A quick-change tool for live-working robots

Abstract

The invention provides a quick-change tool for a live working robot, including a mother disk and a tool platform; the mother disk is provided with a circular flange on the top for connecting with the robot end flange; the mother disk is provided with a transmission assembly, and the transmission assembly is connected to the robot's power unit; the tool platform is provided with a plurality of tool positions for placing working tools; each working tool is provided with a sub-disk docking with the mother disk on the top; the sub-disk is provided with a power transmission shaft for transmitting power to control the working tool, and the power transmission shaft is connected to the transmission assembly. The invention provides a quick-change tool for a live working robot, which can not only realize the switching of the robot end tool, but also fix the power source of the stripping tool, the spark-making tool, etc. to the robot end, so that the tool side is only a mechanical mechanism, so that the quick-change tool does not need to connect the power supply from the robot end to the tool side, making the tool safer during operation.

Description

Technical Field

[0001] The invention belongs to the field of robot quick-change tools, and in particular relates to a quick-change tool for a live-working robot. Background Art

[0002] In general live-working robots, when the robot is stripping live cables, the stripping tool is fixed to the robot end plate by screws, etc. When the stripping tool fails, not only is it inconvenient to remove the stripping tool from the live cable, but also because the robot and the stripping tool are fixedly connected, the robot may also be restricted to the live cable, which will cause a very large safety hazard. This is also an important reason why live-working robots have not been popularized so far. In addition, the stripping tools or fire-starting tools mentioned above require power sources to work, such as a motor for stripping tools and two tightening machines for fire-starting tools. These two tools are live equipment and require power cables from the robot end to the tools, which is also unsafe. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects existing in the above-mentioned prior art and proposes a quick-change tool for a live working robot.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A quick-change tool for a live-working robot, comprising a master plate and a tool platform;

[0006] A circular flange is provided on the top of the master plate for connecting with the end flange of the robot; a transmission assembly is provided inside the master plate, and the transmission assembly is connected to the power unit of the robot;

[0007] The tool platform is provided with a plurality of tool positions for placing working tools; each working tool is provided with a sub-disc docking with the mother disk on the top;

[0008] The sub-disc is provided with a power transmission shaft for transmitting power to control the operation of the working tool, and the power transmission shaft is connected to the transmission assembly.

[0009] Furthermore, the sub-disk includes a fixing ring and a clamping ring;

[0010] The fixing ring is used to be fixedly connected to the top of the transmission seat of the working tool; the clamping ring and the fixing ring are both semicircular in shape, and the two have the same axis; one end of the clamping ring is installed on the transmission seat through a rotating shaft, so that relative movement can be generated between the clamping ring and the fixing ring;

[0011] The power transmission shaft is fixedly connected via a bearing and a retaining ring transmission seat.

[0012] Furthermore, an opening is provided at the non-fixed end of the clamping ring; a pin is provided at one end of the fixing ring, one end of the pin passes through the opening on the clamping ring and is fixedly connected to the fixing ring, and the other end is used to constrain the clamping ring; a first spring is also passed through the pin, and the first spring is located between the clamping ring and the fixing ring;

[0013] Because the hole diameter of the opening on the clamping ring is smaller than the diameter of the end of the pin away from the fixing ring.

[0014] Furthermore, the clamping ring is provided with a pin hole, and a stop pin is correspondingly provided in the pin hole; one side of the bottom of the stop pin extends outward to form a connecting portion, and an adjusting protrusion is extended upward at one end of the connecting portion away from the stop pin body, and an arc-shaped chamfer is provided on the edge of the adjusting protrusion;

[0015] The clamping ring is also provided with a fan-shaped boss, and a round hole corresponding to the stop pin body is provided on the fan-shaped boss; a second spring is provided at the bottom of the stop pin to make one end of the stop pin extend out of the round hole;

[0016] The tool seat is provided in the tool position, and a fixing pin for fixing the transmission seat is provided on the tool seat; a locking ring for controlling the adjusting boss is also provided on one side of the tool seat; a driving unit for driving the locking ring to rotate is provided correspondingly to a plurality of the locking rings. The locking ring is used to press the sub-disk.

