Water pump shaft locking mechanism

Abstract

A water pump shaft locking mechanism comprises a fixed clamp body and a movable clamp body arranged on the fixed clamp body in a sliding fit mode. A first clamping block is arranged on the fixed clamp body; the movable clamp body is provided with a second clamping block, and the second clamping block is detachably installed on the movable clamp body. The first clamping block and the second clamping block are each provided with a shaft piece containing groove used for containing a water pump shaft, and the section of each shaft piece containing groove is in a V shape or a trapezoid shape. The first clamping block is movably installed on the fixed clamp body through the connecting supporting piece, and the first clamping block can be movably arranged relative to the fixed clamp body. The water pump shaft can be positioned by four points, the water pump shaft can be effectively clamped and fixed, a user does not need to hold the water pump shaft by hand in the installation process of the round nut, the user can conveniently install the round nut on the water pump shaft manually, and the purpose of improving the installation efficiency of the round nut is achieved. Meanwhile, the problem that the water pump shaft cannot be held by a hand and falls off is avoided, so that the quality of the water pump shaft is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump shaft clamping devices, in particular to a water pump shaft locking mechanism. Background Art

[0002] A water pump shaft is usually provided in a water pump. The main function of the water pump shaft is to transfer the input torque to the impeller and provide the energy required for the impeller to work. When installing the water pump shaft, a round nut is usually installed on one end of the water pump shaft, and then the water pump shaft with the round nut is installed into the water pump housing, and then the other end of the water pump shaft is connected to the impeller, so as to achieve the installation limit of the water pump shaft in the water pump housing.

[0003] In the prior art, the installation of the round nut is usually done by the installer holding the water pump shaft in one hand, and then manually threading the round nut onto the threaded end of one end of the water pump shaft with the other hand. This installation method requires the installer to hold the round nut and the water pump shaft separately, which is inconvenient to operate and affects the installation efficiency of the round nut. In addition, since the water pump shaft is usually a shaft part with a circular cross-section, it is not convenient for the installer to hold it by hand, and the water pump shaft has a certain weight, which leads to the phenomenon that the water pump shaft is easy to fall from the worker's hand during the process of installing the round nut, until the surface of the water pump shaft is damaged by colliding with the ground. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a water pump shaft locking mechanism.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The water pump shaft locking mechanism comprises a fixed caliper body and a movable caliper body slidingly matched on the fixed caliper body, a driving screw is rotatably mounted on the movable caliper body, an operating handle is inserted through the end of the driving screw, a matching screw hole is provided on the fixed caliper body, and the driving screw is threadedly matched with the matching screw hole; the characteristics are:

[0007] The fixed clamp body is provided with a first clamp block; the movable clamp body is provided with a second clamp block, and the second clamp block is detachably mounted on the movable clamp body; a shaft receiving groove for receiving a water pump shaft is provided on one end of the first clamp block facing the second clamp block and one end of the second clamp block facing the first clamp block, and the cross section of the shaft receiving groove is V-shaped or trapezoidal;

[0008] The first clamping block is movably mounted on the fixed clamp body through a connecting support member, the connecting support member includes a connecting shaft portion and a limiting head connected to one end of the connecting shaft portion, the fixed clamp body is provided with a connecting support hole, the other end of the connecting shaft portion passes through the connecting support hole and is connected to the first clamping block, the aperture of the connecting support hole is larger than the outer diameter of the connecting shaft portion and smaller than the outer diameter of the limiting head portion, and the first clamping block can be movably arranged relative to the fixed clamp body.

[0009] In the utility model, an operating handle is inserted into the end of the driving screw.

[0010] In the utility model, the connecting shaft portion is provided with a screw portion threadedly connected to the first clamping block, and the end of the limiting head portion facing away from the connecting shaft portion is provided with a hexagonal groove.

[0011] In the utility model, the connecting shaft is provided with a first compression spring and two first washers, one of the first washers abuts against the fixed caliper body, and the other first washer abuts against the limiting head, the first compression spring is located between the two first washers, and the two ends of the first compression spring abut against the two first washers respectively.

[0012] In the utility model, an elastic rubber sleeve sleeved on the connecting shaft is inserted into the connecting support hole, the outer ring wall of the elastic rubber sleeve contacts the hole wall of the connecting support hole, and the inner ring wall contacts the outer wall of the connecting shaft.

[0013] In the present invention, the first clamping block and the second clamping block are both made of aluminum or aluminum alloy.

