CN208830374U - A kind of load test system for concrete pipe base - Google Patents
A kind of load test system for concrete pipe base Download PDFInfo
- Publication number
- CN208830374U CN208830374U CN201821491220.9U CN201821491220U CN208830374U CN 208830374 U CN208830374 U CN 208830374U CN 201821491220 U CN201821491220 U CN 201821491220U CN 208830374 U CN208830374 U CN 208830374U
- Authority
- CN
- China
- Prior art keywords
- displacement
- bracing wire
- load
- loading plate
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of load test systems for concrete pipe base, including load pump, load box and displacement measuring device, load pump includes the pump housing, power input shaft, eccentric wheel and two piston loading systems, eccentric wheel is installed in the pump housing by power input shaft, a pair of pistons loading system has been arranged symmetrically in the two sides of the pump housing, piston loading system includes a linkage check valve, pressurize fluid cylinder, plunger and reset spring, pressurization fluid cylinder one end is connected to pump body, the other end is connected to linkage check valve, plunger at one end protrudes into pressurization fluid cylinder, the other end is contacted with eccentric wheel, reset spring is also equipped between the plunger tip and pressurization fluid cylinder end.The utility model improves load test system, devises dedicated load pump for load box, which can reach 60Mpa, therefore this system can directly load load box with water, and not only medium is easily found, but also environmental protection, pollution-free.
Description
Technical field
The present invention relates to a kind of load test system, in particular to a kind of load test system for concrete pipe base.
Background technique
Load box is pressure test unit or loading device in foundation pile self-balanced static-load testing, is embedded in pile body and put down
Weighing apparatus point place, by load box multistage loadings, observation displacement obtains data, the Load-settlement for drawing upper and lower end pile body be displaced and on
Curve is pulled out, to obtain single pile vertical resistance pressure (resistance to plucking) ultimate bearing capacity of test pile.Traditional load box load is to pass through liquid
Pressure oil loads load box, and the hydraulic oil after load, which can not recycle, not only causes great waste in this way, but also to ring
Load test system is improved in the present invention there are also polluting in border, devises special high-pressure water pump, Ke Yizhi for load box
It connects and load box is loaded with water, not only medium is easily found, but also environmental protection, pollution-free.
Summary of the invention
Water can be used as medium the technical problem to be solved in the present invention is to provide one kind to load load box, ring
Protect the load test system of free of contamination concrete pipe base.
The technical solution of the present invention is as follows:
A kind of load test system for concrete pipe base, including load pump, load box and displacement measuring device, it is special
Sign is: the load pump includes that the pump housing, power input shaft, eccentric wheel and two piston loading systems, the eccentric wheel pass through
Power input shaft is installed in the pump housing, has been arranged symmetrically a pair of pistons loading system in the two sides of the pump housing, the piston adds
Loading system includes a linkage check valve, pressurization fluid cylinder, plunger and reset spring, and described pressurization fluid cylinder one end and pump body connect
Logical, the other end is connected to linkage check valve, and the plunger at one end protrudes into pressurization fluid cylinder, and the other end is contacted with eccentric wheel, in institute
It states and is also equipped with reset spring between plunger tip and pressurization fluid cylinder end；The outlet of the linkage check valve is connected into same pipeline
And control is installed in tube outlet and carries valve, it is then connected by the hydraulic jack that control carries valve and load box, institute's displacement measurement dress
The displacement bracing wire with load box is set to connect.
Further, position corresponds respectively to the minimum stroke and most of plunger at the maximum diameter and minimum diameter of eccentric wheel
Big travel position.
Further, load box includes load cabinet, and madjack pipe, hydraulic tube and displacement bracing wire, the load cabinet is by ring
The upper loading plate of shape and lower loading plate composition, uniformly install several strings around its inner ring between the upper loading plate and lower loading plate
The hydraulic jack of connection, the equal spot welding strip of paper used for sealing sealing between inner ring between the upper loading plate and the outer ring of lower loading plate；It is described
Displacement bracing wire is divided into displacement bracing wire and bottom offset bracing wire, and the upper displacement bracing wire is symmetrically connected on loading plate, under described
Displacement bracing wire passes vertically through loading plate and is symmetrically connected on lower loading plate；The hydraulic jack is connect with hydraulic tube, is surrounded
The load cabinet is centrosymmetrically arranged two madjack pipes being in communication with the outside；The displacement bracing wire includes wirerope and is located at
The bracing wire outer tube of wirerope appearance, the bracing wire housing pipe end are tightly connected by rubber sleeve and upper loading plate.
