Variable cross-section prefabricated part top surface chamfering molding machine

Abstract

The utility model discloses a chamfering molding machine for a top surface of a variable cross-section prefabricated part. The chamfering molding machine comprises a frame body and a chamfering molding piece, the chamfering modeling piece comprises a driving shaft, a driving source and a chamfering roller; wherein the driving shaft is provided with a convex ring between the pair of chamfering rollers, an adjusting rotation stopping piece is arranged between the chamfering rollers and the convex ring, the outer wall of the driving shaft is partially sleeved with the adjusting rotation stopping piece, and locking / unlocking of the chamfering rollers and the driving shaft can be achieved through the adjusting rotation stopping piece; in the locking state, the chamfering rollers rotate in the circumferential direction, in the unlocking state, the driving source can drive the pair of chamfering rollers to rotate in the circumferential direction of the driving shaft so as to achieve axial movement, and the axial movement directions of the pair of chamfering rollers are opposite. The variable cross-section top surface of the prefabricated part is chamfered through the variable cross-section prefabricated part top surface chamfering molding machine, so that the variable cross-section prefabricated part is prevented from generating stress concentration at the side edge of the top surface.

Description

Technical Field

[0001] The utility model relates to the technical field of production of variable-section prefabricated components, in particular to a top surface chamfering molding machine for variable-section prefabricated components. Background Art

[0002] Precast concrete components refer to prefabricated concrete components that have been manufactured before installation at the construction site. Common ones include precast concrete slabs, precast concrete beams, precast concrete columns, and precast concrete piles for foundation treatment. The molding steps of precast components usually include placing the steel skeleton into the molding cavity of the precast component production mold, injecting concrete slurry into the molding cavity for distribution, and then vibrating and smoothing the concrete; however, the top side edges of the precast components formed by the above operations are right-angle structures. During the transportation, stacking and construction of the precast components, the side edges are very likely to collide with other objects, causing damage to the precast components and affecting the overall strength of the precast components.

[0003] The prior art provides a chamfering mechanism, which includes a roller, the roller includes at least one roller unit, each roller unit includes a roller body and two chamfering forming parts arranged at both ends of the roller body; the chamfering structure is formed on both sides of the top surface of the prefabricated component by rolling the chamfering forming parts to avoid the top surface side edges of the prefabricated component from being damaged by force. Due to actual construction requirements, some prefabricated components are variable-section prefabricated components, and the chamfering mechanism provided by the prior art cannot meet the requirements for chamfering the side edges of the variable-section prefabricated components. Therefore, it is urgent to develop a chamfering mechanism to achieve the purpose of chamfering the side edges of the variable-section prefabricated components. Utility Model Content

[0004] The utility model aims to provide a top surface chamfering molding machine for variable-section prefabricated components, so as to solve the problem that the existing chamfering mechanism cannot chamfer the side edges of the variable-section prefabricated components.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A machine for chamfering the top surface of a variable-section prefabricated component comprises a frame and a chamfering molding part; the chamfering molding part comprises a driving shaft rotatably mounted on the frame, a driving source mounted on the frame and having an output end connected to the driving shaft, and a pair of chamfering rollers mounted on the driving shaft and having chamfering molding surfaces facing away from each other; wherein, a convex ring is provided on the driving shaft between the pair of chamfering rollers, an adjustment stop is provided between the chamfering roller and the convex ring, the adjustment stop is partially mounted on the outer wall of the driving shaft, and the adjustment stop can realize locking / unlocking of the chamfering roller and the driving shaft; in a locked state, the chamfering roller rotates circumferentially, and in an unlocked state, the driving source can drive the pair of chamfering rollers to rotate circumferentially along the driving shaft to realize axial movement, and the axial movement directions of the pair of chamfering rollers are opposite.

