Rhinestone perforating machine

Abstract

The utility model relates to a rhinestone perforating machine, which comprises an outer shell, an inner shell, an inner shell and a plurality of drill holes, the output shaft is used for assembling a drill bit; the driving mechanism is used for driving the output shaft to rotate; the water pump is located in the outer shell, a water inlet of the water pump is communicated with an external water pipe, and a water outlet of the water pump is communicated with a built-in water pipe; the water pump transmission mechanism is in transmission fit with the driving mechanism and the water pump so as to transmit the rotating driving force of the driving mechanism to the water pump; and the clutch mechanism is used for starting or stopping transmission between the water pump transmission mechanism and the water pump. According to the rhinestone perforating machine, the water pump is integrated in the rhinestone perforating machine, the rhinestone perforating machine is safer to use, the clutch mechanism used for starting and stopping the water pump is arranged, the rhinestone perforating machine is more reasonable to use, and the operation noise of the whole machine can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a water drill drilling machine. Background Art

[0002] A punch is a general term for machines and equipment that use a tool that is harder and sharper than the target object to leave cylindrical holes or holes on the target object through rotary cutting or rotary extrusion. It is also called a drilling rig, punch, eyelet drilling machine, through-hole machine, etc. Among them, a water drill punch can supply water to cool the drill bit during the drilling process.

[0003] Existing water drills use an external water pump to provide water supply power, but the external water pump requires an external power supply, which poses a safety hazard (such as leakage). In addition, when a temporary water pump is used, the water pipe of the water pump may not match the water pipe of the water drill, resulting in inconvenience in use. Utility Model Content

[0004] Based on the above-mentioned defects in the prior art, the purpose of the utility model is to provide a water drill punching machine, in which a water pump is integrated into the water drill punching machine, which is safer to use and a clutch mechanism for starting and stopping the water pump is provided, which is more rational to use and can also reduce the operating noise of the whole machine.

[0005] To this end, the utility model provides the following technical solutions.

[0006] The utility model provides a water drill drilling machine, the water drill drilling machine comprising:

[0007] An outer shell, which constitutes the outer contour structure of the water drill punch;

[0008] An output shaft for assembling a drill bit;

[0009] A driving mechanism, used for driving the output shaft to rotate;

[0010] A water pump is located in the outer shell, the water inlet of the water pump is connected to the external water pipe and the water outlet of the water pump is connected to the water pipe inside the machine;

[0011] A water pump transmission mechanism, which cooperates with the driving mechanism and the water pump respectively to transmit the rotational driving force of the driving mechanism to the water pump;

[0012] The clutch mechanism is used to open or disconnect the transmission between the water pump transmission mechanism and the water pump.

[0013] Preferably, the driving mechanism comprises a driving shaft and a reduction assembly, and the reduction assembly is respectively in driving cooperation with the driving shaft and the output shaft to reduce the rotational driving force of the driving shaft and transmit it to the output shaft.

[0014] Preferably, a gear structure is provided at the end of the driving shaft, the reduction assembly includes a first gear and a second gear coaxially connected and a third gear coaxially connected to the output shaft, the gear structure is meshed with the first gear, and the second gear is meshed with the third gear.

[0015] Preferably, the water pump transmission mechanism cooperates with the reduction assembly and the water pump transmission respectively.

[0016] Preferably, the water pump transmission mechanism includes a fourth gear, the water pump includes a fifth gear, the fourth gear is meshed with the third gear, and the fourth gear is coupled with the fifth gear through the clutch mechanism.

[0017] Preferably, the water pump transmission mechanism comprises a first transmission shaft, the water pump comprises a second transmission shaft, the clutch mechanism comprises a clutch sleeve, the clutch sleeve is sleeved on one of the first transmission shaft and the second transmission shaft, and the two are spline-connected;

[0018] When the clutch sleeve is in the first axial position, the clutch sleeve is spline-connected with the other of the first transmission shaft and the second transmission shaft, and the water pump transmission mechanism is in transmission cooperation with the water pump;

[0019] When the clutch sleeve is in the second axial position, the clutch sleeve is disconnected from the spline connection with the other of the first transmission shaft and the second transmission shaft, and the water pump transmission mechanism is disconnected from the water pump.

