Culvert pressure testing equipment
By designing a sliding structure for the base and support components, combined with jacks and pressure gauges, accurate detection of culvert pressure was achieved, solving the problems of low detection efficiency and poor accuracy in existing technologies, and ensuring the safety and reliability of the culvert.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC TIANJIN HARBOR ENG DESIGN INST CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-30
AI Technical Summary
Existing culvert pressure testing technologies suffer from low efficiency and poor accuracy, making them unsuitable for complex working conditions.
A culvert pressure testing device was designed. The culvert is stably supported by a base and support components. The spacing between the support plates is adjusted by sliding rods and sleeve rods. Combined with jacks and pressure gauges, the device can accurately detect the pressure of the culvert and avoid stress concentration.
This improves the accuracy and safety of culvert pressure testing, provides a reliable basis for quality assessment, and ensures the stability and reliability of culverts during use.
Smart Images
Figure CN224435971U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of construction testing technology, and in particular relates to a culvert pressure testing device. Background Technology
[0002] Culverts are the most commonly used culvert structure type for highway subgrade drainage. They not only have good mechanical properties, but also are simple in construction, convenient to build, have a short construction period, and low cost. The most common type of culvert is the reinforced concrete culvert.
[0003] Culverts are crucial underground structures in highway and municipal engineering projects, and their load-bearing capacity and safety performance directly affect the overall stability of the project. However, existing culvert pressure testing technologies have many shortcomings, resulting in low testing efficiency, poor accuracy, and difficulty in meeting the demands of complex working conditions. Therefore, there is an urgent need to provide a culvert pressure testing device. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a culvert pressure testing device. The base and support components stably support the culvert. Because the sliding rod slides on the sleeve rod, the spacing between the support plates can be adjusted according to different culvert outer diameters, facilitating the placement of the culvert on the support plates. This avoids stress concentration that could lead to culvert damage and inaccurate testing results. During testing, a jack pushes the culvert towards the base, and a pressure gauge measures the pressure output by the jack, thus achieving accurate pressure testing of the culvert. This provides a reliable basis for culvert quality assessment and safety inspection, effectively ensuring the safety and reliability of the culvert during use, and solving the technical problem of poor accuracy in culvert pressure testing in existing technologies.
[0005] This utility model provides a culvert pressure testing device, comprising:
[0006] Base;
[0007] A support assembly is symmetrically arranged on the base. The support assembly includes a sleeve rod, a sliding rod, a support plate, and a pushing member. One end of the sleeve rod is fixed to the base, the sliding rod is slidably connected inside the sleeve rod, and the sliding rod is fixedly connected to the support plate.
[0008] The sleeve rod and the slide rod are inclined from bottom to top towards another support assembly; the pusher is used to push the pallet to move along the sliding direction of the slide rod; the two pallets are used to place the culvert;
[0009] A jack is mounted on the base and is used to push the culvert toward the base. A pressure gauge is mounted on the jack and is used to detect the pressure output by the jack.
[0010] In this technical solution, the base and support components stably support the culvert. Because the sliding rod slides on the sleeve rod, the spacing between the support plates can be adjusted according to different culvert outer diameters, facilitating the installation of the culvert on the support plates. This avoids stress concentration that could lead to culvert damage and inaccurate testing results. During the testing process, jacks are used to move the culvert towards the base, and pressure gauges are used to detect the pressure output by the jacks, thus achieving accurate pressure detection of the culvert. This provides a reliable basis for culvert quality assessment and safety testing, effectively ensuring the safety and reliability of the culvert during use.
[0011] In some embodiments, a gantry frame is provided on the base; the top of the jack is located on the inner top wall of the gantry frame;
[0012] The bottom of the jack is provided with a long strip support rod, the length direction of which is the same as that of the culvert, and the bottom of the support rod is used to abut against the culvert.
[0013] In this technical solution, the jacks can apply pressure to the support rods more stably, and the support rods then distribute the force evenly across the culvert, ensuring uniform pressure transmission and preventing stress concentration that could lead to localized breakage of the culvert. This improves the stability and reliability of the entire testing equipment, further guaranteeing the accuracy of culvert pressure testing.
[0014] In some embodiments, the bottom of the support rod is provided with a first flexible element for contacting the culvert.
