CN116335105B - Highway subgrade fixed-point compression pressure measuring device - Google Patents
Highway subgrade fixed-point compression pressure measuring device Download PDFInfo
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- CN116335105B CN116335105B CN202310525158.XA CN202310525158A CN116335105B CN 116335105 B CN116335105 B CN 116335105B CN 202310525158 A CN202310525158 A CN 202310525158A CN 116335105 B CN116335105 B CN 116335105B
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- 230000005484 gravity Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- 229910000831 Steel Inorganic materials 0.000 claims description 30
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- 238000004062 sedimentation Methods 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
Abstract
The invention discloses a highway subgrade fixed-point compression pressure measurement device, and relates to the field of highway subgrade pressure measurement. The scheme is that the device comprises a platform and a measuring mechanism arranged on the platform, wherein the measuring mechanism consists of a bearing plate, an action rod, a dial indicator, a force measuring ring and a jack which are distributed from bottom to top, at least two counter force mechanisms are distributed on the outer side of the platform, and each counter force mechanism consists of a force application component and a counterweight component which is assembled on the force application component and provides gravity for the force application component. Through a plurality of counter-force mechanisms of outside distribution at the platform, every counter-force mechanism can all remove the assembly alone, does benefit to the construction of different measurement scenes to counter-force mechanism is through the lever principle wherein force application subassembly with counter-force amplification that counter-weight subassembly provided apply to measuring mechanism, has reduced the gravity of counter weight, more does benefit to counter-force mechanism's removal.
Description
Technical Field
The invention relates to the field of highway subgrade pressure measurement, in particular to a highway subgrade fixed-point pressing pressure measurement device.
Background
When the highway is built, the bearing capacity of the roadbed is required to be measured, the next work is carried out after the measurement is qualified, and the fixed-point pressing force measurement is one of the bearing capacity measurement.
Chinese patent publication No. CN114441333a discloses a highway subgrade fixed-point compression pressure measuring device. It includes the mounting bracket and sets up the press device on the mounting bracket, and the bottom four corners department of mounting bracket is provided with strutting arrangement, and press device's upside is provided with angle adjusting device, and the mounting bracket includes the mounting panel, and the mounting panel upside is close to the position fixing in middle part has two straight posts. According to the road pressure measuring device, the pressing device is driven to rotate on the mounting frame through the arranged angle adjusting device, the pressing direction of the pressing device on the road surface is changed, the stress condition of the road is simulated when the road is used, accurate data of road measurement are obtained, the accuracy of judging the stress range is improved, the pressing device is arranged in a semi-arc shape, when the pressing device is driven to rotate, the hydraulic rod pushes the pressing device to simulate the condition that wheels roll the road, and the accuracy of measuring the road stress data is improved.
The force measurement has a problem, and at present, the necessary factors for measuring the force are a counter-force device, a jack, a force measuring ring, a dial indicator and a bearing plate, wherein the force measuring ring is used for detecting the applied pressure and the dial indicator is used for detecting sedimentation, the counter-force device is used for providing gravity for the jack, so that the force applied by the jack can act on a roadbed through the bearing plate;
the chinese patent publication No. CN114441333a discloses a positioning device as a counter force device, wherein the positioning device is fixed on the ground by the cooperation of the fiber ropes and the thorn cones at the four corners of the positioning device, which will destroy the roadbed, and the required counter force gravity needs at least 30KN to achieve the measurement purpose, and the fixation force between the thorn cone and the ground is difficult to achieve by only the cooperation of the fiber ropes and the thorn cones.
At present, the main mode for providing reaction force for measurement is realized by adding a counterweight stone block through a steel structure, the construction needs crane cooperation, the implementation steps are complex, and the measurement efficiency is influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a highway subgrade fixed-point pressing pressure measuring device so as to realize the purposes of strong power of a counterweight machine, convenience in construction and improvement of measuring efficiency.
In order to achieve the technical purpose, the invention provides a highway subgrade fixed-point compression pressure measuring device which comprises:
the measuring mechanism comprises a platform and a measuring mechanism arranged on the platform, wherein the measuring mechanism is composed of a bearing plate, an action rod, a dial indicator, a force measuring ring and a jack which are distributed from bottom to top, at least two counterforce mechanisms are distributed on the outer side of the platform, each counterforce mechanism is composed of a force application component and a counterweight component which is assembled on the force application component and provides gravity for the force application component, the force application component mainly comprises a supporting plate, a first supporting rod, a second supporting rod, a force application beam, a pulley block and a first steel rope, the first supporting rod and the second supporting rod are vertically fixed on the supporting plate, the lower surface of the force application beam is rotationally connected with the second supporting rod, the pulley block is arranged on the first supporting rod, one end of the first steel rope is connected with the counterweight component, the other end of the first steel rope penetrates through the pulley block and is connected with the end of the force application beam, the other end of the force application beam is abutted against the jack, and the counterweight component mainly comprises a counterweight bucket and a supporting component for supporting the counterweight bucket.