[0007] Preferably, the adjustment anti-rotation member comprises an anti-rotation sleeve which is sleeved on the drive shaft and limits the circumferential rotation of the chamfering roller, a locker which brakes the anti-rotation sleeve, and a limit ring which is installed on the drive shaft and limits the axial movement of the anti-rotation sleeve; the locker can lock / unlock the anti-rotation sleeve; in the locked state, the chamfering roller and the drive shaft rotate synchronously in the circumferential direction;

[0008] Alternatively, the adjustment anti-rotation part includes an anti-rotation sleeve which is mounted on the drive shaft and limits the circumferential rotation of the chamfering roller, and a locker which brakes the anti-rotation sleeve; the chamfering roller is installed on the drive shaft through the anti-rotation sleeve, and the locker can lock / unlock the anti-rotation sleeve; in the locked state, the chamfering roller rotates circumferentially synchronously with the drive shaft, and in the unlocked state, the driving source can drive a pair of the chamfering rollers to move axially through the anti-rotation sleeve.

[0009] Preferably, the chamfering roller is provided with a stop hole, and the stop hole is conformally matched with the stop sleeve.

[0010] Preferably, the hole wall of the anti-rotation hole and the outer wall of the anti-rotation sleeve are both regular polygonal force-bearing surfaces; or, the hole wall of the anti-rotation hole and the outer wall of the anti-rotation sleeve are both non-circular force-bearing surfaces.

[0011] Preferably, the locker is installed on one of the convex ring and the anti-rotation sleeve, and the other one is provided with at least one locking hole corresponding to the locker; the locker can be partially inserted into the locking hole to lock the anti-rotation sleeve, and the locker can be withdrawn from the locking hole to unlock the anti-rotation sleeve.

[0012] Preferably, the variable-section prefabricated component top surface chamfering molding machine also includes a controller, which is electrically connected to the locker and the driving source; the controller can control the locker to partially insert into the locking hole to lock the anti-rotation sleeve, and the controller can control the locker to withdraw from the locking hole to unlock the anti-rotation sleeve.

[0013] Preferably, the variable-section prefabricated component top surface chamfering molding machine also includes a monitoring device, which is electrically connected to the controller; wherein the monitoring device is installed on the frame, the monitoring device monitors the change in the side mold width, and outputs a corresponding signal to the controller, and the controller controls the lock to perform locking / unlocking; or, the monitoring device is connected to a driving source, the monitoring device monitors the output of the driving source to monitor the travel amount of the chamfering roller, and outputs a corresponding signal to the controller, and the controller controls the lock to perform locking / unlocking.

[0014] Preferably, the revolving outer contour generatrix of the chamfered molding surface includes at least one oblique line segment; and / or, the revolving outer contour generatrix of the chamfered molding surface includes at least one circular arc segment; and / or, the chamfering roller also includes a smoothing surface extending outward along the chamfered molding surface, and the outer surface of the convex ring is axially flush with the smoothing surface; and / or, the driving shaft is a ball screw, and the spiral directions of the ball screw located at both ends of the convex ring are opposite; and / or, a counterweight is installed on the frame on the other side of the driving source.

[0015] Preferably, the frame is provided with a connecting arm, and an external connection portion is provided at one end of the connecting arm away from the frame; alternatively, the variable-section prefabricated component top surface chamfering molding machine also includes a frame, a lifting component installed on the frame and used to adjust the height position of the frame; the lifting component includes a lifting drive installed on the frame and a lifting beam movably installed on the frame, the frame is installed on the lifting beam, and the output end of the lifting drive is connected to the lifting beam.

[0016] Preferably, a longitudinal movement mechanism is provided at the bottom of the frame; the longitudinal movement mechanism includes a walking wheel and a longitudinal movement drive for driving the walking wheel; and / or the chamfering roller is movably installed on the lifting beam, and the lifting beam is provided with a transverse movement mechanism for adjusting the transverse position of the chamfering roller.

