Gate fixed wheel stop shaft device

Abstract

The utility model discloses a gate technical field's gate fixed wheel's axle stop device, including eccentric shaft, support plate, axle stop ring, tension nut. The eccentric shaft is the step shaft, sets first step surface, second step surface, third step surface, fourth step surface, fifth step surface from any one end in proper order to be respectively with first support plate, wheel, second support plate, axle stop ring, tension nut of bushing connection, support plate includes first support plate and second support plate, is used for connecting leaf structure, axle stop ring section contour and fourth step surface section contour are regular polygon, tension nut is screwed on fifth step surface, and tension nut is used for with first support plate, wheel, second support plate and axle stop ring axial locking on eccentric shaft, through axle stop ring adjustment single fixed wheel device's eccentric distance, makes all fixed wheel device satisfy the coplanarity degree requirement after, with second support plate welding axle stop ring, guarantee reliability, realize the linear continuous regulation of eccentric distance, has reduced processing capacity and precision requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gate, especially a gate fixed wheel's axle stop device. BACKGROUND

[0002] The plane fixed wheel gate is a plane gate supported by a fixed wheel, and can effectively reduce the gate opening and closing force due to small friction resistance of the fixed wheel support, and is widely used in the gate with dynamic water operation requirements. The fixed wheel device only allows the wheel to rotate around the bearing, and does not allow the fixed wheel device to drive the wheel shaft to rotate, so the fixed wheel device has a clear axle stop requirement.

[0003] At present, the commonly used fixed wheel axle stop method and device have the following two kinds:

[0004] One is to use the axle stop plate to stop the axle, which is the most common. A flat surface is machined on the wheel shaft, and the axle stop plate is fixed on the door leaf structure wheel shaft support plate after being attached to the flat surface by bolts or welding, so as to achieve the purpose of stopping the axle. This method is suitable for the fixed wheel gate with small aperture size, which only needs to arrange 4 sets of fixed wheel devices, the gate can be manufactured integrally, and the coplanarity requirement of the 4 sets of fixed wheels can be fully guaranteed; or it is suitable for the fixed wheel gate with large aperture size, which needs to arrange more than 4 sets of fixed wheel devices, but the water head is not high, the fixed wheel stress allowance is large, and the coplanarity requirement of the fixed wheel is not sensitive. After the gate is manufactured in sections and assembled into a whole on the top platform of the gate slot, there is a certain deviation in the coplanarity of all the fixed wheels arranged on the gate due to the error in the field assembly, which has a great influence on the stress of the fixed wheel, that is, the deviation of the coplanarity of the fixed wheel leads to the increase of the local stress of the fixed wheel. However, since the water head is not high, the stress of the fixed wheel itself is small, and the increase of the stress is still within the range that can be borne by the fixed wheel.

[0005] The other is to use the axle end stop plate to stop the axle, that is, to process the axle end stop plate on the end of the wheel shaft, to open a plurality of bolt holes on the axle end stop plate and the door leaf structure wheel shaft support plate corresponding to the axle end stop plate in an equal division manner, and to fix them with bolts after the adjustment of the fixed wheel, so as to achieve the purpose of stopping the axle. This method is suitable for the fixed wheel gate with large aperture size and high design water head. The stress of the fixed wheel of this kind of gate is large, the stress allowance of the fixed wheel is small, the coplanarity requirement of all the fixed wheels arranged on the gate is high, and the wheel shaft often adopts eccentric shaft. After the gate is manufactured in sections and assembled into a whole on the top platform of the gate slot, the coplanarity of the multiple sets of fixed wheels is made to meet the design requirements by rotating the eccentric shaft, and then the fixed wheels are fixed with bolts, so as to achieve the purpose of stopping the axle.

[0006] The two kinds of gate fixed wheel axle stop methods commonly used at present have the following defects:

[0007] For fixed-wheel gates that use a shaft-stopping plate, this shaft-stopping method has a simple structure, but the shaft-stopping plate can only withstand limited torque and shear force. The shaft-stopping plate is installed in a fixed position, which is not suitable for fixed-wheel gates with eccentric shaft adjustment requirements. Therefore, it is difficult to apply to fixed-wheel gates with high water head and large orifice size.

