Self-adaptive universal shaft bracket

Abstract

The utility model discloses a self-adaptation type cardan shaft bracket which comprises a base, a pair of vertical plates fixedly connected to the top of the base and a supporting frame arranged between the two vertical plates, the side, corresponding to the vertical plates, of the supporting frame is fixedly connected with a connecting rod, and the connecting rod is vertically connected with the vertical plates in a sliding mode. A horizontal fixing plate is fixedly connected outside the vertical plate, a sliding rod capable of vertically moving is arranged between the fixing plate and the connecting rod, a first spring is arranged on the fixing plate, the sliding rod is sleeved with the first spring, the top end of the sliding rod is in threaded connection with a first nut, and the first spring is clamped between the first nut and the fixing plate. Due to the fact that the supporting frame and the vertical plate are elastically connected through the first spring, the supporting frame can move under the acting force of the cardan shaft, and the problems that the acting force between the cardan shaft and the supporting frame is too large, abrasion of the contact point of the supporting frame and the cardan shaft is aggravated after long-term work, noise is increased, a cardan joint bearing is damaged, and transmission efficiency is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to an adaptive universal joint bracket. Background Technology

[0002] In the steel rolling process, universal joints are key equipment for transmitting power and torque to the rolls. During operation, universal joints bear significant axial, radial, and torsional forces. In actual operation, universal joints are supported by universal joint brackets to reduce the stress on the universal joints during operation.

[0003] A traditional universal joint bracket includes a base, a pair of uprights fixedly connected to the top of the base, and a support frame set between the two uprights. The universal joint passes through the support frame and is supported by the support frame.

[0004] Because the support frame and the vertical plate are fixed together with bolts, this type of universal joint bracket lacks the ability to adapt to axial offset and angular changes under complex working conditions. Once the support frame is connected to the vertical plate, its position is fixed. Therefore, during universal joint rotation, periodic mutual compression occurs between the support frame and the universal joint. Over time, this can lead to accelerated wear at the contact points between the universal joint bracket and the universal joint, resulting in increased noise, damage to the universal joint bearings, and decreased transmission efficiency. During mill or roll changes, the connecting bolts between the support frame and the vertical plate need to be loosened, and the position of the support frame adjusted to accommodate the position and orientation of the universal joint bushing, matching it to the roll coupling shaft. Afterward, the support frame and the vertical plate are bolted together. This process is time-consuming and labor-intensive, significantly reducing operational efficiency.

[0005] Patent CN206153293U discloses a universal joint bracket, including an adjusting cylinder, a fixing frame, a base, a mounting seat, and a sleeve. By adjusting a telescopic rod, the position of the mounting seat connected to the top of the telescopic rod is adjusted accordingly. However, after the position is adjusted, the position of the sleeve remains fixed. Therefore, after long-term operation, the force between the sleeve and the universal joint will still cause wear on the two components at the contact point.

[0006] Patent CN102389901A discloses a hydraulic device for a universal joint bracket used in strip rolling mills, including a base, bracket cylinder, guide rod, movable frame, support screw, and support pad. During roll installation or replacement, the support pad provides support through the bracket cylinder, allowing for convenient and quick roll installation or replacement, reducing worker workload, shortening auxiliary time, and improving work efficiency. However, after long-term operation, the fixed position of the support pad leads to wear between the support pad and the universal joint due to the interaction force. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an adaptive universal joint bracket to solve the problems that current universal joint brackets are prone to wear at the contact points between the universal joint bracket and the universal joint after long-term use, which leads to increased noise, damage to the universal joint bearing, and reduced transmission efficiency.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] An adaptive universal joint bracket includes a base, a pair of parallel uprights fixedly connected to the top of the base, and a support frame disposed between the two uprights. A horizontal connecting rod is fixedly connected to one side of the support frame corresponding to the uprights. The connecting rod is vertically slidably connected to the uprights. A horizontal fixing plate is fixedly connected to the outside of the uprights. The fixing plate is located above the connecting rod. A vertically movable sliding rod is provided between the fixing plate and the connecting rod. The lower end of the sliding rod is sleeved on the connecting rod, and the upper end of the sliding rod passes through the fixing plate. A first spring is provided on the fixing plate. The first spring is sleeved on the sliding rod. A first nut is threadedly connected to the top of the sliding rod, and the first spring is clamped between the first nut and the fixing plate.

