Trephine capable of quickly adjusting cutter group locking device

Abstract

The utility model discloses a trephine capable of quickly adjusting a cutter group locking device, which relates to the field of electric tools, a clutch transmission wheel is arranged in an openable head shell, a transmission convex ring II is arranged on the clutch transmission wheel and is arranged in a driving concave ring at the side part of a trephine blade, the clutch transmission wheel is arranged in the openable head shell, and the transmission convex ring II is arranged on the transmission convex ring II and is arranged in a driving concave ring at the side part of the trephine blade. The clutch transmission wheel is fixed on the clutch frame, the clutch frame is arranged in a movable cavity of the openable head shell, one end of the clutch frame is connected with the openable head shell through a positioning pin I, and the other end of the clutch frame is connected with the left-right tightness adjusting device through a positioning screw rod I. An adjusting seat is arranged in an upper linear guide groove and a lower linear guide groove of a main head shell, an upper guide column, a lower guide column and an adjusting screw rod are arranged on the adjusting seat, and the adjusting seat is driven to move forwards or backwards by shifting the adjusting screw rod. When the adjusting base moves forwards or backwards, the first front guide wheel set and the second front guide wheel set on the adjusting base can be erected or folded along with the inner side circle of the trephine blade, and adjustment is very convenient.

Description

Technical Field:

[0001] The utility model relates to a ring saw with a quick-adjusting cutter group locking device, belonging to the technical field of power tools. Background Art:

[0002] At present, most existing construction sites use concrete cutting equipment to cut materials such as concrete and wood. However, the concrete cutting equipment is less portable when carried, and during the operation of the concrete cutting equipment, since the cutting effect is greatly affected by the skills of workers, the stability and accuracy of cutting cannot be guaranteed. At the same time, the concrete cutting equipment is easily impacted during the cutting process, thereby damaging the cutting blade, shortening its service life, and even possibly causing harm to the operator, with relatively large potential safety hazards.

[0003] Due to the large defects in the operation of the existing concrete cutting equipment at the construction site, a ring saw has been introduced as needed. The ring saw is relatively easy to operate and less affected by the skills of workers. However, after long-term operation, the left and right sides of the cutter group of the existing ring saw are prone to wear, the adjustment method is extremely cumbersome, and the existing ring saw blade has no clutch device and directly forces cutting. When encountering hard cutting, it cannot automatically reset, reducing the service life of the ring saw blade. During long-term high-intensity work and operation, the inner ring of the ring saw blade is prone to break away from the front guide wheel group and move backward, and the existing products cannot be quickly adjusted and fixed. Therefore, how to overcome the above existing technical problems and defects has become a key problem to be solved. Summary of the Utility Model:

[0004] Aiming at the above problems, the technical problem to be solved by the utility model is to provide a ring saw with a quick-adjusting cutter group locking device.

[0005] The ring saw with a quick-adjusting cutter group locking device of the utility model comprises a ring saw blade, a ring saw head shell, a transmission wheel, a clutch transmission wheel, a clutch frame, a left and right tension adjustment device, a guide plate, a box body, a power host, and a handle. The center of the ring saw blade is designed as a hollow large circle. The ring saw blade is arranged in the ring saw head shell. The ring saw head shell is composed of a main head shell and an openable head shell. The main head shell and the openable head shell are connected by a connecting column. A transmission wheel is arranged in the main head shell. A first transmission convex ring is arranged on the transmission wheel and is arranged in the driving concave circle on the side of the ring saw blade. A clutch transmission wheel is arranged in the openable head shell. A second transmission convex ring is arranged on the clutch transmission wheel. The clutch transmission wheel is fixed on the clutch frame. The clutch frame is arranged in the movable cavity of the openable head shell. One end of the clutch frame is connected to the openable head shell through a first positioning pin. The other end of the clutch frame is connected to the left and right tension adjustment device through a first positioning screw. The inner side of the openable head shell is connected with a guide plate through several screws. An output shaft is arranged in the middle of the transmission wheel. One end of the output shaft is connected to the box body. The box body is connected to the power host. One end of the power host is connected with a handle.