Further, displacement bracing wire further includes color zinc part pressure head, aluminium alloy pressure head and connects bolt, the displacement bracing wire
Wirerope lower end passes through connection bolt, and installs aluminium alloy pressure head at wirerope both ends, installs color zinc at bracing wire outer tube both ends
Part pressure head, the rubber sleeve cover on the color zinc part pressure head of bracing wire outer tube lower end.
Further, upper loading plate attacks installation screw and installs displacement bar to connect upper displacement bracing wire, the lower loading plate
Seat and through hole pierce the center weld installation nut that upper loading plate out is concordant with upper loading plate, in the displacement pole socket end,
The bottom offset bracing wire is connected through bolt and connect with the installation nut for being displaced pole socket.
Further, displacement measuring device includes crossbeam, displacement sensor, pulley gear, clump weight, level meter and drawing
Line, institute's displacement sensors are hung vertically in crossbeam side by the suspension being mounted on crossbeam, under institute's displacement sensors
End is equipped with line card；The pulley gear is arranged in crossbeam lower end, including at least two horizontally disposed pulleys, and the bracing wire is from position
The line card downward vertical of displacement sensor is pierced by fixation, then vertically from the pulley of one end around to the pulley of the other end, and in bracing wire
End suspended counterweight block installs level meter on the crossbeam.
Further, pulley gear includes that both ends are equipped with the adsorption plate of strong magnets and are vertically installed at adsorption plate lower end
Axillare, the axillare side by shaft install pulley, the adsorption plate by utilizing powerful magnet for adsorption in crossbeam lower end.
Further, the line card includes fixed part and fastening bolt, and the fixed part center is vertically provided with threading hole, institute
Fastening bolt is stated to be horizontally arranged at fixed part end and wear to threading hole.
The invention has the beneficial effects that:
(1) present invention improves load pump, it is made to have gathered centrifugal force (forcing) pump continuous work, the operation is stable
The characteristics of advantage and plunger type force (forcing) pump moulding pressure are high, good seal performance.The water-aspirator pressure can reach 60Mpa.Cause
This its water can be used as medium load box is loaded, not only medium is easily found, but also environmental protection, pollution-free.
(2) present invention also improves load box, and bracing wire housing pipe end is sealed by rubber sleeve and upper loading plate
Connection, such concreting back guy outer tube will keep apart concrete grout and wirerope with rubber sleeve, guarantee steel wire
The flexibility that rope has, avoids wirerope from being solidified, and so as to energy accurate transfer change in displacement, provides accurately data.In the past
When using rigid displacement pull rod, since the concrete of displacement pull rod outer protective jacket can instead give birth to stress variation after solidification, in addition
The factors such as self weight can occur extruding or certain curvature effect to displacement pull rod outer protective jacket, internal displacement is caused to draw
Bar can not precisely action displacement be changed by corresponding stress, and these will not then generate any shadow for wirerope flexible
It rings, the brake cable for just wearing bicycle is the same, and no matter how appearance, which is bent all, will not influence internal brake steel wire running.Therefore position
It moves bracing wire only to need to be approximately perpendicular to load cabinet when installation, guarantee like that vertically without image displacement pull rod
Installation, installation is more convenient, and uses displacement bracing wire from economic aspect also relatively displacement pull rod save the cost.
(3) present invention improves displacement measuring device, and when being mounted with level meter installation on crossbeam, observation is horizontal
Instrument, can guarantee the levelness of crossbeam in this way, to improve measurement accuracy, also avoid the trouble that the later period adjusts crossbeam again, and
And the form that pulley blocks add clump weight is used, so that the displacement that the more convenient test of the present invention is upward.
Detailed description of the invention
Fig. 1 is load pump structural schematic diagram；
Fig. 2 is load box structural schematic diagram；
Fig. 3 is the welding schematic diagram of load box and steel reinforcement cage；
Fig. 4 is load box section mud jacking schematic diagram；
Fig. 5 is displacement guy structure schematic diagram；
Fig. 6 is displacement measuring device structural schematic diagram；
Fig. 7 is the Section A-A structural schematic diagram in Fig. 6；
Fig. 8 is the line card enlarged structure schematic diagram in Fig. 7；
Fig. 9 is load box displacement measurement theory structure schematic diagram.
