Cutting and drilling device and method for manhole bolts

Abstract

The application discloses a manhole bolt cutting and drilling device and a cutting and drilling method. The cutting and drilling device comprises an adapter plate which is fixedly connected with the outer edge of a manhole; the working tool holder comprises a rack, a driving motor and a main shaft, the main shaft is fixedly connected with a working tool, one end of the rack close to the main shaft is provided with a first sliding channel, a first bearing plate is connected with the first sliding channel through a first sliding block, the first bearing plate is arranged perpendicularly to the first sliding channel, the first bearing plate is provided with a second sliding channel, the driving motor is connected with the second sliding channel through a second sliding block, and one side of the rack close to the main shaft is arranged close to the adapter plate; the auxiliary turnover trolley comprises a trolley frame and a turnover support arranged on the trolley frame, the turnover support is connected with one side of the rack close to the driving motor, and the turnover support is used for keeping the working tool holder perpendicular to the adapter plate. The working efficiency is improved, the cutting and drilling device is simple in structure and convenient to operate, the working strength of workers is reduced, and the physical damage of workers caused by radiation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stuck bolt removal, in particular to a manhole bolt cutting and drilling device and a cutting and drilling method. BACKGROUND

[0002] The evaporator is a very important large heat exchange equipment in a nuclear power generation system, and each pressurized water reactor unit generally has 2-3 evaporators, and each evaporator has 2 manholes on the water chamber for maintenance of the evaporator water chamber, which is sealed by a flange, and a double-end bolt is connected by threads on one end of the evaporator body and the other end is used to fasten the flange. During repeated installation and disassembly of the flange, the thread profile of the bolt will be damaged to varying degrees, causing the bolt to be stuck and unable to be unscrewed, affecting the sealing of the flange, and further affecting the maintenance of the evaporator water chamber. Moreover, the radiation dose near the manhole of the nuclear-grade evaporator is very high, and the stuck bolt needs to be processed in time. At this time, it is particularly important to ensure that the bolt can be smoothly removed by cutting and drilling the bolt with a special device.

[0003] However, due to the large size of such cutting and drilling special tools, and the different orientations and angles of the stuck bolts arranged along the circumference of the manhole, the bolts on the container can no longer be cut and drilled by large professional equipment. Manual cutting and drilling takes a long time and radiation has an impact on the health of workers. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art or related art.

[0005] Therefore, the present application provides a manhole bolt cutting and drilling device and a cutting and drilling method, wherein the manhole bolt cutting and drilling device establishes a machining reference surface with the bolt to be cut and drilled through an adapter plate, and the stuck bolt can be removed through two coordinates of a working tool holder, improving the work efficiency of bolt cutting and drilling. The cutting and drilling device is simple in structure and easy to operate, reducing the work intensity of workers and avoiding physical damage to workers caused by radiation.

[0006] Specifically, the technical solutions include the following:

[0007] Embodiments of the first aspect of the present application provide a manhole bolt cutting and drilling device, which comprises:

[0008] The adapter plate is fixedly connected to the outer edge of the manhole.

[0009] The utility tool holder comprises a rack, a driving motor and a main shaft arranged inside the rack, the main shaft is fixedly connected with a utility tool, a first sliding channel is arranged on one end of the rack close to the main shaft, a first bearing plate is connected with the first sliding channel through a first sliding block, the first bearing plate is arranged perpendicularly to the first sliding channel, a second sliding channel is arranged on the first bearing plate, the driving motor is connected with the second sliding channel through a second sliding block, and the rack is arranged close to the adapter plate on one side close to the main shaft;

[0010] The auxiliary turnover trolley comprises a rack and a turnover support arranged on the rack, the turnover support is connected with one side of the rack close to the driving motor, and the turnover support is used for keeping the utility tool holder and the adapter plate perpendicular.

[0011] Optionally, the adapter plate comprises:

[0012] The base plate comprises a circular plate and a connecting lug arranged on the circular plate, a connecting piece is arranged on the connecting lug, and the base plate is fixedly connected with a threaded hole of an outer edge of the manhole through the connecting piece;

[0013] The boss is arranged on the base plate, the boss is in a circular shape, and the boss is matched with the manhole in a gap.

[0014] Optionally, the adapter plate is provided with a first positioning pin, the rack comprises a first bottom plate and a second bottom plate, and a supporting rod for connecting the first bottom plate and the second bottom plate, the first bottom plate is arranged close to the adapter plate, the first bottom plate is provided with a first pin hole, the adapter plate is connected with the first pin hole through the first positioning pin, the second bottom plate is connected with the turnover support, and the first bottom plate is provided with a first sliding channel.

