A hydraulic pipe pile cutting machine

Abstract

The present invention relates to the technical field of building pipe piles, and in particular to a hydraulic pipe pile cutting machine, comprising a fixed seat, a saw blade and an adjusting wheel, wherein the fixed seat is sleeved on the pipe pile, a guide rail is arranged on the circumference of the fixed seat, the cross section of the pipe pile is an elliptical ring, and the cross section of the pipe pile has a first pole and a second pole, the first pole and the second pole are located at two ends of the outer ring major diameter of the elliptical ring and are symmetrical about the center of the elliptical ring; the axes of the saw blade and the adjusting wheel are perpendicular to the cross section of the pipe pile, and the adjusting wheel is provided with a plurality of retractable teeth, and the adjusting wheel can mesh with the guide rail through the teeth and drive the saw blade to rotate around the pipe pile along the guide rail; when the adjusting wheel is located at the first pole and the second pole position, half of the teeth of the adjusting wheel are retracted. The cross section of the first pole and the second pole position of the pipe pile is thicker than that of other positions, and when the adjusting wheel is at the first pole and the second pole position of the pipe pile, the saw blade intermittently cuts the pipe pile, which can increase the kinetic energy when the saw blade contacts the pipe pile, thereby improving the cutting effect and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of building pipe piles, in particular to a hydraulic pipe pile cutting machine. Background Art

[0002] Most of the foundations of industrial buildings, public buildings and civil buildings are based on prefabricated pipe piles. Due to different geological conditions and requirements for pipe pile construction, it is generally difficult for prefabricated pipe piles on site to reach the designed elevation of the pile top, and some prefabricated pipe piles need to be cut. The prefabricated pipe piles currently used on construction sites are of high strength. However, due to the complex conditions on the construction site, in addition to the standard ring-cut piles, there are also bevel-cut piles. The cross-section thickness of the bevel-cut piles is uneven. The traditional method of cutting concrete pipe piles mostly relies on manual operation, which not only has low construction efficiency, but also requires high technical skills of the operators. Summary of the invention

[0003] Based on this, it is necessary to provide a hydraulic pipe pile cutter to address the problems of low working efficiency and high labor requirements during the use of the current pile cutter.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A hydraulic pipe pile cutting machine is used for oblique cutting of hollow pipe piles, so that the angle between the cross section of the pipe pile and the axis of the pipe pile is less than ninety degrees, comprising a fixed seat and a cutting mechanism, the fixed seat is sleeved on the pipe pile, the peripheral surface of the fixed seat is provided with guide rails, the guide rails are evenly distributed around the axis of the pipe pile, the plane where the guide rails are located is parallel to the cross section of the pipe pile, the cross section of the pipe pile is an elliptical ring, the cross section of the pipe pile has a first pole and a second pole, the first pole and the second pole are located at the two ends of the outer ring major diameter of the elliptical ring and are symmetrical about the center of the elliptical ring; the cutting mechanism comprises a mounting plate, a motor, a saw blade, a moving group The motor is fixedly mounted on the mounting plate, the saw blade is fixedly mounted on the output shaft of the motor, and the axis of the saw blade is perpendicular to the cross section of the pipe pile. The moving component includes an adjusting wheel, and the adjusting wheel is provided with a plurality of retractable teeth. The adjusting wheel can mesh with the guide rail through the teeth and drive the mounting plate to rotate around the pipe pile along the guide rail. The connecting line between the axis of the adjusting wheel and the axis of the saw blade extends along the radial direction of the pipe pile. When the adjusting wheel is located at the first pole and the second pole, half of the teeth of the adjusting wheel are retracted. The transmission component is used to connect the motor and the adjusting wheel, so that the rotation of the motor can drive the rotation of the adjusting wheel.

[0006] Preferably, the fixed seat includes a first plate and a second plate, both of which are L-shaped plates composed of two flat plates, and two of the first plate and the second plate are provided, the two first plates and the two second plates are alternately distributed around the circumference of the pipe pile, the adjacent first plates and the second plates are slidably connected, the first plate and a second plate adjacent to one side thereof are relatively slidably connected along a first direction, the first plate and a second plate adjacent to the other side thereof are relatively slidably connected along a second direction, the first direction and the second direction are both parallel to the cross-section of the pipe pile and perpendicular to each other, and two hydraulic cylinders are fixedly installed on each first plate, one of the hydraulic cylinders is telescoped along the first direction and fixedly connected to a corresponding second plate, and the other hydraulic cylinder is telescoped along the second direction and fixedly connected to the corresponding other second plate.

[0007] Preferably, the connection position of the two flat plates constituting the first plate and the connection position of the two flat plates constituting the second plate are both provided with chamfers.