In figure: 1- load pump, the 11- pump housing, 12- power input shaft, 13- eccentric wheel, 14- piston loading system, 14a- add
Hydraulic fluid cylinder, 14b- plunger, 14c- reset spring, 14d- linkage check valve, 15- water tank, 16-, which is controlled, carries valve, 2- load box, under 201-
Loading plate, the upper loading plate of 201a-, 202- hydraulic jack, 202a- strip of paper used for sealing, 203- are displaced bracing wire, are displaced bracing wire on 2031-,
2032- bottom offset bracing wire, 203a- wirerope, 203b- bracing wire outer tube, 203c- coloured silk zinc part pressure head, 203d- aluminium alloy pressure head,
203e- connection bolt, 203f- rubber sleeve, 204- displacement pole socket, 205- madjack pipe, 206- hydraulic tube, 207- installation screw,
208- installation nut, 209- concrete, 210- steel reinforcement cage, 211- load section, 3- displacement measuring device, 31- crossbeam, 32- are outstanding
Frame, 33- displacement sensor, 34- line card, 34a- fixed part, 34b- threading hole, 34c- fastening bolt, 35- pulley gear, 35a-
Strong magnets, 35b- adsorption plate, 35c- axillare, 35d- shaft, 35e- pulley, 36- clump weight, 37- level meter, 38- bracing wire.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
As shown in figs 1-9:
A kind of load test system for concrete pipe base, including load pump 1, load box 2 and displacement measuring device 3,
The load pump 1 includes the pump housing 11, power input shaft 12, eccentric wheel 13 and two piston loading systems 14, the eccentric wheel 13
It is installed in the pump housing 11 by power input shaft 12, has been arranged symmetrically a pair of pistons loading system in the two sides of the pump housing 11
14, the piston loading system 14 includes a linkage check valve 14d, pressurize fluid cylinder 14a, plunger 14b and reset spring 14c,
It is connected to inside described pressurization one end fluid cylinder 14a and the pump housing 11, the other end is connected to linkage check valve 14d, the one end the plunger 14b
It protrudes into pressurization fluid cylinder 14a, the other end is contacted with eccentric wheel 13, between the end the plunger 14b and the pressurization end fluid cylinder 14a
It is also equipped with reset spring 14c；The outlet of the linkage check valve 14d, which is connected into same pipeline and installs control in tube outlet, carries valve
16, valve 16 is then carried by control and is connect with the hydraulic jack 202 of load box 2, institute's displacement measurement device 3 and load box 2
It is displaced bracing wire connection.
Working principle: the load pump 1 in the present invention uses self-designed dedicated pump, power input shaft 12 and external biography
Dynamic system key connection transmission power (generally using motor), power input shaft 12 is operated with movable eccentric wheel 13, piston load
Plunger 14b in system 14 constantly moves reciprocatingly under the action of eccentric wheel 13 and spring, when eccentric wheel 13 rotates, diameter
Gradually smaller one end reset spring 14c releases energy, and plunger 14b does suction movement under the thrust of reset spring 14c, at this time
Link check valve 14d under the action of negative pressure entrance open, outlet close (linkage check valve 14d possess inlet and outlet and
The spool of connector between import and outlet, import and outlet is linkage, and when import is opened, outlet be may turn off),
Water is entered in pressurization fluid cylinder 14a by the entrance for the check valve 14d that links, and completes to take out at minimum diameter until eccentric wheel 13 is gone to
It is drawn through journey, when 13 diameter of eccentric wheel becomes larger, plunger 14b is moved into pressurization fluid cylinder 14a under the promotion of eccentric wheel 13, this
When reset spring 14c accumulation of energy, plunger 14b to pressurization fluid cylinder 14a in move during link check valve 14d positive pressure effect
Lower outlet is opened, and entrance is closed, and carries out loading procedure at this time.Although two piston loading systems 14 being arranged symmetrically have suction
With the process of load, but their course of work is complementary, that is, when one when being aspirated, another
It is loaded, therefore when being connected to them, is steadily carried out always in the pipe outlet flow velocity of connection, can only be generated
The impulse oscillation of very little.In order to increase mechanical performance and prevent abrasion etc., profit can be all added between the component of each relative motion
Between lubricating oil, such as pressurization fluid cylinder 14a and plunger 14b, between plunger 14b and eccentric wheel 13 etc..Link check valve 14d when use
Entrance connect with water tank 15, naturally it is also possible to be directly connected to using aqueduct, certain water tank 15 be it is independent, can be
Special water tank 15, is also possible to general bucket, basin etc., and the outlet linkage check valve 14d is connected into same pipeline and in tube outlet
Installation control carries valve 16, is controlled by adjusting and carries valve 16 to carry out the load control to load box 2.