[0015] In the technical solution, the first flexible component can play a buffering and protective role, avoiding direct rigid contact between the support rod and the culvert, which would damage the surface of the culvert. At the same time, it can also ensure good contact between the support rod and the culvert, so that the pressure can be transmitted to the culvert more evenly, improving the accuracy of the test results and extending the service life of the culvert.
[0016] In some embodiments, the sliding direction of the slide rod within the sleeve is at a minimum angle of 45° to the base.
[0017] In this technical solution, this specific tilt angle setting allows the pallets to accommodate culverts of different diameters during movement, ensuring that the center of the culvert is located between the two pallets. When pressure is applied to the culvert, it can better balance the forces in all directions, making the pressure on the culvert more uniform, reducing the risk of culvert damage that may be caused by uneven stress, improving the safety and reliability of the testing process, and ensuring the accuracy of the test results.
[0018] In some embodiments, a pin is detachably connected to the sleeve rod, and a plurality of pin holes are provided on the slide rod along its length. The pin is used to be inserted into the corresponding pin hole to fix the relative position of the sleeve rod and the slide rod.
[0019] In the technical solution, after the pallet is adjusted to the designated position according to the corresponding culvert, the position of the pallet is fixed by inserting a pin into the corresponding pin hole, which ensures the support of the bottom of the culvert and prevents the position of the culvert from changing when the jack applies pressure to the culvert, thereby ensuring the accuracy of culvert inspection.
[0020] In some embodiments, the pallet is arc-shaped with its center facing away from the sleeve rod, and the axis of the pallet is parallel to the axis of the culvert.
[0021] In the technical solution, the arc-shaped support plate can better fit the outer surface of the culvert, increasing the contact area between the support plate and the culvert. This makes the culvert more stable when placed on the support plate, and the force is more even. It reduces the shaking or damage to the culvert caused by uneven force during the inspection process, and improves the stability and accuracy of the inspection.
[0022] In some embodiments, a second flexible element is fitted to the inner wall of the pallet, the second flexible element being used to contact the culvert.
[0023] In the technical solution, the second flexible component further enhances the buffering and protection effect between the pallet and the culvert, avoiding potential damage caused by direct contact between the pallet and the culvert. At the same time, it can also ensure that the culvert is placed more stably on the pallet, further improving the stability of the culvert during the testing process, making the pressure test more accurate and reliable, and effectively protecting the surface quality of the culvert.
[0024] In some embodiments, the pusher is a hydraulic cylinder, which includes a cylinder body and an output shaft. The cylinder body is fixed to the base, and the output shaft is connected to the support plate.
[0025] In the technical solution, the hydraulic cylinder, as the driving component, has a large thrust and stable power output, which can accurately control the moving speed and position of the pallet, thereby fixing the position of the culvert and ensuring that the bottom of the culvert is stably supported when the jack applies pressure to the culvert, thus preventing the culvert from moving during the inspection and ensuring the accuracy of the inspection.
[0026] In some embodiments, there are multiple sleeve rods and sliding rods arranged in a one-to-one correspondence, and the sleeve rods are spaced apart along the length direction of the support plate.
[0027] In the technical solution, the structure of multiple rods and sliding rods can better support the support plate and ensure its stability, thereby achieving more stable support for the culvert.
[0028] In some embodiments, multiple pushers are spaced apart along the length of the tray.
[0029] In the technical solution, multiple pushers can more stably push the position of the pallet, and multiple pushers can ensure support for the bottom of the culvert, preventing the culvert from moving during the inspection, thereby ensuring the accuracy of the inspection.
[0030] Based on the above technical solution, in this embodiment of the utility model, the base and support assembly can stably support the culvert. Because the sliding rod slides on the sleeve rod, the spacing between the support plates can be adjusted according to different culvert outer diameters, thus facilitating the installation of the culvert on the support plates. This avoids stress concentration that could lead to culvert damage and inaccurate testing results. During the testing process, the culvert is moved towards the base by a jack, and the pressure output by the jack is measured using a pressure gauge, thereby achieving accurate pressure detection of the culvert. This provides a reliable basis for culvert quality assessment and safety testing, effectively ensuring the safety and reliability of the culvert during use. Attached Figure Description
[0031] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0032] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the culvert pressure testing equipment of this utility model;
[0033] Figure 2 This is a front view of one embodiment of the culvert pressure testing equipment of this utility model;
[0034] Figure 3 This is a side view of one embodiment of the culvert pressure testing equipment of this utility model.