[0008] Preferably, the adjusting wheel includes a rotating column and a bevel gear, the rotating column is rotatably arranged, and a chamfer is provided on the end face of the rotating column, and a plurality of tooth blocks are provided on the chamfer, and the plurality of tooth blocks are evenly arranged around the axis of the rotating column, and the bevel gear is slidably arranged on the rotating column along the axial direction of the rotating column, and the bevel gear is covered on the end face and the chamfer of the rotating column, the bevel gear is coaxial with the rotating column, and a side of the bevel gear provided with teeth faces away from the rotating column, the tooth block penetrates the conical surface of the bevel gear along the axial direction of the rotating column and is slidably connected with the bevel gear, and each tooth block is located between two adjacent teeth on the bevel gear, and the tooth block can increase the number of teeth on the corresponding bevel gear.

[0009] Preferably, the guide rail is wound around the first plate and the second plate on a surface away from the pipe pile, the guide rail includes two first sections and two second sections, the two first sections are respectively located at the first pole and the second pole of the pipe column cross section, and each second section is connected to one end of the two first sections; the first section includes a first surface and two second surfaces, the first surface is located between the two second surfaces, and the first surface is respectively connected to the two second surfaces, the two second surfaces are away from each other from the side connected to the first surface to the side away from the first surface, and each second surface gradually moves away from the pipe pile from the side connected to the first surface, the bevel gear can contact the second surface, and when When the bevel gear contacts the second surface, the side of the tooth block away from the rotating column is located on the same plane as the tooth root of the bevel gear; each second section includes a third surface and two fourth surfaces, the third surface is respectively connected to the two first surfaces, the third surface is located between the two fourth surfaces, and the third surface is respectively connected to the two fourth surfaces, the two fourth surfaces are away from each other from the side connected to the third surface to the side away from the third surface, and each fourth surface gradually moves away from the pipe pile from the side connected to the third surface, the bevel gear can contact the fourth surface, and when the bevel gear contacts the fourth surface, the side of the tooth block away from the rotating column is located on the same plane as the teeth on the bevel gear.

[0010] Preferably, the transmission assembly includes a fixed cylinder, a sleeve, a transmission belt, a deceleration part and a tensioning part. The fixed cylinder is sleeved on the output shaft of the motor and fixedly connected to the mounting plate. The sleeve is slidably arranged on the fixed cylinder along the radial direction of the output shaft of the motor, and the axis of the sleeve extends along the axial direction of the output shaft of the motor. The rotating column is sleeved in the sleeve and the rotating column and the sleeve are rotatably connected. The transmission belt is wound around the rotating column and the output shaft of the motor. The deceleration part is used to transfer the kinetic energy of the motor to the rotating column through the transmission belt; the tensioning part is used to adjust the tension of the transmission belt according to the distance between the sleeve and the output shaft of the motor and can be used to position the saw blade when it contacts the pipe pile.

[0011] Preferably, the speed reduction portion includes a friction ring and a plurality of rotating wheels, the friction ring is sleeved on the output shaft of the motor, and the friction ring is rotatably connected to the output shaft of the motor, the plurality of rotating wheels are rotatably arranged on the end face of the friction ring, the rotation axis of the rotating wheel extends along the axial direction of the friction ring, the plurality of rotating wheels are evenly arranged around the axis of the friction ring, and each rotating wheel is respectively in contact with the inner wall of the fixed cylinder and the output shaft of the motor, and the friction ring is supported on the inner side of the transmission belt; as the motor rotates, the motor will drive the plurality of rotating wheels to rotate around its own axis, and the rotating rotating wheels will roll on the inner wall of the fixed cylinder through contact with the fixed cylinder, thereby driving the friction ring to rotate at a low speed, and then enabling the rotating column to move slowly in the guide rail.

[0012] Preferably, the tensioning part includes a first telescopic rod, a second telescopic rod, a bracket and a guide wheel, one end of the first telescopic rod and the second telescopic rod are fixedly mounted on the fixed cylinder, the first telescopic rod and the second telescopic rod are located on both sides of the fixed cylinder and are both telescopic in the radial direction of the fixed cylinder, one end of the first telescopic rod away from the fixed cylinder is fixedly connected to the sleeve; the bracket is fixedly connected to one end of the second telescopic rod away from the fixed cylinder, the guide wheel is rotatably arranged on the bracket, and the rotation axis of the guide wheel extends along the extension direction of the axis of the rotating column, and the guide wheel is supported on the inner side of the transmission belt.

[0013] Preferably, a second spring is provided in the first telescopic rod, a third spring is provided in the second telescopic rod, and the elastic coefficient of the second spring is greater than the elastic coefficient of the third spring; under normal conditions, the first telescopic rod is in a natural state, the second telescopic rod is in a contracted state, and under normal conditions, the distance between the bevel gear and the axis of the saw blade is greater than the radius of the saw blade.

[0014] Preferably, two rotating rods are rotatably provided on the sleeve, the rotating axes of the two rotating rods extend along the axial extension direction of the sleeve, and the two rotating rods are located at the front and rear sides of the sleeve in the forward direction of the sleeve on the track, and a torsion spring is provided between each rotating rod and the sleeve.