[0015] Optionally, the second bottom plate is provided with a second pin hole, both sides of the first bottom plate and / or the second bottom plate are provided with a protruding plate, the protruding plate is located on both sides of the width direction of the first sliding channel, the protruding plate is provided with a first positioning hole, and the auxiliary turnover trolley further comprises:

[0016] The rotating plate is arranged on the turnover support, the rotating plate is provided with a second positioning pin, the rotating plate is connected with the second pin hole through the second positioning pin, the mounting plate is further provided with a guide hole, the guide hole is located at the edge of the rotating plate, and a pair of second positioning pins are located between a pair of guide holes;

[0017] The guide rod passes through the first positioning hole and the guide hole in sequence;

[0018] The motor and the speed reducer are fixedly connected with the output shaft of the motor and the speed reducer, and are used for driving the rotation of the rotating plate.

[0019] Optionally, the adapter plate is further provided with a second positioning hole, and the guide rod passes through the second positioning hole.

[0020] Optionally, one side of the rotating plate facing the turnover support is provided with a first telescopic rod, a fixed end of the first telescopic rod is fixedly connected with the rotating plate, an extended end of the first telescopic rod passes through the rotating plate, the first telescopic rod is located between a pair of second positioning pins, and the first telescopic rod is aligned with the second bottom plate.

[0021] Optionally, the vehicle frame comprises:

[0022] A base frame is provided with a handrail at one end and a turnover support hinged at the other end;

[0023] A first telescopic leg is arranged at each corner of the base frame, and a first walking wheel is arranged at an end of the first telescopic leg away from the base frame.

[0024] Optionally, the vehicle frame further comprises:

[0025] A pressing plate groove is arranged in a U-shaped manner, the pressing plate groove is fixedly connected with the base frame, and a groove opening of the pressing plate groove faces the side of the first walking wheel;

[0026] An auxiliary support beam comprises a connecting beam arranged vertically and a second telescopic leg, the connecting beam is arranged in the groove opening of the pressing plate groove, a bolt is arranged on the pressing plate groove, and the bolt is used for fixing the connecting beam, the second telescopic leg is provided with a second walking wheel at a side away from the connecting beam, and the second walking wheel is located on the same straight line as the first walking wheel.

[0027] Optionally, the auxiliary turnover trolley further comprises:

[0028] A second telescopic rod is arranged on the base frame, and the second telescopic rod is located on the center line of the base frame;

[0029] A connecting rod is hinged at one end of the second telescopic rod and at the other end of the turnover support;

[0030] The turnover support is hinged with the vehicle frame.

[0031] The embodiment of the second aspect of the application provides a cutting and drilling method of a manhole bolt, and the cutting and drilling method is obtained by using the cutting and drilling device of the manhole bolt.

[0032] The threaded hole to be cut and drilled is positioned by the adapter plate;

[0033] The working tool holder is installed behind the auxiliary turnover trolley and is fixed with the adapter plate through a guide rod;

[0034] The position of the main shaft on the working tool holder is adjusted, a cutting saw blade milling cutter is installed first, the height position of the main shaft and the bolt to be cut is adjusted, the bolt to be cut is cut by controlling the movement of the first sliding block;

[0035] The main shaft is adjusted to the position of the bolt to be drilled by the first sliding block, a drill bit is installed, and the drilling operation on the bolt is realized by the movement of the second sliding block.

[0036] The cutting and drilling device and the cutting and drilling method of the manhole bolt provided by the embodiment of the application, wherein the cutting and drilling device of the manhole bolt comprises an adapter plate, which is fixedly connected with the outer edge of the manhole to establish a machining reference surface, and through the setting of an auxiliary turnover trolley and a turnover support thereon, the working tool holder can be kept perpendicular to the adapter plate, the working tool holder comprises a rack, a driving motor and a main shaft, the rack is provided with a first sliding channel at one end close to the main shaft, a first bearing plate is connected with the first sliding channel through a first sliding block, the first bearing plate is arranged perpendicularly to the first sliding channel, the first bearing plate is provided with a second sliding channel, the driving motor is connected with the second sliding channel through a second sliding block, an XZ-axis adjustment mechanism is formed, and then the main shaft can be conveniently aligned with the bolt to be cut and drilled, the work efficiency and reliability of the bolt to be taken out are improved, the cutting and drilling device is simple in structure and convenient to operate, and the health of the workers is protected from the influence of the radiation near the manhole of the nuclear-grade evaporator.

[0037] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will specifically describe the embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creating any labor.

[0039] Figure 1 It is a schematic view of the cutting and drilling device of the manhole bolt according to an embodiment of the application.

[0040] Figure 2 Schematic diagram of an adapter plate according to an embodiment of the application;

[0041] Figure 3 Schematic diagram of a working tool holder according to an embodiment of the application;

[0042] Figure 4 Schematic diagram of a working tool holder according to an embodiment of the application; Figure 3 Schematic diagram of a working tool holder according to an embodiment of the application;

[0043] Figure 5 Schematic diagram of an auxiliary turnover trolley according to an embodiment of the application;

[0044] Figure 6 Flowchart of steps of a cutting and drilling method for a manhole bolt according to an embodiment of the application.