[0006] Preferably, an adjusting seat is provided at the front end of the main head shell. At the relative positions of the inner sides of the front ends of the adjusting seat and the inner ring of the annular saw blade, a first leading wheel group and a second leading wheel group are provided. An upper guiding through hole and a lower guiding through hole are provided on the adjusting seat. An upper guiding post and a lower guiding post are respectively arranged in the upper guiding through hole and the lower guiding through hole. The front and rear ends of the upper guiding post and the lower guiding post are respectively fixed on the positioning convex walls of the main head shell. Spiral dust-proof soft sleeves are sleeved on both the upper guiding post and the lower guiding post. An adjusting screw hole is provided in the middle of the adjusting seat. A first threaded sleeve, a buffer spring and an adjusting screw are arranged in the adjusting screw hole and fixed by a dust-proof cover. One end of the adjusting screw is screwed onto the front positioning threaded hole wall of the main head shell. The other end of the adjusting screw passes through the buffer spring and is screwed onto the rear positioning threaded hole wall of the main head shell and limited by a fixing nut. A spiral dust-proof soft sleeve is sleeved on the adjusting screw.

[0007] Preferably, one end of the connecting column is fixedly connected to the openable head shell. The other end of the connecting column is provided with an external thread and is screwed and fixed to the threaded column inside the main head shell through the connecting hole in the middle of the guide plate.

[0008] Preferably, the left and right tension adjusting device is composed of a second threaded sleeve, a positioning sleeve, a clutch spring, a threaded rod, a connecting head and a second positioning screw. The second threaded sleeve is screwed and fixed in the connecting through hole of the openable head shell. The inner wall of the second threaded sleeve is provided with an internal thread. A positioning sleeve is provided at the front end of the second threaded sleeve. A clutch spring is arranged inside the positioning sleeve. The threaded rod is screwed in the second threaded sleeve. The front end of the threaded rod abuts against one end of the clutch spring. A knob is arranged at the rear end of the threaded rod. A connecting head is fixed at the front end of the positioning sleeve. The other end of the clutch spring is arranged on the pin head of the connecting head and fixed by the second positioning screw.

[0009] Preferably, a handle is provided outside the box body. A water baffle is connected to the lower end of the handle. First guide wheels are provided at both lower ends of the water baffle.

[0010] Preferably, a protective cover is provided at the upper end of the annular saw head shell. Second guide wheels are provided at both upper ends of the protective cover.

[0011] Preferably, one end of the openable head shell is provided with a first pin sleeve, which is designed to be offset from the second pin sleeve on the box body and connected by a second positioning pin.

[0012] Advantages of the present utility model: It has a reasonable structural design, is easy to install and use. By arranging an adjusting seat in the upper and lower linear guide grooves of the main head shell, and arranging upper and lower guide posts and an adjusting screw on the adjusting seat, the adjusting seat can be driven to move forward or backward by turning the adjusting screw. When the adjusting seat moves forward or backward, the first front guide wheel set and the second front guide wheel set on the adjusting seat will also be raised or lowered along the inner circle of the annular saw blade, which is extremely convenient for adjustment. At the same time, the buffer spring has a buffering effect. By arranging a left-right tightening adjustment device on one side of the openable head shell, when the annular saw blade is worn, only by adjusting the knob can the clutch drive wheel be pushed inward to complete the connection, and the adjustment method is more convenient, improving the service life of the annular saw. BRIEF DESCRIPTION OF THE DRAWINGS:

[0013] For ease of explanation, the present utility model will be described in detail by the following specific embodiments and accompanying drawings.

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the annular saw head shell of the present utility model after being opened;

[0016] Figure 3 is a side view of the annular saw head shell of the present utility model after being opened;

[0017] Figure 4 is a schematic partial structural diagram of the annular saw head shell of the present utility model after being opened;

[0018] Figure 5 is Figure 4 exploded view of; [[ID=2--]]

[0019] Figure 6 is a schematic installation structural diagram of the main head shell of the present utility model;

[0020] Figure 7 is a partial top view of the present utility model;

[0021] Figure 8 is a partial side view of the present utility model;

[0022] Figure 9 is a schematic installation structural diagram of the drive wheel, clutch drive wheel and annular saw blade of the present utility model;

[0023] Figure 10 is Figure 9 rear view of;

[0024] Figure 11 is a schematic installation structural diagram of the clutch frame and the openable head shell of the present utility model;

[0025] Figure 12 isFigure 11 Schematic diagram of the rotated structure;

[0026] Figure 13 is Figure 11 rear view of;

[0027] Figure 14 Installation exploded view of the left - right tension adjustment device and the openable head shell in the present utility model;

[0028] Figure 15 Schematic diagram of the installation structure of the adjustment seat in the present utility model;

[0029] Figure 16 Schematic diagram of the installation structure of the main head shell and the openable head shell in the present utility model;

[0030] Figure 17 Partial exploded view of the adjustment seat in the present utility model.

