Multi-stage speed regulation bench drill structure

Abstract

The utility model provides a multistage speed regulation bench drill structure which comprises a main machine, a connecting shaft and a motor, the motor is fixed on the main machine, the connecting shaft is rotatably connected on the main machine, a power shaft of the motor is fixedly connected with a first gear wheel, the first gear wheel is provided with first gear grooves with various inner diameters, and the first gear wheel is fixedly connected with a second gear wheel. The connecting shaft is fixedly connected with a second gear wheel, the second gear wheel is provided with second gear grooves with various inner diameters, the main machine is rotatably connected with a linkage shaft, the linkage shaft is connected with a third gear wheel, the third gear wheel is provided with third gear grooves with various inner diameters, and the linkage shaft is connected with a second gear wheel. The first gear groove and the third gear groove are connected through a first belt, the second gear groove and the third gear groove are connected through a second belt, and the purpose of improving practicability is achieved.

Description

Technical Field

[0001] The utility model relates to a bench drill, in particular to a multi-stage speed-regulating bench drill structure. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN211990995U discloses a bench drill, which includes a base, a column and a workbench on the base, a cross arm on the column, a motor at one end of the cross arm, and a drill chuck at the other end that is rotatably provided and located above the workbench. The motor drives the drill chuck to rotate, and the drill chuck is provided with a drill bit. It also includes a silencer device, including a first silencer sleeve and a second silencer sleeve.

[0003] This bench drill achieves significant noise reduction by silencing the primary noise-generating component. The drill bit of this bench drill rotates via a connecting shaft. A shift wheel is fixedly connected to the motor's power shaft. The shift wheel has multiple shift slots of varying inner diameters. A belt is connected through the shift slots at one end and to a fixed wheel on the connecting shaft at the other end. Consequently, different speeds are achieved when the belt is connected to shift slots at different locations. Consequently, the speed adjustment range is limited, making it less practical. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a multi-stage speed-regulating bench drill structure, which increases the speed adjustment gears of the drill bit and achieves the purpose of improving practicality.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a multi-stage speed-regulating bench drill structure, including a main machine, a connecting shaft, and a motor, the motor is fixed on the main machine, the connecting shaft is rotatably connected to the main machine, the power shaft of the motor is fixedly connected to a first gear wheel, the first gear wheel is provided with a first gear slot with a variety of inner diameters, the connecting shaft is fixedly connected to a second gear wheel, the second gear wheel is provided with a second gear slot with a variety of inner diameters, the main machine is rotatably connected to a linkage shaft, the linkage shaft is connected to a third gear wheel, the third gear wheel is provided with a third gear slot with a variety of inner diameters, the first gear slot and the third gear slot are connected by a first belt, and the second gear slot and the third gear slot are connected by a second belt.

[0006] To implement the above technical solution, when the motor is started, the power shaft drives the first gear wheel to rotate, the first gear wheel rotates the third gear wheel through the first belt, the third gear wheel rotates the second gear wheel through the second belt, and the second gear wheel rotates the drill bit through the connecting shaft. The first belt is connected to the first gear slot and the third gear slot at different positions. At the same time, the second belt is connected to the third gear slot and the second gear slot at different positions, so that the drill bit can have more different speed gears, greatly improving practicality.

[0007] As a preferred solution of the present invention, an extension tube is fixedly connected to the side wall of the main machine, an extension rod is slidably connected in the extension tube, a baffle is fixedly connected to the extension rod, and the baffle is close to the drill bit.

[0008] To implement the above technical solution, the extension rod is moved along the length direction of the extension tube so that the position of the baffle corresponds to the position of the drill bit. Through the action of friction, the extension rod is automatically fixed on the extension tube, and the baffle can block the debris flying during the drilling process.

[0009] As a preferred solution of the present invention, the main machine is supported by a support column, a support base is slidably connected to the support column, and a support plate is fixedly connected to the support base.

[0010] To implement the above technical solution, the support base is moved along the length direction of the support column, and the support plate moves synchronously with the support base. The support plate can support parts to be drilled of different sizes, thereby improving practicality.

[0011] As a preferred solution of the present invention, a locking groove is provided on the support seat, and a first connecting part and a second connecting part are fixedly connected to the support seat. The first connecting part and the second connecting part are respectively located on both sides of the locking groove. A locking bolt is rotatably connected to the first connecting part, and the locking bolt is threadedly connected to the second connecting part.

[0012] To implement the above technical solution, move the support seat along the length direction of the support column, adjust the position of the support plate, and then tighten the locking bolt to make the second connection part move slightly toward the first connection part, so that the support seat clamps the support column, and the friction force generated realizes the positioning of the support seat.

[0013] As a preferred solution of the present invention, the support seat is rotatably connected to a first gear and a second gear, the support column is fixedly connected to a rack along its length direction, the first gear is meshed with the second gear, the second gear is meshed with the rack, and the first gear is fixedly connected to a handle.

[0014] To implement the above technical solution, the handle drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear moves along the length direction of the rack, so that the support seat can be moved along the length direction of the support column, which is easy to operate.