[0020] Preferably, the clutch mechanism comprises a knob and an elastic member, wherein the elastic member is sleeved on the other and abuts against one side of the clutch sleeve; the knob is provided with an eccentric protrusion, and the eccentric protrusion abuts against the other side of the clutch sleeve;

[0021] When the knob is in the first rotation position, the eccentric protrusion presses the clutch sleeve to the first axial position, and the elastic member is in a compressed state;

[0022] When the knob is rotated to the second rotation position, the eccentric protrusion rotates and moves away from the elastic member, and the elastic member rebounds to push the clutch sleeve to move to the second axial position.

[0023] Preferably, the first transmission shaft is plugged into the second transmission shaft and the two are clearance-fitted.

[0024] Preferably, the one includes a connecting sleeve, the connecting sleeve is sleeved on the shaft body of the one and the two are interference fit, and the clutch sleeve is sleeved on the connecting sleeve and the two are spline connected.

[0025] Preferably, the clutch sleeve is provided with a protrusion, and one end of the elastic member is sleeved on the protrusion; and / or,

[0026] The water pump comprises a box body. When the other is the second transmission shaft, the box body is provided with a groove, and the other end of the elastic member is clamped in the groove.

[0027] The utility model has the following technical effects:

[0028] The utility model provides a water drill drilling machine, in which a water pump is integrated, and there is no need to connect an external power supply to the water pump, which is safer to use, and there is no problem of mismatch between the water pump and the water pipe in the machine. In addition, by setting a clutch mechanism for starting and stopping the water pump, the water pump can be turned off for use in scenarios where cooling is not required, which makes the use more reasonable and can also reduce the operating noise of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a side view of the partial structure of the water drill drilling machine of the utility model;

[0030] Figure 2 It is a partial structural cross-sectional view of a water drill drilling machine in one embodiment of the utility model;

[0031] Figure 3 It is a partial structural cross-sectional view of a water drill when the clutch sleeve is in a first axial position in one embodiment of the utility model;

[0032] Figure 4 It is a partial structural cross-sectional view of the water drill when the clutch sleeve is in the second axial position in one embodiment of the utility model;

[0033] Figure 5 It is a partial structural stereogram of the water drill drilling machine of the utility model.

[0034] Description of Reference Numerals

[0035] 100. Water drill drilling machine;

[0036] 1. Outer shell;

[0037] 2. Output shaft;

[0038] 3. Driving mechanism; 31. Driving shaft; 311. Gear structure; 32. Speed ​​reduction assembly; 321. First gear; 322. Second gear; 323. Third gear;

[0039] 4. water pump; 41. fifth gear; 42. second transmission shaft; 43. housing; 431. groove; 44. sixth gear;

[0040] 5. Water pipes inside the machine;

[0041] 6. water pump transmission mechanism; 61. fourth gear; 62. first transmission shaft; 621. connecting sleeve;

[0042] 7. Clutch mechanism; 71. Clutch sleeve; 711. Protrusion; 72. Knob; 721. Eccentric protrusion; 73. Elastic member;

[0043] 8. Connector. DETAILED DESCRIPTION

[0044] In order to make the technical solution and beneficial effects of the utility model more obvious and easy to understand, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used in this article have the same meaning as those in the technical field to which this application belongs.

[0045] In the description of the present invention, unless otherwise explicitly defined, terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of simplified description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0046] In the present invention, the terms "first" and "second" are used only for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two; "several" means at least one, unless otherwise clearly defined.

[0047] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0049] The terms "front", "rear", "upper" and "lower" mentioned in this utility model are all Figures 1 to 3 The markings in shall prevail.

[0050] According to the following Figures 1 to 5 The water drill drilling machine of the utility model is described in detail.

