, and the rotating shaft of the longitudinal wheel on the same side is commonly provided with a third belt transmission member.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. Convenient guide wheel switching: through the cooperation of the pressing piece and the switching assembly, when the cutting end of the cutting assembly moves down for cutting, the guide wheel is in a state of parallel support for the fire hydrant pipe to be cut, which is convenient for the auxiliary driving wheel to drive the pipe to be cut to rotate smoothly; when the cutting end of the cutting assembly moves up, the guide wheel is switched to a state of guiding the fire hydrant pipe to be cut, which is convenient for the staff to realize the displacement of the pipe to be cut, and improves the efficiency and progress of the cutting operation.

[0020] 2. Use the longitudinal wheels to support the fire hydrant pipe to be moved, and the longitudinal wheels roll in the same direction, which is convenient for the staff to apply force to move the fire hydrant pipe forward, effectively reducing manpower and increasing the efficiency of pipe displacement.

[0021] 3. The follow-up rotating assembly provides the longitudinal wheel with initial rotating power, which is more conducive to the staff to quickly shift the fire hydrant pipe when the cutting end of the cutting assembly moves up, saving more manpower.

[0022] 4. By synchronizing the up and down movement of the cutting end of the cutting assembly with the lifting and switching of the transverse wheel and the longitudinal wheel, compared with using multiple independent drive devices and complex transmission systems to control the lifting and lowering of the transverse wheel and the longitudinal wheel respectively, this synchronization method can make the mechanical structure of the entire cutting equipment more compact and simple, reduce the manufacturing and maintenance costs of the equipment, and also improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention in the embodiment below;

[0024] Figure 2 It is a structural schematic diagram of another aspect of the present invention in the embodiment below;

[0025] Figure 3 This is a structural schematic diagram of a guide wheel member, a switching assembly and a lower pressing member in a combined state according to an embodiment of the present invention;

[0026] Figure 4 It is a structural schematic diagram of another position of a lower guide wheel member, a switching assembly and a lower pressing member in a combined state according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a switching component according to an embodiment of the present invention;

[0028] Figure 6 It is a front view structural schematic diagram of the lower guide wheel component, the switching component and the follow-up rotating component of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the lower pressing member of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the lower pressing member of the present invention in a disassembled state;

[0031] Fig. 9 It is a schematic diagram of the structure of the cutting table of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the present invention under the second embodiment;

[0033] Fig.11 It is a schematic structural diagram of the lower guide wheel member, the switching assembly and the lower pressure member in the combined state of the second embodiment of the present invention.

[0034] In the figure: 1-cutting table; 101-first guide groove; 102-second guide groove; 2-cutting assembly; 3-auxiliary driving wheel;

[0035] 4-guide wheel; 41-transverse wheel; 42-longitudinal wheel; 43-deflection wheel;

[0036] 5-switching assembly; 51-first driving structure; 511-first connecting rod; 512-first gear; 513-first belt transmission member; 52-lifting structure; 521-second connecting rod; 522-second gear; 523-first rack; 524-second rack; 525-first guide bar; 53-second driving structure; 531-third connecting rod; 532-third gear; 533-second belt transmission member; 534-fourth connecting rod; 54-deflection structure; 541-first bevel gear; 542-second bevel gear; 543-fourth gear; 544-fifth gear;

[0037] 6-pressing member; 61-first connecting strip; 62-pressing strip; 621-groove; 63-third rack; 631-perforation; 64-second guide strip; 65-blocking member; 651-spring; 652-insertion strip; 653-blocking block;

