Adjustable river physical model

Abstract

The invention discloses an adjustable river physical model, and belongs to the technical field of river physical models, and the model comprises a plurality of columns which are provided with connecting mechanisms; the placement groove is formed in the stand column, a bearing seat is slidably connected into the placement groove, supporting rods are detachably connected to the bearing seat, and the tops of the multiple supporting rods are covered with a surface film; the adjusting mechanism and the limiting mechanism are both arranged on the bearing seat; according to the scheme, all the stand columns are connected through the connecting mechanisms, the supporting rods are limited and fixed through the limiting mechanisms, and then the heights of the bearing bases and the supporting rods are changed through the adjusting mechanisms, so that all the supporting rods can be located at the corresponding height positions according to the needs of a model; a large amount of time and labor are saved, the overall construction period is shortened, and practicability is high; in addition, all the stand columns, the supporting rods and all the components can be repeatedly used, waste is reduced, a large number of materials are saved, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of river engineering physical models, and more particularly to an adjustable river engineering physical model. Background Art

[0002] River engineering physical models are scaled-down representations of river systems created in laboratory environments. They are used to study flow, sediment movement, and riverbed evolution in natural or artificial rivers, as well as to simulate and analyze actual sluice gate operations. These models are invaluable for understanding complex hydrodynamic processes and testing engineering proposals. They are widely used in water conservancy projects, flood control planning, river regulation, and ecological restoration.

[0003] At present, the physical model of river engineering is constructed by manual construction using bricks, cement mortar, etc., and after the test of a sluice or river channel model is completed, it needs to be dismantled before the next physical model can be constructed. This process requires a lot of time and manpower, is labor-intensive, and has low efficiency in model making and dismantling, resulting in a long overall construction period. In addition, the dismantled model bricks and other materials cannot be reused, resulting in great waste.

[0004] Therefore, it is necessary to provide an adjustable river engineering physical model to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjustable river engineering physical model to solve the above technical problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An adjustable river engineering physical model, comprising:

[0008] There are multiple columns, each of which is provided with a connecting mechanism for connecting adjacent columns;

[0009] A placement groove is provided on the column, a receiving seat is slidably connected in the placement groove, a support rod is detachably connected to the receiving seat, and the tops of the plurality of support rods are covered with a surface film;

[0010] The adjusting mechanism and the limiting mechanism are both arranged on the receiving seat. The adjusting mechanism is used to change the height of the receiving seat and the support rod, and the limiting mechanism is used to connect and limit the support rod and the receiving seat.

[0011] Furthermore, the outer wall of the column is provided with a sliding groove and a slot communicating with the placement slot, the side wall of the sliding groove is provided with a plurality of fixing holes, and the slot is used to avoid the limiting mechanism.

[0012] Furthermore, the regulating mechanism includes:

[0013] An adjustment seat is provided on the receiving seat and is slidably connected to the side wall of the slide groove. An inner groove is provided inside the adjustment seat, and a fixing block adapted to the fixing hole is slidably connected to the inner wall of the inner groove.

[0014] A first elastic member has one end connected to the fixing block and the other end connected to the bottom wall of the inner groove.

[0015] Furthermore, a shift groove communicating with the inner groove is formed on the outer wall of the adjustment seat, and a push rod connected to the fixed block is slidably connected to the inner wall of the shift groove.

[0016] Furthermore, a sleeve block is provided on the outer wall of the adjustment seat, a hidden cavity is opened inside the sleeve block, a stop block is slidably connected to the inner wall of the hidden cavity, and a second elastic member is provided between the stop block and the bottom wall of the hidden cavity.

[0017] Furthermore, a socket is provided at the upper end of the receiving seat, and a plug post adapted to the socket is provided at the bottom of the support rod, and a limiting hole is provided on the plug post.

[0018] Furthermore, the limiting mechanism includes:

[0019] A limiting rod movably passes through the outer wall of the receiving seat, one end of the limiting rod is provided with a limiting block adapted to the limiting hole, and the other end is provided with a pulling plate;

[0020] A third elastic member has one end connected to the pull plate and the other end connected to the outer wall of the receiving seat.

