Anti-core-dropping water drop quick-release connector

Abstract

The application provides a kind of anti-core-dropping water drill quick-release connector, including transmission shaft, drill bit, the transmission shaft in the inner cavity of drill bit, the outer sleeve that can rotate relative to the transmission shaft, the connecting part that is directly or indirectly connected with the core of drill bit is arranged on the outer sleeve.The beneficial effects of the application: the core of drill bit can be connected with the outer sleeve through the connecting piece by setting the rotatable outer sleeve on the transmission shaft, so that the connecting piece will not rotate with the drill bit when drilling, and the situation of the connecting piece being twisted will not occur basically, and the connecting piece can also be designed as a hard connection. Since the connecting piece will not be twisted, drilling does not need to stop, which greatly improves the drilling efficiency and greatly improves the drilling safety.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of drilling equipment, and particularly relates to a fast dismounting connector for preventing core dropping of a water drill. BACKGROUND

[0002] The water drill machine is a kind of drilling equipment, which is used for drilling holes in walls or floors. In order to prevent the drilled core from falling and damaging objects or personnel when drilling a hole with a large diameter, the core is usually pre-connected to the drill bit. A fixing member is fixed on the floor or wall to be drilled, and the drill bit is connected to the drill bit through a connecting member. When the floor or wall is drilled through, the drilled core is connected to the drill bit, so it will not fall, thereby ensuring the safety of property and personnel. However, since the drill bit always rotates in one direction when drilling, the connecting member connected to the drill bit is twisted, which finally causes the connecting member to be difficult to dismount. Some operators reverse the drill bit to avoid this situation, but this operation will inevitably affect the drilling efficiency. SUMMARY

[0003] The application aims to solve the technical problem of preventing the connecting member from being twisted without affecting the drilling efficiency.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0005] A fast dismounting connector for preventing core dropping of a water drill, comprising a transmission shaft, the output end of the transmission shaft being detachably connected with a fast dismounting assembly; the fast dismounting assembly being provided with an outer sleeve capable of rotating relative to the transmission shaft, and the outer sleeve being provided with a connecting portion directly or indirectly connected with the drilled core.

[0006] Preferably, a bearing is connected between the fast dismounting assembly and the outer sleeve, and the fast dismounting assembly is detachably connected with the transmission shaft.

[0007] Preferably, the fast dismounting assembly comprises a shaft sleeve movably sleeved on the transmission shaft, and a handle sleeved on the shaft sleeve, a plurality of balls are movably arranged on the shaft sleeve in the radial direction, the transmission shaft is provided with a clamping groove for locally clamping the balls, the handle is provided with a pressing portion for pressing the balls into the clamping groove of the transmission shaft and a recessed portion for allowing the balls to retreat, and the clamping groove is a ring groove formed on the outer wall of the transmission shaft.

[0008] Preferably, the fast dismounting assembly further comprises a spring for keeping the handle in the state of pressing the balls under normal conditions, the spring is arranged in the handle, one end of the spring abuts against the inner wall of the handle, and the other end of the spring abuts against the shaft sleeve or a part arranged on the shaft sleeve.

[0009] As preferred, the end of the shaft sleeve is connected with a plug, and the plug is arranged in the inner cavity of the handle, the outer wall of the plug is provided with a convex ring for supporting the spring, one end of the spring abuts against the inner wall of the handle, and the other end abuts against the convex ring of the plug, and the plug is threadedly connected with the shaft sleeve.

[0010] As preferred, the bearing is arranged between the shaft sleeve and the outer sleeve, and the bearing is a plane bearing.

[0011] As preferred, a snap spring is arranged on the shaft sleeve above the ball.

[0012] As preferred, the outer wall of the handle is provided with an anti-skid structure, which is an annular convex arranged radially on the outer wall of the handle, or a stepped structure arranged on the outer wall of the handle.

[0013] As preferred, the quick release assembly is a shaft sleeve threadedly connected with the transmission shaft.

[0014] As preferred, the drill bit is further connected with the transmission shaft through a connecting sleeve, the connecting sleeve is threadedly connected with the transmission shaft, and the drill bit is threadedly connected with the connecting sleeve.