[0010] Furthermore, the fixing plate has an outward-facing notch, and the top surface of the fixing plate has a first recess at the part inside the notch. A first baffle is provided in the first recess, and the first baffle is slidably connected to the slide rod. The lower end of the first spring abuts against the first baffle.

[0011] Furthermore, the bottom surface of the fixing plate is provided with a second recess below the first recess, and a second baffle is provided in the second recess. The second baffle is slidably connected to the slide rod. A second spring is provided below the second baffle. The second spring is sleeved on the slide rod. A second nut is provided below the second spring and screwed onto the slide rod. The second spring is sandwiched between the second baffle and the second nut.

[0012] Furthermore, the slide bar includes an upper pull rod and a lower pull rod. The upper pull rod is connected to a fixed plate, and the connecting rod passes through a corresponding hole on the lower pull rod. The diameter of the hole is larger than the diameter of the connecting rod. An adjusting nut is provided between the upper pull rod and the lower pull rod. Both the upper pull rod and the lower pull rod are threadedly connected to the adjusting nut. The thread direction of the connection between the upper pull rod and the adjusting nut is opposite to that of the connection between the lower pull rod and the adjusting nut.

[0013] Furthermore, a handwheel is provided on the outer side of the upright plate, and a screw for locking the position of the support frame is fixedly connected to the hub of the handwheel.

[0014] Furthermore, a lock nut for locking the first nut is screwed onto the slide rod.

[0015] Furthermore, the upright plate is provided with a vertical sliding hole, and the connecting rod is disposed through the sliding hole.

[0016] The positive effects of this utility model are:

[0017] This utility model includes a base, an upright plate, and a support frame. A connecting rod is mounted on the support frame and is vertically slidably connected to the upright plate. A fixing plate is located outside the upright plate, and a sliding rod is positioned between the fixing plate and the connecting rod. A first spring is fitted onto the sliding rod on the fixing plate, and a first nut is screwed onto the top of the sliding rod. Because the support frame and the upright plate are elastically connected by the first spring, the support frame can move under the force of the universal joint. This avoids excessive force between the universal joint and the support frame, which, after long-term operation, would lead to accelerated wear at the contact points between the support frame and the universal joint, resulting in increased noise, damage to the universal joint bearing, and decreased transmission efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external appearance of Example 1;

[0019] Figure 2 These are schematic diagrams of the external appearance of Examples 2 and 3;

[0020] Figure 3 yes Figure 2 A magnified view of a section of the central I area;

[0021] Figure 4 yes Figure 3 A cross-sectional view of the AA section;

[0022] Figure 5 yes Figure 2 View from direction B;

[0023] In the picture:

[0024] 1. Base; 2. Upright plate; 3. Support frame; 4. Handwheel; 5. First nut; 6. First washer; 7. First spring; 8. Fixing plate; 9. Sliding rod; 10. Sliding hole; 11. Connecting rod; 12. Notch; 13. Second spring; 14. Second washer; 15. Second nut; 16. Upper pull rod; 17. Adjusting nut; 18. Lower pull rod; 19. First stop plate; 20. First recess; 21. Second recess; 22. Second stop plate. Detailed Implementation

[0025] Example 1

[0026] like Figure 1As shown, an adaptive universal joint bracket includes a base 1, a pair of parallel rectangular uprights 2 fixedly connected to the top of the base 1, and a support frame 3 disposed between the two uprights 2. Two support frames 3 are arranged vertically, and each support frame 3 has a horizontal connecting rod 11 fixedly connected to both sides corresponding to the uprights 2. Each connecting rod 11 is vertically slidably connected to the corresponding upright 2. The uprights 2 have vertical sliding holes 10, and the connecting rods 11 pass through the sliding holes 10. A horizontal fixing plate 8 is welded above each connecting rod 11 on the outside of the upright plate 2. A vertical sliding rod 9 is provided between the fixing plate 8 and the corresponding connecting rod 11. The lower end of the sliding rod 9 is sleeved on the outer end of the connecting rod 11, and the upper end of the sliding rod 9 is slidably connected to the corresponding fixing plate 8. A first spring 7 is provided on the fixing plate 8. The first spring 7 is sleeved on the sliding rod 9. A first nut 5 is threadedly connected to the top of the sliding rod 9. The first spring 7 is sandwiched between the first nut 5 and the fixing plate 8. A lock nut is provided on the top of the first nut 5. The nut is threadedly connected to the sliding rod 9 to lock the position of the first nut 5.