[0014] In the utility model, the movable pliers body includes a movable guide portion and a movable pliers portion integrally formed on the movable guide portion; the fixed pliers body includes a fixed seat body portion and a fixed pliers portion integrally formed on the fixed seat body portion; the fixed seat body portion is provided with a sliding guide groove for guiding the movement of the movable pliers body, and the movable guide portion is slidably fitted in the sliding guide groove.

[0015] In the utility model, the fixed clamp part is provided with a first installation position for installing the first clamping block, the first installation position includes a vertical mating surface and a transverse mating surface connected in an L shape, and a movable gap H is left between the bottom surface of the first clamping block and the transverse mating surface of the first installation position.

[0016] In the utility model, a screw avoidance groove for accommodating a driving screw is provided in the movable guide portion, and the screw avoidance groove is arranged through the bottom and rear end of the movable guide portion.

[0017] In the utility model, the driving screw includes a driving head, an extension section and a screw section connected in sequence along the axial direction, a matching through hole is provided on the movable guide portion, the driving head is located outside the movable caliper body, the extension section passes through the matching through hole, and the screw section cooperates with the matching screw hole in the screw avoidance groove; the extension section is provided with a second compression spring and two second washers located in the screw avoidance groove, and the extension section is also provided with a cotter pin, the two second washers are located between the cotter pin and one end of the movable caliper body provided with the matching through hole, and the second compression spring is located between the two second washers.

[0018] The beneficial effects of the utility model are as follows: the utility model is provided with a shaft accommodating groove on the first clamping block and the second clamping block, and the cross-section of the shaft accommodating groove is V-shaped or trapezoidal, so that the upper groove surface and the lower groove surface of the shaft accommodating groove serve as inclined contact planes for contacting the water pump shaft. When the first clamping block and the second clamping block clamp the water pump shaft, the two inclined contact planes of the first clamping block and the two inclined contact planes of the second clamping block are in contact with the outer peripheral surface of the water pump shaft, so that the water pump shaft can be positioned at four points, and the clamping and fixing of the water pump shaft is effectively realized, so that during the installation process of the round nut, the user does not need to hold the water pump shaft by hand, which is convenient for the user to manually install the round nut on the water pump shaft, thereby achieving the purpose of improving the installation efficiency of the round nut; at the same time, it avoids the problem caused by the water pump shaft falling due to the hand not being able to hold it, thereby ensuring the quality of the water pump shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 is a three-dimensional diagram of this embodiment;

[0021] Figure 2 is a top view of this embodiment;

[0022] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0023] Figure 4 for Figure 2 Sectional view of B-B-;

[0024] Figure 5 for Figure 4 Enlarged view of middle I;

[0025] Figure 6 for Figure 2 Cross-sectional view of CC. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0027] Reference Figure 1-6 The water pump shaft locking mechanism includes a fixed component 1 for connecting to a workbench, a fixed pliers body 2 arranged on the fixed component 1, and a movable pliers body 3 slidingly fitted on the fixed pliers body 2. A driving screw 4 is rotatably mounted on the movable pliers body 3, and an operating handle 40 is inserted through the end of the driving screw 4. A matching screw hole is provided on the fixed pliers body 2, and the driving screw 4 is threadedly fitted with the matching screw hole. When it is necessary to clamp or release the water pump shaft, the driving screw 4 is rotated by the operating handle 40 to move the movable pliers body 3 relative to the fixed pliers body 2 to achieve the purpose of clamping or releasing the water pump shaft.

[0028] Further, the fixed clamp body 2 is provided with a first clamp block 20, and the first clamp block 20 is detachably mounted on the fixed clamp body 2; the movable clamp body 3 is provided with a second clamp block 30, and the second clamp block 30 is detachably mounted on the movable clamp body 3, and a clamping position is formed between the first clamp block 20 and the second clamp block 30; the first clamp block 20 is provided with a shaft receiving groove 100 for receiving the water pump shaft on one end of the first clamp block 20 facing the second clamp block 30 and the second clamp block 30 is provided with a shaft receiving groove 100 for receiving the water pump shaft, and the cross-section of the shaft receiving groove 100 is V-shaped or trapezoidal, preferably trapezoidal. The upper groove surface and the lower groove surface of the shaft accommodating groove 100 are both inclined contact planes for contacting the water pump shaft. When the first clamping block 20 and the second clamping block 30 clamp the water pump shaft, the two inclined contact planes of the first clamping block 20 and the two inclined contact planes of the second clamping block 30 are in contact with the outer circumferential surface of the water pump shaft, so that the water pump shaft can be positioned at four points, and the clamping and fixing of the water pump shaft is effectively realized, so that during the installation process of the round nut, the user does not need to hold the water pump shaft by hand, which is convenient for the user to manually install the round nut on the water pump shaft, and at the same time avoids the problem caused by the water pump shaft falling due to the hand not being able to hold it.

