Water conservancy project civil engineering experiment device

Abstract

The utility model provides a hydraulic engineering civil engineering experiment device which is provided with a shell, a cavity is arranged in the shell, two partition plates are arranged in the cavity along the length direction of the shell at intervals, the lower partition plate is a lower partition plate, and the other partition plate is a middle partition plate. A rotating motor is arranged between the lower partition plate and the middle partition plate, the rotating shaft end of the rotating motor penetrates through the middle partition plate and then is sequentially in transmission connection with two gears from bottom to top, the gear located on the upper portion is an upper gear, and the other gear is a driving gear. The device is easy to operate, the anti-seismic results of the same concrete sample block under different vibration strengths can be obtained without repeatedly operating the device for adjustment, the anti-seismic results of different concrete sample blocks under the same vibration strength can also be obtained, and the device has the characteristics of portability and high efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering experimental devices, and particularly relates to a civil engineering experimental device for water conservancy projects. Background Technique

[0002] Civil engineering experiments are an essential process in the scientific research of water conservancy projects. There are mainly two types, namely exploratory tests and verification tests. Exploratory tests are conducted for scientific research and the development of new technologies (materials, processes, structural forms), etc. without knowing the experimental results; while verification tests are mainly to explore the structural performance and laws and analyze and draw research conclusions. Among them, verification tests are the most common test types in water conservancy projects.

[0003] Among them, the most common verification test in civil engineering experiments is the seismic performance detection of concrete specimens. In order to first obtain the preliminary seismic performance of the specimens, simple seismic tests are generally carried out at the construction site. After ensuring that the specimens can withstand a certain degree of vibration, the concrete represented by the sample concrete can be used for construction. However, when the existing civil engineering experimental devices for water conservancy projects conduct experiments on specimens, all test boxes can only test the seismic performance of specimens under one vibration force state. If it is necessary to test the seismic performance of multiple specimens, the device needs to be stopped and operated repeatedly for many times. Therefore, while the operation of the device is cumbersome, the test efficiency is relatively low, and thus the user experience is not good. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a civil engineering experimental device for water conservancy projects.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A water conservancy engineering civil engineering experimental device, comprising a shell, a cavity arranged in the shell, two partitions arranged in the cavity and along the length direction of the shell, wherein the partition located at the bottom is a lower partition, and the other partition is a middle partition, a rotating motor is arranged between the lower partition and the middle partition, and the rotating shaft end of the rotating motor passes through the middle partition and is sequentially connected with two gears from bottom to top for transmission, wherein the gear located at the top is the upper gear, and the other gear is the driving gear; the two sides of the driving gear are respectively connected by a reduction gear with a specification smaller than the driving gear The gear meshes with the speed change wheel, the specification of the speed change wheel is larger than that of the reduction gear, and a long transmission shaft is installed on the top of each speed change wheel; the two sides of the upper gear are respectively meshed with two meshing gears fixed on the inner wall of the outer shell, and a short transmission shaft is installed on the upper end of each meshing gear; eccentric blocks are respectively arranged above the long rotating shaft and the short transmission shaft, and vibration is generated when the eccentric blocks rotate; a protective shell is arranged at the upper end of the outer shell, and the upper end of the eccentric block contacts and shakes the vibration plate installed inside the protective shell, and a test box is formed above the vibration plate and inside the protective shell.

[0007] A bottom shock-absorbing structure is closely connected to the lower part of the shell, and a cavity for placing the shock-absorbing structure is arranged inside the bottom shock-absorbing structure.

[0008] The shock absorbing structure is a plurality of shock absorbing springs arranged between the bottom shock absorbing structure and the lower partition plate.

[0009] The driving gear, the reduction gear and the speed change wheel are installed on the same horizontal plane.

[0010] The top end of the side wall of the shell is connected to a suitcase via a side shock-absorbing structure, and both side surfaces of the suitcase are openable and closable side surfaces.

[0011] Stabilizing blocks are respectively sleeved on the surface of the long rotating shaft and the surface of the short rotating shaft to reduce the vibration of the rotating shaft during transmission. The stabilizing blocks are shock-absorbing materials with annular structures, such as shock-absorbing sponges.