[0038] 7-follow-up rotating assembly; 71-fifth connecting rod; 72-second connecting bar; 73-fourth rack; 74-sixth gear; 75-third belt transmission member. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0040] Example 1: Please refer to Figure 1-Figure 9As shown, the present invention provides a technical solution: a cutting device for fire hydrant pipes, comprising a cutting table 1, a cutting assembly 2 is provided on the cutting table 1, the cutting end of the cutting assembly 2 can be raised and lowered, and an auxiliary driving wheel 3 is provided on the cutting assembly 2 for driving the fire hydrant pipe to be cut to rotate. The auxiliary driving wheel 3 shares the rotating shaft of the auxiliary cutting assembly 2, so that when cutting, the peripheral side of the auxiliary driving wheel abuts against the outer wall of the fire hydrant pipe to drive the fire hydrant pipe to rotate, thereby completing the annular cutting of the fire hydrant pipe, which is conducive to achieving the purpose of driving the cutter and driving the fire hydrant pipe to rotate at the same time without using an additional power source. The above is the prior art, and the specific structure is herein Without further elaboration, it also includes a guide wheel member 4, a switching component 5 and a pressing member 6. The guide wheel member 4 is movably arranged on the cutting table 1, and is used to support the fire hydrant pipe to be cut or assist in the movement of the fire hydrant pipe to be cut. The switching component 5 is connected to the cutting component 2 through the pressing member 6. When the cut end of the cutting component 2 moves down for cutting, the guide wheel member 4 is made to be in a state of parallel support for the fire hydrant pipe to be cut through the switching component 5, so that the auxiliary driving wheel 3 can be used to drive the pipe to be cut to rotate smoothly during cutting. When the cut end of the cutting component 2 moves up, the guide wheel member 4 is switched to a state of guiding the fire hydrant pipe to be cut through the switching component 5, so as to facilitate the staff to achieve the displacement of the pipe to be cut.

[0041] Among them, see Figure 1-Figure 2 as well as Figure 7-Figure 8 As shown, the pressing member 6 includes a third rack 63 and a first connecting bar 61 whose one end is connected to the mounting frame of the auxiliary driving wheel 3, the bottom end of the first connecting bar 61 is connected to a pressure bar 62, and a retractable blocking member 65 is provided at the end of the pressure bar 62. The third rack 63 is vertically and liftably arranged on the cutting table 1, and a through hole 631 is provided at the outer upper end of the third rack 63 for the pressure bar 62 to pass through. When the cutting component 2 rotates and moves downward along the mounting axis on the mounting frame, the first connecting bar 61 drives the pressure bar 62 to press down to move the third rack 63. When the cutting component 2 rotates and moves upward along the mounting axis on the mounting frame, the first connecting bar 61 will drive the pressure bar 62 to move upward to move the third rack 63.

[0042] See also Figure 8 As shown, the blocking member 65 includes a groove 621 opened at the end of the pressure strip 62, and a spring 651 is connected to the inside of the groove 621. The free end of the spring 651 is fixed with an insertion strip 652 in the groove 621, and the outer end of the insertion strip 652 is fixed with a stopper 653. After the pressure strip 62 is pressed down until its end passes through the through hole 631, the stopper 653 abuts against the third rack 63. As it continues to move downward, the insertion strip 652 can move partially outward to prevent the blocking member 65 from separating from the pressure strip 62. When the pressure strip 62 moves upward, the third rack 63 can be moved upward again by utilizing the pressure strip 62 and the blocking member 65.

[0043] See also Figure 1-Figure 4As shown, the guide wheel member 4 includes a plurality of transverse wheels 41 and a plurality of longitudinal wheels 42. The transverse wheels 41 and the longitudinal wheels 42 are distributed alternately. The transverse wheels 41 and the longitudinal wheels 42 are respectively installed through liftable brackets. The transverse wheels 41 are used to support the fire hydrant pipe during cutting, and the longitudinal wheels 42 are used to support the fire hydrant pipe during displacement.

[0044] See also Figure 5 As shown, the switching assembly 5 includes a first driving structure 51 and a lifting structure 52, the lifting structure 52 is connected to the pressing member 6 through the first driving structure 51, and the first driving structure 51 includes a first gear 512 meshingly connected to the third rack 63, the first gear 512 is connected to a first connecting rod 511, and the first connecting rod 511 is provided with a first belt transmission member 513;

[0045] The lifting structure 52 includes a first rack 523 vertically fixed on the bracket of the longitudinal wheel 42 and a second rack 524 vertically fixed on the bracket of the transverse wheel 41. A second gear 522 is meshed between the first rack 523 and the second rack 524. A second connecting rod 521 is installed on the second gear 522. The first belt transmission member 513 is installed between the first connecting rod 511 and the second connecting rod 521.

[0046] See also Figure 5 as well as Figure 7-Figure 9 As shown, a vertical first guide bar 525 is fixed to the opposite side of the first rack 523 and the second rack 524, a second guide groove 102 matching the first guide bar 525 is provided on the cutting table 1, a first guide groove 101 is also provided on the cutting table 1, and a second guide bar 64 matching the first guide groove 101 is connected to the third rack 63. By moving the second guide bar 64 along the first guide groove 101 and by moving the first guide bar 525 along the second guide groove 102, the stability of the vertical movement of the third rack 63, the first rack 523 and the second rack 524 can be ensured, and it is not easy to be skewed.