[0015] The beneficial effects of the present invention are as follows: when the hollow pipe pile is obliquely cut, the cross-sectional shape of the pipe pile is in the shape of an elliptical ring, and in the plane where the cross-sectional shape is located, the distance between the first pole and the second pole and the inner ring is greater than the distance between other positions of the outer ring and the inner ring, and the contact area between the saw blade and the pipe pile is the largest when cutting at this position, and the resistance of the saw blade is the largest. When cutting, the operator should appropriately change the cutting progress to avoid the saw blade from getting stuck. By setting a transmission component, the adjusting wheel can drive the saw blade to cut the pipe pile along the guide rail, and the operation is relatively labor-saving; through the meshing cooperation between the adjusting wheel and the guide rail, the speed at which the adjusting wheel advances on the guide rail is more stable, and the cutting efficiency is higher; when cutting the pipe pile, the cross-sectional shape of the first pole and the second pole of the pipe pile is thicker than that of other positions, and when the adjusting wheel is at the first pole and the second pole of the pipe pile, due to the reduction in the number of teeth of the adjusting wheel, the adjusting wheel advances intermittently in the guide rail, and the saw blade intermittently cuts the pipe pile, which can reduce the probability of the saw blade getting stuck during the cutting process, and at the same time can also increase the kinetic energy of the saw blade when it contacts the pipe pile, thereby improving the cutting effect and cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a hydraulic pipe pile cutting machine provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a cutting mechanism of a hydraulic pipe pile cutter provided in an embodiment of the present invention;

[0018] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 A front view of a cutting mechanism of a hydraulic pipe pile cutter provided by an embodiment of the present invention;

[0020] Figure 5 for Figure 4 Cross-sectional view along the BB direction;

[0021] Figure 6 for Figure 5 The enlarged view of point D in the middle;

[0022] Figure 7 for Figure 4 Sectional view along CC direction;

[0023] Figure 8 A schematic structural diagram of a fixing seat of a hydraulic pipe pile cutter provided in an embodiment of the present invention.

[0024] in:

[0025] 100, first plate; 101, second plate; 102, hydraulic cylinder; 103, first section; 104, second section; 110, mounting plate; 111, motor; 112, saw blade; 113, rotating column; 114, guide column; 115, bevel gear; 116, tooth block; 117, slide groove; 118, first spring; 119, through groove; 201, fixed cylinder; 202, sleeve; 203, transmission belt; 204, handle; 205, friction ring; 206, rotating wheel; 207, first telescopic rod; 208, second telescopic rod; 209, bracket; 210, guide wheel; 211, rotating rod; 212, roller; 213, pipe pile. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figures 1 to 8As shown, an embodiment of the present invention provides a hydraulic pipe pile cutting machine, which is used for oblique cutting of hollow pipe piles 213, so that the angle between the cross section of the pipe pile 213 and the axis of the pipe pile 213 is less than ninety degrees, and includes a fixed seat and a cutting mechanism, the fixed seat is sleeved on the pipe pile 213, and the peripheral surface of the fixed seat is provided with guide rails, the guide rails are evenly distributed around the axis of the pipe pile 213, and the plane where the guide rails are located is parallel to the cross section of the pipe pile 213, the cross section of the pipe pile 213 is an elliptical ring, and the cross section of the pipe pile 213 has a first pole and a second pole, the first pole and the second pole are located on the long diameter of the outer ring of the elliptical ring and are symmetrical about the center of the elliptical ring; the cutting mechanism includes a mounting plate 110, a motor 111, a saw blade 112, a moving component and a transmission group The motor 111 is fixedly mounted on the mounting plate 110, the saw blade 112 is fixedly mounted on the output shaft of the motor 111, and the axis of the saw blade 112 is perpendicular to the cross-section of the pipe pile 213. The moving component includes an adjusting wheel, which is arranged on the mounting plate 110. The adjusting wheel is provided with a plurality of retractable teeth. The adjusting wheel can mesh with the guide rail through the teeth and drive the mounting plate 110 to rotate around the pipe pile 213 along the guide rail; the connecting line between the axis of the adjusting wheel and the axis of the saw blade 112 extends along the radial direction of the pipe pile 213; when the adjusting wheel is located at the first pole position and the second pole position, half of the teeth of the adjusting wheel are retracted; the transmission component is used to connect the motor 111 and the adjusting wheel, so that the rotation of the motor 111 can drive the adjusting wheel to rotate.

