Fixing device for maintenance of water pump of railway locomotive

Abstract

The utility model discloses a fixing device for maintenance of a water pump of a railway locomotive. The fixing device comprises a fixing unit, a rotating unit, a connecting unit and a locking unit, the fixing unit comprises a base, a cavity penetrating through the two ends is formed in the base, and one end of the cavity is blocked through a dustproof cover; the rotating unit is arranged in the cavity of the base and rotates in the cavity along the central axis of the cavity. The connecting unit is arranged at the end part of the rotating unit and synchronously rotates along with the rotating unit, and a plurality of angle positioning pin holes are formed in the connecting unit; the locking unit is arranged between the fixing unit and the angle positioning pin hole and comprises a fixing shell and a plug pin, the plug pin stretches out and draws back along the fixing shell, and one end of the plug pin is arranged in the angle positioning pin hole to lock the connecting unit. The connecting unit is used for being connected with the water pump, when a certain angle is needed, the locking unit relieves locking of the connecting unit, locking is conducted again after the connecting unit is turned over, and therefore the angle of the water pump can be conveniently and rapidly fixed and adjusted.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of water pump maintenance technology, and more specifically, relate to a fixed device for the maintenance of railway locomotive water pumps. Background Technology

[0002] The cooling water pump in a diesel locomotive is a core component ensuring the normal operation of the diesel engine. It cools the cylinders and pressurized air through a forced-circulation water system. Due to prolonged operation under high temperature, high pressure, and high speed conditions, the water pump is prone to problems such as mechanical seal failure, water leakage, and impeller wear, directly affecting the locomotive's operational safety and efficiency. During maintenance, the nearly 100-pound water pump body needs to be disassembled, vulnerable parts replaced, and rotated at multiple angles to complete precise repairs of its internal components. However, the water pump's large size and weight, coupled with the challenges of manual rotation (limited angles, laborious operation, and poor stability), can easily lead to damage to parts or safety hazards for personnel.

[0003] Currently, water pump maintenance commonly employs a combination of simple mounting brackets and manual tilting: the pump is fixed to a simple bracket by welding or bolts, and multiple operators manually adjust the angle to complete the assembly and disassembly. Some improved solutions introduce basic tilting devices, such as using hydraulic cylinders to drive an L-shaped tilting body to achieve unidirectional tilting of the pump from vertical to horizontal, or using slide rails and lead screw structures to adjust the position of the clamping plate to accommodate different pump models. Furthermore, some devices use springs, hydraulic jacks, and other buffer structures to reduce the impact of vibration on the stability of the mounting.

[0004] This method is not only primitive, inefficient, cumbersome, and monotonous, but also poses certain safety risks. Therefore, a railway locomotive water pump maintenance and fixing device is needed to replace the simple seat fixing method for water pump fixing, and the angle of maintenance can be adjusted according to needs to improve the portability and efficiency of water pump maintenance. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a railway locomotive water pump maintenance and fixing device. The fixing device is installed on the maintenance work platform through a fixing unit and connected to the water pump using a connecting unit. When a certain angle is required, the locking unit releases the locking of the connecting unit, and the connecting unit is flipped over to lock it again, thereby achieving convenient and quick angle fixing and adjustment of the water pump.

[0006] To achieve the above objectives, this utility model provides a railway locomotive water pump maintenance and fixing device, including a fixing unit, a rotating unit, a connecting unit, and a locking unit.

[0007] The fixing unit includes a base, and the base has a cavity extending through both ends, one end of which is sealed by a dust cover;

[0008] The rotating unit is located in the cavity of the base and rotates within the cavity along its central axis.

[0009] The connecting unit is located at the end of the rotating unit and rotates synchronously with it. The connecting unit is provided with multiple angle positioning pin holes.

[0010] The locking unit is located between the fixing unit and the angle positioning pin hole, and includes a fixing shell and a pin. The pin extends and retracts along the fixing shell, and one end of it is located in the angle positioning pin hole to lock the connecting unit.

[0011] Furthermore, the cavity is a cylindrical cavity, and two bearing grooves are respectively opened on the inner walls of both ends of the cylindrical cavity.

