Pressure test device for detecting bearing capacity of well lid

Abstract

The invention relates to the field of well lid detection, and particularly discloses a pressure test device for detecting the bearing capacity of a well lid, which comprises a test rack, a clamping assembly for clamping the well lid is arranged on the test rack, a pressure assembly is arranged on the test rack, and a rotating column is rotationally connected to the pressure assembly. A rotating mechanism used for driving the rotating column to rotate is arranged on the pressure assembly, and a supporting assembly is arranged on the rotating column. Various simulation test environments can be provided, so that the detection function of integrating center detection, periphery detection and spinning detection effects of the manhole cover is realized, detection of each part of the manhole cover is facilitated, the comprehensive detection effect of the manhole cover is improved, the evaluation accuracy of the bearing capacity of the manhole cover is improved, and the detection efficiency is improved. Workers can comprehensively understand the well lid, the follow-up research quality of the well lid is improved, the safety of the well lid is improved, the service life of the well lid is prolonged, and the economic cost of related departments is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole cover detection, and particularly to a pressure test device for detecting the bearing capacity of a manhole cover. Background Art

[0002] The manhole cover is a very important part of urban infrastructure. It is usually used to cover the openings of underground pipelines, sewer inlets or other underground facilities to ensure the safety of pedestrians and vehicles and prevent foreign objects such as garbage from entering the underground facilities. Generally, manhole covers are classified, such as those for pedestrians only, those for vehicles, etc. To ensure the safe use of manhole covers under complex actual application conditions, after the production of manhole covers, it is necessary to detect the bearing capacity of the manhole covers. If the bearing capacity of the manhole cover is insufficient, when it is subjected to the heavy pressure of an object during use, it is prone to phenomena such as depression damage or even being crushed.

[0003] In the existing patent CN217331896U, a pressure test device for detecting the bearing capacity of a manhole cover is disclosed. It includes a workbench, a pressing mechanism and a positioning mechanism for positioning the manhole cover. A central hole is provided on the workbench, the pressing mechanism is connected to the workbench, the positioning mechanism includes a plurality of positioning blocks, and the plurality of positioning blocks are all connected to the workbench and are arranged at intervals along the circumference of the central hole. This application has the effect of improving the accuracy of aligning the manhole cover with the pressing mechanism, thereby improving the accuracy of the manhole cover detection result.

[0004] In the above structure, the detection effect of the bearing capacity of the manhole cover can be achieved. However, during the test of the manhole cover, it is impossible to simulate various test environments to simulate the detection of the manhole cover, that is, it is difficult to detect each position of the manhole cover, reducing the detection effect of the manhole cover, making the bearing capacity evaluation inaccurate, reducing the accuracy of manhole cover detection, being unfavorable for the staff to comprehensively understand the manhole cover, reducing the safety of the manhole cover, affecting the research quality of subsequent manhole covers, reducing the service life of the manhole cover, and increasing the economic cost of relevant departments.

[0005] Therefore, how to provide a pressure test device for detecting the bearing capacity of a manhole cover is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] An object of the present invention is to provide a pressure test device for detecting the bearing capacity of a manhole cover. The pressure test device for detecting the bearing capacity of a manhole cover according to the present invention includes a test stand. A clamping assembly for clamping the manhole cover is provided on the test stand. A pressure assembly is provided on the test stand. A rotating column is rotatably connected to the pressure assembly. A rotating mechanism for driving the rotating column to rotate is provided on the pressure assembly. A support assembly is provided on the rotating column. A rotating reciprocating assembly is provided between the support assembly and the rotating column. A rotating mechanism for driving the rotating reciprocating assembly to move is provided on the rotating column. A rotating pressing assembly for detecting the central part of the manhole cover is provided on the rotating reciprocating assembly. An adjusting assembly is provided between the rotating reciprocating assembly and the rotating pressing assembly. An annular pressing assembly for detecting the peripheral part of the manhole cover is provided on the adjusting assembly. Among them, when detecting the central part of the manhole cover, the rotating mechanism is forced to drive the rotating reciprocating assembly and the rotating pressing assembly to rotate to the first state. Under the pressing action of the pressure assembly, the rotating pressing assembly contacts the central part of the manhole cover, and the annular pressing assembly is separated from the peripheral part of the manhole cover, forming a test detection for pressing the center of the manhole cover. When detecting the peripheral part of the manhole cover, the rotating mechanism is forced to drive the rotating reciprocating assembly and the rotating pressing assembly to rotate to the second state. Under the pressing action of the pressure assembly, the rotating pressing assembly is separated from the central part of the manhole cover, and the annular pressing assembly contacts the peripheral part of the manhole cover, forming a test detection for pressing the periphery of the manhole cover.