[0045] Wherein, Figures 1 to 5 The correspondence between the reference signs and the component names in the drawings is as follows:

[0046] 100 adapter plate, 110 base plate, 120 connecting piece, 130 first positioning pin, 140 boss, 200 working tool holder, 210 rack, 211 first bottom plate, 212 second bottom plate, 213 support rod, 214 protruding plate, 220 driving motor, 230 main shaft, 240 first sliding block, 250 first bearing plate, 260 second sliding block, 300 auxiliary turnover trolley, 310 trolley frame, 311 base frame, 312 first walking wheel, 313 pressing plate slot, 314 auxiliary support beam, 315 second walking wheel, 316 first telescopic leg, 320 turnover support, 330 rotating plate, 340 second positioning pin, 350 guide rod, 360 first telescopic rod, 370 motor and speed reducer, 380 second telescopic rod, 390 connecting rod, 400 manhole. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] Before the embodiments of the present application are further described in detail, the orientation nouns such as “upper part”, “lower part”, “side part” involved in the embodiments of the present application do not have the meaning of limiting the scope of protection of the present application.

[0049] In order to make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0050] Example 1

[0051] Figure 1 A schematic view of a manhole bolt cutting and drilling device according to an embodiment of the present application; Figure 3 A schematic view of a working tool holder according to an embodiment of the present application; Figure 4 A schematic view of the working tool holder from another perspective of the embodiment shown. Figure 3 A schematic view of the working tool holder from another perspective of the embodiment shown.

[0052] As shown in Figure 1 , Figure 3 and to Figure 4 An embodiment of the present application provides a manhole bolt cutting and drilling device, which comprises:

[0053] An adapter plate 100 is fixedly connected to the outer edge of the manhole 400;

[0054] A working tool holder 200 comprises a rack 210, a driving motor 220 and a main shaft 230 arranged inside the rack 210, the main shaft 230 being fixedly connected to a working tool, one end of the rack 210 close to the main shaft 230 being provided with a first sliding channel, a first bearing plate 250 being connected to the first sliding channel through a first sliding block 240, the first bearing plate 250 being arranged perpendicularly to the first sliding channel, the first bearing plate 250 being provided with a second sliding channel, the driving motor 220 being connected to the second sliding channel through a second sliding block 260, one side of the rack 210 close to the main shaft 230 being arranged close to the adapter plate 100;

[0055] An auxiliary turnover trolley 300 comprises a trolley frame 310 and a turnover support 320 arranged on the trolley frame 310, the turnover support 320 being connected to one side of the rack 210 close to the driving motor 220, the turnover support 320 being used to keep the working tool holder 200 and the adapter plate 100 perpendicular.

[0056] The cutting and drilling device of the manhole bolt comprises an adapter plate 100 fixedly connected with the outer edge of the manhole 400 to establish a machining reference surface, and through the setting of the auxiliary turnover trolley 300 and the turnover bracket 320 thereon, the working tool holder 200 can be kept perpendicular to the adapter plate 100. The working tool holder 200 comprises a rack 210, a driving motor 220 and a main shaft 230. The first sliding way is arranged at one end of the rack 210 close to the main shaft 230. The first bearing plate 250 is connected with the first sliding way through the first sliding block 240. The first bearing plate 250 is arranged perpendicularly to the first sliding way. The second sliding way is arranged on the first bearing plate 250. The driving motor 220 is connected with the second sliding way through the second sliding block 260 to form an XZ-axis adjusting mechanism, so that the main shaft 230 can be aligned with the bolt to be cut and drilled, and the work efficiency and reliability of the bolt extraction are improved. The cutting and drilling device has simple structure and convenient operation, and can avoid the influence of the radiation near the manhole 400 of the nuclear-grade evaporator on the health of the workers.

[0057] It should be noted that the double-headed bolt arranged circumferentially on the outer edge of the manhole 400 can be screwed down to take off the nut of the flange, and then the manhole 400 is exposed to cooperate with the adapter plate 100 to establish a working reference surface. However, not all bolts are stuck. The bolt hole corresponding to the detachable bolt is fixedly connected with the adapter plate 100 to establish a reference working surface for the working tool (cutting and drilling tool), and then the working tool holder 200 is installed on the turnover bracket 320 of the auxiliary turnover trolley 300. By adjusting the included angle between the turnover bracket 320 and the frame 310, the axis of the main shaft 230 on the working tool holder 200 is kept perpendicular to the adapter plate 100. Finally, the height and pose of the main shaft 230 relative to the bolt to be cut are adjusted by the second sliding block 260. The bolt is first cut by moving the first sliding block 240, and then the main shaft 230 is adjusted to the position of the cut bolt by the first sliding block 240. The drill bit is installed, and the drilling of the bolt is realized by the feeding of the second sliding block 260. When the first sliding block 240 is at the middle position, the main shaft 230 is not required to move left and right, and the drilling positioning can be completed by using the two-axis tool holder, thereby improving the work efficiency of cutting and drilling, and the structure of the device is simple, convenient to install, reduces the working time and the working intensity of the workers, and avoids the damage of radiation to the workers.

