Road and bridge construction concrete detection equipment

Abstract

The invention relates to the technical field of concrete detection, and discloses road and bridge construction concrete detection equipment, which is used for detecting a concrete test block, and is characterized in that a longitudinal through strip-shaped hole is formed in a bearing table; the pressure mechanism is arranged right above the bearing table; the sample seat is arranged on the bearing table; the striking piece is arranged below the bearing table, and the striking piece penetrates through the strip-shaped hole to abut against the bottom surface of the sample seat; the clamping piece is provided with two clamping plates, the two clamping plates are used for clamping the concrete test block, and the two clamping plates are fixedly connected with the sample seat; the reciprocating driving part is connected with the sample seat and is used for providing horizontal reciprocating motion force for the sample seat, so that the two clamping plates generate lateral force on the concrete test block; the road bridge construction concrete detection equipment can carry out high-frequency vibration and lateral force detection on the basis of carrying out load detection on the concrete test block, the equipment detection condition is closer to the real working condition of road bridge concrete, and the data reliability of the detection equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete detection, and in particular to a concrete detection device for road and bridge construction. Background Art

[0002] Concrete is very important in road and bridge structures. The performance of concrete itself directly determines the safety, stability and long-term performance of roads and bridges. Therefore, it is necessary to select concrete test blocks for testing during road and bridge construction.

[0003] In order to make the testing conditions close to the working conditions of road and bridge concrete, some concrete testing equipment capable of multi-directional pressurization has appeared in the prior art. This concrete testing equipment is equipped with multiple hydraulic cylinders, which can realize bidirectional equal and bidirectional unequal pressurization operations on concrete test blocks during the testing process. Although this testing equipment can generate loads close to the working conditions on the concrete test blocks, in fact, road and bridge concrete, while bearing the loads brought by its own structure and vehicles, also needs to withstand the resonance generated by vehicle driving and the lateral force brought by wind loads. However, due to the limited extension and retraction speed of the hydraulic cylinders of the above-mentioned testing equipment, it is impossible to directly provide vibration force and lateral force to the concrete test blocks, so that the testing conditions of the above-mentioned testing equipment are still different from the actual working conditions of road and bridge concrete, which in turn affects the reliability of the test data. Summary of the Invention

[0004] The present invention proposes a concrete testing equipment for road and bridge construction to address the deficiencies in the above-mentioned prior art. The concrete testing equipment for road and bridge construction can perform vibration and lateral force detection on the basis of load detection of concrete test blocks. The equipment detection conditions are closer to the actual working conditions of road and bridge concrete, thereby improving the reliability of the detection equipment data.

[0005] The technical solution of the present invention is: a road and bridge construction concrete testing device for testing concrete test blocks, including a pressure mechanism and further comprising:

[0006] The bearing platform is provided with a longitudinally penetrating strip hole; the pressure mechanism is arranged just above the bearing platform;

[0007] The sample seat is arranged on the bearing platform, and the sample seat is used to place the concrete test block;

[0008] The vibrating member is arranged below the supporting platform, passes through the strip-shaped hole and contacts the bottom surface of the sample holder, and is used to provide a vibration force to the sample holder;

[0009] The clamping member has two clamping plates, which are used to clamp the concrete test block, and the two clamping plates are fixedly connected to the sample seat;

[0010] The reciprocating drive is connected to the sample seat and is used to provide a horizontal reciprocating force to the sample seat, so that when the concrete test block is under the action of the pressure mechanism, the two clamping plates generate a lateral force on the concrete test block.

[0011] In at least one embodiment of the present invention, the vibration rod includes: a rod body and a sleeve, the rod body is fixed to the bottom of the sample holder, the sleeve is sleeved on the bottom end of the rod body, a first spring abutting against the rod body is provided in the sleeve, and the bottom of the sleeve is rotatably connected to a roller abutting against a cam.