[0017] Furthermore, the width of the fan-shaped boss is not greater than the distance between the stop pin body and the adjusting boss; the width of the clamping ring is greater than the width of the fan-shaped boss, and the difference between the two is not less than the width of the adjusting boss;

[0018] The height of the adjusting protrusion is not less than the height of the portion of the stop pin that passes through the circular hole.

[0019] Furthermore, the transmission assembly includes a mounting seat, a power input shaft, a power connecting shaft, a transition shaft, and a transmission connecting shaft;

[0020] The power input shaft is installed on the mounting seat; the power connecting shaft is fixedly connected to the power input shaft; the transition shaft is connected to the power connecting shaft by screws;

[0021] The transmission connection shaft is installed in the transition shaft through a stop cover and mounting screws; the transmission connection shaft is also provided with a circumferential outer edge in the radial direction to prevent it from slipping out of the stop cover;

[0022] A connecting shaft spring is provided between the transition shaft and the transmission connecting shaft; a guide shaft is provided on the outer periphery of the transition shaft, the guide shaft is mounted on the mounting seat by screws, and the guide shaft is coaxially arranged with the transition shaft and the transmission connecting shaft;

[0023] The transmission connecting shaft is also provided with a guide key for limiting it to slide vertically up and down only in the transition shaft; the blocking cover is provided with a keyway for limiting the relative rotation between the transmission connecting shaft and the transition shaft;

[0024] The transmission connecting shaft is connected to the power transmission shaft.

[0025] Furthermore, the guide shaft is provided with an annular groove corresponding to the fan-shaped protrusion; one side of the guide shaft is also provided with an annular groove corresponding to the stop pin;

[0026] A stop block is also provided on the guide shaft; and a stop block groove corresponding to the stop block is provided on the transmission seat.

[0027] Furthermore, a quick-change protective cover is provided on the outer side of the guide shaft, and the quick-change protective cover is fixedly connected to the mounting seat by screws.

[0028] Furthermore, an adjustment gasket is provided between the locking ring and the tool platform.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The number of robots for live-line operations can be reduced. One robot can switch between multiple work tools and perform different live-line operations. Moreover, the quick-change tool installs the power source of the work tool end on the robot end, so that multiple different tools can share a power source. The power source is separated from the tool, which is safer during operation. Even if the work tool fails during operation, the robot can be easily separated from the tool by pressing down one end of the quick-change tool stop pin to separate the quick-change tool mother plate and the child plate. The work tool can then be removed through the insulating operating rod, without the situation where both the robot and the tool are hung on the live cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 A 3D diagram of a quick-change tool platform and two working tools according to an embodiment of the present invention;

[0033] Figure 2 A 3D diagram of a power source and a quick-change tool master installed on the robot end flange according to an embodiment of the present invention;

[0034] Figure 3 A partial cross-sectional view of a power source and a quick-change tool master plate installed on the robot end flange according to an embodiment of the present invention;

[0035] Figure 4 It is an enlarged view of a partial cross-sectional view M of a quick-change tool master disc at a robot end according to an embodiment of the present invention;

[0036] Figure 5The quick-change tool platform seat and the working tool sub-plate described in the embodiment of the present invention;

[0037] Figure 6 A cross-sectional view of a sub-disc A_A of a working tool according to an embodiment of the present invention;

[0038] Figure 7 One end of the stop pin of the sub-disk of the working tool and the exposed portion of the stop pin according to the embodiment of the present invention;

[0039] Figure 8 The working tool according to the embodiment of the present invention is placed on the tool platform;

[0040] Fig. 9 The tool master disc on the robot end according to the embodiment of the present invention is close to the tool platform;

[0041] Fig.10 The state of the robot-side tool mother disk when the child disk is inserted into the child disk according to the embodiment of the present invention;

[0042] Fig.11 The state in which the sub-disk clamping ring of the embodiment of the present invention clamps the mother disk when the locking ring rotates 90 degrees;

