Broaching equipment for metal parts of electric tool

Abstract

The invention relates to the technical field of broaching, in particular to broaching equipment for electric tool metal parts, which specifically comprises a worktable, hydraulic push rods are fixedly connected to two ends of the top of the worktable, and a clamping device is fixedly connected to one end of each hydraulic push rod; the supporting frame is fixed to the center of the top of the workbench, a three-jaw chuck is fixedly connected to the top of the supporting frame, and cleaning devices are fixedly connected to the portions, located on the two sides of the three-jaw chuck, of the top of the supporting frame; the recycling groove is formed in the top of the workbench, a recycling cavity is formed in the portion, located below the recycling groove, in the workbench, and filtering holes communicated with the recycling cavity are formed in the bottom of the recycling groove; a water inlet of the cooling water pump is communicated with one side of the recovery cavity. According to the broaching equipment for the metal parts of the electric tool, different broaching tools can be freely replaced, the step of taking down and reinstalling is not needed, the replacement operation of the broaching tools is simple, and the coaxiality is good.

Description

Technical Field

[0001] The invention relates to the technical field of broaching, in particular to a broaching device for metal parts of electric tools. Background Art

[0002] Broaching refers to the use of a special broach to cut a very thin metal layer from the workpiece one by one, so that the surface can achieve high dimensional accuracy and low roughness. It is a highly efficient processing method. During broaching, the broach cuts the processed surface into shape at one time, so the broaching machine only has the main motion and no feed motion. The broaching process has thin chips and stable cutting motion, so it has high processing accuracy and small surface structure value. The broaching equipment currently used needs to remove the broach when replacing the broach after completing a broaching, and then re-clamp the broach, which is troublesome to operate, and the broach cannot be cleaned after broaching is completed, which is inconvenient to use. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a broaching device for metal parts of electric tools, which solves the problem that the broaching device currently used needs to remove the broach and then re-clamp the broach when replacing the broach after completing a broaching operation, which is cumbersome to operate, and the broach cannot be cleaned after broaching is completed, which is inconvenient to use.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A broaching device for metal parts of electric tools, specifically comprising: A workbench, with hydraulic push rods fixedly connected to both ends of the top of the workbench, and a clamping device fixedly connected to one end of the hydraulic push rod; A support frame, which is fixed at the center of the top of the workbench, a three-jaw chuck is fixedly connected to the top of the support frame, and a cleaning device is fixedly connected to the parts of the top of the support frame located on both sides of the three-jaw chuck; A recovery tank is provided on the top of the workbench, a recovery cavity is provided in the part of the workbench below the recovery tank, and a filter hole communicating with the recovery cavity is provided at the bottom of the recovery tank; A cooling water pump, wherein the water inlet of the cooling water pump is connected to one side of the recovery cavity, and the water outlet of the cooling water pump is connected to the cleaning device; The clamping device comprises: A support plate, one side of which is provided with an annular groove, and one side of the support plate is fixedly connected with a rotating device at the center of the annular groove; A fixing frame, which is arranged on one side of the support plate, a connecting rod is fixedly connected to one side of the fixing frame close to the support plate, an end of the connecting rod away from the fixing frame is fixedly connected to a limiting slider, and a central position of one side of the fixing frame is fixedly connected to the rotating device; A fixed plate, one side of which is fixedly connected to the fixed frame, and a fixing groove is provided at the center of one side of the fixed plate away from the fixed frame; A telescopic push rod is fixed on one side of the fixing plate close to the fixing groove, and a clamping head is fixedly connected to the bottom of the telescopic push rod.

[0005] A clamping device is provided, and when in use, the broach can be placed in the fixed groove on one side of the fixed disk. Since the fixed disk is provided with multiple groups, multiple groups of broaches can be fixed on one side of the fixed frame. After the broach is placed in the fixed groove, the clamping head can be driven by the telescopic push rod to insert into the clamping groove at the end of the broach, and the broach can be fixed in the fixed groove. After a group of broaches is broached, the fixed frame can be rotated. The fixed frame rotates under the support of the rotating device and the limit slider, and drives the broach to rotate. When the broach is rotated to a suitable position, the hydraulic push rod drives the broach to pass through the workpiece and fix it to the fixed disk inserted at the other end. Different broaches can be freely replaced without the need to remove and reinstall them. The broach replacement operation is simple.