[0015] As a preferred solution of the present invention, a placement hole is provided on the inner wall of the third gear wheel, a connecting groove is provided on the inner wall of the placement hole, a connecting block is fixedly connected to the outer wall of the linkage shaft, the linkage shaft is inserted into the placement hole and the connecting block is placed in the connecting groove, and a support plate for supporting the third gear wheel is fixedly connected to the linkage shaft.

[0016] To implement the above technical solution, the third gear wheel is moved toward the direction close to the linkage shaft, the linkage shaft is inserted into the placement hole and the connecting block is placed in the connecting groove. When the third gear wheel rotates, the connecting block contacts the inner wall of the connecting groove, so that the linkage shaft rotates synchronously with the third gear wheel. By moving the third gear wheel away from the linkage shaft, it is easy to replace third gear wheels of different sizes, and the operation is simple.

[0017] As a preferred solution of the present invention, an anti-dropout sleeve is threadedly connected to the linkage shaft, and the anti-dropout sleeve is tightly pressed against the third gear wheel.

[0018] By implementing the above technical solution, the third gear wheel is not likely to escape from the linkage shaft during the process of rotating with the linkage shaft.

[0019] As a preferred solution of the present invention, a clamping plate is rotatably connected to the linkage shaft, an elastic member is connected between the clamping plate and the linkage shaft, a gear ring is fixedly connected to the anti-drop sleeve, and the end of the clamping plate is embedded in the gear ring.

[0020] To implement the above technical solution, the anti-slip sleeve is threadedly connected to the linkage shaft, and the end of the clamping plate is embedded in the gear ring through the elastic force of the elastic member. When the anti-slip sleeve rotates in the direction away from the linkage shaft, the limiting effect of the clamping plate prevents the anti-slip sleeve from rotating, thereby ensuring a stable connection between the third gear wheel and the linkage shaft. A force is applied to the clamping plate to rotate it, so that the clamping plate and the gear ring are separated, and the anti-slip sleeve can be removed from the linkage shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the external structure in the embodiment;

[0022] Figure 2 To reflect the position diagram of the linkage axis;

[0023] Figure 3 To reflect the structural diagram of the linkage shaft;

[0024] Figure 4 A schematic diagram showing the position of the support plate;

[0025] Figure 5 This is a schematic diagram showing the position of the pallet.

[0026] Figure numerals: 1. main engine; 11. connecting shaft; 12. second gear wheel; 13. second gear slot; 2. motor; 21. power shaft; 22. first gear wheel; 23. first gear slot; 3. linkage shaft; 31. third gear wheel; 32. third gear slot; 33. connecting block; 34. connecting slot; 35. support plate; 4. anti-slip sleeve; 41. clamping plate; 42. elastic member; 43. gear ring; 51. first belt; 52. second belt; 6. extension tube; 61. extension rod; 62. baffle; 7. support column; 71. support seat; 72. support plate; 73. locking slot; 81. first connecting part; 82. second connecting part; 83. locking bolt; 91. first gear; 92. second gear; 93. handle; 94. rack. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0028] A multi-speed adjustable bench drill structure includes a main unit 1, a connecting shaft 11, and a motor 2. The motor 2 is fixed to the main unit 1 and positioned vertically. The connecting shaft 11 is rotatably connected to the main unit 1 and is also arranged vertically. A power shaft 21 of the motor 2 is fixedly connected to a first gear wheel 22. The first gear wheel 22 is provided with a first gear slot 23 having various inner diameters. The first gear slot 23, the first gear wheel 22, and the power shaft 21 are coaxially arranged.

[0029] A second gear wheel 12 is fixedly connected to the connecting shaft 11. It is provided with a second gear slot 13 with various inner diameters. The second gear wheel 12, second gear slot 13, and connecting shaft 11 are coaxially arranged. A linkage shaft 3 is rotatably connected to the main engine 1. This linkage shaft 3 is located vertically between the connecting shaft 11 and the power shaft 21. A third gear wheel 31 is connected to the linkage shaft 3. It is provided with a third gear slot 32 with various inner diameters. The linkage shaft 3, third gear wheel 31, and third gear slot 32 are coaxially arranged.

[0030] A placement hole is defined on the inner wall of the third gear wheel 31, coaxially arranged with the third gear wheel 31. A connecting groove 34 is defined on the inner wall of the placement hole, and a connecting block 33 is fixedly connected to the outer wall of the linkage shaft 3. The linkage shaft 3 is inserted into the placement hole, with the connecting block 33 positioned in the connecting groove 34. A support plate 35 is fixedly connected to the linkage shaft 3 to support the third gear wheel 31.

[0031] A locking sleeve 4 is threaded onto the linkage shaft 3, abutting against the third gear wheel 31. A retaining plate 41 is rotatably connected to the end of the linkage shaft 3, with the rotation axis of the retaining plate 41 not coaxial with the linkage shaft 3. An elastic member 42, in the form of a spring, is connected between the retaining plate 41 and the linkage shaft 3. A toothed ring 43 is fixedly attached to the locking sleeve 4, and the elastic force of the elastic member 42 causes the end of the retaining plate 41 to engage with the toothed ring 43.

