Large and medium-sized water pump impeller dismounting device

Abstract

The utility model discloses a large and medium-sized water pump impeller dismounting and mounting device, and belongs to the technical field of water pump impeller dismounting and mounting. Comprising a base; the headstock is arranged at the right end of the base, and a hydraulic cylinder assembly is mounted on the headstock; the supporting box is arranged at the left end of the base; the workbench is movably arranged on the base, wheels and a driving assembly are arranged at the bottom of the workbench, an adjusting bracket is arranged on the right side of the workbench, a workbench box is arranged on the left side of the workbench, a U-shaped groove is formed in the middle of the upper portion of the workbench box, through holes with sleeves are formed in the left side and the right side of the workbench box, and locking devices are installed at the through holes. The two force bearing guide rods movably penetrate through the sleeves in the through holes in the left side and the right side of the workbench box body respectively, the locker is clamped on the force bearing guide rods to fix the workbench, and the two ends of the force bearing guide rods are installed on the headstock and the supporting box respectively. According to the utility model, the automation of the dismounting process is realized, the safety problem of operators is solved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly of water pump impellers, in particular to a disassembly and assembly device of large and medium-sized water pump impellers. Background Art

[0002] During the use of the water pump in the hydraulic pump station, its impeller and water pump shaft need to be replaced or disassembled during the maintenance process. Due to the large size and power of large and medium-sized water pumps, the impeller is very tight, and the disassembly and assembly of the water pump impeller and shaft is usually complicated and difficult, requiring special tools and equipment to complete. At present, the disassembly and assembly of water pump impellers and shafts in the market is usually manually dismantled with the help of simple tools, such as hitting with a sledgehammer and a copper rod or vertical pierping by multiple people. This disassembly and assembly is easy to cause damage to the impeller or shaft, and it is inefficient, complicated to operate, labor-intensive and unsafe. Utility Model Content

[0003] The utility model aims to provide a large and medium-sized water pump impeller disassembly and assembly device, aiming to improve the automation and efficiency of black fungus racking, so as to solve the problems raised in the above-mentioned background technology.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A large and medium-sized water pump impeller disassembly and assembly device, comprising:

[0006] Base 1;

[0007] A bedside box 2 is arranged at the right end of the base 1, and a hydraulic cylinder assembly is installed on the bedside box 2;

[0008] A support box 3 is arranged at the left end of the base 1;

[0009] A workbench 5 is movably arranged on the base 1. Wheels and a driving assembly are arranged at the bottom of the workbench 5, so that the workbench 5 can move left and right on the base 1. An adjustment bracket 4 is arranged on the right side of the workbench 5. A workbench box is arranged on the left side of the workbench 5. A U-shaped groove is arranged in the middle of the upper part of the workbench box. Through holes with sleeves are arranged on the left and right sides of the workbench box, and lockers 9 are installed at the through holes.

[0010] There are two load-bearing guide rods 7, which are movable through the sleeves in the through holes on the left and right sides of the workbench box. The locker 9 fixes the workbench 5 by clamping on the load-bearing guide rods 7. The two ends of the load-bearing guide rods 7 are respectively installed on the headboard box 2 and the support box 3.

[0011] The hydraulic cylinder assembly includes a jack 14, two hydraulic joints on the jack, a hydraulic solenoid valve and a jack rod displacement sensor. The jack 14 is installed in the middle of the left side of the headboard box 2. The two hydraulic joints are connected to the external hydraulic station 11 to provide working pressure for the jack; the hydraulic solenoid valve is controlled by the control system of the control console 13 and is a hydraulic switch for the extension and retraction of the jack rod; the displacement sensor senses the extension length of the jack rod in real time.

[0012] The locking device 9 is composed of a pair of locking plates and an electric push rod. The top of the locking plate is an arc-shaped structure. The root of the locking plate is provided with fan teeth, and the root of the locking plate is hinged to the workbench box through a pin shaft. The fan teeth at the root of the pair of locking plates are meshed with each other. The electric push rod is arranged on the workbench box. The shaft head of the electric push rod is hinged to one of the locking plates. The electric push rod pushes and pulls one of the locking plates, and the other locking plate opens and closes symmetrically. When the pair of locking plates are closed, the arc-shaped structure of the locking plate is clamped in the annular groove provided on the load-bearing guide rod 7, thereby completing the locking of the workbench.

