Hydraulic model tail gate device

Abstract

The utility model discloses a hydraulic model tail gate device which comprises a door frame, the edge of the door frame is connected with a supporting wall of a U-shaped structure, a door plate group is connected in the door frame, the top of the supporting wall is connected with a supporting structure, the supporting structure is connected with a driving unit, and the driving unit is connected with the door plate group. The device is simple in structure, convenient to disassemble and assemble, high in failure rate caused by a complex structure, capable of meeting the requirement for rapidly adjusting the water level in a hydraulic model through the combination of the crank connecting rod mechanism and the door plate marshalling, capable of reducing test time consumption, simple in amplification and reduction of the door plate marshalling, capable of adapting to models of different scales, high in repeated utilization rate and low in cost. The door plate groups composed of the door plates are closed or opened at the same time, full-section overflowing is achieved, vertical distribution of water flow is not changed, the similarity of a model flow field and a prototype is guaranteed, and the situation of water leakage is greatly avoided through sealing rubber strips on the edges of the door plates.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic model testing equipment, specifically relating to a hydraulic model tailgate device. Background Technology

[0002] In the design of water conservancy and hydropower projects, hydraulic model testing is an important research method for verifying the rationality of the design and optimizing it. During the test, it is necessary to control the water level of the model quickly, accurately, and stably to ensure the similarity between the model and the prototype. The model typically uses a flap gate to control the water level. This device is simple in design, with the flap gate's pivot located on the base; the water level is changed by adjusting the height of the gate top. Traditional flap gates are a type of overflow device. When water flows near the tailgate, the water from the bottom and middle layers is completely deflected towards the surface, resulting in a severe imbalance in flow velocity among the surface, middle, and bottom layers near the tailgate. This causes the flow field at the end of the model to be dissimilar to the prototype, affecting the accuracy of the test. To eliminate this effect, it is often necessary to increase the length of the model, but this correspondingly increases the model manufacturing cost and requires a larger site area. Utility Model Content

[0003] The purpose of this invention is to provide a tailgate device for hydraulic models, which solves the problem of low test accuracy caused by uneven water flow velocity in different layers near the tailgate in the prior art.

[0004] The technical solution adopted by this utility model is a hydraulic model tailgate device, including a door frame, a U-shaped support wall connected to the edge of the door frame, a door panel assembly connected inside the door frame, a support structure connected to the top of the support wall, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0005] The features of this utility model also include:

[0006] The door panel group consists of several door panels arranged side by side, with the door panels sandwiched inside the door frame. Each door panel is connected to a drive unit, and the total width of the door panels is the same as the width of the door frame.

[0007] The support structure includes a first base and a second base. The bottom of the second base is connected to an opening end of the support wall. A second support rod is connected to the second base. A sliding groove is provided at the other opening end of the support wall and is connected to the first base. The top of the first base is connected to the first support rod. A drive unit is connected between the first support rod and the second support rod.

[0008] The drive unit includes a crank handle, one end of which is connected to a lead screw. The body of the lead screw is connected to a drive ring via a thread. The bottom of the drive ring is connected to a first support rod. A connecting unit is connected to the side of the drive ring away from the crank handle. The connecting unit is connected to a second support rod and is also connected to each door panel.

[0009] The connecting unit includes a control lever, one end of which is connected to a drive ring, and the other end of which is slidably connected to the end of a second support rod. The lever body is connected to each door panel via a crank-connecting rod assembly.

[0010] A limit sleeve is connected to the end of the control rod near the second support rod, and the length of the lead screw is not greater than the length of the slide groove.

[0011] The crank-connecting rod assembly includes several connecting rods evenly connected along the length of the control rod. Each connecting rod has a crank connected to its shaft by a pin. The end of the crank away from the connecting rod is connected to a door hinge. Each door hinge is connected to the door panel in a one-to-one correspondence.

[0012] The door frame has corresponding holes on opposite sides, and each door hinge passes through the corresponding hole, with the crank connected to the end of the door hinge.

[0013] The door hinge is connected to the axis of the door panel.

[0014] Each door panel has a sealing strip attached to its edge.

[0015] The beneficial effects of this utility model are:

[0016] This utility model's tailgate device for hydraulic models features a simple structure, facilitating disassembly and installation and avoiding the high failure rate associated with complex structures. Through a combination of a crank-connecting rod mechanism and gate panel groups, it enables rapid water level adjustment in hydraulic models, reducing testing time. The gate panel groups are easily expanded and reduced, adaptable to models of different sizes, and have a high reusability rate. Multiple gate panels can be simultaneously closed or opened, achieving full-section flow without altering the vertical distribution of water flow, ensuring the similarity between the model's flow field and the prototype. Sealing strips along the gate panel edges greatly prevent water leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the tailgate device for the hydraulic model of this utility model;

[0018] Figure 2 This is a top view of the crank-connecting rod structure of this utility model.

