Water pump impeller shaft anti-deviation ejector pin structure for cylindrical grinding machine

Abstract

The utility model relates to the technical field of water pump production and processing, and discloses a water pump impeller shaft anti-offset ejector pin structure for a cylindrical grinding machine, which comprises a base, the top of the base is fixedly connected with a bracket, and the wall surface of the bracket is fixedly connected with an electric cylinder; the pressing and fixing structure is arranged on the wall face of the base and used for fixing a water pump impeller shaft, the pressing and fixing structure comprises a bottom box, supporting rods, a fixing column, an abutting part and a self-adaptive sleeve, the bottom box is fixedly connected to the bottom of the base, a circular groove is formed in the center of the top of the base in a penetrating mode, and the supporting rods are symmetrically and fixedly connected into a cavity of the bottom box; the fixing columns are fixedly connected to the tops of the supporting rods, the abutting pieces are symmetrically and rotationally connected between the symmetrical fixing columns, the self-adaptive sleeves are slidably connected to the outer wall faces of the fixing columns, and the water pump impeller only needs to be pressed on the top of the base in an aligned mode when the water pump impeller needs to be fixed through the pressing and fixing structure. According to the scheme, the water pump impeller can be fixed more conveniently and quickly, and the working time is effectively shortened.

Description

Technical Field

[0001] This utility model belongs to the field of water pump manufacturing and processing. Specifically, it relates to a structure for preventing the impeller shaft of a water pump from shifting when using a cylindrical grinding machine. Background Technology

[0002] The anti-offset ejector pin for water pump impeller shafts on cylindrical grinding machines is a fixture device specifically designed for precision shaft machining. It is mainly used to fix the water pump impeller shaft and prevent it from shifting or vibrating during grinding, thus ensuring machining accuracy.

[0003] The prior art (publication number: CN215659509U) discloses a grinding device for processing water pump impellers, including a worktable, a placement platform fixedly installed on the worktable, a protective chamber fixedly installed on the placement platform, an electric telescopic rod fixedly installed on the inner top surface of the protective chamber, and a drive motor fixedly installed on the lower wall of the upper output end of the electric telescopic rod.

[0004] The existing technology fixes the pump impeller by placing it flat on the device and then bolting it to the structure. However, while the existing technology can fix the pump impeller, it requires manual control of the bolt structure each time the pump impeller is fixed and removed. This process not only increases the working time, but the bolt structure is also small and easy to lose. Once lost, the existing technology can no longer fix the pump impeller.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A structure for preventing displacement of the impeller shaft of a water pump in an external cylindrical grinding machine includes:

[0008] The base has a bracket fixedly connected to its top, and an electric cylinder is fixedly connected to the wall of the bracket.

[0009] The pressure-fixing structure is installed on the wall of the base to fix the water pump impeller shaft. The pressure-fixing structure includes: a base box, support rods, fixed columns, abutment members, and self-adaptive sleeves. The base box is fixedly connected to the bottom of the base, and a circular groove is opened through the center of the top of the base. The support rods are symmetrically fixedly connected to the cavity of the base box. The fixed columns are fixedly connected to the top of each support rod. The abutment members are symmetrically rotatably connected between the symmetrical fixed columns. The self-adaptive sleeve is slidably connected to the outer wall of the fixed column. The fixed column can be inserted into the shaft groove of the water pump impeller shaft.

[0010] In a preferred embodiment of this utility model, the bottom box is a hollow cylinder with an open top, the support rod is cylindrical, the fixed column is composed of a semi-circular rod and a semi-cone, the abutting member is a V-shaped rod, the symmetrical abutting members are arranged in a V-shape between the symmetrical fixed columns, the adaptive sleeve is cylindrical, and multiple adaptive sleeves are provided on the outer wall of the symmetrical fixed columns. Each adaptive sleeve is gradually larger in size, and the multiple adaptive sleeves are connected to each other. The bottom of the adaptive sleeve can contact the inclined surface of the abutting member.

[0011] In a preferred embodiment of this utility model, the compression structure further includes a shaft, a limiting post, a return spring, and a through slot. The shaft is symmetrically fixedly connected between the symmetrical fixed posts and can pass through the wall of the contacting member. The limiting post is fixedly connected in the cavity of the bottom box. The return spring is sleeved on the outer wall of each limiting post, and the through slot is opened on the top of each self-adaptive sleeve.