[0030] When the hollow pipe pile 213 is obliquely cut, the cross-sectional shape of the pipe pile 213 is an elliptical ring shape. In the plane where the cross-sectional shape is located, the distance between the first pole and the second pole and the inner ring is greater than the distance between other positions of the outer ring and the inner ring. When the saw blade 112 cuts at this position, the contact area with the pipe pile 213 is the largest, and the resistance encountered by the saw blade 112 is the largest. The operator should appropriately change the cutting progress during cutting to avoid the saw blade 112 from getting stuck. By setting a transmission component, the adjusting wheel can drive the saw blade 112 along the guide rail to cut the pipe pile 213, which is relatively labor-saving during operation. By adjusting the meshing of the wheel and the guide rail, the saw blade 112 can be easily cut. The adjustment wheel advances on the guide rail at a more stable speed and has a higher cutting efficiency. When cutting the pipe pile 213, the cross-sections at the first and second poles of the pipe pile 213 are thicker than those at other positions. When the adjustment wheel is at the first and second poles of the pipe pile 213, due to the reduction in the number of teeth of the adjustment wheel, the adjustment wheel advances intermittently in the guide rail, and the saw blade 112 cuts the pipe pile 213 intermittently, which can reduce the probability of the saw blade 112 getting stuck during the cutting process and increase the kinetic energy of the saw blade 112 when it contacts the pipe pile 213, thereby improving the cutting effect and efficiency.

[0031] In this embodiment, the fixing seat includes a first plate 100 and a second plate 101, and the first plate 100 and the second plate 101 are both L-shaped plates composed of two flat plates. The first plate 100 and the second plate 101 are each provided with two, and the two first plates 100 and the two second plates 101 are alternately distributed around the circumference of the pipe pile 213, and the two first plates 100 and the two second plates 101 are enclosed into a rectangular frame, and the angles of the two sides of the two first plates 100 and the two second plates 101 are respectively the four vertices of the rectangle, and the two angles on the two first plates 100 are opposite angles, and the two angles on the two second plates 101 are opposite angles, and the guide rail is arranged around the outer circumference of the rectangular frame; the adjacent first plates 100 and the second plates 101 are slidably connected, and the first plates 100 The first plate 100 is connected to a second plate 101 adjacent to one side thereof for relative sliding along a first direction, and the first plate 100 is connected to a second plate 101 adjacent to the other side thereof for relative sliding along a second direction, and the first direction and the second direction are respectively parallel to the cross section of the pipe pile 213 and perpendicular to each other, and two hydraulic cylinders 102 are fixedly installed on each first plate 100, one of the hydraulic cylinders 102 is telescopically extended along the first direction and is fixedly connected to a corresponding second plate 101, and the other hydraulic cylinder 102 is telescopically extended along the second direction and is fixedly connected to another corresponding second plate 101, and the two first plates 100 and the two second plates 101 can be close to each other and clamp the pipe pile 213 under the action of the hydraulic cylinders 102, so that the guide rail is stably arranged relative to the cross section of the pipe pile 213.

[0032] In this embodiment, the connection positions of the two flat plates constituting the first plate 100 and the connection positions of the two flat plates constituting the second plate 101 are both provided with chamfers, and the movement of the adjusting wheel on the first plate 100 and the second plate 101 through the guide rail is smoother, and the cutting process is more convenient.

[0033] In this embodiment, the adjusting wheel includes a rotating column 113, a guide column 114 and a bevel gear 115. The rotating column 113 is rotatably arranged, and a chamfer is arranged on the end surface of the rotating column 113, and a plurality of tooth blocks 116 are arranged on the chamfer. The plurality of tooth blocks 116 are evenly arranged around the axis of the rotating column 113. The same chamfer is arranged on both end surfaces of the rotating column 113, and the same plurality of tooth blocks 116 are arranged on each chamfer. A slide groove 117 is opened on both end surfaces of the rotating column 113, and the slide groove 117 is arranged along the axis of the rotating column 113. The rotating column 113 extends in the axial direction, and a first spring 118 is fixedly installed in each slide groove 117, and the first spring 118 is retracted along the axial direction of the rotating column 113; there are two guide pillars 114, and each guide pillar 114 is slidably arranged in one of the slide grooves 117 along the axial direction of the rotating column 113, and each guide pillar 114 is fixedly connected to the corresponding first spring 118; the bevel gear 115 is slidably arranged on the rotating column 113 along the axial direction of the rotating column 113, and the bevel gear 115 is 15 is provided with two, each bevel gear 115 is fixedly connected to a guide column 114, the bevel gear 115 is covered on the end surface and chamfer of the rotating column 113, the bevel gear 115 is coaxial with the rotating column 113, and the side of the bevel gear 115 provided with teeth faces away from the rotating column 113, the tooth block 116 penetrates the conical surface of the bevel gear 115 along the axial direction of the rotating column 113 and is slidably connected to the bevel gear 115, each bevel gear 115 corresponds to an end surface of the rotating column 113, and each bevel gear 115 is provided with a guide column 114. A plurality of through grooves 119 are provided on the conical surface of the bevel gear 115, each through groove 119 is located between two adjacent teeth on the bevel gear 115, each tooth block 116 is slidably disposed in a through groove 119 of the corresponding bevel gear 115, and the rotation of the rotating column 113 can drive the bevel gear 115 to rotate through the cooperation between the tooth block 116 and the through groove 119; each tooth block 116 is located between two adjacent teeth on the bevel gear 115, and the tooth block 116 can increase the number of teeth on the corresponding bevel gear 115.

