A miter gate top pivot device

Abstract

The utility model provides a miter gate top pivot device, comprising: an installation arm group, which comprises a pull frame assembly, an adjustment assembly and a pull rod which are arranged in sequence, the adjustment assembly is used to realize the position adjustment of the pull rod along its own length direction; the installation arm group is two pieces and the pull rods in the two installation arm groups are of unequal lengths; a connecting rod, the two ends of which are respectively rotatably connected with the outer ends of the two pull rods; the adjustment assembly comprises a support assembly, an adjustment screw, and a first wedge block and a second wedge block which are both arranged through a slideway on the pull frame assembly; the first wedge block and the second wedge block are both arranged through the adjustment screw and both realize vertical movement by rotating the adjustment screw, and the first wedge block and the second wedge block which are adjusted to the right position are respectively supported by the support assembly; the inner end of the pull rod is arranged in the slideway, and the inner end of the pull rod is symmetrically provided with two second inclined surfaces which respectively cooperate with the first wedge block and the second wedge block. The top pivot device can improve the convenience of operation of gate installation precision adjustment and the stability of gate operation.

Description

Technical Field

[0001] The utility model relates to the technical field of ship lock engineering, in particular to a miter gate top pivot device. Background Art

[0002] The top pivot is the supporting device on the upper part of the miter gate. It is an important structure to prevent the gate leaf from tipping over and ensure that the gate body of the miter gate can rotate freely around the rotation center. During the installation and maintenance of the miter gate, it can be used to adjust the position of the gate rotation axis so that the gate rotation axis remains vertical and coincides with the designed rotation center point. Usually, a hinged frame top pivot is used in medium and small miter gates, which consists of two adjustable tie rods. One end of the tie rod is hinged to the anchor frame buried in the concrete of the gate head side pier, and the other end is connected to the bearing structure fixed on the gate leaf. By turning the flange nut on the tie rod, the length of the tie rod can be changed, thereby adjusting the position of the top pivot center. This type of top pivot device adjusts the gate accuracy through the flange nut, and its operation convenience is poor; at the same time, because the tie rod is bent when the gate rotates, it usually cannot transmit a large force, so the gate operation stability is poor.

[0003] In summary, there is an urgent need for a miter gate top pivot device to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a miter gate top pivot device, which aims to solve the problem that the existing top pivot device adjusts the gate through the flange nut, has poor operation convenience, and cannot transmit large force, resulting in poor gate operation stability. The specific technical solution is as follows:

[0005] A miter gate top pivot device, comprising:

[0006] The mounting arm group comprises a pull frame assembly, an adjustment assembly and a pull rod which are arranged in sequence, wherein the adjustment assembly is used to adjust the position of the pull rod along its own length direction; the mounting arm group consists of two pieces and the lengths of the pull rods in the two mounting arm groups are not equal;

[0007] A connecting rod, both ends of which are rotatably connected to the outer ends of the two pull rods;

[0008] The adjustment assembly includes a support assembly, an adjustment screw, and a first wedge block and a second wedge block both penetrating the upper slideway of the pull frame assembly; the first wedge block and the second wedge block are both penetrating the adjustment screw and both move vertically by rotating the adjustment screw, and the first wedge block and the second wedge block after being adjusted into place are supported by the support assembly respectively;

[0009] The inner end of the pull rod is arranged in the slideway, and two second inclined surfaces are symmetrically provided at the inner end of the pull rod, one of the second inclined surfaces is in sliding contact with the first inclined surface on the first wedge block, and the other second inclined surface is in sliding contact with the first inclined surface on the second wedge block.

[0010] Preferably in the above technical solution, the support assembly includes a support adjustment member, and the support adjustment member includes an upper wedge block, a lower wedge block, an adjustment bolt and a frame. The upper wedge block and the lower wedge block are stacked in the frame and are in sliding contact with each other through a third inclined surface. The adjustment bolt is installed on the frame and is threadedly connected to the lower wedge block.

[0011] Preferably in the above technical solution, the support assembly further comprises a seat frame arranged below the support adjustment member and a plurality of pads stacked on the support adjustment member, and the circumference of the plurality of stacked pads is wrapped by a pad sleeve.

[0012] Preferably in the above technical solution, the adjustment assembly also includes a seat frame pad, the seat frame is arranged on the seat frame pad, and the seat frame pad is connected to the anchor assembly.

