Prestressed steel bar chamfering device

Abstract

The utility model discloses a chamfering device for a prestressed steel bar. The chamfering device comprises an assembly bottom frame, an adjustable bearing mechanism and a sliding type chamfering mechanism. The adjustable bearing mechanism is fixedly assembled above the assembly bottom frame and comprises a steel bar bearing plate, one end of the steel bar bearing plate is fixedly connected with a limiting bottom plate, and a chamfering gap is formed between the limiting bottom plate and the steel bar bearing plate in a matched mode. The sliding type chamfering mechanism is fixedly assembled on one side of the assembling bottom frame and comprises a rack, a sliding assembling base is assembled on the upper portion of the rack in a sliding mode, a grinding rotary disc is rotationally connected to the upper portion of the sliding assembling base, and a grinding motor is fixedly assembled on the lower portion of the sliding assembling base. By arranging the adjustable bearing mechanism and the sliding type chamfering mechanism, an auxiliary effect can be achieved in the chamfering process of the prestressed steel bar, the adverse effect of human factors on the chamfering process of the prestressed steel bar is reduced, and the high efficiency and accuracy of chamfering machining of the prestressed steel bar are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of prestressed steel bar chamfering, and in particular relates to a prestressed steel bar chamfering device. Background Art

[0002] Prestressed steel rod refers to a type of steel rod used for prestressing. It has the characteristics of rigidity, toughness, low relaxation and good weldability. It is widely used in prestressed components such as prestressed concrete centrifugal pipe piles, electric poles, viaduct piers, railway sleepers, etc.

[0003] During the processing of prestressed steel bars, both ends of the cut steel bars need to be chamfered to prepare for the subsequent thread rolling process. Currently, the common chamfering methods for prestressed steel bars are: manual chamfering and fully automatic chamfering. Among them, fully automatic chamfering mainly uses automated equipment to fully automatically chamfer the two ends of the prestressed steel bars. Although it has the advantages of high processing efficiency and high processing accuracy, the processing cost of this processing method is relatively high and it is not suitable for the production and processing of small batches of prestressed steel bars. Manual chamfering is to chamfer the prestressed steel bars by manually operating an angle grinder. It has the advantage of a wide range of applications and is suitable for the production and processing of small batches of prestressed steel bars.

[0004] The prestressed steel bars in the prior art do not have corresponding auxiliary chamfering equipment when undergoing manual chamfering processing, which makes the prestressed steel bars easily affected by the proficiency of the processing personnel during the chamfering process, resulting in poor chamfering uniformity and accuracy, resulting in poor efficiency and accuracy in the chamfering process of the prestressed steel bars.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a prestressed steel bar chamfering device, which can improve the efficiency and accuracy of the prestressed steel bar chamfering process.

[0007] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0008] A prestressed steel bar chamfering device comprises an assembly base, an adjustable supporting mechanism and a sliding chamfering mechanism.

[0009] The adjustable supporting mechanism is fixedly assembled on the top of the assembly base frame, and the adjustable supporting mechanism includes a steel rod supporting plate, and the steel rod supporting plate is assembled on the top of the assembly base frame. One end of the steel rod supporting plate is fixedly connected to a limiting bottom plate, and a chamfered gap is formed between the limiting bottom plate and the steel rod supporting plate. A plurality of groups of lifting support columns are hingedly connected to the bottom of the steel rod supporting plate, and fixed bottom columns are slidably assembled on the outer sides of the plurality of groups of lifting support columns, and the fixed bottom columns are fixedly assembled on the top of the assembly base frame.

[0010] The sliding chamfering mechanism is fixedly mounted on one side of the assembly base, and the sliding chamfering mechanism includes a frame, and the frame is fixedly mounted on one side of the assembly base close to the limiting bottom plate, a sliding assembly seat is slidably mounted above the frame, a grinding turntable is rotatably connected above the sliding assembly seat, a grinding motor is fixedly mounted below the sliding assembly seat, and the output shaft of the grinding motor is drivingly connected to the grinding turntable.

