CN113075034B - Tensile strength detection experimental device for prefabricated concrete bridge pier - Google Patents
Tensile strength detection experimental device for prefabricated concrete bridge pier Download PDFInfo
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- CN113075034B CN113075034B CN202110271849.2A CN202110271849A CN113075034B CN 113075034 B CN113075034 B CN 113075034B CN 202110271849 A CN202110271849 A CN 202110271849A CN 113075034 B CN113075034 B CN 113075034B
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- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 239000011178 precast concrete Substances 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 13
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 241000252254 Catostomidae Species 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an assembled precast concrete pier tensile strength detection experimental device which comprises a movable plate, wherein a vertical plate is arranged on the movable plate, a plurality of electromagnetic blocks are arranged in the vertical plate, and a plurality of tensile assemblies are arranged on the movable plate; the tensile component comprises a first elastic spring arranged on the front side of the movable plate, a first multi-section telescopic push rod is sleeved on the outer side of the first elastic spring, a second elastic spring is arranged on the rear side of the movable plate, a second multi-section telescopic push rod is sleeved on the outer side of the second elastic spring, the telescopic ends of the first multi-section telescopic push rod and the second multi-section telescopic push rod are connected with impact iron blocks, an electromagnetic block is arranged between the first multi-section telescopic push rod and the second multi-section telescopic push rod, sucking discs are arranged on one side, opposite to the impact iron blocks, of each impact iron block, and a first clamping piece and a second clamping piece are respectively arranged at the upper end and the lower end of each impact iron block. The invention is convenient for carrying out tensile strength experiment on the prefabricated concrete bridge pier.
Description
Technical Field
The invention relates to the technical field of prefabricated concrete piers, in particular to an experimental device for detecting tensile strength of an assembled prefabricated concrete pier.
Background
The prefabricated concrete structure is compared with the existing common cast-in-place concrete structure, and the corresponding traditional cast-in-place concrete needs site molding, site casting and site maintenance. Briefly, concrete elements including beams, plates, columns, walls and the like are prefabricated in factories, then transported to the site for hoisting and splicing, and finally the building of a building is completed just like building blocks.
The bridge pier is an intermediate supporting structure of a multi-span bridge, the construction cost and the construction period can be effectively saved based on the bridge pier design concept of the assembly technology, and the problems of urban air pollution, noise pollution, congestion and the like caused by construction are reduced.
The existing strength experimental device for the prefabricated concrete bridge pier is mostly characterized in that the device and the prefabricated concrete are fixed by manpower, and the prefabricated concrete is sampled by fixing the device by a plurality of people, so that the experiment is slow and consumes a large amount of manpower, and the experiment speed is greatly reduced; in addition, the existing tensile strength test device generally performs a tensile strength test on one bridge pier, and there is no way to perform a tensile strength test on two bridge piers at the same time.
Disclosure of Invention
In view of the above, the present invention is directed to an assembled precast concrete pier tensile strength detection experimental apparatus, which is designed to solve all or one of the problems in the prior art.
Based on the above object, the invention provides an assembled precast concrete pier tensile strength detection experimental device, which comprises a movable plate, wherein a vertical plate is arranged on the movable plate, a cavity is arranged in the vertical plate, a plurality of electromagnetic blocks are arranged in the cavity at equal intervals, one end of each electromagnetic block is sequentially connected with a power supply through a resistor, the other end of the power supply is communicated with an electric connecting plate, one side of each electromagnetic block is provided with one electric connecting plate which is correspondingly arranged, all the electric connecting plates are connected to a sliding plate, the sliding plate is connected with a left-right moving component, the left-right moving component is used for controlling the sliding plate to slide left and right so that the electric connecting plate is contacted with or not contacted with the electromagnetic blocks, and a plurality of tensile components are arranged on the movable plate; the tensile assembly comprises a first elastic spring arranged on the front side of the moving plate, a first multi-section telescopic push rod is sleeved on the outer side of the first elastic spring, a second elastic spring is arranged on the rear side of the moving plate, a second multi-section telescopic push rod is sleeved on the outer side of the second elastic spring, the telescopic ends of the first multi-section telescopic push rod and the second multi-section telescopic push rod are connected with iron blocks, the first multi-section telescopic push rod and the second multi-section telescopic push rod are arranged in parallel, an electromagnetic block is arranged between the first multi-section telescopic push rod and the second multi-section telescopic push rod, suckers are arranged on one sides of the two iron blocks which are oppositely arranged, and a first clamping piece and a second clamping piece are respectively arranged at the upper end and the lower end of the iron blocks.