[0035] In the picture:
[0036] 100, base; 200, gantry frame; 300, jack; 400, pressure gauge; 500, support rod; 600, first flexible component; 700, sleeve rod; 800, slide rod; 900, pin; 110, pallet; 120, second flexible component; 130, pusher component. Detailed Implementation
[0037] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0038] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.
[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0041] Please refer to all the accompanying drawings. In one illustrative embodiment of the culvert pressure testing equipment of this utility model, the culvert pressure testing equipment includes a base 100, which provides support for the structure.
[0042] In some embodiments, the culvert pressure testing equipment further includes a support assembly symmetrically arranged on the base 100. The support assembly includes a sleeve rod 700, a slide rod 800, a support plate 110, and a pusher 130. One end of the sleeve rod 700 is fixed to the base 100, the slide rod 800 is slidably connected inside the sleeve rod 700, and the slide rod 800 is fixedly connected to the support plate 110.
[0043] The length direction of the sleeve rod 700 and the slide rod 800 is inclined from bottom to top towards another support component; the pusher 130 is used to push the pallet 110 to move along the sliding direction of the slide rod 800; the two pallets 110 are used to place the culvert.
[0044] In some embodiments, the culvert pressure testing equipment further includes a jack 300, which is disposed on the base 100 and is used to push the culvert to move toward the base 100. A pressure gauge 400 is disposed on the jack 300 and is used to detect the pressure output by the jack 300.
[0045] Through the above scheme, the base 100 and the support assembly can stably support the culvert. Because the slide bar 800 slides on the sleeve bar 700, the spacing between the support plates 110 can be adjusted according to different culvert outer diameters, thus facilitating the culvert's position on the support plates 110. This avoids stress concentration that could lead to culvert damage and inaccurate testing results. During the testing process, the culvert is moved towards the base 100 by the jack 300, and the pressure output by the jack 300 is measured by the pressure gauge 400, thereby achieving accurate pressure detection of the culvert. This provides a reliable basis for culvert quality assessment and safety testing, effectively ensuring the safety and reliability of the culvert during use.
[0046] In this application, the test load is applied by a jack 300 with a built-in pressure gauge, and the pressure is controlled by the oil gauge reading. Before use, the jack 300 is calibrated by a force gauge in the laboratory to generate a regression equation, thereby obtaining the pressure gauge reading 400 corresponding to the load applied to the circular culvert, thus realizing the calculation of the culvert pressure value.
[0047] In some embodiments, the base 100 is disposed on the ground. The upper surface of the base 100 is horizontal to ensure that the height of the two support plates 110 in the two support components above is balanced, thereby ensuring that the two support plates 110 provide stable support for the culvert after installation and that the pressure applied by the support plates 110 to the culvert is even, avoiding stress concentration that could damage the culvert.
[0048] Furthermore, a screw can be installed at the bottom of the base 100, threadedly connected to the bottom corner of the base 100. The axis of the screw is vertically oriented. When the ground is uneven, the screw can be rotated to allow its bottom to support the ground, thereby adjusting the posture of the base 100 and ensuring that its upper surface is horizontal. This design enhances the adaptability and stability of the testing equipment, ensuring stable operation in any complex terrain. This improves the accuracy and reliability of culvert pressure testing, avoids testing deviations caused by the tilt of the base 100, guarantees the authenticity and validity of the test results, and provides a more reliable basis for culvert quality assessment and safety inspection.
[0049] Understandably, in order to ensure stable support for the base 100 and the structure and culvert above it, the diameter of the screw can be adjusted as needed to ensure its supporting force.
[0050] In some embodiments, a gantry frame 200 is provided on the base 100; the top of the jack 300 is located on the inner top wall of the gantry frame 200; a long strip support rod 500 is provided at the bottom of the jack 300, the length direction of the support rod 500 being the same as the length direction of the culvert, and the bottom of the support rod 500 is used to abut against the culvert. The jack 300 can apply pressure to the support rod 500 more stably, and the support rod 500 then evenly distributes the force to the culvert, ensuring uniform pressure transmission and avoiding stress concentration that could lead to localized breakage of the culvert. This improves the stability and reliability of the entire testing equipment and further ensures the accuracy of culvert pressure testing.