[0007] Preferably, the clamping assembly includes a hydraulic push rod installed on the test stand. A plurality of V-shaped clamping blocks are provided at the output end of the hydraulic push rod. The clamping blocks approach each other to achieve the clamping effect on the manhole cover.

[0008] Preferably, the pressure assembly includes a hydraulic lifting rod installed on the test stand. A monitor for detecting the magnitude of force is provided at the output end of the hydraulic lifting rod. The monitor is electrically connected to a force sensor and a monitoring system. A connecting block is provided at the output end of the hydraulic lifting rod. The rotating column is connected to the connecting block by a bearing.

[0009] Preferably, the rotating mechanism includes a rotating motor installed on the connecting block. The output shaft of the rotating motor is connected to a driving gear. An annular rotating gear engaged with the driving gear is fixedly sleeved on the outer circle of the rotating column.

[0010] Preferably, the rotating reciprocating assembly includes a reciprocating threaded rod connected to the rotating column by a bearing. A reciprocating threaded sleeve is threadedly connected to the reciprocating threaded rod. The reciprocating threaded rod threadedly penetrates through the reciprocating threaded sleeve. When the reciprocating threaded rod rotates unidirectionally, the reciprocating threaded sleeve moves up and down reciprocally.

[0011] Preferably, the support assembly includes support ears provided on the rotating column, a support outer rod provided on the support ears, a connecting ear provided on the reciprocating thread sleeve, a support inner rod penetrating through the support outer rod provided on the connecting ear, and a support spring sleeved on the outer circle of the support inner rod and provided between the connecting ear and the support outer rod.

[0012] Preferably, the rotating mechanism includes a rotating motor installed on the rotating column, a first rotating gear connected to the output shaft of the rotating motor, and a second rotating gear fixedly sleeved on the outer circle of the reciprocating threaded rod and meshing with the first rotating gear.

[0013] Preferably, the rotating and pressing-down assembly includes a limiting rod provided on the reciprocating threaded rod, a one-way threaded rod provided on the limiting rod, a pressing-down thread sleeve threadedly connected to the one-way threaded rod. When the pressing-down thread sleeve presses down, the pressing-down thread sleeve provides a pressing-down force on the central part of the manhole cover, and the one-way threaded rod threadedly penetrates through the pressing-down thread sleeve.

[0014] Preferably, the adjusting assembly includes a plurality of adjusting rods hinged on the reciprocating thread sleeve, an inclined fixing block provided on the pressing-down thread sleeve, and a connecting rod hinged on the inclined fixing block and also hinged on the adjusting rod.

[0015] Preferably, the annular pressing-down assembly includes a support column bearing-connected to the end of the adjusting rod, a support block provided on the support column, and a pressing-down roller bearing-connected to the support block. When the pressing-down roller presses down, the pressing-down roller provides a pressing-down force on the peripheral part of the manhole cover.