[0006] Preferably, a broach is slidably connected inside the fixing groove, and both ends of the broach inside the fixing groove are provided with clamping grooves matched with the clamping head.

[0007] Preferably, the support plate is fixedly connected to the movable end of the hydraulic push rod on one side away from the annular slide groove, and the connecting support rod and the fixed plate are provided in multiple groups and are evenly distributed on the fixed frame. The limit slider is arranged inside the annular slide groove and is slidably connected to the inner wall of the annular slide groove. A connecting support rod and a limit slider are provided. When the broach is subjected to tension, the tension of the broach is transmitted to the fixed plate through the clamping head and the telescopic push rod, and then transmitted to the connecting support rod and the limit slider through the fixed plate. The tension of the broach can be borne by the cooperation of the limit slider and the annular limit groove, so as to avoid the tension of the broach from acting on the rotating device, thereby facilitating the protection of the rotating device.

[0008] Preferably, the rotating device includes a positioning plate, the inner wall of the positioning plate is rotatably connected to the rotating plate through a rotating bolt, the inner wall side of the positioning plate is provided with an arc-shaped slide groove, the side of the rotating plate is provided with a telescopic groove corresponding to the arc-shaped slide groove, the inner wall of the telescopic groove is slidably connected to the limit plate, an arc spring is provided between the inner wall of the telescopic groove and the limit plate, one side of the rotating plate is fixedly connected to a rotating column, and a rotating device is provided. When the broach needs to be replaced, the fixed frame is rotated, the fixed frame drives the rotating column to rotate, the rotating column drives the rotating plate to rotate, and the rotating plate drives the rotating column through the telescopic groove The limit plate rotates, and at the same time, the limit plate is squeezed by the inner wall of the arc-shaped slide groove and moves toward the inside of the telescopic groove, and squeezes the arc spring. When the limit plate completely enters the telescopic groove, the rotating plate continues to rotate. When the limit plate moves to the position of the next set of arc-shaped slide grooves driven by the telescopic groove, the limit plate can be driven by the thrust of the arc spring to extend into the arc-shaped slide groove to fix the limit plate. The rotation and fixing operations are relatively convenient. Since the arc-shaped slide groove and the fixed plate correspond one to one, the rotating plate can be rotated to a suitable angle through the cooperation of the limit plate and the arc-shaped slide groove, so as to ensure the coaxiality.

[0009] Preferably, one side of the positioning plate is fixedly connected to the support plate, and one end of the rotating column passes through the positioning plate and is fixedly connected to the fixing frame.

[0010] Preferably, both ends of the arc spring are fixedly connected to the inner wall of the telescopic slot, the curvature of the limit plate is adapted to the curvature of the inner wall of the arc-shaped slide slot, and the arc-shaped slide slots are provided in multiple groups and correspond one-to-one to the fixed plates.

[0011] Preferably, the cleaning device includes a cleaning tube, which is arranged in an annular shape, the inner side of the cleaning tube is connected to an inclined nozzle, one side of the cleaning tube is fixedly connected to an annular fixing ring, the inner wall of the annular fixing ring is fixedly connected to a cleaning brush, and a cleaning device is provided. After the broach passes through the workpiece inside the three-jaw chuck, the broach can be brushed by the cleaning brush inside the annular fixing ring to loosen and brush off the remaining debris on the broach. When the broach passes through the fixing ring and enters the cleaning tube, the cooling water pump sends cooling water into the cleaning tube and sprays it on the broach through the inclined nozzle inside the cleaning tube. The inclined nozzle faces the tangent direction of the broach, so that the cooling water can be sprayed into the gap between the debris and the broach, which is convenient for flushing away the debris not cleaned by the cleaning brush while cooling, and the cleaning effect is better.

[0012] Preferably, one side of the cleaning pipe is connected to the water outlet of the cooling water pump, and one side of the annular fixing ring is fixedly connected to the supporting frame through a bracket.