[0034] In this embodiment, the guide rail is wound around the first plate 100 and the second plate 101 on a side away from the pipe pile 213, and the guide rail includes two first sections 103 and two second sections 104, the two first sections 103 are respectively located at the first pole and the second pole of the pipe column cross section, and each second section 104 is connected to one end of the two first sections 103; the first section 103 includes a first surface and two second surfaces, the first surface is located between the two second surfaces, and the first surface is respectively connected to the two second surfaces, the first surface is parallel to the axis extension direction of the pipe pile 213, and the two second surfaces are mutually connected from the side connected to the first surface to the side away from the first surface. The bevel gear 115 is able to contact the second surface, and when the bevel gear 115 contacts the second surface, tooth grooves are provided on the two second surfaces, and the teeth on the bevel gear 115 can engage with the tooth grooves. The side of the tooth block 116 away from the rotating column 113 is located on the same surface as the tooth root of the bevel gear 115, that is, the bevel gear 115 is away from the rotating column 113 under the action of the corresponding first spring 118, and the tooth block 116 retracts into the through groove 119. At this time, the tooth pitch of the bevel gear 115 is the largest, the number of teeth is the least, and the number of times the bevel gear 115 engages with the guide rail is reduced.

[0035] Each second section 104 includes a third surface and two fourth surfaces, the third surface is connected to the two first surfaces respectively, the third surface is located between the two fourth surfaces, and the third surface is connected to the two fourth surfaces respectively, the two fourth surfaces are away from each other from the side connected to the third surface to the side away from the third surface, and each fourth surface gradually moves away from the pipe pile 213 from the side connected to the third surface, the bevel gear 115 can contact the fourth surface, and when the bevel gear 115 contacts the fourth surface, the two fourth surfaces are also provided with tooth grooves, the teeth and tooth blocks 116 on the bevel gear 115 can be engaged with the tooth grooves on the fourth surface, and the side surface of the tooth block 116 away from the rotating column 113 is located on the same surface as the teeth on the bevel gear 115, that is, the bevel gear 115 has the smallest tooth pitch and the largest number of teeth, and the number of times the bevel gear 115 meshes with the guide rail increases; in the same time period and when the rotation speed of the bevel gear 115 is the same, the distance moved by the bevel gear 115 on the fourth surface is greater than the distance moved by the bevel gear 115 on the first surface.

[0036] In this embodiment, the transmission assembly includes a fixed cylinder 201, a sleeve 202, a transmission belt 203, a deceleration part and a tensioning part. The fixed cylinder 201 is sleeved on the output shaft of the motor 111, and the fixed cylinder 201 is fixedly connected to the mounting plate 110. The fixed cylinder 201 is provided with a handle 204 for the operator to hold; the sleeve 202 is slidably arranged on the fixed cylinder 201 along the radial direction of the output shaft of the motor 111, and the axis of the sleeve 202 is along the axial direction of the output shaft of the motor 111. The rotating column 113 is sleeved in the sleeve 202, and the rotating column 113 is rotatably connected with the sleeve 202. The transmission belt 203 is wound around the rotating column 113 and the output shaft of the motor 111. The deceleration part is used to transfer the kinetic energy of the motor 111 to the rotating column 113 through the transmission belt 203; the tensioning part is used to adjust the tensioning degree of the transmission belt 203 according to the distance between the sleeve 202 and the output shaft of the motor 111 and can be used to position the saw blade 112 when it contacts the pipe pile 213.

[0037] In this embodiment, the speed reduction unit includes a friction ring 205 and a plurality of rotating wheels 206. The friction ring 205 is sleeved on the output shaft of the motor 111, and the friction ring 205 is rotatably connected to the output shaft of the motor 111. The plurality of rotating wheels 206 are rotatably arranged on the end surface of the friction ring 205. The rotation axis of the rotating wheel 206 extends along the axial direction of the friction ring 205. The plurality of rotating wheels 206 are evenly arranged around the axis of the friction ring 205, and each rotating wheel 206 is respectively in contact with the inner wall of the fixed cylinder 201 and the output shaft of the motor 111. The friction ring 205 is supported on the inner side of the transmission belt 203. As the motor 111 rotates, the motor 111 drives the plurality of rotating wheels 206 to rotate around its own axis. The rotating rotating wheels 206 roll on the inner wall of the fixed cylinder 201 through contact with the fixed cylinder 201, thereby driving the friction ring 205 to rotate at a low speed, thereby enabling the rotating column 113 to move slowly in the guide rail.