[0016] The beneficial effects of the present invention are as follows: When testing the manhole cover of the present invention, the manhole cover to be detected is placed on the test stand, and the clamping assembly is used to clamp the manhole cover so that the manhole cover is snap-fitted and positioned, and the center of the manhole cover is aligned with the center of the pressure assembly. When testing the bearing capacity of the manhole cover, the central part of the manhole cover is detected. The rotation mechanism is started. Under the action of the support assembly, the rotation mechanism is forced to drive the rotation reciprocating assembly to move, and the rotation reciprocating assembly is forced to move to the first position. At this time, the rotation reciprocating assembly drives the rotation pressing assembly to rotate. Under the action of the adjustment assembly, the rotation pressing assembly is forced to move downward, so that an acute triangle is formed among the rotation reciprocating assembly, the adjustment assembly and the rotation pressing assembly, and the rotation pressing assembly protrudes downward. At this time, the adjustment assembly drives the annular pressing assembly to move and open until the annular pressing assembly is far away from the rotation pressing assembly and the manhole cover. When detecting the central part of the manhole cover, the pressure assembly is started, and the pressure assembly is forced to drive the support assembly, the rotation reciprocating assembly, the adjustment assembly and the rotation pressing assembly to move downward until the rotation pressing assembly contacts the manhole cover. The downward pressing force of the pressure assembly is gradually increased, and the force of the rotation pressing assembly on the manhole cover is gradually increased, so as to realize the detection of the central part of the manhole cover; when detecting the peripheral part of the manhole cover, the rotation mechanism is started. Under the action of the support assembly, the rotation mechanism is forced to drive the rotation reciprocating assembly to move, and the rotation reciprocating assembly is forced to move to the second position. At this time, the rotation reciprocating assembly drives the rotation pressing assembly to rotate. Under the action of the adjustment assembly, the rotation pressing assembly is forced to move upward, so that an obtuse triangle is formed among the rotation reciprocating assembly, the adjustment assembly and the rotation pressing assembly, and the rotation pressing assembly is hidden upward. At this time, the adjustment assembly drives the annular pressing assembly to move and contract until the annular pressing assembly approaches the rotation pressing assembly and the manhole cover, and the annular pressing assembly is forced to protrude downward. When detecting the peripheral part of the manhole cover, the pressure assembly is started, and the pressure assembly is forced to drive the support assembly, the rotation reciprocating assembly, the adjustment assembly and the annular pressing assembly to move downward until the annular pressing assembly contacts the manhole cover, and the downward pressing force of the pressure assembly is gradually increased, so that the force of the annular pressing assembly on the manhole cover is gradually increased, so as to realize the detection of the peripheral part of the manhole cover; when simulating the actual spinning effect, the rotation mechanism is started, and the rotation mechanism is forced to drive the rotating column, the support assembly, the rotation reciprocating assembly, the adjustment assembly and the annular pressing assembly to rotate, and the annular pressing assembly is forced to rotate on the manhole cover, so as to form a spinning effect on the manhole cover and complete the actual simulation action; in summary, a pressure test device for detecting the bearing capacity of a manhole cover of the present application can provide a variety of simulated test environments, so as to realize the detection function integrating the central detection, peripheral detection and spinning detection effects of the manhole cover, which is beneficial to detecting each part of the manhole cover, thereby improving the comprehensive detection effect of the manhole cover, improving the evaluation accuracy of the bearing capacity of the manhole cover, being beneficial to the staff's comprehensive understanding of the manhole cover, improving the subsequent research quality of the manhole cover, improving the safety of the manhole cover, increasing the service life of the manhole cover, and reducing the economic cost of relevant departments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a three-dimensional structural entity diagram of the present invention; Figure 2 is a structural entity diagram of the clamping assembly of the present invention; Figure 3 is a partial structural entity diagram of the present invention; Figure 4 is a structural entity diagram of the pressure assembly of the present invention; Figure 5 is a structural entity diagram of the rotating mechanism of the present invention; Figure 6 is a structural entity diagram of the support assembly of the present invention; Figure 7 is a connection relationship diagram of the rotational reciprocating assembly and the rotational pressing-down assembly of the present invention; Figure 8 is a connection relationship diagram of the adjustment assembly and the annular pressing-down assembly of the present invention; Figure 9 is a structural entity diagram of the adjustment assembly of the present invention; Figure 10 is a structural entity diagram of the annular pressing-down assembly of the present invention.

[0018] In the drawings: 1. Test stand; 2. Clamping assembly; 201. Hydraulic push rod; 202. Clamping block; 3. Pressure assembly; 301. Hydraulic lifting rod; 302. Monitor; 303. Connecting block; 4. Rotating column; 5. Rotating mechanism; 501. Rotating motor; 502. Driving gear; 503. Rotating gear ring; 6. Support assembly; 601. Support ear; 602. Outer support rod; 603. Connecting ear; 604. Inner support rod; 605. Support spring; 7. Rotational reciprocating assembly; 701. Reciprocating threaded rod; 702. Reciprocating threaded sleeve; 8. Rotating mechanism; 801. Rotating motor; 802. First rotating gear; 803. Second rotating gear; 9. Rotational pressing-down assembly; 901. Limiting rod; 902. Unidirectional threaded rod; 903. Pressing-down threaded sleeve; 10. Adjustment assembly; 1001. Adjusting rod; 1002. Inclined fixing block; 1003. Connecting rod; 11. Annular pressing-down assembly; 1101. Support column; 1102. Support block; 1103. Pressing-down roller. Detailed implementation manners