[0015] The present application has the following advantages: the present application is provided with a rotatable outer sleeve on the transmission shaft, the core drilled can be connected with the outer sleeve through the connecting piece, so that the connecting piece will not rotate with the drill bit when the drill bit drills a hole, and the connecting piece will not be twisted, the connecting piece can be designed as a hard connection, the core drilled will not need to be stopped, the drilling efficiency is greatly improved, and the drilling safety is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of the embodiment one of the present application;

[0017] Figure 2 FIG. 2 is a structural schematic diagram of the embodiment one of the present application without the drill bit;

[0018] Figure 3 FIG. 3 is a sectional view of the embodiment one of the present application without the transmission shaft;

[0019] Figure 4 FIG. 4 is a structural schematic diagram of the shaft sleeve of the embodiment one of the present application;

[0020] Figure 5 FIG. 5 is a structural schematic diagram of the handle of the embodiment one of the present application;

[0021] Figure 6 FIG. 6 is a structural schematic diagram of the outer sleeve of the embodiment one of the present application;

[0022] Figure 7 FIG. 7 is a structural schematic diagram of the connecting sleeve of the embodiment one of the present application;

[0023] Figure 8 Figure 1 is a schematic view of the structure of a drive shaft in an embodiment of the present application;

[0024] Figure 9 is a sectional view of an embodiment of the present application with the drive shaft removed;

[0025] Figure 10 Figure 2 is a schematic view of the structure of a handle in the embodiment of the present application;

[0026] Figure 11 Figure 3 is a sectional view of an embodiment of the present application.

[0027] Figure 1 is a schematic view of the structure of a drive shaft in an embodiment of the present application; Figure 2 is a schematic view of the structure of a handle in the embodiment of the present application; Figure 3 is a sectional view of an embodiment of the present application. DETAILED DESCRIPTION

[0028] The present application will be further described below in conjunction with embodiments.

[0029] Embodiment 1

[0030] As Figure 1A kind of anti-core water drop quick-release connector shown in Figure 8, including transmission shaft 100, the input end of transmission shaft 100 is connected with water drill screw thread, drill bit is connected on transmission shaft, in order to be able to adapt to the drill bit 300 on the market in this embodiment, connecting sleeve 400 is connected between the drill bit 300 and transmission shaft 100 in the embodiment, connecting sleeve 400 is connected with transmission shaft 100 screw thread, drill bit 300 is connected with connecting sleeve 400 screw thread.When then can the connecting sleeve 400 part is directly set on drill bit 300, or directly set connecting sleeve 400 on transmission shaft 100, to make drill bit 300 can be directly connected with transmission shaft 100 to omit connecting sleeve 400.Therefore, whether there is connecting sleeve 400 should be within the protection scope of the present application, it is worth noting that transmission shaft 100 is equipped with the outer sleeve 500 that can be rotated relative to transmission shaft, connecting sleeve is placed in the inner cavity of drill bit after being connected, outer sleeve 500 is equipped with the connecting portion 501 that is directly or indirectly connected with the core drilled, connecting portion 501 can be fixed with the core to be drilled by chain etc.Connection member.In the outer sleeve 500 and transmission shaft 100 are connected with quick-release assembly 200, the bearing is connected between the quick-release assembly 200 and outer sleeve 500, the quick-release assembly 200 and transmission shaft 100 are fixedly connected or detachably connected.In the embodiment of quick-release assembly 200, the name of assembly is not used quick-release structure also should belong to the protection scope of the present application, in the embodiment, the rotatable connection between outer sleeve 500 and transmission shaft 100 is used, so that drill bit 300 will not drive outer sleeve 500 to rotate when rotating, to realize the purpose of fixing the core to be drilled.