[0008] For fixed-wheel gates using end-plate stop plates, this method is relatively complex, capable of withstanding large torques and shear forces, and is suitable for almost all fixed-wheel gates. It also serves as a limit for lateral movement of the wheel axle. However, this method has the following drawbacks: First, it requires multiple bolt holes to be equally spaced on both the end-plate stop plate and the corresponding gate leaf axle support plate, resulting in a large machining workload and high precision requirements for the equally spaced bolt holes. Second, the bolt holes on the gate leaf axle support plate are internally threaded, making corrosion prevention difficult. Since gates are generally designed for a 50-year service life, repeated disassembly and reassembly of the bolts during maintenance or long-term corrosion can easily cause rust in the bolt holes. Corrosion damage poses safety hazards for subsequent maintenance and replacement of the fixed wheel; secondly, the adjustment of the wheel axle can only be carried out according to the equally spaced bolt holes, and cannot be linearly and continuously adjusted, thus failing to perfectly guarantee the requirement for coplanarity adjustment of the fixed wheel; finally, the diameter of the end plate of the shaft is generally much larger than that of the wheel axle. If it is machined as a whole with the shaft, it will greatly increase the diameter of the shaft blank material, resulting in significant waste and increased machining volume. Often, the shaft material is a relatively expensive high-strength material, and the machining of the large-diameter stepped surface is quite difficult. If the end plate of the shaft is machined separately from the wheel axle and then welded into a whole, the requirements for the welding process and the perpendicularity between the end plate of the shaft and the center of the wheel axle are also very high. Utility Model Content

[0009] To overcome the shortcomings of the prior art, the technical problems to be solved by this utility model are: how to achieve linear adjustment of the eccentricity of the fixed wheel device so as to better ensure the coplanarity requirements of multiple fixed wheels; how to improve the limited torque and shear resistance that the stop shaft plate can withstand in the prior art, the large amount of machining required for the bolt holes of the stop shaft plate with bolts; and how to eliminate the safety hazards of the fixed wheels caused by the difficulty in corrosion prevention and maintenance of the bolt holes of the stop shaft in the prior art.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] The shaft-stopping device of the gate fixed wheel comprises an eccentric shaft, a supporting plate, a shaft-stopping ring and a tension nut, the eccentric shaft is a stepped shaft, and comprises a first stepped surface, a second stepped surface, a third stepped surface, a fourth stepped surface and a fifth stepped surface from any end, the first stepped surface, the second stepped surface, the third stepped surface, the fourth stepped surface and the fifth stepped surface are respectively sleeved with a first supporting plate, a bearing, a second supporting plate, a shaft-stopping ring and a tension nut, the supporting plate comprises the first supporting plate and the second supporting plate, and is used for connecting a leaf structure, the inner cross section profile of the shaft-stopping ring is a regular polygon, preferably a square, and the outer cross section profile is preferably the same as the inner cross section profile, and the tension nut is in threaded connection with the fifth stepped surface, and is used for axially locking the first supporting plate, the wheel and the bearing, the second supporting plate and the shaft-stopping ring on the eccentric shaft.

[0012] Further, the eccentric shaft is provided with an eccentric distance at the second stepped surface, the eccentric distance is 5 mm, and the first stepped surface, the third stepped surface, the fourth stepped surface and the fifth stepped surface are concentric shaft structures.

[0013] Further, the fourth stepped surface is a regular polygon, preferably a square, which matches the inner cross section profile of the shaft-stopping ring.

[0014] Further, the fifth stepped surface is provided with a limiting pin hole, the limiting pin hole is used for inserting a limiting pin to limit the tension nut and prevent the tension nut from loosening.

[0015] Further, a loosening prevention washer is clamped between the tension nut and the shaft-stopping ring.

[0016] Further, a plurality of sawteeth are arranged on the outer edge of the tension nut away from the shaft-stopping ring, the sawteeth are used for inserting the limiting pin to prevent the tension nut from loosening.