[0013] Preferably in the above technical solution, the anchoring assembly includes anchoring rib one, a lap plate and anchoring rib two, and the anchoring rib one and anchoring rib two are respectively located on both sides of the lap plate and are both fixedly connected to the lap plate.

[0014] Preferably in the above technical solution, the pulling frame assembly includes an intermediate pulling frame and a connecting arm group arranged on the intermediate pulling frame, the connecting arm group is provided with the slideway, and the first wedge block and the second wedge block are arranged through the connecting arm group.

[0015] Preferably in the above technical solution, the adjustment assembly also includes a wedge cover arranged on the connecting arm group, a cavity for accommodating the upper parts of the first wedge block and the second wedge block is formed between the wedge cover and the connecting arm group, and the adjusting screw passes through the wedge cover and is connected to the first wedge block or the second wedge block.

[0016] Preferably in the above technical solution, a locking nut is sleeved on the adjusting screw, and the locking nut is located above the first wedge block or the second wedge block, and the locking nut is used to resist the wedge cover to lock the adjusting screw.

[0017] Preferably in the above technical solution, the rack assembly further includes a reinforcement rod, and at least one reinforcement rod is arranged at the lower end of the intermediate rack;

[0018] The draw frame assembly further comprises a reinforcement draw plate, and a plurality of reinforcement draw plates are provided on both sides of the middle draw frame.

[0019] Preferably in the above technical solution, in the connecting rod and the two pull rods, the length of the long pull rod is equal to the sum of the length of the connecting rod and the length of the short pull rod.

[0020] The application of the technical solution of the utility model has the following beneficial effects:

[0021] In the top pivot device of the utility model, the position of the pull rod can be accurately adjusted by controlling the opposite movements of the first wedge block and the second wedge block, thereby improving the accuracy of adjusting the rotation axis of the gate; at the same time, the top pivot device bears tension and pressure respectively through two first inclined surfaces during operation, and the bottoms of the first wedge block and the second wedge block are supported by a supporting assembly to prevent the first wedge block and the second wedge block from changing their positions after being adjusted into place, thereby affecting the position of the rotation axis of the gate; the use of the top pivot device of the utility model can improve the stability of the gate operation and facilitate the adjustment of the rotation axis of the gate.

[0022] The first wedge block, the second wedge block and the pull rod are in sliding contact through the first inclined surface and the second inclined surface, so that the vertical movement distance L1 of the first wedge block and the second wedge block is in a multiple relationship with the movement distance L2 of the pull rod, that is, L1=N×L2, where N is greater than 1; that is, it is necessary to turn the adjusting screw several times to make the pull rod move a short distance, so as to achieve the effect of accurately adjusting the position of the pull rod and accurately adjusting the rotation axis of the gate, thereby improving the operational convenience of the gate precision adjustment.

[0023] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 It is an axonometric diagram of the top pivot device of the miter gate of the utility model;

[0026] Figure 2 is a cross-sectional view of a first mounting arm assembly in the top pivot device;

[0027] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 is a cross-sectional view of a second mounting arm assembly in the top pivot device;

[0029] Figure 5 is a cross-sectional view of a support adjustment member in a top pivot device;

[0030] Among them, 1. Pull frame assembly, 1.1. Middle pull frame, 1.2. Reinforcement pull rod, 1.3. Reinforcement pull plate, 1.4. Connecting arm assembly, 1.5. Slide, 2. Adjustment assembly, 2.1. Adjustment screw, 2.2. First wedge block, 2.3. Second wedge block, 2.4. Spacer sleeve, 2.5. Spacer, 2.6. Support adjustment member, 2.6.1. Upper wedge block, 2.6.2. Lower wedge block, 2.6.3. Adjustment bolt , 2.6.4, frame, 2.7, seat frame, 2.8, seat frame pad, 2.9, anchor assembly, 2.9.1, anchor bar one, 2.9.2, lap plate, 2.9.3, anchor bar two, 2.10, wedge cover, 2.11, locking nut, 3, first pull rod, 4, connecting rod, 5, second pull rod, 6, hinge assembly one, 7, hinge assembly two, 8, gate, 9, first phase concrete, 10, second phase concrete. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] Example:

[0034] See also Figure 1-Figure 5 The present embodiment provides a miter gate top pivot device, specifically a ship lock miter gate top pivot device, the top pivot device comprising:

[0035] The mounting arm assembly comprises a pull frame assembly 1, an adjustment assembly 2 and a pull rod which are arranged in sequence, wherein the adjustment assembly 2 is used to adjust the position of the pull rod along its own length direction; the mounting arm assembly consists of two pieces and the lengths of the pull rods in the two mounting arm assemblies are not equal, wherein the pull frame assembly 1 is the fixed end of the entire top pivot device;

[0036] A connecting rod 4, both ends of which are rotatably connected to the outer ends of the two pull rods;

[0037] Preferably, the length of the long pull rod is equal to the sum of the length of the connecting rod and the length of the short pull rod, wherein the rotational connection between the outer end of the long pull rod and the connecting rod is the connection point between the top pivot device and the gate 8, and the rotation axis of this rotational connection is the rotation axis of the gate 8; the long pull rod and the short pull rod are rotationally connected by a connecting rod in order to provide the top pivot device with one degree of freedom when adjusting the rotation axis of the gate. If the two pull rods are the same length, they will form a stable triangular structure after being rotationally connected, and it will be impossible to adjust the position of the pull rod along its own length to achieve the effect of adjusting the rotation axis of the gate 8.

[0038] See also Figure 1-Figure 4 In order to more clearly illustrate the structure of the top pivot device in this embodiment, the two mounting arm groups in this embodiment are respectively Figure 2 The first mounting arm set and Figure 4 The second mounting arm group is shown, wherein the pull rod in the first mounting arm group is the first pull rod 3, and the pull rod in the second mounting arm group is the second pull rod 5, the first pull rod 3 and the second pull rod 5 are rotatably connected via a connecting rod 4, wherein the first pull rod 3 and the connecting rod 4 are hinged via a hinge assembly 1 6, and the second pull rod 5 and the connecting rod 4 are hinged via a hinge assembly 2 7; the length of the first pull rod 3 is equal to the sum of the lengths of the second pull rod and the connecting rod, so as to provide a degree of freedom to achieve position adjustment of the first pull rod and the second pull rod, and to achieve that after the top pivot device is adjusted into place (i.e. during the operation of the top pivot device), the angle between the connecting rod 4 and the second pull rod 5 is 180° (i.e. the two are coaxial), so that the connecting rod and the second pull rod can withstand tension.

[0039] Furthermore, the hinge assembly 1 6 and the hinge assembly 2 7 generally include a rotating pin and a bearing, wherein the bearing serves to reduce the rotational friction resistance and reduce the wear; in order to prevent the rotating pin from rotating on its own, a keyway is generally provided on the rotating pin, and a flat key or a stop plate cooperates with the keyway to achieve the effect of preventing the rotating pin from rotating on its own.

[0040] Please continue to see Figure 2-Figure 4 The adjustment assembly 2 includes a support assembly, an adjusting screw 2.1, and a first wedge 2.2 and a second wedge 2.3, both of which are arranged through the slideway 1.5 of the pull frame assembly 1; the first wedge 2.2 and the second wedge 2.3 are both arranged through the adjusting screw 2.1 and both realize vertical movement by rotating the adjusting screw 2.1, and the first wedge 2.2 and the second wedge 2.3 after being adjusted into place are supported by the support assembly respectively; the first wedge 2.2 and the second wedge 2.3 are both provided with a first inclined surface;

[0041] Furthermore, the inner end of the pull rod is arranged in the slideway 1.5 on the pull frame assembly 1, and the inner end of the pull rod (i.e., the first pull rod and the second pull rod) is symmetrically provided with two second inclined surfaces, one of which is in sliding contact with the first inclined surface on the first wedge block 2.2, and the other second inclined surface is in sliding contact with the first inclined surface on the second wedge block 2.3. In this embodiment, the two second inclined surfaces at the inner end of the pull rod are symmetrically arranged about the vertical axis, so that one of the first inclined surfaces bears the tension and the other first inclined surface bears the pressure between the first wedge block and the second wedge block.

[0042] like Figure 3 As shown, in this embodiment, the position adjustment of the pull rod is specifically achieved through the opposite movements of the first wedge block and the second wedge block, that is: when the first wedge block 2.2 moves upward under the action of the adjusting screw 2.1, the second wedge block moves downward, and the pull rod is forced to move in the direction of the second wedge block; when the second wedge block moves upward, the first wedge block moves downward, and the pull rod is forced to move in the direction of the first wedge block.