[0019] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention. Embodiment

[0020] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 shown, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention includes a test stand 1, a clamping assembly 2 for clamping the manhole cover is provided on the test stand 1, a pressure assembly 3 is provided on the test stand 1, a rotating column 4 is rotatably connected to the pressure assembly 3, a rotating mechanism 5 for driving the rotating column 4 to rotate is provided on the pressure assembly 3, a support assembly 6 is provided on the rotating column 4, a rotating reciprocating assembly 7 is provided between the support assembly 6 and the rotating column 4, a rotating mechanism 8 for driving the rotating reciprocating assembly 7 to move is provided on the rotating column 4, a rotating pressing assembly 9 for detecting the central part of the manhole cover is provided on the rotating reciprocating assembly 7, an adjusting assembly 10 is provided between the rotating reciprocating assembly 7 and the rotating pressing assembly 9, and an annular pressing assembly 11 for detecting the peripheral part of the manhole cover is provided on the adjusting assembly 10; wherein, when detecting the central part of the manhole cover, the rotating mechanism 8 is forced to drive the rotating reciprocating assembly 7 and the rotating pressing assembly 9 to rotate to the first state, under the pressing action of the pressure assembly 3, the rotating pressing assembly 9 contacts the central part of the manhole cover, and the annular pressing assembly 11 is separated from the peripheral part of the manhole cover, forming a test detection for pressing the center of the manhole cover; when detecting the peripheral part of the manhole cover, the rotating mechanism 8 is forced to drive the rotating reciprocating assembly 7 and the rotating pressing assembly 9 to rotate to the second state, under the pressing action of the pressure assembly 3, the rotating pressing assembly 9 is separated from the central part of the manhole cover, and the annular pressing assembly 11 contacts the peripheral part of the manhole cover, forming a test detection for pressing the periphery of the manhole cover.

[0021] Working principle: When testing the manhole cover, place the manhole cover to be tested on the test stand 1, and use the clamping component 2 to clamp the manhole cover to form a clamping and positioning, so that the center of the manhole cover is aligned with the center of the pressure component 3. When testing the bearing capacity of the manhole cover, the central part of the manhole cover is detected. Start the rotating mechanism 8. Under the action of the supporting component 6, force the rotating mechanism 8 to drive the rotating reciprocating component 7 to move, forcing the rotating reciprocating component 7 to move to the first position. At this time, the rotating reciprocating component 7 drives the rotating pressing component 9 to rotate. Under the action of the adjusting component 10, force the rotating pressing component 9 to move downward, so that the rotating reciprocating component 7, the adjusting component 10 and the rotating pressing component 9 form an acute triangle, making the rotating pressing component 9 protrude downward. At this time, the adjusting component 10 drives the annular pressing component 11 to move and open until the annular pressing component 11 is far away from the rotating pressing component 9 and the manhole cover. When detecting the central part of the manhole cover, start the pressure component 3, force the pressure component 3 to drive the supporting component 6, the rotating reciprocating component 7, the adjusting component 10 and the rotating pressing component 9 to move downward until the rotating pressing component 9 contacts the manhole cover. Gradually increase the downward acting force of the pressure component 3, forcing the acting force of the rotating pressing component 9 on the manhole cover to gradually increase, and realizing the detection of the central part of the manhole cover; When detecting the peripheral part of the manhole cover, start the rotating mechanism 8. Under the action of the supporting component 6, force the rotating mechanism 8 to drive the rotating reciprocating component 7 to move, forcing the rotating reciprocating component 7 to move to the second position. At this time, the rotating reciprocating component 7 drives the rotating pressing component 9 to rotate. Under the action of the adjusting component 10, force the rotating pressing component 9 to move upward, so that the rotating reciprocating component 7, the adjusting component 10 and the rotating pressing component 9 form an obtuse triangle, making the rotating pressing component 9 hide upward. At this time, the adjusting component 10 drives the annular pressing component 11 to move and contract until the annular pressing component 11 approaches the rotating pressing component 9 and the manhole cover, forcing the annular pressing component 11 to protrude downward. When detecting the peripheral part of the manhole cover, start the pressure component 3, force the pressure component 3 to drive the supporting component 6, the rotating reciprocating component 7, the adjusting component 10 and the annular pressing component 11 to move downward until the annular pressing component 11 contacts the manhole cover. Force the downward acting force of the pressure component 3 to gradually increase, making the acting force of the annular pressing component 11 on the manhole cover gradually increase, and realizing the detection of the peripheral part of the manhole cover; When simulating the actual spinning effect, start the rotating mechanism 5, force the rotating mechanism 5 to drive the rotating column 4, the supporting component 6, the rotating reciprocating component 7, the adjusting component 10 and the annular pressing component 11 to rotate, forcing the annular pressing component 11 to rotate on the manhole cover, thus forming a spinning action on the manhole cover and completing the actual simulation action;In summary, a pressure test device for detecting the bearing capacity of inspection wells according to the present application can provide various simulated test environments, thereby realizing a detection function that integrates the central detection, peripheral detection, and spinning detection effects of inspection wells, facilitating the detection of each part of the inspection well, thus improving the effect of comprehensive inspection of the inspection well, improving the accuracy of assessment of the bearing capacity of the inspection well, facilitating the comprehensive understanding of the inspection well by the staff, improving the quality of subsequent research on the inspection well, improving the safety of the inspection well, extending the service life of the inspection well, and reducing the economic cost of relevant departments. Embodiment

[0022] As Figure 1 and Figure 2 shown, a pressure test device for detecting the bearing capacity of inspection wells according to the present invention, the clamping assembly 2 includes a hydraulic push rod 201 installed on the test stand 1, and a plurality of V-shaped clamping blocks 202 are arranged at the output end of the hydraulic push rod 201. The clamping blocks 202 approach each other to achieve the clamping effect on the inspection well.