[0043] Fig.12 The state in which the stop pin is still pressed by the locking ring when the sub-disk clamping ring of the embodiment of the present invention clamps the mother disk when the locking ring rotates 90 degrees;

[0044] Fig.13 The state of the sub-disc clamping ring described in the embodiment of the present invention when the stop pin is released when the locking ring rotates 90+2 degrees (the stop pin rises under the action of the small spring, and the stop pin is stuck in the annular groove in the guide shaft of the tool mother disc at the robot end when the exposed part of the clamping ring is stuck);

[0045] Fig.14 When the locking ring of the embodiment of the present invention rotates to 180 degrees, it completely leaves the clamping ring, and the clamping ring is in an upward position due to the stop pin under the action of the small spring, and the stop pin is stuck in the annular groove in the mother disc guide shaft at the exposed part of the clamping ring, so that the clamping ring will not be separated from the guide shaft;

[0046] Fig.15 The stop pin described in the embodiment of the present invention;

[0047] Fig.16 The robot movement described in the embodiment of the present invention can take the working tool away from the tool platform;

[0048] Fig.17 This is the state when the connecting shaft collides with the power transmission shaft according to the embodiment of the present invention;

[0049] Fig.18This is the state when the connecting shaft and the power transmission shaft are normally connected according to the embodiment of the present invention;

[0050] Fig.19 This is the locking ring described in the embodiment of the present invention.

[0051] Description of reference numerals:

[0052] 1. Power input shaft; 2. Power connecting shaft; 3. Transition shaft; 4. Guide shaft; 401. Annular groove; 402. Annular groove; 5. Quick-change protective cover; 6. Mounting screw; 7. Transmission connecting shaft; 8. Stop block; 9. Guide key; 10. Block cover; 11. Connecting shaft spring; 12. Mounting seat; 13. Transmission seat; 14. Tool seat; 15. Tool platform; 16. Power transmission shaft; 17. Second spring; 18. Locking ring; 19. Stop pin; 191. The part of the stop pin exposed on the clamping ring; 192. Adjusting protrusion; 20. Clamping ring; 21. Rotating shaft; 22. First spring; 23. Fixing nut; 24. Pin shaft; 25. Fixing ring; 201. End face of clamping ring; 202. Fan-shaped boss; 251. End face of fixing ring; 26. Working tool; 27. Sub-disk. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation; be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] The power source and quick-change tool master plate installed on the robot end flange: see attached Figure 2 ; Figure 3 and Figure 4 This part is the power source of the working tool and the quick-change tool master. Figure 2 The circular flange at the middle and upper end can be installed on the end flange of the robot to move with the robot. This section mainly introduces the structure of the quick-change tool master plate. Figure 3 The enlarged view is shown. The power input shaft 1 is mounted on the mounting seat 12, the power connecting shaft 2 is mounted on the power input shaft 1 by screws, and the transition shaft 3 is mounted on the power connecting shaft 2 by screws. The transmission connecting shaft 7 is mounted in the transition shaft 3 by means of the baffle 10 and the mounting screws 6. The transmission connecting shaft 7 has a circumferential outer edge in the radial direction to prevent it from sliding out of the baffle 10. In order to allow the transmission connecting shaft 7 to slide vertically up and down in the transition shaft 3 only, a guide key 9 needs to be installed on the transmission connecting shaft 7. The guide key 9 can limit the relative rotation between the transmission connecting shaft 7 and the transition shaft 3 through the keyway on the baffle 10. There is a connecting shaft spring 11 between the transition shaft 3 and the transmission connecting shaft 7, which can keep the transmission connecting shaft 7 in the state shown in the figure when no external force is applied. A guide shaft 4 is arranged on the periphery of the transition shaft 3. The guide shaft 4 is mounted on the mounting seat 12 by screws, and the guide shaft 4 and the transition shaft 3; the transmission connecting shaft 7 are coaxially arranged. The guide shaft 4 has no contact with the transmission connection shaft 7, that is, there is no restriction between the two. The transmission connection shaft 7 can slide up and down in the guide shaft 4, and can also rotate arbitrarily on the guide shaft 4 together with the transition shaft 3. A stop block 8 is installed on the guide shaft 4. A quick-change protective cover 5 is installed on the outer side of the guide shaft 4, and the quick-change protective cover 5 is installed on the mounting seat 12 by screws. When the power input shaft 1 rotates, it will drive the power connection shaft 2 to rotate, so that the transition shaft 3 will also rotate together. Since the transmission connection shaft 7 is installed in the transition shaft 3 through the guide key 9 and the blocking cover 10, the transmission connection shaft 7 will also rotate at the same time. It’s just that when the transmission connection shaft 7 is subjected to force in the axial direction (the external force is greater than the spring force), it may move up and down in the vertical direction.

