Shaft stopping device of gate fixed wheel

Abstract

The invention discloses a shaft stopping device of a gate fixed wheel in the technical field of gates. The shaft stopping device comprises an eccentric shaft, a supporting plate, a shaft stopping ring and a tensioning nut. The eccentric shaft is a step shaft, is sequentially provided with a first step surface, a second step surface, a third step surface, a fourth step surface and a fifth step surface from any end, and is respectively sleeved with a first supporting plate, a wheel, a second supporting plate, a shaft stopping ring and a tightening nut; the supporting plate comprises a first supporting plate body and a second supporting plate body and is used for being connected with the gate leaf structure. The section contour of the shaft stopping ring and the section contour of the fourth step surface are regular polygons; the tightening nut is in threaded fit with the fifth step surface and is used for axially locking the first supporting plate, the wheel, the second supporting plate and the shaft stopping ring on the eccentric shaft; the eccentric distance of the single fixed wheel device is adjusted through the shaft stopping ring, after all the fixed wheel devices meet the coplanarity requirement, the shaft stopping ring is welded to the second bearing plate, reliability is guaranteed, linear continuous adjustment of the eccentric distance is achieved, and the machining amount and the precision requirement are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gates, and in particular to an axle-stopping device for a fixed wheel of a gate. Background Art

[0002] Plane fixed wheel gates are plane gates that use fixed wheel supports. Because the fixed wheel supports have low friction resistance, they can effectively reduce the gate opening and closing force. They are widely used in gates 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. Therefore, there are clear requirements for the fixed wheel device to stop the shaft.

[0003] There are two commonly used fixed wheel and shaft stopping methods and devices:

[0004] One is to use a stop plate to stop the shaft, which is the most common method. A plane is machined on the axle, and the stop plate is fitted to the plane and then fixed to the axle support plate of the gate structure by bolts or welding, so as to achieve the purpose of stopping the shaft. This method is suitable for fixed-wheel gates with small opening sizes and only need to arrange 4 sets of fixed-wheel devices. The gate can be manufactured as a whole, which can fully guarantee the coplanarity requirements of the 4 sets of fixed wheels; or it is suitable for fixed-wheel gates that are not sensitive to the coplanarity requirements of the fixed wheels, although the gate opening size is large and more than 4 sets of fixed-wheel devices need to be arranged, but the water head is not high, the force surplus of the fixed wheels is large, and the fixed-wheel gates are not sensitive to the coplanarity requirements of the fixed wheels. After this type of gate is manufactured in sections, it is assembled into a whole on the top platform of the gate slot. Due to the errors in on-site assembly, there is a certain deviation in the coplanarity of all the fixed wheels set by the gate, which has a great influence on the force of the fixed wheels, that is, the deviation in the coplanarity of the fixed wheels leads to an increase in the force of the local fixed wheels, but because the water head is not high, the force of the fixed wheels themselves is small, and the increased force is still within the tolerable range of the fixed wheels.

[0005] The other method is to use an end stop plate to stop the shaft. The end stop plate is machined at the end of the wheel shaft, and multiple bolt holes are opened in an evenly divided manner on the end stop plate and the wheel shaft support plate of the gate structure corresponding to the end stop plate. After the fixed wheel is adjusted, it is fixed with bolts to achieve the purpose of stopping the shaft. This method is suitable for fixed wheel gates with large orifice sizes and high design water heads. The fixed wheels of this type of gates are subjected to greater force, and the force surplus of the fixed wheels is small. The coplanarity requirements of all fixed wheels set in the gate are high. The wheel shaft often uses an eccentric shaft. After the gate is manufactured in sections, it is assembled into a whole on the top platform of the gate slot. By rotating the eccentric shaft, the coplanarity of multiple sets of fixed wheels meets the design requirements, and then it is fixed with bolts to achieve the purpose of stopping the shaft.