[0011] In one or more embodiments of the present invention, the assembly chassis is composed of multiple groups of cross beams and longitudinal beams, the multiple groups of cross beams are arranged perpendicular to the longitudinal beams, and the multiple groups of cross beams and longitudinal beams are connected by welding.

[0012] In one or more embodiments of the utility model, both sides of the plurality of groups of the cross beams are plugged with support legs. The cross beams are supported and limited by the plurality of support legs. The outer sides of the support legs are threadedly connected with a pair of limit nuts, and the pair of limit nuts are symmetrically distributed on the upper and lower sides of the longitudinal beam. The limit nuts and the support legs cooperate with each other to provide adjustable support and limit for the cross beams.

[0013] In one or more embodiments of the utility model, the steel bar support plate is arranged in an arc shape. It is convenient to support and limit the prestressed steel bar to be processed through the arc-shaped steel bar support plate. A plurality of groups of evenly distributed operation avoidance holes are drilled on the inner wall of the steel bar support plate. By drilling the operation avoidance holes on the inner wall of the steel bar support plate, it is convenient for the operator to manually control the rotation of the prestressed steel bar supported in the steel bar support plate, thereby improving the convenience of operation.

[0014] In one or more embodiments of the utility model, a plurality of groups of evenly distributed hinged supports are fixedly connected below the steel bar support plate, and a connecting pin is hinged between the plurality of groups of hinged supports and the lifting support column. The lifting support column and the steel bar support plate are assembled and limited by the mutual cooperation of the hinged supports and the connecting pin, so that the steel bar support plate can be supported and limited by the lifting support column.

[0015] In one or more embodiments of the utility model, a plurality of groups of lifting support columns are threadedly connected with lifting threaded rods. The lifting threaded rods play the role of supporting and limiting and lifting control for the lifting support columns. A driving control cavity is excavated at the bottom of the fixed bottom column. The driving control cavity provides an assembly and operation space for the transmission bevel gear and the driving bevel gear. One end of the lifting threaded rod located in the driving control cavity is fixedly connected with a transmission bevel gear. The transmission bevel gear plays the role of rotationally driving the lifting threaded rod.

[0016] In one or more embodiments of the utility model, a driving bevel gear is meshed with a driving bevel gear on one side of the transmission bevel gear. The driving bevel gear plays a role in transmitting the power of the driving shaft. A driving shaft is fixedly connected inside the driving bevel gear. The driving shaft plays a role in supporting, limiting and rotating the driving bevel gear. A control terminal is fixedly connected to one end of the driving shaft outside the driving control cavity. The driving shaft is rotationally driven by applying a force to the control terminal.

[0017] In one or more embodiments of the utility model, a plurality of groups of evenly distributed support sliders are fixedly connected to the bottom of the sliding assembly seat. The sliding assembly seat is supported, fixed and slide-limited by the plurality of support sliders. A pair of guide rails are slidably mounted below the plurality of support sliders, and the pair of guide rails are fixedly mounted above the frame. The guide rails are used to assemble and slide-limit the support sliders. A locking bolt is threadedly connected to one side of the plurality of support sliders. The operation of the locking bolt is controlled to lock and fix along with the guide rail, thereby ensuring the operation stability of the sliding assembly seat.

[0018] In one or more embodiments of the utility model, a protective cover is fixedly connected to the upper part of the sliding assembly seat, and the protective cover is sleeved on the outer side of the grinding turntable. The protective cover plays a role of limiting protection for the chamfering state of the grinding turntable. A plurality of observation windows are fixedly connected to the protective cover. It is convenient to observe and judge the chamfering state of the prestressed steel rod on the grinding turntable through the plurality of observation windows.

[0019] In one or more embodiments of the utility model, a guide tube is fixedly installed on the side of the protective cover facing away from the steel rod support plate. The exhaust fan is assembled and limited by the guide tube. The exhaust fan is fixedly connected to one end of the guide tube away from the protective cover. The dust and harmful gases generated during the chamfering of the grinding turntable are discharged by controlling the operation of the exhaust fan, thereby reducing the influence of dust-containing air on the observation effect of the observation window. An adsorption dust filter net cylinder is fixedly connected to one end of the exhaust fan located in the protective cover. The dust-containing air guided by the exhaust fan is filtered and adsorbed and purified by the adsorption dust filter net cylinder.