[0017] Compared with the prior art, the utility model has the beneficial effect that the variable-section top surface of the prefabricated component is chamfered by the variable-section prefabricated component top surface chamfering molding machine, thereby avoiding stress concentration at the side edges of the top surface of the variable-section prefabricated component. Before the chamfering operation, a pair of chamfering rollers arranged back to back are respectively located in two molds and the chamfering molding surfaces of the chamfering rollers are at least partially immersed in the molds; during the chamfering operation, the chamfering roller and the drive shaft are locked by adjusting the anti-rotation piece. In the locked state, the chamfering roller rotates circumferentially to perform a chamfering operation on the top surface side edges of a section of a prefabricated component with a variable cross-section; when the chamfering roller runs to the section change of the prefabricated component, the chamfering roller and the drive shaft are unlocked by adjusting the anti-rotation piece. In the unlocked state, the drive source can drive a pair of chamfering rollers to rotate circumferentially along the drive shaft to achieve axial movement, and the axial movement directions of the pair of chamfering rollers are opposite. When the chamfering rollers move axially to another section, the above-mentioned locking operation and chamfering operation are repeated, thereby achieving the chamfering operation on the top surface side edges of another section of the prefabricated component with a variable cross-section, and then achieving the chamfering of different sections of the prefabricated component by the chamfering roller, thereby improving the versatility and the chamfering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a variable cross-section prefabricated component top surface chamfering molding machine disclosed in an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of another variable-section prefabricated component top surface chamfering molding machine disclosed in an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a partially exploded structure of a chamfered molding part and an adjustment anti-rotation part disclosed in an embodiment of the utility model;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0022] Figure 5 It is a structural schematic diagram of another variable-section prefabricated component top surface chamfering molding machine disclosed in an embodiment of the utility model;

[0023] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0024] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of part B.

[0025] In the figure: 1. frame; 2. chamfered molding part; 21. driving shaft; 211. convex ring; 22. driving source; 23. chamfering roller; 231. chamfered molding surface; 232. smoothing surface; 3. adjusting anti-rotation part; 31. anti-rotation sleeve; 32. locking device; 33. limiting ring; 34. anti-rotation hole; 35. locking hole; 4. monitoring device; 5. counterweight; 6. connecting arm; 7. frame; 71. lifting drive; 72. lifting beam; 8. longitudinal movement mechanism; 9. transverse movement mechanism. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0028] Variable-section prefabricated components can be variable-section prefabricated panels, variable-section prefabricated walls, variable-section prefabricated columns, variable-section prefabricated piles, etc. The embodiment of the utility model is described in detail using variable-section prefabricated square piles as an example, wherein a variable-section prefabricated component top surface chamfering molding machine is used to adopt a mold group, the mold group includes a plurality of prefabricated square pile molds (hereinafter referred to as molds) placed side by side, and the side molds of two adjacent molds are fitted together or share a side mold; the upper end of the mold is open and the upper end surface of the mold is flush with the upper end surface of the prefabricated square pile, and the mold has large mold cavity sections and small mold cavity sections alternately arranged in the longitudinal direction, the large mold cavity section is used to form the large diameter section of the prefabricated square pile, and the small mold cavity section is used to form the small diameter section of the prefabricated square pile; the embodiment of the utility model defines the length direction of the mold as the longitudinal direction, the width direction as the transverse direction, and the height direction as the vertical direction.

[0029] Embodiment 1

[0030] like Figure 1As shown, the variable-section prefabricated component top surface chamfering molding machine provided in this embodiment includes a frame 1 and a chamfering molding part 2; the chamfering molding part 2 includes a driving shaft 21 rotatably mounted on the frame 1, a driving source 22 mounted on the frame 1 and connected to the driving shaft 21 at the output end, and a pair of chamfering rollers 23 mounted on the driving shaft 21 and with the chamfering molding surfaces 231 arranged back to back; wherein, the driving shaft 21 is provided with a convex ring 211 between the pair of chamfering rollers 23, and an adjustment stopper 3 is provided between the chamfering roller 23 and the convex ring 211, and the adjustment stopper 3 is partially mounted on the outer wall of the driving shaft 21, and the adjustment stopper 3 can realize the locking / unlocking of the chamfering roller 23 and the driving shaft 21; in the locked state, the chamfering roller 23 rotates circumferentially, and in the unlocked state, the driving source 22 can drive the pair of chamfering rollers 23 to rotate circumferentially along the driving shaft 21 to realize axial movement, and the axial movement directions of the pair of chamfering rollers 23 are opposite. The driving source 22 is preferably a rotating motor. Of course, the driving source 22 may also be other structures, without specific limitation, as long as it can drive the driving shaft 21 to rotate.