[0006] The two commonly used gate fixed wheel and shaft stopping methods currently have the following defects:

[0007] For fixed-wheel gates that use a stop plate to stop the shaft, this type of stop has a simple structure, but the stop plate can only withstand limited torque and shear force. The stop plate is installed in a fixed position and is not suitable for fixed wheels that require eccentric shaft adjustment. Therefore, it is difficult to apply to fixed-wheel gates with high water heads and large orifice sizes.

[0008] For the fixed-wheel gate that uses the shaft end stop plate to stop the shaft, this shaft stopping method is relatively complex, can withstand large torque and shear resistance, and is suitable for almost all fixed-wheel gates. It also serves as a limit for the lateral movement of the wheel axle. However, this method has the following defects. First, it is necessary to open multiple bolt holes in an equally divided manner on the shaft end stop plate and the gate leaf structure wheel axle support plate corresponding to the stop plate. The processing workload is large and the processing accuracy requirements for the equally divided bolt holes are high. Secondly, the bolt holes on the gate leaf structure wheel axle support plate are built-in threaded holes, which are not easy to prevent corrosion. The gate is generally designed to have a service life of 50 years. The bolts are disassembled and installed many times during maintenance of the fixed wheel or the bolt holes are prone to rust due to long-term corrosion. The corrosion damage will bring potential safety hazards to the subsequent maintenance and replacement of the fixed wheel; secondly, the adjustment of the wheel axle can only be carried out according to the equally divided bolt hole positions, and linear continuous adjustment cannot be performed, which cannot perfectly guarantee the need for coplanarity adjustment of the fixed wheel; finally, the diameter of the shaft end stop plate is generally much larger than the wheel axle. If it is processed as a whole with the shaft, the diameter of the shaft blank material will be greatly increased, resulting in great waste and increased processing volume. The shaft material is often a relatively expensive high-strength material, and the large variable diameter step surface is difficult to process. If the shaft end stop plate and the wheel axle are processed separately and then welded into a whole, the welding process and the verticality of the shaft end stop plate and the center of the wheel axle will be required to be high. Summary of the invention

[0009] In order to overcome the shortcomings of the prior art, the technical problems to be solved by the present invention are: how to realize the linear adjustment of the eccentricity of the fixed wheel device so as to better ensure the coplanarity requirements of multiple sets of fixed wheels, how to improve the problems that the torque and shear resistance that the stop shaft plate can withstand in the prior art are limited, and the bolt hole processing amount for setting the bolt to fix the stop shaft plate is large, and how to eliminate the safety hazards of the fixed wheel caused by the difficulty in corrosion protection and maintenance of the stop shaft bolt holes in the prior art.

[0010] The technical solution adopted by the present invention to solve its technical problem is:

[0011] The shaft-stopping device of the fixed wheel of the gate includes an eccentric shaft, a support plate, a shaft-stopping ring, and a tensioning nut. The above-mentioned eccentric shaft is a stepped shaft, which includes the first step surface, the second step surface, the third step surface, the fourth step surface, and the fifth step surface in sequence from either end, and the above-mentioned first step surface, the above-mentioned second step surface, the above-mentioned third step surface, the above-mentioned fourth step surface, and the above-mentioned fifth step surface are respectively sleeved with the first support plate, the bearing, the second support plate, the shaft-stopping ring, and the tensioning nut; the above-mentioned support plate includes the first support plate and the second support plate, both of which are used to connect the gate leaf structure; the inner cross-sectional profile of the above-mentioned shaft-stopping ring is a regular polygon, preferably a square, and the outer cross-sectional profile is preferably the same as the inner cross-sectional profile; the above-mentioned tensioning nut is threadedly matched with the above-mentioned fifth step surface, and the above-mentioned tensioning nut is used to axially lock the above-mentioned first support plate, the above-mentioned wheel and bearing, the above-mentioned second support plate, and the above-mentioned shaft-stopping ring on the above-mentioned eccentric shaft.

[0012] Furthermore, the eccentric shaft is provided with an eccentricity on the second step surface, and the eccentricity is 5 mm, and the remaining first step surface, the third step surface, the fourth step surface and the fifth step surface are coaxial shaft structures.

[0013] Furthermore, the cross-sectional profile of the fourth step surface is a regular polygon matching the inner cross-sectional profile of the stop ring, and is preferably a square.

