Press fitting device for assembling cylindrical bearing

Abstract

The utility model relates to the technical field of press-fitting devices, in particular to a press-fitting device for assembling a cylindrical bearing, which improves the press-fitting efficiency, the upper and lower stress uniformity of bearing press-fitting and the press-fitting quality of bearing assembly by enabling a mechanical part and the bearing to move oppositely. Comprising a base and a first hydraulic oil cylinder installed at the bottom end of the base. The device comprises a base, a first hydraulic oil cylinder, a fixing device, a pushing device, a first piston, multiple sets of first push rods, a top plate and a pressing plate, the first piston is installed in the first hydraulic oil cylinder in an up-down sliding mode, the multiple sets of first push rods slidably penetrate through the base and the top end of the first hydraulic oil cylinder, and the bottom ends of the multiple sets of first push rods are connected with the top end of the first piston; the bottom end of the top plate is connected with the top ends of the first push rods, a fixing device is arranged on the top plate and used for positioning mechanical parts, a pushing device is arranged on the base, and the pressing plate is installed at the moving end of the pushing device.

Description

Technical Field

[0001] The utility model relates to the technical field of press-fitting devices, in particular to a press-fitting device for assembling cylindrical bearings. Background Art

[0002] In the existing mechanical assembly process, the assembly of cylindrical bearings is an important link. However, due to the characteristics and assembly requirements of cylindrical bearings, the assembly process is complicated and inefficient.

[0003] As in the patent with the prior art authorization announcement number CN207900587U, the utility model provides a bearing sealing ring press-fitting device, which belongs to the field of bearing processing equipment, including: a workbench with a working surface; a pressure device arranged above the working surface and forming a press-fitting space between the working surface, the pressure device is used to apply pressure toward the working surface; and two baffles arranged on the working surface, a guide groove connecting the press-fitting space is formed between the working surface and the two baffles.

[0004] However, during the use of the device, it was found that when the bearing assembly needs to be press-fitted into the interior of a mechanical part such as a roller, the one-way press-fitting of the bearing by the pressure device is inefficient and easily causes uneven force on the upper and lower sides of the bearing, thereby reducing the quality of the bearing assembly press-fitting. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a cylindrical bearing assembly press-fitting device which improves the press-fitting efficiency, improves the uniformity of the upper and lower forces of the bearing press-fitting, and improves the press-fitting quality of the bearing assembly by moving the mechanical parts and the bearing in opposite directions.

[0006] The utility model discloses a press-fitting device for assembling a cylindrical bearing, comprising a base and a first hydraulic oil cylinder, wherein the first hydraulic oil cylinder is mounted at the bottom end of the base; the utility model also comprises a fixing device, a pushing device, a first piston, a plurality of first push rods, a top plate and a pressing plate, wherein the first piston is mounted inside the first hydraulic oil cylinder for sliding up and down, the plurality of first push rods all slide through the base and the top end of the first hydraulic oil cylinder, and the bottom ends of the plurality of first push rods are all connected to the top ends of the first pistons, the bottom ends of the top plates are connected to the top ends of the plurality of first push rods, a fixing device is arranged on the top plate, the fixing device is used for positioning a mechanical part, a pushing device is arranged on the base, and the pressing plate is mounted on the moving end of the pushing device, The pushing device is used to drive the pressing plate and the first piston to move towards each other; the mechanical part is placed on the top of the top plate, and then the mechanical part is positioned by the fixing device, and then the bearing is placed above the middle mounting hole of the mechanical part, and the pressing plate is pushed downward by the pushing device, so that the pressing plate pushes the bearing to move downward and press-fit into the mechanical part. At the same time, the pushing device drives the first piston to move upward. After the first piston moves upward, the top plate is pushed upward by multiple groups of first push rods, so that the top plate drives the mechanical part to move upward, and then the mechanical part and the bearing move towards each other, thereby improving the press-fitting efficiency, improving the uniformity of the upper and lower forces of the bearing press-fitting, and improving the bearing assembly press-fitting quality.

[0007] Preferably, the pushing device includes a bracket, a second hydraulic oil cylinder, a second piston, a hydraulic cylinder, a second push rod and a delivery pipe, the bracket is installed at the top of the base, the second hydraulic oil cylinder is installed on the outer side wall of the bracket, the second piston is installed inside the second hydraulic oil cylinder for sliding up and down, the fixed end of the hydraulic cylinder is installed at the top of the second hydraulic oil cylinder, the movable end of the hydraulic cylinder is connected to the top of the second piston, the top of the second push rod is connected to the bottom of the second piston, the bottom of the second push rod is connected to the top of the pressing plate, the top of the delivery pipe is connected to the bottom of the second hydraulic oil cylinder, and the bottom of the delivery pipe is connected to the bottom of the first hydraulic oil cylinder; through The control hydraulic cylinder moving end pushes the second piston downward, so that the second piston drives the second push rod to move downward, thereby the second push rod drives the pressing plate to move downward. After the second piston moves downward, the lower hydraulic oil is transported to the bottom of the first hydraulic oil cylinder through the delivery pipe, so that the hydraulic oil entering the first hydraulic oil cylinder pushes the first piston upward, thereby causing the top plate and the pressing plate to move closer to each other. After the second piston moves upward, the lower hydraulic oil is extracted, so that the delivery pipe extracts the hydraulic oil at the bottom of the first hydraulic oil cylinder, and then the top plate and the pressing plate move away from each other, thereby improving the working efficiency of the device.