[0019] In the diagram: 1. Door panel, 2. Door hinge, 3. Crank, 4. Connecting rod, 5. Control lever, 6. First base, 61. Second base, 62. Second support rod, 63. First support rod, 7. Hand crank, 8. Door frame, 9. Support wall, 10. Lead screw, 11. Drive ring. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] This utility model provides a tailgate device for hydraulic models, such as Figure 1As shown, the device includes a door frame 8, with a U-shaped support wall 9 connected to the edge of the door frame 8. Door panel assemblies are connected inside the door frame 8, and a support structure is connected to the top of the support wall 9. A drive unit is connected to the support structure and is connected to the door panel assemblies. The U-shaped support wall 9 serves as the stabilizing structure of the device. The door frame 8 is installed inside the support wall 9, and the door panel assemblies are installed inside the door frame 8, surrounding the door panel assemblies. Depending on the scale of different hydraulic models, the door panel assemblies can be expanded or reduced. The drive unit passes through the door frame and connects to the door panel assemblies, driving the door panel assemblies to open and close, achieving full-section flow without altering the vertical distribution of the water flow, thus ensuring the accuracy of the experiment.

[0022] Example 1

[0023] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0024] The gate panel assembly includes several gate panels 1 arranged side by side, which are sandwiched within a gate frame 8. Each gate panel 1 is connected to a drive unit, and the total width of the gate panels 1 is the same as the width of the gate frame 8. The number of gate panels 1 is determined according to the scale of the hydraulic model. The drive unit drives the gate panels 1 to rotate, thereby opening and closing the gate panels 1 to interrupt or allow the water flow without changing the vertical distribution of the water flow.

[0025] Example 2

[0026] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0027] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0028] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. A second support rod 62 is connected to the second base 61. A sliding groove is formed at the other open end of the support wall 9, and the sliding groove is connected to the first base 6. A first support rod 63 is connected to the top of the first base 6. The drive unit is connected between the first support rod 63 and the second support rod 62. The first base 6 and the second base 61 serve as support devices for the drive unit. The length direction of the sliding groove is set along the width direction of the support wall 9, and the first base 6 can slide along the sliding groove.

[0029] Example 3

[0030] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0031] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0032] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0033] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. A drive ring 11 is threadedly connected to the body of the lead screw 10. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and also to each door panel 1. By rotating the crank handle 7, the lead screw 10 rotates, causing the drive ring 11 to move horizontally along the length of the lead screw 10. During this movement, the drive ring 11 carries the first base 6 along the slide groove via the first support rod 63. The drive ring 11 also drives the connecting unit to move, which in turn causes the door panel to rotate, thus opening and closing the door panel 1.

[0034] Example 4

[0035] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0036] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0037] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0038] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. The body of the lead screw 10 is connected to a drive ring 11 by a thread. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and is also connected to each door panel 1.

[0039] The connecting unit includes a control lever 5. One end of the control lever 5 is connected to the drive ring 11, and the other end of the control lever 5 is slidably connected to the end of the second support rod 62. The lever body is connected to each door panel 1 via a crank-connecting rod assembly. Turning the rocker handle 7 causes the lead screw 10 to rotate, and the drive ring 11 moves horizontally along the length of the lead screw 10. During the movement, the drive ring 11 drives the control lever 5 to move. When the control lever 5 moves, it slides at the end of the second support rod 62. During the movement of the control lever 5, the door panel 1 is rotated via the crank-connecting rod assembly, thereby opening and closing the door panel 1.

[0040] Example 5

[0041] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0042] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0043] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0044] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. The body of the lead screw 10 is connected to a drive ring 11 by a thread. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and is also connected to each door panel 1.

[0045] The connecting unit includes a control lever 5, one end of which is connected to the drive ring 11, and the other end of which is slidably connected to the end of the second support rod 62. The lever body is connected to each door panel 1 through a crank-connecting rod assembly.

[0046] A limiting sleeve is connected to the end of the control lever 5 near the second support rod 62, and the length of the lead screw 10 is not greater than the length of the slide groove. The limiting sleeve is set to prevent the control lever 5 from falling off the end of the second support rod 62 during movement. The length of the slide groove is the same as the length of the lead screw 10 to ensure that the drive ring 11 will not fall off the lead screw 10 during movement.

[0047] Example 6

[0048] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0049] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0050] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0051] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. The body of the lead screw 10 is connected to a drive ring 11 by a thread. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and is also connected to each door panel 1.