Optionally, the terminal surface four corners department all is provided with first support column under the movable plate, first support column lower extreme is connected with the gyro wheel, gyro wheel one side is provided with the brake.
Optionally, the terminal surface still is provided with lifting unit under the movable plate, lifting unit is connected with first backup pad, lifting unit is used for controlling first backup pad goes up and down.
Optionally, the lifting assembly includes a first electric telescopic push rod connected with the lower end surface of the moving plate, and the lower end of the first electric telescopic push rod is connected with the first supporting plate.
Optionally, the lifting assembly includes with terminal surface connection's first motor under the movable plate, the output of first motor is connected with first threaded rod, first threaded rod outside cover is equipped with the thread bush, first threaded rod one side be provided with first threaded rod parallel arrangement's first guide arm, slide on the first guide arm have with thread bush fixed connection's first slip cap piece, the thread bush with first backup pad is connected.
Optionally, a second support plate parallel to the first support plate is arranged below the first support plate, and the second support plate is connected with the first support plate through a plurality of third elastic springs.
Optionally, the left-right moving assembly comprises a second electric telescopic push rod, and a telescopic end of the second electric telescopic push rod is connected with the sliding plate.
Optionally, a first sliding groove is arranged in the cavity, and a first sliding block connected with the sliding plate is slidably arranged in the first sliding groove.
Optionally, a first sliding rod is arranged in the cavity, and a second sliding block connected with the sliding plate is arranged on the first sliding rod in a sliding manner.
According to the experimental device for detecting the tensile strength of the prefabricated concrete bridge pier, when the tensile strength of the prefabricated concrete bridge pier is required to be tested, the movable plate is moved to the position between the two prefabricated concrete bridge piers, the two prefabricated concrete bridge piers are respectively located at the front side and the rear side of the device, the tensile strength test operation on the two bridge piers is convenient, then the sliding plate is controlled by the left-right moving component to move so that the electromagnetic block is electrified, at the moment, the iron blocks are impacted to compress the first elastic spring and the second elastic spring under the attraction of the electromagnetic block, when the electromagnetic block is not electrified, the iron blocks are impacted to the prefabricated concrete bridge pier under the action of the first elastic spring and the second elastic spring, the iron blocks which are respectively connected with the prefabricated concrete bridge pier are pulled in opposite directions when the iron blocks are impacted, the iron blocks which are respectively connected with the first elastic spring and the second elastic spring are impacted are convenient for simultaneously carrying out the tensile strength test on the two prefabricated concrete bridge piers, and the experimental efficiency of the prefabricated concrete bridge pier is convenient to be improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a schematic top view of an embodiment of the present invention.