[0017] Further, the thickness dimension of the second supporting plate is greater than the length dimension of the third stepped surface.

[0018] Further, the length dimension of the fourth stepped surface is the same as the thickness dimension of the shaft-stopping ring.

[0019] Further, the fourth stepped surface and the inner surface of the shaft-stopping ring are in clearance fit.

[0020] Further, a first blocking ring is clamped between the first supporting plate and the wheel, and a second blocking ring is clamped between the second supporting plate and the wheel.

[0021] The beneficial effects of the utility model are as follows:

[0022] The eccentricity is adjusted by matching the stop shaft ring of regular polygon with the fourth step surface of regular polygon, the stop shaft ring and the second supporting plate are welded and fixed on site after the eccentricity is adjusted, so that the radial stop shaft of the wheel shaft is realized, the linear adjustment of the eccentricity of the fixed wheel device is realized, so that the coplanarity requirement of the multiple fixed wheels is better ensured, meanwhile, the tension nut is tightened, the transverse movement of the eccentric shaft is prevented, so that the axial stop shaft of the wheel shaft is realized, by arranging the eccentric shaft, the stop shaft ring, the tension nut and other components, the reliability is ensured, the linear continuous adjustment of the eccentricity is realized, the machining requirement and the waste of wheel shaft material are greatly reduced, the bolt hole is not needed to be machined in the structure, the machining cost and the machining difficulty are reduced, and the safety hidden danger of the post-operation maintenance of the conventional stop shaft device is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structural schematic diagram of the utility model;

[0024] Figure 2 is the main view schematic diagram of the eccentric shaft of the utility model;

[0025] Figure 3 is the right view schematic diagram of the eccentric shaft of the utility model;

[0026] Figure 4 is the sectional schematic diagram of the stop shaft ring of the utility model;

[0027] In the drawing, 1 is an eccentric shaft, 2 is a first step surface, 3 is a second step surface, 4 is a third step surface, 5 is a fourth step surface, 6 is a fifth step surface, 7 is a limiting pin hole, 8 is a first supporting plate, 9 is a wheel, 10 is a bearing, 11 is a stop shaft ring, 12 is a second supporting plate, 13 is a tension nut, 14 is an anti-loosening washer, 15 is a sawtooth, 16 is a first blocking ring and 17 is a second blocking ring. DETAILED DESCRIPTION

[0028] The utility model is further described below in combination with the drawings.

[0029] According to Figures 1-4As shown, the embodiment of the application proposes a shaft stopping device of a gate fixed wheel, which comprises an eccentric shaft 1, the eccentric shaft 1 is a stepped shaft, the eccentric shaft 1 comprises a first stepped surface 2, a second stepped surface 3, a third stepped surface 4, a fourth stepped surface 5 and a fifth stepped surface 6 in sequence from any end, the first stepped surface 2, the second stepped surface 3, the third stepped surface 4, the fourth stepped surface 5 and the fifth stepped surface 6 are respectively sleeved with a first supporting plate 8, a wheel 9, a second supporting plate 12, a shaft stopping ring 11 and a tension nut 13; the first supporting plate 8 and the second supporting plate 12 are both used for connecting a leaf structure; the wheel 9 and the second stepped surface 3 are provided with a bearing 10 therebetween; the shaft stopping ring 11 is a regular polygon in cross section, preferably a square, the fourth stepped surface 5 is a regular polygon in cross section which matches the inner cross section of the shaft stopping ring 11; the tension nut 13 is screwed on the fifth stepped surface 6, and is used for axially locking the first supporting plate 8, the wheel 9, the second supporting plate 12 and the shaft stopping ring 11 on the eccentric shaft 1.