[0031] 1 - annular saw blade; 101 - driving concave ring; 2 - annular saw head shell; 201 - main head shell; 2011 - positioning convex wall; 2012 - front positioning threaded hole wall; 2013 - rear positioning threaded hole wall; 2014 - threaded column; 202 - openable head shell; 2021 - movable cavity; 2022 - connecting through - hole; 2023 - pin sleeve one; 203 - connecting column; 3 - transmission wheel; 301 - transmission convex ring one; 302 - output shaft; 4 - clutch transmission wheel; 401 - transmission convex ring two; 5 - clutch frame; 501 - positioning pin one; 502 - positioning screw one; 6 - left - right tension adjustment device; 601 - threaded sleeve two; 6011 - internal thread; 602 - positioning sleeve; 603 - clutch spring; 604 - threaded rod; 6041 - knob; 605 - connecting head; 606 - positioning screw two; 7 - guide plate; 8 - box body; 801 - pin sleeve two; 9 - power main engine; 10 - handle; 11 - adjustment seat; 1101 - front guide wheel set one; 1102 - front guide wheel set two; 1103 - upper guiding through - hole; 1104 - lower guiding through - hole; 1105 - adjustment screw hole; 11051 - threaded sleeve one; 12 - upper guiding column; 13 - lower guiding column; 14 - spiral dust - proof soft sleeve; 15 - buffer spring; 16 - adjustment screw; 17 - dust - proof cover; 18 - handle; 19 - water - retaining plate; 1901 - guide wheel one; 20 - protection cover; 2001 - guide wheel two; 21 - positioning pin two. Specific embodiments:

[0032] As Figures 1 - 17As shown, this specific embodiment adopts the following technical solutions: it includes a ring saw blade 1, a ring saw head shell 2, a transmission wheel 3, a clutch transmission wheel 4, a clutch frame 5, left and right tension adjustment devices 6, a guide plate 7, a box 8, a power main unit 9, and a handle 10. The center of the ring saw blade 1 is designed as a hollow large circle. The ring saw blade 1 is arranged in the ring saw head shell 2. The ring saw head shell 2 is composed of a main head shell 201 and an openable head shell 202. The main head shell 201 and the openable head shell 202 are connected by a connecting column 203. A transmission wheel 3 is provided in the main head shell 201, and a transmission convex ring 301 is provided on the transmission wheel 3, and is arranged in a driving concave ring 101 on the side of the ring saw blade 1, and the ring saw blade 1 is driven to rotate by the transmission wheel 3. Cutting, a clutch transmission wheel 4 is provided in the openable head shell 202, and a transmission cam 2 401 is provided on the clutch transmission wheel 4. The clutch transmission wheel 4 is fixed on the clutch frame 5, and the clutch frame 5 is provided in the movable cavity 2021 of the openable head shell 202. One end of the clutch frame 5 is connected to the openable head shell 202 through a positioning pin 501, and the other end of the clutch frame 5 is connected to the left and right tension adjustment devices 6 through a positioning screw 502. The inner side of the openable head shell 202 is connected with a guide plate 7 through several screws. An output shaft 302 is provided in the middle of the transmission wheel 3, and one end of the output shaft 302 is connected to the box body 8, and the box body 8 is connected to the power main unit 9. One end of the power main unit 9 is connected with a handle 10.

[0033] An adjustment seat 11 is provided at the front end of the main head shell 201, and a front guide wheel group 1 1101 and a front guide wheel group 2 1102 are provided on the inner side of the front end of the adjustment seat 11 relative to the inner circle of the ring saw blade 1. An upper guide through hole 1103 and a lower guide through hole 1104 are provided on the adjustment seat 11, and an upper guide column 12 and a lower guide column 13 are respectively provided in the upper guide through hole 1103 and the lower guide through hole 1104. The front and rear ends of the upper guide column 12 and the lower guide column 13 are respectively fixed on the positioning convex wall 2011 of the main head shell 201, and a spiral dustproof soft cover 14 is sleeved on the upper guide column 12 and the lower guide column 13. The adjustment seat 11 can move back and forth on the upper guide column 12 and the lower guide column 13. An adjustment screw hole 1105 is provided in the middle of the adjustment seat 11. A threaded sleeve 11051, a buffer spring 15 and an adjusting screw 16 are provided in 1105 and fixed by a dust cover 17. One end of the adjusting screw 16 is screwed to the front positioning threaded hole wall 2012 of the main head shell 201, and the other end of the adjusting screw 16 passes through the buffer spring 15 and is screwed to the rear positioning threaded hole wall 2013 of the main head shell 201, and is limited by a fixing nut. A spiral dustproof soft sleeve 14 is sleeved on the adjusting screw 16. The adjusting seat 11 is driven to move forward or backward by toggling the adjusting screw 16. When the adjusting seat 11 moves forward or backward, the front guide wheel group 1 1101 and the front guide wheel group 2 1102 on the adjusting seat 11 also follow the inner circle of the ring saw blade 1 to stand or close, which makes adjustment extremely convenient. At the same time, the addition of the buffer spring 15 has a buffering effect.