[0031] Further notable in this embodiment is that the quick release assembly 200 is designed to include a shaft sleeve 202 movably sleeved on the transmission shaft 100, a handle 204 sleeved on the shaft sleeve 202, a plurality of balls 205 movably arranged on the shaft sleeve 202 in a radial direction, a clamping groove 101 provided on the transmission shaft 100 at a position corresponding to the balls 205, a pressing part 2041 provided on the handle 204 and used to press the balls 205 into the clamping groove 101, and a recessed part 2042 provided on the handle 204 and used to allow the balls 205 to retreat, the balls 205 are locked or released by switching the position of the handle 204, the shaft sleeve 202 is clamped or separated from the transmission shaft 100, and the clamping groove 101 is a ring groove provided on the outer wall of the transmission shaft 100. In this embodiment, the handle 204 is axially displaced along the transmission shaft 100 by being pressed downward, the recessed part 2042 is correspondingly positioned with the balls 205 after the handle 204 is pressed downward by a certain distance, the balls 205 are moved radially into the recessed part 2042 under the influence of gravity and the force of pressing the handle 204, the clamping structure between the shaft sleeve 202 and the transmission shaft 100 is separated, the shaft sleeve 202 can be pulled out of the transmission shaft 100, the quick release function is realized, and the entire quick release assembly 200 is pulled out, and the drill bit 300 can be freely disassembled. Of course, if the opening diameter at the upper end of the drill bit 300 is designed to be larger than the maximum outer diameter of the quick release assembly 200, the drill bit 300 can be disassembled without removing the quick release assembly 200. In this embodiment, the shaft sleeve 202 is provided with a mounting hole 2021 in which the balls 205 can partially protrude from the inner wall of the shaft sleeve 202, the mounting hole 2021 is a through hole with one end having a larger diameter and the other end having a smaller diameter, the diameter of the larger-diameter end is larger than the diameter of the balls 205, and the diameter of the smaller-diameter end is smaller than the diameter of the balls 205. The number of balls 205 is generally designed to be at least three, and the balls 205 are arranged in a central annular array along the axis of the shaft sleeve 202. In this embodiment, the outer sleeve 500 is arranged above the handle 204, so that the user can be more convenient when disassembling the quick release assembly 200, and the distance of the hand reaching in is closer. When the outer sleeve is arranged above, the clamping spring 203 needs to be arranged on the shaft sleeve 202 above the outer sleeve.

[0032] In order to keep the balls 205 clamped on the transmission shaft 100 in a normal state, this embodiment further includes a spring 206 arranged inside the handle 204, one end of the spring 206 abuts against the inner wall of the handle 204, and the other end of the spring 206 abuts against a plug 207 arranged on the shaft sleeve 202, the plug 207 is arranged at the end of the shaft sleeve 202 and in the inner cavity of the handle 204, the outer wall of the plug 207 is provided with a convex ring 2071 for supporting the spring 206, one end of the spring 206 abuts against the inner wall of the handle 204, and the other end of the spring 206 abuts against the convex ring 2071 of the plug 207, and the plug 207 is threadedly connected with the shaft sleeve 202.

[0033] In order to further prevent the outer sleeve 500 from rotating with the transmission shaft 100, a bearing is arranged between the shaft sleeve 202 and the outer sleeve 500 in the embodiment, and the bearing is a plane bearing 201. The bearing can further ensure the relative rotation between the outer sleeve 500 and the shaft sleeve 202, and reduce the friction therebetween. In the case that the shaft sleeve 202 and the transmission shaft 100 can relatively rotate, the plane bearing 201 arranged between the shaft sleeve 202 and the outer sleeve 500 can further ensure that the outer sleeve 500 and the transmission shaft 100 do not rotate together, and even if the shaft sleeve 202 and the transmission shaft 100 are stuck, the outer sleeve 500 will not rotate.

[0034] In order to prevent the ball 205 from falling when the quick release assembly 200 is removed, a snap spring 203 is arranged on the shaft sleeve 202 above the ball 205 in the embodiment, the snap spring 203 is clamped in the snap spring groove 2022 of the shaft sleeve 202 and partially protrudes outward. In the embodiment, a guide slope 2043 is arranged between the recessed part 2042 and the pressing part 2041, which can facilitate the ball 205 to be pressed from outside to inside. Of course, the guide slope 2043 can not be arranged, because the ball 205 is spherical, and the guide slope 2043 in the form of a step structure can also push the ball 205. In the embodiment, the guide slope 2043 is only better in effect.

[0035] In order to facilitate the axial displacement of the handle 204, an anti-skid structure is arranged on the outer wall of the handle 204 in the embodiment. The anti-skid structure is an annular protrusion 2044 arranged radially on the outer wall of the handle 204.

[0036] Embodiment Two

[0037] As shown in FIG. 9 and Figure 10 The difference between the embodiment and the embodiment one is that the handle 204 is arranged above the outer sleeve 500 in the embodiment. The snap spring 203 also has the function of limiting the position of the handle 204 in the embodiment. In addition, because the handle 204 is arranged on the upper part of the transmission shaft 100, the plug 207 is not needed, and instead, an abutting step 2023 abutting against the spring 206 is arranged on the outer surface of the shaft sleeve 202. Because the bearing between the shaft sleeve 202 and the outer sleeve 500 is a plane bearing 201 in both embodiments, an abutting surface 2024 for the plane bearing 201 is arranged on the shaft sleeve 202 in both embodiments. A step structure is arranged on the outer wall of the handle 204 in the embodiment. The quick release assembly 200 can be removed more simply in the embodiment, and there are various methods. The first method is the same as that of the embodiment one, that is, the handle 204 is pressed down by inserting the hand into the cavity of the drill bit 300. The other method is to directly remove the drill bit 300, and the upper end of the drill bit 300 presses the upper part of the handle 204 when the drill bit 300 is removed, so that the whole quick release assembly 200 is automatically separated.