[0012] In at least one embodiment of the present invention, a mounting plate is horizontally provided below the supporting platform, a driving rod is provided at the bottom of the sample holder, and the reciprocating driving member includes:

[0013] The turntable is horizontally rotatably connected to the mounting plate, the rotating shaft of the turntable passes through the mounting plate, a one-way bearing is provided on the rotating shaft at the bottom end of the mounting plate, a first bevel gear is mounted on the one-way bearing, and a second bevel gear meshing with the first bevel gear is provided on the rotating shaft;

[0014] One end of the connecting rod is connected to the driving rod through a second spring, and the other end is eccentrically connected to the turntable through a hinge rod.

[0015] In at least one embodiment of the present invention, the pressure mechanism includes a cylinder and a pressure plate provided on a movable rod of the cylinder, a pressure block is provided at the middle position of the bottom of the pressure plate, and the clamping member includes:

[0016] The two longitudinal plates are both arranged on the bearing platform, and the two longitudinal plates are arranged opposite to each other on both sides of the sample seat;

[0017] Two push rods are horizontally arranged on the two longitudinal plates respectively, and the two push rods are each provided with a first elastic member, and the first elastic member is used to provide resistance to the movement of the two push rods toward one of the opposite sides; the two clamping plates are respectively longitudinally arranged at opposite ends of the two push rods;

[0018] The two abutting blocks are both longitudinally arranged on both sides of the pressing block on the pressing plate, and the two abutting blocks are both provided with an inclined surface abutting against the end of the push rod.

[0019] In at least one embodiment of the present invention, a first rack is provided on the top of the sample holder, a second rack matching the first rack is provided on the bottom of the two clamping plates, a first mounting groove is provided horizontally through the two longitudinal plates, a first mounting block is provided in the first mounting groove, a second elastic member is provided on the first mounting block in the first mounting groove, the push rod is provided on the first mounting block, the second mounting groove is provided horizontally through the two abutment blocks, a second mounting block is provided in the second mounting groove, a third elastic member is provided on the second mounting block in the second mounting groove, a pressure rod is provided on the second mounting block, and both push rods are spring rods.

[0020] In at least one embodiment of the present invention, a plurality of plug-in holes are provided on the turntable along the radial direction, the end of the hinged rod is inserted into one of the plug-in holes, a horizontal through hole is provided on the driving rod, the connecting rod is a threaded rod, the connecting rod passes through the through hole, a first adjusting bolt is threadedly connected to the connecting rod, and the second spring is sleeved between the first adjusting bolt and the driving rod on the connecting rod.

[0021] In at least one embodiment of the present invention, the vibration component includes: two vibration rods and a rotating shaft, the two vibration rods are both abutted against the bottom end of the sample holder, the two vibration rods are both located in the strip hole, the rotating shaft is horizontally connected to the bottom of the support platform, and the rotating shaft is provided with a cam connected to the two vibration rods.

[0022] In at least one embodiment of the present invention, two longitudinal strip openings are relatively provided on the outer wall of the sleeve, a thread is provided on the outer wall of the sleeve, a support block is provided inside the sleeve, and two support strips extending out of the strip openings are provided on the support block, the first spring is arranged between the support block and the rod body inside the sleeve, and a second adjusting bolt is threadedly connected to the lower part of the support strip outside the sleeve.

[0023] In at least one embodiment of the present invention, the top of the supporting platform is provided with a strip-shaped hole with slide grooves on both sides, and the bottom of the test seat is provided with two groups of rollers, and the two groups of rollers are respectively arranged in two slide grooves.

[0024] In at least one embodiment of the present invention, a mounting shell is provided at the bottom of the supporting platform, the rotating shaft is horizontally rotatably connected to the mounting shell, two columns are provided on the supporting platform, a supporting plate is provided at the top of the columns, the cylinder body is arranged on the supporting plate, and the telescopic rod of the cylinder body passes through the supporting plate.