[0032] The first gear slot 23 and the third gear slot 32 are connected via a first belt 51 , and the second gear slot 13 and the third gear slot 32 are connected via a second belt 52 .

[0033] An extension tube 6 is fixedly connected to the side wall of the main body 1, and an extension rod 61 is slidably connected inside the extension tube 6, and there is friction between the extension rod 61 and the inner wall of the extension tube 6. A U-shaped baffle 62 is fixedly connected to the extension rod 61 and is close to the drill bit.

[0034] The main unit 1 is supported by a cylindrical support column 7, to which a support base 71 is slidably connected. A support plate 72 is fixedly connected to the support base 71. A locking groove 73 is defined in the support base 71, connecting the outer and inner walls of the support base 71. A first connecting portion 81 and a second connecting portion 82 are fixedly connected to the support base 71. The first and second connecting portions 81, 82 are respectively located on either side of the locking groove 73. A locking bolt 83 is rotatably connected to the first connecting portion 81 and is threadedly connected to the second connecting portion 82.

[0035] The locking bolt 83 is tightened to slightly move the second connection portion 82 toward the first connection portion 81 , so that the support base 71 can tighten the support column 7 to secure the support base 71 .

[0036] A first gear 91 and a second gear 92 are rotatably connected to the support base 71. A rack 94 is fixedly connected to the support column 7 along its length. The first gear 91 meshes with the second gear 92, and the second gear 92 meshes with the rack 94. A handle 93 is fixedly connected to the first gear 91 to facilitate movement of the support base 71 along the length of the support column 7.

[0037] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. A multi-stage speed regulating bench drill structure, comprising a main machine (1), a connecting shaft (11), and a motor (2), wherein the motor (2) is fixed to the main machine (1), the connecting shaft (11) is rotatably connected to the main machine (1), a power shaft (21) of the motor (2) is fixedly connected to a first gear wheel (22), and the first gear wheel (22) is provided with first gear slots (23) of various inner diameters, wherein: The connecting shaft (11) is fixedly connected to a second gear wheel (12), and the second gear wheel (12) is provided with second gear slots (13) with various inner diameters. The main machine (1) is rotatably connected to a linkage shaft (3), and the linkage shaft (3) is connected to a third gear wheel (31), and the third gear wheel (31) is provided with third gear slots (32) with various inner diameters. The first gear slot (23) and the third gear slot (32) are connected via a first belt (51), and the second gear slot (13) and the third gear slot (32) are connected via a second belt (52).

2. The multi-stage speed regulating bench drill structure according to claim 1, characterized in that: An extension tube (6) is fixedly connected to the side wall of the main machine (1), an extension rod (61) is slidably connected inside the extension tube (6), a baffle (62) is fixedly connected to the extension rod (61), and the baffle (62) is close to the drill bit.

3. The multi-stage speed regulating bench drill structure according to claim 1, characterized in that: The host (1) is supported by a support column (7), a support seat (71) is slidably connected to the support column (7), and a support plate (72) is fixedly connected to the support seat (71).

4. The multi-stage speed regulating bench drill structure according to claim 3, characterized in that: The support seat (71) is provided with a locking groove (73), and the support seat (71) is fixedly connected with a first connecting portion (81) and a second connecting portion (82), and the first connecting portion (81) and the second connecting portion (82) are respectively located on both sides of the locking groove (73), and the first connecting portion (81) is rotatably connected with a locking bolt (83), and the locking bolt (83) is threadedly connected to the second connecting portion (82).

5. The multi-stage speed regulating bench drill structure according to claim 4, characterized in that: The support seat (71) is rotatably connected to a first gear (91) and a second gear (92); the support column (7) is fixedly connected to a rack (94) along its length direction; the first gear (91) is meshed with the second gear (92); the second gear (92) is meshed with the rack (94); and the first gear (91) is fixedly connected to a handle (93).

6. The multi-stage speed regulating bench drill structure according to claim 1, characterized in that: A placement hole is provided on the inner wall of the third gear wheel (31), a connecting groove (34) is provided on the inner wall of the placement hole, a connecting block (33) is fixedly connected to the outer wall of the linkage shaft (3), the linkage shaft (3) is inserted into the placement hole and the connecting block (33) is placed in the connecting groove (34), and a support plate (35) for supporting the third gear wheel (31) is fixedly connected to the linkage shaft (3).

7. The multi-stage speed regulating bench drill structure according to claim 6, characterized in that: An anti-dropout sleeve (4) is threadedly connected to the linkage shaft (3), and the anti-dropout sleeve (4) is tightly pressed against the third gear wheel (31).

8. The multi-stage speed regulating bench drill structure according to claim 7, characterized in that: A clamping plate (41) is rotatably connected to the linkage shaft (3), an elastic member (42) is connected between the clamping plate (41) and the linkage shaft (3), a gear ring (43) is fixedly connected to the anti-drop sleeve (4), and an end portion of the clamping plate (41) is embedded in the gear ring (43).

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