Preferably, the loading board is arranged in the platform, the lower surface of the loading board is flush with the lower surface of the platform, the bottom of the acting rod is fixedly connected with the center of the upper surface of the loading board, the two ends of the force measuring ring are respectively fixedly connected with the jack and the acting rod, and the dial indicators are fixed on the two sides of the acting rod.
Preferably, the top of jack is equipped with coupling assembling, coupling assembling comprises connecting plate and go-between, the top at the jack is fixed to the connecting plate, the go-between is fixed at the upper surface of connecting plate, the tip both sides of the adjacent go-between of application of force roof beam all are fixed with the depression bar, depression bar and go-between sliding connection, the lower surface of connecting plate is fixed with the hangers.
Preferably, the top of the second supporting rod is rotatably connected with a first connecting seat through a shaft, and the upper surface of the first connecting seat is fixedly connected with the lower surface of the force application beam.
Preferably, the pulley block is composed of a first guide wheel and a second guide wheel, two first support rods are arranged, the two first support rods are distributed on two sides of the pulley block, and two sides of the first guide wheel and two sides of the second guide wheel are in rotary connection with the first support rods through the cooperation of bearings and bearing seats.
Preferably, a second connecting seat is fixed on the upper surface of the counterweight water bucket, and the end part of the first steel cable is fixedly connected with the center of the second connecting seat.
Preferably, the counterweight assembly further comprises a two-way valve, the two-way valve is composed of a valve pipe, a valve core, a pull ring, a limiting cylinder and a first spring, one end of the valve pipe is L-shaped, the L-shaped end of the valve pipe penetrates through the counterweight water barrel and is fixedly connected with the counterweight water barrel, one end of the valve core is inserted into the valve pipe, the limiting cylinder is sleeved on the valve core, the limiting cylinder is fixedly connected with the valve pipe through threads, one end of the pull ring is annular, the other end of the pull ring penetrates through the limiting cylinder and is fixedly connected with the valve core, the first spring is sleeved on the pull ring inside the limiting cylinder, two ends of the first spring are respectively abutted against the inner wall of the limiting cylinder and the valve core, and the force application assembly further comprises a second steel cable, and two ends of the second steel cable are respectively fixedly connected with the annular end of the pull ring and the hanging lugs.
Preferably, the supporting component comprises a first supporting plate, supporting columns, a second supporting plate, supporting sleeves and water guide pipes, wherein the first supporting plate is fixed at the bottom of the counterweight bucket, the second supporting plate is fixed on the upper surface of the platform, the supporting sleeves are uniformly fixed on the upper surface of the second supporting plate, the supporting columns with the same number and positions as those of the supporting sleeves are uniformly fixed on the lower surface of the first supporting plate, the supporting sleeves are sleeved on the supporting columns, the supporting columns are in sliding connection with the supporting sleeves, and the inner cavities of the supporting sleeves are mutually communicated through a plurality of water guide pipes, and one of the supporting columns is provided with a water feeding valve.
Preferably, the water supply valve comprises a water supply pipe, a valve cylinder, a limiting rod, a second spring and a valve nail, wherein the water supply pipe sequentially penetrates through one of the supporting columns and the counterweight bucket, the water supply pipe is fixedly connected with the supporting columns, the valve cylinder is sleeved and fixed at the bottom of the water supply pipe, the limiting rod is fixed inside the valve cylinder, the limiting rod is sleeved on the valve nail, the valve nail is in sliding connection with the limiting rod, the lower surface of the valve nail abuts against the inner wall of the valve cylinder, the second spring is sleeved on the valve nail, and two ends of the second spring abut against the limiting rod and the valve nail respectively.
Preferably, the auxiliary moving components are assembled on two sides of the first supporting plate, the auxiliary moving components are composed of a connecting beam, a roller frame, supporting piles and rollers, the connecting beam is fixed on the first supporting plate, the supporting piles are fixed on the supporting plates, the side edges of the roller frame are rotationally connected with the supporting piles through shafts, waist round grooves are formed in one end of the roller frame, the other end of the roller frame is rotationally connected with the rollers through shafts, and two ends of the connecting beam are slidably connected with the waist round grooves through shafts.