[0008] Preferably, the fixing device includes a driving device, a guide groove, two groups of sliders, two groups of clamping blocks and two groups of positioning grooves, the guide groove is installed on the top of the top plate, the two groups of sliders are installed on the guide groove by the driving device for opposite sliding, the two groups of clamping blocks are respectively installed on the outer side walls of the two groups of sliders, and the outer side walls of the two groups of clamping blocks are respectively provided with positioning grooves at relative positions; the mechanical part is placed on the top of the top plate, and then the two groups of sliders are driven by the driving device to move towards each other, so that the two groups of sliders drive the two groups of clamping blocks to move towards each other, so that the two groups of clamping blocks clamp and fix the mechanical part through the two groups of positioning grooves, thereby improving the stability of the bearing assembly press.

[0009] Preferably, the driving device includes a bidirectional screw and a handwheel, the bidirectional screw is rotatably installed on the inner wall of the guide groove, the handwheel is installed on the end of the bidirectional screw, and two groups of sliders are respectively screwed on the left and right parts of the outer wall of the bidirectional screw; by grabbing the handwheel to drive the bidirectional screw to rotate, the bidirectional screw drives the two groups of sliders to move in opposite directions, thereby improving the convenience of the two groups of clamping blocks to clamp the mechanical parts.

[0010] Preferably, it also includes multiple groups of guide columns and multiple groups of guide kits, the multiple groups of guide columns are all installed on the outer wall of the pressing plate, the multiple groups of guide kits are all installed on the outer wall of the second hydraulic oil cylinder, and the multiple groups of guide columns slide through the interior of the multiple groups of guide kits respectively; by setting up multiple groups of guide columns and multiple groups of guide kits, the stability of the pressing plate is improved.

[0011] Preferably, two sets of bolts are further included, the two sets of bolts are respectively installed on the outer side walls of the two sets of sliders, and the two sets of positioning grooves are respectively installed on the two sets of sliders through the two sets of bolts; by providing two sets of bolts, the convenience of disassembly and replacement of the two sets of positioning grooves is improved.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the mechanical part is placed on the top of the top plate, and then the mechanical part is positioned by a fixing device, and then the bearing is placed above the middle mounting hole of the mechanical part, and the pressing plate is pushed downward by the pushing device, so that the pressing plate pushes the bearing to move downward and is pressed into the mechanical part, and at the same time, the pushing device drives the first piston to move upward, and after the first piston moves upward, the top plate is pushed upward by multiple groups of first push rods, so that the top plate drives the mechanical part to move upward, and then the mechanical part and the bearing move in opposite directions, thereby improving the press-fitting efficiency, improving the uniformity of the upper and lower forces of the bearing press-fitting, and improving the bearing assembly press-fitting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the partial axonometric structure of the connection between the bracket and the second hydraulic oil cylinder, etc.;

[0015] Figure 3It is a schematic diagram of the partial isometric structure of the connection between the second piston and the hydraulic cylinder, etc.;

[0016] Figure 4 It is a schematic diagram of the axonometric local structure of the connection between the slider and the positioning groove;

[0017] Figure 5 It is a schematic diagram of the axonometric structure of the connection between the top plate and the first push rod, etc.

[0018] Markings in the accompanying drawings: 1. base; 2. first hydraulic oil cylinder; 3. first piston; 4. first push rod; 5. top plate; 6. pressing plate; 7. bracket; 8. second hydraulic oil cylinder; 9. second piston; 10. hydraulic cylinder; 11. second push rod; 12. delivery pipe; 13. guide groove; 14. slider; 15. clamping block; 16. positioning groove; 17. bidirectional screw; 18. handwheel; 19. guide column; 20. guide kit; 21. bolt. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 5 As shown, a press-fitting device for assembling a cylindrical bearing of the utility model comprises a base 1 and a first hydraulic oil cylinder 2, wherein the first hydraulic oil cylinder 2 is mounted at the bottom end of the base 1; further comprising a fixing device, a pushing device, a first piston 3, a plurality of first push rods 4, a top plate 5 and a pressing plate 6, wherein the first piston 3 is mounted inside the first hydraulic oil cylinder 2 for sliding movement up and down, the plurality of first push rods 4 all slide through the base 1 and the top end of the first hydraulic oil cylinder 2, and the bottom ends of the plurality of first push rods 4 are all connected to the top ends of the first piston 3, the bottom ends of the top plates 5 are connected to the top ends of the plurality of first push rods 4, a fixing device is arranged on the top plate 5, and the fixing device is used to position the mechanical parts, a pushing device is arranged on the base 1, and the pressing plate 6 is mounted on the moving end of the pushing device, and the pushing device is used to drive the pressing plate 6 and the first piston 3 to move in opposite directions;