[0058] Further, as shown in Figure 3 , the direction of the first sliding way is Figure 3 the front-rear (inside-outside) direction, which is set as the X-axis. The second sliding way is arranged perpendicularly to the first sliding way, that is, Figure 3The up-and-down direction is set as the Z axis, so that the tool holder 200 forms a two-coordinate working tool, which is beneficial to the cutting and drilling of the bolt to be cut by the working tool on the spindle 230, that is, the stuck bolt is removed, and after the cutting and drilling are completed, the threaded hole can be repaired through repair work. The first bearing plate 250 can be L-shaped and includes a first plate and a second plate arranged perpendicularly, and the second plate is connected to the first slide through the first sliding block 240, thereby increasing the contact area of the first bearing plate 250 with the first slide and improving the stability of the movement of the first bearing plate 250.

[0059] Figure 2 Schematic view of an adapter plate according to an embodiment of the application.

[0060] In one possible implementation, as shown in Figure 2 the adapter plate 100 comprises:

[0061] The base plate 110 includes a circular plate and a connecting lug arranged on the circular plate, the connecting lug is provided with a connecting piece 120, and the base plate 110 is fixedly connected to the threaded hole of the outer edge of the manhole 400 through the connecting piece 120;

[0062] The boss 140 is arranged on the base plate 110, the boss 140 is circular, and the boss 140 is in clearance fit with the manhole 400.

[0063] When there are more bolts to be removed on the circumference of the manhole 400, at least one bolt can be found to be removed integrally, and the adapter plate 100 can be fixed through the threaded hole corresponding to the bolt, so that several connecting pieces 120 can be used to fix the adapter plate 100 after some bolts are removed, thereby improving the stability of the bolt cutting and drilling. In the embodiment, at most three connecting pieces 120 are used to fix the adapter plate 100.

[0064] It should be noted that the boss 140 is in clearance fit with the manhole 400, which is more convenient for cutting and drilling to remove the threaded holes at different angles in the circumferential direction. When the bolt to be cut and drilled cannot be reached through the two-way movement of the tool holder 200, the adapter plate 100 can be timely rotated to find an angle more suitable for cutting and drilling the bolt, and the adapter plate 100 is re-fixed, so that the angle of the tool holder 200 on the adapter plate 100 is changed, which is more suitable for cutting and drilling the bolt at multiple angles and in multiple directions, thereby improving the work efficiency of cutting and drilling the bolt.

[0065] Further, the connecting piece 120 can be any part that can be connected by a screw or a bolt, which is not limited herein.

[0066] In a feasible implementation, the adapter plate 100 is provided with a first positioning pin 130, and the rack 210 comprises a first bottom plate 211 and a second bottom plate 212, and a support rod 213 for connecting the first bottom plate 211 and the second bottom plate 212, the first bottom plate 211 is arranged close to the adapter plate 100, the first bottom plate 211 is provided with a first pin hole, and the adapter plate 100 is connected with the first pin hole through the first positioning pin 130, the second bottom plate 212 is connected with the turnover support 320, and the first bottom plate 211 is provided with a first sliding way.

[0067] The working tool holder 200 is lifted by the first telescopic rod 360 on the auxiliary turnover trolley 300, so that the working tool holder 200 is close to the adapter plate 100, and the adapter plate 100 is fixed with the working tool holder 200 through the first positioning pin 130, in the working process, the first telescopic rod 360 always supports the working tool holder 200, so as to ensure the stability of the working tool holder 200, it should be noted that at least two first positioning pins 130 are included, and the three-point fixing of the two first positioning pins 130 and the first telescopic rod 360 can improve the stability of the working tool holder 200, and then improve the stability of the working tool, and improve the efficiency of bolt cutting and drilling.

[0068] It should be noted that the first sliding way is arranged on the first bottom plate 211, and two first sliding ways are usually arranged in parallel, so as to ensure the stability of the movement of the first bearing plate 250.