[0021] Furthermore, the connecting mechanism includes:

[0022] Four collars are rotatably arranged on the outer wall of the column, and the four collars are located at different heights. Each collar is provided with a connecting sleeve, and two connecting sleeves on adjacent columns are connected by a connecting rod.

[0023] Furthermore, a plurality of retaining holes are provided on the connecting rod, and fastening bolts adapted to the retaining holes are threadedly connected to the connecting sleeve.

[0024] Furthermore, a positioning groove is provided on the inner wall of the placement groove, and a positioning bar is provided on the support rod and is slidably adapted to the positioning groove.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This solution connects the adjacent columns through a connecting mechanism, and then inserts the support rods into the placement slots of each column. The support rods are supported by the receiving seats in the placement slots, and the support rods are fixed by the limiting mechanism, which can improve the stability of the support rods and prevent the support rods from being displaced in the vertical direction. Then, the height of the receiving seats and the support rods is changed by the adjustment mechanism, that is, each support rod can be placed at a corresponding height position according to the needs of the model. Finally, the surface film is covered and fixed on the top of multiple support rods to form river channel models with different terrains, that is, multiple support rods in different positions form the bottom bracket of the model. This is different from the current physical models that are generally made by hand using bricks, cement mortar, etc., which saves a lot of time and manpower, has low labor intensity, and significantly improves the efficiency of river engineering physical model production and dismantling, shortens the overall construction period, and can make more models more quickly to conduct more experiments. It has high practicality and strong flexibility.

[0027] After the test is completed, the height of the support rod is changed through the adjustment mechanism to correspond to the specifications of the next model. When all adjustments are completed, the surface film is covered to form the next river engineering model. The whole process is faster and more convenient, and there is no need to repeatedly lay bricks, etc. The model making efficiency is high. In addition, the various columns, support rods and various components of this scheme can be reused, which reduces the current waste of demolition, saves a lot of materials and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the local state structure of the river engineering physical model of the present invention;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of one of the pillars of the present invention;

[0030] Figure 3 for Figure 2 A in the figure shows the enlarged structural diagram;

[0031] Figure 4 for Figure 2 A schematic diagram of the structure at point B in FIG.

[0032] Figure 5 This is a schematic structural diagram of the column of the present invention before being connected to the support rod;

[0033] Figure 6 for Figure 5 The enlarged structural diagram at C in FIG.

[0034] Figure 7 for Figure 5 The enlarged structural diagram at D in FIG.

[0035] Figure 8 It is a schematic cross-sectional view of the upright column and the adjustment seat of the present invention in a top view;

[0036] Figure 9 for Figure 8 The enlarged structural diagram at E in FIG.

[0037] Figure 10 It is a partial cross-sectional structural schematic diagram of the receiving seat of the present invention;

[0038] Figure 11 It is a schematic cross-sectional structural diagram of the sleeve block of the present invention;

[0039] Figure 12 It is a schematic diagram of a partial top view of the structure of the upper surface membrane of the column of the present invention.

[0040] Description of the numbers in the figure:

[0041] 1. Column; 2. Placement groove; 3. Receiver; 4. Support rod; 5. Connecting mechanism; 51. Ring; 52. Connecting sleeve; 53. Connecting rod; 6. Adjusting mechanism; 61. Adjusting seat; 62. Inner groove; 63. Fixed block; 64. First elastic member; 7. Limiting mechanism; 71. Limiting rod; 72. Limiting block; 73. Pull plate; 74. Third elastic member; 8. Slide groove; 9. Slot; 10. Fixing hole; 11. Shifting groove; 12. Push rod; 13. Sleeve block; 14. Hidden cavity; 15. Stopper; 16. Second elastic member; 17. Insertion hole; 18. Insertion column; 19. Limiting hole; 20. Positioning hole; 21. Fastening bolt; 22. Positioning groove; 23. Positioning strip; 24. Interconnection hole. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] See also Figure 1-12 , an adjustable river engineering physics model, including:

[0044] There are multiple columns 1, and a connecting mechanism 5 is provided on the column 1 for connecting adjacent columns 1;

[0045] A placement slot 2 is provided on the column 1, a receiving seat 3 is slidably connected to the placement slot 2, a support rod 4 is detachably connected to the receiving seat 3, and the tops of the plurality of support rods 4 are covered with a surface film;

[0046] The adjusting mechanism 6 and the limiting mechanism 7 are both arranged on the receiving seat 3. The adjusting mechanism 6 is used to change the height of the receiving seat 3 and the support rod 4. The limiting mechanism 7 is used to connect and limit the support rod 4 to the receiving seat 3.

[0047] During use, the number of columns 1 can be selected as needed. After placing the columns 1 in the designated position, the adjacent columns 1 are connected via the connecting mechanism 5, thereby forming multiple columns 1 into a whole, which can greatly improve the stability of the columns 1 during use and achieve good results. The support rods 4 are then inserted into the placement slots 2 of each column 1, thereby limiting the horizontal direction of the support rods 4. The support rods 4 are supported by the receiving seats 3 in the placement slots 2, and the support rods 4 are fixed in position by the limiting mechanism 7, that is, the support rods 4 and the receiving seats 3 are connected, thereby improving the stability of the support rods 4 and preventing the support rods 4 from vertical displacement.

[0048] Then, the height of the receiving seat 3 and the supporting rod 4 is changed by the adjusting mechanism 6, that is, each supporting rod 4 can be placed at a corresponding height position according to the needs of the model, and finally, a surface film is covered and fixed on the top of the plurality of supporting rods 4. After the height of the different supporting rods 4 is adjusted by the adjusting mechanism 6, a river channel model with different terrains can be formed by supporting the surface film. Then, water is injected into the surface film. After the uneven surface film is adjusted, a river channel model can be formed, and the operation of the river or river channel and the sluice gate can be studied. That is, the supporting rods 4 at multiple different positions form the bottom support of the model, thereby different from the current physical model generally constructed by artificially using bricks, cement mortar, etc., saving a lot of time and manpower, low labor intensity, significantly improving the efficiency of river engineering physical model production and dismantling, shortening the overall construction period, and being able to make more models more quickly for more experiments. It has high practicality, strong flexibility, can be adjusted according to different model requirements, and has good use effect.

[0049] And after the test is completed, it is only necessary to remove the surface film on the support rod 4 and clean it, and then change the height of the support rod 4 through the adjustment mechanism 6. By changing the position of the support rod 4, it corresponds to the specifications of the next model. When all adjustments are completed, the surface film is covered to form the next river model. The whole process is faster and more convenient, and there is no need to repeatedly lay bricks, etc. The model making efficiency is high. In addition, the various columns 1 and support rods 4 and various components of this solution can be reused, which reduces the current waste of demolition, saves a lot of materials, and reduces costs.

[0050] The support rods 4 at the four corners of the surface film can be placed at the highest position, so that the altitude of the middle support rod 4 is lower than the four corners, which prevents water from overflowing from the corners. Figure 12 This is a simplified diagram of the surface membrane from above. The multiple circles on the surface membrane are protrusions supported by the support rods 4, and the ends of the support rods 4 are fixed to the surface membrane.

[0051] The bottom of the columns 1 is provided with a fixed base plate, which is fixed to the ground with bolts, or it can be fixed to a steel plate with threaded holes. After the columns 1 are connected into a whole by the connecting mechanism 5, only the fixed base plates at the bottom of some columns 1 need to be fixed to ensure the stability of the entire model and prevent the model from shifting.

[0052] Preferably, see Figure 2 and Figure 4-6 The outer wall of the column 1 is provided with a slide groove 8 and a slot 9 communicating with the placement groove 2. The side wall of the slide groove 8 is provided with multiple fixing holes 10. The slot 9 is used to avoid the limiting mechanism 7.

