Locking device for hydropower station portal crane

Abstract

The utility model relates to the technical field of water conservancy and hydropower engineering equipment, in particular to a locking device for a hydropower station portal crane, which comprises a U-shaped plate, and a handle and a stop portion used for abutting against and limiting a traveling wheel are mounted on a top plate of the U-shaped plate. The two side plates of the U-shaped plate are each provided with a limiting assembly, and the two limiting assemblies are symmetrically arranged. The limiting assembly comprises an L-shaped clamping plate, a rotating plate and a rotating ejector rod, the L-shaped clamping plate comprises a transverse plate and a vertical plate, the lower end of the vertical plate is hinged to the inner side of the side plate, the transverse plate is connected to the upper end of the vertical plate, and the transverse plate penetrates through the side plate to abut against the lower end of the rotating plate; the middle of the rotating plate is hinged to the side plate, and the upper end of the rotating plate abuts against the rotating ejector rod. Rotating rod mounting seats are mounted at the two ends of the top plate, the rotating ejector rod is horizontally placed, threads are arranged at the outward end of the rotating ejector rod, and the outward end of the rotating ejector rod penetrates through the rotating rod mounting seats to be in threaded connection with the rotating rod mounting seats. And the dam crest two-way portal crane is temporarily fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower engineering equipment, in particular to a locking device for a gantry crane of a hydropower station. Background Art

[0002] The hydropower station gantry crane actually refers to the bidirectional gantry crane on the dam top of the hydropower station.

[0003] The current locking of the dam top two-way gantry crane after installation relies on permanent anchoring and specially installed locking structures, and the installation process of the locking structure takes a certain amount of time. After the dam top two-way gantry crane is installed, the locking structure of the dam top two-way gantry crane and the permanent anchoring are not installed and locked, and the locking structure cannot be put into operation in time due to sudden power failure during use; the dam top two-way gantry crane is in an unlocked state and unstable, and in the case of strong winds, it will seriously affect the safety of the gantry crane, personnel and other equipment.

[0004] Therefore, a convenient locking device for the gantry crane of a hydropower station is needed to lock the bidirectional gantry crane on the dam top in the above situation. Utility Model Content

[0005] The utility model provides a locking device for a gantry crane of a hydropower station, which can temporarily lock the bidirectional gantry crane on the dam top in the above-mentioned situation.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a locking device for a hydropower station door machine comprises a U-shaped plate sliding on a track with an opening facing downward, the U-shaped plate comprises two side plates and a top plate, a handle and a stopper for abutting and limiting a travel wheel are installed on the top plate of the U-shaped plate; a set of limiting components are respectively arranged on the two side plates of the U-shaped plate, and the two sets of limiting components are symmetrically arranged; the limiting component comprises an L-shaped clamping plate, a rotating plate and a rotating top rod, the L-shaped clamping plate comprises a horizontal plate and a vertical plate, the lower end of the vertical plate is hinged to the inner side of the side plate, the horizontal plate is connected to the upper end of the vertical plate, the horizontal plate passes through the side plate and abuts against the lower end of the rotating plate; the middle part of the rotating plate is hinged to the side plate, and the upper end of the rotating plate abuts against the rotating top rod; rotating rod mounting seats are installed on both ends of the top plate, the rotating top rod is placed horizontally, a thread is arranged on the outward end of the rotating top rod, and the outward end of the rotating top rod passes through the rotating rod mounting seat and is threadedly connected to the rotating rod mounting seat.

[0007] Preferably, the stopper is a triangular prism, and the inclined surface of the triangular prism is arranged toward the sliding direction of the track; the lower end of the inclined surface is located at the edge of the top plate, and the higher end of the inclined surface is located in the middle of the top plate.

[0008] Furthermore, a buffer pad is provided on the inclined surface of the triangular prism.

[0009] Preferably, the inclined surface of the triangular prism is arc-shaped and concave.

[0010] Furthermore, a friction plate is arranged on one side of the vertical plate for squeezing the track, and a surface of the friction plate that contacts the track is serrated.

[0011] Furthermore, a rotating cylinder is arranged above the top plate, and cavities are arranged at both the left and right ends of the rotating cylinder, and the inward ends of the two rotating top rods are respectively slidably connected in the cavities at the left and right ends of the rotating cylinder; sliding grooves are arranged on the sides of the rotating top rods, and the direction of the sliding grooves is in the same direction as the axial direction of the rotating top rod; the rotating cylinder is provided with two mounting bolts, and the mounting bolts pass through the rotating cylinder and are located in the sliding grooves and are clamped in the sliding grooves.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] The utility model uses a U-shaped plate as the main body, and uses the stopper on the top plate to press against the walking wheel. By using the linkage of the rotating top rod, the rotating plate and the L-shaped clamping plate, the vertical plates of the left and right L-shaped clamping plates are clamped inward to the track, and the utility model is locked with the track after clamping. It effectively prevents the movement of the two-way gantry crane on the dam top and has a good windproof effect. The U-shaped plate of the utility model always slides on the track, and the rotating top rod can be adjusted to quickly achieve the locking effect when in use, which is highly convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the utility model.