From the above technical scheme, the application has the following beneficial effects:
through a plurality of counter-force mechanisms of outside distribution at the platform, every counter-force mechanism can all remove the assembly alone, does benefit to the construction of different measurement scenes to counter-force mechanism amplifies and applys the counter-force that the counter-force subassembly provided and gives measuring mechanism through the lever principle wherein application of force subassembly, has reduced the gravity of counter-weight, more does benefit to the removal of counter-force mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a highway subgrade fixed-point compression pressure measuring device provided by the invention;
FIG. 2 is a schematic top view of a highway subgrade fixed-point compression pressure measuring device according to the present invention;
FIG. 3 is a schematic view of the structure of the highway subgrade fixed-point compression pressure measuring device shown in section A-A in FIG. 2;
FIG. 4 is a schematic view of the whole structure of the measuring mechanism in FIG. 1 of a highway subgrade fixed-point pressing pressure measuring device provided by the invention;
FIG. 5 is a schematic view of the overall construction of the counterweight assembly of FIG. 1 of a highway subgrade fixed-point compression pressure measuring device provided by the present invention;
FIG. 6 is a schematic view of the whole structure of the two-way valve in FIG. 5 of a highway subgrade fixed-point pressing pressure measuring device provided by the invention;
FIG. 7 is a schematic view of the overall structure of the support assembly of FIG. 5 of a highway subgrade fixed-point compression pressure measuring device according to the present invention;
FIG. 8 is a schematic view of the whole structure of the water supply valve in FIG. 3 of the highway subgrade fixed-point pressing pressure measuring device provided by the invention;
FIG. 9 is a schematic view of the whole structure of the auxiliary moving assembly in FIG. 5 of a highway subgrade fixed-point pressing pressure measuring device provided by the invention;
FIG. 10 is a schematic cross-sectional view of the apparatus for measuring the fixed-point compression pressure of a highway subgrade according to the present invention;
fig. 11 is a schematic view showing another state structure of fig. 3 of a highway subgrade fixed-point pressing pressure measuring device provided by the invention.
Description of the drawings: 1. a platform; 2. a measuring mechanism; 21. a carrying plate; 22. an action lever; 23. a dial indicator; 24. a force measuring ring; 25. a jack; 3. a connection assembly; 31. a connecting plate; 32. a connecting ring; 4. a force application assembly; 41. a supporting plate; 42. a first support bar; 43. a second support bar; 44. a force application beam; 45. the first guide wheel; 46. the second guide wheel; 47. a first connection base; 48. a first wire rope; 49. a second wire rope; 5. a counterweight assembly; 51. a counterweight bucket; 52. a second connecting seat; 53. a two-way valve; 531. a valve tube; 532. a valve core; 533. a pull ring; 534. a limiting cylinder; 535. a first spring; 54. a support assembly; 541. a first support plate; 542. a support column; 543. a second support plate; 544. a support sleeve; 545. a water conduit; 55. a water supply valve; 551. a water supply pipe; 552. a valve cylinder; 553. a limit rod; 554. a second spring; 555. valve nails; 56. an auxiliary moving assembly; 561. a connecting beam; 562. a roller frame; 563. supporting piles; 564. and a roller.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures may be shown in exaggerated form in particular figures to illustrate related details or structures of embodiments of the present disclosure.
Referring to fig. 1-11, in a first embodiment, a highway subgrade fixed-point pressing pressure measuring device comprises a platform 1 and measuring mechanisms 2 mounted on the platform 1, as shown in fig. 3 and 4, the measuring mechanisms 2 are composed of a bearing plate 21, an action rod 22, a dial indicator 23, a force measuring ring 24 and a jack 25 which are distributed from bottom to top, the bearing plate 21 is arranged in the platform 1, the lower surface of the bearing plate 21 is flush with the lower surface of the platform 1, the bottom of the action rod 22 is fixedly connected with the center of the upper surface of the bearing plate 21, two ends of the force measuring ring 24 are fixedly connected with a jack 25 and the action rod 22 respectively, the dial indicator 23 is fixed on two sides of the action rod 22, during measurement, the lower surfaces of the platform 1 and the bearing plate 21 are both placed on a road base surface, the jack 25 provides pressure for the action rod 22, the action rod 22 provides pressure for the subgrade through the bearing plate 21, the action rod 22 is in sliding connection with the platform 1, the subgrade is not affected by heavy depression, the dial indicator 23 can descend along with the action rod 22, the action rod 23 is used for measuring the distance between the dial indicator 23 and the platform 1, the measuring ring 24 is not used for measuring the distance between the two layers, and the measuring ring 24 is not needed, and the pressure measuring ring is provided.