[0030] First of all, it needs to be pointed out that the cooperation of the shaft stopping ring 11 and the fourth stepped surface 5 in the polygon is used to adjust the eccentricity, and after the eccentricity is adjusted, the outer edge of the shaft stopping ring 11 and the second supporting plate 12 are welded and fixed on site, so as to realize the radial stopping of the wheel shaft, at the same time, the tension nut 13 is tightened and fixed, so as to prevent the eccentric shaft 1 from moving transversely, thereby realizing the axial stopping of the wheel shaft. By arranging the eccentric shaft 1, the shaft stopping ring 11, the tension nut 13 and other components, the reliability is ensured, the linear continuous adjustment of the eccentricity is realized, the machining requirements are greatly reduced, the waste of wheel shaft materials is greatly reduced, and the hidden troubles of the conventional shaft stopping device in the later operation and maintenance are eliminated.

[0031] The first stepped surface 2 and the third stepped surface 4 are respectively provided with the first supporting plate 8 and the second supporting plate 12, the first supporting plate 8 and the second supporting plate 12 are respectively fixedly connected with the leaf structure, the first supporting plate 8 and the second supporting plate 12 are square or circular steel plates, the center is processed with a corresponding circular hole to the first supporting surface and the second supporting surface, and the outer edge is welded with the leaf structure, so as to transmit the torque of the fixed wheel device corresponding to the eccentric shaft 1 to the leaf structure; when the fixed wheel works, the first stepped surface 2 and the third stepped surface 4 transmit the shaft torque to the first supporting plate 8 and the second supporting plate 12, and then to the leaf structure, so as to realize the stable work of the gate; the second stepped surface 3 is provided with the wheel 9, the wheel 9 rotates around the eccentric shaft 1 through the bearing 10, and transmits the torque to the eccentric shaft 1. Moreover, the first supporting plate 8 and the wheel 9 are clamped with the first blocking ring 16, and the second supporting plate 12 and the wheel 9 are clamped with the second blocking ring 17, so as to ensure the stability of the cooperation of the first supporting plate 8, the second supporting plate 12 and the wheel 9.

[0032] The eccentric shaft 1 is eccentrically arranged at the second step surface 3, and the first step surface 2, the third step surface 4, the fourth step surface 5 and the fifth step surface 6 are concentrically arranged. In this embodiment, the eccentricity is 5 mm. The cross section of the shaft ring 11 and the fourth step surface 5 is square. The shaft ring 11 transmits the radial torque of the eccentric shaft 1 to the second supporting plate 12, so as to realize the radial shaft fixing of the fixed wheel device.

[0033] The fifth step surface 6 is provided with a limiting pin hole 7. The limiting pin hole 7 is used for inserting a limiting pin to limit the tension nut 13. The limiting pin hole 7 is matched with the limiting pin to limit the tension nut 13 on the fifth step surface 6, so as to prevent the tension nut 13 from loosening. Further, in order to further limit and fix the tension nut 13, a plurality of sawteeth 15 are arranged on the outer edge of the tension nut 13 away from the shaft ring 11. The sawteeth 15 are used for inserting the limiting pin to prevent the tension nut 13 from loosening. The anti-loosening washer 14 is arranged between the tension nut 13 and the shaft ring 11, so as to ensure that the first supporting plate 8, the wheel 9, the second supporting plate 12 and the shaft ring 11 can be axially locked on the eccentric shaft 1, and the relative movement does not occur, so as to realize the axial shaft fixing of the fixed wheel device.

[0034] The thickness of the second supporting plate 12 is slightly larger than the length of the third step surface 4. The size difference is preferably 1 mm-3 mm.

[0035] The length of the fourth step surface 5 is the same as the thickness of the shaft ring 11. Since the thickness of the second supporting plate 12 is slightly larger than the length of the third step surface 4, the shaft ring 11 can be stably abutted on the second supporting plate 12 after the shaft ring 11 is matched with the fourth step surface 5. The anti-loosening washer 14 of the tension nut 13 can be stably abutted on the shaft ring 11, and the influence and interference do not occur.

[0036] The fourth step surface 5 and the shaft ring 11 are gap matched, that is, the side length of the inner hole of the shaft ring 11 is slightly smaller than the side length of the fourth step surface 5. Meanwhile, the fourth step surface 5 is chamfered, so as to facilitate the stable sleeving of the shaft ring 11 on the fourth step surface 5 in the installation process.