[0015] Figure 2 This is a working state diagram of the utility model.

[0016] Figure 3 It is a cross-sectional view of the utility model.

[0017] Figure 4 for Figure 3 A magnified image of.

[0018] The meanings of the numbers in the figure are: 1-U-shaped plate, 2-triangular prism, 201-buffer pad, 3-L-shaped clamping plate, 301-vertical plate, 302-horizontal plate, 303-friction plate, 4-rotating plate, 5-rotating rod mounting seat, 6-rotating top rod, 601-slide groove, 7-rotating cylinder, 701-mounting bolt, 8-handle. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0020] like Figure 1As shown, a locking device for a hydropower station gantry crane comprises a U-shaped plate 1 sliding on a track with an opening facing downward, the U-shaped plate 1 comprises two side plates and a top plate, a handle 8 and a stopper for abutting and limiting a running wheel are mounted on the top plate of the U-shaped plate 1; a set of limiting components are respectively arranged on the two side plates of the U-shaped plate 1, and the two sets of limiting components are symmetrically arranged; the limiting components comprise an L-shaped clamping plate 3, a rotating plate 4 and a rotating top rod 6, the L-shaped clamping plate 3 comprises a horizontal plate 302 and a vertical plate 301, The lower end of the vertical plate 301 is hinged to the inner side of the side plate, and the horizontal plate 302 is connected to the upper end of the vertical plate 301. The horizontal plate 302 passes through the side plate and abuts against the lower end of the rotating plate 4; the middle part of the rotating plate 4 is hinged to the side plate, and the upper end of the rotating plate 4 abuts against the rotating top rod 6; rotating rod mounting seats 5 are installed on both ends of the top plate, and the rotating top rod 6 is placed horizontally. A thread is provided on the outward end of the rotating top rod 6, and the outward end of the rotating top rod 6 passes through the rotating rod mounting seat 5 and is threadedly connected to the rotating rod mounting seat 5.

[0021] The gantry crane of a hydropower station actually refers to the two-way gantry crane on the top of the dam of the hydropower station. The two-way gantry crane on the top of the dam moves on the track. The conventional locking is to permanently anchor the two-way gantry crane on the top of the dam after it moves to a specific position; or to use a specific locking structure to lock the two-way gantry crane on the top of the dam with a high locking strength. The two-way gantry crane on the top of the dam is large in size and weight, and it takes a certain amount of time to complete the permanent anchoring and locking with a specific locking structure. Before the locking device and permanent anchoring of the two-way gantry crane on the top of the dam are installed and locked, and when the power is suddenly cut off when the two-way gantry crane on the top of the dam is in use, the locking structure of the two-way gantry crane on the top of the dam cannot be put into operation in time, and the two-way gantry crane on the top of the dam is in an unlocked state.

[0022] The utility model is different from the permanent anchor or specific locking structure mentioned above. It is a temporary locking device used before the above locking method is installed or in an unexpected situation. In the unlocked state, the utility model takes the U-shaped plate 1 as the main body and moves along the track with the running wheel of the two-way gantry crane on the dam top; when locking is required, the U-shaped plate 1 is moved to the running wheel of the two-way gantry crane on the dam top, and the stopper on the top plate is used to press the running wheel. Then the rotating top rod 6 is rotated to move the two rotating top rods 6 outward, and the upper end of the rotating plate 4 is pushed outward during the movement. Since the middle part of the rotating plate 4 is hinged with the side plate, the lower end of the rotating plate 4 will be pushed inward, and the rotating plate 4 will abut against the horizontal plate 302, and then push the horizontal plate 302 and the vertical plate 301 to the inside of the side plate. After pushing, the vertical plates 301 of the left and right L-shaped clamping plates 3 clamp the track inward, and the locking of the utility model and the track is completed after clamping. It effectively prevents the movement of the two-way gantry crane on the dam top and has a good windproof effect.

[0023] Preferably, the stopper is a triangular prism 2, and the inclined surface of the triangular prism 2 is arranged toward the sliding direction of the track; the lower end of the inclined surface is located at the edge of the top plate, and the higher end of the inclined surface is located in the middle of the top plate. The triangular prism 2 has an inclined surface that is convenient for fitting the running wheels of the dam top two-way gantry crane. When in use, aligning the inclined surface and fitting it to the running wheels of the dam top two-way gantry crane can achieve a better blocking effect.

[0024] Furthermore, a buffer pad 201 is provided on the inclined surface of the triangular prism 2, and the inclined surface of the triangular prism 2 is arc-shaped and concave. The buffer pad 201 is provided to improve the buffering effect and also protect the triangular prism 2 from deformation and damage; the arc-shaped and concave inclined surface can increase the contact surface with the running wheel, and is not easily damaged when subjected to force.