[0031] Specifically, the variable-section top surface of the prefabricated component is chamfered by a variable-section prefabricated component top surface chamfering molding machine, thereby avoiding stress concentration at the top surface side edges of the variable-section prefabricated component. Before the chamfering operation, a pair of chamfering rollers 23 arranged back to back are respectively located in two molds and the chamfering molding surface 231 of the chamfering roller 23 is at least partially immersed in the mold; during the chamfering operation, the chamfering roller 23 and the drive shaft 21 are locked by adjusting the stopper 3. In the locked state, the chamfering roller 23 rotates circumferentially to chamfer the top surface side edges of a section (large diameter section or small diameter section) of the variable-section prefabricated component; when the chamfering roller 23 runs to the section where the prefabricated component crosses (transitions from a large mold cavity section to a small mold cavity section, or from a small mold cavity section to a large mold cavity section), the chamfering roller 23 and the drive shaft 21 are unlocked by adjusting the stopper 3. In the unlocked state, the drive source 22 can A pair of chamfering rollers 23 are driven to rotate circumferentially along the drive shaft 21 to achieve axial movement, and the axial movement directions of the pair of chamfering rollers 23 are opposite. When the chamfering rollers 23 are axially moved to another section (small diameter section or large diameter section), the above locking operation and chamfering operation are repeated, so as to achieve the chamfering operation of the top surface side edge of another section of the variable-section prefabricated component, and then achieve the chamfering of different sections of the prefabricated component by the chamfering rollers 23, thereby improving the versatility and the chamfering efficiency; in addition, in the embodiment of the utility model, the axial position adjustment of the pair of chamfering rollers 23 is active, so the friction between the chamfering rollers 23 and the side mold is small, which reduces the walking resistance of the chamfering rollers 23 and improves the chamfering efficiency. It can be understood that when performing the chamfering operation, the convex ring 211 can be placed on the side mold of the adjacent mold, or it can be suspended on the side mold of the adjacent mold, and specific restrictions are made.

[0032] Furthermore, if Figure 3 and 4As shown, the adjustment anti-rotation member 3 includes an anti-rotation sleeve 31 which is mounted on the drive shaft 21 and limits the circumferential rotation of the chamfering roller 23, a locker 32 which brakes the anti-rotation sleeve 31, and a limit ring 33 which is installed on the drive shaft 21 and limits the axial movement of the anti-rotation sleeve 31; the locker 32 can lock / unlock the anti-rotation sleeve 31; in the locked state, the chamfering roller 23 and the drive shaft 21 rotate circumferentially synchronously.

[0033] Specifically, the limiting ring 33 and the convex ring 211 limit the anti-rotation sleeve 31 in two axial directions to limit the axial movement of the anti-rotation sleeve 31 along the drive shaft 21; before performing the chamfering operation, the locker 32 brakes the anti-rotation sleeve 31 to lock the anti-rotation sleeve 31 and the drive shaft 21, thereby locking the chamfering roller 23 and the drive shaft 21; at this time, the anti-rotation sleeve 31 is connected to the drive shaft 21 as a whole, and since the anti-rotation sleeve 31 limits the circumferential rotation of the chamfering roller 23, the chamfering roller 23 and the anti-rotation sleeve 31 can rotate synchronously with the drive shaft 21 to perform the chamfering operation. It can be understood that when performing the chamfering operation, During operation, the rotation of the chamfering roller 23 can be driven by the driving source 22, or it can be rotated by the friction between the chamfering roller 23 and the variable-section prefabricated square pile; in addition, the locker 32 releases the braking anti-rotation sleeve 31 to achieve the unlocking of the anti-rotation sleeve 31 and the driving shaft 21, thereby achieving the unlocking of the chamfering roller 23 and the driving shaft 21. At this time, the driving source 22 drives the driving shaft 21 to rotate, thereby driving a pair of chamfering rollers 23 to rotate circumferentially along the driving shaft 21 to achieve axial movement, and the axial movement directions of the pair of chamfering rollers 23 are opposite to adapt to the changes in the width of the side mold. At this time, the anti-rotation sleeve 31 rotates circumferentially following the chamfering roller 23.