[0051] In this embodiment, if Figures 1 to 5 As shown, the water drilling machine 100 includes an outer shell 1, an output shaft 2, a driving mechanism 3, a water pump 4, a water pipe 5 inside the machine, a water pump transmission mechanism 6 and a clutch mechanism 7. The output shaft 2 is rotatably connected to the inner wall of the outer shell 1, and the front end of the output shaft 2 extends out of the outer shell 1 to assemble the drill bit. The driving mechanism 3, the water pump 4, the water pipe 5 inside the machine, the water pump transmission mechanism 6 and the clutch mechanism 7 are all located inside the outer shell 1. The driving mechanism 3 is used to drive the output shaft 2 to rotate, the water inlet of the water pump 4 is connected to the external water pipe, and the water outlet of the water pump 4 is connected to the water pipe 5 inside the machine. The water pump transmission mechanism 6 is respectively matched with the driving mechanism 3 and the water pump 4 to transmit the rotational driving force of the driving mechanism to the water pump 4, and the clutch mechanism 7 is used to open or disconnect the transmission between the water pump transmission mechanism 6 and the water pump 4.

[0052] When the water pump transmission mechanism 6 and the water pump 4 are in a transmission matching state, the driving mechanism 3 drives the output shaft 2 to rotate to output the working force outward. At the same time, the water pump transmission mechanism 6 transmits the rotational driving force of the driving mechanism 3 to the water pump 4, which is used as the operating power of the water pump 4. The water pump 4 starts pumping water. At this time, the external water pipe supplies water to the internal water pipe 5 through the water pump 4 to cool the drill bit. When the transmission matching between the water pump transmission mechanism 6 and the water pump 4 is disconnected by the clutch mechanism 7, the driving mechanism 3 drives the output shaft 2 to rotate, and the water pump 4 stops running.

[0053] By adopting the above solution, the water pump 4 is integrated into the water drilling machine 100, and there is no need to connect an external power supply to the water pump, which is safer to use, and there is no problem of mismatch between the water pump and the water pipe in the machine. In addition, by providing a clutch mechanism 7 for starting and stopping the water pump 4, the water pump 4 can be turned off for use in scenarios where cooling is not required, and the operating noise of the whole machine can also be reduced.

[0054] In one embodiment, the output shaft 2 is provided with a hollow channel (not shown in the figure), and the internal water pipe 5 is partially inserted into the hollow channel. The cooling water output by the internal water pipe 5 flows through the hollow channel and reaches the drill bit installed on the output shaft 2, or the internal water pipe 5 passes through the hollow channel and directly sprays water onto the drill bit.

[0055] In one embodiment, if Figure 1 and Figure 2 As shown, a joint 8 is fixed to the outer shell 1, and the water inlet of the water pump 4 is connected to one end of the joint 8 located inside the outer shell 1, and the end of the joint 8 located outside the outer shell 1 is used to connect to the external water pipe.

[0056] In one embodiment, if Figure 2 and Figure 5 As shown, the driving mechanism 3 includes a motor (not shown in the figure) and a reduction assembly 32. The output end of the motor constitutes a driving shaft 31. The reduction assembly 32 is respectively coupled with the driving shaft 31 and the output shaft 2 to reduce the rotational driving force of the driving shaft 31 and transmit it to the output shaft 2.

[0057] Furthermore, if Figure 2 and Figure 5 As shown, a gear structure 311 is provided at the end of the driving shaft 31, and the reduction assembly 32 includes a first gear 321 and a second gear 322 connected coaxially, and a third gear 323 connected coaxially with the output shaft 2. The gear structure 311 meshes with the first gear 321, and the second gear 322 meshes with the third gear 323. The outer diameter of the first gear 321 is larger than the outer diameter of the second gear 322, and the outer diameter of the second gear 322 is smaller than the outer diameter of the third gear 323. In this way, when the driving shaft 31 rotates, the gear structure 311 drives the first gear 321 to rotate, the second gear 322 and the first gear 321 rotate synchronously due to the coaxial connection, the second gear 322 drives the third gear 323 to rotate, and the output shaft 2 rotates synchronously with the third gear 323 to output working force outward.