[0058] 15 quick-change tool platforms and tool trays, see attached Figure 5 ; Figure 6 . This part is a platform for placing working tools, and is also a platform for controlling the mechanism for engaging or separating the mother plate and the daughter plate. The platform seat shown in the example has a total of 6 tool positions, and each tool position has the same mechanism control. The main function of the mechanism control is to control the mechanism for engaging or separating the mother plate and the daughter plate. An important part in the mechanism is the locking ring 18. The locking ring 18 can rotate within the plane of the tool platform 15. There are a total of 6 locking rings 18 in the tool platform 15, and the locking rings 18 correspond to adjacent tool positions one by one. The locking ring 18 is controlled by a set of devices, so the locking rings 18 at the 6 positions move or remain stationary at the same time. The main structure of the sub-disk is introduced below: the fixing ring 25 is installed on the transmission base 13 by screws and is fixed; the clamping ring 20 is installed on the transmission base 13 by 2 rotating shafts 21, and at the same time, one end face of the clamping ring 20 is constrained by the pin 24, and the pin 24 is fixed to the fixing ring 25 by the fixing nut 23. A spring passes through the pin 24, and the spring can make the clamping ring 20 always be at one end of the pin 24. Because the opening on the clamping ring 20 is smaller than the diameter of one end of the pin 24, the clamping ring 20 will not be disengaged from the pin 24. If the clamping ring 20 is pushed toward the central power transmission shaft 16 with force, the clamping ring 20 will rotate around the 2 rotating shafts 21 until it is blocked by one end face on the fixing ring 25. A stop pin 19 is installed in the clamping ring 20. The stop pin 19 can slide up and down in the corresponding hole of the clamping ring 20. The stop pin 19 is supported by the second transmission spring 17 and is always kept on the upper end surface of the clamping groove, that is, the exposed part of the stop pin 19 on the clamping ring 20 is outside the clamping ring 20. When the exposed part of the stop pin 19 on the clamping ring 20 is subjected to force, it will be pressed into the clamping ring 20. When the external force is removed, the exposed part 191 of the stop pin on the clamping ring will automatically pop out again under the action of the force of the second transmission spring 17. One end of the stop pin 19 is integrated with the stop pin 19. When this end is pressed down by the locking ring 18, the exposed part of the stop pin 19 on the clamping ring 20 will be pressed into the clamping ring 20. When the locking ring 18 leaves one end of the stop pin 19, the exposed part 191 of the stop pin on the clamping ring will automatically pop out again under the action of the force of the second transmission spring 17. The power transmission shaft 16 is installed in the transmission seat 13 through a set of bearings and retaining rings. When the power transmission shaft 16 rotates, it controls the working tool to perform the corresponding work. When the mother plate and the sub-plate are engaged, the power transmission shaft 16 and the transmission connecting shaft 7 are connected together. Because the connection ends of the two shafts are specially designed, both can transmit power regardless of whether the transmission connecting shaft 7 rotates forward or reverse. At the moment when the mother plate and the sub-plate are engaged, the connection ends of the power transmission shaft 16 and the transmission connecting shaft 7 may touch each other, such as Fig.17Therefore, a connecting shaft spring 11 is designed at the transmission connecting shaft 7. When the two shafts touch each other, the transmission connecting shaft 7 will compress the connecting shaft spring 11 to cause displacement without damaging both. When the transmission connecting shaft 7 rotates (regardless of forward or reverse rotation), the connecting ends of the two shafts will be normally connected together, such as Fig.18 The tool seat 14 is mounted on the tool platform 15 by screws. The transmission seat 13 is a part of the working tool. When the working tool is placed on the tool platform 15 , the transmission seat 13 is positioned by two pins on the tool seat 14 .