[0052] The connecting unit includes a control lever 5, one end of which is connected to the drive ring 11, and the other end of which is slidably connected to the end of the second support rod 62. The lever body is connected to each door panel 1 through a crank-connecting rod assembly.

[0053] The end of the control lever 5 near the second support rod 62 is connected to a limit sleeve, and the length of the lead screw 10 is not greater than the length of the slide groove.

[0054] The crank-connecting rod assembly includes several connecting rods 4 evenly connected along the length of the control rod 5. Each connecting rod 4 is connected to a crank 3 via a pin. The end of the crank 3 furthest from the connecting rod 4 is connected to a door hinge 2. Each door hinge 2 is connected to a door panel 1 in a one-to-one correspondence. For example... Figure 2As shown, each connecting rod 4 is also connected to the control rod 5 by a pin. The pin between the connecting rod 4 and the control rod 5 is pin m. During the movement of the control rod 5, the control rod 5 transmits power to the connecting rod 4. The pin m between the two moves from point o to point o'. The connecting rod 4 drives the crank 3 to perform crank-connecting rod motion. The pin between the connecting rod 4 and the crank 3 is pin n. The pin n between the two moves from point p to point p', causing the crank 3 to drive the door hinge 2 to rotate around the door hinge 2 as the center, thereby driving the door panel 1 to rotate and realize the opening and closing of the door panel 1.

[0055] Example 7

[0056] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0057] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0058] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0059] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. The body of the lead screw 10 is connected to a drive ring 11 by a thread. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and is also connected to each door panel 1.

[0060] The connecting unit includes a control lever 5, one end of which is connected to the drive ring 11, and the other end of which is slidably connected to the end of the second support rod 62. The lever body is connected to each door panel 1 through a crank-connecting rod assembly.

[0061] The end of the control lever 5 near the second support rod 62 is connected to a limit sleeve, and the length of the lead screw 10 is not greater than the length of the slide groove.

[0062] The crank-connecting rod assembly includes several connecting rods 4 evenly connected along the length of the control rod 5. Each connecting rod 4 is connected to a crank 3 by a pin. The end of the crank 3 away from the connecting rod 4 is connected to a door hinge 2. Each door hinge 2 is connected to the door panel 1 in a one-to-one correspondence.

[0063] The door frame 8 has corresponding through holes on its opposite sides, and each door hinge 2 passes through the corresponding through hole. The crank 3 is connected to the end of the door hinge 2. Several through holes are evenly distributed along the length of the opposite sides of the door frame 8. The through holes on the upper and lower sides of the door frame 8 are arranged opposite each other, and the opposite through holes correspond to the door panel 1.

[0064] Example 8

[0065] The tailgate device of the hydraulic model includes a door frame 8, a U-shaped support wall 9 connected to the edge of the door frame 8, a door panel assembly connected inside the door frame 8, a support structure connected to the top of the support wall 9, a drive unit connected to the support structure, and the drive unit connected to the door panel assembly.

[0066] The door panel group includes several door panels 1 arranged side by side, several door panels 1 are sandwiched in the door frame 8, each door panel 1 is connected to the drive unit, and the total width of several door panels 1 is the same as the width of the door frame 8.

[0067] The support structure includes a first base 6 and a second base 61. The bottom of the second base 61 is connected to an open end of the support wall 9. The second base 61 is connected to a second support rod 62. The other open end of the support wall 9 is provided with a sliding groove, which is connected to the first base 6. The top of the first base 6 is connected to a first support rod 63. The drive unit is connected between the first support rod 63 and the second support rod 62.

[0068] The drive unit includes a crank handle 7, one end of which is connected to a lead screw 10. The body of the lead screw 10 is connected to a drive ring 11 by a thread. The bottom of the drive ring 11 is connected to a first support rod 63. A connecting unit is connected to the side of the drive ring 11 away from the crank handle 7. The connecting unit is connected to a second support rod 62 and is also connected to each door panel 1.

[0069] The connecting unit includes a control lever 5, one end of which is connected to the drive ring 11, and the other end of which is slidably connected to the end of the second support rod 62. The lever body is connected to each door panel 1 through a crank-connecting rod assembly.

[0070] The end of the control lever 5 near the second support rod 62 is connected to a limit sleeve, and the length of the lead screw 10 is not greater than the length of the slide groove.

[0071] The crank-connecting rod assembly includes several connecting rods 4 evenly connected along the length of the control rod 5. Each connecting rod 4 is connected to a crank 3 by a pin. The end of the crank 3 away from the connecting rod 4 is connected to a door hinge 2. Each door hinge 2 is connected to the door panel 1 in a one-to-one correspondence.

[0072] The door frame 8 has corresponding holes on its two opposite sides, and each door hinge 2 passes through the corresponding hole. The crank 3 is connected to the end of the door hinge 2.

