A friction pair of bottom pivot of miter gate

Abstract

The invention discloses a novel friction pair of the bottom pivot of a miter gate in the field of gate technology. The friction pair comprises a base plate, a bearing nest and a support. The support is arranged on the upper end surface of the bearing nest. The bearing nest is located above the base plate. A bearing shell is arranged inside the bearing nest. A mushroom head is arranged inside the bearing shell. A mounting mechanism is arranged between the bearing nest and the bearing shell. The mounting mechanism comprises a hinge, a connecting rod and a buckle rod. There are several connecting rods. The connecting rod is connected to the bearing nest through a hinge. The buckle rod is fixedly connected to one side of the connecting rod. The buckle rod is arc-shaped and inserted into the bearing nest and the bearing shell. A moving mechanism is arranged between two adjacent connecting rods. The moving mechanism comprises a contact rod 1, a contact rod 2, an arc rod and a connecting ball. The arc rod is fixedly connected to one side of the contact rod 1. It does not need to be fixed individually and can be started simultaneously. The fixing operation between the bearing nest and the bearing shell is quick and effective.

Description

Technical Field

[0001] The invention relates to the technical field of gates, in particular to a novel friction pair of bottom pivots of a miter gate. Background Art

[0002] The miter gate is the most widely used gate type for ship locks due to its simple force bearing and flexible operation. In a busy waterway, the ship lock can open and close the gate about 20,000 times per year under normal operation. The bottom pivot of the miter gate adopts a ball bearing structure. The sliding friction pair composed of a mushroom head and a bearing is the only support for the bottom of the miter gate when the gate is rotating. It is an important component to ensure the normal opening and closing of the gate. It is also the most complex component of the miter gate structure and has relatively more failures.

[0003] The existing miter gate bottom pivot friction pair cannot quickly limit the position between the bearing shaft nest and the bearing shell during use, and the operation is not convenient. At the same time, the fixation of the mushroom head mostly requires position limitation one by one. The operation process is complicated, and it is difficult to effectively improve the operating efficiency of the staff. There are disadvantages in use. Based on this, the present invention designs a new miter gate bottom pivot friction pair to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of friction pair of the bottom pivot of a miter gate to solve the problem proposed in the above background technology that the position between the bearing nest and the bearing shell cannot be quickly limited during use, the operation is not convenient, and the fixation of the mushroom head mostly requires position limitation one by one. The operation process is complicated and it is difficult to effectively improve the operating efficiency of the staff.

[0005] To achieve the above object, the present invention provides the following technical solutions: a novel friction pair of the bottom pivot of a miter gate, comprising a base plate, a bearing nest and a support, wherein the support is arranged on the upper end surface of the bearing nest, the bearing nest is located above the base plate, a bearing bush is arranged inside the bearing nest, a mushroom head is arranged inside the bearing bush, and a mounting mechanism is arranged between the bearing nest and the bearing bush;

[0006] The mounting mechanism includes a hinge, a connecting rod and a buckle rod. There are several connecting rods. The connecting rod is connected to the bearing nest through a hinge. The buckle rod is fixedly connected to one side of the connecting rod. The buckle rod is arc-shaped and inserted into the inside of the bearing nest and the bearing shell. A moving mechanism is arranged between two adjacent connecting rods. The moving mechanism includes contact rod one, contact rod two, an arc rod and a connecting ball. The arc rod is fixedly connected to one side of contact rod one, and the connecting ball is fixedly connected to an end face of the arc rod away from contact rod one. The arc rod and the connecting ball are both slidably inserted into the inside of contact rod two.

[0007] Preferably, a limiting mechanism is provided inside the substrate, and the limiting mechanism includes a moving block, a damping spring, a limiting rod, a fixing rod, a groove, a cam, a shaft and a handle. The groove is opened inside the substrate near the upper end, and the fixing rod is fixedly connected inside the groove.

[0008] Preferably, the limiting rod is located at the lower end of the fixed rod, and the limiting rod and the fixed rod are in sliding contact, the upper end of the limiting rod is clamped with the mushroom head, and an elastic hinge is arranged between the lower end of the limiting rod and the moving block, the number of the limiting rods is two, and the moving block is arranged opposite to each other.

[0009] Preferably, the damping spring is located on the upper end surface of the moving block, and the damping spring is always in a compressed state.

[0010] Preferably, the cam is located at the lower end surface of the moving block, and the cam is in sliding contact with the moving block, the shaft body is fixedly connected to one side surface of the cam, and the handle is fixedly connected to one end surface of the shaft body.