[0034] Furthermore, if Figure 3 As shown, the chamfering roller 23 is provided with a stop hole 34, and the stop hole 34 is conformally adapted to the stop sleeve 31, so that the chamfering roller 23 is limited from rotating circumferentially relative to the stop sleeve 31 through the stop hole 34 and the stop sleeve 31 conformally adapted to each other; specifically, the hole wall of the stop hole 34 and the outer wall of the stop sleeve 31 are both regular polygonal force-bearing surfaces; or, the hole wall of the stop hole 34 and the outer wall of the stop sleeve 31 are both non-circular force-bearing surfaces.

[0035] Furthermore, if Figure 3 and 4As shown, the locker 32 is installed on one of the convex ring 211 and the anti-rotation sleeve 31, and the other one is provided with at least one locking hole 35 corresponding to the locker 32; the locker 32 can be partially inserted into the locking hole 35 to lock the anti-rotation sleeve 31, and the locker 32 can withdraw from the locking hole 35 to unlock the anti-rotation sleeve 31; through the cooperation between the locking hole 35 and the locker 32, the locking and unlocking of the anti-rotation sleeve 31 and the drive shaft 21 are realized; wherein, when one locking hole 35 can realize the locking of the chamfering roller 23 in the large mold cavity section and the small mold cavity section, one locking hole 35 can be used, and when one locking hole 35 cannot meet the above requirements, more than two locking holes 35 can be set to cooperate with the locking of the chamfering roller 23 in the large mold cavity section and the small mold cavity section, and the setting distance between two adjacent locking holes 35 is calculated and determined according to the change in the thickness of the side mold, and is not limited here.

[0036] Furthermore, the revolved outer contour generatrix of the chamfered molding surface 231 includes at least one oblique line segment; the revolved outer contour generatrix of the chamfered molding surface 231 includes at least one arc segment; there is no restriction on the specific shape of the chamfered molding surface 231, and the chamfered molding surface 231 can be set to an inclined surface, an arc surface, or a combination of an inclined surface and an arc surface, which can be selected according to actual production needs.

[0037] Furthermore, if Figure 3 As shown, the chamfering roller 23 also includes a smoothing surface 232 extending outward along the chamfering molding surface 231, and the outer surface of the convex ring 211 is axially flush with the smoothing surface 232. When the convex ring 211 is placed on the side mold, since the outer surface of the convex ring 211 is axially flush with the smoothing surface 232, the bottom of the convex ring 211 is flush with the upper end surface of the mold, that is, the smoothing surface 232 of the chamfering roller 23 is flush with the upper surface of the variable-section prefabricated square pile. The smoothing surface 232 of the chamfering roller 23 can smooth the upper surface of the variable-section prefabricated square pile, and there is no need to adjust the vertical height of the chamfering roller 23. When the convex ring 211 is placed on the side mold, the chamfering roller 23 is exactly at the vertical height required for chamfering.

[0038] Furthermore, if Figure 1-4 As shown, the driving shaft 21 is a ball screw, and the spiral directions of the ball screws located at both ends of the convex ring 211 are opposite. In this embodiment, the chamfering roller 23 is drivingly connected to the ball screw.

[0039] Furthermore, if Figure 2 As shown, in order to ensure the balance of the frame 1 and the normal use of the two chamfering rollers 23, a counterweight 5 is installed on the other side of the frame 1 where the driving source 22 is installed.