[0023] As Figure 1 , Figure 3 and Figure 4 shown, a pressure test device for detecting the bearing capacity of inspection wells according to the present invention, the pressure assembly 3 includes a hydraulic lifting rod 301 installed on the test stand 1, a monitor 302 for detecting the magnitude of force is arranged at the output end of the hydraulic lifting rod 301. The monitor 302 is electrically connected to the force sensor and the monitoring system. A connecting block 303 is arranged at the output end of the hydraulic lifting rod 301, and the rotating column 4 is connected to the connecting block 303 by a bearing.

[0024] As Figure 3 and Figure 5 shown, a pressure test device for detecting the bearing capacity of inspection wells according to the present invention, the rotating mechanism 5 includes a rotating motor 501 installed on the connecting block 303, the output shaft of the rotating motor 501 is connected with a driving gear 502, and a rotating gear ring 503 meshing with the driving gear 502 is fixedly sleeved on the outer circle of the rotating column 4.

[0025] As Figure 7 , Figure 8 and Figure 9 shown, a pressure test device for detecting the bearing capacity of inspection wells according to the present invention, the rotating reciprocating assembly 7 includes a reciprocating threaded rod 701 connected to the rotating column 4 by a bearing, a reciprocating threaded sleeve 702 is threadedly connected to the reciprocating threaded rod 701, the reciprocating threaded rod 701 threadedly penetrates through the reciprocating threaded sleeve 702, and when the reciprocating threaded rod 701 rotates unidirectionally, the reciprocating threaded sleeve 702 moves up and down reciprocally.

[0026] As Figure 3 and Figure 6As shown in the figure, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention, the support assembly 6 includes a support ear 601 arranged on the rotating column 4, a support outer rod 602 is arranged on the support ear 601, a connecting ear 603 is arranged on the reciprocating thread sleeve 702, a support inner rod 604 penetrating through the support outer rod 602 is arranged on the connecting ear 603, and a support spring 605 sleeved on the outer circle of the support inner rod 604 is arranged between the connecting ear 603 and the support outer rod 602.

[0027] As Figure 3 and Figure 7 shown in the figure, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention, the rotating mechanism 8 includes a rotating motor 801 installed on the rotating column 4, the output shaft of the rotating motor 801 is connected with a first rotating gear 802, and a second rotating gear 803 meshing with the first rotating gear 802 is fixedly sleeved on the outer circle of the reciprocating threaded rod 701.

[0028] As Figure 3 , Figure 7 , Figure 8 and Figure 9 shown in the figure, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention, the rotating and pressing assembly 9 includes a limiting rod 901 arranged on the reciprocating threaded rod 701, a one-way threaded rod 902 is arranged on the limiting rod 901, a pressing thread sleeve 903 is threadedly connected to the one-way threaded rod 902, when the pressing thread sleeve 903 presses down, the pressing thread sleeve 903 provides a pressing force on the central part of the manhole cover, the one-way threaded rod penetrates through the pressing thread sleeve 903 threadedly, wherein, the length of the pressing threaded rod is twice the length of the reciprocating threaded rod 701.

[0029] As Figure 3 , Figure 8 and Figure 9 shown in the figure, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention, the adjusting assembly 10 includes a plurality of adjusting rods 1001 hinged on the reciprocating thread sleeve 702, an inclined fixing block 1002 is arranged on the pressing thread sleeve 903, a connecting rod 1003 is hinged on the inclined fixing block 1002, and the connecting rod 1003 is hinged on the adjusting rod 1001.

[0030] As Figure 3 , Figure 8 , Figure 9 and Figure 10 shown in the figure, a pressure test device for detecting the bearing capacity of a manhole cover according to the present invention, the annular pressing assembly 11 includes a support column 1101 bearing-connected to the end of the adjusting rod 1001, a support block 1102 is arranged on the support column 1101, a pressing roller 1103 is bearing-connected to the support block 1102, when the pressing roller 1103 presses down, the pressing roller 1103 provides a pressing force on the peripheral part of the manhole cover.