[0034] One end of the connecting column 203 is fixedly connected to the openable head shell 202, and the other end of the connecting column 203 is provided with an external thread, and passes through the connecting hole in the middle of the guide plate 7 and is screwed and fixed to the threaded column 2014 on the inner side of the main head shell 201. When the ring saw blade 1 is damaged, only one end of the connecting column 203 needs to be opened. At this time, the main head shell 201 and the openable head shell 202 can be opened, so that the ring saw blade 1 can be replaced.

[0035] The left and right tension adjustment device 6 is composed of a threaded sleeve 2 601, a positioning sleeve 602, a clutch spring 603, a threaded rod 604, a connector 605, and a positioning screw 2 606. The threaded sleeve 2 601 is screwed and fixed in the connecting through hole 2022 of the openable head shell 202. The inner wall of the threaded sleeve 201 is provided with an internal thread 6011. The front end of the threaded sleeve 2 601 is provided with a positioning sleeve 602. The clutch spring 603 is provided in the positioning sleeve 602. The threaded rod 604 is screwed in the threaded sleeve 2 601. The front end of the threaded rod 604 is against one end of the clutch spring 603. The rear end of the threaded rod 604 is provided with a knob 6041. The front end of the positioning sleeve 602 is fixed with a connector 605. The other end of the clutch spring 603 is provided on the pin head of the connector 605 and is fixed by the positioning screw 2 606. By toggling the knob 6041, the threaded rod 60 4 moves inward and outward, the threaded rod 604 moves inward in the threaded sleeve 2 601, the threaded rod 604 pushes the connecting head 605 to move inward, and the clutch frame 5 moves inward at the same time as the connecting head 605 moves, and the transmission convex ring 2 401 on the clutch transmission wheel 4 on the clutch frame 5 is connected for transmission with the driving concave ring 101 on the ring saw blade 1. When the ring saw blade 1 encounters hard stone during high-speed operation, the machine adopts self-protection, and the driving concave ring 101 on the ring saw blade 1 and the transmission convex ring 2 401 on the clutch transmission wheel 4 separate and jump to the idling warning, which can effectively protect the ring saw blade 1. At this time, the clutch spring 603 will automatically push the clutch transmission wheel 4 to connect with the ring saw blade 1, and warn the worker that he needs to change the place to groove. At the same time, the ring saw blade 1 will wear out after long-term work. Just adjust the knob 6041 to push the clutch transmission wheel 4 to move inward to complete the connection, and the adjustment method is more convenient.

[0036] A handle 18 is provided on the outside of the box body 8, and the lower end of the handle 18 is connected to a water baffle 19, and guide wheels 1901 are provided at both ends below the water baffle 19.

[0037] A protective cover 20 is provided at the upper end of the ring saw head shell 2, and guide wheels 2001 are provided at both ends above the protective cover 20.

[0038] One end of the openable head shell 202 is provided with a pin sleeve 1 2023, which is staggered with the pin sleeve 2 801 on the box body 8 and is connected through a positioning pin 21.

[0039] The specific implementation method has a reasonable structural design, simple installation and easy use. An adjustment seat is arranged in the upper and lower linear guide grooves of the main head shell, and upper and lower guide columns and an adjusting screw are arranged on the adjustment seat. The adjustment seat is driven to move forward or backward by toggling the adjusting screw. When the adjustment seat moves forward or backward, the front guide wheel group 1 and the front guide wheel group 2 on the adjustment seat also follow the inner circle of the ring saw blade to stand or close, which makes the adjustment extremely convenient. At the same time, the setting of the buffer spring has a buffering effect. By arranging left and right tension adjustment devices on one side of the openable head shell, when the ring saw blade is worn, only the adjustment knob needs to be adjusted to push the clutch transmission wheel to move inward to complete the connection. The adjustment method is more convenient, which improves the service life of the ring saw.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A circular saw with a quick-adjusting tool group locking device, characterized in that: It includes a hole saw blade (1), a hole saw head shell (2), a transmission wheel (3), a clutch transmission wheel (4), a clutch bracket (5), a left and right tension adjustment device (6), a guide plate (7), a box body (8), a power main engine (9), and a handle (10). The center of the hole saw blade (1) is designed as a hollow large circle. The hole saw blade (1) is arranged inside the hole saw head shell (2). The hole saw head shell (2) is composed of a main head shell (201) and an openable door head shell (202). The main head shell (201) and the openable door head shell (202) are connected by a connecting column (203). A transmission wheel (3) is arranged inside the main head shell (201). A first transmission convex ring (301) is arranged on the transmission wheel (3) and is inside the driving concave ring (101) on the side of the hole saw blade (1). A clutch transmission wheel (4) is arranged inside the openable door head shell (202). A second transmission convex ring (401) is arranged on the clutch transmission wheel (4). The clutch transmission wheel (4) is fixed on the clutch bracket (5). The clutch bracket (5) is arranged inside the movable cavity (2021) of the openable door head shell (202). One end of the clutch bracket (5) is connected to the openable door head shell (202) through a first positioning pin (501). The other end of the clutch bracket (5) is connected to the left and right tension adjustment device (6) through a first positioning screw (502). The guide plate (7) is connected to the inner side of the openable door head shell (202) through several screws. An output shaft (302) is arranged in the middle of the transmission wheel (3). One end of the output shaft (302) is connected to the box body (8). The box body (8) is connected to the power main engine (9). One end of the power main engine (9) is connected to the handle (10).