[0040] Furthermore, if Figure 2As shown, the frame 1 is provided with a connecting arm 6, and an external connection part is provided at one end of the connecting arm 6 away from the frame 1. The relevant staff holds the external connection part and drives the frame 1 to move longitudinally through the external connection part. Preferably, an anti-slip structure is provided on the external connection part.

[0041] Embodiment 2

[0042] The same parts in this embodiment as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.

[0043] Compared with the first embodiment, the variable-section prefabricated component top surface chamfering molding machine provided in this embodiment also has the following different structural design: the adjustment anti-rotation part 3 includes an anti-rotation sleeve 31 which is mounted on the drive shaft 21 and limits the circumferential rotation of the chamfering roller 23, and a locker 32 which brakes the anti-rotation sleeve 31; the chamfering roller 23 is installed on the drive shaft 21 through the anti-rotation sleeve 31, and the locker 32 can lock / unlock the anti-rotation sleeve 31; in the locked state, the chamfering roller 23 rotates circumferentially synchronously with the drive shaft 21, and in the unlocked state, the drive source 22 can drive a pair of chamfering rollers 23 to move axially through the anti-rotation sleeve 31.

[0044] Specifically, before performing the chamfering operation, the locker 32 brakes the anti-rotation sleeve 31 to lock the anti-rotation sleeve 31 and the drive shaft 21, thereby locking the chamfering roller 23 and the drive shaft 21; at this time, the anti-rotation sleeve 31 is connected to the drive shaft 21 as a whole, and since the anti-rotation sleeve 31 limits the circumferential rotation of the chamfering roller 23, the chamfering roller 23 and the anti-rotation sleeve 31 can rotate synchronously with the drive shaft 21 to perform the chamfering operation; when performing the chamfering operation, the rotation of the chamfering roller 23 can be driven by the driving source 22, or by the friction rotation of the chamfering roller 23 and the variable-section prefabricated square pile; the locker 32 releases the brake anti-rotation sleeve 31 to unlock the anti-rotation sleeve 31 and the drive shaft 21, thereby unlocking the chamfering roller 23 and the drive shaft 21, at this time, the driving source 22 drives the drive shaft 21 to rotate, thereby driving a pair of chamfering rollers 23 to move axially through the axial movement of the anti-rotation sleeve 31, and the axial movement directions of the pair of chamfering rollers 23 are opposite to adapt to the change in the width of the side mold. In this embodiment, the chamfering roller 23 is connected to the ball screw by a screw transmission.

[0045] Embodiment 3

[0046] The same parts as those in the first and second embodiments of the present embodiment are given the same reference numerals, and the same text descriptions are omitted.

[0047] Compared with Example 1 and Example 2, the variable-section prefabricated component top surface chamfering molding machine provided in this embodiment also has the following different structural design: in order to improve the automation level of chamfering and improve the chamfering efficiency, the variable-section prefabricated component top surface chamfering molding machine also includes a controller, which electrically connects the locker 32 and the driving source 22; the controller can control the locker 32 to partially insert into the locking hole 35 to lock the anti-rotation sleeve 31, and the controller can control the locker 32 to withdraw from the locking hole 35 to unlock the anti-rotation sleeve 31.

[0048] Furthermore, if Figure 1 and Figure 2 As shown, in order to further improve the automation level of chamfering, the variable-section prefabricated component top surface chamfering molding machine also includes a monitoring device 4, which is electrically connected to the controller; wherein the monitoring device 4 is installed on the frame 1, and the monitoring device 4 monitors the change in the side mold width and outputs a corresponding signal to the controller, and the controller controls the lock 32 to perform locking / unlocking.

[0049] Specifically, the controller can control the locker 32 to perform an unlocking operation when the monitoring device 4 detects a change in the width of the side mold, and after unlocking, the controller controls the driving source 22 to work to drive the chamfering roller 23 to move axially, thereby achieving the purpose of adjusting the axial position of the chamfering roller 23; when the adjustment of the chamfering roller 23 is completed or the monitoring device 4 detects that the side mold is at a set width, the controller controls the locker 32 to perform a locking operation; and after locking, the controller can control the driving source 22 to work to drive the chamfering roller 23 to chamfer.