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

[0013] 1. The utility model occupies a small area and can be combined with a suitcase. It is highly portable and can achieve deceleration and speed change through the mutual engagement of multiple gears, generating multiple vibration intensities in the test box, which can improve the test performance of the device, avoid the problem of repeated operation of the device, and improve the test efficiency of the device.

[0014] 2. The long rotating shaft and the short rotating shaft are affected by different rotation speeds, respectively driving the eccentric blocks at their upper ends to generate vibrations of different intensities, realizing the adjustability of vibrations. At the same time, it can be installed in combination with a shock-absorbing structure at the bottom of the device to avoid the problem that the vibration of the device itself affects the test results during the vibration test, making the test results more accurate and with smaller errors.

[0015] 3. When the device is connected to the suitcase, shock absorption is carried out through the side shock-absorbing structure, which can effectively reduce the problem that the device is damaged by vibrations inside the suitcase, improve the service life of the device, and bring a more stable use experience to the user.

[0016] 4. The operation of this device is simple. Without repeatedly operating the device for adjustment, the earthquake resistance results of the same concrete sample block under different vibration intensities can be obtained, and the earthquake resistance results of different concrete sample blocks under the same vibration intensity can also be obtained, featuring portability and high efficiency. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the eccentric block and the long rotating shaft or the short rotating shaft of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the connection structure between the outer shell and the suitcase of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the closed state of the suitcase of the present utility model.

[0021] In the figure:

[0022] 1. Outer shell; 2. Bottom shock-absorbing structure; 3. Shock-absorbing spring; 4. Lower partition; 5. Rotating motor; 6. Middle partition; 7. Driving gear; 71. Upper gear; 72. Engaging gear; 8. Reduction gear; 9. Variable speed wheel; 10. Protective shell; 101. Vibration plate; 102. Shock-absorbing block; 103. Rotating groove; 104. Stabilizing block; 105. Eccentric block; 11. Long rotating shaft; 12. Eccentric shaft; 13. Test box; 14. Suitcase; 141. Handle; 142. Openable side surface; 143. Side shock-absorbing structure; 144. Side shock-absorbing spring; 15. Short rotating shaft. Detailed Embodiments

[0023] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] As shown in the Figures 1-4 accompanying drawings.

[0025] A civil engineering experimental device for water conservancy projects includes a housing 1 with a cavity inside. A bottom shock-absorbing structure 2 is provided at the bottom end of the housing 1. The bottom shock-absorbing structure 2 has a cavity inside, the bottom end of the bottom shock-absorbing structure 2 is closed, and the top end of the bottom shock-absorbing structure 2 is open and combined with the bottom end face of the housing 1. A number of shock-absorbing springs 3 are installed in the cavity of the bottom shock-absorbing structure 2. A lower partition 4 is provided at the junction of the bottom end of the housing 1 and the bottom shock-absorbing structure 2 and along the length side of the housing 1. The shock-absorbing springs 3 are vertically installed between the bottom end face of the lower partition 4 and the upper surface of the lower end of the bottom shock-absorbing structure 2. A middle partition 6 is provided above the bottom partition 4 and in the middle and lower part of the housing 1. The middle partition 6 is arranged parallel to the lower partition 4. A rotary motor 5 is installed between the lower partition 4 and the middle partition 6.

[0026] The shaft end of the rotary motor 5 passes through the middle partition 6 and contacts the driving gear 7 located above the middle partition 6. The center point of the driving gear 7 coincides with the midpoint of the middle partition 6. On both sides of the driving gear 7, reduction gears 8 are respectively meshed with variable speed wheels 9 through meshing. The variable speed wheel 9 is smaller than the driving gear 7, and the reduction gear 8 is smaller than the variable speed wheel 9. The reduction gear 8, the driving gear 7, and the variable speed wheel 9 are all on the same horizontal plane. When the rotary motor 5 is powered on and rotates, the driving gear 7 starts to rotate driven by the shaft. The reduction gears 8 located on both sides of the driving gear 7 are driven by the driving gear 7. The reduction gear 8 is small and the driving gear 7 is large. Therefore, when the driving gear 7 rotates one circle, it can drive the reduction gear 8 to rotate multiple circles. At the same time, the variable speed wheel 9 is smaller than the driving gear 7 and larger than the reduction gear 8. Therefore, the reduction gear 8 needs to rotate multiple circles to drive the variable speed wheel 9 to rotate one circle. After being driven by the reduction gear 8, the rotational speed of the driving gear 7 reaching the variable speed wheel 9 has been reduced, thus achieving speed reduction.