[0059] Figure 8 This is the placement state of the working tool on the tool platform 15. At this time, the clamping ring 20 in the sub-disk is in an open state under the action of the spring force, and the position of the locking ring 18 at this time is set to the 0 degree position;

[0060] Fig. 9 It is the state when the tool mother plate on the robot end is close to the child plate;

[0061] Fig.10 This is the state when the tool mother disk on the robot end is inserted into the daughter disk. When the mother disk is inserted into the daughter disk, the guide shaft 4 in the mother disk first enters the daughter disk, is coaxial with and engages with the transmission seat 13 in the daughter disk, and the stop block 8 installed in the guide shaft 4 enters the stop block 8 groove in the transmission seat 13 to prevent the mother disk from rotating in the daughter disk.

[0062] Fig.11 This is the state when the sub-disk clamping ring 20 is clamped. At this time, the position of the locking ring 18 is 90 degrees, which is 90 degrees rotated compared with the previous state. Under the action of the locking ring 18, the clamping ring 20 holds the guide shaft 4 tightly. At this time, the upper end face of the clamping ring 20 is in contact with the upper face of the fixing ring 25, and the fan-shaped boss 202 on the clamping ring 20 is just clamped in the annular groove 4 of the guide shaft 4, and the spring is in the maximum compression state.

[0063] Fig.12 This is the state when the sub-disk clamping ring 20 clamps the mother disk when the locking ring 18 rotates 90 degrees and the stop pin 19 is still pressed by the locking ring 18. At this time, the locking ring 18 presses one end of the stop pin 19, and the part of the stop pin 19 exposed on the clamping ring 20 has not yet entered the annular groove 4 in the mother disk guide shaft 4.

[0064] Fig.13 This is the state when the stop pin 19 is released when the sub-disk clamping ring 20 rotates more than 90 degrees by the locking ring 18. At this time, part of one end of the stop pin 19 is not pressed by the locking ring 18, and the locking ring 18 completely supports the clamping ring 20, so that the upper end surface of the clamping ring 20 is kept in contact with the upper end surface of the fixing ring 25, and the stop pin 19 rises under the action of the second transmission spring 17, and the exposed part of the stop pin 19 in the clamping ring 20 is just stuck in the annular groove 4 of the guide shaft 4 of the tool mother disk at the robot end.

[0065] Fig.14 When the locking ring 18 rotates to 180 degrees, it completely leaves the clamping ring 20, and the clamping ring 20 is in an ascending position due to the stop pin 19 under the action of the second transmission spring 17. The stop pin 19 is stuck in the annular groove 4 of the mother disk guide shaft 4 when the clamping ring 20 is exposed, so that the clamping ring 20 will not be separated from the guide shaft 4, that is, the mother disk and the sub-disk complete the locking action.