Specifically, in order to guarantee 11 traveling comfort of the pump housing, position at the maximum diameter and minimum diameter of eccentric wheel 13
Correspond respectively to the minimum stroke and maximum travel position of plunger 14b, it is simply that when eccentric wheel 13 maximum gauge with
When plunger 14b is contacted, plunger 14b is located at the extreme position of load at this time, when the minimum diameter of eccentric wheel 13 is contacted with plunger 14b
When, plunger 14b is located at the extreme position of suction at this time, and such benefit is can to guarantee that plunger 14b connects with eccentric wheel 13 always
Touching reduces vibration.The pole that plunger 14b is also not up to loaded when if the maximum gauge of eccentric wheel 13 and plunger 14b are contacted
Extreme position, can thus waste one section pressurization fluid cylinder 14a volume, and if the minimum diameter of eccentric wheel 13 also not with plunger
When 14b is contacted, plunger 14b has arrived at the extreme position of suction at this time, then collision will be generated when next time contacts again, to produce
Raw vibration, influences the service life of eccentric wheel 13 and plunger 14b.
Relative to traditional force (forcing) pump, the load pump in the present invention has the continuous work feature of centrifugal force (forcing) pump, right
Although the piston loading system 14 of arrangement is claimed to have the process of suction and load, their course of work be it is complementary,
Exactly when one when being aspirated, another is being loaded, therefore when being connected to them, in the pipe of connection
Road exit velocity steadily carries out always, and impulse oscillation will not be generated as being pumped traditional plunger 14b, but in the pump housing 11
Interior there is no liquid, and liquid main seal is pressurizeed in pressurization fluid cylinder 14a using plunger 14b, therefore does not have conventional centrifugal
Force (forcing) pump is easy the disadvantage of pressure release and leakage under high pressure, and the moulding pressure for having plunger 14b pump instead is high, good seal performance
The characteristics of.Therefore the advantages of present invention has gathered centrifugal force (forcing) pump continuous work, the operation is stable and plunger 14b formula force (forcing) pump
The characteristics of moulding pressure is high, good seal performance.The water-aspirator pressure can reach 60Mpa, and water pump currently on the market is to be difficult
Reach this pressure, its and save the cost more more environmentally-friendly than the oil pump for selling 1,000 on the market, traditional load box 2, which loads, is
Load box 2 is loaded by hydraulic oil, the hydraulic oil after load, which can not recycle, not only causes great waste in this way, and
And to environment there are also polluting, the middle dedicated load pump 1 designed, can directly be loaded load box 2 with water through the invention,
Not only medium is easily found, but also environmental protection, pollution-free.
Load box 2 is pressure test unit or loading device in foundation pile self-balanced static-load testing, is embedded in pile body
At equalization point, by 2 multistage loadings of load box, observation displacement obtains data, draws the Load-settlement displacement of upper and lower end pile body
Curve is above pulled out, to obtain single pile vertical resistance pressure (resistance to plucking) ultimate bearing capacity of test pile.Traditional 2 change in displacement of load box
It using displacement pull rod transmitting, and is displaced pull rod and possesses bigger rigidity, although displacement pull rod has protective case, at end
Hold the position that is connect with load box 2 be displaced pull rod be it is exposed, not so can not connect, concrete 209 is easy to be displaced at this time
Pull rod solidifies, thus can not accurate action displacement, secondly because displacement pull rod outer protective jacket concrete 209 after solidification
Stress variation can be instead given birth to, in addition the factors such as self weight, can occur displacement pull rod outer protective jacket to squeeze or certain bending is imitated
It answers, causes internal displacement pull rod that can not precisely action displacement be changed by corresponding stress, and when installation also
Need to guarantee that it is vertical, installation is inconvenient.Therefore traditional load box 2 is partly improved in the present invention:
Concrete scheme is as follows:
Load box 2 includes load cabinet, and madjack pipe 205, hydraulic tube 206 and displacement bracing wire, the load cabinet is by annular
Upper loading plate 201a and lower loading plate 201 composition, between the upper loading plate 201a and lower loading plate 201 around its inner ring it is equal
Several concatenated hydraulic jacks 202 of even installation, between the upper loading plate 201a and the outer ring of lower loading plate 201 and inner ring it
Between spot welding strip of paper used for sealing 202a sealing；The displacement bracing wire is divided into displacement bracing wire 2031 and bottom offset bracing wire 2032, described upper
It moves bracing wire 2031 to be symmetrically connected on loading plate 201a, it is symmetrical that the bottom offset bracing wire 2032 passes vertically through loading plate 201a
It is connected on lower loading plate 201；The hydraulic jack 202 is connect with hydraulic tube 206, around the center pair of the load cabinet
Claim arrangement two madjack pipes 205 being in communication with the outside；The displacement bracing wire 203 is including wirerope 203a and is located at wirerope 203a
The bracing wire outer tube 203b of appearance, the end bracing wire outer tube 203b are connected by rubber sleeve 203f and upper loading plate 201a sealing
It connects.