[0011] Preferably, the handle is located at the front end of the base plate, and the shaft is rotationally connected to the base plate.

[0012] Preferably, the first contact rod and the second contact rod are both arc-shaped and are made of deformable materials.

[0013] Preferably, the connecting ball and the second contact rod are never separated.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: through the structural cooperation between the contact rod 1 and the contact rod 2, all the buckle rods can be moved outward, and then the buckle rods can be separated from the bearing shell, and the position of the bearing nest and the bearing shell can be adjusted; one side of the contact rod 1 is connected to the contact rod 2 through the arc rod, and the connecting ball is used to prevent the contact rod 1 from being separated from the contact rod 2, and then the buckle rods can move at the same time, and the position of the bearing nest and the bearing shell can be quickly limited to avoid the bearing nest and the bearing shell from rotating; the buckle rods are the same in number as the connecting rods, and can move with the connecting rods, so the fixing operation between the bearing nest and the bearing shell is quick and effective, and is more practical;

[0015] The staff can rotate the handle, and then the handle can drive the shaft to rotate, and then the shaft can drive the cam to rotate, the cam can push the moving block upward, and the moving block can drive one end of the limit rod to move upward, and under the action of the fixed rod, the limit rod can be resisted, and then the other end of the limit rod can be retracted into the interior of the substrate, and the limit rod can move inside the groove, and then the mushroom head is assembled on the substrate. After it is placed stably, the handle is turned so that the cam does not push the moving block, and the moving block moves downward under the action of the damping spring, and then one end of the limit rod moves downward. Because the elastic hinge makes the limit rod always have an upward trend, the limit rod can always contact with the fixed rod, and then the other end of the limit rod can contact with the mushroom head, so the position of the mushroom head can be fixed, no single fixation is required, multiple starts can be started at the same time, the operation is quick, and it is more practical.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a structural schematic diagram of a limiting mechanism in the present invention at one angle;

[0020] Figure 3 It is a structural schematic diagram of the installation mechanism in the present invention;

[0021] Figure 4 It is a structural schematic diagram of the moving mechanism in the present invention;

[0022] Figure 5 It is a structural schematic diagram of another angle of the limiting mechanism in the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Base plate; 2. Bearing nest; 3. Support; 4. Bearing; 5. Mushroom head; 6. Hinge; 7. Connecting rod; 8. Contact rod 1; 9. Buckle rod; 10. Groove; 11. Fixed rod; 12. Limit rod; 13. Damping spring; 14. Moving block; 15. Cam; 16. Connecting ball; 17. Arc rod; 18. Contact rod 2; 19. Shaft; 20. Handle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 The present invention provides a novel technical solution for the friction pair of the bottom pivot of a miter gate: comprising a base plate 1, a bearing nest 2 and a support 3, wherein the support 3 is arranged on the upper end surface of the bearing nest 2, the bearing nest 2 is located above the base plate 1, a bearing bush 4 is arranged inside the bearing nest 2, a mushroom head 5 is arranged inside the bearing bush 4, and an installation mechanism is arranged between the bearing nest 2 and the bearing bush 4;

[0027] One side of the contact rod 1 8 is connected to the contact rod 2 18 through an arc rod 17, and the connecting ball 16 is used to prevent the contact rod 1 8 from being separated from the contact rod 2 18, so that the buckle rod 9 can move at the same time, and can quickly limit the position of the bearing nest 2 and the bearing shell 4 to prevent the bearing nest 2 and the bearing shell 4 from rotating. The buckle rod 9 is the same in number as the connecting rod 7 and can move with the connecting rod 7. The installation mechanism includes a hinge 6, a connecting rod 7 and a buckle rod 9. The number of connecting rods 7 is several. The connecting rod 7 is connected to the bearing nest 2 through the hinge 6. The buckle rod 9 is fixedly connected to one side of the connecting rod 7. 9 is arc-shaped and inserted into the inside of the bearing nest 2 and the bearing shell 4. A moving mechanism is arranged between two adjacent connecting rods 7. The moving mechanism includes a contact rod 1 8, a contact rod 2 18, an arc-shaped rod 17 and a connecting ball 16. The arc-shaped rod 17 is fixedly connected to a side surface of the contact rod 1 8. The connecting ball 16 is fixedly connected to an end surface of the arc-shaped rod 17 away from the contact rod 1 8. The arc-shaped rod 17 and the connecting ball 16 are both slidably inserted into the inside of the contact rod 2 18. The contact rod 1 8 and the contact rod 2 18 are both arc-shaped and are made of deformable materials. The connecting ball 16 and the contact rod 2 18 are never separated.