[0053] Specifically, the adjustment mechanism 6 can slide up and down along the slot 9, thereby driving the receiving seat 3 to move up and down, and the adjustment mechanism 6 limits and fixes the position of the receiving seat 3 by cooperating with the fixing hole 10. The limiting mechanism 7 moves up and down along the slot 9 as the receiving seat 3 moves.

[0054] In this embodiment, preferably, please refer to 2. Figure 4-6 and Figure 8-9 , the regulating mechanism 6 includes:

[0055] The adjusting seat 61 is provided on the receiving seat 3 and is slidably connected to the side wall of the slide groove 8. An inner groove 62 is provided inside the adjusting seat 61. A fixing block 63 adapted to the fixing hole 10 is slidably connected to the inner wall of the inner groove 62.

[0056] One end of the first elastic member 64 is connected to the fixing block 63 , and the other end is connected to the bottom wall of the inner groove 62 . The first elastic member 64 in this solution can be a spring.

[0057] Specifically, when adjusting the height of the receiving seat 3, the fixing block 63 is first moved toward the inner groove 62 and the first elastic member 64 is compressed until the fixing block 63 is disengaged from the fixing hole 10 of the side wall of the slide groove 8. At this time, the adjusting seat 61 is no longer restricted, and the adjusting seat 61 can be driven to slide along the slide groove 8. The adjusting seat 61 drives the receiving seat 3 to move up and down, and then adjusts the height of the support rod 4 through the receiving seat 3. When the adjustment is completed, the restriction of the fixing block 63 is released, and the rebound force of the first elastic member 64 can drive the fixing block 63 to move, and finally the fixing block 63 is moved out of the inner groove 62 and into the corresponding fixing hole 10, so that the adjusting seat 61 is limited and fixed by the cooperation of the fixing block 63 and the fixing hole 10, that is, the receiving seat 3 and the support rod 4 can be restricted and fixed, thereby ensuring the height stability of the support rod 4 at this time.

[0058] Preferably, see Figure 4 、 Figure 6 and Figure 8-9The outer wall of the adjustment seat 61 is provided with a shift groove 11 communicating with the inner groove 62 , and the inner wall of the shift groove 11 is slidably connected to a push rod 12 connected to the fixed block 63 .

[0059] With this design, by pushing the push rod 12 to move along the shifting groove 11 , the push rod 12 can drive the fixed block 63 to move, thereby making it more convenient to move the fixed block 63 , easy to operate, and having good practicality.

[0060] In this embodiment, preferably, please refer to Figure 4-6 and Figure 11 The outer wall of the adjustment seat 61 is also provided with a sleeve block 13, a hidden cavity 14 is opened inside the sleeve block 13, the inner wall of the hidden cavity 14 is slidably connected with a stopper 15, and a second elastic member 16 is provided between the stopper 15 and the bottom wall of the hidden cavity 14. The second elastic member 16 in this solution can be a spring.

[0061] With this design, when the push rod 12 is pushed to move the fixed block 63, the push rod 12 can squeeze the stopper 15 to move it toward the hidden cavity 14 and compress the second elastic member 16. When the push rod 12 passes the stopper 15, the rebound force of the second elastic member 16 will drive the stopper 15 to move back to its original position. At this time, the stopper 15 will block the push rod 12, and after releasing the push rod 12, the push rod 12 and the fixed block 63 will not be reset. Then, the adjusting seat 61 can be moved more conveniently to drive the receiving seat 3 to move. After moving to the designated position, the stopper 15 is pressed again to enter the hidden cavity 14. After the push rod 12 is no longer under pressure, the first elastic member 64 can drive the fixed block 63 to reset and enter the fixing hole 10.

[0062] In this embodiment, preferably, please refer to Figure 5-8 The upper end of the receiving seat 3 is provided with a socket 17, and the bottom of the support rod 4 is provided with a plug post 18 adapted to the socket 17, and a limiting hole 19 is provided on the plug post 18.