In order to ensure that the force provided by the jack 25 can smoothly act on the action rod 22, a certain counter force needs to be provided for the jack 25, so that at least two counter force mechanisms are distributed on the outer side of the platform 1, and the more the number of the counter force mechanisms is, the more the weight can be changed, so that the larger the counter force can be provided for the jack 25;
specifically, the reaction mechanism is composed of a force application component 4 and a counterweight component 5 assembled on the force application component 4 and used for providing gravity for the force application component 4, the force application component 4 mainly comprises a supporting plate 41, a first supporting rod 42, a second supporting rod 43, a force application beam 44, a pulley block and a first steel cable 48, the first supporting rod 42 and the second supporting rod 43 are vertically fixed on the supporting plate 41, the lower surface of the force application beam 44 is rotationally connected with the second supporting rod 43, the pulley block is arranged on the first supporting rod 42, one end of the first steel cable 48 is connected with the counterweight component 5, the other end of the first steel cable 48 passes through the pulley block and is connected with the end of the force application beam 44, the other end of the force application beam 44 is propped against the jack 25, the counterweight component 5 comprises a counterweight bucket 51, and the counterweight bucket 51 can pull one end of the force application beam 44 through the first steel cable 48 to enable the other end of the force application beam 44 to apply pressure to the jack 25 by injecting water into the counterweight bucket 51;
the pulley block is composed of a first guide wheel 45 and a second guide wheel 46, two first support rods 42 are arranged on two sides of the pulley block, two sides of the first guide wheel 45 and the second guide wheel 46 are matched with the first support rods 42 through bearings and bearing seats to be connected in a rotating mode, a first steel cable 48 is arranged on the first guide wheel 45 and the second guide wheel 46 and is connected with a force application beam 44 and a counterweight water bucket 51, and when the counterweight water bucket 51 descends, the counterweight water bucket 51 pulls one end, connected with the force application beam 44 and the first steel cable 48, of the counterweight water bucket 51 to ascend through the first steel cable 48;
as shown in fig. 3, the top of the second support bar 43 is rotatably connected with a first connection seat 47 through a shaft, and the upper surface of the first connection seat 47 is fixedly connected with the lower surface of the force application beam 44, the first connection seat 47 and the second support bar 43 form a lever structure, so that the required weight of the weight balancing bucket 51 is reduced.
Since the force-applying beam 44 of the lever structure rotates along with the first connecting seat 47, the connection point between the rotated force-applying beam 44 and the jack 25 is changed, and in order to make the force applied by the force-applying beam 44 be always and stably applied to the jack 25, the connecting assembly 3 is assembled on the top of the jack 25 to connect the force-applying beam 44 and the jack 25;
specifically, as shown in fig. 1, the connecting assembly 3 is composed of a connecting plate 31 and a connecting ring 32, the connecting plate 31 is fixed at the top of the jack 25, the connecting ring 32 is fixed on the upper surface of the connecting plate 31, compression bars are fixed at two sides of the end parts of the connecting ring 32 adjacent to the force application beam 44, and the compression bars are in sliding connection with the connecting ring 32, so that the change of the connecting point when the force application beam 44 rotates is met, the force of the force application beam 44 can be ensured to be stably applied to the connecting ring 32, and then the force is transferred to the jack 25 by the connecting plate 31.
Further, as shown in fig. 5, a second connection seat 52 is fixed on the upper surface of the counterweight water bucket 51, and the end of the first steel cable 48 is fixedly connected with the center of the second connection seat 52, so that the installation of the first steel cable 48 is facilitated.