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

[0026] 1. The present invention comprises a bearing platform, a sample seat arranged on the bearing platform, a vibrating member consisting of two vibrating rods and a rotating shaft, a clamping member for clamping a concrete test block and fixedly connected to the sample seat, and under the action of a reciprocating driving member, when the device is in use, the concrete test block is clamped and fixed by two clamping plates. When the concrete is subjected to a load performance test, the pressure test can be directly applied to the concrete sample through the pressure mechanism. When a high-frequency vibration test is required for the concrete test block under load, the rotating shaft is driven to rotate so that the rotating shaft intermittently drives the vibrating rod to move upward through the cam, and then the vibrating rod is driven to rotate. The specimen seat is pushed to generate high-frequency vibration on the concrete specimen. When the concrete specimen needs to be tested for lateral force resistance, the specimen seat is driven to reciprocate by the reciprocating drive member. At this time, since the two clamping plates are connected to the specimen seat as a whole, the clamping plates will move with the horizontal movement of the specimen seat during the horizontal movement of the specimen seat. At the same time, under the action of the pressure mechanism, the clamping plates will generate lateral thrust on the concrete specimen to realize the test of superimposed lateral force. Compared with the existing technology, the test conditions of this detection equipment are closer to the real working environment of bridge concrete, thereby improving the reliability of the detection equipment data.

[0027] 2. The present invention provides a driving rod passing through a strip hole at the bottom of the supporting platform, and provides a turntable connected to the rotating shaft through a one-way bearing and a gear mechanism, and a hinged rod provided on the driving rod and eccentrically connected to the turntable through a hinged rod. When the rotating shaft rotates forward, the one-way bearing rotates, and the rotating shaft only drives the cam to rotate, so as to perform a high-frequency vibration test on the concrete test block. On this basis, when it is necessary to perform a lateral force test on the concrete test block, the driving shaft is reversed. During the reversal of the rotating shaft, the one-way bearing is self-locking. While driving the cam to rotate, the rotating shaft drives the turntable to rotate through the engagement of the first bevel gear and the second bevel gear, so that the turntable intermittently pulls the driving rod and the sample seat to move horizontally through the hinged rod and the connecting rod, and then generates lateral force on the concrete test block with the cooperation of the clamping plate. The switching of each detection mode of the equipment is simple and fast, and different modes of superposition tests can be performed step by step according to the actual performance of the concrete, thereby meeting the diverse testing requirements for the concrete test block and improving the reliability of the detection equipment data.

[0028] 3. The present invention comprises a clamping member composed of two longitudinal plates, two push rods for installing the clamping plates, and two abutment blocks installed on the pressure plate and having inclined surfaces; at the same time, the present invention provides a first rack at the bottom of the mounting plate and a second rack at the top of the sample seat, sets the push rod to a longitudinally movable state, and provides a longitudinally movable pressure rod on the abutment block; so that when the cylinder drives the pressure plate to move downward, the entire clamping member pushes the push rod to move through the two abutment blocks, so that the push rod pushes the clamping plate to quickly position and clamp the concrete test block, and the action of the pressure rod pressing the clamping plate causes the first rack and the second rack to mesh, completing the fixed connection between the clamping plate and the sample seat; during the detection process of the concrete testing equipment, the adjustment, positioning and fixation of the concrete test block can be automatically completed, ensuring that the concrete test block accurately reaches the detection position, thereby improving the reliability of the detection equipment data.