[0063] Specifically, when the support rod 4 is inserted into the placement groove 2 of the column 1, the insertion column 18 at the bottom of the support rod 4 will gradually be inserted into the socket 17 of the receiving seat 3. While the support rod 4 is supported by the receiving seat 3, the limiting mechanism 7 limits the vertical direction of the support rod 4 through the cooperation of the limiting hole 19.

[0064] In this embodiment, preferably, please refer to Figure 6-8 and Figure 10 , the limiting mechanism 7 includes:

[0065] A limiting rod 71 is movable and passes through the outer wall of the receiving seat 3. One end of the limiting rod 71 is provided with a limiting block 72 adapted to the limiting hole 19, and the other end is provided with a pull plate 73;

[0066] One end of the third elastic member 74 is connected to the pull plate 73, and the other end is connected to the outer wall of the receiving seat 3. The third elastic member 74 in this solution can be a spring.

[0067] With this design, the upper end surface of the limit block 72 is an inclined surface. When the plug post 18 of the support rod 4 is inserted into the insertion hole 17, the plug post 18 will squeeze the limit block 72, causing the limit block 72 to move toward the outer wall of the receiving seat 3. At this time, the limit block 72 will also move the limit rod 71 and the pull plate 73, and stretch the third elastic member 74. When the plug post 18 is inserted into place, the limit hole 19 is located at the position of the limit block 72. The rebound force of the third elastic member 74 will drive the limit rod 71 and the limit block 72 to move, and finally the limit block 72 will enter the limit hole 19 of the plug post 18, thereby limiting the plug post 18 and the support rod 4. In other words, the vertical displacement of the support rod 4 is restricted, ensuring the stability of the support rod 4.

[0068] In this embodiment, preferably, please refer to Figure 1-3 and Figure 5 , the connecting mechanism 5 includes:

[0069] Four collars 51 are rotatably mounted on the outer wall of the column 1 , and the four collars 51 are located at different heights. Each collar 51 is provided with a connecting sleeve 52 , and two connecting sleeves 52 on adjacent columns 1 are connected by a connecting rod 53 .

[0070] Specifically, two connecting sleeves 52 of adjacent columns 1 can be connected via a connecting rod 53, interconnecting multiple columns 1 and thereby further stabilizing the entire model. Furthermore, the collar 51 can be rotated around the outer wall of the column 1, allowing the connecting sleeve 52 to be rotated to different positions. This allows for adjustable connection of columns 1 and connecting sleeves 52 at different angles, providing high flexibility and enabling adjacent connections to be made using connecting sleeves 52 of corresponding heights as needed, resulting in excellent performance.

[0071] In this embodiment, preferably, please refer to Figure 2-3 A plurality of positioning holes 20 are provided on the connecting rod 53 , and a fastening bolt 21 adapted to the positioning holes 20 is threadedly connected to the connecting sleeve 52 .

[0072] With this design, by loosening the fastening bolt 21 to disengage the retaining hole 20, the connecting rod 53 can be driven to move along the connecting sleeve 52, thereby adjusting the extension length of the connecting rod 53 as needed. After adjustment, the fastening bolt 21 is tightened again to insert it into the retaining hole 20 at the corresponding position, thereby fixing the connecting rod 53.

[0073] Furthermore, the connecting rod 53 can be detached from the connecting sleeve 52 , so that a longer or shorter connecting rod 53 can be selected for connection to meet different connection requirements.

[0074] In this embodiment, preferably, please refer to Figure 5 and Figure 7-8 A positioning groove 22 is provided on the inner wall of the placement groove 2, and a positioning strip 23 that is slidably matched with the positioning groove 22 is provided on the support rod 4.

[0075] With this design, when the support rod 4 is inserted into the placement groove 2 of the column 1, the positioning strip 23 of the support rod 4 is inserted into the positioning groove 22, thereby positioning the support rod 4 and ensuring that the plug post 18 of the support rod 4 can be accurately inserted into the insertion hole 17 of the receiving seat 3, avoiding the need to rotate and adjust the position of the support rod 4 later, saving time and effort and achieving good use effect. At the same time, it can also improve the movement stability of the support rod 4 in the placement groove 2.