[0027] Each support frame 3 supports a universal joint, and the two universal joints are connected to the two rollers of the rolling mill. When the universal joints rotate, they drive the corresponding rollers to rotate. The distance between the rollers is variable, thus generating a force between the universal joints and the support frame 3. Since the support frame 3 and the upright plate 2 are elastically connected by the first spring 7, the support frame 2 can move under the force of the universal joints, thereby avoiding excessive force between the universal joints and the support frame 3. This prevents excessive wear at the contact points between the support frame 3 and the universal joints after long-term operation, which would lead to increased noise, damage to the universal joint bearings, and decreased transmission efficiency.

[0028] Each upright plate 2 has a handwheel 4 on its right side corresponding to each bracket 3. A screw is fixedly connected to the hub at the center of the handwheel 4. The screw is threadedly connected to the upright plate 2. Turning the handwheel 4 so that the inner end of the screw abuts against the right side of the bracket 3 can lock the position of the bracket 3.

[0029] When the universal joint needs to be replaced, the position of the bracket 3 is locked by turning the handwheel 4, and then the universal joint is replaced. This can prevent the bracket 3 from moving upward under the action of the first spring 7 after the universal joint is removed, which would cause difficulties in the subsequent installation of the universal joint.

[0030] In addition, the bracket 3 can also swing around the connecting rod 11 to compensate for changes in the angle of the universal joint.

[0031] Example 2

[0032] Combination Figures 2 to 4As shown, the fixing plate 8 has an outward-facing notch 12. A circular first recess 20 is provided on the top surface of the fixing plate 8 near the notch 12. The diameter of the first recess 20 is larger than the width of the notch 12, and the width of the notch 12 is larger than the diameter of the sliding rod 9. A first baffle 19 is provided inside the first recess 20, and the first baffle 19 is slidably connected to the sliding rod 9. The lower end of the first spring 7 abuts against the first baffle 19. A first washer 6 is sandwiched between the first spring 7 and the first nut 5, and the first washer 6 is fitted over the sliding rod 9.

[0033] When installing the slide rod 9, the slide rod 9 can be directly inserted into the notch 12, making the installation of the slide rod 9 more convenient. After the first washer 6 is embedded in the first recess 20, the upper end of the slide rod 9 can be laterally positioned to prevent the slide rod 9 from slipping off the fixing plate 8.

[0034] The bottom surface of the fixing plate 8 is provided with a circular second recess 21 below the first recess 20. The diameter of the second recess 21 is larger than the width of the notch 12. An annular second baffle 22 is provided in the second recess 21. The second baffle 22 is slidably connected to the slide rod 9. A second spring 13 is provided below the second baffle 22. The second spring 13 is sleeved on the slide rod 9. A second nut 15 is provided below the second spring 13 and screwed on the slide rod 9. The second spring 13 is sandwiched between the second baffle 22 and the second nut 15. A second washer 14 is sandwiched between the second nut 15 and the second spring 13. The second washer 14 is sleeved on the outside of the slide rod 9. A lock nut for locking is also provided below the second nut 15.

[0035] The first spring 7 and the second spring 13 ensure that the support frame 3 is subjected to elastic force when it moves up and down, and the magnitude of the elastic force can be adjusted by the first nut 5 and the second nut 15.