[0029] Furthermore, when there is a height error between the first clamping block 20 and the second clamping block 30, it is easy for the first clamping block 20 to have an inclined contact plane or the second clamping block 30 to have an inclined contact plane that cannot contact the water pump shaft, resulting in the water pump shaft being able to contact only three inclined contact surfaces to achieve three-point positioning, which reduces the clamping quality of the water pump shaft to a certain extent; in order to avoid this problem, the first clamping block 20 is movably mounted on the fixed clamp body 2 through a connecting support 5, the connecting support 5 includes a connecting shaft portion 51 and a limiting head portion 52 connected to one end of the connecting shaft portion 51, the fixed clamp body 2 is provided with a connecting support hole, the other end of the connecting shaft portion 51 passes through the connecting support hole and is connected to the first clamping block 20, the aperture of the connecting support hole is larger than the outer diameter of the connecting shaft portion 51 and smaller than the outer diameter of the limiting head portion 52, so that the first clamping block 20 can be movably arranged relative to the fixed clamp body 2, so that the first clamping block 20 can move slightly to cooperate with the second clamping block 30 to clamp the water pump shaft, thereby avoiding problems caused by the height error between the first clamping block 20 and the second clamping block 30.

[0030] As a preferred embodiment, the connecting shaft portion 51 is provided with a screw portion 53 threadedly connected to the first clamping block 20, and the end of the limiting head 52 facing away from the connecting shaft portion 51 is provided with a hexagonal groove 521. The connecting support 5 can be rotated by using a hexagonal wrench in combination with the hexagonal groove 521 to achieve disassembly or installation of the first connecting support 5.

[0031] As a preferred embodiment, the connecting shaft portion 51 is provided with a first compression spring 54 and two first washers 55, wherein one of the first washers 55 abuts against the fixed clamp body 2, and the other first washer 55 abuts against the limiting head 52, and the first compression spring 54 is located between the two first washers 55, and the two ends of the first compression spring 54 respectively abut against the two first washers 55. Through the action of the first compression spring 54, the back side of the first clamp block 20 can be kept in contact with the fixed clamp body 2, so that the height position of the first clamp block 20 is basically consistent with that of the second clamp block 30 as much as possible, thereby reducing the range of movement of the first clamp block 20 and ensuring that the first clamp block 20 can quickly cooperate with the second clamp block 30 to clamp the water pump shaft.

[0032] As a preferred embodiment, an elastic rubber sleeve 56 sleeved on the connecting shaft portion 51 is inserted into the connecting support hole, and the outer wall of the elastic rubber sleeve 56 contacts the hole wall of the connecting support hole, and the inner wall contacts the outer wall of the connecting shaft portion 51. Further, the elastic rubber sleeve 56 is made of rubber or polyurethane material, preferably polyurethane material, and the gap between the hole wall of the connecting support hole and the outer wall of the connecting shaft portion 51 is filled with the elastic rubber sleeve 56, so that the first clamping block 20 can move relative to the movable clamp body 3, and the first clamping block 20 can always be basically consistent in height position with the second clamping block 30 under the elastic support of the elastic rubber sleeve 56, thereby ensuring that the first clamping block 20 can quickly cooperate with the second clamping block 30 to clamp the water pump shaft.

[0033] As a preferred embodiment, the first clamp block 20 and the second clamp block 30 are both made of aluminum or aluminum alloy. The first clamp block 20 and the second clamp block 30 made of aluminum or aluminum alloy are soft in texture, so that the first clamp block 20 and the second clamp block 30 are not likely to damage the surface of the water pump shaft, thereby ensuring the quality of the water pump shaft.

[0034] As a preferred embodiment, the movable jaw body 3 includes a movable guide portion 31 and a movable jaw portion 32 integrally provided on the movable guide portion 31, and the fixed jaw body 2 includes a fixed seat body portion 21 and a fixed jaw portion 22 integrally provided on the fixed seat body portion 21, the fixed seat body portion 21 is provided with a sliding guide groove 23 for guiding the movement of the movable jaw body 3, and the movable guide portion 31 is slidably fitted in the sliding guide groove 23; further, the fixed seat body portion 21 is provided with a sliding support protrusion 211 that is in sliding contact with the bottom of the movable guide portion 31, and the sliding support protrusion 211 lifts the movable jaw body 3 to avoid the bottom of the movable jaw body 3 from contacting with the fixed jaw body 2 over a large area and generating a large friction force; the left and right sides of the movable guide portion 31 are provided with sliding contact protrusions 311 for sliding contact with the left and right sides of the sliding guide groove 23, and the sliding contact protrusions 311 are slidably fitted on the left and right sides of the sliding guide groove 23, so that the side of the movable jaw body 3 can be prevented from contacting with the fixed jaw body 2 over a large area and generating a large friction force. The sliding support protrusion 211 and the sliding contact protrusion 311 can reduce the friction of the movable clamp body 3 when sliding, improve the smoothness of the movable clamp body 3 when sliding, and facilitate workers to operate the movable clamp body 3 to release or clamp the water pump shaft.