[0022] like Figure 2As shown, the pushing device includes a bracket 7, a second hydraulic oil cylinder 8, a second piston 9, a hydraulic cylinder 10, a second push rod 11 and a delivery pipe 12, the bracket 7 is mounted on the top of the base 1, the second hydraulic oil cylinder 8 is mounted on the outer side wall of the bracket 7, the second piston 9 is mounted inside the second hydraulic oil cylinder 8 for sliding up and down, the fixed end of the hydraulic cylinder 10 is mounted on the top of the second hydraulic oil cylinder 8, the movable end of the hydraulic cylinder 10 is connected to the top of the second piston 9, the top of the second push rod 11 is connected to the bottom of the second piston 9, the bottom of the second push rod 11 is connected to the top of the pressing plate 6, the top of the delivery pipe 12 is connected to the bottom of the second hydraulic oil cylinder 8, and the bottom of the delivery pipe 12 is connected to the bottom of the first hydraulic oil cylinder 2;

[0023] In this embodiment, the mechanical part is placed on the top of the top plate 5, and then the mechanical part is positioned by a fixing device, and then the bearing is placed above the mounting hole in the middle of the mechanical part, and the pressing plate 6 is pushed downward by the pushing device, so that the pressing plate 6 pushes the bearing downward to be pressed into the mechanical part, and at the same time, the pushing device drives the first piston 3 to move upward. After the first piston 3 moves upward, the top plate 5 is pushed upward through multiple groups of first push rods 4, so that the top plate 5 drives the mechanical part to move upward, and then the mechanical part and the bearing move in opposite directions, thereby improving the press-fitting efficiency, improving the uniformity of the upper and lower forces of the bearing press-fitting, and improving the bearing assembly press-fitting quality.

[0024] Example 2

[0025] On the basis of Example 1, Figure 4 As shown, the utility model is a press-fitting device for assembling a cylindrical bearing, the fixing device includes a driving device, a guide groove 13, two groups of sliders 14, two groups of clamping blocks 15 and two groups of positioning grooves 16, the guide groove 13 is installed on the top of the top plate 5, the two groups of sliders 14 are slidably installed on the guide groove 13 by the driving device, the two groups of clamping blocks 15 are respectively installed on the outer side walls of the two groups of sliders 14, and the positioning grooves 16 are respectively provided at the relative positions of the outer side walls of the two groups of clamping blocks 15;

[0026] like Figure 4 As shown, the driving device includes a bidirectional screw 17 and a hand wheel 18. The bidirectional screw 17 is rotatably mounted on the inner wall of the guide groove 13, and the hand wheel 18 is mounted on the end of the bidirectional screw 17. Two sets of sliders 14 are respectively screwed on the left and right parts of the outer wall of the bidirectional screw 17.

[0027] like Figure 3 As shown, it also includes multiple groups of guide columns 19 and multiple groups of guide kits 20, the multiple groups of guide columns 19 are all installed on the outer wall of the pressing plate 6, the multiple groups of guide kits 20 are all installed on the outer wall of the second hydraulic oil cylinder 8, and the multiple groups of guide columns 19 slide through the interior of the multiple groups of guide kits 20 respectively;

[0028] like Figure 4As shown, it also includes two groups of bolts 21, the two groups of bolts 21 are respectively installed on the outer side walls of the two groups of sliders 14, and the two groups of positioning grooves 16 are respectively installed on the two groups of sliders 14 through the two groups of bolts 21;

[0029] After the second piston 9 moves upward, the hydraulic oil at the bottom is extracted, so that the delivery pipe 12 extracts the hydraulic oil at the bottom of the first hydraulic oil cylinder 2, and then the top plate 5 and the pressing plate 6 move away from each other, thereby improving the working efficiency of the device, placing the mechanical parts on the top of the top plate 5, and then driving the two sets of sliders 14 to move towards each other through the driving device, so that the two sets of sliders 14 drive the two sets of clamping blocks 15 to move towards each other, so that the two sets of clamping blocks 15 clamp and fix the mechanical parts through the two sets of positioning grooves 16, thereby improving the stability of the bearing assembly press.