In the figure: the device comprises a moving plate 1, a vertical plate 2, rollers 3, a first support column 4, a lifting assembly 6, a first motor 7, a first threaded rod 8, a threaded sleeve 9, a first guide rod 10, a first sliding sleeve block 11, a first support plate 12, a first elastic spring 13, a first multi-section telescopic push rod 14, a striking iron block 15, an electromagnetic block 16, a cavity 17, a sliding plate 18, an electric connection plate 19, a second multi-section telescopic push rod 20, a second elastic spring 21 and a second electric telescopic push rod 22.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present disclosure pertains. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The utility model provides an assembled precast concrete pier tensile strength detects experimental apparatus, includes movable plate 1, be provided with vertical board 2 on the movable plate 1, be provided with cavity 17 in the vertical board 2, equidistant a plurality of electromagnetism pieces 16 that are provided with in the cavity 17, every electromagnetism piece 16 one end is connected with the power through the resistance in proper order, the power other end communicates with the electric connecting plate, every electromagnetism piece 16 one side all is provided with one rather than the electric connecting plate that corresponds the setting, all the electric connecting plate all is connected on sliding plate 18, sliding plate 18 is connected with about the movable assembly, about the movable assembly is used for controlling sliding plate 18 about sliding so that the electric connecting plate with electromagnetism piece 16 contact or contactless, be provided with a plurality of tension modules on the movable plate 1; the tensile assembly comprises a first elastic spring 13 arranged on the front side of a movable plate 1, a first plurality of sections of telescopic push rods 14 are sleeved on the outer side of the first elastic spring 13, a second elastic spring 21 is arranged on the rear side of the movable plate 1, a second plurality of sections of telescopic push rods 20 are sleeved on the outer side of the second elastic spring 21, the first plurality of sections of telescopic push rods 14 and the telescopic ends of the second plurality of sections of telescopic push rods 20 are connected with an iron beating block 15, the first plurality of sections of telescopic push rods 14 and the second plurality of sections of telescopic push rods 20 are arranged in parallel, an electromagnetic block 16 is arranged between the first plurality of sections of telescopic push rods 14 and the second plurality of sections of telescopic push rods 20, two sides of the impact iron blocks 15 are provided with suckers, the upper end and the lower end of the impact iron block 15 are respectively provided with a first clamping piece and a second clamping piece, when an assembly type precast concrete pier is required to carry out tensile strength experiment, the movable plate 1 is moved between two assembly type precast concrete piers, then the left and right moving assembly control sliding assembly is carried out to control the sliding plate 18 so that the electromagnetic block 16 is enabled to be connected with the second precast concrete pier 15 through the electromagnetic block 16 in a compression spring 13, and the electromagnetic block 16 is connected with the electromagnetic block 16 through the electromagnetic block 15, and the electromagnetic block 15 is connected with the electromagnetic block 15 in an elastic spring 13, and the second precast bridge 15 is convenient for the electromagnetic block 15, and the electromagnetic block 15 is connected with the second precast bridge 15, and the electromagnetic bridge 15 is convenient to carry out the electromagnetic bridge 15.
In order to facilitate the movement of the movable plate 1, the tensile test of the prefabricated concrete pier is convenient to strengthen, the four corners of the lower end face of the movable plate 1 are provided with first support columns 4, the lower ends of the first support columns 4 are connected with rollers 3, one sides of the rollers 3 are provided with braking pieces, and the rollers 3 are designed to facilitate the movement of the movable plate 1.
In order to facilitate the lifting and descending of the movable plate 1 and facilitate the tensile test of the reinforced prefabricated concrete bridge pier, the lower end face of the movable plate 1 is further provided with a lifting assembly 6, the lifting assembly 6 is connected with a first supporting plate 12, and the lifting assembly 6 is used for controlling the lifting of the first supporting plate 12.
In order to facilitate the lifting and descending of the movable plate 1 and facilitate the reinforcement of the tensile test of the prefabricated concrete bridge pier, the lifting assembly 6 comprises a first electric telescopic push rod connected with the lower end face of the movable plate 1, and the lower end of the first electric telescopic push rod is connected with the first support plate 12.
In order to be convenient for remove board 1 rise and descend, be convenient for strengthen the tensile experiment of prefabricated concrete pier, lifting unit 6 include with terminal surface connection's first motor 7 under the removal board 1, the output of first motor 7 is connected with first threaded rod 8, the outside cover of first threaded rod 8 is equipped with thread bush 9, 8 one side of first threaded rod be provided with 8 parallel arrangement's of first threaded rod first guide arm 10, slide on the first guide arm 10 have with 9 fixed connection's of thread bush first slip cap piece 11, thread bush 9 with first backup pad 12 is connected.