The magnitude of the reaction force to the jack 25 is changed due to the fact that the pressing force applied to the road base surface by the pressure measurement is required to be changed according to the actual demand, and in order to facilitate the movement of the reaction force mechanism, the weight of the weight water barrel 51 is not required to be in a full load state when the weight water barrel is not measured, and in order to enable the weight of the weight water barrel 51 to be automatically increased along with the increase of the pressing force applied to the road base, the weight assembly 5 further comprises a two-way valve 53, wherein the two-way valve 53 is composed of a valve pipe 531, a valve core 532, a pull ring 533, a limiting barrel 534 and a first spring 535, one end of the valve pipe 531 is in an L shape, the L-shaped end of the valve pipe 531 penetrates the weight water barrel 51 and is fixedly connected with the weight water barrel 51, the other end side surface of the valve pipe 531 is vertically connected with a branch pipe, as shown in fig. 6, the channel between the branch pipe and the valve pipe 531 is controlled by the valve core 532, when the valve core 532 is completely inserted into the valve pipe 531, the connection point between the branch pipe and the valve pipe 531 can be blocked, the limiting barrel 534 is sleeved on the valve core 532 and is fixed with the valve pipe 531 through threaded connection, the valve core 532 is limited, one end of the pull ring 533 is annular, the other end of the pull ring 533 passes through the limiting barrel 534 and is fixedly connected with the valve core 532, the valve core 532 can be pulled by pulling the pull ring 533, the first spring 535 is sleeved on the pull ring 533 positioned in the limiting barrel 534, two ends of the first spring 535 are respectively propped against the inner wall of the limiting barrel 534 and the valve core 532, and the first spring 535 is used for providing elasticity for the valve core 532;
further, the force application assembly 4 further includes a second steel cable 49, a hanging lug is fixed on the lower surface of the connecting plate 31, two ends of the second steel cable 49 are fixedly connected with the annular end of the pull ring 533 and the hanging lug respectively, when the connecting plate 31 rises, i.e. the pressing force of the jack 25 is not completely applied to the ground surface, the connecting plate 31 pulls the pull ring 533, thereby opening the branch pipe, and allowing external water to be supplied into the counterweight water bucket 51 through the branch pipe to increase the counterweight.
In order to satisfy the requirement that the counterweight water bucket 51 can drop to pull the first steel cable 48, a supporting component 54 is arranged at the bottom of the counterweight water bucket 51, and when the gravity of the counterweight water bucket 51 increases, the supporting component 54 can drop;
specifically, as shown in fig. 7, the support assembly 54 is composed of a first support plate 541, support columns 542, a second support plate 543, support sleeves 544 and water guide pipes 545, the first support plate 541 is fixed at the bottom of the counterweight water bucket 51, the second support plate 543 is fixed at the upper surface of the platform 1, the support sleeves 544 are uniformly fixed on the upper surface of the second support plate 543, the support columns 542 with the same number and positions as those of the support sleeves 544 are uniformly fixed on the lower surface of the first support plate 541, the support sleeves 544 are sleeved on the support columns 542, the support columns 542 are in sliding connection with the support sleeves 544, the inner cavities of the support sleeves 544 are all communicated with each other through the water guide pipes 545, the bottom of one support sleeve 544 is provided with a water inlet valve (not shown), the water inlet valve can only be filled with water but not be discharged from the water inlet valve 544, under normal conditions, as shown in fig. 11, the support sleeves 544 are filled with water, the counterweight water bucket 51 is empty, the water pressure can support columns 542 and the counterweight water bucket 51 are supported, with the water feed valve 55 is increased in the counterweight water bucket 51, the counterweight water in the support sleeves 544 is filled into the support sleeves through the water guide pipes 545, and the counterweight water is discharged into the counterweight water bucket 51.
As shown in fig. 8 and 10, the water supply valve 55 is composed of a water supply pipe 551, a valve cylinder 552, a limit rod 553, a second spring 554 and a valve nail 555, the water supply pipe 551 sequentially penetrates through one support column 542 and the counterweight water barrel 51, the water supply pipe 551 is fixedly connected with the support column 542, the valve cylinder 552 is sleeved and fixed at the bottom of the water supply pipe 551, the limit rod 553 is fixed inside the valve cylinder 552, the limit rod 553 is sleeved on the valve nail 555, the valve nail 555 is slidably connected with the limit rod 553, the lower surface of the valve nail 555 abuts against the inner wall of the valve cylinder 552, the second spring 554 is sleeved on the valve nail 555, two ends of the second spring 554 abut against the limit rod 553 and the valve nail 555 respectively, when the water pressure in the support sleeve 544 is greater than the elastic force of the second spring 554, the water pushes the valve nail 555 to rise, the water can enter the water supply pipe 551 through the bottom of the valve cylinder 552, and then is discharged into the counterweight water barrel 51.