[0020] Compared with the prior art, the utility model can assist the chamfering process of the prestressed steel bar by arranging an adjustable supporting mechanism and a sliding chamfering mechanism, thereby reducing the adverse effects of human factors on the chamfering process of the prestressed steel bar and improving the efficiency and accuracy of the chamfering process of the prestressed steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a front cross-sectional view of a prestressed steel rod chamfering device in one embodiment of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0024] Figure 3 It is a side cross-sectional view of a prestressed steel rod chamfering device in one embodiment of the utility model;

[0025] Figure 4 for Figure 3 Schematic diagram of the structure at B in the middle;

[0026] Figure 5 It is a three-dimensional diagram of a prestressed steel rod chamfering device in one embodiment of the utility model.

[0027] Description of main reference numerals:

[0028] 1-assembly base, 101-crossbeam, 102-longitudinal beam, 103-support foot, 104-limiting nut, 2-adjustable supporting mechanism, 201-steel rod supporting plate, 202-limiting bottom plate, 203-lifting support column, 204-fixed bottom column, 205-hinge support, 206-connecting pin, 207-lifting threaded rod, 208-transmission bevel gear, 209-driving bevel gear, 210-driving shaft, 211-control end, 3-sliding chamfering mechanism, 301-frame, 302-sliding assembly seat, 303-grinding turntable, 304-grinding motor, 305-support slider, 306-guide rail, 307-locking bolt, 308-protective cover, 309-observation window, 310-guide tube, 311-exhaust fan, 312-adsorption dust filter cylinder. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] like Figures 1 to 5 As shown, a prestressed steel rod chamfering device in one embodiment of the utility model comprises: an assembly base frame 1, an adjustable supporting mechanism 2, and a sliding chamfering mechanism 3.

[0031] Specifically, the assembly chassis 1 is composed of a plurality of groups of cross beams 101 and longitudinal beams 102 . The plurality of cross beams 101 and longitudinal beams 102 are arranged perpendicularly, and the plurality of cross beams 101 and longitudinal beams 102 are connected by welding.

[0032] like Figure 1 As shown, both sides of the multiple groups of cross beams 101 are plugged with support legs 103. The cross beams 101 are supported and limited by the multiple groups of support legs 103. The outer sides of the support legs 103 are threadedly connected with a pair of limit nuts 104, which are symmetrically distributed on the upper and lower sides of the longitudinal beam 102. The limit nuts 104 and the support legs 103 cooperate with each other to play the role of adjustable support and limit for the cross beam 101.

[0033] like Figure 1 to Figure 2 As shown, the adjustable supporting mechanism 2 is fixedly mounted above the assembly chassis 1, and the adjustable supporting mechanism 2 includes a steel bar supporting plate 201, and the steel bar supporting plate 201 is mounted above the assembly chassis 1. The prestressed steel bars to be processed are supported and limited by the steel bar supporting plate 201.

[0034] Specifically, the steel bar supporting plate 201 is arranged in an arc shape, so that the prestressed steel bar to be processed can be supported and limited by the arc-shaped steel bar supporting plate 201.

[0035] In addition, a plurality of evenly distributed operation avoidance holes are drilled on the inner wall of the steel bar support plate 201. By drilling the operation avoidance holes on the inner wall of the steel bar support plate 201, it is convenient for operators to manually control the rotation of the prestressed steel bars supported in the steel bar support plate 201, thereby improving the convenience of operation.

[0036] like Figure 1 to Figure 2 As shown, one end of the steel bar supporting plate 201 is fixedly connected to the limiting bottom plate 202. It is convenient to support and limit the prestressed steel bars tiltedly placed on the steel bar supporting plate 201 through the limiting bottom plate 202.

[0037] Preferably, a chamfering gap is formed between the limiting bottom plate 202 and the steel bar supporting plate 201, so that the end of the prestressed steel bar to be processed can be leaked out through the chamfering gap, thereby facilitating the chamfering of the prestressed steel bar.