[0012] In a preferred embodiment of this utility model, the shaft is cylindrical, the contacting member rotates between symmetrical fixed columns via the shaft, the limiting column is cylindrical, the top of the limiting column is arc-shaped, and multiple identical limiting columns are evenly arranged inside the cavity of the bottom box.

[0013] In a preferred embodiment of this utility model, each adaptive sleeve has a circular groove symmetrically provided at its bottom to fit the limiting post. Each limiting post can be inserted into the circular groove corresponding to the wall surface of the adaptive sleeve. The top of the return spring can contact the bottom of the adaptive sleeve. The through groove has a rectangular opening, and the width of the through groove can be adapted to the width of the contacting part.

[0014] In a preferred embodiment of this utility model, a pressure member is fixedly connected to the bottom of the electric cylinder, and the pressure member is located directly above the symmetrical fixed column.

[0015] In a preferred embodiment of the present invention, the pressing component is composed of a disc and an isosceles triangular block. The isosceles triangular block of the pressing component is inverted under the disc of the pressing component. The disc of the pressing component has symmetrical rectangular slots. Each fixed column can pass through the rectangular slot of the disc of the pressing component. The arc surface of the isosceles triangular block of the pressing component can contact the wall surface of the symmetrical abutment component.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By setting up a pressing structure, the water pump impeller only needs to be aligned and pressed onto the top of the base when it needs to be fixed. Compared with the existing technology, this solution is more convenient and faster in fixing the water pump impeller, effectively reducing working time.

[0018] 2. By setting pressure components, the position of the contact components can be fixed, preventing the contact components from moving when fixing the water pump impeller, thereby improving the stability of this solution during operation.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a disassembly diagram of the adaptive sleeve and base of this utility model;

[0023] Figure 3 This is a schematic diagram of the symmetrical fixed column structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the disassembly of the adaptive sleeve and the fixed column of this utility model;

[0025] Figure 5 This is an exploded view of the wall structure of the limiting column of this utility model.

[0026] In the diagram: 20, base; 21, bracket; 22, electric cylinder; 23, pressure piece; 30, bottom box; 31, support rod; 32, fixed column; 33, shaft column; 34, contact piece; 35, limit column; 36, return spring; 37, self-adaptive sleeve; 38, through slot. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] like Figure 1 and Figure 2 As shown, a water pump impeller shaft anti-displacement ejector pin structure for an external cylindrical grinding machine includes: a base 20, a bracket 21 fixedly connected to the top of the base 20, an electric cylinder 22 fixedly connected to the wall of the bracket 21, the base 20 being rotatably mounted on the grinding machine, and the electric cylinder 22 being electrically connected to a corresponding power source. This is existing technology and will not be described in detail here.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a pressure-fixing structure is installed on the wall of the base 20 to fix the water pump impeller shaft. The pressure-fixing structure includes: a base box 30, support rods 31, fixed columns 32, abutting members 34, and adaptive sleeves 37. The base box 30 is fixedly connected to the bottom of the base 20, and a circular groove is opened through the center of the top of the base 20. The support rods 31 are symmetrically fixedly connected to the cavity of the base box 30. The fixed columns 32 are fixedly connected to the top of each support rod 31. The abutting members 34 are symmetrically rotatably connected between the symmetrical fixed columns 32. The adaptive sleeves 37 are slidably connected to the outer wall of the fixed columns 32. The fixed columns 32 can be inserted into the central groove of the water pump impeller shaft.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the bottom box 30 is a hollow cylinder with an open top. The support rod 31 is cylindrical. The fixed column 32 is composed of a semi-circular rod and a semi-cone. The abutment 34 is a V-shaped rod. The symmetrical abutment 34s are arranged in a V-shape between the symmetrical fixed columns 32. The adaptive sleeve 37 is cylindrical. Multiple adaptive sleeves 37 are provided on the outer wall of the symmetrical fixed columns 32. Each adaptive sleeve 37 is progressively larger in size. The multiple adaptive sleeves 37 are sleeved together. The bottom of the adaptive sleeve 37 can contact the inclined surface of the abutment 34. The pressure-fixing structure also includes a shaft 33, a limiting post 35, a return spring 36, and a through groove 38. The shaft 33 is symmetrically fixed between the symmetrical fixed columns 32. The shaft 33 can pass through the wall of the abutment 34. The limiting post 35 is fixedly connected in the cavity of the bottom box 30. The return spring 36... 6 are fitted onto the outer wall of each limiting post 35. A through groove 38 is opened on the top of each adaptive sleeve 37. The shaft post 33 is cylindrical. The abutment 34 rotates between the symmetrical fixed posts 32 through the shaft post 33. The limiting post 35 is cylindrical. The top of the limiting post 35 is arc-shaped. Multiple identical limiting posts 35 are evenly arranged in the cavity of the bottom box 30. The bottom of each adaptive sleeve 37 is symmetrically provided with a circular groove that matches the limiting post 35. Each limiting post 35 can be inserted into the circular groove corresponding to the wall of the adaptive sleeve 37. The top of the return spring 36 can contact the bottom of the adaptive sleeve 37. The through groove 38 is rectangular. The width of the through groove 38 can match the width of the abutment 34. The bottom of the electric cylinder 22 is fixedly connected to a pressure member 23. The pressure member 23 is located directly above the symmetrical fixed posts 32.