As shown in fig. 3, 5, 9 and 1, in order to facilitate the movement of the back pressure mechanism, the two sides of the first support plate 541 are equipped with auxiliary moving components 56, the auxiliary moving components 56 are composed of a connection beam 561, a roller frame 562, a support pile 563 and a roller 564, the connection beam 561 is fixed on the first support plate 541, the support pile 563 is fixed on the support plate 41, the side edge of the roller frame 562 is rotationally connected with the support pile 563 through a shaft, a waist round groove is formed at one end of the roller frame 562, the other end of the roller frame 562 is rotationally connected with the roller 564 through a shaft, both ends of the connection beam 561 are slidably connected with the waist round groove through a shaft, and when the first support plate 541 moves upwards, the roller frame 562 can drive the roller 564 to support the support plate 41 through the roller frame 562, otherwise the roller frame 562 can be retracted.
Working principle: in measurement, the bearing plate 21 is placed on a ground surface to be measured by fixed-point compression, then the platform 1 is covered on the bearing plate, the action bars 22 penetrate through the platform 1 and are fixed on the bearing plate 21, as shown in fig. 4, the jacks 25 provide pressure for the action bars 22, the action bars 22 compress the ground surface through the bearing plate 21, the compression force is displayed on the force measuring ring 24, the dial indicators 23 measure the distance change with the platform 1, so that sedimentation data of the ground surface under different compression forces are obtained, and the measurement principle and related structures of the dial indicators 23 and the force measuring ring 24 are known and disclosed technologies and are not described in detail herein;
when the counterforce mechanisms are arranged, the number of the counterforce mechanisms is selected according to the measurement requirement, the counterforce mechanisms are required to be symmetrically distributed, the balance of force is ensured to be applied to the connecting plate 31, after the arrangement is completed, as shown in fig. 11, one end of the force application beam 44 connected with the connecting plate 31 is lower than one end of the force application beam 44 connected with the first steel cable 48, the bottoms of the rollers 564 are supported on the foundation to be level with the platform 1 and the bearing plate 21, and then an external water source is connected and fixed with branches of the valve pipe 531 through a water pipe;
then, oil pressure is provided for the jack 25, so that the jack 25 applies pressure to the connecting plate 31 and the action rod 22 simultaneously, at the moment, the interior of the counterweight water barrel 51 is in an empty state, no counter force is provided for the force application beam 44, the force application beam 44 and the connecting plate 31 can be jacked up by the jack 25, the pull ring 533 is pulled by the second steel cable 49 after the connecting plate 31 ascends, the valve core 532 is pulled outwards by the pull ring 533 to be away from the branch of the valve pipe 531, and an external water source is communicated with the interior of the counterweight water barrel 51 through the valve pipe 531;
then, an external water source supplies water into the counterweight water bucket 51 through the valve pipe 531 to increase the weight of the counterweight water bucket 51, the counterweight water bucket 51 drives the first support plate 541 and the support column 542 to press downwards, the support column 542 presses water reserved in the support sleeve 544 into the counterweight water bucket 51 through the water supply valve 55, so that the counterweight water bucket 51 can fall, the first support plate 541 follows the counterweight water bucket 51 to fall while the counterweight water bucket 51 falls, the first support plate 541 presses the roller frame 562 through the connecting beam 561, so that the roller 564 is lifted and far away from a ground surface, and the support plate 41 finally falls onto the ground surface;
simultaneously, when the counterweight water barrel 51 falls, the first steel cable 48 is pulled through the second connecting seat 52, the first steel cable 48 pulls the force applying beam 44 through the pulley block to be connected with one end of the first steel cable 48 to rise, so that one end of the force applying beam 44 connected with the connecting ring 32 provides counter force for the connecting plate 31, the jack 25 applies downward force to the ground base surface through the action rod 22 and the bearing plate 21, the pressing force provided by the jack 25 is increased to exceed the counter force provided by the force applying beam 44, once the force applying beam 44 is reversely jacked, the two-way valve 53 can be opened, and an external water source supplies water into the counterweight water barrel 51 to increase the counterweight of the counterweight water barrel 51, so that the counterweight can be automatically lifted according to the actual measurement environment without excessive counterweight is ensured;
after the measurement is completed, the water in the counterweight water bucket 51 is pumped away through the water outlet valve at the bottom of the counterweight water bucket 51, and the support columns 542 are jacked up by injecting water into the support sleeves 544 through the water inlet valve at the bottom of one of the support sleeves 544, so that the first support plate 541 is lifted to drive the roller frame 562 to press down, the roller 564 is used for supporting the force application assembly 4 again, and the force application assembly 4 is convenient to transfer.