[0013] The present invention provides a broaching device for metal parts of electric tools. It has the following beneficial effects: (1) This kind of broaching equipment for metal parts of electric tools is provided with a clamping device. When in use, the broach can be placed in the fixed groove on one side of the fixed disk. Since the fixed disk is provided with multiple groups, multiple groups of broaches can be fixed on one side of the fixed frame. After the broach is placed in the fixed groove, the clamping head can be driven by the telescopic push rod to insert into the clamping groove at the end of the broach, so that the broach can be fixed in the fixed groove. When a group of broaches is broached, the fixed frame can be rotated. The fixed frame rotates under the support of the rotating device and the limit slider, and drives the broach to rotate. When the broach is rotated to a suitable position, the hydraulic push rod drives the broach to pass through the workpiece and fix it to the fixed disk inserted at the other end. Different broaches can be freely replaced without the need to remove and reinstall them. The broach replacement operation is simple.

[0014] (2) The broaching device for metal parts of an electric tool is provided with a connecting support rod and a limit slider. When the broach is subjected to a pulling force, the pulling force of the broach is transmitted to the fixed plate through the chuck and the telescopic push rod, and then transmitted to the connecting support rod and the limit slider through the fixed plate. The pulling force of the broach can be borne by the cooperation of the limit slider and the annular limit groove, thereby preventing the pulling force of the broach from acting on the rotating device, thereby facilitating the protection of the rotating device.

[0015] (3) The broaching device for metal parts of an electric tool is provided with a rotating device. When the broach needs to be replaced, the fixed frame is rotated, and the fixed frame drives the rotating column to rotate. The rotating column drives the rotating disk to rotate. The rotating disk drives the limit disk to rotate through the telescopic slot. While the limit disk rotates, it is squeezed by the inner wall of the arc-shaped slot and moves toward the inside of the telescopic slot, and squeezes the arc spring. When the limit disk completely enters the telescopic slot, the rotating disk continues to rotate. When the limit disk moves to the position of the next group of arc-shaped slots driven by the telescopic slot, the limit disk can be extended into the arc-shaped slot under the thrust of the arc spring to fix the limit disk. The rotation and fixing operations are relatively convenient. Since the arc-shaped slots correspond to the fixed disk one by one, the rotating disk can be rotated to a suitable angle through the cooperation of the limit disk and the arc-shaped slot, so as to ensure the coaxiality.

[0016] (4) This kind of broaching equipment for metal parts of electric tools is provided with a cleaning device. After the broach passes through the workpiece inside the three-jaw chuck, it passes through the annular fixing ring and the inside of the cleaning tube. When passing through, the broach can be brushed by the cleaning brush inside the annular fixing ring to loosen and brush off the remaining debris on the broach. When the broach passes through the fixing ring and enters the cleaning tube, the cooling water pump sends cooling water into the cleaning tube and sprays it on the broach through the inclined nozzle on the inside of the cleaning tube. The inclined nozzle is facing the tangential direction of the broach, so that the cooling water can be sprayed into the gap between the debris and the broach, so that the debris not cleaned by the cleaning brush can be washed away while cooling, and the cleaning effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping device of the present invention; Figure 4 It is a schematic diagram of the internal structure of the clamping device of the present invention; Figure 5 It is a schematic diagram of the internal structure of the rotating device of the present invention; Figure 6 It is a schematic diagram of the structure of the cleaning device of the present invention; Figure 7 It is a schematic diagram of the internal structure of the cleaning device of the present invention.