[0051] Furthermore, the gantry 200 is located in the middle of the culvert to ensure that the jack 300 can be installed in the middle of the culvert.
[0052] Furthermore, the support rod 500 can be made of I-beams, with the length of the I-beams matching the length of the culvert. The structural characteristics of I-beams give them high bending strength and load-bearing capacity, enabling them to evenly distribute the pressure applied by the jack 300, ensuring uniform stress distribution on the culvert and preventing damage caused by localized stress concentration. Simultaneously, the consistent length of the I-beams with the culvert ensures that pressure is transmitted evenly along the entire length of the culvert, improving the comprehensiveness and accuracy of the inspection.
[0053] In another embodiment, the support rod 500 can be made of sleepers. Sleepers have good elasticity and a certain degree of cushioning performance, which can play a role in shock absorption and buffering during culvert pressure testing, effectively reducing the damage to the culvert caused by the impact force generated by the pressure applied by the jack 300, and protecting the culvert surface from damage. At the same time, the shape and size of the sleepers are easy to process and adjust, and can be flexibly configured according to the diameter and shape of the culvert to ensure a tight fit with the culvert, so that the pressure can be evenly transmitted to the culvert, improving the accuracy and reliability of the test. In addition, the material cost of sleepers is relatively low, and they are easy to obtain and replace, reducing the operating cost of the testing equipment and having high economic efficiency and practicality.
[0054] In some embodiments, a first flexible element 600 is provided at the bottom of the support rod 500, which is used to contact the culvert. The first flexible element 600 can play a buffering and protective role, avoiding direct rigid contact between the support rod 500 and the culvert and causing damage to the surface of the culvert. At the same time, it can also ensure good contact between the support rod 500 and the culvert, so that the pressure can be transmitted to the culvert more evenly, improving the accuracy of the test results and extending the service life of the culvert.
[0055] Furthermore, the first flexible component 600 can be a rubber pad, which is attached to and fixed to the inner bottom wall of the support rod 500. The high elasticity and flexibility of the rubber pad can effectively buffer the rigid contact between the support rod 500 and the culvert, avoiding damage to the culvert surface caused by direct contact and protecting the integrity of the culvert. At the same time, the high coefficient of friction of the rubber pad can enhance the stability between the support rod 500 and the culvert, preventing the culvert from sliding or shifting during the inspection process and ensuring the accuracy of the inspection. In addition, the wear resistance and corrosion resistance of the rubber pad enable it to be used for a long time in harsh environments, reducing the frequency of maintenance and replacement, lowering inspection costs, and improving the practicality and economy of the inspection equipment.
[0056] In another embodiment, the first flexible element 600 can be a sponge pad. The sponge pad is softer, further improving the surface protection of the culvert.
[0057] Furthermore, the first flexible component 600 can also be made of materials such as foam pads or felt, depending on the site conditions. Foam pads have excellent cushioning properties, effectively absorbing and dispersing pressure to prevent damage to the culvert due to uneven stress during testing. Their lightweight nature also facilitates operation and installation. Felt, on the other hand, has good flexibility and abrasion resistance, allowing it to closely conform to the culvert surface, providing stable support, reducing culvert sway, and ensuring a smooth testing process. These material choices not only protect the culvert surface from damage but can also be optimized according to different site conditions and culvert characteristics, improving the accuracy and reliability of testing, reducing testing costs, and enhancing the versatility and economy of the testing equipment.
[0058] In some embodiments, the sliding direction of the slide bar 800 within the sleeve 700 forms a minimum angle of 45° with the base 100. This specific tilt angle setting allows the support plate 110 to accommodate culverts of different diameters during movement, ensuring that the center of the culvert is located between the two support plates 110. When pressure is applied to the culvert, it can better balance the forces in various directions, making the pressure on the culvert more uniform, reducing the risk of culvert damage that may be caused by uneven force, improving the safety and reliability of the inspection process, and ensuring the accuracy of the inspection results.