[0031] In practical use, first align the shaft groove of the impeller wall surface to be fixed with the symmetrical fixed post 32, then press downwards. The adaptive sleeve 37, which fits the size of the shaft groove, will be inserted into the shaft groove. All the larger adaptive sleeves 37 on the periphery will slide downwards due to the downward pressure of the impeller. When the adaptive sleeves 37 slide downwards, they will contact the outer wall surface of the contact member 34. When the contact member 34 is pressed by the adaptive sleeve 37, it will rotate around the shaft post 33. At this time, the lower half of the contact member 34 will move towards the other contact member 34, while the upper half of the contact member 34 will move away from the shaft post 33. The symmetrical fixed columns 32 pass through and abut against the wall surface of the water pump impeller shaft groove in the through slot 38. When the adaptive sleeve 37 moves down, it will compress the return spring 36 at its bottom and the circular groove on the wall of the adaptive sleeve 37 will dock with the limiting column 35. At this time, the water pump impeller is initially fixed. Then, the electric cylinder 22 is controlled to extend downward. The electric cylinder 22 will drive the pressing part 23 to extend downward synchronously. The isosceles triangular block of the pressing part 23 will press into the gap at the top of the symmetrical abutting part 34, and the disc of the pressing part 23 will press onto the top of the water pump impeller shaft groove. At this time, the fixed water pump impeller can be ground by a grinding machine.

[0032] In summary, by setting up a pressing structure, the water pump impeller only needs to be aligned and pressed onto the top of the base 20 when it needs to be fixed. Compared with the existing technology, this solution is more convenient and faster in fixing the water pump impeller, effectively reducing working time.

[0033] like Figure 1 As shown, the pressure member 23 is composed of a disc and an isosceles triangular block. The isosceles triangular block of the pressure member 23 is inverted under the disc of the pressure member 23. The disc of the pressure member 23 has rectangular slots symmetrically opened. Each fixed post 32 can pass through the rectangular slot of the disc of the pressure member 23. The arc surface of the isosceles triangular block of the pressure member 23 can contact the wall surface of the symmetrical contact member 34.

[0034] In actual use, the electric cylinder 22 will drive the pressing part 23 to extend downward in sync, and the isosceles triangular block of the pressing part 23 will press into the gap at the top of the symmetrical contact part 34, while the disc of the pressing part 23 will press onto the top of the water pump impeller shaft groove.

[0035] In summary, by setting the pressure member 23, the position of the contact member 34 can be fixed, thus preventing the contact member 34 from moving when fixing the water pump impeller, thereby improving the stability of this solution during operation.

[0036] Working principle: First, align the shaft groove of the impeller wall to be fixed with the symmetrical fixed post 32, then press downwards. The adaptive sleeve 37, which fits the size of the shaft groove, will be inserted into the shaft groove. All the larger adaptive sleeves 37 on the periphery will slide downwards due to the downward pressure of the impeller. When the adaptive sleeves 37 slide downwards, they will contact the outer wall of the contact member 34. When the contact member 34 is pressed by the adaptive sleeve 37, it will rotate around the shaft post 33. At this time, the lower half of the contact member 34 will move towards the other contact member 34, while the upper half of the contact member 34 will pass through the symmetrical fixed posts 32 and the through groove 38 and abut against the wall of the impeller shaft groove. The adaptive sleeve 37 moves downwards... When the return spring 36 at the bottom is compressed, the circular groove on the wall of the adaptive sleeve 37 will align with the limiting post 35, and the water pump impeller will be initially fixed. Then, the electric cylinder 22 is controlled to extend downward, and the electric cylinder 22 will drive the pressing part 23 to extend downward synchronously. The isosceles triangular block of the pressing part 23 will press into the gap at the top of the symmetrical contacting part 34, and the disc of the pressing part 23 will press onto the top of the water pump impeller shaft groove. At this time, the fixed water pump impeller can be ground by the grinding machine. After the grinding is completed, the electric cylinder 22 is controlled to retract, and then the water pump impeller on the wall of the adaptive sleeve 37 is removed. The return spring 36 will push the lowered adaptive sleeve 37 back to its original position. At this time, the next water pump impeller to be ground can be placed for processing.