[0069] Figure 5 A schematic view of the auxiliary turnover trolley according to an embodiment of the application;

[0070] In a feasible implementation, as shown in Figure 5 The second bottom plate 212 is provided with a second pin hole, the two sides of the first bottom plate 211 and / or the second bottom plate 212 are provided with a protruding plate 214, the protruding plate 214 is located on the two sides of the width direction of the first sliding way, the protruding plate 214 is provided with a first positioning hole, and the auxiliary turnover trolley 300 further comprises:

[0071] A rotating plate 330 arranged on the turnover support 320, the rotating plate 330 is provided with a second positioning pin 340, the rotating plate 330 is connected with the second pin hole through the second positioning pin 340, the mounting plate is further provided with a guide hole, the guide hole is located at the edge of the rotating plate 330, and a pair of second positioning pins 340 are located between a pair of guide holes;

[0072] A guide rod 350 sequentially penetrating the first positioning hole and the guide hole;

[0073] The motor and speed reducer 370, the output shaft of the motor and speed reducer 370 passes through the turnover support 320, while the output shaft of the motor and speed reducer 370 is fixedly connected with the rotating plate 330, and is used for driving the rotation of the rotating plate 330. The output shaft is connected with the turnover support 320 through a bearing.

[0074] The rotating plate 330 is arranged on the turnover support 320, the rotating plate 330 is provided with a second positioning pin 340, the second positioning pin 340 is arranged close to the center of the rotating plate 330, the rotating plate 330 is connected with the second pin hole through the second positioning pin 340, the guide hole is arranged on the edge of the rotating plate 330, the bearing with a locking function is arranged in the guide hole, when the guide rod 350 passes through the guide hole (at this time, the locking function bearing is not locked) and the first positioning hole, the working tool holder 200 is lifted up through the first telescopic rod 360, and the guide rod 350 is locked after passing through the bearing with a locking function of the adaptive plate 100, so that the guide rod 350 is prevented from moving, the stability of the working tool holder 200 is improved, and it is ensured that the end, away from the driving motor 220, of the main shaft 230 faces the side of the bolt to be cut.

[0075] It should be noted that the bearing with a locking function is an Yiheda LMT07-d30-L bearing with a clamping handle.

[0076] Further, in the embodiment, the protruding plates 214 are arranged on the two opposite edges of the first bottom plate 211, and the protruding plates 214 are also arranged on the two opposite edges of the second bottom plate 212. The protruding plates 214 on the first bottom plate 211 correspond in position to the protruding plates 214 on the second bottom plate 212. The protruding plates 214 are provided with first positioning holes, and the positions of the first positioning holes are aligned with the positions of the guide holes, so that the stability of the guide rod 350 supporting the working tool holder 200 is improved. Figure 3 As shown in the figure, the two sides in the width direction of the first slide way refer to the two sides of the protruding plates 214 in the vertical direction of the X axis, so that the movement of the driving motor 220 driving the main shaft 230 is avoided, and the reliability of the working cutter is ensured.

[0077] The rotating plate 330 is a flat plate, and a pair of protection plates are arranged on the side of the rotating plate 330 facing the turnover support 320. On one hand, the protection plates are used for protecting the motor and speed reducer 370, so as to avoid the collision of the motor and speed reducer 370. On the other hand, the distance between the rotating plate 330 and the turnover support 320 can be increased, so as to avoid the excessive deepening of the guide rod 350 into the avoiding groove of the turnover support 320, and the reliability of the installation of the guide rod 350 is improved.

[0078] In a feasible implementation manner, the adaptive plate 100 is further provided with a second positioning hole, and the guide rod 350 passes through the second positioning hole.

[0079] The second positioning hole is arranged on the adapter plate 100, and two second positioning holes are usually arranged. The guide rod 350 passes through the second positioning hole to ensure the stability of the guide rod, thereby improving the stability of the movement of the repair tool holder on the guide rod 350.

[0080] It should be noted that the pair of second positioning holes are arranged oppositely, are more uniformly stressed, and make the movement of the working tool holder 200 on the guide rod 350 more stable.

[0081] In a feasible implementation, the rotating plate 330 is provided with a first telescopic rod 360 on one side of the turnover bracket 320. The fixed end of the first telescopic rod 360 is fixedly connected with the rotating plate 330, the extended end of the first telescopic rod 360 passes through the rotating plate 330, the first telescopic rod 360 is located between the pair of second positioning pins 340, and the first telescopic rod 360 is aligned with the second bottom plate 212.

[0082] The first telescopic rod 360 is arranged to push the movement of the working tool holder 200 on the guide rod 350, move the working tool on the working tool holder 200 to the side close to the manhole 400, facilitate the work of the working tool, reduce the size and weight of the working tool holder 200, improve the working stability and reliability of the cutting and drilling device, and improve the flexibility of the working tool holder 200.

[0083] In a feasible implementation, the vehicle frame 310 comprises:

[0084] The base frame 311 is provided with a handrail at one end, and the turnover bracket 320 is hingedly connected to the other end of the base frame 311.

[0085] The first telescopic leg 316 is arranged at the four corners of the base frame 311, and the first walking wheel 312 is arranged at the end of the first telescopic leg 316 away from the base frame 311.