[0043] See also Figure 5 The support assembly includes a support adjustment member 2.6, which includes an upper wedge block 2.6.1, a lower wedge block 2.6.2, an adjusting bolt 2.6.3 and a frame 2.6.4. The upper wedge block and the lower wedge block are both provided with a third inclined surface. The upper wedge block 2.6.1 and the lower wedge block 2.6.2 are stacked in the frame 2.6.4 and are in sliding contact through the third inclined surface. The adjusting bolt 2.6.3 is installed on the frame 2.6.4 and is threadedly connected to the lower wedge block 2.6.2; by turning the adjusting bolt 2.6.3, the lower wedge block moves accordingly, thereby raising or lowering the upper wedge block to achieve the effect of adjusting the support height.

[0044] For further information, see Figure 3 The support assembly also includes a seat frame 2.7 disposed below the support adjustment member 2.6 and a plurality of pads 2.5 stacked on the support adjustment member 2.6. The circumference of the stacked plurality of pads 2.5 is wrapped by a pad sleeve 2.4 to prevent a single pad from moving. The cooperation of the pads and the support adjustment member 2.6 can increase the adjustment range of the support height and improve the adjustment accuracy. When the stacking thickness of the pads almost reaches the appropriate support height value, the support adjustment member 2.6 can be used for fine adjustment to prevent the first wedge block and the second wedge block from moving after being adjusted into place, resulting in a change in the gate rotation axis. The seat frame 2.7 is mainly used to provide a flat mounting surface for the installation of the support adjustment member, so as to facilitate the subsequent accurate adjustment of the support height.

[0045] Furthermore, the adjustment assembly 2 further comprises a seat frame pad 2.8, the seat frame 2.7 is arranged on the seat frame pad 2.8, and the seat frame pad 2.8 is connected to the anchor assembly 2.9. The seat frame pad is connected to the anchor assembly and anchored together in the concrete, and the seat frame pad is the installation base plate of all the seat frames 2.7, providing an installation plane for the installation of the seat frames 2.7.

[0046] Preferably, the anchor assembly 2.9 includes anchor bar 1 2.9.1, lap plate 2.9.2 and anchor bar 2.9.3, wherein the anchor bar 1 2.9.1 and anchor bar 2.9.3 are respectively located on both sides of the lap plate 2.9.2 and are fixedly connected to the lap plate 2.9.2. The anchor bar 2.9.3 is anchored with the pouring of the first-stage concrete 9, and the lap plate and anchor bar 1 are anchored with the pouring of the second-stage concrete 10, wherein the lap plate is used to eliminate the position error between the anchor bars 1 and 2, and the lap plate is used as a transition to reduce the position accuracy requirement of the anchor bar 2 2.9.3, which is convenient for the construction of the first-stage concrete 9 pouring.

[0047] See also Figure 2 and Figure 4 The pull frame assembly 1 includes an intermediate pull frame 1.1 and a connecting arm group 1.4 arranged on the intermediate pull frame 1.1. The connecting arm group 1.4 is provided with the slideway 1.5. The first wedge block 2.2 and the second wedge block 2.3 are arranged through the connecting arm group 1.4. Specifically, the connecting arm group 1.4 includes an upper plate and a lower plate, and the upper plate and the lower plate are arranged relative to each other to form the slideway 1.5. At the same time, the upper plate and the lower plate are both provided with through holes to allow the first wedge block and the second wedge block to pass through. The slideway 1.5 can play the effect of constraining the movement direction of the pull rod, so that the pull rod can only move in a translational direction along its own length direction. Furthermore, a reinforcing plate can be arranged between the upper plate and the lower plate, and the reinforcing plate connects the upper plate and the lower plate to ensure the structural strength of the entire connecting arm group 1.4.

[0048] See also Figure 2-Figure 4 The adjustment assembly 2 also includes a wedge cover 2.10 arranged on the connecting arm group 1.4, and a cavity for accommodating the upper parts of the first wedge block 2.2 and the second wedge block 2.3 is formed between the wedge cover 2.10 and the connecting arm group. The adjusting screw 2.1 passes through the upper panel of the wedge cover 2.10 and is connected to the first wedge block 2.2 or the second wedge block 2.3. The wedge cover can play a protective role to prevent rainwater, dust and other substances from entering between the adjusting screw and the first wedge block and the second wedge block, causing the adjusting screw to get stuck and unable to rotate.