[0073] The door hinge 2 is connected to the axis of the door panel 1.

[0074] Each door panel 1 has a sealing strip attached to its edge. The sealing strip prevents water leakage.

[0075] The working principle of the tailgate device for this hydraulic model is as follows:

[0076] Crank handle 7, causing control lever 5 to move. The pin between control lever 5 and connecting rod 4 moves from point O to point O'. Control lever 5 transmits power to connecting rod 4. The pin between connecting rod 4 and crank 3 moves from position P to position P'. Connecting rod 4 drives crank 3 in a crank-connecting rod motion, causing crank 3 to rotate door hinge 2 counterclockwise by an angle around door hinge 2. Door hinge 2 then rotates door panel 1 counterclockwise by an angle around door hinge 2, from door panel position Q to door panel position Q'. When the rotation angle is 0 degrees, all door panels 1 are closed, and the water level reaches the highest level. When the rotation angle is 90 degrees, all door panels 1 are fully open, and the water level is the lowest level. By controlling the opening angle of each door panel 1 in the door panel group between 0° and 90°, the water level can be adjusted to the required level under different water flow conditions.

[0077] This utility model's tailgate device for hydraulic models features a simple structure, facilitating disassembly and installation, and avoiding the high failure rate associated with complex structures. It is suitable for widespread application in teaching, research, and production. Through a combination of a crank-connecting rod mechanism and gate panel groups, it enables rapid water level adjustment in hydraulic models, reducing experimental time. The gate panel groups are easily expanded and reduced, adaptable to models of different sizes, and offer high recyclability. Multiple gate panels can be simultaneously closed or opened, achieving full-section flow and ensuring the similarity of the model's flow field to the prototype. The sealing strips along the gate panel edges greatly prevent water leakage.

Claims

1. A tailgate device for a hydraulic model, characterized in that, Includes a door frame (8), the edge of which is connected to a U-shaped support wall (9), a door panel assembly is connected inside the door frame (8), a support structure is connected to the top of the support wall (9), a drive unit is connected to the support structure, and the drive unit is connected to the door panel assembly.

2. The tailgate device for hydraulic model according to claim 1, characterized in that, The door panel group includes several door panels (1) arranged side by side. Several door panels (1) are sandwiched in the door frame (8). Each door panel (1) is connected to the drive unit. The total width of several door panels (1) is the same as the width of the door frame (8).

3. The tailgate device for hydraulic model according to claim 1, characterized in that, The support structure includes a first base (6) and a second base (61). The bottom of the second base (61) is connected to an open end of the support wall (9). The second base (61) is connected to a second support rod (62). The other open end of the support wall (9) is provided with a sliding groove, which is connected to the first base (6). The top of the first base (6) is connected to a first support rod (63). The drive unit is connected between the first support rod (63) and the second support rod (62).

4. The tailgate device for hydraulic model according to claim 3, characterized in that, The drive unit includes a crank handle (7), one end of which is connected to a lead screw (10). The body of the lead screw (10) is connected to a drive ring (11) by a thread. The bottom of the drive ring (11) is connected to a first support rod (63). A connecting unit is connected to the side of the drive ring (11) away from the crank handle (7). The connecting unit is connected to a second support rod (62). The connecting unit is also connected to each door panel (1).

5. The tailgate device for hydraulic model according to claim 4, characterized in that, The connecting unit includes a control rod (5), one end of which is connected to a drive ring (11), and the other end of which is slidably connected to the end of a second support rod (62). The rod body of the control rod (5) is connected to each door panel (1) through a crank-connecting rod assembly.

6. The tailgate device for hydraulic model according to claim 5, characterized in that, The end of the control rod (5) near the second support rod (62) is connected to a limit sleeve, and the length of the lead screw (10) is not greater than the length of the groove.

7. The tailgate device for hydraulic model according to claim 5, characterized in that, The crank-connecting rod assembly includes several connecting rods (4) that are evenly connected along the length of the control rod (5). Each connecting rod (4) is connected to a crank (3) by a pin. The end of the crank (3) away from the connecting rod (4) is connected to a door hinge (2). Each door hinge (2) is connected to a door panel (1) in a one-to-one correspondence.

8. The tailgate device for hydraulic model according to claim 7, characterized in that, The door frame (8) has corresponding through holes on its two opposite sides, and each door hinge (2) passes through the corresponding through hole. The crank (3) is connected to the end of the door hinge (2).

9. The tailgate device for hydraulic model according to claim 7, characterized in that, The door hinge (2) is connected to the axis of the door panel (1).

10. The tailgate device for a hydraulic model according to claim 9, characterized in that, Each of the door panels (1) has a sealing strip attached to its edge.

Images