In order to facilitate the adjustment when the movable plate 1 is lifted and lowered, a second support plate is arranged below the first support plate 12 and is parallel to the first support plate 12, and the second support plate is connected with the first support plate 12 through a plurality of third elastic springs.
To facilitate control of the energizing or de-energizing of the electromagnet block 16, the left-right moving assembly includes a second electric telescopic push rod 22, and a telescopic end of the second electric telescopic push rod 22 is connected to the slide plate 18.
In order to limit the moving direction of the sliding plate 18, a first sliding groove is arranged in the cavity 17, and a first sliding block connected with the sliding plate 18 is slidably arranged in the first sliding groove.
In order to limit the moving direction of the sliding plate 18, a first sliding rod is arranged in the cavity 17, and a second sliding block connected with the sliding plate 18 is arranged on the first sliding rod in a sliding manner.
When the tensile strength test is required to be carried out on the prefabricated concrete bridge piers, the movable plate 1 is moved between the two prefabricated concrete bridge piers, then the left-right movable component controls the sliding plate 18 to move so that the electromagnetic block 16 is electrified, the impact iron block 15 is attracted by the electromagnetic block 16 to compress the first elastic spring 13 and the second elastic spring 21, when the electromagnetic block 16 is not electrified, the impact iron block 15 is impacted towards the prefabricated concrete bridge pier under the action of the first elastic spring 13 and the second elastic spring 21, the impact iron block 15 is connected with the prefabricated concrete bridge pier through the sucking disc when the impact iron block 15 is impacted, the impact iron blocks 15 respectively connected with the first elastic spring 13 and the second elastic spring 21 are pulled in opposite directions, the tensile strength test is conveniently carried out on the two prefabricated concrete bridge piers at the same time, and the test efficiency of the prefabricated concrete bridge pier is conveniently improved.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; combinations of features of the above embodiments or in different embodiments are also possible within the spirit of the present disclosure, steps may be implemented in any order, and there are many other variations of the different aspects of one or more embodiments described above which are not provided in detail for the sake of brevity.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure one or more embodiments of the present description. Furthermore, the apparatus may be shown in block diagram form in order to avoid obscuring the one or more embodiments of the present description, and also in view of the fact that specifics with respect to implementation of such block diagram apparatus are highly dependent upon the platform within which the one or more embodiments of the present description are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that one or more embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the one or more embodiments of the disclosure, are therefore intended to be included within the scope of the disclosure.
Claims (9)
1. The utility model provides an assembled precast concrete pier column tensile strength detects experimental apparatus, its characterized in that, including movable plate (1), be provided with vertical board (2) on movable plate (1), be provided with cavity (17) in vertical board (2), equidistant a plurality of electromagnetism piece (16) of being provided with in cavity (17), every electromagnetism piece (16) one end loops through the resistance and is connected with the power, the power other end is connected with the electric connection board, every electromagnetism piece (16) one side all is provided with one and corresponds the electric connection board that sets up, all the electric connection board all is connected on sliding plate (18), sliding plate (18) are connected with side-to-side movable assembly, side-to-side movable assembly is used for controlling sliding plate (18) side-to-side slip and makes the electric connection board with electromagnetism piece (16) contact or contactless, be provided with a plurality of tensile members on movable plate (1); the tensile assembly comprises a first elastic spring (13) arranged on the front side of the movable plate (1), a first multi-section telescopic push rod (14) is sleeved on the outer side of the first elastic spring (13), a second elastic spring (21) is arranged on the rear side of the movable plate (1), a second multi-section telescopic push rod (20) is sleeved on the outer side of the second elastic spring (21), impact iron blocks (15) are connected to the telescopic ends of the first multi-section telescopic push rod (14) and the second multi-section telescopic push rod (20), the first multi-section telescopic push rod (14) and the second multi-section telescopic push rod (20) are arranged in parallel, an electromagnetic block (16) is arranged between the first multi-section telescopic push rod (14) and the second multi-section telescopic push rod (20), sucking discs are arranged on one sides of the two impact iron blocks (15) which are oppositely arranged, and a first clamping piece and a second clamping piece are respectively arranged at the upper end and the lower end of the impact iron block (15);
When the tensile strength test is required to be carried out on the prefabricated concrete bridge pier, the movable plate (1) is moved between the two prefabricated concrete bridge pier, then the left-right movable component controls the sliding plate (18) to move so that the electromagnetic block (16) is electrified, the impact iron block (15) is attracted by the electromagnetic block (16) to compress the first elastic spring (13) and the second elastic spring (21), when the electromagnetic block (16) is not electrified, the impact iron block (15) is impacted towards the prefabricated concrete bridge pier under the action of the first elastic spring (13) and the second elastic spring (21), the impact iron block (15) is connected with the prefabricated concrete bridge pier during impact, the impact iron block (15) respectively connected with the first elastic spring (13) and the second elastic spring (21) are pulled in opposite directions, and then the tensile strength test is carried out on the prefabricated concrete bridge pier.