[0049] Furthermore, a locking nut 2.11 is sleeved on the adjusting screw 2.1, and the locking nut 2.11 is located above the first wedge block or the second wedge block. The locking nut 2.11 is used to abut against the wedge cover 2.10 to lock the adjusting screw 2.1 and prevent the adjusting screw 2.1 from self-rotating and loosening. Preferably, the locking nut 2.11 in this embodiment is located in the inner cavity of the wedge cover, and the locking is achieved by the locking nut abutting against the inner wall of the wedge cover, while preventing the locking nut from easily rusting; in order to facilitate the adjustment of the locking nut, a window can be opened on the wedge cover 2.10, and the tool can enter the interior of the wedge cover through the window to adjust the locking nut; after the adjustment of the locking nut is completed, the window can be closed by a door or a blocking plate to ensure that the protective effect of the wedge cover is not affected. Of course, in some embodiments, the locking nut may also be set on the outside of the wedge cover, and the adjusting screw is locked by the locking nut abutting against the upper surface of the wedge cover.

[0050] See also Figure 1 , Figure 2 and Figure 4 The frame assembly 1 further includes a reinforcement rod 1.2, and at least one reinforcement rod 1.2 is arranged at the lower end of the intermediate frame 1.1; wherein the reinforcement rod 1.2 is anchored with the first phase of concrete pouring, and the reinforcement rod and the intermediate frame 1.1 are connected by welding. Preferably, the frame assembly 1 further includes a reinforcement plate 1.3, and a plurality of reinforcement plates 1.3 are arranged on both sides of the intermediate frame 1.1; the reinforcement rod 1.2 and the reinforcement plate 1.3 are used to increase the force of the entire frame assembly 1, thereby ensuring the structural stability of the top pivot device.

[0051] Preferably, the intermediate bracket 1.1 in this embodiment is a triangular frame, and in some embodiments the intermediate bracket 1.1 may also be a quadrilateral frame.

[0052] Preferably, the adjusting screw needs to limit its movement in the axial direction, that is, the adjusting screw can only rotate but cannot move in the axial direction; please refer to the prior art for the specific limiting method, which may be to set a limit step or a limit retaining ring on the adjusting screw, and to achieve a limiting effect by means of the limit step or the limit retaining ring being against the fixed component.

[0053] In the top pivot device of this embodiment, the pull frame assembly is buried in the concrete, and only the connecting arm assembly 1.4 is exposed for the subsequent installation of the adjustment assembly 2. In the specific construction process, the reinforcement rod 1.2 and the second anchor bar 2.9.3 are anchored when the first phase concrete 9 is poured, and the second phase concrete 10 is poured after the remaining components of the top pivot device of this embodiment are installed, wherein the middle pull frame 1.1, the lap plate 2.9.2, the first anchor bar 2.9.1 and the seat frame pad 2.8 are all anchored in the second phase concrete.

[0054] When adjusting the gate rotation axis, the top pivot device in this embodiment first adjusts the position of the first pull rod 3 and then adjusts the position of the second pull rod 5. After the adjustment, ensure that the second pull rod and the connecting rod are on the same straight line.

[0055] In the top pivot device in the present embodiment, precise adjustment of the pull rod position can be achieved by controlling the opposite movements of the first wedge block and the second wedge block, thereby improving the accuracy of adjusting the rotation axis of the gate 8; at the same time, the top pivot device bears tension and pressure respectively through two first inclined surfaces during operation, and the bottoms of the first wedge block and the second wedge block are supported by a support assembly to prevent the first wedge block and the second wedge block from changing their positions after being adjusted into place, thereby affecting the position of the rotation axis of the gate; the use of the top pivot device in the present embodiment can improve the stability of the gate operation and facilitate the adjustment of the rotation axis of the gate.