[0012] Furthermore, the rotating unit includes a rotating shaft disposed within a cylindrical cavity of the rotating shaft, and a first bearing and a second bearing respectively disposed at both ends of the rotating shaft;

[0013] The first bearing is sleeved on the shaft at one end near the dust cover, and is located in the bearing groove on the base at one end near the dust cover.

[0014] The second bearing is fitted onto the end of the shaft away from the dust cover, and is located in the bearing groove on the base away from the dust cover.

[0015] Furthermore, the end of the rotating shaft near the dust cover is also provided with an annular retaining spring groove, and a retaining spring is provided in the retaining spring groove. The retaining spring groove is located between the first bearing and the dust cover.

[0016] The outer diameter of the snap ring is larger than the radius of the rotating shaft, protrudes outside the snap ring groove and contacts the first bearing, thereby limiting the first bearing;

[0017] The end of the rotating shaft away from the dust cover is also provided with a circular limiting block, which contacts the second bearing and limits the second bearing.

[0018] Furthermore, a bearing spacer is provided between the first bearing and the dust cover. One end of the bearing spacer abuts against the dust cover, and the other end abuts against the outer ring of the first bearing. The dust cover axially positions the first bearing in the shaft hole groove of the base.

[0019] Furthermore, the connecting unit includes an angle rotary disk and a flange disposed on one side of the angle rotary disk;

[0020] The angle rotating disk is vertically arranged, and its center on the back is fixedly connected to the upper limit block of the rotating shaft, rotating with the rotating shaft along its circumference;

[0021] The flange is arranged horizontally and fixedly connected to one side of the front of the angle rotating disk, with the flange and the angle rotating disk forming a right angle.

[0022] Furthermore, the angle rotating disk is provided with a plurality of angle positioning pin holes equidistantly along the circumference with the axis of the rotating shaft as the center;

[0023] The flange has multiple flange through holes equidistantly arranged around its center along the circumference.

[0024] Furthermore, the locking unit includes a fixing shell disposed on the base and a pin disposed in the fixing shell;

[0025] The fixed shell has a through hole along the axial direction of the rotating shaft, and a sliding groove is provided at the end away from the angle rotating disk. The sliding groove is also provided along the axial direction of the rotating shaft and communicates with the through hole of the rotating shaft.

[0026] The pin is located in the through hole of the fixed shell, and the end of the pin near the slide groove is provided with handles on both sides. The handles are located in the slide groove of the fixed shell and move along the slide groove.

[0027] Furthermore, a reset plate is also provided inside the fixed housing. A through hole is provided in the center of the pin along its radial direction, and a washer is fitted between the through hole on the pin and the reset plate on the fixed housing. A washer pin is provided in the through hole on the pin to limit the position of the washer.

[0028] Furthermore, a spring is fitted onto the pin, and the spring is located between the washer and the reset plate of the fixed shell.

[0029] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0030] 1. The water pump maintenance and fixing device of this utility model is installed on the maintenance work platform through the fixing unit and connected to the water pump through the connecting unit. When a certain angle is required, the locking unit releases the locking of the connecting unit, and the connecting unit is flipped over and locked again, thereby realizing the convenient and quick angle fixing and adjustment of the water pump.

[0031] 2. The water pump maintenance and fixing device of this utility model, through the setting of dust cover, bearing spacer ring, snap ring groove, snap ring and limiting block, axially limits the rotating shaft, the first bearing and the second bearing in the base. Under the action of the first bearing and the second bearing at both ends, the rotating shaft can rotate arbitrarily in the circumferential direction in the base.

[0032] 3. The water pump maintenance and fixing device of this utility model has multiple flange through holes of different sizes to accommodate water pumps of various specifications.

[0033] 4. The water pump maintenance and fixing device of this utility model allows for easy adjustment of the water pump angle. When it is necessary to adjust the angle of the water pump, pull the pin to make it exit from the angle positioning pin hole, thereby unlocking the connecting unit. At this time, the spring is in a compressed state. Then, rotate the angle rotating disk to the required angle and align the angle positioning pin hole with the pin. Release the pin, and under the elastic force of the spring, drive the pin to automatically insert into the angle positioning pin hole, and lock it again. The operation is simple and convenient. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0035] Figure 2 This is a schematic diagram of the fixing unit structure of a railway locomotive water pump maintenance fixing device according to the present invention;

[0036] Figure 3 This is a first-view structural diagram of the rotating unit of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0037] Figure 4 This is a second-view structural diagram of the rotating unit of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0038] Figure 5 This is a schematic diagram of the rotating shaft structure of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0039] Figure 6 This is a schematic diagram of the connection unit structure of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0040] Figure 7 This is a schematic diagram of the locking unit structure of a railway locomotive water pump maintenance and fixing device according to the present invention;

[0041] Figure 8 This is a schematic diagram of the internal structure of the locking unit of a railway locomotive water pump maintenance and fixing device according to the present invention.