[0038] In this embodiment, the tensioning part includes a first telescopic rod 207, a second telescopic rod 208, a bracket 209 and a guide wheel 210. One end of the first telescopic rod 207 and the second telescopic rod 208 are fixedly installed on the fixed cylinder 201. The first telescopic rod 207 and the second telescopic rod 208 are located on both sides of the fixed cylinder 201 and are both telescopic in the radial direction of the fixed cylinder 201. One end of the first telescopic rod 207 away from the fixed cylinder 201 is fixedly connected to the sleeve 202; the bracket 209 is fixedly connected to one end of the second telescopic rod 208 away from the fixed cylinder 201. The guide wheel 210 is rotatably arranged on the bracket 209, and the rotation axis of the guide wheel 210 extends along the extension direction of the axis of the rotating column 113. The guide wheel 210 is supported on the inner side of the transmission belt 203. Under the action of the first telescopic rod 207 and the second telescopic rod 208 on the reverse stretching of the transmission belt 203, the transmission belt 203 is always in contact with the friction ring 205, and the transmission belt 203 can rotate under the drive of the friction ring 205.

[0039] In this embodiment, a second spring is provided in the first telescopic rod 207, and a third spring is provided in the second telescopic rod 208, and the elastic coefficient of the second spring is greater than the elastic coefficient of the third spring; under normal conditions, the first telescopic rod 207 is in a natural state, the second telescopic rod 208 is in a retracted state, and under normal conditions, the distance between the bevel gear 115 and the axis of the saw blade 112 is greater than the radius of the saw blade 112. When the bevel gear 115 contacts the guide rail, there is still a distance between the saw blade 112 and the pipe pile 213. When the saw blade 112 contacts the pipe pile 213, the saw blade 112 will have a thrust away from the pipe pile 213, which is convenient for the operator to pull out the saw blade 112 and improves safety during operation.

[0040] In this embodiment, two rotating rods 211 are rotatably provided on the sleeve 202, and the rotation axes of the two rotating rods 211 extend along the extension direction of the axis of the sleeve 202, and the two rotating rods 211 are located on the front and rear sides of the sleeve 202 in the forward direction on the track, and a roller 212 is rotatably provided at one end of each rotating rod 211 away from the sleeve 202, and the rotation axis of the roller 212 extends along the extension direction of the rotation axis of the rotating rod 211, and each roller 212 can be rollingly connected with the first surface and the third surface, and a torsion spring is provided between each rotating rod 211 and the sleeve 202, and the spacing between the ends of the two rotating rods 211 away from the sleeve 202 is greater than the distance between their rotation axes. The saw blade 112 will generate a torque when rotating, and the torsion force of the torsion spring can offset part of the torque, thereby reducing the work intensity of the operator.

[0041] The working principle of a hydraulic pile cutter provided in the above embodiment is as follows:

[0042] First, a cutting line is drawn on the pipe pile 213, and then a preset groove is cut along the cutting line to penetrate the wall of the pipe pile 213. Next, the fixing seat is set on the pipe pile 213, and then the hydraulic cylinder 102 is controlled to contract. The hydraulic cylinder 102 drives the two first plates 100 and the two second plates 101 to approach each other to clamp the pipe pile 213. During the clamping process, the positions of the first plate 100 and the second plate 101 are adjusted so that the plane where the guide rail is located after the first plate 100 and the second plate 101 clamp the pipe pile 213 is parallel to the cross section of the pipe pile 213, and the two first sections 103 in the guide rail are located at the first and second poles of the cross section of the pipe pile 213, and the preset groove is located at the second section 104 of the guide rail.

[0043] Then the operator holds the handle 204 and starts the motor 111. The motor 111 drives the saw blade 112 to rotate. At the same time, the motor 111 drives multiple rotating wheels 206 to rotate through its output shaft. The rotating wheels 206 rotate and drive the friction ring 205 to rotate around the output shaft of the motor 111 through the contact with the inner wall of the fixed cylinder 201. The friction ring 205 rotates and drives the rotating column 113 to rotate through the transmission belt 203. The rotating column 113 rotates and drives the bevel gear 115 to rotate through the tooth block 116. Then the operator places the rotating column 113 into the second section 104 of the guide rail, so that the bevel gear 115 contacts the fourth surface. At the same time, the two rollers 212 contact the third surface. After the bevel gear 115 contacts the fourth surface, Continue to push the handle 204. Under the guidance of the fourth surface, the bevel gear 115 pushes the guide column 114 to slide in the slide groove 117 and compresses the first spring 118. The bevel gear 115 approaches the rotating column 113. The tooth block 116 extends from the through groove 119 on the bevel gear 115 and engages with the tooth groove on the fourth surface. Continue to push the saw blade 112 through the handle 204. The first telescopic rod 207 is compressed. The second telescopic rod 208 extends under the action of the third spring. The second telescopic rod 208 pushes the bracket 209 and the guide wheel 210 to move away from the fixed cylinder 201, so that the transmission belt 203 is always taut. Finally, the saw blade 112 enters the preset groove and penetrates the wall of the pipe pile 213.

