Large-span vertical lift planar maintenance gate with diagonal tie rods

Abstract

This invention discloses a large-span, vertically lifting planar maintenance gate employing inclined tie rods. Multiple inclined tie rod units are arranged on the water-facing side. Each inclined tie rod unit includes: a support member with a first connecting end and a second connecting end, the first connecting end being hinged to the maintenance gate; a driving member disposed below the support member, one end of the driving member being connected to the maintenance gate, and the other end being connected to the support member; and a fixing member disposed at the bottom of the flow channel corresponding to the support member, used to fix the second connecting end. The driving member controls the forward and reverse rotation of the support member. During the opening and closing of the maintenance gate, the support member is attached to the maintenance gate in a first state; when the maintenance gate is blocking water, the support member is in a second state, connecting the maintenance gate and the fixing member. This invention provides a maintenance gate suitable for use in river landscape engineering and lock engineering. It has a reasonable structure, small footprint, is easy to manufacture and install, has low cost, and is very convenient to operate and maintain.

Description

Technical Field

[0001] This invention relates to the field of water-blocking technology for water conservancy engineering gates, and in particular to a large-span vertical lift planar maintenance gate using inclined tie rods. Background Technology

[0002] With the development of engineering technology and the progress of the times, sluice gates used in urban ecological water systems are showing a trend towards diversification and multi-functionality. To meet the requirements of harmony with the urban environment and cultural landscape, sluice gates are needed for water storage and the creation of scenic water surfaces, such as rubber dams, hydraulic dams, and steel dam gates. These sluice gates are characterized by large spans (mostly over 20m) and low heads, but this also presents challenges for maintenance. They typically require the construction of cofferdams (time-consuming, labor-intensive, and involving a large amount of engineering work), maintenance during the dry season, or even complete inability to maintain. Conventional small-to-medium span sluice gates can be equipped with maintenance gates, which are all planar vertical lift steel gates. However, for large-span sluice gates, planar vertical lift steel gates are larger in size and weight, thus requiring higher manufacturing processes and resulting in higher costs. Furthermore, due to the wide span, structural deformation is prone to occur under water pressure during operation, affecting the normal operation of the sluice gate. If a method of dividing the sluice gate into multiple smaller span openings and installing maintenance gates is used, it will result in a reduced flow cross-section, increased flow resistance, and a reduced navigable clearance. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a large-span, vertically lifting planar maintenance gate employing diagonal tie rods, specifically adopting the following technical solution:

[0004] The large-span vertical lift planar maintenance gate with inclined tie rods described in this invention has multiple inclined tie rod units arranged on the water-facing side of the maintenance gate, each of which includes...

[0005] The support member has a first connecting end and a second connecting end, the first connecting end being hingedly connected to the maintenance gate;

[0006] A driving component is disposed below the support component, with one end of the driving component connected to the maintenance gate and the other end connected to the support component;

[0007] A fixing component, corresponding to the support component, is located at the bottom of the flow channel and is used to fix the second connecting end;

[0008] The drive component is used to control the forward and reverse rotation of the support component. During the opening and closing of the maintenance gate, the support component is attached to the maintenance gate in the first state. When the maintenance gate blocks water, the support component is in the second state of connecting the maintenance gate and the fixing component.

[0009] The cable-stayed units are evenly distributed along the span of the maintenance gate.

[0010] The driving component is a telescopic hydraulic cylinder.

[0011] The support is a hollow steel pipe with a connector at one end. The connector is connected to a connecting seat via a rotating shaft, and the connecting seat is bolted to the maintenance gate. The other end of the support has a semi-circular hook. Near the connector, the support has an ear plate for connecting the drive component.

[0012] The fixing component is a pre-embedded base connected to the bottom of the flow channel, and the pre-embedded base is provided with a crossbar adapted to the hook.

[0013] The hook is equipped with a contact switch for controlling the telescopic cylinder to stop retracting.

[0014] The distance between the connecting seat and the bottom plate of the maintenance gate is 1 / 3 to 1 / 2 of the height of the maintenance gate.