[0037] After the eccentricity of the fixed wheel is adjusted to make all the fixed wheels of the whole gate meet the coplanarity requirement, the outer edge of the shaft ring 11 and the second supporting plate 12 are welded and fixed on site.

[0038] In summary, the application embodiment proposes a shaft stopping device of the gate fixed wheel, which can realize linear continuous adjustment of the wheel shaft eccentricity, overcomes the shortcomings that the current shaft stopping method cannot be linearly and continuously adjusted, has a simple structure, does not use the traditional equal division bolt hole to adjust the eccentricity and fix the wheel shaft transversely, has small processing amount, avoids the requirement that the traditional shaft stopping method needs to be processed on the eccentric shaft and the leaf structure support plate at the same time, effectively reduces the processing difficulty, the method has no built-in bolt hole, effectively avoids the safety hidden danger that the bolt hole corrosion damage of the traditional shaft stopping method brings to the later fixed wheel device operation and maintenance, the method avoids the waste of the wheel shaft material, reduces the processing amount and the processing precision requirement of the eccentric shaft, and saves the processing cost.

Claims

1. A shaft-stopping device for a gate guide wheel, characterized in that The eccentric shaft (1) is a stepped shaft, which comprises, in sequence from either end, a first stepped surface (2), a second stepped surface (3), a third stepped surface (4), a fourth stepped surface (5), and a fifth stepped surface (6), and the first stepped surface (2), the second stepped surface (3), the third stepped surface (4), the fourth stepped surface (5), and the fifth stepped surface (6) are respectively sleeved with a first supporting plate (8), a wheel (9), a second supporting plate (12), a shaft collar (11), and a tension nut (13); the first supporting plate (8) and the second supporting plate (12) are used for connecting a door leaf structure; a bearing (10) is arranged between the wheel (9) and the second stepped surface (3); the shaft collar (11) has a cross-sectional profile of a regular polygon, and the fourth stepped surface (5) has a cross-sectional profile of a regular polygon matching the shaft collar (11); the tension nut (13) is threadedly connected to the fifth stepped surface (6), and the tension nut (13) is used for axially locking the first supporting plate (8), the wheel (9), the second supporting plate (12), and the shaft collar (11) on the eccentric shaft (1).

2. The shaft stopping device of the gate guide wheel according to claim 1, characterized by The eccentric shaft (1) is provided with an eccentricity at the second stepped surface (3), and the eccentricity is 5 mm; the first stepped surface (2), the third stepped surface (4), the fourth stepped surface (5), and the fifth stepped surface (6) are concentric shaft structures.

3. The shaft stopping device of the gate guide wheel according to claim 1, wherein The cross-sectional profile of the shaft collar (11) and the cross-sectional profile of the fourth stepped surface (5) are square.

4. The shaft stopping device of the gate guide wheel according to claim 1, wherein The fifth stepped surface (6) is provided with a limiting pin hole (7) for limiting the tension nut (13) by inserting a limiting pin.

5. The shaft stopping device of the gate guide wheel according to claim 4, wherein A lock washer (14) is clamped between the tension nut (13) and the shaft collar (11).

6. The shaft stopping device of the gate guide wheel according to claim 5, wherein A plurality of sawteeth (15) are arranged along the outer edge of the tension nut (13) at the end of the tension nut (13) away from the shaft collar (11), and the sawteeth (15) are used for inserting a limiting pin.

7. The shaft stopping device of the gate guide wheel according to claim 1, wherein The thickness dimension of the second supporting plate (12) is greater than the length dimension of the third stepped surface (4), and the size difference is in the range of 1 mm-3 mm.

8. The shaft stopping device of the gate guide wheel according to claim 7, characterized by The length dimension of the fourth stepped surface (5) is the same as the thickness dimension of the shaft collar (11).

9. The shaft stopping device of the gate guide wheel according to claim 8, wherein The fourth stepped surface (5) and the shaft collar (11) are clearance fit.

10. The shaft stopping device of the gate guide wheel according to claim 1, wherein A first stop ring (16) is clamped between the first supporting plate (8) and the wheel (9), and a second stop ring (17) is clamped between the second supporting plate (12) and the wheel (9).

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