[0038] like Figures 1 to 4 As shown, multiple groups of lifting support columns 203 are hingedly connected below the steel bar support plate 201. The steel bar support plate 201 is supported and limited by multiple groups of lifting support columns 203. At the same time, the inclination angle of the steel bar support plate 201 can be adjusted by adjusting and controlling the extension length of the lifting support columns 203, so as to facilitate the adjustment and control of the chamfer angle of the prestressed steel bar.

[0039] like Figure 1 As shown, a plurality of evenly distributed hinged supports 205 are fixedly connected to the bottom of the steel bar support plate 201, and a connecting pin 206 is hinged between the plurality of hinged supports 205 and the lifting support column 203. The hinged supports 205 and the connecting pin 206 cooperate with each other to play the role of assembly limit for the lifting support column 203 and the steel bar support plate 201, so that the lifting support column 203 can support and limit the steel bar support plate 201.

[0040] like Figures 1 to 4 As shown, the plurality of lifting support columns 203 are all threadedly connected with lifting threaded rods 207. The lifting threaded rods 207 support the lifting support columns 203 and limit the position and control the lifting.

[0041] like Figure 1 As shown, the outer sides of the plurality of lifting support columns 203 are all slidably mounted with fixed bottom columns 204, and the fixed bottom columns 204 are fixedly mounted above the assembly chassis 1. The fixed bottom columns 204 play the role of assembling and lifting limit for the lifting support columns 203.

[0042] It is worth noting that a drive control cavity is excavated at the bottom of the fixed bottom column 204. The drive control cavity provides an assembly and operation space for the transmission bevel gear 208 and the drive bevel gear 209. One end of the lifting threaded rod 207 located in the drive control cavity is fixedly connected to the transmission bevel gear 208. The transmission bevel gear 208 plays a role of rotationally driving the lifting threaded rod 207.

[0043] like Figure 3 to Figure 4 As shown, a driving bevel gear 209 is meshed with one side of the transmission bevel gear 208. The driving bevel gear 209 plays the role of transmitting the power of the driving shaft 210.

[0044] like Figure 3 to Figure 4 As shown, a driving shaft 210 is fixedly connected inside the driving bevel gear 209. The driving shaft 210 plays the role of supporting, limiting and rotating the driving bevel gear 209.

[0045] like Figure 3 to Figure 4 As shown, one end of the driving shaft 210 located outside the driving control cavity is fixedly connected to a control terminal 211. The driving shaft 210 is driven to rotate by applying a force to the control terminal 211.

[0046] like Figure 1 to Figure 2 As shown, the sliding chamfering mechanism 3 is fixedly assembled on one side of the assembly chassis 1, and the sliding chamfering mechanism 3 includes a frame 301, and the frame 301 is fixedly assembled on one side of the assembly chassis 1 close to the limiting bottom plate 202. The frame 301 plays a role in assembling and fixing the guide rail 306.

[0047] like Figures 1 to 5 As shown, a sliding assembly seat 302 is slidably mounted on the upper side of the frame 301. The sliding assembly seat 302 plays a role in assembling and fixing the grinding turntable 303 and the grinding motor 304.

[0048] like Figure 1 to Figure 2 As shown, a grinding turntable 303 is rotatably connected to the upper side of the sliding assembly seat 302. The grinding turntable 303 is rotated to grind and chamfer the end of the prestressed steel rod supported on the steel rod supporting plate 201.

[0049] like Figure 1 to Figure 2 As shown, a grinding motor 304 is fixedly mounted below the sliding assembly seat 302, and the output shaft of the grinding motor 304 is drivingly connected to the grinding turntable 303. The grinding motor 304 provides power, and the grinding turntable 303 is driven to rotate by controlling the operation of the grinding motor 304, so as to facilitate grinding and chamfering the end of the prestressed steel rod.

[0050] like Figures 1 to 4 As shown, the bottom of the sliding assembly seat 302 is fixedly connected with multiple groups of evenly distributed support sliders 305. The multiple groups of support sliders 305 play the role of supporting, fixing and sliding limiting for the sliding assembly seat 302.