2 working principle of load box in the present invention:
As shown in figure 3, the upper and lower side on load cabinet welds steel reinforcement cage 210 before use, for mixing for later period
Solidifying 209, soil pours, and after stake holes is accomplished fluently on ground, load cabinet is put into togerther in the stake of hole together with steel reinforcement cage 210, is embedded in
At pile body equalization point, hydraulic tube 206 is connect by concrete 209 after solidifying with external load pump 1, and start-up loading pump 1 slowly adds
It carries, by 2 multistage loadings of load box, the upper loading plate 201a of load cabinet and lower loading plate 201 are in hydraulic jack 202 at this time
Thrust under to concrete 209 load, between upper loading plate 201a and the outer ring of lower loading plate 201 between inner ring strip of paper used for sealing
202a is spot welding, is disconnected automatically in load, and the displacement of upper loading plate 201a and lower loading plate 201 are drawn by upper displacement at this time
Line 2031 and bottom offset bracing wire 2032 are transferred to 209 outsides of concrete, then by outside installation displacement sensor 33 come
Observation displacement, obtain displacement data, and combine hydraulic device on-load pressure draw upper and lower end pile body Load-settlement displacement and
On pull out curve, to obtain single pile vertical resistance pressure (resistance to plucking) ultimate bearing capacity of test pile, coagulation during being loaded
Native 209 meetings form load section 211 (see Fig. 4) at load cabinet, constantly pass through 205 pairs of load sections of madjack pipe at this time
211 carry out mud jacking supplement, to supplement the section that load drawing crack is formed.The present invention using displacement bracing wire 203 flexible come instead of
Traditional displacement pull rod, the transmitting of displacement uses wirerope 203a, and outside is then that bracing wire outer tube 203b is protected, outside bracing wire
The end casing 203b is tightly connected by rubber sleeve 203f and upper loading plate 201a, and such concrete 209 pours back guy housing
Pipe 203b and rubber sleeve 203f will starch concrete 209 to be kept apart with wirerope 203a, guarantees the spirit that wirerope 203a has
Activity avoids wirerope 203a from being solidified, and so as to energy accurate transfer change in displacement, provides accurately data.And using rigid
Property displacement pull rod when, due to displacement pull rod outer protective jacket concrete 209 can instead give birth to stress variation after solidification, in addition be self-possessed
Etc. factors, displacement pull rod outer protective jacket can be occurred squeeze or certain curvature effect, cause internal displacement pull rod by
Can not precisely action displacement it change to corresponding stress, and these will not then generate any shadow for wirerope 203a flexible
It rings, the brake cable for just wearing bicycle is the same, and no matter how appearance, which is bent all, will not influence internal brake steel wire running, therefore position
It moves bracing wire 203 only to need to be approximately perpendicular to load cabinet when installation, guarantee like that without image displacement pull rod
Right angle setting, installation is more convenient, and uses displacement bracing wire 203 from economic aspect also relatively displacement pull rod save the cost, the present invention
The hydraulic jack 202 of load box 2 cooperates the load pump 1 in the present invention, and water can be used and come as hydraulic medium, because of load
Hydraulic oil afterwards can not recycle and not only cause great waste in this way, but also to environment there are also polluting, using water to load box 2
It is loaded, not only medium is easily found, but also environmental protection, pollution-free.It should be noted that only to traditional lotus in the present invention
It carries 2 drawback of case to be improved, can still cooperate the load pump 1 in the present invention to carry out work using other existing load boxes 2
Make.