[0028] The staff can rotate the handle 20, and then the handle 20 can drive the shaft 19 to rotate, and then the shaft 19 can drive the cam 15 to rotate, and the cam 15 can push the moving block 14 upward, and the moving block 14 can drive one end of the limiting rod 12 to move upward, and under the action of the fixed rod 11, the limiting rod 12 can be resisted, and then the other end of the limiting rod 12 can be retracted into the inside of the substrate 1, and the limiting rod 12 can move inside the groove 10, and then the mushroom head 5 is assembled on the substrate 1. After it is placed stably, the handle 20 is rotated so that the cam 15 does not push the moving block 14, and the moving block 14 moves downward under the action of the damping spring 13, and then one end of the limiting rod 12 moves downward. Due to the elastic hinge, the limiting rod 12 always has an upward trend, so the limiting rod 12 can always contact with the fixed rod 11, and a limiting mechanism is arranged inside the substrate 1, and the limiting mechanism includes a moving block 14, a damping spring 13, The limiting rod 12, the fixing rod 11, the groove 10, the cam 15, the shaft 19 and the handle 20. The groove 10 is opened at a position near the upper end of the inner part of the substrate 1. The fixing rod 11 is fixedly connected to the inner part of the groove 10. The limiting rod 12 is located at the lower end of the fixing rod 11, and the limiting rod 12 and the fixing rod 11 are in sliding contact. The upper end of the limiting rod 12 is engaged with the mushroom head 5, and an elastic hinge is provided between the lower end of the limiting rod 12 and the moving block 14. There are two limiting rods 12, and the moving block 14 is arranged opposite to each other. The damping spring 13 is located at the upper end surface of the moving block 14, and the damping spring 13 is always in a compressed state. The cam 15 is located at the lower end surface of the moving block 14, and the cam 15 and the moving block 14 are in sliding contact. The shaft 19 is fixedly connected to one side surface of the cam 15. The handle 20 is fixedly connected to one end surface of the shaft 19. The handle 20 is located at the front end position of the substrate 1, and the shaft 19 is rotatably connected to the substrate 1.

[0029] A specific application of this embodiment is: connecting the bearing nest 2 on the device with the bearing shell 4, pulling one of the connecting rods 7 outward, and then all the buckle rods 9 can be moved outward through the structural cooperation between the contact rod 1 8 and the contact rod 2 18, so that the buckle rod 9 can be separated from the bearing shell 4, and the position of the bearing nest 2 and the bearing shell 4 can be adjusted. One side of the contact rod 1 8 is connected to the contact rod 2 18 through the arc rod 17, and the connecting ball 16 is used to prevent the contact rod 1 8 from being separated from the contact rod 2 18, so that the buckle rod 9 can move at the same time, and can quickly limit the position of the bearing nest 2 and the bearing shell 4 to avoid the bearing nest 2 and the bearing shell 4 from rotating. The buckle rod 9 is the same in number as the connecting rod 7 and can move with the connecting rod 7. The operation is quick, effective and more practical. In the process of installing the mushroom head 5 through the base plate 1, the staff can first rotate the handle 20, and then the handle 20 can The cam 15 is able to drive the shaft body 19 to rotate, and then the shaft body 19 can drive the cam 15 to rotate, and the cam 15 can push the moving block 14 upward, and the moving block 14 can drive one end of the limiting rod 12 to move upward, and under the action of the fixed rod 11, the limiting rod 12 can be resisted, and then the other end of the limiting rod 12 can be retracted into the inside of the base plate 1, and the limiting rod 12 can move inside the groove 10, and then the mushroom head 5 is assembled on the base plate 1, and after it is placed stably, the handle 20 is turned so that the cam 15 does not push the moving block 14, and the moving block 14 moves downward under the action of the damping spring 13, and then one end of the limiting rod 12 moves downward, and because the elastic hinge makes the limiting rod 12 always have an upward trend, the limiting rod 12 can always contact with the fixed rod 11, and then the other end of the limiting rod 12 can contact with the mushroom head 5, and the position of the mushroom head 5 can be fixed, which is more practical;

[0030] The bearing nest material is copper alloy inlaid bearing. The requirements for copper alloy substrate and solid lubricant are as follows:

[0031] First, the copper alloy substrate is high-strength brass, which is ZCuZn25Al6Fe3Mn3 or equivalent specified in GB / T 1176;

[0032] Second, the mechanical properties of the copper alloy substrate must meet the requirements of GB / T 23894, with tensile strength ≥740 N / mm2, elongation after fracture ≥10%, Brinell hardness ≥210 HBW, and compression permanent deformation (compressive stress 300 N / mm2) ≤0.03 mm;

[0033] Third, lead-free PTFE solid lubricants are recommended. The friction coefficient of the bearing nest material is lower than 0.12, and the maximum dynamic load and maximum static load are not lower than 90N / mm2 and 150N / mm2 respectively.

[0034] The material of the mushroom head is high carbon chromium stainless bearing steel G102Cr18Mo, which conforms to the relevant provisions of GB / T 3086. The annealed material can be used with a hardness of 197HBW~255HBW.

[0035] Friction pair structure and design

[0036] First, the fit between the bearing and the mushroom head must ensure that the movement clearance is controlled at around 1.200mm.

[0037] Second, the machining surface roughness of the friction surface of the bearing and mushroom head should be guaranteed to be below Ra1.6.

[0038] Third, the bearing is equipped with two sealing rings to ensure the sealing effect and prevent mud and sand from entering.

[0039] Fourth, when designing the friction pair, it is recommended that the maximum wear value of the bottom pivot bearing be designed according to the failure value of .004dm (i.e. 4.8 mm) specified in JB / T 10860.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A friction pair of a bottom pivot of a miter gate, comprising a base plate (1), a bearing nest (2) and a support (3), wherein the support (3) is arranged on the upper end surface of the bearing nest (2), and the bearing nest (2) is located above the base plate (1), characterized in that: A bearing bush (4) is arranged inside the bearing nest (2), a mushroom head (5) is arranged inside the bearing bush (4), and a mounting mechanism is arranged between the bearing nest (2) and the bearing bush (4); The mounting mechanism comprises a hinge (6), a connecting rod (7) and a buckle rod (9), wherein the connecting rod (7) is in a plurality of numbers, the connecting rod (7) being connected to the bearing nest (2) via the hinge (6), the buckle rod (9) being fixedly connected to a side surface of the connecting rod (7), the buckle rod (9) being arc-shaped and inserted into the inside of the bearing nest (2) and the bearing shell (4), and a moving mechanism being arranged between two adjacent connecting rods (7), the moving mechanism comprising a contact rod 1 (8), a contact rod 2 (18), an arc-shaped rod (17) and a connecting ball (16), the arc-shaped rod (17) being fixedly connected to a side surface of the contact rod 1 (8), the connecting ball (16) being fixedly connected to an end surface of the arc-shaped rod (17) away from the contact rod 1 (8), and the arc-shaped rod (17) and the connecting ball (16) being both slidably inserted into the inside of the contact rod 2 (18); A limiting mechanism is arranged inside the base plate (1), the limiting mechanism comprising a moving block (14), a damping spring (13), a limiting rod (12), a fixing rod (11), a groove (10), a cam (15), a shaft (19) and a handle (20), the groove (10) being arranged inside the base plate (1) at a position close to the upper end, and the fixing rod (11) being fixedly connected inside the groove (10); The limiting rod (12) is located at the lower end of the fixing rod (11), and the limiting rod (12) and the fixing rod (11) are in sliding contact, the upper end of the limiting rod (12) is clamped with the mushroom head (5), and an elastic hinge is provided between the lower end of the limiting rod (12) and the moving block (14), and the limiting rods (12) are two in number and are symmetrically arranged on both sides of the moving block (14); The damping spring (13) is located on the upper end surface of the moving block (14), and the damping spring (13) is always in a compressed state; The cam (15) is located on the lower end surface of the moving block (14), and the cam (15) is in sliding contact with the moving block (14); the shaft (19) is fixedly connected to a side surface of the cam (15); and the handle (20) is fixedly connected to an end surface of the shaft (19); The handle (20) is located at the front end of the base plate (1), and the shaft (19) is rotatably connected to the base plate (1).

2. The friction pair of the bottom pivot of a miter gate according to claim 1, characterized in that: The contact rod 1 (8) and the contact rod 2 (18) are both arc-shaped and are made of deformable materials.

3. The friction pair of the bottom pivot of a miter gate according to claim 1, characterized in that: The connecting ball (16) and the second contact rod (18) are never separated.

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