[0044] Driven by the first motor 111, the rotating column 113 drives the bevel gear 115 to rotate and advance in the second section 104 of the guide rail. When the distance between the outer ring and the inner ring of the pipe pile 213 at the cross-sectional position increases greatly, the rotating column 113 drives the bevel gear 115 to enter the first section 103 of the guide rail, and then the bevel gear 115 moves away from the rotating column 113 under the action of the first spring 118. The two bevel gears 115 are respectively engaged with the tooth grooves on the two second surfaces, and the tooth block 116 is not connected with the tooth grooves on the second surface at this time (if the two bevel gears 115 are not on the same horizontal plane, the elastic coefficient of the first spring 118 corresponding to the lower bevel gear 115 is greater than the elastic coefficient of the first spring 118 above it, so that the rotating column 113 In the first section 103, it is located between the two second surfaces, and the tooth block 116 is not engaged with the tooth grooves on the two second surfaces). Each time the bevel gear 115 engages with a tooth groove on the second surface to drive the saw blade 112 forward, the bevel gear 115 will idle for a period of time. During this period, the saw blade 112 will no longer advance until the bevel gear 115 engages with a tooth groove on the second surface again. During this process, after the saw blade 112 cuts a portion of the pipe pile 213, the resistance it encounters will be reduced to a minimum, thereby preventing the saw blade 112 from being constantly subjected to large resistance and reducing its rotation speed, thereby reducing cutting efficiency. At the same time, it can also prevent the saw blade 112 from getting stuck. At the same time, during the cutting process, the operator does not need to control the cutting progress and adjust the cutting amount, thereby reducing the difficulty of operation.

[0045] When the rotating column 113 rotates one circle in the guide rail, the cutting is completed.

[0046] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A hydraulic pile cutter for hollow piles, used for oblique cutting of hollow piles, so that the angle between the cross section of the pile and the axis of the pile is less than ninety degrees, characterized in that: include: A fixed seat and a cutting mechanism, wherein the fixed seat is sleeved on the pipe pile, and a guide rail is arranged on the circumference of the fixed seat, and the guide rail is evenly distributed around the axis of the pipe pile, and the plane where the guide rail is located is parallel to the cross section of the pipe pile, and the cross section of the pipe pile is an elliptical ring, and the cross section of the pipe pile has a first pole and a second pole, and the first pole and the second pole are located at two ends of the outer ring major diameter of the elliptical ring and are symmetrical about the center of the elliptical ring; the cutting mechanism comprises a mounting plate, a motor, a saw blade, a moving assembly and a transmission assembly, the motor is fixedly mounted on the mounting plate, the saw blade is fixedly mounted on the output shaft of the motor, and the axis of the saw blade is perpendicular to the cross section of the pipe pile, and the moving assembly comprises an adjusting wheel, and a plurality of retractable teeth are arranged on the adjusting wheel, and the adjusting wheel can mesh with the guide rail through the teeth and drive the mounting plate to rotate around the pipe pile along the guide rail; the connecting line between the axis of the adjusting wheel and the axis of the saw blade extends along the radial direction of the pipe pile; when the adjusting wheel is located at the first pole and the second pole, half of the teeth of the adjusting wheel are retracted; the transmission assembly is used to connect the motor and the adjusting wheel, so that the rotation of the motor can drive the rotation of the adjusting wheel.

2. A hydraulic pipe pile cutter according to claim 1, characterized in that: The fixing seat includes a first plate and a second plate, both of which are L-shaped plates composed of two flat plates. Two first plates and two second plates are provided, and the two first plates and the two second plates are alternately distributed around the circumference of the pipe pile. Adjacent first plates and second plates are slidably connected, the first plate and a second plate adjacent to one side thereof are relatively slidably connected along a first direction, and the first plate and a second plate adjacent to the other side thereof are relatively slidably connected along a second direction. Both the first direction and the second direction are parallel to the cross-section of the pipe pile and perpendicular to each other. Two hydraulic cylinders are fixedly installed on each first plate, one of which is telescopic in the first direction and fixedly connected to a corresponding second plate, and the other hydraulic cylinder is telescopic in the second direction and fixedly connected to the corresponding other second plate.

3. A hydraulic pipe pile cutter according to claim 2, characterized in that: A connecting position of two flat plates constituting the first plate and a connecting position of two flat plates constituting the second plate are both provided with chamfers.

4. A hydraulic pipe pile cutter according to claim 2, characterized in that: The adjusting wheel includes a rotating column and a bevel gear. The rotating column is rotatably arranged, and a chamfer is arranged on the end face of the rotating column, and a plurality of tooth blocks are arranged on the chamfer. The plurality of tooth blocks are evenly arranged around the axis of the rotating column. The bevel gear is slidably arranged on the rotating column along the axial direction of the rotating column. The bevel gear is covered on the end face and the chamfer of the rotating column. The bevel gear is coaxial with the rotating column, and a side of the bevel gear provided with teeth faces away from the rotating column. The tooth block penetrates the conical surface of the bevel gear along the axial direction of the rotating column and is slidably connected with the bevel gear. Each tooth block is located between two adjacent teeth on the bevel gear, and the tooth block can increase the number of teeth on the corresponding bevel gear.