[0036] Example 3

[0037] Combination Figure 5 As shown, the difference between this embodiment and Embodiment 2 is that:

[0038] The sliding rod 9 includes an upper pull rod 16 and a lower pull rod 18 arranged sequentially from top to bottom. The upper pull rod 16 is connected to the fixed plate 8. The first nut 5, the first spring 7, the first washer 6, the first baffle 19, the second baffle 22, the second spring 13, the second washer 14, and the second nut 15 are all arranged on the upper pull rod 16. The connecting rod 11 passes through a corresponding hole in the lower pull rod 18, and the diameter of the hole is larger than the diameter of the connecting rod 11. An extended adjusting nut 17 is provided between the upper pull rod 16 and the lower pull rod 18. Both the upper pull rod 16 and the lower pull rod 18 are threadedly connected to the adjusting nut 17. The thread direction of the connection between the upper pull rod 16 and the adjusting nut 17 is opposite to that of the connection between the lower pull rod 18 and the adjusting nut 17. Lock nuts for locking the position of the adjusting nut 17 are provided on the top and bottom of the adjusting nut 17.

[0039] By turning the adjusting nut 17, the distance between the upper pull rod 16 and the lower pull rod 18 can be adjusted, that is, the total length of the slide rod 9 can be adjusted, so that the support frame 3 is easier to level, the force on both sides of the support frame 3 is consistent, and the support frame 3 moves more smoothly in the upright plate 2 without jamming.

[0040] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. An adaptive universal joint bracket, comprising a base (1), a pair of parallel uprights (2) fixedly connected to the top of the base (1), and a support frame (3) disposed between the two uprights (2), characterized in that, A horizontal connecting rod (11) is fixedly connected to the side of the support frame (3) corresponding to the upright plate (2). The connecting rod (11) is vertically slidably connected to the upright plate (2). A horizontal fixing plate (8) is fixedly connected to the outside of the upright plate (2). The fixing plate (8) is located above the connecting rod (11). A vertically movable sliding rod (9) is provided between the fixing plate (8) and the connecting rod (11). The lower end of the sliding rod (9) is sleeved on the connecting rod (11). The upper end of the sliding rod (9) passes through the fixing plate (8). A first spring (7) is provided on the fixing plate (8). The first spring (7) is sleeved on the outside of the sliding rod (9). A first nut (5) is threadedly connected to the top end of the sliding rod (9). The first spring (7) is sandwiched between the first nut (5) and the fixing plate (8).

2. The adaptive universal joint bracket according to claim 1, characterized in that, The fixing plate (8) has an outward-facing notch (12). The top surface of the fixing plate (8) has a first recess (20) at the part inside the notch (12). A first baffle (19) is provided in the first recess (20). The first baffle (19) is slidably connected to the slide rod (9). The lower end of the first spring (7) abuts against the first baffle (19).

3. The adaptive universal joint bracket according to claim 2, characterized in that, The bottom surface of the fixing plate (8) is provided with a second recess (21) below the first recess (20). A second baffle (22) is provided in the second recess (21). The second baffle (22) is slidably connected to the slide rod (9). A second spring (13) is provided below the second baffle (22). The second spring (13) is sleeved on the slide rod (9). A second nut (15) is provided below the second spring (13) and screwed onto the slide rod (9). The second spring (13) is sandwiched between the second baffle (22) and the second nut (15).

4. The adaptive universal joint bracket according to claim 1, characterized in that, The slide bar (9) includes an upper pull rod (16) and a lower pull rod (18). The upper pull rod (16) is connected to the fixed plate (8). The connecting rod (11) is inserted through a hole corresponding to the lower pull rod (18). The diameter of the hole is larger than the diameter of the connecting rod (11). An adjusting nut (17) is provided between the upper pull rod (16) and the lower pull rod (18). Both the upper pull rod (16) and the lower pull rod (18) are threadedly connected to the adjusting nut (17). The thread direction of the connection between the upper pull rod (16) and the adjusting nut (17) is opposite to that of the connection between the lower pull rod (18) and the adjusting nut (17).

5. The adaptive universal joint bracket according to claim 1, characterized in that, A handwheel (4) is provided on the outside of the upright plate (2), and a screw for locking the position of the support frame (3) is fixedly connected to the hub of the handwheel (4).

6. The adaptive universal joint bracket according to claim 1, characterized in that, The slide bar (9) is screwed with a lock nut for locking the first nut (5).

7. The adaptive universal joint bracket according to claim 1, characterized in that, The upright plate (2) is provided with a vertical sliding hole (10), and the connecting rod (11) is disposed through the sliding hole (10).

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