2. The annular saw of a quick-adjusting tool group locking device according to claim 1, characterized in that: An adjustment seat (11) is arranged at the front end of the main head shell (201). A first front guide wheel group (1101) and a second front guide wheel group (1102) are arranged at the relative positions of the inner side of the front end of the adjustment seat (11) and the inner ring of the hole saw blade (1). An upper guide through hole (1103) and a lower guide through hole (1104) are arranged on the adjustment seat (11). An upper guide post (12) and a lower guide post (13) are respectively arranged in the upper guide through hole (1103) and the lower guide through hole (1104). The front and rear ends of the upper guide post (12) and the lower guide post (13) are respectively fixed on the positioning convex wall (2011) of the main head shell (201). Spiral dust-proof soft sleeves (14) are sleeved on both the upper guide post (12) and the lower guide post (13). An adjustment screw hole (1105) is arranged in the middle of the adjustment seat (11). A first threaded sleeve (11051), a buffer spring (15), and an adjustment screw (16) are arranged in the adjustment screw hole (1105) and are fixed through a dust-proof cover (17). One end of the adjustment screw (16) is screwed into the front positioning threaded hole wall (2012) of the main head shell (201). The other end of the adjustment screw (16) passes through the buffer spring (15) and is screwed into the rear positioning threaded hole wall (2013) of the main head shell (201) and is limited by a fixing nut. A spiral dust-proof soft sleeve (14) is sleeved on the adjustment screw (16).

3. A circular saw with a quick-adjusting tool group locking device according to claim 1, characterized in that: One end of the connecting column (203) is fixedly connected to the openable head shell (202). The other end of the connecting column (203) is provided with an external thread and is screwed and fixed to the threaded column (2014) inside the main head shell (201) through the connecting hole in the middle of the guide plate (7).

4. A circular saw with a quick-adjusting tool group locking device according to claim 1, characterized in that: The left and right tightness adjusting device (6) is composed of a second threaded sleeve (601), a positioning sleeve (602), a clutch spring (603), a threaded rod (604), a connecting head (605), and a second positioning screw (606). The second threaded sleeve (601) is screwed and fixed in the connecting through hole (2022) of the openable head shell (202). The inner wall of the second threaded sleeve (601) is provided with an internal thread (6011). A positioning sleeve (602) is provided at the front end of the second threaded sleeve (601). A clutch spring (603) is arranged inside the positioning sleeve (602). The threaded rod (604) is screwed inside the second threaded sleeve (601). The front end of the threaded rod (604) abuts against one end of the clutch spring (603). A knob (6041) is arranged at the rear end of the threaded rod (604). The connecting head (605) is fixed at the front end of the positioning sleeve (602). The other end of the clutch spring (603) is arranged on the pin head of the connecting head (605) and is fixed by the second positioning screw (606).

5. A circular saw with a quick-adjusting tool group locking device according to claim 1, characterized in that: A handle (18) is arranged outside the box body (8). A water baffle (19) is connected to the lower end of the handle (18). Two guide wheels I (1901) are arranged at both lower ends of the water baffle (19).

6. A circular saw with a quick-adjusting tool group locking device according to claim 1, characterized in that: A protective cover (20) is arranged at the upper end of the annular saw head shell (2). Two guide wheels II (2001) are arranged at both upper ends of the protective cover (20).

7. A circular saw with a quick-adjusting tool group locking device according to claim 1, characterized in that: One end of the openable head shell (202) is provided with a first pin sleeve (2023), which is designed to be staggered from the second pin sleeve (801) on the box body (8) and is connected by a second positioning pin (21).

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