2. The assembled precast concrete pier column tensile strength detection experimental device according to claim 1, wherein first support columns (4) are arranged at four corners of the lower end face of the movable plate (1), the lower ends of the first support columns (4) are connected with rollers (3), and one side of each roller (3) is provided with a braking piece.
3. The assembled precast concrete pier column tensile strength detection experimental device according to claim 1, wherein a lifting assembly (6) is further arranged on the lower end face of the movable plate (1), the lifting assembly (6) is connected with a first supporting plate (12), and the lifting assembly (6) is used for controlling the first supporting plate (12) to lift.
4. A prefabricated concrete bridge column tensile strength detection experimental device according to claim 3, characterized in that the lifting assembly (6) comprises a first electric telescopic push rod connected with the lower end surface of the movable plate (1), and the lower end of the first electric telescopic push rod is connected with the first supporting plate (12).
5. The assembled precast concrete pier column tensile strength detection experimental device according to claim 3, characterized in that the lifting assembly (6) comprises a first motor (7) connected with the lower end face of the movable plate (1), the output end of the first motor (7) is connected with a first threaded rod (8), a thread bush (9) is sleeved outside the first threaded rod (8), a first guide rod (10) arranged in parallel with the first threaded rod (8) is arranged on one side of the first threaded rod (8), a first sliding sleeve block (11) fixedly connected with the thread bush (9) is arranged on the first guide rod (10) in a sliding mode, and the thread bush (9) is connected with the first support plate (12).
6. A prefabricated concrete bridge column tensile strength detection experimental device according to claim 3, characterized in that a second support plate arranged in parallel with the first support plate (12) is arranged below the first support plate (12), and the second support plate is connected with the first support plate (12) through a plurality of third elastic springs.
7. The device for detecting and testing the tensile strength of the prefabricated concrete bridge pier according to claim 1, wherein the left-right moving assembly comprises a second electric telescopic push rod (22), and the telescopic end of the second electric telescopic push rod (22) is connected with the sliding plate (18).
8. The device for detecting and testing the tensile strength of the prefabricated concrete bridge pier according to claim 1, wherein a first sliding groove is formed in the cavity (17), and a first sliding block connected with the sliding plate (18) is slidably arranged in the first sliding groove.
9. The device for detecting and testing the tensile strength of the fabricated precast concrete pier column according to claim 1, wherein a first sliding rod is arranged in the cavity (17), and a second sliding block connected with the sliding plate (18) is arranged on the first sliding rod in a sliding manner.
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| CN202110271849.2A CN113075034B (en) | 2021-03-12 | 2021-03-12 | Tensile strength detection experimental device for prefabricated concrete bridge pier |
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| CN202110271849.2A CN113075034B (en) | 2021-03-12 | 2021-03-12 | Tensile strength detection experimental device for prefabricated concrete bridge pier |
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| CN209495790U (en) * | 2018-12-26 | 2019-10-15 | 贺州通号装配式建筑有限公司 | A kind of prefabricated concrete stress test device |
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