[0029] 4. The present invention sets a plurality of plug holes for connecting the hinged rod on the turntable, sets the connecting rod as a threaded rod slidably connected to the driving rod, and configures a first adjusting bolt and a second spring. By setting a vibration rod composed of a rod body and a sleeve, and configuring a second adjusting bolt for adjusting the preload force of the first spring in the sleeve, the device can adjust the position of the hinged rod in the plurality of plug holes and the preload force of the second elastic member during the detection process, thereby adjusting the high-frequency vibration intensity and the lateral force intensity, so that the device can adjust different test conditions according to the applicable position of the concrete to meet the various test requirements for the concrete test blocks; at the same time, the first spring and the second spring can provide a certain buffer when the device applies high-frequency vibration and lateral force, avoiding rigid impact between components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention in the main view of the working state;

[0033] Figure 4 For the present invention Figure 3 Schematic diagram of local structure;

[0034] Figure 5 For the present invention Figure 4 Middle A shows the detailed structure diagram;

[0035] Figure 6 For the present invention Figure 4 Schematic diagram of local structure;

[0036] Figure 7 For the present invention Figure 6 Schematic diagram of the detailed structure at point B in the middle.

[0037] Description of reference numerals:

[0038] 1. Pressure mechanism; 11. Cylinder; 12. Pressing plate; 2. Carrying platform; 21. Strip hole; 3. Sample holder; 31. Driving rod; 32. First rack; 4. Vibrating member; 41. Vibrating rod; 411. Rod body; 412. Sleeve; 413. Support block; 414. Second adjusting bolt; 42. Rotating shaft; 421. Cam; 422. Second bevel gear; 43. Mounting plate; 5. Reciprocating drive member; 51. Turntable; 511 , one-way bearing; 512, first bevel gear; 513, plug-in hole; 52, connecting rod; 521, first adjusting bolt; 6, rotating member; 7, clamping member; 71, longitudinal plate; 711, first mounting groove; 712, second mounting block; 72, push rod; 73, clamping plate; 731, second rack; 74, abutment block; 741, second mounting groove; 742, second mounting block; 75, pressure rod; 8, mounting shell; 9, carrier plate. DETAILED DESCRIPTION

[0039] The drawings in the present invention are not drawn strictly to scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic structural diagrams.

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "up", "down", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0042] Combine Figures 1 to 7As shown, a road and bridge construction concrete testing device is used for testing concrete test blocks, including a pressure mechanism 1 and further comprising:

[0043] The bearing platform 2 is provided with a longitudinally penetrating strip hole 21; the pressure mechanism 1 is arranged directly above the bearing platform 2, and the pressure mechanism 1 is used to provide longitudinal pressure to the concrete test block;

[0044] The sample seat 3 is arranged on the bearing platform 2, and the sample seat 3 is used to place the concrete test block;

[0045] The vibrating member 4 includes two vibrating rods 41 and a rotating shaft 42. The two vibrating rods 41 are both in contact with the bottom end of the sample holder 3. The two vibrating rods 41 are both located in the strip-shaped hole 21. The rotating shaft 42 is horizontally connected to the bottom of the supporting platform 2. A cam 421 connected to the two vibrating rods 41 is provided on the rotating shaft 42. The protrusions of the two cams 421 are in the same position, and can drive the two vibrating rods 41 to move up and down together during the rotation of the cam 421.

[0046] The clamping member 7 has two clamping plates 73, which are used to clamp the concrete test block. The two clamping plates 73 are fixedly connected to the sample holder 3 so that the two clamping plates 73 and the sample holder 3 form an integral whole. The height of the two clamping plates 73 is lower than the height of the concrete test block.

[0047] The reciprocating drive member 5 is connected to the sample holder 3 and is used to drive the sample holder 3 to reciprocate horizontally, so that the clamping plate 73 generates a lateral force on the concrete test block under the action of the reciprocating drive member 5;

[0048] The rotating member 6 is connected to the rotating shaft 42 and is used to drive the rotating shaft 42 to rotate. Specifically, the rotating member 6 is a driving motor, which is arranged below the rotating shaft 42 and is connected to the rotating shaft 42 through a sprocket mechanism.