[0030] The utility model provides a press-fitting device for assembling a cylindrical bearing. When working, a mechanical part is placed on the top of a top plate 5, and then the mechanical part is positioned by a fixing device. Then the bearing is placed above the mounting hole in the middle of the mechanical part, and a pressing plate 6 is pushed downward by a pushing device, so that the pressing plate 6 pushes the bearing to move downward and is press-fitted into the mechanical part. At the same time, the pushing device drives the first piston 3 to move upward. After the first piston 3 moves upward, the top plate 5 is pushed upward by multiple groups of first push rods 4, so that the top plate 5 drives the mechanical part to move upward, and then the mechanical part and the bearing move in opposite directions.

[0031] The hydraulic cylinder 10 of the press-fitting device for assembling a cylindrical bearing of the utility model is purchased on the market, and technicians in the industry only need to install and operate it according to the accompanying instruction manual, without the need for creative labor by technicians in the field.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A press-fitting device for assembling a cylindrical bearing, comprising a base (1) and a first hydraulic oil cylinder (2), wherein the first hydraulic oil cylinder (2) is mounted at the bottom end of the base (1); characterized in that: It also includes a fixing device, a pushing device, a first piston (3), a plurality of first push rods (4), a top plate (5) and a pressing plate (6); the first piston (3) is slidably mounted inside the first hydraulic oil cylinder (2) up and down; the plurality of first push rods (4) all slide through the base (1) and the top of the first hydraulic oil cylinder (2); and the bottom ends of the plurality of first push rods (4) are all connected to the top of the first piston (3); the bottom end of the top plate (5) is connected to the top of the plurality of first push rods (4); a fixing device is arranged on the top plate (5) for positioning the mechanical part; a pushing device is arranged on the base (1); the pressing plate (6) is mounted on the moving end of the pushing device; and the pushing device is used to drive the pressing plate (6) and the first piston (3) to move in opposite directions.

2. A press-fitting device for assembling a cylindrical bearing according to claim 1, characterized in that: The pushing device comprises a bracket (7), a second hydraulic oil cylinder (8), a second piston (9), a hydraulic cylinder (10), a second push rod (11) and a delivery pipe (12); the bracket (7) is mounted on the top of the base (1); the second hydraulic oil cylinder (8) is mounted on the outer wall of the bracket (7); the second piston (9) is mounted inside the second hydraulic oil cylinder (8) to slide up and down; the fixed end of the hydraulic cylinder (10) is mounted on the top of the second hydraulic oil cylinder (8); the movable end of the hydraulic cylinder (10) is connected to the top of the second piston (9); the top of the second push rod (11) is connected to the bottom of the second piston (9); the bottom of the second push rod (11) is connected to the top of the pressing plate (6); the top of the delivery pipe (12) is connected to the bottom of the second hydraulic oil cylinder (8); and the bottom of the delivery pipe (12) is connected to the bottom of the first hydraulic oil cylinder (2).

3. A press-fitting device for assembling a cylindrical bearing according to claim 1, characterized in that: The fixing device comprises a driving device, a guide groove (13), two groups of sliders (14), two groups of clamping blocks (15) and two groups of positioning grooves (16); the guide groove (13) is mounted on the top of the top plate (5); the two groups of sliders (14) are mounted on the guide groove (13) by the driving device so as to slide in opposite directions; the two groups of clamping blocks (15) are respectively mounted on the outer side walls of the two groups of sliders (14); and the positioning grooves (16) are respectively arranged at relative positions on the outer side walls of the two groups of clamping blocks (15).

4. A press-fitting device for assembling a cylindrical bearing as claimed in claim 3, characterized in that: The driving device comprises a bidirectional lead screw (17) and a hand wheel (18), wherein the bidirectional lead screw (17) is rotatably mounted on the inner side wall of the guide groove (13), the hand wheel (18) is mounted on the end of the bidirectional lead screw (17), and two sets of sliders (14) are respectively screwed on the left and right parts of the outer side wall of the bidirectional lead screw (17).

5. A press-fitting device for assembling a cylindrical bearing as claimed in claim 1 or 2, characterized in that: It also includes multiple groups of guide columns (19) and multiple groups of guide kits (20), wherein the multiple groups of guide columns (19) are all installed on the outer wall of the pressing plate (6), and the multiple groups of guide kits (20) are all installed on the outer wall of the second hydraulic oil cylinder (8), and the multiple groups of guide columns (19) slide through the interior of the multiple groups of guide kits (20) respectively.

6. A press-fitting device for assembling a cylindrical bearing as claimed in claim 3, characterized in that: It also includes two groups of bolts (21), which are respectively mounted on the outer side walls of the two groups of slide blocks (14), and the two groups of positioning grooves (16) are respectively mounted on the two groups of slide blocks (14) through the two groups of bolts (21).

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