[0066] Fig.15 This is the state when the robot can take the working tool away from the tool platform 15 when moving.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-change tool for a live-working robot, characterized in that: It includes a master disk and a tool platform (15); A circular flange is provided on the top of the master plate for connecting with the end flange of the robot; a transmission assembly is provided inside the master plate, and the transmission assembly is connected to the power unit of the robot; The tool platform (15) is provided with a plurality of tool positions for placing working tools (26); a sub-disc (27) docking with a mother disk is provided on the top of each working tool; The sub-disc is provided with a power transmission shaft (16) for transmitting power to control the operation of the working tool, and the power transmission shaft (16) is connected to the transmission assembly; The sub-disc comprises a fixing ring (25) and a clamping ring (20); The fixing ring (25) is used for fixing and connecting with the top of the transmission seat (13) of the working tool; the clamping ring (20) and the fixing ring (25) are both semicircular in shape and have the same axis; one end of the clamping ring (20) is installed on the transmission seat (13) through a rotating shaft (21), so that the clamping ring (20) and the fixing ring (25) can generate relative movement; The clamping ring (20) is provided with a pin hole, and a stop pin (19) is correspondingly provided in the pin hole; one side of the bottom of the stop pin (19) extends outward to form a connecting portion, and an end of the connecting portion away from the stop pin (19) body extends upward to be provided with an adjusting protrusion (192), and an arc chamfer is provided on the edge of the adjusting protrusion (192); The clamping ring (20) is also provided with a fan-shaped boss (202), and the fan-shaped boss (202) is provided with a circular hole corresponding to the body of the stop pin (19); a second spring (17) is provided at the bottom of the stop pin (19) so that one end of the stop pin (19) extends out of the circular hole; the mother disc is also provided with an annular groove (402) corresponding to the fan-shaped boss (202) and an annular groove (401) corresponding to the stop pin; The power transmission shaft (16) is fixedly connected via a bearing and a retaining ring transmission seat (13); The non-fixed end of the clamping ring (20) is provided with an opening; one end of the fixing ring (25) is provided with a pin shaft (24), one end of the pin shaft (24) passes through the opening on the clamping ring (20) and is fixedly connected to the fixing ring (25), and the other end is used to constrain the clamping ring (20); a first spring (22) is also passed through the pin shaft (24), and the first spring (22) is located between the clamping ring (20) and the fixing ring (25); The diameter of the opening on the clamping ring (20) is smaller than the diameter of the end of the pin (24) away from the fixing ring (25); A tool seat (14) is provided in the tool position, and a fixing pin for fixing the transmission seat (13) is provided on the tool seat (14); a locking ring (18) for controlling the adjustment protrusion (192) is also provided on one side of the tool seat (14); and a driving unit for driving the locking ring (18) to rotate is correspondingly provided on a plurality of the locking rings (18); The width of the fan-shaped boss (202) is not greater than the distance between the stop pin (19) body and the adjusting protrusion (192); the width of the clamping ring (20) is greater than the width of the fan-shaped boss (202), and the difference between the two is not less than the width of the adjusting protrusion (192); The height of the adjusting protrusion (192) is not less than the height of the portion of the stop pin (19) that passes through the circular hole; The transmission assembly comprises a mounting seat (12), a power input shaft (1), a power connecting shaft (2), a transition shaft (3), and a transmission connecting shaft (7); The power input shaft (1) is mounted on a mounting seat (12); the power connecting shaft (2) is fixedly connected to the power input shaft (1); and the transition shaft (3) is connected to the power connecting shaft (2) via screws; The transmission connection shaft (7) is installed in the transition shaft (3) through a stop cover (10) and a mounting screw (6); the transmission connection shaft (7) is also provided with a circumferential outer edge in the radial direction to prevent it from slipping out of the stop cover (10); A connecting shaft spring (11) is provided between the transition shaft (3) and the transmission connecting shaft (7); a guide shaft (4) is provided on the outer periphery of the transition shaft (3); the guide shaft (4) is mounted on a mounting seat (12) by means of screws, and the guide shaft (4) is coaxially arranged with the transition shaft (3) and the transmission connecting shaft (7); The transmission connection shaft (7) is also provided with a guide key (9) for limiting it to be able to slide vertically up and down only in the transition shaft (3); the blocking cover (10) is provided with a keyway for limiting the relative rotation between the transmission connection shaft (7) and the transition shaft (3); The transmission connecting shaft (7) is connected to the power transmission shaft (16); The annular groove (401) and the annular groove (402) are both arranged on the outside of the guide shaft (4); The guide shaft (4) is also provided with a stop block (8); the transmission seat (13) is provided with a stop block groove corresponding to the stop block (8); A quick-change protective cover (5) is also provided on the outer side of the guide shaft (4), and the quick-change protective cover (5) is fixedly connected to the mounting seat (12) by screws; An adjustment gasket is also provided between the locking ring (18) and the tool platform (15).

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