[0086] The base frame 311 can be provided with a handrail, which can facilitate the movement of the repair device by the staff, reduce the work intensity of the staff, and facilitate subsequent movement to any desired position.

[0087] It should be noted that the first telescopic leg 316 is generally a telescopic rod, which can be adjusted in height, so that the auxiliary turnover trolley 300 can adapt to the cutting and drilling of bolts of different heights. The first telescopic leg 316 is usually provided with four first walking wheels 312 at the lower end, and the first walking wheel 312 is a universal for wheel. The universal for wheel can adjust the height, which can be applied to inclined ground to ensure the horizontal position of the base frame 311, and can also fix the position of the auxiliary turnover trolley 300 to avoid movement during work.

[0088] In a feasible implementation, the vehicle frame 310 further comprises:

[0089] The pressing plate groove 313 is arranged in a U shape, is fixedly connected with the base frame 311, and has a groove opening facing the first walking wheel 312 side;

[0090] The auxiliary support beam 314 includes a vertical connecting beam arranged in the groove opening of the pressing plate groove 313 and a second telescopic leg, and the pressing plate groove 313 is provided with a bolt for fixing the connecting beam. The second telescopic leg is provided with a second walking wheel 315 on a side away from the connecting beam, and the second walking wheel 315 is located on the same straight line as the first walking wheel 312.

[0091] The auxiliary support beam 314 can extend the length of the base frame 311. The bolt on the pressing plate groove 313 is loosened to pull out the connecting beam, and then the second telescopic leg and the second walking wheel 315 are supported on the ground. After the length is extended to the required length, the bolt is tightened to fix the auxiliary support beam 314. Further, the extension length of the second telescopic leg corresponds to the height of the first telescopic pair, that is, the first walking wheel 312 and the second walking wheel 315 are located on the same straight line.

[0092] It should be noted that the overturning of the overturning support 320 also overturns the rotating plate 330 thereon. When rotated to a certain angle, the auxiliary overturning trolley 300 is prone to tilting and falling due to the increased weight of the end away from the handrail. By extending the length of the base frame 311 through the auxiliary support beam 314, the extension length of the auxiliary support beam 314 is adjusted according to the overturning angle of the overturning support 320, so that the balance of the auxiliary overturning trolley 300 can be ensured, the falling of the auxiliary overturning trolley 300 can be avoided, and the working stability and reliability of the cutting and drilling device can be improved.

[0093] The second telescopic leg is arranged above the second walking wheel 315 to ensure that the second walking wheel 315 and the first walking wheel 312 are always located on the same straight line. Generally, the first telescopic leg 316 and the second telescopic leg work simultaneously to ensure that the first walking wheel 312 and the second walking wheel 315 are on the same straight line, thereby ensuring the support stability of the trolley frame 310.

[0094] In a possible implementation, the auxiliary overturning trolley 300 further includes:

[0095] The second telescopic rod 380 is arranged on the base frame 311 and located on the center line of the base frame 311;

[0096] The connecting rod 390 is hingedly connected at one end to the extension end of the second telescopic rod 380 and at the other end to the overturning support 320.

[0097] The turnover support 320 is hinged to the frame 310.

[0098] The second telescopic rod 380 is arranged on the base frame 311, and the second telescopic rod 380 is located on the center line of the base frame 311, that is, the fixed end of the second telescopic rod 380 is fixedly connected to the base frame 311, the extending end of the second telescopic rod 380 is hinged to the first end of the connecting rod 390, and the second end of the connecting rod 390 is hinged to the turnover support 320. Thus, by extending and retracting the second telescopic rod 380, the movement of the connecting rod 390 can be pushed, and then the turnover support 320 and the base frame 311 can form different angles, and then the working tool holder 200 on the turnover support 320 and the adapter plate 100 can be kept perpendicular, and the cutting and drilling of the bolt at any angle can be removed.

[0099] It should be noted that the turnover support 320 includes a working plate and a pair of connecting plates, the pair of connecting plates are arranged perpendicularly to the working plate, the pair of connecting plates are hinged to the frame 310, and the pair of connecting plates are usually triangular, which can avoid interference between the turnover support 320 and the base frame 311 during rotation of the turnover support 320. The connecting rod 390 is hinged to the working plate and avoids the first telescopic rod 360, the motor and the speed reducer 370 below the working plate. The working plate is provided with a avoiding slot, which can avoid interference between the guide rod 350 and the working plate during operation of the guide rod 350. Usually, the rotating plate 330 needs to be rotated, and when the position of the rotating plate 330 corresponds to the position of the working plate, the avoiding slot can avoid interference between the guide rod 350 and the working plate, and affect the cutting and drilling of the bolt.