[0058] Furthermore, if Figure 5 As shown, the water pump transmission mechanism 6 cooperates with the reduction assembly 32 and the water pump 4 respectively, and the rotational driving force is transmitted to the water pump transmission mechanism 6 through the reduction assembly 32, and then the rotational driving force is transmitted to the water pump 4 by the water pump transmission mechanism 6, thereby starting the water pump 4.

[0059] Furthermore, if Figure 2and Figure 5 As shown, the water pump transmission mechanism 6 includes a fourth gear 61, and the water pump 4 includes a fifth gear 41. The fourth gear 61 is meshed with the third gear 323, and the fourth gear 61 is in transmission cooperation with the fifth gear 41 through the clutch mechanism 7. When the water pump transmission mechanism 6 and the water pump 4 are in a transmission cooperation state, the fourth gear 61 and the fifth gear 41 are coaxial and connected, and the motor drives the fourth gear 61 through the third gear 323 to drive the fifth gear 41 to rotate, thereby starting water pumping. When the water pump transmission mechanism 6 and the water pump 4 are disconnected from the transmission cooperation through the clutch mechanism 7, the fourth gear 61 and the fifth gear 41 are coaxial but not connected. When the motor is running, the fourth gear 61 idles and the fifth gear 41 does not rotate.

[0060] Furthermore, if Figure 2 As shown, the water pump 4 includes a sixth gear 44, which meshes with the fifth gear 41, and the two gears cooperate to pump water. It should be understood that the structure of the water pump 4 is not limited thereto, and the water pump 4 can be any water pump structure that can be miniaturized in size in the prior art.

[0061] In one embodiment, if Figure 2 and Figure 5 As shown, the water pump 4 is located behind the water pump transmission mechanism 6, and the water pump 4 is located below the drive shaft 31 of the drive mechanism 3, so as to access the external water pipe from the bottom of the outer shell 1. The third gear 323 is located above the second gear 322 and the fourth gear 61, which is conducive to compact structure.

[0062] In one embodiment, if Figure 2 As shown, the water pump transmission mechanism 6 includes a first transmission shaft 62, and the fourth gear 61 is coaxially connected to the first transmission shaft 62. The water pump 4 includes a second transmission shaft 42, and the fifth gear 41 is coaxially connected to the second transmission shaft 42. The clutch mechanism 7 includes a clutch sleeve 71, and the clutch sleeve 71 is sleeved on the first transmission shaft 62 and the two are splined, and the spline extends along the axial direction of the first transmission shaft 62, so that the clutch sleeve 71 can rotate with the first transmission shaft 62. Figure 3 As shown, when the clutch sleeve 71 is in the first axial position, the clutch sleeve 71 is spline-connected with the second transmission shaft 42, and at this time, the clutch sleeve 71 can drive the second transmission shaft 42 to rotate synchronously, thereby realizing the transmission cooperation between the water pump transmission mechanism 6 and the water pump 4. Figure 4 As shown, when the clutch sleeve 71 is in the second axial position, the clutch sleeve 71 is disconnected from the spline connection with the second transmission shaft 42. At this time, the clutch sleeve 71 rotates while the second transmission shaft 42 does not rotate, that is, the water pump transmission mechanism 6 is disconnected from the water pump 4.

[0063] Of course, the connection relationship between the clutch sleeve 71 and the first transmission shaft 62 and the second transmission shaft 42 is not limited to this, and the clutch sleeve 71 can also be always spline-connected with the second transmission shaft 42. When the clutch sleeve 71 is in the first axial position, the clutch sleeve 71 is spline-connected with the first transmission shaft 62, and when the clutch sleeve 71 is in the second axial position, the clutch sleeve 71 is disconnected from the spline connection with the first transmission shaft 62. It should be understood that the "first axial position" herein refers to the axial position of the clutch sleeve 71 when the transmission cooperation between the water pump transmission mechanism 6 and the water pump 4 is turned on, and the "second axial position" refers to the axial position of the clutch sleeve 71 when the transmission cooperation between the water pump transmission mechanism 6 and the water pump 4 is turned off, and does not indicate a specific position. When the connection relationship between the clutch sleeve 71 and the first transmission shaft 62 and the second transmission shaft 42 changes, the "first axial position" and the "second axial position" will also change.