[0042] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-fixing unit, 101-base, 102-dust cover, 103-fixing hole, 2-rotating unit, 201-rotating shaft, 202-first bearing, 203-second bearing, 204-circlip groove, 205-circlip, 206-bearing spacer, 3-connecting unit, 301-angle rotating disk, 302-flange, 303-angle positioning pin hole, 304-flange through hole, 305-reinforcing rib, 4-locking unit, 401-fixed shell, 402-pin, 403-spring, 404-washer, 405-washer pin. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0044] like Figure 1 As shown in the figure, this utility model provides a maintenance and fixing device for a railway locomotive water pump, including a fixing unit 1, a rotating unit 2 disposed on the fixing unit 1, a connecting unit 3 disposed on the rotating unit 2, and a locking unit 4 disposed on the fixing unit 1. The water pump is connected to this fixing device via the connecting unit 3, which is fixedly connected to one end of the rotating unit 2. The rotating unit 2 is rotatably connected to the fixing unit 1, causing the connecting unit 3 to rotate to adjust the angle of the water pump. The locking unit 4 is used to lock the connecting unit 3; after the water pump angle is adjusted to the required maintenance position, it is locked by the locking unit 4. The fixing device is installed on a maintenance work platform via the fixing unit 1, and the connecting unit 3 is connected to the water pump. When a certain angle is required, the locking unit 4 releases the lock on the connecting unit 3, flips the connecting unit 3, and locks it again, thereby achieving convenient and quick angle fixing and adjustment of the water pump.

[0045] like Figure 2 As shown, the fixing unit 1 includes a base 101, a dust cover 102 located at one end of the base 101, and a fixing hole 103 located at the bottom of the base 101. The base 101 has a cylindrical cavity penetrating both ends, with two bearing grooves on the inner walls of each end. The dust cover 102 is located at one end of the cylindrical cavity and seals it to prevent dust accumulation. The dust cover 102 is detachably connected to the base 101, preferably by bolts. Specifically, the base 101 has multiple threaded holes near the dust cover 102, and the dust cover 102 has multiple through holes corresponding to these threaded holes. Bolts and washers connect the two. Two mounting ears extend from the bottom of the base 101 to both sides, each with multiple through holes. Bolts are used to fix the base 101 to the maintenance platform through these through holes.

[0046] like Figure 3-5As shown, the rotating unit 2 is disposed within the cylindrical cavity of the base 101, and includes a rotating shaft 201 and a first bearing 202 and a second bearing 203 respectively disposed at both ends of the rotating shaft 201. The first bearing 202 is fitted onto the end of the rotating shaft 201 near the dust cover 102 and is disposed within a bearing groove on the base 101 near the dust cover 102. The second bearing 203 is fitted onto the end of the rotating shaft 201 away from the dust cover 102 and is disposed within a bearing groove on the base 101 away from the dust cover 102.

[0047] The rotating shaft 201 has an annular retaining ring groove 204 near the dust cover 102, and a retaining ring 205 is provided in the retaining ring groove 204. The retaining ring groove 204 is located between the first bearing 202 and the dust cover 102. The outer diameter of the retaining ring 205 is larger than the radius of the rotating shaft 201, protrudes out of the retaining ring groove 204 and contacts the first bearing 202, thus limiting the first bearing 202. The rotating shaft 201 also has a circular limiting block at the end away from the dust cover 102. The limiting block contacts the second bearing 203, thus limiting the second bearing 203.

[0048] A bearing spacer 206 is provided between the first bearing 202 and the dust cover 102. One end of the bearing spacer 206 abuts against the dust cover 102, and the other end abuts against the outer ring of the first bearing 202. The dust cover 102 axially positions the first bearing 202 in the shaft hole groove of the base 101.