[0031] Working principle: When testing the manhole cover, place the manhole cover to be tested on the test stand 1, start the hydraulic push rod 201, and multiple hydraulic push rods 201 move synchronously, forcing the output end of the hydraulic push rod 201 to drive the clamping block 202 to move forward, forcing the clamping block 202 to contact the manhole cover, achieving the clamping effect on the manhole cover, enabling the manhole cover to form a snap connection and positioning, and aligning the center of the manhole cover with the center of the hydraulic lifting rod 301; When testing the bearing capacity of the manhole cover, first detect the central part of the manhole cover, that is, the device changes from the second state to the first state. Start the rotating motor 801, and the output shaft of the rotating motor 801 rotates to drive the first rotating gear 802 to rotate. The first rotating gear 802 rotates to drive the second rotating gear 803 to rotate. The second rotating gear 803 rotates to drive the reciprocating threaded rod 701 to rotate. Under the guiding action of the support assembly 6, the reciprocating threaded rod 701 is forced to drive the reciprocating threaded sleeve 702 to move downward. Since the reciprocating threaded rod 701 rotates to drive the limiting rod 901 to rotate, and the limiting rod 901 rotates to drive the one-way threaded rod 902 to rotate. Due to the guiding action of the adjusting rod 1001, the inclined fixing block 1002 and the connecting rod 1003, the one-way threaded rod 902 is forced to drive the downward pressing threaded sleeve 903 to move downward. When the downward pressing threaded sleeve 903 moves to half, the rotating motor 801 continues to rotate, and the reciprocating threaded sleeve 702 changes direction, forcing the reciprocating threaded sleeve 702 to move upward until the downward pressing threaded sleeve 903 moves to the lowermost end of the one-way threaded rod 902. At this time, since the length of the downward pressing threaded rod is twice the length of the reciprocating threaded rod 701, the reciprocating threaded sleeve 702 moves to the uppermost end of the reciprocating threaded rod 701, thereby forming an acute triangle among the reciprocating threaded rod 701, the limiting rod 901, the one-way threaded rod 902, the inclined fixing block 1002, the connecting rod 1003 and the adjusting rod 1001, making the one-way threaded rod 902 and the downward pressing threaded sleeve 903 protrude downward, and the adjusting rod 1001 open outward, forcing the adjusting rod 1001 to drive the support column 1101, the support block 1102 and the downward pressing roller 1103 to open accordingly until the downward pressing roller 1103 moves away from the downward pressing threaded sleeve 903 and the manhole cover; Since the downward pressing rollers 1103 are opened around the manhole cover, when the manhole cover cracks during the central detection of the manhole cover, the support block 1102 and the downward pressing roller 1103 can limit the cracking around the manhole cover, preventing the cracked fragments of the manhole cover from damaging the equipment or the surrounding staff and improving the protection ability; Among them, during the up and down movement of the reciprocating threaded sleeve 702, under the action of the support ear 601, the connecting ear 603 drives the support inner rod 604 to slide in the support outer rod 602, and the support spring 605 is compressed or stretched accordingly; After the device completes the transition from the second state to the first state, when detecting the central part of the manhole cover, the hydraulic lifting rod 301 is started. The output end of the hydraulic lifting rod 301 drives the monitor 302 and the connecting block 303 to move downward. The connecting block 303 drives the support assembly 6, the rotating reciprocating assembly 7, the adjusting assembly 10 and the rotating pressing assembly 9 to move downward until the pressing threaded sleeve 903 contacts the manhole cover, forcing the downward pressing force of the hydraulic lifting rod 301 to gradually increase, forcing the acting force of the pressing threaded sleeve 903 on the manhole cover to gradually increase, forcing the acting force to increase to the specified force value, and observing the normal condition of the manhole cover. If it is normal, the manhole cover is qualified; if the manhole cover is abnormal, it is unqualified, thus realizing the detection of the central part of the manhole cover; When detecting the peripheral parts of the manhole cover, that is, when the device changes from the first state to the second state, the rotating motor 801 is started in reverse. The output shaft of the rotating motor 801 rotates in reverse to drive the first rotating gear 802 to rotate in reverse. The rotation of the first rotating gear 802 drives the second rotating gear 803 to rotate in reverse. The rotation of the second rotating gear 803 drives the reciprocating threaded rod 701 to rotate in reverse. Under the guiding action of the support assembly 6, the reciprocating threaded rod 701 is forced to drive the reciprocating threaded sleeve 702 to move downward. Since the rotation of the reciprocating threaded rod 701 drives the limiting rod 901 to rotate in reverse, and the rotation of the limiting rod 901 drives the single-threaded rod 902 to rotate in reverse. Due to the guiding action of the adjusting rod 1001, the inclined fixed block 1002 and the connecting rod 1003, the single-threaded rod 902 is forced to drive the pressing threaded sleeve 903 to move upward. When the pressing threaded sleeve 903 moves to half, the rotating motor 801 continues to rotate, and the reciprocating threaded sleeve 702 changes direction, forcing the reciprocating threaded sleeve 702 to move upward until the pressing threaded sleeve 903 moves to the uppermost end of the single-threaded rod 902. At this time, since the length of the pressing threaded rod is twice the length of the reciprocating threaded rod 701, the reciprocating threaded sleeve 702 moves to the uppermost end of the reciprocating threaded rod 701. Due to the setting of the inclined fixed block 1002, the connecting rod 1003 rotates around the hinge point of the inclined fixed block 1002 and the adjusting rod 1001. The inclined fixed block 1002 is located above the hinge point of the connecting rod 1003 and the adjusting rod 1001. The inclined fixed block 1002 will pull the connecting rod 1003 close to the single-threaded rod 902, forcing the adjusting rod 1001 to contract inward, so that an obtuse triangle is formed among the reciprocating threaded rod 701, the limiting rod 901, the connecting rod 1003 and the adjusting rod 1001, making the pressing threaded sleeve 903 hide upward. The adjusting rod 1001 drives the support column 1101, the support block 1102 and the pressing roller 1103 to contract accordingly until the pressing roller 1103 approaches the pressing threaded sleeve 903 and the manhole cover, and the pressing roller 1103 protrudes, making the single-threaded rod 902 away from the manhole cover; After the device completes the transition from the first state to the second state, when detecting the surrounding parts of the manhole cover, the hydraulic lifting rod 301 is started. The output end of the hydraulic lifting rod 301 drives the monitor 302 and the connecting block 303 to move downward. The connecting block 303 drives the support assembly 6, the rotating reciprocating assembly 7, the adjusting assembly 10 and the annular pressing assembly 11 to move downward until the pressing roller 1103 contacts the manhole cover, forcing the downward pressing force of the hydraulic lifting rod 301 to gradually increase, forcing the acting force of the pressing roller 1103 on the manhole cover to gradually increase, forcing the acting force to increase to the specified force application value, and observing the normal condition of the manhole cover, so as to realize the detection of the surrounding parts of the manhole cover; When simulating the actual spinning effect, the rotating motor 501 is started. The output shaft of the rotating motor 501 rotates to drive the driving gear 502 to rotate. The driving gear 502 rotates to drive the rotating gear ring 503 to rotate, forcing the rotating gear ring 503 to drive the rotating column 4 to rotate. The rotating column 4 rotates to drive the support assembly 6, the rotating reciprocating assembly 7, the adjusting assembly 10 and the annular pressing assembly 11 to rotate, forcing the support block 1102 to drive the pressing roller 1103 to rotate on the manhole cover, so as to form a spinning effect on the manhole cover and complete the actual spinning simulation action.