[0014] Furthermore, the fifth step surface is provided with a limit pin hole, and the limit pin hole is used to insert a limit pin to limit the tensioning nut to prevent the tensioning nut from loosening.

[0015] Furthermore, an anti-loosening gasket is clamped between the tightening nut and the stop ring.

[0016] Furthermore, a plurality of serrations are arranged along the periphery of the outer edge of the tightening nut at one end of the tightening nut away from the stop ring, and the serrations are used for inserting a limit pin to prevent the tightening nut from loosening.

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

[0018] Furthermore, the length dimension of the fourth step surface is the same as the thickness dimension of the stop ring.

[0019] Furthermore, the fit between the fourth step surface and the inner surface of the stop ring is a clearance fit.

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

[0021] The beneficial effects of the present invention are:

[0022] The eccentricity is adjusted by using a regular polygonal stop ring and a regular polygonal fourth step surface. After the eccentricity is adjusted, the stop ring and the second bearing plate are welded and fixed on site, thereby realizing radial stop of the wheel axle, and linear adjustment of the eccentricity of the fixed wheel device can better ensure the coplanarity requirements of multiple sets of fixed wheels; at the same time, the tightening nut is tightened to prevent the eccentric shaft from lateral movement, thereby realizing axial stop of the wheel axle. By arranging components such as the eccentric shaft, the stop ring, and the tightening nut, reliability is guaranteed, and linear continuous adjustment of the eccentricity is realized, while greatly reducing processing requirements and waste of wheel axle materials. In addition, the structure does not require processing of bolt holes, thereby reducing processing costs and difficulty, and eliminating safety hazards in the later operation and maintenance of conventional stop devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the front view of the eccentric shaft of the present invention;

[0025] Figure 3 It is a right side schematic diagram of the eccentric shaft of the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of the shaft stop ring of the present invention;

[0027] Marked in the figure are, 1-eccentric shaft, 2-first step surface, 3-second step surface, 4-third step surface, 5-fourth step surface, 6-fifth step surface, 7-limit pin hole, 8-first support plate, 9-wheel, 10-bearing, 11-stop ring, 12-second support plate, 13-tensioning nut, 14-anti-loosening gasket, 15-serration, 16-first retaining ring, 17-second retaining ring. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings.

[0029] according to Figure 1-Figure 4As shown, the embodiment of the present application proposes a shaft-stopping device for a gate fixed wheel, comprising an eccentric shaft 1, wherein the eccentric shaft 1 is a stepped shaft, wherein the eccentric shaft 1 includes, starting 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 in sequence, wherein 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 tightening nut 13; the first supporting Plate 8 and the above-mentioned second supporting plate 12 are both used to connect the door leaf structure; a bearing 10 is arranged between the above-mentioned wheel 9 and the above-mentioned second step surface 3; the cross-sectional profile of the above-mentioned stop shaft ring 11 is a regular polygon, preferably a square, and the cross-sectional profile of the above-mentioned fourth step surface 5 is a regular polygon matching the inner cross-sectional profile of the above-mentioned stop shaft ring 11; the above-mentioned tightening nut 13 is threadedly engaged with the above-mentioned fifth step surface 6, and the above-mentioned tightening nut 13 is used to axially lock the above-mentioned first supporting plate 8, the above-mentioned wheel 9, the above-mentioned second supporting plate 12 and the above-mentioned stop shaft ring 11 on the above-mentioned eccentric shaft 1.

[0030] First of all, it should be stated that the eccentricity is adjusted by using a polygonal stop ring 11 and a polygonal fourth step surface 5 to cooperate with each other. After the eccentricity is adjusted, the outer edge of the stop ring 11 and the second support plate 12 are welded and fixed on site to achieve radial stop of the axle. At the same time, the tightening nut 13 is tightened to prevent the eccentric shaft 1 from lateral movement, thereby achieving axial stop of the axle. By arranging components such as the eccentric shaft 1, the stop ring 11, and the tightening nut 13, reliability is guaranteed and linear continuous adjustment of the eccentricity is achieved, while greatly reducing processing requirements and waste of axle materials, and eliminating the hidden dangers of later operation and maintenance of conventional stop devices.