[0035] As a preferred embodiment, the fixed clamp part 22 is provided with a first mounting position 221 for installing the first clamp block 20, and the movable clamp part 32 is provided with a second mounting position 321 for installing the second clamp block 30, and the first mounting position 221 and the second mounting position 321 both include a vertical mating surface and a transverse mating surface connected in an L shape, wherein the height of the transverse mating surface of the first mounting position 221 is about 0.5-1mm lower than the height of the transverse mating surface of the first mounting position 221, and a movable gap H is left between the bottom surface of the first clamp block 20 and the transverse mating surface of the first mounting position 221, so that the first clamp block 20 can move relative to the fixed clamp body 2.

[0036] As a preferred embodiment, the movable guide portion 31 is provided with a screw avoidance groove 312 for accommodating the drive screw 4. The screw avoidance groove 312 is arranged through the bottom and rear end of the movable guide portion 31. By hiding the drive screw 4 in the screw avoidance groove 312, the risk of the screw segment 43 of the drive screw 4 being damaged by external forces can be reduced. Furthermore, the sliding guide groove 23 is provided with a matching convex portion 232, and the matching screw hole is opened on the matching convex portion 232. When the movable pliers body 3 is matched with the fixed pliers body 2, the matching convex portion 232 extends into the screw avoidance groove 312, and the drive screw 4 can be matched with the matching screw hole located on the matching convex portion 232.

[0037] As a preferred embodiment, the driving screw 4 includes a driving head 41, an extension section 42 and a screw section 43 which are connected in sequence along the axial direction; a matching through hole is provided on the movable guide portion 31; the driving head 41 is located outside the movable caliper body 3; the extension section 42 passes through the matching through hole; the screw section 43 cooperates with the matching screw hole in the screw avoidance groove 312; the outer diameter of the driving head 41 is larger than the diameter of the matching through hole; the extension section 42 is provided with a second compression spring 44 and two second washers 45 located in the screw avoidance groove 312; an open pin 46 is also provided on the extension section 42; the two second washers 45 are located between the open pin 46 and one end of the movable caliper body 3 provided with the matching through hole; the second compression spring 44 is located between the two second washers 45; the above structure can prevent the driving screw 4 from falling off the movable caliper body 3, thereby ensuring stability in use.

[0038] As a preferred embodiment, the fixing assembly 1 includes a mounting base 11 and a rotating truncated table 12. The outer periphery of the mounting base 11 is evenly distributed with a plurality of connecting ears, and the connecting ears are provided with connecting through holes. The screw portion 53 of the connecting bolt can pass through the connecting through holes and connect to the workbench to realize the installation of the mounting base 11.

[0039] Furthermore, a rotating channel 111 is provided in the middle of the mounting base 11, and a rotating limit groove 112 is provided at the bottom of the rotating channel 111. A rotating limit ring 121 is provided on the rotating table 12, which is rotatably engaged in the rotating limit groove 112. The top of the rotating limit ring 121 is in sliding contact with the groove top of the rotating limit groove 112, so as to limit the rotating limit ring 121 from upwardly separating from the rotating channel 111. The bottom of the fixed seat body 21 is movably abutted against the rotating table 12 and the top of the mounting base 11. The fixed seat body 21 is provided with at least one member for engaging with the rotating table 1 2 locking connection, the locking assembly includes a locking piece 13 and a locking handle 14, the locking piece 13 includes a locking head and a locking screw arranged from top to bottom, the locking handle 14 is inserted in the locking head, the lower end of the locking screw passes through the locking through hole on the fixed seat body 21 and is threadedly connected to the locking screw hole of the rotating round table 12, so that the fixed seat body 21 and the rotating connection part are combined and connected to achieve the installation of the fixed pliers body 2; in addition, after the worker operates the locking handle 14 to loosen the locking piece 13, the user can operate the fixed pliers body 2 to rotate and adjust the angle relative to the mounting base 11 to meet different usage requirements.