[0049] As an alternative embodiment, a mounting plate 43 is horizontally provided below the carrier platform 2, a driving rod 31 is provided at the bottom of the sample holder 3, and the driving rod 31 is vertically arranged at the bottom of the carrier platform 2. The reciprocating driving member 5 includes: a turntable 51 and a connecting rod 52. The turntable 51 is horizontally rotated and connected to the mounting plate 43. The rotating shaft of the turntable 51 passes through the mounting plate 43. A one-way bearing 511 is provided on the rotating shaft at the bottom end of the mounting plate 43. A first bevel gear 512 is mounted on the one-way bearing 511, and a second bevel gear 422 meshing with the first bevel gear 512 is provided on the rotating shaft 42; one end of the connecting rod 52 is connected to the driving rod 31, and the other end of the connecting rod 52 is eccentrically connected to the turntable 51 through a hinged rod; specifically, when the rotating shaft 42 rotates forward under the drive of the rotating member 6, the one-way bearing 511 rotates, and when the one-way shaft 42 is reversed, the one-way bearing 511 rotates. The bearing 511 is self-locking, and the one-way bearing 511 can also be replaced by a ratchet mechanism, and its working principle remains unchanged; in actual operation, when there is no need to apply lateral force to the concrete test block, the driving shaft 42 is rotated forward, and when lateral force needs to be added, the driving shaft 42 is reversed. At this time, the one-way bearing 511 is self-locking, and the shaft 42 drives the cam 421 to rotate while driving the turntable 51 to rotate through the engagement of the first bevel gear 512 and the second bevel gear 422, so that the turntable 51 intermittently pulls the driving rod 31 and the sample seat 3 to move horizontally through the hinge rod and the connecting rod 52, and then generates lateral force on the concrete test block with the cooperation of the clamping plate 73. During the detection process, switching between modes is simple and fast. It only needs to control the forward and reverse rotation of the shaft 42. The tests of various forces acting on the concrete can be superimposed in sequence.

[0050] As an alternative embodiment, the pressure mechanism 1 includes a pressure plate 12 longitudinally arranged on the cylinder 11 and arranged on the movable rod of the cylinder 11. A pressure block is provided at the middle position of the bottom of the pressure plate 12. The clamping member 7 includes: two longitudinal plates 71, two push rods 72 and two abutment blocks 74. The two longitudinal plates 71 are both arranged on the supporting platform 2, and the two longitudinal plates 71 are relatively arranged on both sides of the sample holder 3; the two push rods 72 are respectively horizontally passed through the two longitudinal plates 71, and the two push rods 72 are provided with a first elastic member, which is used to give the two push rods 72 Provide resistance towards the movement of one relative to the other; the two clamping plates 73 are respectively longitudinally arranged at the opposite ends of the two push rods 72; the two abutment blocks 74 are longitudinally provided on both sides of the pressure block on the pressure plate 12, and the two abutment blocks 74 are provided with an inclined surface that abuts against the end of the push rod 72; this form of clamping member 7 can push the clamping plate 73 through the abutment block 74 to adjust the position and clamp the concrete test block during the downward movement of the cylinder body 11 with the pressure plate 12, without the need for the tester to manually position and clamp the concrete test block, thereby improving the detection speed.

[0051] As an alternative embodiment, the top of the sample holder 3 is provided with a first rack 32, the bottoms of the two clamping plates 73 are provided with second racks 731 that match the first rack 32, the two longitudinal plates 71 are provided with a first mounting groove 711 that runs horizontally through, a first mounting block 712 is provided in the first mounting groove 711, a second elastic member is provided on the first mounting block 712 in the first mounting groove 711, and the second elastic member is used to provide a buffer for the up and down movement of the first mounting block 712, the push rod 72 is passed through the first mounting block 712, and the two abutment blocks 74 are both horizontally passed through the second mounting groove 741, the second mounting A second mounting block 742 is provided in the mounting groove 741, and a third elastic member is provided on the second mounting block 742 in the second mounting groove 741. The third elastic member is used to provide a buffer for the up and down movement of the second mounting block 742, and a pressure rod 75 is passed through the second mounting block 742; due to the action of the pressure rod 75 pressing the clamping plate 73, the first rack 32 and the second rack 731 are engaged, completing the fixed connection between the clamping plate 73 and the specimen holder 3, and eliminating the need for the tester to manually clamp and fix the concrete sample or make too many adjustments, thereby ensuring that the concrete test block accurately reaches the detection position and improving the reliability of the detection equipment data.