[0038] Example three

[0039] Please refer to Figure 11 The difference between the present example and example one is that the whole quick release assembly of the present example is a shaft sleeve 202 which is threadedly connected with the transmission shaft 100. The shaft sleeve 202 is directly threadedly connected with the transmission shaft 100. The plane bearing is arranged between the shaft sleeve 202 and the outer sleeve 500. Since the shaft sleeve 202 and the transmission shaft 100 are synchronously rotated, the torsion generated by the transmission shaft 100 during the actual drilling will not directly act on the shaft sleeve 202, thus the difficulty in disassembling the shaft sleeve 202 is not increased.

[0040] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples. The above examples and descriptions in the specification are only to illustrate the principles of the present application. Simple changes and replacements made by those skilled in the art without departing from the spirit and scope of the present application are within the protection scope of the present application.

Claims

1. A quick-release connector for an anti-chip-drop water drill, comprising a drive shaft (100), characterized in that: The output end of the drive shaft is detachably connected to a quick-release assembly (200); the quick-release assembly (200) is provided with a relatively rotatable outer sleeve (500), and the outer sleeve (500) is provided with a connecting part (501) that is directly or indirectly connected to the drilled core; the quick-release assembly (200) includes a bushing (202) movably sleeved outside the drive shaft (100), and a handle (204) sleeved outside the bushing (202); a plurality of balls (205) are radially movably arranged on the bushing (202); the drive shaft (100) The upper corresponding position is provided with a groove (101) for the ball (205) to be partially inserted. The handle (204) is provided with a pressing part (2041) for pressing the ball (205) into the groove (101) of the drive shaft (100) and a recessed part (2042) for the ball (205) to retract. By switching the position of the handle (204) to lock or release the ball (205), the bushing (202) can be engaged or disengaged from the drive shaft (100). The groove (101) is a ring groove provided on the outer wall of the drive shaft (100).

2. The quick-release connector for an anti-chip-drop water drill as described in claim 1, characterized in that: The quick-release assembly (200) is connected to the outer sleeve (500) by a bearing, and the quick-release assembly (200) is detachably snapped into the drive shaft (100).

3. The quick-release connector for an anti-chip-drop water drill as described in claim 2, characterized in that: It also includes a spring (206) that keeps the grip (204) in the normal state of pressing the ball (205). The spring (206) is located inside the grip (204). One end of the spring (206) abuts against the inner wall of the grip (204), and the other end of the spring (206) abuts against the bushing (202) or against a part located on the bushing (202).

4. The quick-release connector for an anti-chip-drop water drill as described in claim 3, characterized in that: The bushing (202) is connected to a plug (207) at its end, and the plug (207) is located in the inner cavity of the handle (204). The outer wall of the plug (207) is provided with a convex ring (2071) that supports the spring (206). One end of the spring (206) abuts against the inner wall of the handle (204), and the other end abuts against the convex ring (2071) of the plug (207). The plug (207) is threadedly connected to the bushing (202).

5. The quick-release connector for an anti-chip-drop water drill as described in claim 4, characterized in that: The bearing is located between the bushing (202) and the outer sleeve (500), and the bearing is a plane bearing (201).

6. The quick-release connector for an anti-chip-drop water drill as described in claim 3, characterized in that: A retaining ring (203) is provided on the bushing (202) located above the ball (205).

7. A quick-release connector for an anti-chip-drop water drill as described in any one of claims 3-6, characterized in that: The outer wall of the grip (204) is provided with an anti-slip structure, which is an annular protrusion (2044) radially arranged on the outer wall of the grip (204); or a stepped structure is provided on the outer wall of the grip (204).

8. A quick-release connector for an anti-chip-drop water drill as described in any one of claims 1-6, characterized in that: It also includes a drill bit (300), and a connecting sleeve (400) is connected between the drill bit (300) and the drive shaft (100). The connecting sleeve (400) is threadedly connected to the drive shaft (100), and the drill bit (300) is threadedly connected to the connecting sleeve (400).

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