In the second embodiment, the medium for providing pressure between the support sleeve 544 and the support column 542 can be changed into oil pressure based on the first embodiment, and the difference is that a hydraulic oil pump needs to be added after the oil pressure is used, and the water supply valve 55 can be replaced by a pressure release valve, the depressurized oil returns to the oil tank of the hydraulic oil pump, the pressure release critical pressure value of the pressure release valve is greater than the supporting force of the idler reaction mechanism supported by the roller 564, and water injection starts in the counterweight bucket 51, the pressure release valve releases pressure, and the counterweight bucket 51 and the roller frame 562 descend.
The exemplary implementation of the solution proposed by the present disclosure has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various combinations of the technical features, structures proposed by the present disclosure can be made without departing from the scope of the present disclosure, which is defined by the appended claims.
Claims (7)
1. The highway subgrade fixed-point pressing pressure measuring device comprises a platform (1) and a measuring mechanism (2) arranged on the platform (1), wherein the measuring mechanism (2) is composed of a bearing plate (21), an action rod (22), a dial indicator (23), a force measuring ring (24) and a jack (25) which are distributed from bottom to top, and is characterized in that at least two counterforce mechanisms are distributed on the outer side of the platform (1), each counterforce mechanism is composed of a force application component (4) and a counterweight component (5) which is assembled on the force application component (4) and provides gravity for the force application component (4), the force application component (4) mainly comprises a bearing plate (41), a first supporting rod (42), a second supporting rod (43), a force application beam (44), a pulley block and a first steel cable (48), the first supporting rod (42) and the second supporting rod (43) are vertically fixed on the bearing plate (41), the lower surface of the force application beam (44) is rotationally connected with the second supporting rod (43), one end of the counterweight component (48) is connected with the counterweight component (5) to the other end of the first supporting rod (48) which is abutted against the other end of the first steel cable (44) and the other end of the first steel cable (44) passes through the end of the force application beam (44), the counterweight assembly (5) mainly comprises a counterweight water bucket (51) and a supporting assembly (54) for supporting the counterweight water bucket (51), the top of the jack (25) is provided with a connecting assembly (3), the connecting assembly (3) is composed of a connecting plate (31) and a connecting ring (32), the connecting plate (31) is fixed at the top of the jack (25), the connecting ring (32) is fixed on the upper surface of the connecting plate (31), a pressing rod is fixed on two sides of the end part of the force application beam (44) adjacent to the connecting ring (32), the pressing rod is in sliding connection with the connecting ring (32), a hanging lug is fixed on the lower surface of the connecting plate (31), the counterweight assembly (5) further comprises a two-way valve (53), the two-way valve (53) is composed of a valve pipe (531), a valve core (532), a pull ring (533), a limiting cylinder (534) and a first spring (535), one end of the valve pipe (531) is L-shaped, the counterweight end part of the valve pipe (531) penetrates through the counterweight water bucket (51) and is fixedly connected with the water bucket (32) at one end of the limiting cylinder (532) through the connecting ring (532) and is fixedly connected with the valve core (532) at one end (532) of the limiting cylinder (532), the other end of the pull ring (533) passes through the limit cylinder (534) and is fixedly connected with the valve core (532), the first spring (535) is sleeved on the pull ring (533) positioned in the limit cylinder (534), the two ends of the first spring (535) are respectively propped against the inner wall of the limit cylinder (534) and the valve core (532), the force application assembly (4) further comprises a second steel cable (49), the two ends of the second steel cable (49) are respectively fixedly connected with the annular ends and the hangers of the pull ring (533), the support assembly (54) is composed of a first support plate (541), support columns (542), a second support plate (543), support sleeves (544) and a water guide tube (545), the first support plate (541) is fixed at the bottom of the counterweight cylinder (51), the second support plates (543) are fixed on the upper surface of the platform (1), the upper surface of the second support plates (541) is uniformly fixed with support sleeves (541), the lower surfaces of the first support plates (544) are uniformly fixed with the same number and positions of the support sleeves (544), the support sleeves (542) are connected with the support columns (542) through the support sleeves (542) in a plurality of the support sleeves (545) in a sliding mode, one of the support columns (542) is provided with a water supply valve (55).
2. The highway subgrade fixed-point pressing pressure measurement device according to claim 1, characterized in that the bearing plate (21) is arranged in the platform (1), the lower surface of the bearing plate (21) is flush with the lower surface of the platform (1), the bottom of the acting rod (22) is fixedly connected with the center of the upper surface of the bearing plate (21), two ends of the force measuring ring (24) are respectively fixedly connected with the jack (25) and the acting rod (22), and the dial indicators (23) are fixed on two sides of the acting rod (22).