[0064] The following is a specific description using an example in which the clutch sleeve 71 and the first transmission shaft 62 are always spline-connected and the clutch sleeve 71 and the second transmission shaft 42 can be separated from the spline connection.

[0065] In one embodiment, if Figure 3 and Figure 4 As shown, the clutch mechanism 7 includes a knob 72 and an elastic member 73. The elastic member 73 is sleeved on the second transmission shaft 42 and abuts against one side of the clutch sleeve 71. The knob 72 is provided with an eccentric protrusion 721, and the eccentric protrusion 721 abuts against the other side of the clutch sleeve 71. Figure 3 As shown, when the knob 72 is in the first rotation position, the eccentric protrusion 721 presses the clutch sleeve 71 to the first axial position, and the elastic member 73 is in a compressed state. Figure 4 As shown, when the knob 72 rotates to the second rotation position, the eccentric protrusion 721 rotates around the central axis of the knob 72, and the eccentric protrusion 721 moves in the axial direction of the first transmission shaft 62 in a direction away from the elastic member 73. The elastic member 73 rebounds to push the clutch sleeve 71 to move to the second axial position, and the knob 72 stops at the second rotation position. At this time, the eccentric protrusion 721 axially presses the clutch sleeve 71, so that the clutch sleeve 71 stops at the second axial position. When the knob 72 rotates in the opposite direction from the second rotation position to the first rotation position, the eccentric protrusion 721 pushes the clutch sleeve 71 to move in the opposite direction to the first axial position, and the transmission cooperation between the water pump transmission mechanism 6 and the water pump 4 is reopened.

[0066] Furthermore, if Figure 2 As shown, one end of the second transmission shaft 42 is provided with a plug-in groove (not marked in the figure), and the first transmission shaft 62 is plugged into the plug-in groove, and the first transmission shaft 62 and the plug-in groove are clearance-matched, and the first transmission shaft 62 and the second transmission shaft 42 are plugged in to reduce the difficulty of assembly.

[0067] Furthermore, since the first transmission shaft 62 is inserted into the insertion groove of the second transmission shaft 42, the outer diameter of the first transmission shaft 62 is smaller than the outer diameter of the second transmission shaft 42. In order to simplify the structural design of the clutch sleeve 71, a connecting sleeve 621 is provided on the shaft body of the first transmission shaft 62, and the two are interference fit. The outer diameter of the spline provided on the outer wall of the connecting sleeve 621 is the same as the outer diameter of the spline provided on the second transmission shaft 42. The clutch sleeve 71 is sleeved on the connecting sleeve 621 and the two are spline connected.

[0068] In one embodiment, if Figure 2 and Figure 3 As shown, the water pump 4 includes a box body 43, the box body 43 is provided with a groove 431, the clutch sleeve 71 is provided with a protrusion 711, one end of the elastic member 73 is sleeved on the protrusion 711, and the other end of the elastic member 73 is clamped in the groove 431, and the elastic member 73 is easy to assemble.

[0069] In one embodiment, if Figure 2 As shown, the elastic member 73 is a spring.

[0070] It should be understood that when the assembly method of the clutch sleeve 71 is constructed so that it is always spline-connected with the second transmission shaft 42 and the clutch sleeve 71 and the first transmission shaft 62 can be disengaged from the spline connection, the setting positions of the knob 72 and the elastic member 73 will change, and the size and / or structure of the first transmission shaft 62 and the second transmission shaft 42 will change. However, the specific principle is similar to the above-mentioned embodiment of "the clutch sleeve 71 and the first transmission shaft 62 are always spline-connected and the clutch sleeve 71 and the second transmission shaft 42 can be disengaged from the spline connection", and will not be repeated here.

[0071] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the utility model that may not be explicitly described. Therefore, the above embodiments only express several implementations of the utility model and do not limit the scope of protection of the utility model patent.