[0018] In the figure: 1. workbench; 2. hydraulic push rod; 3. clamping device; 31. support plate; 32. annular slide; 33. rotating device; 331. positioning plate; 332. rotating plate; 333. arc slide; 334. telescopic slot; 335. limit plate; 336. arc spring; 337. rotating column; 34. fixed frame; 35. connecting support rod; 36. limit slider; 37. fixed plate; 38. fixed slot; 39. telescopic push rod; 30. chuck; 4. support frame; 5. three-jaw chuck; 6. cleaning device; 61. cleaning pipe; 62. inclined nozzle; 63. fixing ring; 64. cleaning brush; 7. recovery tank; 8. recovery cavity; 9. cooling water pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 4 The present invention provides a technical solution: a broaching device for metal parts of electric tools, specifically comprising: A workbench 1, with hydraulic push rods 2 fixedly connected to both ends of the top of the workbench 1, and a clamping device 3 fixedly connected to one end of the hydraulic push rod 2; A support frame 4 is fixed at the center of the top of the workbench 1, a three-jaw chuck 5 is fixedly connected to the top of the support frame 4, and a cleaning device 6 is fixedly connected to the top of the support frame 4 on both sides of the three-jaw chuck 5; A recovery tank 7 is provided on the top of the workbench 1, a recovery cavity 8 is provided in the part of the workbench 1 below the recovery tank 7, and a filtering hole connected to the recovery cavity 8 is provided at the bottom of the recovery tank 7; A cooling water pump 9, wherein the water inlet of the cooling water pump 9 is connected to one side of the recovery cavity 8, and the water outlet of the cooling water pump 9 is connected to the cleaning device 6; The clamping device 3 comprises: A support plate 31, one side of the support plate 31 is provided with an annular groove 32, and one side of the support plate 31 is fixedly connected with a rotating device 33 at the center of the annular groove 32; A fixing frame 34 is arranged on one side of the support plate 31. A connecting rod 35 is fixedly connected to one side of the fixing frame 34 close to the support plate 31. One end of the connecting rod 35 away from the fixing frame 34 is fixedly connected to a limiting slider 36. The center position of one side of the fixing frame 34 is fixedly connected to the rotating device 33. A fixing plate 37, one side of which is fixedly connected to the fixing frame 34, and a fixing groove 38 is provided at the center of one side of the fixing plate 37 away from the fixing frame 34; The telescopic push rod 39 is fixed on one side of the fixing plate 37 close to the fixing groove 38 , and the bottom of the telescopic push rod 39 is fixedly connected with the clamping head 30 .

[0021] A broach is slidably connected inside the fixed groove 38 , and both ends of the broach inside the fixed groove 38 are provided with clamping grooves matched with the clamping head 30 .

[0022] The side of the support plate 31 away from the annular groove 32 is fixedly connected to the movable end of the hydraulic push rod 2, and multiple groups of connecting support rods 35 and fixed plates 37 are arranged and evenly distributed on the fixed frame 34. The limiting slider 36 is arranged inside the annular groove 32 and is slidably connected to the inner wall of the annular groove 32.

[0023] A clamping device 3 is provided. When in use, the broach can be placed in the fixed groove 38 on one side of the fixed disk 37. Since the fixed disk 37 is provided with multiple groups, multiple groups of broaches can be fixed on one side of the fixed frame 34. After the broach is placed in the fixed groove 38, the clamping head 30 can be driven by the telescopic push rod 39 to insert into the clamping groove at the end of the broach, so that the broach can be fixed in the fixed groove 38. When a group of broaches is broached, the fixed frame 34 can be rotated. The fixed frame 34 rotates under the support of the rotating device 33 and the limit slider 36, and drives the broach to rotate. When the broach is rotated to a suitable position, the liquid The push rod 2 drives the broach to pass through the workpiece and is fixed to the fixed plate 37 inserted at the other end. Different broaches can be freely replaced without the need to remove and reinstall them. The broach replacement operation is simple. A connecting support rod 35 and a limit slider 36 are provided. When the broach is subjected to tension, the tension of the broach is transmitted to the fixed plate 37 through the clamping head 30 and the telescopic push rod 39, and then transmitted to the connecting support rod 35 and the limit slider 36 through the fixed plate 37. The tension of the broach can be borne by the cooperation of the limit slider 36 and the annular limit groove 32, thereby preventing the tension of the broach from acting on the rotating device 33, thereby facilitating the protection of the rotating device.