3. The highway subgrade fixed-point pressing pressure measuring device according to claim 1, wherein the top of the second supporting rod (43) is rotatably connected with a first connecting seat (47) through a shaft, and the upper surface of the first connecting seat (47) is fixedly connected with the lower surface of the force application beam (44).
4. The highway subgrade fixed-point pressing pressure measurement device according to claim 1, characterized in that the pulley block is composed of a first guide wheel (45) and a second guide wheel (46), two first support rods (42) are arranged on two sides of the pulley block, and two sides of the first guide wheel (45) and two sides of the second guide wheel (46) are rotatably connected with the first support rods (42) through matching of bearings and bearing seats.
5. The highway subgrade fixed-point pressing pressure measuring device according to claim 1, wherein a second connecting seat (52) is fixed on the upper surface of the counterweight water bucket (51), and the end part of the first steel cable (48) is fixedly connected with the center of the second connecting seat (52).
6. The highway subgrade fixed-point pressing pressure measurement device according to claim 1, characterized in that the water supply valve (55) is composed of a water supply pipe (551), a valve cylinder (552), a limit rod (553), a second spring (554) and a valve nail (555), the water supply pipe (551) sequentially penetrates through one of a support column (542) and a counterweight water bucket (51), the water supply pipe (551) is fixedly connected with the support column (542), the valve cylinder (552) is sleeved and fixed at the bottom of the water supply pipe (551), the limit rod (553) is fixed inside the valve cylinder (552), the limit rod (553) is sleeved on a valve nail (555), the valve nail (555) is in sliding connection with the limit rod (553), the lower surface of the valve nail (555) is abutted against the inner wall of the valve cylinder (552), the second spring (554) is sleeved on the valve nail (555), and two ends of the second spring (554) are respectively abutted against the limit rod (553) and the valve nail (555).
7. The highway subgrade fixed-point pressing pressure measurement device according to claim 1, characterized in that both sides of the first support plate (541) are equipped with auxiliary moving components (56), the auxiliary moving components (56) are composed of a connecting beam (561), a roller frame (562), support piles (563) and rollers (564), the connecting beam (561) is fixed on the first support plate (541), the support piles (563) are fixed on the support plate (41), the side edges of the roller frame (562) are rotationally connected with the support piles (563) through shafts, waist round grooves are formed in one end of the roller frame (562), the other end of the roller frame (562) is rotationally connected with the rollers (564) through shafts, and both ends of the connecting beam (561) are slidingly connected with the waist round grooves through shafts.
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| CN202310525158.XA CN116335105B (en) | 2023-05-11 | 2023-05-11 | Highway subgrade fixed-point compression pressure measuring device |
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| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
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| JP3083484B2 (en) * | 1996-10-16 | 2000-09-04 | 財団法人 林業土木コンサルタンツ | Apparatus and method for measuring foundation support capacity of structures |
| CN201340369Y (en) * | 2009-01-23 | 2009-11-04 | 长安大学 | Indoor test platform for roadbed soil mass resilience modulus |
| TW201420484A (en) * | 2012-11-16 | 2014-06-01 | Hai Yang Energy Technology Co Ltd | Extendable tower crane system |
| CN204266260U (en) * | 2014-11-17 | 2015-04-15 | 段伟 | A kind of experimental rig pile foundation being applied to load obliquely on centrifuge |
| CN106841577B (en) * | 2017-04-12 | 2024-01-30 | 山东大学 | Concrete loading device and method applicable to load-environment coupling effect |
| CN208501656U (en) * | 2018-06-25 | 2019-02-15 | 中路高科交通检测检验认证有限公司 | A kind of scene loading plate method Rebound Modulus of Subgrade measurement device |
| CN213068495U (en) * | 2020-06-29 | 2021-04-27 | 黑龙江省公路桥梁勘测设计院有限公司 | Highway road surface compressive capacity detection device |
| CN215339300U (en) * | 2021-06-21 | 2021-12-28 | 范红英 | Highway subgrade road surface witnessed inspections is with bearing than measuring device |
| CN114441333B (en) * | 2022-04-11 | 2022-06-21 | 深圳市中航环海建设工程有限公司 | Highway subgrade fixed-point compression pressure measuring device |
| CN217559459U (en) * | 2022-07-01 | 2022-10-11 | 浙江大鑫检测科技有限公司 | On-site CBR value tester |
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| CN105544624A (en) * | 2016-02-23 | 2016-05-04 | 周霜林 | Static load test device for asymmetric counter weight |
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