[0076] Preferably, see Figure 1-2 A plurality of interconnecting holes 24 are provided on the support rods 4, and ropes can be passed through the interconnecting holes 24, so that the support rods 4 can be further connected by ropes, which can better improve the stability of the model.

[0077] It should be understood that the examples and implementation methods described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0078] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0079] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An adjustable river engineering physical model, characterized in that: include: A plurality of columns (1) are provided, and a connecting mechanism (5) is provided on the columns (1) for connecting adjacent columns (1); A placement groove (2) is provided on the column (1); a receiving seat (3) is slidably connected in the placement groove (2); a support rod (4) is detachably connected to the receiving seat (3); and the tops of the plurality of support rods (4) are covered with a surface film; The adjusting mechanism (6) and the limiting mechanism (7) are both arranged on the receiving seat (3); the adjusting mechanism (6) is used to change the height of the receiving seat (3) and the support rod (4); and the limiting mechanism (7) is used to connect and limit the support rod (4) with the receiving seat (3).

2. The adjustable river engineering physical model according to claim 1, characterized in that: The outer wall of the column (1) is provided with a sliding groove (8) and a slot (9) communicating with the placement groove (2); the side wall of the sliding groove (8) is provided with a plurality of fixing holes (10); and the slot (9) is used to avoid the limiting mechanism (7).

3. The adjustable river engineering physical model according to claim 2, characterized in that: The regulating mechanism (6) comprises: An adjusting seat (61) is provided on the receiving seat (3) and is slidably connected to the side wall of the slide groove (8); an inner groove (62) is provided inside the adjusting seat (61); a fixing block (63) adapted to the fixing hole (10) is slidably connected to the inner wall of the inner groove (62); A first elastic member (64) has one end connected to the fixing block (63) and the other end connected to the bottom wall of the inner groove (62).

4. The adjustable river engineering physical model according to claim 3, characterized in that: The outer wall of the adjustment seat (61) is provided with a shift groove (11) communicating with the inner groove (62), and the inner wall of the shift groove (11) is slidably connected with a push rod (12) connected to the fixed block (63).

5. The adjustable river engineering physical model according to claim 4, characterized in that: The outer wall of the adjustment seat (61) is further provided with a sleeve block (13), a hidden cavity (14) is provided inside the sleeve block (13), a stop block (15) is slidably connected to the inner wall of the hidden cavity (14), and a second elastic member (16) is provided between the stop block (15) and the bottom wall of the hidden cavity (14).

6. The adjustable river engineering physical model according to claim 1, characterized in that: The upper end of the receiving seat (3) is provided with a socket (17), the bottom of the support rod (4) is provided with an inserting column (18) adapted to the socket (17), and a limiting hole (19) is provided on the inserting column (18).

7. The adjustable river engineering physical model according to claim 6, characterized in that: The limiting mechanism (7) comprises: A limiting rod (71) is movably inserted through the outer wall of the receiving seat (3); one end of the limiting rod (71) is provided with a limiting block (72) adapted to the limiting hole (19), and the other end is provided with a pulling plate (73); A third elastic member (74) has one end connected to the pull plate (73) and the other end connected to the outer wall of the receiving seat (3).

8. The adjustable river engineering physical model according to claim 1, characterized in that: The connecting mechanism (5) comprises: Four collars (51) are rotatably arranged on the outer wall of the column (1), and the four collars (51) are located at different heights. Each collar (51) is provided with a connecting sleeve (52), and two connecting sleeves (52) on adjacent columns (1) are connected via a connecting rod (53).

9. The adjustable river engineering physical model according to claim 8, characterized in that: The connecting rod (53) is provided with a plurality of locking holes (20), and the connecting sleeve (52) is threadedly connected with a fastening bolt (21) adapted to the locking holes (20).

10. The adjustable river engineering physical model according to claim 8, characterized in that: A positioning groove (22) is provided on the inner wall of the placement groove (2), and a positioning strip (23) is provided on the support rod (4) and is slidably matched with the positioning groove (22).

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