Specifically, displacement bracing wire 203 further include color zinc part pressure head 203c, aluminium alloy pressure head 203d and connection bolt 203e,
The lower end wirerope 203a of the displacement bracing wire 203 passes through connection bolt 203e, and installs aluminium alloy at the both ends wirerope 203a
Pressure head 203d is attached enhanced convenience by connection bolt 203e, can using welding or be threadedly coupled all can,
Installation coloured silk zinc part pressure head 203c, the rubber sleeve 203f cover the coloured silk in the lower end bracing wire outer tube 203b at the bracing wire both ends outer tube 203b
On zinc part pressure head 203c, color zinc part pressure head 203c is first is that for the both ends banding bracing wire outer tube 203b, second is that rubber for convenience
The installation of 203f is covered, one can also be made with the end bracing wire outer tube 203b in certain rubber sleeve 203f.
Specifically, disassembling for convenience, displacement bracing wire 203 is all made of screw thread installation, and upper loading plate 201a attacks installation screw
207 to connect upper displacement bracing wire 2031, and the lower installation of the loading plate 201 displacement pole socket 204 and through hole are pierced above to be carried out
Plate 201a is concordant with upper loading plate 201a, and the center weld in displacement 204 end of pole socket installs nut 208, the bottom
Shifting bracing wire 2032 is connected through bolt 203e and connect with the installation nut 208 for being displaced pole socket 204, and loading plate 201 is downward instantly
When mobile, the bracing wire outer tube 203b and rubber sleeve 203f of bottom offset bracing wire 2032 are set in concrete 209, and wirerope
203a connection bolt 203e traction under with displacement 204 downlink of pole socket, to be driven change in displacement.
The measurement that last load box 2 is displaced all is to need to use displacement sensor 33 to test the displacement of displacement bracing wire 203,
Previous load box 2 uses displacement bar, and the displacement that can be transmitted upwardly or downwardly is directly connect with displacement sensor 33, and
A kind of load box 2 using flexible displacement bracing wire is devised in the present invention, it, cannot since flexibility displacement bracing wire can only generate pulling force
Thrust is generated, is difficult to test upward displacement, and displacement sensor 33 generally sets up installation by crossbeam 31, if crossbeam 31 is pacified
Dress is not horizontal, will affect measurement accuracy, if measuring again after installation and will lead to adjustment trouble, in view of the above-mentioned problems, in the present invention
Also traditional displacement measuring device 3 is optimized.
Specific scheme is as follows:
Displacement measuring device 3 includes crossbeam 31, displacement sensor 33, pulley gear 35, clump weight 36, level meter 37 and draws
Line 38, institute's displacement sensors 33 are hung vertically in 31 side of crossbeam by the suspension 32 being mounted on crossbeam 31, in institute's rheme
33 lower end of displacement sensor is equipped with line card 34；The pulley gear 35 is arranged in 31 lower end of crossbeam, including at least two horizontally disposed
Pulley 35e, the bracing wire 38 is pierced by fixation from 34 downward vertical of line card of displacement sensor 33, then vertically from the cunning of one end
Take turns 35e around to the other end pulley 35e, and on 38 end suspended counterweight block 36 of bracing wire, the crossbeam 31 install level meter 37.
Specifically, dismounting, adjustment and transport etc. for convenience, pulley gear 35 is designed to magnetic adsorption, passes through magnet
Absorption installation specifically includes both ends and is equipped with the adsorption plate 35b of strong magnets 35a and is vertically installed at the lower end adsorption plate 35b
Pulley 35e is installed by shaft 35d in axillare 35c, the side the axillare 35c, and the adsorption plate 35b is inhaled by strong magnets 35a
It is attached to 31 lower end of crossbeam, naturally it is also possible to it is fixed etc. using welding or bolt, but be inconvenient to adjust and dismount in this way.
Specifically, line card 34 includes that fixed part 34a and the center fastening bolt 34c, the fixed part 34a are vertically provided with threading
Hole 34b, the fastening bolt 34c are horizontally arranged at the end fixed part 34a and wear to threading hole 34b, and certain line card 34 acts on
Only bracing wire is fixed, the utility model merely provides a feasible scheme, other are any can to fix bracing wire
Structure.
