Power steering oil pump belt pulley assembling equipment

Abstract

The invention discloses power steering oil pump belt pulley assembling equipment which comprises a pull rod used for being connected with a pump shaft of a power steering oil pump, a positioning seat used for containing a belt pulley, a positioning sleeve arranged on the positioning seat and enabling the belt pulley and the pump shaft of the power steering oil pump to be in a coaxial state, and a driving device connected with the pull rod. The pull rod is sleeved with the positioning sleeve, and the driving device is used for controlling the pull rod to linearly move in the set direction, so that a pump shaft of the power steering oil pump is inserted into a center hole of the belt pulley. According to the power steering oil pump belt pulley assembling equipment, it can be ensured that the inclination and extrusion phenomena cannot occur in the process that the belt pulley is installed into the pump shaft, the assembling effect of the power steering oil pump and the belt pulley of a hydraulic power steering system can be improved, and the assembling efficiency can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle steering systems, and in particular to a power steering oil pump pulley assembly device. Background Art

[0002] As the power source of the hydraulic power steering system, the power steering oil pump has been used to this day for its compact structure, uniform flow, high volumetric efficiency, low noise and smooth operation. The driving force that makes the steering oil pump work is mainly obtained through the belt connection between the pulley and the engine pulley.

[0003] The existing pulley assembly tooling is assembled by a double-column hydraulic press, with a lower station fixed pulley device and an upper station pump shaft pulling device, which has the following problems:

[0004] 1. The upper station device is not coaxial with the lower station device, and the pulley is prone to tilt when being installed into the pump shaft, causing the pulley to be severely squeezed on one side, affecting the appearance of the oil pump assembly;

[0005] 2. The pull rod for pulley assembly is universal. There is a large gap between the pull rod and the pulley pump shaft section, resulting in severe shaking and easy breakage of the pull rod, which affects assembly efficiency.

[0006] It is hoped to provide an improved power steering oil pump pulley assembly device, particularly with regard to how to improve the assembly effect of the power steering oil pump and the pulley of the hydraulic power steering system. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a power steering oil pump pulley assembly device, the purpose of which is to improve the assembly effect of the power steering oil pump and the pulley of the hydraulic power steering system.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: power steering oil pump pulley assembly equipment, including a pull rod connected to the pump shaft of the power steering oil pump, a positioning seat for placing the pulley, a positioning sleeve arranged on the positioning seat and making the pulley and the pump shaft of the power steering oil pump in a coaxial state, and a driving device connected to the pull rod, the positioning sleeve is arranged on the pull rod, and the driving device is configured to control the pull rod to move linearly along a set direction so that the pump shaft of the power steering oil pump is inserted into the center hole of the pulley.

[0009] The pull rod is threadedly connected to the pump shaft of the power steering oil pump, and an external thread is arranged on the upper end of the pull rod.

[0010] The power steering oil pump pulley assembly device further comprises a positioning base, and the positioning base is mounted on the positioning base via a first bolt.

[0011] The power steering oil pump pulley assembly equipment also includes a bench panel, the positioning base is arranged on the bench panel, the pull rod passes through the center hole of the positioning base, and the driving device is located below the bench panel.

[0012] The driving device comprises a driving motor, a power transmission mechanism connected to the driving motor and a sliding plate connected to the power transmission mechanism. The sliding plate is connected to a fixed base, and the fixed base is connected to the pull rod.

[0013] The power transmission mechanism comprises a first transmission mechanism connected to the driving motor and a second transmission mechanism connected to the first transmission mechanism, and the sliding plate is connected to the second transmission mechanism.

[0014] The second transmission mechanism comprises a lead screw, a lead screw guide rail matched with the lead screw, and a guide rail frame connected to the lead screw guide rail, and the sliding plate is connected to the guide rail frame.

[0015] The lead screw is arranged on a positioning plate, a sliding track is arranged on the positioning plate, and the sliding plate is sleeved on the sliding track.

[0016] The first transmission mechanism is a belt transmission mechanism.

[0017] The power steering oil pump pulley assembly device of the present invention can ensure that the pulley will not be tilted or squeezed during the process of being installed into the pump shaft, thereby improving the assembly effect of the power steering oil pump and the pulley of the hydraulic power steering system and improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 This is a front view of the power steering oil pump pulley assembly device of the present invention;

[0020] Figure 2 It is a partial bottom view of the power steering oil pump pulley assembly device of the present invention;

[0021] Figure 3 It is a right side view of the power steering oil pump pulley assembly device of the present invention;

[0022] Figure 4 It is a partial cross-sectional view of the power steering oil pump pulley assembly device of the present invention;

[0023] Figure 5 is a top view of the power steering oil pump pulley assembly device of the present invention;