[0052] As an alternative embodiment, the vibration rod 41 includes: a rod body 411 and a sleeve 412, the rod body 411 is fixed to the bottom of the sample holder 3, the sleeve 412 is sleeved on the bottom end of the rod body 411, a first spring is provided in the sleeve 412 and is in contact with the rod body 411, and the bottom of the sleeve 412 is rotatably connected to a roller in contact with the cam 421; the first spring can provide a certain buffer for the movement of the rod body 411 in the process of the device providing high-frequency vibration, thereby avoiding direct rigid impact between the various components of the device.

[0053] As an alternative embodiment, a plurality of plug holes 513 are provided on the turntable 51 along the radial direction, and the end of the hinged rod is plugged into one of the plug holes 513. A horizontal through hole is provided on the driving rod 31. The connecting rod 52 is a threaded rod. The connecting rod 52 passes through the through hole. A first adjusting bolt 521 is threadedly connected to the connecting rod 52. A second spring is installed between the first adjusting bolt 521 and the driving rod 31. By selectively inserting different hinged rods into different plug holes 513, the horizontal displacement of the sample holder 3 driven by the turntable 51 can be adjusted. The setting of the second spring can provide a certain buffer for the horizontal displacement of the sample holder 3, thereby meeting the diverse testing requirements for concrete test blocks.

[0054] As an alternative embodiment, two longitudinal strip openings are relatively provided on the outer wall of the sleeve 412, and a thread is provided on the outer wall of the sleeve 412. A support block 413 is provided inside the sleeve 412, and two support strips extending out of the strip openings are provided on the support block 413. The first spring is arranged between the support block 413 and the rod body 411 inside the sleeve 412, and a second adjusting bolt 414 is threadedly connected below the outer support strip of the sleeve 412. The second adjusting bolt 414 is used to adjust the preload force of the first spring, thereby realizing the adjustment of the high-frequency vibration force. Different test conditions can be adjusted according to the applicable position of the concrete to meet the diverse testing requirements for concrete test blocks.

[0055] As an alternative embodiment, the top of the supporting platform 2 is provided with a strip hole 21 and slide grooves on both sides, and the bottom of the sample holder 3 is provided with two sets of rollers, and the two sets of rollers are respectively arranged in the two slide grooves; the setting of the two sets of rollers and the two slide grooves can make the sample holder 3 smoother when performing horizontal movement, avoiding excessive friction between the sample holder 3 and the supporting platform 2, which causes movement obstruction and affects the normal lateral force test of the device.

[0056] As an alternative embodiment, a mounting shell 8 is provided at the bottom of the supporting platform 2, and the rotating shaft 42 is horizontally rotatably connected to the mounting shell 8. The mounting shell 8 is the shell of the device. Two columns are provided on the supporting platform 2, and a carrying plate 9 is provided at the top of the column. The cylinder body 11 is arranged on the carrying plate 9, and the telescopic rod of the cylinder body 11 passes through the carrying plate 9. The end of the telescopic rod of the cylinder body 11 is connected to the pressure plate 12.