[0037] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A water pump impeller shaft anti-displacement ejector pin structure for an external cylindrical grinding machine, characterized in that, include: The base (20) has a bracket (21) fixedly connected to its top and an electric cylinder (22) fixedly connected to its wall. The pressure-fixing structure is set on the wall of the base (20) to fix the water pump impeller shaft. The pressure-fixing structure includes: a base box (30), a support rod (31), a fixed column (32), an abutment (34), and an adaptive sleeve (37). The base box (30) is fixedly connected to the bottom of the base (20). A circular groove is opened through the center of the top of the base (20). The support rod (31) is symmetrically fixedly connected in the cavity of the base box (30). The fixed column (32) is fixedly connected to the top of each support rod (31). The abutment (34) is symmetrically rotated and connected between the symmetrical fixed columns (32). The adaptive sleeve (37) is slidably connected to the outer wall of the fixed column (32). The fixed column (32) can be inserted into the shaft groove of the water pump impeller shaft.

2. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 1, characterized in that, The bottom box (30) is a hollow cylinder with an open top. The support rod (31) is cylindrical. The fixed column (32) is composed of a semi-circular rod and a semi-cone. The contact element (34) is a T-shaped rod. The symmetrical contact elements (34) are arranged in a figure-eight shape between the symmetrical fixed columns (32). The adaptive sleeve (37) is cylindrical. Multiple adaptive sleeves (37) are provided on the outer wall of the symmetrical fixed column (32). The size of each adaptive sleeve (37) gradually increases. Multiple adaptive sleeves (37) are connected to each other. The bottom of the adaptive sleeve (37) can contact the inclined surface of the contact element (34).

3. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 1, characterized in that, The compression structure also includes a shaft column (33), a limiting column (35), a return spring (36), and a through slot (38). The shaft column (33) is symmetrically fixed between the symmetrical fixed columns (32). The shaft column (33) can pass through the wall of the contact member (34). The limiting column (35) is fixedly connected in the cavity of the bottom box (30). The return spring (36) is sleeved on the outer wall of each limiting column (35). The through slot (38) is opened on the top of each adaptive sleeve (37).

4. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 3, characterized in that, The shaft (33) is cylindrical, and the contact member (34) rotates between the symmetrical fixed columns (32) through the shaft (33). The limiting column (35) is cylindrical, and the top of the limiting column (35) is arc-shaped. Multiple identical limiting columns (35) are evenly arranged in the cavity of the bottom box (30).

5. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 3, characterized in that, Each adaptive sleeve (37) has a circular groove symmetrically provided at its bottom to fit the limiting post (35). Each limiting post (35) can be inserted into the circular groove corresponding to the wall of the adaptive sleeve (37). The top of the return spring (36) can contact the bottom of the adaptive sleeve (37). The through groove (38) has a rectangular opening and the width of the through groove (38) can be adapted to the width of the contacting member (34).

6. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 1, characterized in that, The bottom of the electric cylinder (22) is fixedly connected to a pressure member (23), which is located directly above the symmetrical fixed column (32).

7. The anti-displacement ejector pin structure for a water pump impeller shaft of an external cylindrical grinding machine according to claim 6, characterized in that, The pressure member (23) is composed of a disc and an isosceles triangular block. The isosceles triangular block of the pressure member (23) is inverted under the disc of the pressure member (23). The disc of the pressure member (23) has rectangular slots symmetrically opened. Each fixed column (32) can pass through the rectangular slot of the disc of the pressure member (23). The arc surface of the isosceles triangular block of the pressure member (23) can contact the wall surface of the symmetrical contacting member (34).

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