[0049] It is understood that after the dust cover 102 and bearing spacer 206 axially limit the first bearing 202, the axial limit of the rotating shaft 201 is achieved through the cooperation of the snap ring 205 and snap ring groove 204. At this time, the limiting block at the end of the rotating shaft 201 away from the dust cover 102 axially limits the second bearing 203. Through the arrangement of the dust cover 102, bearing spacer 206, snap ring groove 204, snap ring 205, and limiting block, the rotating shaft 201, the first bearing 202, and the second bearing 203 are axially limited in the base 101. Under the action of the first bearing 202 and the second bearing 203 at both ends, the rotating shaft 201 can rotate arbitrarily in the circumferential direction in the base 101.

[0050] like Figure 6As shown, the connecting unit 3 includes an angle rotating disk 301 and a flange 302 disposed on one side of the angle rotating disk 301. The angle rotating disk 301 is vertically oriented, with its back center fixedly connected to the upper limit block of the rotating shaft 201, rotating circumferentially with the rotating shaft 201. The flange 302 is horizontally oriented and fixedly connected to one side of the front of the angle rotating disk 301, forming a right angle with the angle rotating disk 301. The angle rotating disk 301 has multiple angle positioning pin holes 303 equidistantly arranged circumferentially around the axis of the rotating shaft 201. The flange 302 has multiple flange through holes 304 equidistantly arranged circumferentially around its center, connecting to the flange of the water pump through these flange through holes 304, thus fixing the water pump to the connecting unit 3.

[0051] Understandably, in order to make flange 302 adaptable to various pumps of different specifications, the flange through hole 304 provided on it can be provided in multiple turns and in different sizes to accommodate pump flanges of different sizes.

[0052] In a preferred embodiment of the present invention, in order to enhance the load-bearing capacity of the connecting unit 3, a plurality of reinforcing ribs 305 are provided at the connection between the flange 302 and the angle rotating disk 301, thereby enhancing the stability of the connection between the two.

[0053] like Figure 7 , 8 As shown, the locking unit 4 includes a fixed housing 401 mounted on the base 101 and a pin 402 disposed within the fixed housing 401. The fixed housing 401 has a through hole along the axial direction of the rotating shaft 201, and a groove at its end away from the angle rotating disk 301. This groove is also along the axial direction of the rotating shaft 201 and communicates with the through hole. The pin 402 is disposed in the through hole of the fixed housing 401, and handles are provided on both sides at the end of the pin 402 near the groove. These handles are located within the groove of the fixed housing 401 and move along the groove. One end of the pin 402 extends beyond the base 101 until it reaches the angle positioning pin hole 303, thereby locking the connecting unit 3. The fixed housing 401 also includes a reset plate. The pin 402 has a through hole along its radial direction in the middle, and a washer 404 is fitted between the through hole on the pin 402 and the reset plate on the fixed housing 401. A washer pin 405 is provided inside the through hole on the pin 402 to limit the position of the washer 404. A spring 403 is also fitted onto the pin 402, and the spring 403 is located between the washer 404 and the reset plate of the fixed housing 401.

[0054] Understandably, when it is necessary to adjust the angle of the water pump, pull the pin 402 to disengage it from the angle positioning pin hole 303, thereby unlocking the connecting unit 3. At this time, the spring 403 is in a compressed state. Then, rotate the angle rotating disk 301 to the desired angle and align the angle positioning pin hole 303 with the pin 402. Release the pin 402, and under the elastic force of the spring 403, drive the pin 402 to automatically insert into the angle positioning pin hole 303 and lock it again. The operation is simple and convenient.

[0055] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A maintenance and fixing device for a railway locomotive water pump, characterized in that, It includes a fixing unit (1), a rotating unit (2), a connecting unit (3), and a locking unit (4); The fixing unit (1) includes a base (101), and the base (101) has a cavity that extends through both ends, one end of which is sealed by a dust cover (102); The rotating unit (2) is located in the cavity of the base (101) and rotates in the cavity along its central axis. The connecting unit (3) is located at the end of the rotating unit (2) and rotates synchronously with it. The connecting unit (3) is provided with a plurality of angle positioning pin holes (303). The locking unit (4) is located between the fixing unit (1) and the angle positioning pin hole (303), and includes a fixing shell (401) and a pin (402). The pin (402) extends and retracts along the fixing shell (401), and one end of it is located in the angle positioning pin hole (303) to lock the connecting unit (3).