[0057] The working principle and usage of this embodiment:

[0058] The present invention provides a road and bridge construction concrete testing equipment. When the road and bridge construction concrete testing equipment is in use, the concrete test block is placed on the sample seat 3, and then the cylinder 11 of the pressure mechanism 1 is started to drive the pressure plate 12 to move downward. During the downward movement of the pressure plate 12, the two abutment blocks 74 provided on the pressure plate 12 first contact with the push rod 72, and due to the effect of the inclined surface provided on the abutment blocks 74, the two abutment blocks 74 push the two push rods 72 to move toward the opposite side, thereby causing the two push rods 72 to drive the clamping plate 73 to clamp the concrete test block. Then, as the cylinder 11 drives the pressure plate 12 to continue to move, the two abutment blocks 74 push the two push rods 72 to move toward the opposite side, thereby causing the two push rods 72 to drive the clamping plate 73 to clamp the concrete test block. When the clamping plate 73 is pressed downward, the pressure rod 75 provided on the abutment block 74 contacts the clamping plate 73, thereby providing downward pressure on the clamping plate 73, so that the second rack 731 under the two clamping plates 73 engages with the first rack 32 provided on the sample holder 3, thereby connecting the clamping plate 73 and the sample holder 3 into one. At this time, the pressure block abuts against the top of the concrete test block. At this time, the driving cylinder 11 drives the pressure plate 12 to move downward continuously, and the concrete test block can be pressure tested. The second elastic member and the third elastic member in the first mounting groove 711 and the second mounting groove 741 can provide a certain movement margin for the concrete test block pressure test.

[0059] Subsequently, when a high-frequency vibration test is required for the concrete specimen, the rotating part 6 is started to rotate forward, and the rotating part 6 drives the rotating shaft 42 to rotate through the sprocket mechanism. At this time, the one-way bearing 511 rotates, and the turntable 51 does not rotate. The rotating shaft 42 only drives the cam 421 to take the initiative, and then the cam 421 pushes the vibration rod 41 to move upward intermittently, so that the vibration rod 41 pushes the sample seat 3 to vibrate intermittently. The high-frequency vibration of the sample seat 3 cooperates with the pressure block to realize the vibration test of the sample block.

[0060] When it is necessary to perform a superimposed lateral stress test on the concrete test block under the action of high-frequency vibration, the rotating member 6 is started to reverse. At this time, the one-way bearing 511 is self-locked, and the rotating shaft 42 drives the cam 421 to rotate while driving the turntable 51 to rotate through the engagement of the first bevel gear 512 and the second bevel gear 422. The turntable 51 intermittently pulls the driving rod 31 through the hinged rod to perform horizontal movement, so that the driving rod 31 intermittently pulls the sample holder 3 to perform horizontal movement. At this time, since the two clamping plates 73 are connected to the sample holder 3 as a whole, the clamping plates 73 will move with the horizontal movement of the sample holder 3 during the horizontal movement of the sample holder 3. At the same time, under the action of the pressure of the pressing block, the clamping plates 73 will generate thrust on the side of the concrete test block to perform the test of superimposed lateral force.

[0061] The above embodiments are only specific implementation methods of the patent of the present invention, which are used to illustrate the technical solutions of the patent of the present invention rather than to limit it. The protection scope of the patent of the present invention is not limited thereto. Although the patent of the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions implemented by the patent of the present invention, and should all be covered by the protection scope of the present invention.

Claims

1. A concrete testing device for road and bridge construction, used for testing concrete test blocks, comprising a pressure mechanism, characterized in that: Also includes: The bearing platform is provided with a longitudinal strip hole; the pressure mechanism is arranged directly above the bearing platform, and the pressure mechanism is used to provide longitudinal pressure to the concrete test block; A specimen seat, provided on the bearing platform, for placing a concrete test block; A vibrating member is provided below the supporting platform, passes through the strip-shaped hole and contacts the bottom surface of the sample holder, and is used to provide a vibration force to the sample holder; The clamping member has two clamping plates, the two clamping plates are used to clamp the concrete test block, and the two clamping plates are fixedly connected to the sample holder; The reciprocating driving member is connected to the sample seat and is used to provide a horizontal reciprocating force to the sample seat, so that when the concrete test block is under the action of the pressure mechanism, the two clamping plates generate a lateral force on the concrete test block.