[0013] The workbench 5 is provided with a rotating shaft installed along the front-to-back direction through bearings on the left and right sides of the bottom thereof, and walking wheels are arranged at both ends of the rotating shaft. The driving assembly comprises a gear a arranged on the left rotating shaft, a reduction motor installed on the workbench 5, and a gear b arranged on the output shaft of the reduction motor. The gear b is meshed with the gear a, and the reduction motor drives the left rotating shaft to rotate so that the workbench 5 moves left and right on the base 1.

[0014] The adjustment bracket 4 includes a base frame, and two alignment wheels are movably arranged on the front and rear sides of the upper part of the base frame through a bracket, a nut is arranged at the bottom of the bracket, a screw rod is arranged on the inner side of the base frame along the front and rear direction, and external threads with opposite rotation directions are arranged at both ends of the screw rod, and the brackets of the two alignment wheels are respectively threadedly assembled on the external threads at both ends of the screw rod, and both ends of the screw rod extend out of the base frame, and a handwheel is arranged on the end of the screw rod.

[0015] It also includes a centering sleeve, which is placed in a U-shaped groove on the upper part of the workbench box to ensure that the axis of the impeller shaft and the axis of the output shaft of the jack 14 are on the same straight line.

[0016] A displacement sensor is installed on the workbench, and workbench limit switches are arranged on the left and right sides of the base.

[0017] The workbench 5 further comprises a cantilever crane 12 , which is installed on the rear side of the workbench 5 .

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] The utility model improves the disassembly and assembly efficiency: through the use of the hydraulic cylinder assembly, especially the use of the jack, the impeller and the impeller shaft can be disassembled and installed more quickly, which significantly improves the work efficiency.

[0020] The utility model is easy to operate: the control panel control system makes the control of the hydraulic solenoid valve easier, reducing the requirement for operator skills. The use of the jack rod displacement sensor can sense the extension length of the jack rod in real time, ensuring the accuracy and safety of the impeller disassembly and assembly process.

[0021] The utility model has high structural stability: the stability of the workbench is enhanced by the load-bearing guide rod and the locker, thereby ensuring the reliability during the disassembly and assembly of the impeller.

[0022] The utility model has enhanced flexibility: the wheels and driving assembly design at the bottom of the workbench enable the workbench to move left and right on the base, thereby improving the flexibility and adaptability of the device.

[0023] The utility model is easy to adjust and position: the design of the adjustment bracket and the alignment wheel facilitates the precise positioning and adjustment of the impeller, ensuring the alignment of the impeller and the jack. The use of the centering sleeve ensures that the impeller shaft is aligned with the axis of the jack output shaft, avoiding damage caused by misalignment.

[0024] The utility model has improved automation level: the displacement sensor on the workbench and the limit switch on the base further improve the automation level of the disassembly and assembly process and reduce human errors.

[0025] The cantilever crane provided in the utility model provides additional convenience for the transportation and installation of the impeller, thereby enhancing the practicability of the device.

[0026] The utility model has enhanced safety: through the use of various sensors and limit switches, the safety of the device during operation is significantly improved.

[0027] The utility model has strong adaptability: it is suitable for disassembly and assembly of large and medium-sized water pump impellers of various models and sizes, and has good versatility and adaptability.