[0031] The first step surface 2 and the third step surface 4 are respectively installed with a first support plate 8 and a second support plate 12, and the first support plate 8 and the second support plate 12 are respectively fixedly connected to the gate leaf structure. The first support plate 8 and the second support plate 12 are square or circular steel plates, and the center is processed with a circular hole corresponding to the first support surface and the second support surface, and the outer edge is welded to the gate leaf structure to transfer the torque of the fixed wheel device corresponding to the eccentric shaft 1 to the gate leaf structure; when the fixed wheel is working, the first step surface 2 and the third step surface 4 transfer the shaft torque to the first support plate 8 and the second support plate 12, and transfer it to the gate leaf structure to realize the stable operation of the gate; the second step surface 3 is installed with a wheel 9, and the wheel 9 rotates around the eccentric shaft 1 through the bearing 10 to transfer the torque to the eccentric shaft 1. Moreover, a first retaining ring 16 is clamped between the first support plate 8 and the wheel 9, and a second retaining ring 17 is clamped between the second support plate 12 and the wheel 9. The first retaining ring 16 and the second retaining ring 17 ensure the stability of the cooperation between the first support plate 8 and the second support plate 12 and the wheel 9.

[0032] The above-mentioned eccentric shaft 1 is set with an eccentricity on the second step surface 3, and the remaining first step surface 2, third step surface 4, fourth step surface 5 and fifth step surface 6 are concentric shaft structures. In this embodiment, the eccentricity is 5 mm, and the cross-sectional shape of the above-mentioned stop ring 11 and the fourth step surface 5 is square. The stop ring 11 transmits the radial torque of the eccentric shaft 1 to the second support plate 12, thereby achieving the purpose of radial stopping of the fixed wheel device.

[0033] The fifth step surface 6 is provided with a limit pin hole 7, and the limit pin hole 7 is used to insert a limit pin to limit the tightening nut 13. The tightening nut 13 is limited on the fifth step surface 6 by a positioning pin matched with the limit pin hole 7 to prevent the tightening nut 13 from loosening. Furthermore, in order to further achieve the limiting and fixing effect on the tightening nut 13, the end of the tightening nut 13 away from the stop shaft ring 11 is provided with a plurality of serrations 15 along the outer edge of the tightening nut 13. The serrations 15 are used to insert the limit pin to prevent the tightening nut 13 from loosening. At the same time, an anti-loosening gasket 14 is clamped between the tightening nut 13 and the stop shaft ring 11 to ensure that the tightening nut 13 can axially lock the first supporting plate 8, the wheel 9, the second supporting plate 12 and the stop shaft ring 11 on the eccentric shaft 1 without relative stringing, thereby achieving the purpose of axial shaft stopping of the fixed wheel device.

[0034] The thickness dimension of the second supporting plate 12 is slightly greater than the length dimension of the third step surface 4, and the dimension difference range is preferably 1 mm-3 mm.

[0035] The length dimension of the above-mentioned fourth step surface 5 is the same as the thickness dimension of the above-mentioned stop ring 11. Since the thickness dimension of the above-mentioned second supporting plate 12 is slightly larger than the length dimension of the above-mentioned third step surface 4, it can be ensured that after the stop ring 11 and the fourth step surface 5 are matched, the stop ring 11 can stably abut against the second supporting plate 12, and the anti-loosening gasket 14 that pulls the nut 13 closer can stably abut against the stop ring 11 without causing any influence or interference.

[0036] The fourth step surface 5 and the stop ring 11 are clearance-fitted, that is, the side length of the inner hole of the stop ring 11 is slightly smaller than the side length of the fourth step surface 5. At the same time, the fourth step surface 5 is chamfered to facilitate the stable insertion of the stop ring 11 onto the fourth step surface 5 during installation.