[0056] The first wedge block, the second wedge block and the pull rod are in sliding contact through the first inclined surface and the second inclined surface, so that the vertical movement distance L1 of the first wedge block and the second wedge block is in a multiple relationship with the movement distance L2 of the pull rod, that is, L1=N×L2, where N is greater than 1; that is, it is necessary to turn the adjusting screw several times to make the pull rod move a small distance, so as to achieve the effect of accurately adjusting the position of the pull rod and the rotation axis of the gate.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A miter gate top pivot device, characterized in that: include: The mounting arm assembly comprises a pull frame assembly (1), an adjustment assembly (2) and a pull rod which are arranged in sequence, wherein the adjustment assembly (2) is used to adjust the position of the pull rod along its own length direction; the mounting arm assembly comprises two pieces and the lengths of the pull rods in the two mounting arm assemblies are unequal; A connecting rod (4), the two ends of which are rotatably connected to the outer ends of the two pull rods respectively; The adjustment assembly (2) comprises a support assembly, an adjusting screw (2.1), and a first wedge block (2.2) and a second wedge block (2.3) both of which are arranged to penetrate the upper slideway (1.5) of the pull frame assembly (1); the first wedge block (2.2) and the second wedge block (2.3) are both arranged to penetrate the adjusting screw (2.1) and are both moved vertically by rotating the adjusting screw (2.1); after being adjusted into place, the first wedge block (2.2) and the second wedge block (2.3) are respectively supported by the support assembly; The inner end of the pull rod is arranged in the slideway (1.5), and two second inclined surfaces are symmetrically provided on the inner end of the pull rod, one of the second inclined surfaces is in sliding contact with the first inclined surface on the first wedge block (2.2), and the other second inclined surface is in sliding contact with the first inclined surface on the second wedge block (2.3).

2. The miter gate top pivot device according to claim 1, characterized in that: The support assembly comprises a support adjustment member (2.6), and the support adjustment member (2.6) comprises an upper wedge block (2.6.1), a lower wedge block (2.6.2), an adjustment bolt (2.6.3) and a frame (2.6.4); the upper wedge block (2.6.1) and the lower wedge block (2.6.2) are stacked in the frame (2.6.4) and are in sliding contact via a third inclined surface; the adjustment bolt (2.6.3) is mounted on the frame (2.6.4) and is threadedly connected to the lower wedge block (2.6.2).

3. The miter gate top pivot device according to claim 2, characterized in that: The support assembly further comprises a seat frame (2.7) arranged below the support adjustment member (2.6) and a plurality of cushion blocks (2.5) stacked on the support adjustment member (2.6), wherein the circumference of the stacked plurality of cushion blocks (2.5) is wrapped by a cushion block sleeve (2.4).

4. The miter gate top pivot device according to claim 3, characterized in that: The adjustment assembly (2) further comprises a seat frame pad (2.8), the seat frame (2.7) is arranged on the seat frame pad (2.8), and the seat frame pad (2.8) is connected to the anchor assembly (2.9).

5. The miter gate top pivot device according to claim 4, characterized in that: The anchor assembly (2.9) comprises anchor bar one (2.9.1), a lap plate (2.9.2) and anchor bar two (2.9.3); the anchor bar one (2.9.1) and anchor bar two (2.9.3) are respectively located on both sides of the lap plate (2.9.2) and are both fixedly connected to the lap plate (2.9.2).

6. The miter gate top pivot device according to any one of claims 1 to 5, characterized in that: The pull frame assembly (1) comprises an intermediate pull frame (1.1) and a connecting arm group (1.4) arranged on the intermediate pull frame (1.1); the connecting arm group (1.4) is provided with the slideway (1.5); and the first wedge block (2.2) and the second wedge block (2.3) are arranged through the connecting arm group (1.4).

7. The miter gate top pivot device according to claim 6, characterized in that: The adjustment assembly (2) further comprises a wedge cover (2.10) arranged on the connecting arm assembly (1.4); a cavity for accommodating the upper parts of the first wedge block (2.2) and the second wedge block (2.3) is formed between the wedge cover (2.10) and the connecting arm assembly (1.4); and the adjustment screw (2.1) passes through the wedge cover (2.10) and is connected to the first wedge block (2.2) or the second wedge block (2.3).

8. The miter gate top pivot device according to claim 7, characterized in that: The adjusting screw (2.1) is sleeved with a locking nut (2.11), the locking nut (2.11) is located above the first wedge block or the second wedge block, and the locking nut (2.11) is used to abut against the wedge cover (2.10) to lock the adjusting screw (2.1).

9. The miter gate top pivot device according to claim 6, characterized in that: The rack assembly (1) further comprises a reinforcement rod (1.2), and at least one reinforcement rod (1.2) is arranged at the lower end of the intermediate rack (1.1); The pull frame assembly (1) further comprises a reinforcement pull plate (1.3), and a plurality of reinforcement pull plates (1.3) are provided on both sides of the middle pull frame (1.1).

10. The miter gate top pivot device according to claim 1, characterized in that: In the connecting rod (4) and the two-piece tie rod, the length of the long tie rod is equal to the sum of the length of the connecting rod and the length of the short tie rod.

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