[0015] When the maintenance gate is a multi-section vertically stacked structure, each maintenance gate section is equipped with a set of the aforementioned inclined pull units.

[0016] The large-span vertical lift planar maintenance gate with inclined tie rod provided by this invention is suitable for use as a maintenance gate in river landscape engineering and lock engineering. It has a reasonable structure, small footprint, is easy to manufacture and install, has low cost, and is very convenient to operate and maintain.

[0017] Compared with existing technologies, its beneficial effects are as follows:

[0018] 1) By adding several diagonal tie rods in the middle of the flat gate, the effect of "turning a single-span simply supported beam into a multi-span continuous beam" is achieved, making the stress structure of the gate more reasonable.

[0019] 2) It replaces the traditional method of "using the middle pier to divide and form multiple smaller spans of openings", avoiding the drawbacks of reduced flow cross-section, increased water flow resistance, and reduced navigation clearance, and does not affect normal navigation and flood discharge;

[0020] 3) Compared with the traditional "single-hole flat vertical lifting maintenance gate with the same width as the working gate", the maintenance gate of the present invention has reduced beam height and cross-sectional dimensions, and is lighter, less expensive and has less opening and closing force. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0022] Figure 2 yes Figure 1 AA cross-section view.

[0023] Figure 3 yes Figure 2 A schematic diagram of the structure of the middle support component.

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention. Detailed Implementation

[0025] The large-span vertical lift planar maintenance gate with inclined tie rods described in this invention has multiple inclined tie rod units arranged on the water-facing side of the maintenance gate, each of which includes...

[0026] The support member has a first connecting end and a second connecting end, the first connecting end being hingedly connected to the maintenance gate;

[0027] A driving component is disposed below the support component, with one end of the driving component connected to the maintenance gate and the other end connected to the support component;

[0028] A fixing component, corresponding to the support component, is located at the bottom of the flow channel and is used to fix the second connecting end;

[0029] The drive component is used to control the forward and reverse rotation of the support component. During the opening and closing of the maintenance gate, the support component is attached to the maintenance gate in the first state. When the maintenance gate blocks water, the support component is in the second state of connecting the maintenance gate and the fixing component.

[0030] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific working processes are given. However, the scope of protection of the present invention is not limited to the following embodiments.

[0031] Example 1:

[0032] like Figure 1-3 As shown, the inclined cable units of this invention are evenly distributed along the span of the maintenance gate G. Each inclined cable unit uses a telescopic cylinder 1 as its driving component and a hollow steel pipe 2 as its supporting component. One end of the hollow steel pipe 2 is welded with a connector 21, which is connected to a connecting seat 23 via a rotating shaft 22. The connecting seat 23 is then connected to the maintenance gate G via bolts 24. Near the connector 21, the bottom of the hollow steel pipe 2 is welded with an ear plate 25 for connecting the telescopic cylinder 1. The other end of the hollow steel pipe 2 is welded with a semi-circular hook 26, on which a contact switch 27 is installed. To connect the hollow steel pipe 2, a pre-embedded seat 3 is selected at the bottom of the flow channel as the fixing component, and a crossbar 31 adapted to the hook 26 is provided on the pre-embedded seat 3. When the hook 26 is securely hooked onto the crossbar 31 (i.e., the hook 26 is in position), the contact switch 27 sends a signal to the control center, causing the telescopic cylinder 1 to stop retracting, thus keeping the hook 26 and the crossbar 31 in the hooked position. Normally, the distance between the connecting seat 23 and the bottom plate of the maintenance gate G is 1 / 3 to 1 / 2 of the height of the maintenance gate G.