[0047] Through the above, in actual use, in the initial stage, the cutting end of the cutting assembly 2 is at the upper end, at which time the longitudinal wheel 42 is higher than the transverse wheel 41, and when the cutting assembly 2 rotates and moves downward along the mounting axis on the mounting frame, the first connecting strip 61 drives the pressure strip 62 to press down the third rack 63, and the third rack 63 moves downward to drive the meshed first gear 512 to rotate, so as to use the first belt transmission member 513 to drive the second connecting rod 521 to rotate, thereby realizing the rotation of the second gear 522, thereby realizing the downward movement of the first rack 523 and the upward movement of the second rack 524, so that the longitudinal wheel 42 moves downward and the transverse wheel 41 moves upward to switch, so that the fire hydrant pipe to be cut can be placed on the transverse wheel 41 for cutting, so as to ensure that the fire hydrant pipe to be cut is driven to rotate by the auxiliary driving wheel 3 during cutting;

[0048] After a cut is completed, the cutting assembly 2 will rotate and move upward along the mounting axis on the mounting frame. While moving upward, the pressure strip 62 is used to drive the third rack 63 to move upward to change the reverse rotation of the first gear 512, thereby realizing the switching of the longitudinal wheel 42 moving upward and the transverse wheel 41 moving downward, so that the longitudinal wheel 42 can be used to support the fire hydrant pipe to be shifted, so that the longitudinal wheels 42 rolling in the same direction can be used to facilitate the staff to apply force to realize the forward movement of the fire hydrant pipe, which can effectively reduce manpower, increase the efficiency of pipe displacement, and improve the efficiency and progress of the cutting operation.

[0049] In addition, the cutting end position of the cutting assembly 2 can usually be controlled by a precise mechanical structure or control system. This precise up and down movement can accurately transmit the movement to the transverse wheel 41 and the longitudinal wheel 42, and realize the precise switching of their lifting and lowering. This precise control can ensure the accuracy and consistency of cutting and reduce errors.

[0050] By synchronizing the up and down movement of the cutting end of the cutting assembly 2 with the lifting and lowering switching of the transverse wheel 41 and the longitudinal wheel 42, this synchronization method can make the mechanical structure of the entire cutting device more compact and simple, reduce the manufacturing and maintenance costs of the equipment, and also improve the reliability and stability of the equipment;

[0051] Synchronous lifting and switching of the horizontal wheel 41 and the longitudinal wheel 42 can reduce the movement time of the equipment and the pause during the action conversion process, making the cutting process smoother. In continuous cutting operations, fast and accurate lifting and switching of the wheel group can increase the cutting speed, shorten the processing cycle, and thus improve production efficiency.

[0052] Example 2: Please refer to Figure 10-11 As shown, the difference between this embodiment 2 and embodiment 1 is that the guide wheel member 4 is a plurality of deflection wheels 43 arranged along the length direction of the cutting table 1, and the deflection wheels 43 are all rotatably arranged on their brackets.

[0053] See also Fig.11 As shown, the switching assembly 5 includes a second driving structure 53 and a deflection structure 54. The second driving structure 53 includes a third gear 532 and a fourth connecting rod 534. The third gear 532 is meshed and connected to the third rack 63. The third gear 532 is connected to a third connecting rod 531. A second belt transmission member 533 is connected between the fourth connecting rod 534 and the third connecting rod 531.

[0054] The deflection structure 54 includes a first bevel gear 541 installed at the end of the fourth connecting rod 534, the first bevel gear 541 is meshedly connected with the second bevel gear 542, the second bevel gear 542 is connected with the fourth gear 543 through a shaft, the bottom end of the deflection wheel 43 is installed with a fifth gear 544 through a shaft, and the fourth rack 73 is meshedly connected with two adjacent fifth gears 544.