[0050] Embodiment 4

[0051] In this embodiment, the same parts as those in Embodiment 1, Embodiment 2, and Embodiment 3 are given the same figure marks, and the same text descriptions are omitted.

[0052] Compared with the first, second and third embodiments, the variable cross-section prefabricated component top surface chamfering molding machine provided in this embodiment has the following different structural designs: Figure 5As shown, the variable cross-section prefabricated component top chamfering molding machine also includes a frame 7, a lifting assembly installed on the frame 7 and used to adjust the height position of the frame 1; the lifting assembly includes a lifting drive 71 installed on the frame 7 and a lifting beam 72 movably installed on the frame 7, the frame 1 is installed on the lifting beam 72, and the output end of the lifting drive 71 is connected to the lifting beam 72. The lifting drive 71 is one of a hydraulic cylinder and a screw lift or a combination of both, and the lifting drive 71 is preferably a screw lift. The lifting drive 71 drives the lifting beam 72 to rise or fall. When chamfering the variable-section prefabricated square piles, the lifting drive 71 drives the lifting beam 72 to fall so that the chamfering molding surface 231 of the chamfering roller 23 is at least partially immersed in the mold. The frame 7 moves longitudinally to chamfer the variable-section prefabricated square piles. After chamfering the corners of the large-diameter section (or small-diameter section) of the variable-section prefabricated square piles, the lifting drive 71 drives the lifting beam 72 to fall (or rise). After the chamfering roller 23 enters the adjacent small-diameter section (or large-diameter section), the chamfering molding surface 231 of the chamfering roller 23 is at least partially immersed in the mold. The above operation is repeated to complete the chamfering of the small-diameter section (or large-diameter section) of the variable-section prefabricated square piles.

[0053] Furthermore, if Figure 5 As shown, a longitudinal movement mechanism 8 is provided at the bottom of the frame 7; the longitudinal movement mechanism 8 includes a running wheel and a longitudinal movement drive for driving the running wheel; the longitudinal movement drive is preferably a motor. The longitudinal movement drive drives the running wheel to rotate, thereby driving the frame 7 to move longitudinally along the mold.

[0054] Furthermore, the chamfering roller 23 is movably mounted on the lifting beam 72, and the lifting beam 72 is provided with a transverse movement mechanism 9 for adjusting the transverse position of the chamfering roller 23. The transverse movement mechanism 9 can adjust the transverse position of the lifting beam 72 to adapt to the transverse position of the mold; wherein, the specific structure of the transverse movement mechanism 9 is not limited.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

Claims

1. A variable cross-section prefabricated component top surface chamfering molding machine, characterized in that: It comprises a frame and a chamfering molding part; the chamfering molding part comprises a driving shaft rotatably mounted on the frame, a driving source mounted on the frame and having an output end connected to the driving shaft, and a pair of chamfering rollers mounted on the driving shaft and having chamfering molding surfaces facing away from each other; wherein, the driving shaft is provided with a convex ring between the pair of chamfering rollers, an adjustment stopper is provided between the chamfering roller and the convex ring, the adjustment stopper is partially mounted on the outer wall of the driving shaft, and the adjustment stopper can realize locking / unlocking of the chamfering roller and the driving shaft; in a locked state, the chamfering roller rotates circumferentially, and in an unlocked state, the driving source can drive the pair of chamfering rollers to rotate circumferentially along the driving shaft to realize axial movement, and the axial movement directions of the pair of chamfering rollers are opposite.

2. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 1, characterized in that: The adjustment anti-rotation member includes an anti-rotation sleeve which is mounted on the drive shaft and limits the circumferential rotation of the chamfering roller, a locker which brakes the anti-rotation sleeve, and a limit ring which is installed on the drive shaft and limits the axial movement of the anti-rotation sleeve; the locker can lock / unlock the anti-rotation sleeve; in the locked state, the chamfering roller and the drive shaft rotate synchronously in the circumferential direction; Alternatively, the adjustment anti-rotation part includes an anti-rotation sleeve which is mounted on the drive shaft and limits the circumferential rotation of the chamfering roller, and a locker which brakes the anti-rotation sleeve; the chamfering roller is installed on the drive shaft through the anti-rotation sleeve, and the locker can lock / unlock the anti-rotation sleeve; in the locked state, the chamfering roller rotates circumferentially synchronously with the drive shaft, and in the unlocked state, the driving source can drive a pair of the chamfering rollers to move axially through the anti-rotation sleeve.

3. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 2, characterized in that: The chamfering roller is provided with a stop hole, and the stop hole is conformally matched with the stop sleeve.

4. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 3, characterized in that: The hole wall of the anti-rotation hole and the outer wall of the anti-rotation sleeve are both regular polygonal force-bearing surfaces; Alternatively, the hole wall of the anti-rotation hole and the outer wall of the anti-rotation sleeve are both non-circular force-bearing surfaces.

5. The variable cross-section prefabricated component top surface chamfering molding machine according to any one of claims 2 to 4, characterized in that: The locker is installed on one of the convex ring and the anti-rotation sleeve, and the other one is provided with at least one locking hole corresponding to the locker; the locker can be partially inserted into the locking hole to lock the anti-rotation sleeve, and the locker can be withdrawn from the locking hole to unlock the anti-rotation sleeve.

6. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 5, characterized in that: The variable-section prefabricated component top surface chamfering molding machine also includes a controller, which is electrically connected to the locker and the driving source; the controller can control the locker to partially insert into the locking hole to lock the anti-rotation sleeve, and the controller can control the locker to withdraw from the locking hole to unlock the anti-rotation sleeve.

7. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 6, characterized in that: The variable-section prefabricated component top surface chamfering molding machine also includes a monitoring device, which is electrically connected to the controller; Wherein, the monitoring device is installed on the frame, the monitoring device monitors the change of the side mold width, and outputs a corresponding signal to the controller, and the controller controls the locker to perform locking / unlocking; Alternatively, the monitoring device is connected to a driving source, and the monitoring device monitors the output of the driving source to monitor the travel amount of the chamfering roller, and outputs a corresponding signal to the controller, and the controller controls the locker to perform locking / unlocking.

8. The variable cross-section prefabricated component top surface chamfering molding machine according to any one of claims 2-4, 6 or 7, characterized in that: The revolved outer contour generatrix of the chamfered molding surface includes at least one oblique line segment; And / or, the revolved outer contour generatrix of the chamfered molding surface includes at least one circular arc segment; And / or, the chamfering roller further comprises a smoothing surface extending outwardly along the chamfering profile surface, and the outer surface of the convex ring is axially flush with the smoothing surface; And / or, the driving shaft is a ball screw, and the spiral directions of the ball screws located at both ends of the convex ring are opposite; And / or, a counterweight is installed on the frame at the other side where the driving source is installed.

9. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 8, characterized in that: The frame is provided with a connecting arm, and an end of the connecting arm away from the frame is provided with an external connection portion; Alternatively, the variable-section prefabricated component top chamfering molding machine also includes a frame, a lifting component installed on the frame and used to adjust the height position of the frame; the lifting component includes a lifting drive installed on the frame and a lifting beam movably installed on the frame, the frame is installed on the lifting beam, and the output end of the lifting drive is connected to the lifting beam.

10. The variable cross-section prefabricated component top surface chamfering molding machine according to claim 9, characterized in that: A longitudinal movement mechanism is provided at the bottom of the frame; the longitudinal movement mechanism comprises a walking wheel and a longitudinal movement drive for driving the walking wheel; And / or, the chamfering roller is movably mounted on the lifting beam, and the lifting beam is provided with a transverse movement mechanism for adjusting the transverse position of the chamfering roller.

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