Claims

1. A water drill drilling machine, characterized in that: The water drilling machine (100) comprises: An outer shell (1), which constitutes the outer contour structure of the water drilling machine (100); An output shaft (2) for assembling a drill bit; A driving mechanism (3) for driving the output shaft (2) to rotate; A water pump (4) is located in the outer shell (1), wherein the water inlet of the water pump (4) is connected to an external water pipe and the water outlet of the water pump (4) is connected to an internal water pipe (5); A water pump transmission mechanism (6), which is respectively in transmission cooperation with the driving mechanism (3) and the water pump (4) to transmit the rotational driving force of the driving mechanism to the water pump (4); A clutch mechanism (7) is used to start or disconnect the transmission between the water pump transmission mechanism (6) and the water pump (4).

2. The water drill according to claim 1, characterized in that: The driving mechanism (3) comprises a driving shaft (31) and a reduction assembly (32), wherein the reduction assembly (32) is respectively coupled to the driving shaft (31) and the output shaft (2) to reduce the rotational driving force of the driving shaft (31) and transmit it to the output shaft (2).

3. The water drill according to claim 2, characterized in that: A gear structure (311) is provided at the end of the driving shaft (31), and the reduction assembly (32) comprises a first gear (321) and a second gear (322) which are coaxially connected, and a third gear (323) which is coaxially connected to the output shaft (2), the gear structure (311) meshes with the first gear (321), and the second gear (322) meshes with the third gear (323).

4. The water drill according to claim 3, characterized in that: The water pump transmission mechanism (6) is respectively in transmission cooperation with the reduction assembly (32) and the water pump (4).

5. The water drill according to claim 4, characterized in that: The water pump transmission mechanism (6) comprises a fourth gear (61), the water pump (4) comprises a fifth gear (41), the fourth gear (61) is meshed with the third gear (323), and the fourth gear (61) is transmission-coordinated with the fifth gear (41) via the clutch mechanism (7).

6. The water drill according to any one of claims 1 to 5, characterized in that: The water pump transmission mechanism (6) comprises a first transmission shaft (62), the water pump (4) comprises a second transmission shaft (42), the clutch mechanism (7) comprises a clutch sleeve (71), the clutch sleeve (71) is sleeved on one of the first transmission shaft (62) and the second transmission shaft (42), and the two are spline-connected; When the clutch sleeve (71) is in a first axial position, the clutch sleeve (71) is spline-connected to the other of the first transmission shaft (62) and the second transmission shaft (42), and the water pump transmission mechanism (6) is in transmission cooperation with the water pump (4); When the clutch sleeve (71) is in the second axial position, the clutch sleeve (71) is disconnected from the spline connection with the other of the first transmission shaft (62) and the second transmission shaft (42), and the water pump transmission mechanism (6) is disconnected from the water pump (4).

7. The water drill according to claim 6, characterized in that: The clutch mechanism (7) comprises a knob (72) and an elastic member (73), wherein the elastic member (73) is sleeved on the other member and abuts against one side of the clutch sleeve (71); the knob (72) is provided with an eccentric protrusion (721), and the eccentric protrusion (721) abuts against the other side of the clutch sleeve (71); When the knob (72) is in the first rotation position, the eccentric protrusion (721) presses the clutch sleeve (71) to the first axial position, and the elastic member (73) is in a compressed state; When the knob (72) is rotated to the second rotation position, the eccentric protrusion (721) rotates away from the elastic member (73), and the elastic member (73) rebounds to push the clutch sleeve (71) to move to the second axial position.

8. The water drill according to claim 6, characterized in that: The first transmission shaft (62) is plugged into the second transmission shaft (42) and the two are clearance-matched.

9. The water drill according to claim 8, characterized in that: The one comprises a connecting sleeve (621), the connecting sleeve (621) is sleeved on the shaft body of the one and the two are interference fit, the clutch sleeve (71) is sleeved on the connecting sleeve (621) and the two are spline connected.

10. The water drill according to claim 7, characterized in that: The clutch sleeve (71) is provided with a protrusion (711), and one end of the elastic member (73) is sleeved on the protrusion (711); and / or, The water pump (4) comprises a housing (43); when the other is the second transmission shaft (42), the housing (43) is provided with a groove (431); the other end of the elastic member (73) is clamped in the groove (431).

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