[0055] Through the above, in the initial stage, the cutting end of the cutting component 2 is at the upper end, and the deflection wheel 43 is in a state of being able to guide the fire hydrant pipe to be cut. When the cutting component 2 rotates and moves downward for cutting, the first connecting strip 61 drives the pressure strip 62 to press down the third rack 63, and the third rack 63 moves downward to drive the meshing third gear 532 to rotate, so as to utilize the second belt transmission member 533 to drive the fourth connecting rod 534 to rotate, thereby realizing the rotation of the first bevel gear 541, and then realizing the rotation of the second bevel gear 542 and the fourth gear 543, so that the deflection wheel 43 is deflected to a state parallel to the pipe to be cut, and when the cutting component 2 moves upward, the reverse action is also realized to deflect the deflection wheel 43 to the state of guiding the fire hydrant pipe to be cut.

[0056] As described above, according to the actual setting of the transmission ratio between the first bevel gear 541 and the second bevel gear 542, the deflection wheel 43 can be adjusted to deflect by 90 degrees;

[0057] Moreover, in this embodiment, the number of protruding teeth on the third rack 63 needs to be specially set so that after the deflection wheel 43 switches from the guiding state to the state of rotating in coordination with the pipe to be cut, it will not continue to deflect. At this time, if the cutting end of the cutting assembly 2 continues to move downward, the position of the third rack 63 corresponding to the third gear 532 has no meshing teeth, so that the downward movement of the third gear 532 will not drive the third gear 532 to continue to rotate, so as to ensure that the deflection angle remains at 90°.

[0058] Example 3: Please refer to Figure 3-Figure 4 As shown, this embodiment is extended on the basis of implementation 1: the cutting device for fire hydrant pipes also includes a follow-up rotating assembly 7, which includes a fifth connecting rod 71 rotatably connected to the end of the second connecting rod 521, the outer end of the fifth connecting rod 71 is connected to a second connecting bar 72, and the second connecting bar 72 is connected to a vertical fourth rack 73, and the end of the rotating shaft of the longitudinal wheel 42 is installed with a sixth gear 74 that can mesh with the fourth rack 73, and the rotating shafts of the longitudinal wheels 42 on the same side are jointly provided with a third belt transmission member 75.

[0059] Through the above, when the longitudinal wheel 42 moves up and the transverse wheel 41 moves down, since the sixth gear 74 on the longitudinal wheel 42 is at the lower end, it is engaged with the fourth rack 73, so that when the longitudinal wheel 42 moves up, the sixth gear 74 rotates along the direction of movement of the fire hydrant pipe to be cut, thereby providing the longitudinal wheel 42 with initial rotation power, which is more conducive to the staff to quickly realize the displacement of the fire hydrant pipe when the cutting end of the cutting assembly 2 moves up, and saves manpower.

[0060] The length of the fourth rack 73 is limited. When the longitudinal wheel 42 moves to the highest position, the sixth gear 74 and the fourth rack 73 are no longer engaged, so that the longitudinal wheel 42 can rotate freely.

[0061] It should be noted that, when the longitudinal wheel 42 moves downward and the transverse wheel 41 moves upward, the sixth gear 74 will be in meshing state with the fourth rack 73, which will cause the longitudinal wheel 42 to rotate in the opposite direction, causing the pipe to be cut to move back a distance. Based on this, the following design can be made:

[0062] (1) The length of the fourth rack 73 is set so that when the longitudinal wheel 42 and the transverse wheel 41 are switched to the horizontal position, the sixth gear 74 is just in a disengaged state;

[0063] (2) When the cutting end of the cutting assembly 2 moves upward to the upper end, the fire hydrant pipe to be cut is moved by manpower beyond a certain distance, so that when the next cutting is made, the position of the fire hydrant pipe to be cut after moving back is exactly in the area to be cut.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A cutting device for fire hydrant pipes, comprising a cutting table (1), wherein the cutting table (1) is provided with a cutting assembly (2), wherein the cutting assembly (2) is provided with an auxiliary driving wheel (3) for driving the fire hydrant pipe to be cut to rotate, wherein: Also included are: A guide wheel member (4) is movably arranged on the cutting table (1) and is used to support the fire hydrant pipe to be cut or to assist in the movement of the fire hydrant pipe to be cut; A switching component (5) and a pressing member (6), wherein the switching component (5) is connected to the cutting component (2) via the pressing member (6); when the cutting end of the cutting component (2) moves downward for cutting, the switching component (5) causes the guide wheel component (4) to be in a state of parallelly supporting the fire hydrant pipe to be cut; and when the cutting end of the cutting component (2) moves upward, the switching component (5) causes the guide wheel component (4) to be switched to a state of guiding the fire hydrant pipe to be cut.