[0059] Furthermore, the extension and retraction directions of the slide rods 800 in the two support components are opposite. The two support plates 110 move obliquely upward at a 45° angle to achieve simultaneous vertical movement and proximity. This structure allows for the adjustment of the position of the support plates 110 according to different diameter culverts, ensuring that the culvert is stably placed on the support plates 110 and subjected to uniform force. It also ensures that the center position of the culvert remains between the two support plates 110, avoiding uneven force distribution due to positional misalignment. This design significantly enhances the adaptability and stability of the inspection equipment, improves the accuracy and reliability of inspection, simplifies the operation process, reduces operational difficulty, and increases inspection efficiency.
[0060] In some embodiments, a pin 900 is detachably connected to the sleeve 700, and a plurality of pin holes are provided on the slide rod 800 along its length. The pin 900 is used to insert into the corresponding pin hole to fix the relative position of the sleeve 700 and the slide rod 800. When the support plate 110 is adjusted to the designated position according to the corresponding culvert, the position of the support plate 110 is fixed by inserting the pin 900 into the corresponding pin hole, ensuring the support of the bottom of the culvert and preventing the position of the culvert from changing when the jack 300 applies pressure to the culvert, thereby ensuring the accuracy of culvert inspection.
[0061] Furthermore, on a single slide bar 800, the spacing between any two adjacent pin holes is the same. This design ensures that the support plate 110 can be adjusted in uniform steps during the adjustment process. This allows the operator to precisely control the position of the support plate 110 according to the specific size and requirements of the culvert, thereby achieving stable support for culverts of different diameters. The uniform pin hole spacing improves the flexibility and accuracy of adjustment, avoiding the problems of difficulty or inaccuracy in adjusting the position of the support plate 110 caused by inconsistent pin hole spacing.
[0062] In some embodiments, the support plate 110 is arc-shaped, with its center facing away from the sleeve rod 700, and the axis of the support plate 110 is parallel to the axis of the culvert. The arc-shaped support plate 110 can better fit the outer surface of the culvert, increasing the contact area between the support plate 110 and the culvert, making the culvert more stable and the force more uniform when placed on the support plate 110. This reduces the shaking or damage to the culvert caused by uneven force during the inspection process, and improves the stability and accuracy of the inspection.
[0063] That is, the tray 110 is an arc-shaped plate, and the trays 110 in the two support components have the same shape.
[0064] In some embodiments, a second flexible element 120 is fitted to the inner wall of the pallet 110, and the second flexible element 120 is used to contact the culvert. The second flexible element 120 further enhances the buffering and protection effect between the pallet 110 and the culvert, avoiding damage that may be caused by direct contact between the pallet 110 and the culvert. At the same time, it can also ensure that the culvert is placed more stably on the pallet 110, further improving the stability of the culvert during the testing process, making the pressure test more accurate and reliable, and effectively protecting the surface quality of the culvert.
[0065] In addition, the second flexible element 120 deforms after contacting the culvert, thereby ensuring that the pallet 110 is attached and supported by the second flexible element 120.
[0066] Furthermore, the second flexible component 120 can be a rubber pad, sponge pad, foam pad, or felt, etc.
[0067] In some embodiments, the pusher 130 is a hydraulic cylinder, which includes a cylinder body and an output shaft. The cylinder body is fixed to the base 100, and the output shaft is connected to the support plate 110. The hydraulic cylinder, as the pusher 130, has a large thrust and stable power output, enabling precise control of the moving speed and position of the support plate 110. This achieves fixed positioning of the culvert, ensuring that the bottom of the culvert is stably supported when the jack 300 applies pressure, preventing movement of the culvert during inspection, thereby ensuring the accuracy of the inspection.
[0068] Furthermore, the output shaft passes through and is slidably connected to one end of the cylinder body. The end of the cylinder body away from the output shaft is connected to the base 100, and the end of the output shaft away from the cylinder body is connected to the support plate 110.
[0069] In another embodiment, the end of the cylinder block away from the output shaft is connected to the support plate 110, and the end of the output shaft away from the cylinder block is connected to the base 100.
[0070] Furthermore, the output direction of the hydraulic cylinder is parallel to the slide bar 800.