2. A road and bridge construction concrete testing device as claimed in claim 1, characterized in that: The vibrating component includes: two vibrating rods and a rotating shaft. The two vibrating rods are both in contact with the bottom end of the sample seat. The two vibrating rods are both located in the strip hole. The rotating shaft is horizontally connected to the bottom of the supporting platform. The rotating shaft is provided with a cam connected to the two vibrating rods.

3. A road and bridge construction concrete testing device as claimed in claim 2, characterized in that: A mounting plate is horizontally provided below the bearing platform, a driving rod is provided at the bottom of the sample holder, and the reciprocating driving member includes: A turntable is horizontally rotatably connected to the mounting plate, wherein the rotating shaft of the turntable passes through the mounting plate, a one-way bearing is provided on the rotating shaft at the bottom end of the mounting plate, a first bevel gear is mounted on the one-way bearing, and a second bevel gear meshing with the first bevel gear is provided on the rotating shaft; One end of the connecting rod is connected to the driving rod through the second spring, and the other end is eccentrically connected to the turntable through the hinge rod.

4. A road and bridge construction concrete testing device as claimed in claim 1, characterized in that: The pressure mechanism includes a cylinder and a pressure plate arranged on a movable rod of the cylinder, a pressure block is provided at the middle position of the bottom of the pressure plate, and the clamping member includes: Two longitudinal plates are both arranged on the bearing platform, and the two longitudinal plates are arranged opposite to each other on both sides of the sample seat; Two push rods are horizontally arranged on the two longitudinal plates respectively. The two push rods are each provided with a first elastic member, and the first elastic member is used to provide resistance to the movement of the two push rods toward one of the opposite sides. The two clamping plates are respectively longitudinally arranged at opposite ends of the two push rods. The two abutting blocks are both longitudinally arranged on both sides of the pressing block on the pressing plate, and the two abutting blocks are both provided with an inclined surface abutting against the end of the push rod.

5. A road and bridge construction concrete testing device as claimed in claim 4, characterized in that: A first rack is provided on the top of the sample holder, and a second rack matching the first rack is provided at the bottom of the two clamping plates. A first mounting groove is provided on the two longitudinal plates and runs horizontally therethrough. A first mounting block is provided in the first mounting groove, and a second elastic member is provided on the first mounting block in the first mounting groove. The push rod is provided on the first mounting block, and a second mounting groove is provided horizontally therethrough for the two abutment blocks. A second mounting block is provided in the second mounting groove, and a third elastic member is provided on the second mounting block in the second mounting groove. A pressure rod is provided on the second mounting block, and both push rods are spring rods.

6. A road and bridge construction concrete testing device as claimed in claim 3, characterized in that: The turntable is provided with a plurality of plug-in holes along the radial direction, the end of the hinged rod is plugged into one of the plug-in holes, the driving rod is provided with a horizontal through hole, the connecting rod is a threaded rod, the connecting rod passes through the through hole, a first adjusting bolt is threadedly connected to the connecting rod, and the second spring is sleeved between the first adjusting bolt and the driving rod on the connecting rod.

7. A road and bridge construction concrete testing device as claimed in claim 2, characterized in that: The vibrating rod includes: a rod body and a sleeve, the rod body is fixed to the bottom of the sample holder, the sleeve is sleeved on the bottom end of the rod body, a first spring abutting against the rod body is provided in the sleeve, and the bottom of the sleeve is rotatably connected to a roller abutting against a cam.

8. A road and bridge construction concrete testing device as claimed in claim 7, characterized in that: Two longitudinal strip openings are relatively provided on the outer wall of the sleeve, a thread is provided on the outer wall of the sleeve, a support block is provided inside the sleeve, and two support strips extending out of the strip openings are provided on the support block. The first spring is arranged between the support block and the rod body inside the sleeve, and a second adjusting bolt is threadedly connected to the lower side of the support strip outside the sleeve.

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