[0028] In summary, the utility model realizes the automation of the disassembly process, saves time and labor, solves the safety problem of operators, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the front view of the utility model;

[0030] Figure 2 It is a top view of the utility model;

[0031] Figure 3 It is a side view of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the adjustment bracket part of the utility model;

[0033] Figure 5 This is the signal principle diagram of the control system of the control console of the utility model;

[0034] As shown in the figure: base 1; headboard box 2; support box 3; adjustment bracket 4; workbench 5; drive assembly 6; load-bearing guide rod 7; impeller 8; locker 9; drag chain 10; hydraulic station 11; cantilever crane 12; control console 13; jack 14. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0038] Example 1

[0039] like Figure 1-5 This embodiment provides a large and medium-sized water pump impeller disassembly and assembly device, including:

[0040] Base 1;

[0041] A bedside box 2 is arranged at the right end of the base 1, and a hydraulic cylinder assembly is installed on the bedside box 2;

[0042] A support box 3 is arranged at the left end of the base 1;

[0043] A workbench 5 is movably arranged on the base 1. A wheel and a driving assembly are arranged at the bottom of the workbench 5, so that the workbench 5 can move left and right on the base 1. An adjustment bracket 4 is arranged on the right side of the workbench 5. A workbench box is arranged on the left side of the workbench 5. A U-shaped groove is arranged in the middle of the upper part of the workbench box. The U-shaped groove is used to place the impeller shaft. Through holes with sleeves are arranged on the left and right sides of the workbench box, and lockers 9 are installed at the through holes.

[0044] There are two load-bearing guide rods 7, which are respectively movable through the sleeves in the through holes on the left and right sides of the workbench box. The locker 9 fixes the workbench 5 by clamping on the load-bearing guide rods 7. The two ends of the load-bearing guide rods 7 are respectively installed on the headstock box 2 and the support box 3. The workbench 5 is guided by the load-bearing guide rods 7 when moving forward and backward, and bears the main pulling force during the disassembly and assembly of the impeller.

[0045] The hydraulic cylinder assembly includes a 400T jack 14, two hydraulic joints on the jack, a hydraulic solenoid valve and a jack rod displacement sensor. The jack 14 is installed in the middle of the left side of the headboard box 2. The thrust generated by the jack pushes the impeller shaft mounted on the workbench backward; the two hydraulic joints are connected to the external hydraulic station 11 to provide working pressure for the jack; the hydraulic solenoid valve is controlled by the control system of the control console 13 and is a hydraulic switch for the extension and retraction of the jack rod; the displacement sensor senses the extension length of the jack rod in real time.

[0046] The locking device 9 is composed of a pair of locking plates and an electric push rod. The top of the locking plate is an arc-shaped structure. The root of the locking plate is provided with fan teeth, and the root of the locking plate is hinged to the workbench box through a pin shaft. The fan teeth at the root of the pair of locking plates are meshed with each other. The electric push rod is arranged on the workbench box. The shaft head of the electric push rod is hinged to one of the locking plates. The electric push rod pushes and pulls one of the locking plates, and the other locking plate opens and closes symmetrically. When the pair of locking plates are closed, the arc-shaped structure of the locking plate is clamped in the annular groove provided on the load-bearing guide rod 7, thereby completing the locking of the workbench.

[0047] The workbench 5 is provided with a rotating shaft installed along the front-to-back direction through bearings on the left and right sides of the bottom thereof, and walking wheels are arranged at both ends of the rotating shaft. The driving assembly comprises a gear a arranged on the left rotating shaft, a reduction motor installed on the workbench 5, and a gear b arranged on the output shaft of the reduction motor. The gear b is meshed with the gear a, and the reduction motor drives the left rotating shaft to rotate so that the workbench 5 moves left and right on the base 1.

[0048] like Figure 4As shown, the adjustment bracket 4 includes a base frame, and two alignment wheels are movably arranged on the front and rear sides of the upper part of the base frame through a bracket, and the impeller 8 is placed on the two alignment wheels. A nut is arranged at the bottom of the bracket, and a screw rod is arranged on the inner side of the base frame along the front and rear direction. The two ends of the screw rod are arranged with external threads with opposite rotation directions, and the brackets of the two alignment wheels are respectively threadedly assembled on the external threads at the two ends of the screw rod. When the screw rod rotates, the two alignment wheels assembled on the two sections of external threads with opposite rotation directions will approach each other or move away from each other. The two ends of the screw rod extend out of the base frame and are provided with hand wheels on the ends. Shaking the hand wheels can change the opening and closing degree of the alignment wheels. In order to improve the alignment efficiency and reduce the labor intensity, a hand wheel can also be arranged at one end of the screw rod, and a servo motor can be arranged at the other end to drive the screw rod to rotate, so that the two alignment wheels on the screw rod that are threadedly assembled through the bracket are approached or moved away from each other, so as to adjust the height of the impeller and align the impeller shaft with the output shaft of the hydraulic cylinder.