[0024] Figure 6 It is a schematic diagram of the assembly of the power steering oil pump pulley assembly equipment of the present invention;

[0025] Figure 7It is an axonometric view of the power steering oil pump pulley assembly equipment of the present invention;

[0026] The markings in the figure are:

[0027] 1. Pull rod; 2. Positioning sleeve; 3. Positioning base; 4. Stand panel; 5. Fixed base; 6. Sliding plate; 7. First bolt; 8. Sliding track; 9. Positioning plate; 10. M14 hexagonal nut; 11. Digital display panel; 12. Positioning seat; 13. Start button; 14. Guide rail frame; 15. Screw guide; 16. Screw; 17. Bearing seat; 18. Extension plate; 19. Motor positioning base plate; 20. Belt; 21. Driving pulley; 22. φ10 flat washer; 23. Drive motor; 24. Locking block; 25. Locking bolt; 26. Second bolt; 27. Power steering oil pump; 28. Pulley. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0029] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0030] like Figures 1 to 7 As shown, the present invention provides a power steering oil pump pulley assembly device, including a stand, a pull rod 1 for connecting with the pump shaft of the power steering oil pump, a positioning seat 12 for placing the pulley, a positioning sleeve 2 arranged on the positioning seat 12 and making the pulley and the pump shaft of the power steering oil pump in a coaxial state, and a driving device connected to the pull rod 1, the positioning sleeve 2 is sleeved on the pull rod 1, and the driving device is configured to control the pull rod 1 to move linearly along a set direction so that the pump shaft of the power steering oil pump is inserted into the center hole of the pulley.

[0031] Specifically, if Figures 1 to 7 As shown, the power steering oil pump pulley assembly equipment provided by the present invention solves the problems of easy tilting, severe extrusion and easy breakage of the pulley 1 during assembly, with the purpose of simplifying operation, improving efficiency and improving product quality.

[0032] like Figures 1 to 7As shown, the power steering oil pump pulley assembly device of the present invention also includes a positioning base 3 and a bench panel 4, the bench panel 4 is fixedly arranged on the bench, and the positioning seat 12 is installed on the positioning base 3 by the first bolt 7. A digital display panel 11 and a start button 13 are arranged on the bench, the bench panel 4 is arranged horizontally, the positioning base 3 is arranged on the bench panel 4, the pull rod 1 passes through the center hole of the positioning base 3, and the driving device is located below the bench panel 4. The pull rod 1, the positioning seat 12, the positioning sleeve 2 and the positioning base 3 constitute a tooling assembly, and its main function is to position the pulley to be assembled on the same axis as the pump shaft center of the power steering oil pump, to ensure that the pulley will not tilt during assembly, and also to carry the function of product changeover.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, a positioning outer circular step device is provided at the center of the positioning base plate, and the positioning outer circular step device is inserted into the center hole provided on the stand panel 4. A positioning outer circular step device is provided at the center of the positioning seat 12, and the positioning outer circular step device is inserted into the center hole provided on the positioning base plate. The positioning seat 12 is fixed and locked on the positioning base plate by the first bolt 7. A total of 4 first bolts 7 are provided, and the first bolt 7 is an M10×35 hexagon socket bolt. A positioning outer circular step is provided at the center of the positioning sleeve 2, and the positioning outer circular step is inserted into the center hole provided on the positioning seat 12, and is not locked. The positioning sleeve 2, the positioning seat 12, the positioning base plate and the pull rod 1 are coaxially arranged, and the axis of the pull rod 1 is a vertical line.

[0034] Preferably, the tie rod 1 is threadedly connected to the pump shaft of the power steering oil pump, an external thread is provided on the upper end of the tie rod 1, the tie rod 1 passes through the center hole of the positioning sleeve 2, and the tie rod 1 matches the positioning sleeve 2. The tie rod 1 and the positioning sleeve 2 are set as a matching combination, and when assembling different models of products or different sizes of pump shafts, only the tie rod 1 and the positioning sleeve 2 need to be replaced to achieve rapid model change. When replacing the positioning sleeve 2, the positioning sleeve 2 can be directly removed from the positioning seat 12 for replacement, which is convenient and simple to operate.

[0035] like Figures 1 to 4 As shown, the driving device includes a driving motor 23, a power transmission mechanism connected to the driving motor 23, and a sliding plate 6 connected to the power transmission mechanism, the sliding plate 6 is connected to the fixed base 5, and the fixed base 5 is connected to the pull rod 1. The sliding plate 6 is horizontally arranged, the fixed base 5 is fixedly arranged on the top surface of the sliding plate 6, and the sliding plate 6 and the fixed base 5 are located below the platform panel 4. After the driving motor 23 is running, the sliding plate 6 is driven by the power transmission mechanism to move linearly in the vertical direction, and the sliding plate 6 drives the fixed base 5 and the pull rod 1 to move linearly synchronously.