[0027] The driving gear 7 is fixed to the rotating shaft of the rotating motor 5. The front end of the rotating motor 5 passes through the central hole of the driving gear 7 and is drivingly connected to the upper gear 71 located above the driving gear 7. On both sides of the upper gear 71, engaging gears 72 are respectively engaged. The specification of the engaging gear 72 is smaller than that of the speed change gear 9 and larger than that of the reduction gear 8. When the rotating motor 5 drives the upper gear 71 to rotate, the engaging gear 72 is driven to rotate, so that two rotation speeds are formed between the speed change gear 9 and the engaging gear 72.

[0028] At the bottom end of the engaging gear 72, a fixed bent post in an "L" shape is connected by a rotating shaft. The other end of the fixed bent post is fixed on the inner surface of the side wall of the housing 1. At the upper end of each engaging gear 72, a short transmission shaft 15 is drivingly connected. At the upper end of each speed change gear, a long transmission shaft 11 is drivingly connected. The upper ends of each short transmission shaft 15 and the upper ends of each long transmission shaft 11 are respectively connected to the protective housing 10.

[0029] The lower end of the protective housing 10 is in an open shape. A cavity is arranged inside the protective housing 10. A rectangular groove is opened on the inner wall of the cavity. A vibration plate 101 is placed in the rectangular groove. The vibration plate 101 can shake up and down in the rectangular groove. An experimental box 13 for placing concrete samples is formed above the vibration plate 101. An eccentric block 105 is arranged below the vibration plate 101 and above the short transmission shaft 15 or the long transmission shaft 11.

[0030] Embodiment 1

[0031] The user connects the device to an external control power supply and places the concrete sample in the experimental box 13. After the device is connected to the control power supply, the rotating motor 5 starts to control the rotation of the rotating shaft. At the same time, the rotating shaft drives the driving gear 7 and the upper gear 71 to start rotating. The driving gear 7 drives the speed change gear 9 to rotate respectively through the reduction gears 8 on both sides. The upper gear 71 meshes with the engaging gears 72 on both sides to start rotating. The rotation speeds of the long rotating shafts 11 driven by the two speed change gears 9 are the same; the rotation speeds of the short rotating shafts 15 driven by the two engaging gears 72 are the same. Therefore, two rotation speeds appear in the device, and the two rotation speeds drive the eccentric block 105 to generate two different vibration forces.

[0032] Eccentric blocks 105 are respectively connected to the upper ends of the long transmission shaft 11 and the short transmission shaft 15. The eccentric blocks 105 generate vibrations when rotating, driving the vibration plate 101 to generate vibrations.

[0033] The user places different concrete samples in the experimental box 13 with two same rotation speeds. The vibration force generated by the eccentric block 105 drives the vibration plate 101 to shake up and down in the rectangular groove, generating a force on the concrete sample, so that the seismic performance of different concrete samples under the same vibration force can be obtained; or the seismic performance of the same concrete sample under different vibration forces can be obtained.

[0034] Embodiment 2

[0035] On the basis of the first embodiment, in order to improve the portability of the device, a suitcase 14 is provided outside the outer shell 1. The upper end of the suitcase 14 has a handle 141, and the two sides of the suitcase 14 are openable side surfaces 142. At the same time, in order to improve the shock absorption performance of the device in the suitcase 14, side shock absorption structures 143 are respectively provided on the top side walls of the outer shell 1, and side shock absorption springs 144 are arranged inside the side shock absorption structures 143. The side shock absorption springs 144 are used to connect the outer shell 1 and the inner side wall of the suitcase 14. In this way, while improving the portability of the device, the stability of the device in the suitcase 14 can be improved, and the problem of damage to the device due to instability can be avoided.