[0024] Example 2: Please refer to Figure 1-Figure 5 The present invention provides a technical solution based on the first embodiment: the rotating device 33 includes a positioning plate 331, the inner wall of the positioning plate 331 is rotatably connected to the rotating plate 332 through a rotating bolt, the inner wall side of the positioning plate 331 is provided with an arc-shaped sliding groove 333, the side of the rotating plate 332 is provided with a telescopic groove 334 corresponding to the arc sliding groove 333, the inner wall of the telescopic groove 334 is slidably connected with a limiting plate 335, an arc spring 336 is arranged between the inner wall of the telescopic groove 334 and the limiting plate 335, one side of the rotating plate 332 is fixedly connected with a rotating column 337, one side of the positioning plate 331 is fixedly connected to the support plate 31, one end of the rotating column 337 passes through the positioning plate 331 and is fixedly connected to the fixing frame 34, both ends of the arc spring 336 are fixedly connected to the inner wall of the telescopic groove 334, the curvature of the limiting plate 335 is adapted to the curvature of the inner wall of the arc sliding groove 333, a plurality of arc sliding grooves 333 are arranged and correspond to the fixed plate 37 one by one, and a rotating device 33 is provided. When the broach needs to be replaced, the fixed frame 34 is rotated, and the fixed frame 34 drives the rotating column 337 to rotate, and the rotating column 337 drives the rotating disk 332 to rotate, and the rotating disk 332 drives the limiting disk 335 to rotate through the telescopic slot 334. While the limiting disk 335 rotates, it is squeezed by the inner wall of the arc-shaped slide slot 333 and moves toward the inside of the telescopic slot 334, and squeezes the arc spring 336. When the limiting disk 335 completely enters the telescopic slot 334, the rotating disk 332 continues to rotate. When the limit plate 335 moves to the position of the next set of arc-shaped slide grooves 333 driven by the telescopic grooves 334, the limit plate 335 can be extended into the arc-shaped slide grooves 333 under the thrust of the arc springs 336 to fix the limit plate 335, and the rotation and fixing operations are relatively convenient. Since the arc-shaped slide grooves 333 correspond to the fixed plate 37 one by one, the rotating plate 332 can be rotated to a suitable angle through the cooperation of the limit plate 335 and the arc-shaped slide grooves 333, so as to ensure the coaxiality.

[0025] Example 3: Please refer to Figure 1-Figure 7On the basis of the first and second embodiments, the present invention provides a technical solution: the cleaning device 6 includes a cleaning pipe 61, the cleaning pipe 61 is arranged in an annular shape, the inner side of the cleaning pipe 61 is connected with an inclined nozzle 62, one side of the cleaning pipe 61 is fixedly connected with an annular fixing ring 63, the inner wall of the annular fixing ring 63 is fixedly connected with a cleaning brush 64, one side of the cleaning pipe 61 is connected with the water outlet of the cooling water pump 9, one side of the annular fixing ring 63 is fixedly connected with the support frame 4 through a bracket, and a cleaning device 6 is provided, and the broach passes through the workpiece inside the three-jaw chuck 5 from the annular fixing ring 63 and The cleaning tube 61 passes through the inside of the cleaning tube 61, and the cleaning brush 64 inside the annular fixing ring 63 can be used to brush the broach to loosen and brush off the remaining debris on the broach. When the broach passes through the fixing ring 63 and enters the cleaning tube 61, the cooling water pump 9 sends cooling water into the cleaning tube 61 and sprays it on the broach through the inclined nozzle 62 on the inside of the cleaning tube 61. The inclined nozzle 62 is facing the tangential direction of the broach, so that the cooling water can be sprayed into the gap between the debris and the broach, which is convenient for washing away the debris not cleaned by the cleaning brush 64 while cooling, and the cleaning effect is better.