[0037] After adjusting the eccentricity of the fixed wheels so that all the fixed wheels of the entire gate meet the coplanarity requirement, it is necessary to weld and fix the outer edge of the shaft stop ring 11 and the second supporting plate 12 on site.

[0038] In summary, the embodiment of the present application proposes a shaft stopping device for the fixed wheel of the gate, which can realize linear and continuous adjustment of the eccentricity of the wheel axle, overcomes the shortcoming that the currently used shaft stopping method cannot be linearly and continuously adjusted, has a simple structure, does not adopt the traditional equally divided bolt holes for eccentricity adjustment and transverse fixation of the wheel axle, has a small processing amount, avoids the requirement that the traditional shaft stopping method needs to perform processing on the eccentric shaft and the gate leaf structure support plate at the same time, and effectively reduces the processing difficulty. This method has no built-in bolt holes, effectively avoiding the safety hazards caused by rust and damage of the bolt holes in the traditional shaft stopping method to the subsequent operation and maintenance of the fixed wheel device. This method avoids the waste of wheel axle materials, reduces the processing amount of the eccentric shaft and the requirements for processing accuracy, and saves processing costs.

Claims

1. The shaft-stopping device of the gate fixed wheel is characterized in that: The invention comprises an eccentric shaft (1), wherein the eccentric shaft (1) is a stepped shaft, and wherein the eccentric shaft (1) comprises, starting 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), wherein 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 stop ring (11) and a tightening nut (13); the first supporting plate (8) and the second support plate (12) are both used to connect the door leaf structure; a bearing (10) is arranged between the wheel (9) and the second step surface (3); the cross-sectional profile of the stop ring (11) is a regular polygon, and the cross-sectional profile of the fourth step surface (5) is a regular polygon matching the stop ring (11); the tightening nut (13) is threadedly engaged with the fifth step surface (6), and the tightening nut (13) is used to axially lock the first support plate (8), the wheel (9), the second support plate (12) and the stop ring (11) on the eccentric shaft (1).

2. The shaft-stopping device for the fixed wheel of a gate according to claim 1, characterized in that: The eccentric shaft (1) is provided with an eccentricity on the second step surface (3), and the eccentricity is 5 mm. The first step surface (2), the third step surface (4), the fourth step surface (5) and the fifth step surface (6) are coaxial shaft structures.

3. The shaft-stopping device for the fixed wheel of a gate according to claim 1, characterized in that: The cross-sectional profile of the shaft-stopping ring (11) and the cross-sectional profile of the fourth step surface (5) are described as squares.

4. The shaft-stopping device for the fixed wheel of a gate according to claim 1, characterized in that: The fifth step surface (6) is provided with a limit pin hole (7), and the limit pin hole (7) is used to insert a limit pin to limit the tightening nut (13).

5. The shaft-stopping device for the fixed wheel of a gate according to claim 4, characterized in that: An anti-loosening gasket (14) is clamped between the tightening nut (13) and the shaft stop ring (11).

6. The shaft-stopping device for the fixed wheel of a gate according to claim 5, characterized in that: A plurality of saw teeth (15) are arranged along the periphery of the outer edge of the tightening nut (13) at one end of the tightening nut (13) away from the stop ring (11), and the saw teeth (15) are used for inserting a limit pin.

7. The shaft-stopping device for the fixed wheel of a gate according to claim 1, characterized in that: The thickness dimension of the second supporting plate (12) is greater than the length dimension of the third step surface (4), and the dimension difference ranges from 1 mm to 3 mm.

8. The shaft-stopping device for the fixed wheel of a gate according to claim 7, characterized in that: The length dimension of the fourth step surface (5) is the same as the thickness dimension of the shaft stop ring (11).

9. The shaft-stopping device for the fixed wheel of a gate according to claim 8, characterized in that: The fourth step surface (5) and the stop ring (11) are clearance-fitted.

10. The shaft-stopping device for the fixed wheel of a gate according to claim 1, characterized in that: A first retaining ring (16) is clamped between the first supporting plate (8) and the wheel (9), and a second retaining ring (17) is clamped between the second supporting plate (12) and the wheel (9).

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