2. The railway locomotive water pump maintenance and fixing device according to claim 1, characterized in that, The cavity is a cylindrical cavity, and two bearing grooves are respectively opened on the inner walls of both ends of the cylindrical cavity.

3. The railway locomotive water pump maintenance and fixing device according to claim 2, characterized in that, The rotating unit (2) includes a rotating shaft (201) disposed in a cylindrical cavity of a rotating shaft (201) and a first bearing (202) and a second bearing (203) respectively disposed at both ends of the rotating shaft (201); The first bearing (202) is sleeved on the shaft (201) at one end near the dust cover (102), and is located in the bearing groove on the base (101) at one end near the dust cover (102); The second bearing (203) is sleeved on the shaft (201) at the end away from the dust cover (102), and is located in the bearing groove at the end of the base (101) away from the dust cover (102).

4. The railway locomotive water pump maintenance and fixing device according to claim 3, characterized in that, The rotating shaft (201) has an annular retaining ring groove (204) at one end near the dust cover (102), and a retaining ring (205) is provided in the retaining ring groove (204). The retaining ring groove (204) is located between the first bearing (202) and the dust cover (102). The outer diameter of the snap ring (205) is larger than the radius of the rotating shaft (201), protrudes outside the snap ring groove (204) and contacts the first bearing (202), thus limiting the first bearing (202); The end of the rotating shaft (201) away from the dust cover (102) is also provided with a circular limiting block, which contacts the second bearing (203) and limits the second bearing (203).

5. A railway locomotive water pump maintenance and fixing device according to claim 4, characterized in that, A bearing spacer (206) is provided between the first bearing (202) and the dust cover (102). One end of the bearing spacer (206) abuts against the dust cover (102), and the other end abuts against the outer ring of the first bearing (202). The first bearing (202) is axially positioned in the shaft hole groove of the base (101) by the dust cover (102).

6. A railway locomotive water pump maintenance and fixing device according to any one of claims 3-5, characterized in that, The connecting unit (3) includes an angle rotary disk (301) and a flange (302) disposed on one side of the angle rotary disk (301); The angle rotating disk (301) is vertically arranged, and the center of its back is fixedly connected to the upper limit block of the rotating shaft (201), and rotates along its circumference with the rotating shaft (201); The flange (302) is arranged horizontally and fixedly connected to one side of the front of the angle rotating disk (301). The flange (302) and the angle rotating disk (301) are at right angles.

7. A railway locomotive water pump maintenance and fixing device according to claim 6, characterized in that, The angle rotating disk (301) is provided with a plurality of angle positioning pin holes (303) at equal intervals along the circumference with the axis of the rotating shaft (201) as the center; The flange (302) has multiple flange through holes (304) equidistantly arranged around its center in the circumferential direction.

8. A railway locomotive water pump maintenance and fixing device according to any one of claims 3-5, characterized in that, The locking unit (4) includes a fixing shell (401) disposed on the base (101) and a pin (402) disposed in the fixing shell (401); The fixed shell (401) has a through hole along the axial direction of the rotating shaft (201), and a sliding groove is provided at the end away from the angle rotating disk (301). The sliding groove is also arranged along the axial direction of the rotating shaft (201) and communicates with the through hole of the rotating shaft (201). The pin (402) is located in the through hole of the fixed shell (401). The end of the pin (402) near the slide groove is provided with handles on both sides. The handles are located in the slide groove of the fixed shell (401) and move along the slide groove.

9. A railway locomotive water pump maintenance and fixing device according to claim 8, characterized in that, The fixed housing (401) is also provided with a reset plate. The pin (402) has a through hole in the middle along its radial direction. A washer (404) is also sleeved between the through hole on the pin (402) and the reset plate on the fixed housing (401). A washer pin (405) is provided in the through hole on the pin (402) to limit the washer (404).

10. A railway locomotive water pump maintenance and fixing device according to claim 9, characterized in that, A spring (403) is also fitted on the pin (402), and the spring (403) is located between the washer (404) and the reset plate of the fixed shell (401).

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