[0026] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A broaching device for metal parts of electric tools, specifically comprising: A workbench (1), wherein both ends of the top of the workbench (1) are fixedly connected to hydraulic push rods (2), and one end of the hydraulic push rod (2) is fixedly connected to a clamping device (3); A support frame (4), the support frame (4) being fixed at the center position of the top of the workbench (1), the top of the support frame (4) being fixedly connected to a three-jaw chuck (5), and the parts of the top of the support frame (4) located on both sides of the three-jaw chuck (5) being fixedly connected to cleaning devices (6); A recovery tank (7), the recovery tank (7) being disposed on the top of the workbench (1); a recovery cavity (8) being disposed in a portion of the workbench (1) below the recovery tank (7); and a filtering hole communicating with the recovery cavity (8) being disposed at the bottom of the recovery tank (7); A cooling water pump (9), wherein a water inlet of the cooling water pump (9) is connected to one side of the recovery cavity (8), and a water outlet of the cooling water pump (9) is connected to the cleaning device (6); The broaching device for metal parts of electric tools is characterized in that the clamping device (3) comprises: A support plate (31), wherein an annular slide groove (32) is formed on one side of the support plate (31), and a rotating device (33) is fixedly connected to one side of the support plate (31) at the center of the annular slide groove (32); A fixing frame (34), the fixing frame (34) being arranged on one side of the support plate (31), a connecting rod (35) being fixedly connected to a side of the fixing frame (34) close to the support plate (31), an end of the connecting rod (35) away from the fixing frame (34) being fixedly connected to a limiting slider (36), and a central position of one side of the fixing frame (34) being fixedly connected to the rotating device (33); A fixing plate (37), one side of the fixing plate (37) being fixedly connected to the fixing frame (34), and a fixing groove (38) being provided at a central position of a side of the fixing plate (37) away from the fixing frame (34); A telescopic push rod (39) is fixed to a side of the fixing plate (37) close to the fixing groove (38), and a clamping head (30) is fixedly connected to the bottom of the telescopic push rod (39).

2. The broaching device for metal parts of electric tools according to claim 1, characterized in that: A broach is slidably connected inside the fixed groove (38), and both ends of the broach inside the fixed groove (38) are provided with clamping grooves that match the clamping head (30).

3. The broaching device for metal parts of electric tools according to claim 1, characterized in that: The side of the support plate (31) away from the annular slide groove (32) is fixedly connected to the movable end of the hydraulic push rod (2), the connecting support rod (35) and the fixed plate (37) are provided in multiple groups and are evenly distributed on the fixed frame (34), and the limit slider (36) is arranged inside the annular slide groove (32) and is slidably connected to the inner wall of the annular slide groove (32).

4. The broaching device for metal parts of electric tools according to claim 1, characterized in that: The rotating device (33) comprises a positioning plate (331), the inner wall of the positioning plate (331) being rotatably connected to a rotating plate (332) via a rotating bolt, an arc-shaped sliding groove (333) being provided on the side of the inner wall of the positioning plate (331), a telescopic groove (334) corresponding to the arc-shaped sliding groove (333) being provided on the side of the rotating plate (332), the inner wall of the telescopic groove (334) being slidably connected to a limiting plate (335), an arc-shaped spring (336) being provided between the inner wall of the telescopic groove (334) and the limiting plate (335), and a rotating column (337) being fixedly connected to one side of the rotating plate (332).

5. The broaching device for metal parts of electric tools according to claim 4, characterized in that: One side of the positioning plate (331) is fixedly connected to the support plate (31), and one end of the rotating column (337) passes through the positioning plate (331) and is fixedly connected to the fixing frame (34).

6. The broaching device for metal parts of electric tools according to claim 4, characterized in that: Both ends of the arc spring (336) are fixedly connected to the inner wall of the telescopic slot (334); the curvature of the limit plate (335) matches the curvature of the inner wall of the arc sliding slot (333); and a plurality of groups of arc sliding slots (333) are provided and correspond one to one with the fixed plates (37).

7. The broaching device for metal parts of electric tools according to claim 1, characterized in that: The cleaning device (6) comprises a cleaning tube (61), the cleaning tube (61) being arranged in an annular shape, the inner side of the cleaning tube (61) being connected to an inclined nozzle (62), one side of the cleaning tube (61) being fixedly connected to an annular fixing ring (63), and the inner wall of the annular fixing ring (63) being fixedly connected to a cleaning brush (64).

8. The broaching device for metal parts of electric tools according to claim 7, characterized in that: One side of the cleaning pipe (61) is in communication with the water outlet of the cooling water pump (9), and one side of the annular fixing ring (63) is fixedly connected to the support frame (4) via a bracket.

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