[0025] Furthermore, a friction plate 303 is provided on one side of the vertical plate 301 for squeezing the track, and the side of the friction plate 303 that contacts the track is serrated. The friction plate 303 and the serrated structure of the friction plate 303 are used to increase the friction between the utility model and the track when the utility model is locked, so that the locking of the utility model is more stable.

[0026] Furthermore, a rotating cylinder 7 is arranged above the top plate, and cavities are arranged at both the left and right ends of the rotating cylinder 7, and the inward ends of the two rotating top rods 6 are respectively slidably connected in the cavities at the left and right ends of the rotating cylinder 7; a slide groove 601 is arranged on the side of the rotating top rod 6, and the direction of the slide groove 601 is the same as the axial direction of the rotating top rod 6; the rotating cylinder 7 is provided with two mounting bolts 701, and the mounting bolts 701 pass through the rotating cylinder 7 and are located in the slide groove 601 and are engaged with the slide groove 601. The rotating cylinder 7 is arranged to facilitate the control of the rotation of the rotating top rod 6. Since the mounting bolts 701 are engaged with the slide groove 601, the mounting bolts 701 can move axially along the rotating top rod 6 in the slide groove 601, and when the mounting bolts 701 rotate circumferentially along the rotating top rod 6, they will be restricted by the slide groove 601 and thus drive the rotating top rod 6 to rotate. When the rotating cylinder 7 rotates, it will drive the two rotating top rods 6 to rotate in the same direction as the rotating cylinder 7. During the rotation process, the rotating top rod 6 and the rotating rod mounting seat 5 are threadedly connected, and the rotating top rod 6 will move to both sides in the horizontal direction, and the slide groove 601 leaves enough space for the movement of the rotating top rod 6. The setting of the rotating cylinder 7 can facilitate the synchronous control of the two rotating top rods 6 at the same time, improve convenience, and the L-shaped clamping plates 3 on both sides can achieve the same degree of tightening.

[0027] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0028] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A locking device for a hydropower station gantry crane, characterized in that: The invention relates to a U-shaped plate (1) which slides on a track and has an opening facing downwards. The U-shaped plate (1) comprises two side plates and a top plate. A handle (8) and a stopper for abutting against and limiting a running wheel are mounted on the top plate of the U-shaped plate (1). A set of limit assemblies are respectively arranged on the two side plates of the U-shaped plate (1), and the two sets of limit assemblies are symmetrically arranged. The limit assemblies comprise an L-shaped clamping plate (3), a rotating plate (4) and a rotating top rod (6). The L-shaped clamping plate (3) comprises a horizontal plate (302) and a vertical plate (301). The lower end of the vertical plate (301) is hinged. The horizontal plate (302) is connected to the inner side of the side plate, and is connected to the upper end of the vertical plate (301). The horizontal plate (302) passes through the side plate and abuts against the lower end of the rotating plate (4). The middle part of the rotating plate (4) is hinged on the side plate, and the upper end of the rotating plate (4) abuts against the rotating top rod (6). The two ends of the top plate are provided with a rotating rod mounting seat (5), the rotating top rod (6) is placed horizontally, and a thread is arranged on the outward end of the rotating top rod (6). The outward end of the rotating top rod (6) passes through the rotating rod mounting seat (5) and is threadedly connected to the rotating rod mounting seat (5).

2. A locking device for a hydropower station gantry crane according to claim 1, characterized in that: The stopper is a triangular prism (2), the inclined surface of the triangular prism (2) being arranged towards the sliding direction of the track; the lower end of the inclined surface is located at the edge of the top plate, and the higher end of the inclined surface is located in the middle of the top plate.

3. A locking device for a hydropower station gantry crane according to claim 2, characterized in that: A buffer pad (201) is provided on the inclined surface of the triangular prism (2).

4. A locking device for a hydropower station gantry crane according to claim 2, characterized in that: The inclined surface of the triangular prism (2) is arc-shaped and concave.

5. The locking device for a hydropower station gantry crane according to claim 1, characterized in that: A friction plate (303) is provided on one side of the vertical plate (301) for pressing the track, and the side of the friction plate (303) that contacts the track is serrated.

6. The locking device for a hydropower station gantry crane according to claim 1, characterized in that: A rotating cylinder (7) is arranged above the top plate, and cavities are arranged at both left and right ends of the rotating cylinder (7), and the inward ends of the two rotating top rods (6) are respectively slidably connected in the cavities at the left and right ends of the rotating cylinder (7); a sliding groove (601) is arranged on the side surface of the rotating top rod (6), and the direction of the sliding groove (601) is the same as the axial direction of the rotating top rod (6); the rotating cylinder (7) is provided with two mounting bolts (701), and the mounting bolts (701) pass through the rotating cylinder (7) and are located in the sliding groove (601).

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