2. The cutting device for fire hydrant pipe according to claim 1, characterized in that: The pressing member (6) comprises a third rack (63) and a first connecting bar (61) one end of which is connected to a mounting frame of the auxiliary driving wheel (3); the bottom end of the first connecting bar (61) is connected to a pressure bar (62); a retractable blocking member (65) is provided at the end of the pressure bar (62); the third rack (63) is vertically and liftably arranged on the cutting table (1); and a through hole (631) is provided at the outer upper end of the third rack (63) for the pressure bar (62) to pass through.

3. The cutting device for fire hydrant pipe according to claim 2, characterized in that: The blocking member (65) comprises a groove (621) formed at the end of the pressure strip (62); a spring (651) is connected to the interior of the groove (621); an insertion strip (652) located in the groove (621) is fixed to the free end of the spring (651); and a stopper (653) is fixed to the outer end of the insertion strip (652).

4. The cutting device for fire hydrant pipe according to claim 3, characterized in that: The guide wheel member (4) comprises a plurality of transverse wheels (41) and a plurality of longitudinal wheels (42), wherein the transverse wheels (41) and the longitudinal wheels (42) are alternately distributed, and the transverse wheels (41) and the longitudinal wheels (42) are respectively installed via liftable brackets.

5. The cutting device for fire hydrant pipe according to claim 4, characterized in that: The switching assembly (5) comprises a first driving structure (51) and a lifting structure (52); the lifting structure (52) is connected to the pressing member (6) via the first driving structure (51); the first driving structure (51) comprises a first gear (512) meshingly connected to a third rack (63); the first gear (512) is connected to a first connecting rod (511); and the first connecting rod (511) is provided with a first belt transmission member (513).

6. The cutting device for fire hydrant pipe according to claim 5, characterized in that: The lifting structure (52) comprises a first rack (523) vertically fixed on a bracket of a longitudinal wheel (42) and a second rack (524) vertically fixed on a bracket of a transverse wheel (41); a second gear (522) is meshed between the first rack (523) and the second rack (524); a second connecting rod (521) is installed on the second gear (522); and the first belt transmission member (513) is installed between the first connecting rod (511) and the second connecting rod (521).

7. The cutting device for fire hydrant pipe according to claim 6, characterized in that: A vertical first guide bar (525) is fixed on the opposite sides of the first rack (523) and the second rack (524); a second guide groove (102) matching the first guide bar (525) is provided on the cutting table (1); a first guide groove (101) is also provided on the cutting table (1); and a second guide bar (64) matching the first guide groove (101) is connected to the third rack (63).

8. The cutting device for fire hydrant pipe according to claim 3, characterized in that: The guide wheel member (4) is a plurality of deflection wheels (43) arranged along the length direction of the cutting table (1), and the deflection wheels (43) are all rotatably arranged on their brackets.

9. The cutting device for fire hydrant pipe according to claim 8, characterized in that: The switching assembly (5) comprises a second driving structure (53) and a deflection structure (54); the second driving structure (53) comprises a third gear (532) and a fourth connecting rod (534); the third gear (532) is meshedly connected to a third rack (63); a third connecting rod (531) is connected to the third gear (532); a second belt transmission member (533) is connected between the fourth connecting rod (534) and the third connecting rod (531); The deflection structure (54) comprises a first bevel gear (541) mounted on the end of a fourth connecting rod (534); the first bevel gear (541) is meshedly connected to a second bevel gear (542); the second bevel gear (542) is connected to a fourth gear (543) via an axle; a fifth gear (544) is mounted on the bottom end of the deflection wheel (43) via an axle; and the fourth rack (73) is meshedly connected to two adjacent fifth gears (544).

10. The cutting device for fire hydrant pipe according to claim 6, characterized in that: It also includes a follow-up rotating assembly (7), which includes a fifth connecting rod (71) rotatably connected to the end of the second connecting rod (521), the outer end of the fifth connecting rod (71) is connected to a second connecting bar (72), the second connecting bar (72) is connected to a vertical fourth rack (73), the end of the rotating shaft of the longitudinal wheel (42) is equipped with a sixth gear (74) that can mesh with the fourth rack (73), and the rotating shaft of the longitudinal wheel (42) on the same side is commonly provided with a third belt transmission member (75).

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