[0049] The adjustment bracket 4 has two functions. First, when removing the impeller, by changing the opening and closing degree of the alignment wheel and adapting to impellers of different diameters, it can be used as a load-bearing mechanism when the impeller is disengaged from the impeller shaft. Second, when loading the impeller, by changing the opening and closing degree of the alignment wheel and adapting to impellers of different diameters, the impeller can be lifted up so that the central axis hole of the impeller is coaxial with the centering sleeve and the jack rod.

[0050] It also includes a centering sleeve, which is placed in the U-shaped groove on the upper part of the workbench box to ensure that the axis of the impeller shaft is in the same straight line with the axis of the output shaft of the jack 14. The centering sleeve has multiple models and is installed on the workbench as needed. The inner diameters of different models of centering sleeves are different to meet the loading and unloading requirements of impeller shafts with different diameters.

[0051] The workbench 5 is equipped with a displacement sensor, which enables the workbench 5 to know its current position in real time, thereby automating the disassembly process and improving the safety of operators and work efficiency.

[0052] The base is provided with workbench limit switches on the left and right sides to ensure that the workbench does not exceed the working position when moving forward and backward.

[0053] The workbench 5 further comprises a cantilever crane 12 , which is installed on the rear side of the workbench 5 .

[0054] It also includes a drag chain 10, which is arranged between the base 1 and the bottom of the workbench 5 to protect the cables in the device.

[0055] The control panel 13 in the utility model completes the operation control of the impeller disassembly and assembly machine, and is designed with two working modes: manual and automatic. The control system of the control panel 13 is connected to the electronic components such as the motor, hydraulic cylinder assembly, electric push rod, reduction motor, displacement sensor, limit switch, etc. in the device. In manual mode, the operator can independently complete, for example, the extension and retraction of the jack rod, and the forward and backward movement and locking and unlocking of the workbench. In automatic mode, the system automatically completes the repeated extension and retraction of the jack rod and the step-by-step feeding and locking and unlocking of the workbench according to the predetermined workflow. The signal principle of its control system is as follows: Figure 5 shown.

[0056] The use principle of the utility model is that when disassembling the impeller, first press the manual button on the control panel to put the control panel in manual working mode, then press the jack retraction button to completely retract the jack output rod; replace the centering sleeve matching the impeller shaft, use the cantilever crane to hoist the impeller and the impeller shaft on the workbench, adjust the adjustment bracket 4 on the workbench to make the impeller shaft horizontal and coaxial with the axis of the jack output shaft; press the forward / backward button of the control panel to put the control panel in the appropriate position of the load-bearing guide rod, and ensure that the workbench locker is locked.

[0057] Press the automatic button on the control panel to put the control panel into automatic working mode. Press the start button, and the impeller disassembly and assembly device will start to automatically unload the impeller. During this process, the workbench will continuously realize automatic locking, unlocking, and automatic forward movement, and the jack rod will repeatedly shrink until the impeller shaft is pushed out.

[0058] When installing the impeller, first insert the impeller shaft into the appropriate position of the impeller center hole, and use a cantilever crane to hang it on the workbench to install the impeller in place. Adjust the adjustment bracket of the workbench so that the impeller center axis is aligned with the center of the workbench, and at the same time align the impeller axis with the jack axis. Press the manual button on the control panel to put the control panel in manual working mode. Use the strategy of "aligning while pushing in", constantly shake the alignment mechanism handwheel, and after the impeller shaft and the impeller center hole are completely aligned, press the jacking button on the control panel, and continuously take alignment measures for the impeller shaft and the impeller center hole as needed until the impeller shaft is completely pressed in and installed. During this process, it is necessary to manually operate the relevant buttons on the control panel several times to make the workbench repeat the "unlock-forward-lock" action, and it is necessary to manually operate the relevant buttons on the control panel several times to make the jack repeat the "pushing-retracting" action.