[0040] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. A water pump shaft locking mechanism, comprising a fixed caliper body (2), a movable caliper body (3) slidably fitted on the fixed caliper body (2), a driving screw (4) rotatably mounted on the movable caliper body (3), an operating handle (40) inserted through the end of the driving screw (4), a matching screw hole provided on the fixed caliper body (2), the driving screw (4) being threadably fitted with the matching screw hole; characterized in that: The fixed clamp body (2) is provided with a first clamp block (20); the movable clamp body (3) is provided with a second clamp block (30), and the second clamp block (30) is detachably mounted on the movable clamp body (3); a shaft receiving groove (100) for receiving a water pump shaft is provided on one end of the first clamp block (20) facing the second clamp block (30) and one end of the second clamp block (30) facing the first clamp block (20), and the cross section of the shaft receiving groove (100) is V-shaped or trapezoidal; The first clamp block (20) is movably mounted on the fixed clamp body (2) via a connecting support member (5); the connecting support member (5) comprises a connecting shaft portion (51) and a limiting head portion (52) connected to one end of the connecting shaft portion (51); a connecting support hole is provided on the fixed clamp body (2); the other end of the connecting shaft portion (51) passes through the connecting support hole and is connected to the first clamp block (20); the hole diameter of the connecting support hole is larger than the outer diameter of the connecting shaft portion (51) and smaller than the outer diameter of the limiting head portion (52); and the first clamp block (20) can be movably arranged relative to the fixed clamp body (2).

2. The water pump shaft locking mechanism according to claim 1, characterized in that: An operating handle (40) is inserted through the end of the driving screw rod (4).

3. The water pump shaft locking mechanism according to claim 1, characterized in that: The connecting shaft portion (51) is provided with a screw portion (53) threadedly connected to the first clamping block (20), and the end of the limiting head portion (52) facing away from the connecting shaft portion (51) is provided with a hexagonal groove (521).

4. The water pump shaft locking mechanism according to claim 1, characterized in that: The connecting shaft portion (51) is sleeved with a first compression spring (54) and two first washers (55), wherein one of the first washers (55) abuts against the fixed caliper body (2), and the other first washer (55) abuts against the limit head (52), the first compression spring (54) is located between the two first washers (55), and two ends of the first compression spring (54) abut against the two first washers (55) respectively.

5. The water pump shaft locking mechanism according to claim 1, characterized in that: An elastic rubber sleeve (56) sleeved on the connecting shaft portion (51) is inserted into the connecting support hole, the outer ring wall surface of the elastic rubber sleeve (56) contacts the hole wall of the connecting support hole, and the inner ring wall surface contacts the outer wall of the connecting shaft portion (51).

6. The water pump shaft locking mechanism according to claim 1, characterized in that: The first clamping block (20) and the second clamping block (30) are both made of aluminum or aluminum alloy.

7. The water pump shaft locking mechanism according to claim 1, characterized in that: The movable jaw body (3) comprises a movable guide portion (31) and a movable jaw portion (32) integrally formed on the movable guide portion (31); the fixed jaw body (2) comprises a fixed seat body portion (21) and a fixed jaw portion (22) integrally formed on the fixed seat body portion (21); the fixed seat body portion (21) is provided with a sliding guide groove (23) for guiding the movable jaw body (3) to move; the movable guide portion (31) is slidably fitted in the sliding guide groove (23).

8. The water pump shaft locking mechanism according to claim 7, characterized in that: The fixed clamp portion (22) is provided with a first mounting position (221) for mounting the first clamp block (20); the first mounting position (221) comprises a vertical mating surface and a transverse mating surface connected in an L-shape; a movable gap H is left between the bottom surface of the first clamp block (20) and the transverse mating surface of the first mounting position (221).

9. The water pump shaft locking mechanism according to claim 7, characterized in that: A screw avoidance groove (312) for accommodating the driving screw (4) is provided in the movable guide portion (31), and the screw avoidance groove (312) is provided through the bottom and rear end of the movable guide portion (31).

10. The water pump shaft locking mechanism according to claim 9, characterized in that: The driving screw rod (4) comprises a driving head (41), an extension section (42) and a screw rod section (43) which are connected in sequence along the axial direction; a matching through hole is provided on the movable guide portion (31); the driving head (41) is located outside the movable caliper body (3); the extension section (42) passes through the matching through hole; the screw rod section (43) matches with the matching screw hole in the screw rod avoidance groove (312); a second compression spring (44) and two second washers (45) which are located in the screw rod avoidance groove (312) are sleeved on the extension section (42); a split pin (46) is also provided on the extension section (42); the two second washers (45) are located between the split pin (46) and one end of the movable caliper body (3) provided with the matching through hole; and the second compression spring (44) is located between the two second washers (45).

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