[0100] Further, the second telescopic rod 380 and the connecting rod 390 are used to realize rotation of the turnover support 320, and therefore, the second telescopic rod 380 needs to be arranged on the center line of the base frame 311 to improve the stability of the turnover support 320.

[0101] Example 2

[0102] Figure 6 A flowchart of steps of a manhole bolt cutting and drilling method according to an embodiment of the present application.

[0103] As shown in Figure 6 An embodiment of the present application provides a manhole bolt cutting and drilling method, which is obtained by using the manhole bolt cutting and drilling device of embodiment 1. The cutting and drilling method comprises the following steps:

[0104] Step 1: positioning the threaded hole to be cut and drilled by the adapter plate;

[0105] Step 2: after the working tool holder is installed on the auxiliary turnover trolley, the working tool holder is fixed to the adapter plate by the guide rod;

[0106] Step 3, adjust the position of the main shaft on the working tool holder, first install the cutting saw blade milling cutter, adjust the height position of the main shaft and the bolt to be cut, and cut the bolt to be cut by controlling the movement of the first slider;

[0107] Step 4, adjust the main shaft to the position of the bolt to be drilled by the first slider, install the drill bit, and realize the drilling operation on the bolt by the movement of the second slider.

[0108] Specifically, in step 1, the boss 140 of the adapter plate 100 is placed in the manhole 400, a few threaded holes with no thread biting are selected by rotating, and the adapter plate 100 is fixed by the connecting piece 120 to provide a reference working surface for the subsequent work holder 200; in step 2, the work holder 200 is installed on the rotating plate 330 of the auxiliary overturning trolley 300 through the protruding plate 214 on the frame 210, and is connected through the cooperation of the second positioning pin 340 and the second pin hole, which are in clearance fit, and the two guide rods 350 are respectively inserted into the guide hole and the first positioning hole (on the protruding plate 214), the auxiliary support beam 314 on the trolley 310 is extended to prevent the auxiliary overturning trolley 300 from falling, the extension of the second telescopic rod 380 is adjusted, the angle between the overturning support 320 and the trolley 310 is adjusted through the connecting rod 390, the main shaft 230 on the work holder 200 is rotated to align with the bolt to be cut, at this time, the position of the second positioning hole on the adapter plate 100 should also be matched with the position of the guide rod 350, after the guide rod 350 is inserted into the second positioning hole, the bearing with locking function in the guide hole is locked, and the extension of the first telescopic leg 316 and the second telescopic leg is controlled to adjust the position and angle of the work tool on the work holder 200 from two degrees of freedom (rotation of the work holder 200 itself and rotation of the overturning support 320) and height direction, at this time, the foot support of the universal Foma wheel is extended to fix the position of the auxiliary overturning trolley 300, and finally the work holder 200 is pushed by the first telescopic rod 360 to make the work holder 200 close to the adapter plate 100, so that the first positioning pin 130 on the adapter plate 100 limits and fixes the first bottom plate 211 to ensure the stability of the work tool on the work holder 200; in step 3, the height of the work holder 200 is adjusted through the first telescopic leg 316 and the second telescopic leg, and the main shaft 230 is aligned with the bolt to be cut through the rotation of the work holder 200 itself and the rotation of the overturning support 320, the cutting saw blade milling cutter (for cutting) is installed on the main shaft 230, the position of the second sliding block 260 is adjusted so that the cutting saw blade milling cutter is located at the position close to the root of the bolt to be cut, then the second sliding block 260 is locked, the first sliding block 240 is controlled to move to realize the cutting of the thread-biting bolt; in step 4, after the cutting is completed, the first sliding block 240 is adjusted to align the main shaft 230 with the bolt to be drilled (after cutting), the first sliding block 240 is locked, the drill bit is installed, the driving motor 220 and the second sliding block 260 are started to drive the drill bit to drill the cut bolt, and then the thread-biting bolt in the bolt hole can be taken out. By rotating the adapter plate 100 and the rotating plate 330, the thread-biting bolts at each angle around the manhole 400 can be cut, drilled and taken out. After all the thread-biting bolts are taken out, the work holder 200 is retracted in reverse according to the second step, the adapter plate 100 is removed, and the thread hole is repaired by the repair device.

[0109] In the present application, the terms "first" and "second" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise expressly specified.