Claims

1. A large and medium-sized water pump impeller disassembly and assembly device, characterized in that: include: Base (1); A bedside box (2) is arranged at the right end of the base (1), and a hydraulic cylinder assembly is installed on the bedside box (2); A support box (3) is arranged at the left end of the base (1); A workbench (5) is movably arranged on a base (1), a wheel and a driving assembly are arranged at the bottom of the workbench (5), and the workbench (5) can be moved left and right on the base (1), an adjustment bracket (4) is arranged on the right side of the workbench (5), a workbench box is arranged on the left side of the workbench (5), a U-shaped groove is arranged in the middle of the upper part of the workbench box, through holes with sleeves are arranged on the left and right sides of the workbench box, and lockers (9) are installed at the through holes; There are two load-bearing guide rods (7), which are respectively movably passed through the sleeves in the through holes on the left and right sides of the workbench box body. The locker (9) fixes the workbench (5) by clamping on the load-bearing guide rods (7). The two ends of the load-bearing guide rods (7) are respectively installed on the headboard box (2) and the support box (3).

2. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: The hydraulic cylinder assembly comprises a jack (14), two hydraulic joints on the jack, a hydraulic solenoid valve and a jack rod displacement sensor. The jack (14) is installed in the middle of the left side of the bedside box (2). The two hydraulic joints are connected to an external hydraulic station (11) to provide working pressure for the jack. The hydraulic solenoid valve is controlled by a control system of a control console (13) and is a hydraulic switch for retracting and extending the jack rod. The displacement sensor senses the extension length of the jack rod in real time.

3. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: The locking device (9) is composed of a pair of locking plates and an electric push rod. The top of the locking plate is an arc-shaped structure. The root of the locking plate is provided with fan teeth. The root of the locking plate is hinged to the workbench box through a pin shaft. The fan teeth at the root of the pair of locking plates are meshed with each other. The electric push rod is arranged on the workbench box. The shaft head of the electric push rod is hinged to one of the locking plates. The electric push rod pushes and pulls one of the locking plates, and the other locking plate opens and closes symmetrically. When the pair of locking plates are closed, the arc-shaped structure of the locking plates is clamped in the annular groove provided on the load-bearing guide rod (7), thereby completing the locking of the workbench.

4. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: The workbench (5) has rotating shafts installed on the left and right sides of the bottom thereof along the front-rear direction via bearings, and both ends of the rotating shafts are provided with running wheels. The driving assembly comprises a gear a arranged on the left rotating shaft, a reduction motor installed on the workbench (5), and a gear b arranged on the output shaft of the reduction motor. The gear b is meshed with the gear a, and the reduction motor drives the left rotating shaft to rotate, thereby causing the workbench (5) to move left and right on the base (1).

5. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: The adjustment bracket (4) comprises a base frame, two alignment wheels are movably arranged on the front and rear sides of the upper part of the base frame through a bracket, a nut is arranged at the bottom of the bracket, a screw rod is arranged on the inner side of the base frame along the front and rear direction, and external threads with opposite rotation directions are arranged at both ends of the screw rod, and the brackets of the two alignment wheels are respectively threadedly assembled on the external threads at both ends of the screw rod, and the two ends of the screw rod extend out of the base frame, and a hand wheel is arranged on the end of the screw rod.

6. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: It also includes a centering sleeve, which is placed in a U-shaped groove on the upper part of the workbench box body and is used to ensure that the axis of the impeller shaft and the axis of the output shaft of the jack (14) are on the same straight line.

7. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: A displacement sensor is installed on the workbench, and workbench limit switches are arranged on the left and right sides of the base.

8. A large and medium-sized water pump impeller disassembly and assembly device according to claim 1, characterized in that: It also includes a cantilever crane (12), which is installed on the rear side of the workbench (5).

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