[0051] like Figures 1 to 4 As shown, a pair of guide rails 306 are slidably mounted below the plurality of support sliders 305, and the pair of guide rails 306 are fixedly mounted above the rack 301. The guide rails 306 play the role of assembling and sliding limit for the support sliders 305.

[0052] like Figures 1 to 4 As shown, one side of the plurality of support slide blocks 305 is threadedly connected with a locking bolt 307. By controlling the operation of the locking bolt 307 to lock and fix with the guide rail 306, the operation stability of the sliding assembly seat 302 is ensured.

[0053] like Figure 5As shown, a protective cover 308 is fixedly connected to the upper part of the sliding assembly seat 302, and the protective cover 308 is sleeved on the outer side of the grinding turntable 303. The protective cover 308 plays a role of limiting protection for the chamfering state of the grinding turntable 303.

[0054] like Figure 5 As shown, a plurality of observation windows 309 are fixedly connected to the protective cover 308. It is convenient to observe and judge the chamfering state of the prestressed steel rod on the grinding turntable 303 through the plurality of observation windows 309.

[0055] Preferably, the observation window 309 is a transparent acrylic plate, which has the advantages of low cost and good protection effect.

[0056] like Figure 1 to Figure 2 As shown, a guide tube 310 is fixedly installed on the side of the protective cover 308 away from the steel bar support plate 201. The guide tube 310 is used to assemble and guide the exhaust fan 311.

[0057] like Figure 1 to Figure 2 As shown, the end of the guide tube 310 away from the protective cover 308 is fixedly connected to an exhaust fan 311. By controlling the operation of the exhaust fan 311, the dust and harmful gases generated during the chamfering process of the grinding turntable 303 are discharged, reducing the influence of dusty air on the observation effect of the observation window 309.

[0058] Preferably, the exhaust fan 311 is commercially available and can be purchased and used directly.

[0059] like Figure 1 to Figure 2 As shown, one end of the exhaust fan 311 located in the protective cover 308 is fixedly connected with an adsorption dust filter net cylinder 312. The dust-containing air guided by the exhaust fan 311 is filtered and adsorbed and purified by the adsorption dust filter net cylinder 312.

[0060] During specific use, the operator can drive the driving bevel gear 209 to rotate by driving the control end 211 according to the actual chamfering requirements of the prestressed steel bar, and the lifting threaded rod 207 rotates under the meshing action of the transmission bevel gear 208 and the driving bevel gear 209. In this way, the lifting support column 203 is lifted and lowered with the rotation of the lifting threaded rod 207 under the action of the internal and external threads, and the chamfering angle of the prestressed steel bar is adjusted by adjusting the extension height of multiple groups of lifting support columns 203.

[0061] After the angle of the steel bar support plate 201 is adjusted, the prestressed steel bar to be processed is placed on the steel bar support plate 201, and the prestressed steel bar is supported and limited by the cooperation between the steel bar support plate 201 and the limiting bottom plate 202, and the end of the prestressed steel bar is exposed in the chamfering gap. At this time, the grinding turntable 303 is driven to rotate by controlling the operation of the grinding motor 304, and the prestressed steel bar in the chamfering gap is chamfered by the rotation of the grinding turntable 303.

[0062] During the chamfering of the prestressed steel bar, the chamfering process can be protected by the protective cover 308 and the observation window 309. At the same time, the dust-containing gas generated during the chamfering of the grinding turntable 303 can be diverted by controlling the operation of the exhaust fan 311, and the dust-containing gas can be filtered by the adsorption dust filter net cylinder 312, thereby improving the environmental protection and safety of the chamfering of the prestressed steel bar.