[0110] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

[0111] The above are only preferred embodiments of the present application and are not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cutting and drilling apparatus for manhole bolts, characterized by, The cutting drilling device comprises: An adapter plate is fixedly connected to the outer edge of the manhole; A working tool holder comprises a rack, a driving motor and a main shaft arranged inside the rack, the main shaft is fixedly connected to a working tool, one end of the rack close to the main shaft is provided with a first sliding channel, a first bearing plate is connected to the first sliding channel through a first sliding block, the first bearing plate is arranged perpendicularly to the first sliding channel, the first bearing plate is provided with a second sliding channel, the driving motor is connected to the second sliding channel through a second sliding block, and one side of the rack close to the main shaft is arranged close to the adapter plate; An auxiliary turnover trolley comprises a trolley frame and a turnover support arranged on the trolley frame, the turnover support is connected to one side of the rack close to the driving motor, and the turnover support is used to keep the working tool holder and the adapter plate perpendicular; The adapter plate is provided with a first positioning pin, the rack comprises a first bottom plate, a second bottom plate and a support rod for connecting the first bottom plate and the second bottom plate, the first bottom plate is arranged close to the adapter plate, the first bottom plate is provided with a first pin hole, the adapter plate is connected to the first pin hole through the first positioning pin, the second bottom plate is connected to the turnover support, and the first bottom plate is provided with a first sliding channel; The second bottom plate is provided with a second pin hole, both sides of the first bottom plate and / or the second bottom plate are provided with a protruding plate, the protruding plate is located on both sides of the first sliding channel in the width direction, the protruding plate is provided with a first positioning hole, and the auxiliary turnover trolley further comprises: A rotating plate is arranged on the turnover support, the rotating plate is provided with a second positioning pin, the rotating plate is connected to the second pin hole through the second positioning pin, the rotating plate is further provided with a guide hole, the guide hole is located at the edge of the rotating plate, and a pair of second positioning pins are located between a pair of guide holes; A guide rod passes through the first positioning hole and the guide hole in sequence; A motor and a speed reducer, the output shaft of the motor and the speed reducer passes through the turnover support, the output shaft of the motor and the speed reducer is fixedly connected to the rotating plate, is used to drive the rotation of the rotating plate, and the output shaft is connected to the turnover support through a bearing.

2. The manhole bolt cutting and drilling apparatus according to claim 1, wherein, The adapter plate comprises: A base plate comprises a circular plate and a connecting lug arranged on the circular plate, the connecting lug is provided with a connecting piece, the base plate is fixedly connected to the threaded hole of the outer edge of the manhole through the connecting piece; A boss is arranged on the base plate, the boss is in a circular shape, and the boss is matched with the manhole in a gap.

3. The manhole bolt cutting and drilling apparatus of claim 1, wherein, The adapter plate is further provided with a second positioning hole, and the guide rod passes through the second positioning hole.

4. The manhole bolt cutting and drilling apparatus of claim 1, wherein, One side of the rotating plate close to the turnover support is provided with a first telescopic rod, the fixed end of the first telescopic rod is fixedly connected to the rotating plate, the extending end of the first telescopic rod passes through the rotating plate, the first telescopic rod is located between a pair of second positioning pins, and the first telescopic rod is aligned with the second bottom plate.

5. The manhole bolt cutting and drilling apparatus of claim 1, wherein, The trolley frame comprises: A basic frame, one end of the basic frame is provided with a handrail, and the other end of the basic frame is hingedly connected with a turnover support; The first telescopic leg is arranged at the four corners of the base frame, and an end of the first telescopic leg away from the base frame is provided with a first walking wheel.

6. The manhole bolt cutting and drilling apparatus of claim 5, wherein, The vehicle frame further comprises: A pressing plate groove is arranged in a U shape, and the pressing plate groove is fixedly connected with the base frame, and an opening of the pressing plate groove faces the side of the first walking wheel; An auxiliary support beam comprises a vertical connecting beam and a second telescopic leg, the connecting beam is arranged in the opening of the pressing plate groove, a bolt is arranged on the pressing plate groove, and the bolt is used for fixing the connecting beam, and the second telescopic leg is provided with a second walking wheel on the side away from the connecting beam, and the second walking wheel is located on the same straight line as the first walking wheel.

7. The manhole bolt cutting and drilling apparatus of claim 5, wherein, The auxiliary turnover trolley further comprises: A second telescopic rod is arranged on the base frame, and the second telescopic rod is located on the center line of the base frame; A connecting rod is hingedly connected at one end to the extending end of the second telescopic rod and at the other end to the turnover support; The turnover support is hingedly connected with the vehicle frame.

8. A cutting drilling method of a manhole bolt, using the cutting drilling method obtained by the cutting drilling apparatus for a manhole bolt according to any one of claims 1 to 7, characterized by, The cutting and drilling method comprises: Positioning the threaded hole to be cut and drilled by an adapter plate; After a work tool holder is installed on the auxiliary turnover trolley, the adapter plate is fixed through a guide rod; The position of a main shaft on the work tool holder is adjusted, a cutting saw blade milling cutter is installed first, the height position of the main shaft and the bolt to be cut is adjusted, the bolt to be cut is cut through the movement of a first sliding block; The main shaft is adjusted to the position of the bolt to be drilled through the first sliding block, a drill bit is installed, and the drilling operation on the bolt is realized through the movement of a second sliding block.

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