[0036] Preferably, the lower end of the pull rod 1 is threadedly connected to the fixed base 5, and an external thread is provided at the lower end of the pull rod 1 to facilitate disassembly and assembly when replacing the pull rod 1.

[0037] like Figures 1 to 7 As shown, the power transmission mechanism includes a first transmission mechanism connected to the driving motor 23 and a second transmission mechanism connected to the first transmission mechanism, and the sliding plate 6 is connected to the second transmission mechanism.

[0038] Preferably, the second transmission mechanism includes a lead screw 16, a lead screw guide 15 matched with the lead screw 16, and a guide frame 14 connected to the lead screw guide 15, and the sliding plate 6 is connected to the guide frame 14. The lead screw guide 15 and the lead screw 16 form a spiral transmission, the lead screw guide 15 is connected to the guide frame 14, the guide frame 14 is fixedly connected to the upper sliding plate 6, the lead screw 16 is vertically arranged, the lower end of the lead screw 16 is connected to the output end of the first transmission mechanism, and the first transmission mechanism transmits power to the lead screw 16. The lead screw 16 is arranged on the positioning plate 9, the positioning plate 9 is provided with a sliding track 8, and the sliding plate 6 is sleeved on the sliding track 8.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, the sliding plate 6 is arranged below the platform panel 4, and four sliding rails 8 pass through the sliding plate 6. The sliding rails 8 guide the sliding plate 6, and the sliding plate 6 can slide up and down along the sliding rails 8; the center of the fixed base 5 is provided with a positioning step circular hole device at the center of the sliding plate 6, and the lower end of the fixed base 5 is fixed and locked on the sliding plate 6 by the second bolt 26, and the second bolt 26 is provided with four, and the second bolt 26 is an M10×70 hexagon socket bolt, and the upper end of the fixed base 5 is provided with an M18 internal threaded hole connected with the pull rod 1. The guide rail frame 14 is fixed and locked with the sliding plate 6 by four first bolts 7, and four M10 threaded holes are provided below the sliding plate 6. The lower end of the lead screw 16 is connected with two lead screw support bearings by interference fit, and the bearings are provided in the bearing seat 17, and the bearing seat 17 is fixed and locked with the positioning plate 9 by four first bolts 7. The upper end of the sliding rail 8 is fixedly connected with the platform panel 4, and the lower end of the sliding rail 8 is fixedly connected with the positioning plate 9.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, the first transmission mechanism is a belt transmission mechanism, which includes a driving pulley 21, a driven pulley and a belt 20 that cooperates with the driving pulley 21 and the driven pulley. The driving pulley 21 is fixedly arranged at the output end of the driving motor 23, and the driven pulley is fixedly arranged at the lower end of the screw 16.

[0041] like Figures 1 to 3As shown, the lower end of the lead screw 16 is fixedly connected to the driven pulley through three first bolts 7, and the shaft end of the drive motor 23 is fixedly connected to the driving pulley 21 through three first bolts 7. The driving pulley 21 and the driven pulley are connected by a belt 20 and tightened by adjusting the locking bolt 25. When the driven pulley obtains power through the belt 20, it will drive the lead screw 16 to rotate, and the rotational motion of the lead screw is converted into the up and down linear motion of the sliding plate 6 through the lead screw guide 15, thereby realizing the conversion of the motion direction.

[0042] In this embodiment, the screw assembly arranged in the middle for moving up and down has the advantages of high precision, precise positioning, friction resistance and long service life, and includes a fixed base 5 positioned above the sliding plate 6 and an ultra-precision screw guide 15 below, whose main function is to convert the rotational motion of the screw into the axial motion of the pulley assembly device through the screw guide 15, thereby realizing the assembly function of the pulley. The pulley assembly arranged at the bottom for transmitting power has the main function of driving the screw assembly to rotate by transmitting the kinetic energy output by the servo motor to the screw assembly through the belt and pulley.

[0043] In this embodiment, the drive motor 23 is a servo motor, which has the advantages of high precision, fast response, strong programmability and high reliability. Its main function is to output electrical energy in the form of kinetic energy to drive the rotation of the transmission mechanism, and it is the power source of the entire device.