[0033] During gate maintenance, the maintenance gate G is slowly lowered along the gate slot M. During this process, the telescopic cylinder 1 is extended, so that the hollow steel pipe 2 is vertically attached to the maintenance gate G, i.e., the hollow steel pipe 2 is in the first state. After the maintenance gate G is lowered into place, the telescopic cylinder 1 is activated, and its piston rod retracts, so that the hollow steel pipe 2 connected to it rotates downward around the pivot 22 until the hook 26 at the other end is firmly attached to the crossbar 31, i.e., the hollow steel pipe 2 is in the second state. After the gate maintenance is completed, the telescopic cylinder 1 is activated, so that the piston rod extends, and the hollow steel pipe 2 connected to it rotates upward around the pivot 22 until it returns to the first state. Then, the maintenance gate G is slowly raised to allow the dam to work normally.

[0034] Traditional vertical lift planar gates are simply supported beam structures, with gate slots on the gate piers serving as supports. Under water pressure, their maximum stress is proportional to the square of the span, while their maximum deflection is proportional to the fourth power of the span. In this invention, however, the width of the maintenance gate G is equal to the span of the flow channel, i.e., a single-gate structure is adopted. Calculations yielded the following conclusions: Without the installation of inclined tie rods, the maximum bending moment of the maintenance gate G under uniformly distributed load is M, and the maximum deformation is f. With one inclined tie rod as described in this invention installed in the middle of the maintenance gate G, the maximum bending moment under uniformly distributed load is 0.14M, and the maximum deformation is 0.025f. With two inclined tie rods as described in this invention installed on the maintenance gate G, the maximum bending moment under uniformly distributed load is 0.07M, and the maximum deformation is 0.006f. With three inclined tie rods as described in this invention evenly distributed on the maintenance gate G, the maximum bending moment under uniformly distributed load is 0.038M, and the maximum deformation is 0.002f. Therefore, the structural form of installing inclined tie rods on large-span maintenance gates, as adopted in this invention, is highly beneficial to the stress distribution of the maintenance gate, and the static water opening and closing characteristics of the maintenance gate also create conditions for adding inclined tie rods.

[0035] Example 2:

[0036] like Figure 4 As shown, when the maintenance gate G of the present invention adopts a multi-section vertically stacked structure, a set of the above-mentioned inclined pull unit can be set for each section of the maintenance gate G without mutual interference.

[0037] It should be noted that in the description of this invention, terms such as "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

Claims

1. A large-span overhead flat-type maintenance gate employing a diagonal tie rod, characterized in that: The water-approaching side of the inspection gate is provided with a plurality of cable-stayed units The support member has a first connecting end and a second connecting end, and the first connecting end is hingedly connected to the inspection gate; The driving member is arranged below the support member, and one end of the driving member is connected to the inspection gate and the other end is connected to the support member; The fixing member is arranged at the bottom of the flow passage corresponding to the support member, and is used for fixing the second connecting end; The driving member is used for controlling the forward and reverse rotation of the support member, and the support member is in a first state of being attached to the inspection gate during the opening and closing process of the inspection gate; when the inspection gate blocks water, the support member is in a second state of being connected to the inspection gate and the fixing member; The cable-stayed units are uniformly distributed in the span direction of the inspection gate; The driving member is a telescopic oil cylinder; The support member is a hollow steel pipe, one end of which is provided with a connecting member, the connecting member is connected to a connecting seat through a rotating shaft, and the connecting seat is connected to the inspection gate through bolts; the other end of the support member is provided with a semicircular hook; an ear plate for connecting the driving member is arranged on the support member close to the connecting member; The fixing member is a pre-buried seat connected to the bottom of the flow passage, and a cross bar matched with the hook is arranged on the pre-buried seat.

2. The large-span overhead flat-type maintenance gate employing the inclined pull rods according to claim 1, characterized in that: A contact switch for controlling the telescopic oil cylinder to stop retracting is arranged on the hook.

3. The large-span overhead flat-type maintenance gate employing the inclined pull rods according to claim 1, characterized in that: The distance between the connecting seat and the bottom plate of the inspection gate is 1 / 3-1 / 2 of the height of the inspection gate.

4. The large-span overhead flat-type maintenance gate employing the inclined pull rods according to claim 3, characterized in that: When the inspection gate is a multi-section vertical superimposed structure, a group of cable-stayed units is arranged corresponding to each section of the inspection gate.

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