[0063] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prestressed steel bar chamfering device, characterized in that: include: Mounting chassis (1); An adjustable supporting mechanism (2) is fixedly mounted above the assembly base (1), the adjustable supporting mechanism (2) comprising a steel bar supporting plate (201), the steel bar supporting plate (201) being mounted above the assembly base (1), one end of the steel bar supporting plate (201) being fixedly connected to a limiting bottom plate (202), a chamfered gap being formed between the limiting bottom plate (202) and the steel bar supporting plate (201), a plurality of groups of lifting support columns (203) being hingedly mounted below the steel bar supporting plate (201), the outer sides of the plurality of groups of lifting support columns (203) being slidably mounted with fixed bottom columns (204), the fixed bottom columns (204) being fixedly mounted above the assembly base (1); A sliding chamfering mechanism (3) is fixedly mounted on one side of the assembly base (1), and comprises a frame (301). The frame (301) is fixedly mounted on one side of the assembly base (1) close to the limiting base plate (202). A sliding assembly seat (302) is slidably mounted above the frame (301), a grinding turntable (303) is rotatably connected above the sliding assembly seat (302), and a grinding motor (304) is fixedly mounted below the sliding assembly seat (302), and an output shaft of the grinding motor (304) is drivingly connected to the grinding turntable (303).

2. The prestressed steel bar chamfering device according to claim 1, characterized in that: The assembly chassis (1) is composed of multiple groups of cross beams (101) and longitudinal beams (102); the multiple groups of cross beams (101) and longitudinal beams (102) are arranged vertically, and the multiple groups of cross beams (101) and longitudinal beams (102) are connected by welding.

3. The prestressed steel bar chamfering device according to claim 2, characterized in that: Support legs (103) are inserted on both sides of the plurality of groups of cross beams (101), and the outer sides of the support legs (103) are threadedly connected to a pair of limit nuts (104), and the pair of limit nuts (104) are symmetrically distributed on the upper and lower sides of the longitudinal beam (102).

4. The prestressed steel bar chamfering device according to claim 1, characterized in that: The steel bar supporting plate (201) is arranged in an arc shape, and a plurality of groups of evenly distributed operation avoidance holes are drilled on the inner wall of the steel bar supporting plate (201).

5. The prestressed steel bar chamfering device according to any one of claims 1, 2 or 4, characterized in that: A plurality of groups of evenly distributed hinged supports (205) are fixedly connected below the steel rod support plate (201), and connecting pins (206) are hingedly connected between the plurality of groups of hinged supports (205) and the lifting support column (203).

6. The prestressed steel bar chamfering device according to claim 1, characterized in that: A plurality of groups of lifting support columns (203) are all threadedly connected with lifting threaded rods (207); a driving control cavity is excavated at the bottom of the fixed bottom column (204); and one end of the lifting threaded rod (207) located in the driving control cavity is fixedly connected with a transmission bevel gear (208).

7. The prestressed steel bar chamfering device according to claim 6, characterized in that: A driving bevel gear (209) is meshed with one side of the transmission bevel gear (208), a driving shaft (210) is fixedly connected inside the driving bevel gear (209), and a control terminal (211) is fixedly connected to one end of the driving shaft (210) located outside the driving control cavity.

8. The prestressed steel bar chamfering device according to claim 1, characterized in that: A plurality of groups of evenly distributed supporting slide blocks (305) are fixedly connected to the bottom of the sliding assembly seat (302), a pair of guide rails (306) are slidably assembled below the plurality of groups of supporting slide blocks (305), the pair of guide rails (306) are fixedly assembled above the frame (301), and a locking bolt (307) is threadedly connected to one side of the plurality of groups of supporting slide blocks (305).

9. The prestressed steel bar chamfering device according to any one of claims 1 or 8, characterized in that: A protective cover (308) is fixedly connected to the upper side of the sliding assembly seat (302), the protective cover (308) is sleeved on the outer side of the grinding turntable (303), and a plurality of observation windows (309) are fixedly connected to the protective cover (308).

10. The prestressed steel bar chamfering device according to claim 9, characterized in that: A guide tube (310) is fixedly mounted on the side of the protective cover (308) facing away from the steel rod support plate (201); one end of the guide tube (310) away from the protective cover (308) is fixedly connected to an exhaust fan (311); and one end of the exhaust fan (311) located inside the protective cover (308) is fixedly connected to an adsorption dust filter net tube (312).

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