[0071] In another embodiment, the pusher 130 can also be a cylinder. The pusher 130 can also be a linear motor.
[0072] In some embodiments, there are multiple sleeve rods 700 and sliding rods 800 arranged in a one-to-one correspondence, with the sleeve rods 700 spaced apart along the length of the support plate 110. The structure of multiple sleeve rods 700 and sliding rods 800 can better support the support plate 110 and ensure the stability of the support plate 110, thereby achieving more stable support for the culvert.
[0073] In some embodiments, multiple pushers 130 are spaced apart along the length of the support plate 110. The multiple pushers 130 can more stably push the position of the support plate 110, and the multiple pushers 130 can ensure support for the bottom of the culvert, preventing the culvert from moving during the inspection, thereby ensuring the accuracy of the inspection.
[0074] Through the description of several embodiments of the culvert pressure testing equipment of this utility model, it can be seen that the embodiments of the culvert pressure testing equipment of this utility model have at least one or more of the following advantages:
[0075] 1. The base 100 and support assembly can stably support the culvert. Because the slide bar 800 slides on the sleeve bar 700, the spacing between the support plates 110 can be adjusted according to different culvert outer diameters, thus facilitating the positioning of the culvert on the support plates 110. This avoids stress concentration that could lead to culvert damage and inaccurate testing results.
[0076] 2. During the testing process, the test load is applied using a jack 300 equipped with a pressure gauge, and the pressure is controlled by the oil gauge reading. Before use, the jack 300 is calibrated in the laboratory using a force gauge to generate a regression equation, which yields the pressure gauge reading corresponding to the load applied to the circular culvert. This allows for the calculation of the culvert's pressure value. This provides a reliable basis for the culvert's quality assessment and safety inspection, effectively ensuring the safety and reliability of the culvert during use.
[0077] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0078] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A culvert pressure testing device, characterized in that, include: Base; A support assembly is symmetrically arranged on the base. The support assembly includes a sleeve rod, a sliding rod, a support plate, and a pushing member. One end of the sleeve rod is fixed to the base, the sliding rod is slidably connected inside the sleeve rod, and the sliding rod is fixedly connected to the support plate. The sleeve rod and the slide rod are inclined from bottom to top towards another support assembly; the pusher is used to push the pallet to move along the sliding direction of the slide rod; the two pallets are used to place the culvert; A jack is mounted on the base and is used to push the culvert toward the base. A pressure gauge is mounted on the jack and is used to detect the pressure output by the jack.
2. The culvert pressure testing equipment according to claim 1, characterized in that, A gantry frame is provided on the base; the top of the jack is located on the inner top wall of the gantry frame; The bottom of the jack is provided with a long strip support rod, the length direction of which is the same as that of the culvert, and the bottom of the support rod is used to abut against the culvert.
3. The culvert pressure testing equipment according to claim 2, characterized in that, The bottom of the support rod is provided with a first flexible element, which is used to contact the culvert.
4. The culvert pressure testing equipment according to claim 1, characterized in that, The sliding direction of the slide rod within the sleeve forms a minimum angle of 45° with the base.
5. The culvert pressure testing equipment according to claim 4, characterized in that, The sleeve is detachably connected to a pin, and the slide rod has multiple pin holes along its length. The pin is used to be inserted into the corresponding pin hole to fix the relative position of the sleeve and the slide rod.
6. The culvert pressure testing equipment according to claim 1, characterized in that, The pallet is arc-shaped, with its center facing away from the sleeve rod, and the axis of the pallet is parallel to the axis of the culvert.
7. The culvert pressure testing equipment according to claim 6, characterized in that, The inner wall of the pallet is fitted with a second flexible element, which is used to contact the culvert.
8. The culvert pressure testing equipment according to claim 7, characterized in that, The pushing component is a hydraulic cylinder, which includes a cylinder body and an output shaft. The cylinder body is fixed to the base, and the output shaft is connected to the support plate.
9. The culvert pressure testing equipment according to claim 1, characterized in that, There are multiple sleeve rods and sliding rods, and they are arranged in a one-to-one correspondence. The sleeve rods are spaced apart along the length direction of the support plate.
10. The culvert pressure testing equipment according to claim 1, characterized in that, The pusher is provided in multiple portions at intervals along the length of the tray.