[0032] This solution can provide a variety of simulation test environments, so as to realize the detection function that integrates the center detection, surrounding detection and spinning detection effects of the manhole cover, which is beneficial to detecting each part of the manhole cover, thus improving the overall detection effect of the manhole cover, improving the accuracy of the evaluation of the bearing capacity of the manhole cover, facilitating the comprehensive understanding of the manhole cover by the staff, improving the quality of the subsequent research on the manhole cover, improving the safety of the manhole cover, increasing the service life of the manhole cover, and reducing the economic cost of relevant departments.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A pressure test device for detecting the bearing capacity of a manhole cover, characterized in that, It includes a test stand (1), on which a clamping assembly (2) for clamping the manhole cover is provided. A pressure assembly (3) is provided on the test stand (1). A rotating column (4) is rotatably connected to the pressure assembly (3). A rotating mechanism (5) for driving the rotation of the rotating column (4) is provided on the pressure assembly (3). A support assembly (6) is provided on the rotating column (4). A rotating reciprocating assembly (7) is provided between the support assembly (6) and the rotating column (4). A rotating mechanism (8) for driving the movement of the rotating reciprocating assembly (7) is provided on the rotating column (4). A rotating and pressing assembly (9) for detecting the central part of the manhole cover is provided on the rotating reciprocating assembly (7). An adjusting assembly (10) is provided between the rotating reciprocating assembly (7) and the rotating and pressing assembly (9). An annular pressing assembly (11) for detecting the peripheral part of the manhole cover is provided on the adjusting assembly (10); wherein, when detecting the central part of the manhole cover, the rotating mechanism (8) is forced to drive the rotating reciprocating assembly (7) and the rotating and pressing assembly (9) to rotate to the first state. Under the pressing action of the pressure assembly (3), the rotating and pressing assembly (9) contacts the central part of the manhole cover, while the annular pressing assembly (11) separates from the peripheral part of the manhole cover, forming a test detection for pressing the center of the manhole cover; when detecting the peripheral part of the manhole cover, the rotating mechanism (8) is forced to drive the rotating reciprocating assembly (7) and the rotating and pressing assembly (9) to rotate to the second state. Under the pressing action of the pressure assembly (3), the rotating and pressing assembly (9) separates from the central part of the manhole cover, while the annular pressing assembly (11) contacts the peripheral part of the manhole cover, forming a test detection for pressing the periphery of the manhole cover.

2. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 1, characterized in that, The clamping assembly (2) includes a hydraulic push rod (201) installed on the test stand (1). A plurality of V-shaped clamping blocks (202) are provided at the output end of the hydraulic push rod (201). The clamping blocks (202) approach each other to achieve the clamping effect on the manhole cover.

3. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 1, characterized in that, The pressure assembly (3) includes a hydraulic lifting rod (301) installed on the test stand (1). A monitor (302) for detecting the magnitude of force is provided at the output end of the hydraulic lifting rod (301). The monitor (302) is electrically connected to a force sensor and a monitoring system. A connecting block (303) is provided at the output end of the hydraulic lifting rod (301). The rotating column (4) is connected to the connecting block (303) by a bearing.

4. A pressure test device for detecting the bearing capacity of a manhole cover according to claim 3, characterized in that, The rotating mechanism (5) includes a rotating motor (501) installed on the connecting block (303). The output shaft of the rotating motor (501) is connected to a driving gear (502). An annular rotating gear (503) meshing with the driving gear (502) is fixedly sleeved on the outer circumference of the rotating column (4).

5. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 1, characterized in that, The rotating reciprocating assembly (7) includes a reciprocating threaded rod (701) bearing-connected to the rotating column (4). A reciprocating threaded sleeve (702) is threadedly connected to the reciprocating threaded rod (701), and the reciprocating threaded rod (701) threadedly penetrates through the reciprocating threaded sleeve (702). When the reciprocating threaded rod (701) rotates unidirectionally, the reciprocating threaded sleeve (702) moves up and down reciprocally.

6. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 5, characterized in that, The support assembly (6) includes a support ear (601) provided on the rotating column (4). A support outer rod (602) is provided on the support ear (601). A connecting ear (603) is provided on the reciprocating threaded sleeve (702). A support inner rod (604) penetrating through the support outer rod (602) is provided on the connecting ear (603). A support spring (605) sleeved on the outer circle of the support inner rod (604) is provided between the connecting ear (603) and the support outer rod (602).

7. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 5, characterized in that, The rotating mechanism (8) includes a rotating motor (801) installed on the rotating column (4). The output shaft of the rotating motor (801) is connected to a first rotating gear (802). A second rotating gear (803) meshing with the first rotating gear (802) is fixedly sleeved on the outer circle of the reciprocating threaded rod (701).

8. A pressure test device for detecting the bearing capacity of a manhole cover according to claim 5, characterized in that, The rotating pressing-down assembly (9) includes a limiting rod (901) provided on the reciprocating threaded rod (701). A unidirectional threaded rod (902) is provided on the limiting rod (901). A pressing-down threaded sleeve (903) is threadedly connected to the unidirectional threaded rod (902). When the pressing-down threaded sleeve (903) presses down, the pressing-down threaded sleeve (903) provides a pressing-down force on the central part of the manhole cover. The unidirectional threaded rod (902) threadedly penetrates through the pressing-down threaded sleeve (903).

9. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 8, characterized in that, The adjusting assembly (10) includes a plurality of adjusting rods (1001) hinged to the reciprocating threaded sleeve (702). An inclined fixing block (1002) is provided on the pressing-down threaded sleeve (903). A connecting rod (1003) is hinged to the inclined fixing block (1002), and the connecting rod (1003) is hinged to the adjusting rod (1001).

10. The pressure test device for detecting the bearing capacity of a manhole cover according to claim 9, characterized in that, The annular pressing-down assembly (11) includes a support column (1101) bearing-connected to the end of the adjusting rod (1001). A support block (1102) is provided on the support column (1101). A pressing-down roller (1103) is bearing-connected to the support block (1102). When the pressing-down roller (1103) presses down, the pressing-down roller (1103) provides a pressing-down force on the peripheral part of the manhole cover.

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