[0036] Embodiment 3

[0037] The difference between this embodiment and the first embodiment is that a stabilizing block 104 is sleeved at the middle position of the long transmission shaft 11 or the middle position of the short transmission shaft 15. The stabilizing block 104 is a ring-shaped shock-absorbing material. At the same time, in order to improve the stability of the lower part of the device, a shock-absorbing block 102 is provided below the protective shell 10. The inner surface of the shock-absorbing block 102 fits the outer wall of the long rotating shaft 11 or the short rotating shaft 15. At the same time, a groove for the stabilizing block 104 is provided at the position where the shock-absorbing block 102 contacts the stabilizing block 104. In this way, when the long transmission shaft 11 or the short transmission shaft 15 rotates, the rotating shaft part below the eccentric block 105 is subjected to the shock-absorbing effect of the shock-absorbing block 102 or the stabilizing block 104, which has the effect of stabilizing the device, making the seismic test results of the device more accurate, and avoiding the problem that the external vibration of the device affects the seismic results. The rest is the same as the first embodiment.

[0038] Using the technical solution of the present utility model, or those skilled in the art inspired by the technical solution of the present utility model to design a similar technical solution and achieving the above technical effects shall fall within the protection scope of the present utility model.

Claims

1. A civil engineering experimental device for water conservancy projects, having a housing (1), a cavity is arranged inside the housing (1), and two partition plates are arranged at intervals along the length direction of the housing (1) inside the cavity. Among them, The partition located below is the lower partition (4), and the other partition is the middle partition (6). A rotary motor (5) is arranged between the lower partition (4) and the middle partition (6). It is characterized in that the shaft end of the rotary motor (5) passes through the middle partition (6) and is sequentially connected in transmission with two gears from bottom to top. Among them, the gear located above is the upper gear (71), and the other gear is the driving gear (7); both sides of the driving gear (7) are respectively meshed with a reduction gear (8) with a specification smaller than that of the driving gear (7) to drive a variable speed wheel (9). The specification of the variable speed wheel (9) is larger than that of the reduction gear (8). Above each variable speed wheel (9), a long transmission shaft (11) is installed in transmission; both sides of the upper gear (71) are respectively meshed with two engaging gears (72) fixed on the inner wall of the housing (1). Above each engaging gear (72), a short transmission shaft (15) is installed in transmission; eccentric blocks (105) are respectively arranged above the long transmission shaft (11) and the short transmission shaft (15). When the eccentric blocks (105) rotate, vibration is generated; a protective housing (10) is arranged at the upper end of the housing (1). The upper end of the eccentric block (105) contacts a vibration plate (101) that can be installed in the protective housing (10) in a swaying manner. Above the vibration plate (101) and inside the protective housing (10), a test chamber (13) is formed.

2. The civil engineering experimental device for water conservancy projects according to claim 1, characterized in that: A bottom shock-absorbing structure (2) is adhesively connected to the lower part of the housing (1). A cavity for placing the shock-absorbing structure is arranged inside the bottom shock-absorbing structure (2).

3. The civil engineering experimental device for water conservancy projects according to claim 2, characterized in that: The shock-absorbing structure is a plurality of shock-absorbing springs (3) arranged between the bottom shock-absorbing structure (2) and the lower partition (4).

4. A civil engineering experimental device for water conservancy projects according to claim 1, characterized in that: The driving gear (7), the reduction gear (8), and the variable speed wheel (9) are installed on the same horizontal plane.

5. The civil engineering experimental device for water conservancy projects according to claim 1, characterized in that: The top end of the side wall of the housing (1) is connected to a suitcase (14) through a side shock-absorbing structure (143).

6. The civil engineering experimental device for water conservancy projects according to claim 5, wherein: The two side surfaces of the suitcase (14) are openable side surfaces (142).

7. The civil engineering experimental device for water conservancy projects according to claim 1, wherein: Stabilizing blocks (104) are respectively sleeved on the surfaces of the long transmission shaft (11) and the short transmission shaft (15).

8. The civil engineering experimental device for water conservancy projects according to claim 7, characterized in that: The stabilizing block (104) is a shock-absorbing material in a ring structure.

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