[0044] like Figures 1 to 3 As shown, two extension plates 18 are arranged on the positioning plate 9, and the extension plates 18 are fixedly connected to the positioning plate 9 by four first bolts 7. A motor positioning base plate 19 is arranged below the extension plates 18, and the extension plates 18 are fixed to the driving motor 23 by another four first bolts 7. The shaft end of the driving motor 23 passes through the motor positioning base plate 19 and is connected to the driving pulley 21 by three first bolts 7. Two M10 internal threads are arranged on the right side of the motor positioning base plate 19, and the locking block 24 is fixed by two first screws. The bolt 7 is fixedly connected to the motor positioning base plate 19, and two locking bolts 25 are arranged on the locking block 24 at the positions corresponding to the overhanging plates 18, passing through the locking block 24 and over the right sides of the two overhanging plates 18. Two sections of long grooves that can move left and right are arranged on the motor positioning base plate 19, and four first bolts 7 and φ10 flat washers 22 are arranged in the long grooves to be connected with the overhanging plates 18. The tension of the belt 20 is adjusted by rotating the locking bolts 25. After the adjustment is completed, the four first bolts 7 under the motor positioning base plate 19 are locked.

[0045] The working process of the power steering oil pump pulley assembly equipment provided by the present invention is as follows:

[0046] 1. Determine the specifications of the pull rod 1 and positioning sleeve 2 to be used according to the product model;

[0047] 2. Manually screw the tie rod 1 into the fixed base 5 and tighten the tie rod 1 with a wrench, then put the positioning sleeve 2 into the positioning seat 12, and put the positioning sleeve 2 on the tie rod 1;

[0048] 3. Press the start button 13 on the stand, and the limit position of the pull rod 1 will be displayed on the digital display panel 11. Set the relevant parameters according to the assembly size requirements;

[0049] 4. Place the pulley to be assembled upside down on the positioning seat 12, and use the positioning sleeve 2 to position the pulley. The pump shaft of the power steering oil pump is installed on the upper end of the tie rod 1, and the pump shaft of the power steering oil pump is coaxial with the pulley;

[0050] 5. Start the start button 13 on the stand to drive the motor 23 to run, and the pull rod 1 drives the pump shaft of the power steering oil pump to move linearly downward, and the pump shaft of the power steering oil pump is installed into the center hole of the pulley from top to bottom;

[0051] 6. When the pull rod 1 moves to the set position, it will quickly return to the origin. Remove the power steering oil pump equipped with the pulley and the assembly is completed.

[0052] The power steering oil pump pulley assembly equipment of the above structure has the following advantages:

[0053] 1. When the pulley is installed into the pump shaft, there will be no tilting or squeezing;

[0054] 2. The tie rod 1 matches the positioning sleeve 2, the pump shaft has a small gap and no shaking before being installed into the pulley, and the tie rod 1 is not easy to break;

[0055] 3. Simple operation, improved efficiency and improved product quality.

[0056] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. Power steering oil pump pulley assembly equipment, characterized by: It includes a pull rod for connecting to the pump shaft of a power steering oil pump, a positioning seat for placing a pulley, a positioning sleeve arranged on the positioning seat and making the pulley and the pump shaft of the power steering oil pump coaxial, and a driving device connected to the pull rod, the positioning sleeve is arranged on the pull rod, and the driving device is configured to control the pull rod to move linearly along a set direction so that the pump shaft of the power steering oil pump is inserted into the center hole of the pulley.

2. The power steering oil pump pulley assembly device according to claim 1, characterized in that: The pull rod is threadedly connected to the pump shaft of the power steering oil pump, and an external thread is arranged on the upper end of the pull rod.

3. The power steering oil pump pulley assembly device according to claim 1, characterized in that: It also includes a positioning base, and the positioning seat is installed on the positioning base through a first bolt.

4. The power steering oil pump pulley assembly device according to claim 3, characterized in that: It also includes a stand panel, the positioning base is arranged on the stand panel, the pull rod passes through the central hole of the positioning base, and the driving device is located below the stand panel.

5. The power steering oil pump pulley assembly device according to any one of claims 1 to 4, characterized in that: The driving device comprises a driving motor, a power transmission mechanism connected to the driving motor and a sliding plate connected to the power transmission mechanism. The sliding plate is connected to a fixed base, and the fixed base is connected to the pull rod.

6. The power steering oil pump pulley assembly device according to claim 5, characterized in that: The power transmission mechanism comprises a first transmission mechanism connected to the driving motor and a second transmission mechanism connected to the first transmission mechanism, and the sliding plate is connected to the second transmission mechanism.

7. The power steering oil pump pulley assembly device according to claim 6, characterized in that: The second transmission mechanism comprises a lead screw, a lead screw guide rail matched with the lead screw, and a guide rail frame connected to the lead screw guide rail, and the sliding plate is connected to the guide rail frame.

8. The power steering oil pump pulley assembly device according to claim 7, characterized in that: The lead screw is arranged on a positioning plate, a sliding track is arranged on the positioning plate, and the sliding plate is sleeved on the sliding track.

9. The power steering oil pump pulley assembly device according to claim 6, characterized in that: The first transmission mechanism is a belt transmission mechanism.

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