5. A hydraulic pipe pile cutter according to claim 4, characterized in that: The guide rail is wound around the first plate and the second plate on a surface away from the pipe pile, the guide rail includes two first sections and two second sections, the two first sections are respectively located at the first pole and the second pole of the pipe column cross section, and each second section is connected to one end of the two first sections; the first section includes a first surface and two second surfaces, the first surface is located between the two second surfaces, and the first surface is respectively connected to the two second surfaces, the two second surfaces are away from each other from the side connected to the first surface to the side away from the first surface, and each second surface gradually moves away from the pipe pile from the side connected to the first surface, the bevel gear can contact the second surface, and when the bevel gear When the wheel contacts the second surface, the side of the tooth block away from the rotating column is located on the same plane as the tooth root of the bevel gear; each second section includes a third surface and two fourth surfaces, the third surface is respectively connected to the two first surfaces, the third surface is located between the two fourth surfaces, and the third surface is respectively connected to the two fourth surfaces, the two fourth surfaces are away from each other from the side connected to the third surface to the side away from the third surface, and each fourth surface gradually moves away from the pipe pile from the side connected to the third surface, the bevel gear can contact the fourth surface, and when the bevel gear contacts the fourth surface, the side of the tooth block away from the rotating column is located on the same plane as the teeth on the bevel gear.

6. A hydraulic pipe pile cutter according to claim 4, characterized in that: The transmission assembly includes a fixed cylinder, a sleeve, a transmission belt, a speed reduction portion and a tensioning portion. The fixed cylinder is sleeved on the output shaft of the motor and is fixedly connected to the mounting plate. The sleeve is slidably arranged on the fixed cylinder along the radial direction of the output shaft of the motor, and the axis of the sleeve extends along the axial direction of the output shaft of the motor. The rotating column is sleeved in the sleeve, and the rotating column and the sleeve are rotatably connected. The transmission belt is wound around the rotating column and the output shaft of the motor. The speed reduction portion is used to transfer the kinetic energy of the motor to the rotating column through the transmission belt; the tensioning portion is used to adjust the tension of the transmission belt according to the distance between the sleeve and the output shaft of the motor and can be used to position the saw blade when it contacts the pipe pile.

7. A hydraulic pipe pile cutter according to claim 6, characterized in that: The speed reduction unit includes a friction ring and a plurality of rotating wheels. The friction ring is sleeved on the output shaft of the motor and is rotationally connected to the output shaft of the motor. The plurality of rotating wheels are rotationally arranged on the end face of the friction ring. The rotation axis of the rotating wheel extends along the axial direction of the friction ring. The plurality of rotating wheels are evenly arranged around the axis of the friction ring, and each rotating wheel is respectively in contact with the inner wall of the fixed cylinder and the output shaft of the motor, and the friction ring is supported on the inner side of the transmission belt. As the motor rotates, the motor drives the plurality of rotating wheels to rotate around its own axis. The rotating rotating wheels roll on the inner wall of the fixed cylinder through contact with the fixed cylinder, thereby driving the friction ring to rotate at a low speed, thereby enabling the rotating column to move slowly in the guide rail.

8. The hydraulic pipe pile cutter according to claim 6, characterized in that: The tensioning part includes a first telescopic rod, a second telescopic rod, a bracket and a guide wheel. One ends of the first telescopic rod and the second telescopic rod are fixedly mounted on the fixed cylinder. The first telescopic rod and the second telescopic rod are located on both sides of the fixed cylinder and are both telescopic in the radial direction of the fixed cylinder. One end of the first telescopic rod away from the fixed cylinder is fixedly connected to the sleeve; the bracket is fixedly connected to one end of the second telescopic rod away from the fixed cylinder, the guide wheel is rotatably arranged on the bracket, and the rotation axis of the guide wheel extends along the extension direction of the axis of the rotating column, and the guide wheel is supported on the inner side of the transmission belt.

9. A hydraulic pipe pile cutter according to claim 8, characterized in that: A second spring is provided in the first telescopic rod, a third spring is provided in the second telescopic rod, and the elastic coefficient of the second spring is greater than the elastic coefficient of the third spring; under normal conditions, the first telescopic rod is in a natural state, the second telescopic rod is in a contracted state, and under normal conditions, the distance between the bevel gear and the axis of the saw blade is greater than the radius of the saw blade.

10. The hydraulic pipe pile cutter according to claim 6, characterized in that: Two rotating rods are rotatably arranged on the sleeve, and the rotating axes of the two rotating rods extend along the extending direction of the axis of the sleeve. The two rotating rods are located at the front and rear sides of the sleeve in the advancing direction on the track, and a torsion spring is arranged between each rotating rod and the sleeve.

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