This displacement measuring device 3 uses principle (Fig. 9): crossbeam 31 being first mounted on the top of load box 2 when use, when installation
Level meter 37 is observed, can guarantee the levelness of crossbeam 31 in this way, to improve measurement accuracy, and line card 34 and displacement bracing wire
203 are in a vertical line, and bracing wire one end is connect with the wirerope 203a of the displacement bracing wire 203 of load box 2, and the other end is from line
Block 34 downward verticals to be pierced by, then vertically from the pulley 35e of one end around to the pulley 35e of the other end, and be hung in end of pulling
Clump weight 36, the wirerope 203a of the displacement bracing wire 203 of load box 2 is connect with the bracing wire 38 of displacement measuring device 3 when use, so
Clump weight 36 is slowly decontroled afterwards, and bracing wire 38 is tightened, is fixed bracing wire 38 followed by line card 34, then by displacement sensor
33 connect electric work, when downward displacement occurs for 2 bottom offset bracing wire 2032 of load box, it will by bracing wire 38 by displacement sensor 33
Transducing part haul downlink, and when upper displacement 2031 uplink of bracing wire, due to the bracing wire relaxation of 34 lower section of line card, displacement sensing
The transducing part of device 33 will haul uplink by the bracing wire 38 above line card 34 under the action of clump weight 36, until by line card
The bracing wire 38 of 34 lower sections tenses, and the displacement of load box 2 is transferred to displacement sensor 33 to realize, it should be noted that not making
The displacement that bracing wire 38 can be still measured with displacement measuring device 3 improved in the present invention uses existing drawstring displacement sensing
Device 33 can also be with only Installation And Test is inconvenient.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (8)
1. a kind of load test system for concrete pipe base, including load pump (1), load box (2) and displacement measuring device
(3), it is characterised in that: the load pump (1) includes the pump housing (11), power input shaft (12), eccentric wheel (13) and two pistons
Loading system (14), the eccentric wheel (13) is installed in the pump housing (11) by power input shaft (12), in the pump housing (11)
Two sides be arranged symmetrically a pair of pistons loading system (14), the piston loading system (14) include a linkage check valve
(14d), pressurization fluid cylinder (14a), plunger (14b) and reset spring (14c), pressurization fluid cylinder one end (14a) and the pump housing (11)
Inside connection, the other end are connected to linkage check valve (14d), and described plunger (14b) one end is protruded into pressurization fluid cylinder (14a), separately
One end is contacted with eccentric wheel (13), is also equipped with reset bullet between the plunger end (14b) and pressurization end fluid cylinder (14a)
Spring (14c)；The outlet of linkage check valve (14d), which is connected into same pipeline and installs control in tube outlet, carries valve (16), then
It carries valve (16) by control to connect with the hydraulic jack (202) of load box (2), institute's displacement measurement device (3) and load box (2)
Displacement bracing wire (203) connection.
2. the load test system according to claim 1 for concrete pipe base, it is characterised in that: the eccentric wheel
(13) position corresponds respectively to the minimum stroke and maximum travel position of plunger (14b) at maximum diameter and minimum diameter.
3. the load test system according to claim 1 for concrete pipe base, it is characterised in that: the load box
It (2) include load cabinet, madjack pipe (205), hydraulic tube (206) and displacement bracing wire (203), the load cabinet is upper by annular
Loading plate (201a) and lower loading plate (201) composition, between the upper loading plate (201a) and lower loading plate (201) in it
Ring uniformly installs several concatenated hydraulic jacks (202), the outer ring of the upper loading plate (201a) and lower loading plate (201) it
Between equal spot welding strip of paper used for sealing (202a) sealing between inner ring；The displacement bracing wire (203) is divided into displacement bracing wire (2031) and bottom
It moves bracing wire (2032), the upper displacement bracing wire (2031) is symmetrically connected on loading plate (201a), the bottom offset bracing wire
(2032) loading plate (201a) is passed vertically through to be symmetrically connected on lower loading plate (201)；The hydraulic jack (202) and liquid
Pressure pipe (206) connection, is centrosymmetrically arranged two madjack pipes being in communication with the outside (205) around the load cabinet；It is described
Displacement bracing wire (203) includes wirerope (203a) and the bracing wire outer tube (203b) for being located at wirerope (203a) appearance, the drawing
The line outer tube end (203b) is tightly connected by rubber sleeve (203f) and upper loading plate (201a).
4. the load test system according to claim 3 for concrete pipe base, it is characterised in that: the displacement bracing wire
It (203) further include color zinc part pressure head (203c), aluminium alloy pressure head (203d) and connection bolt (203e), the displacement bracing wire
(203) the wirerope lower end (203a) passes through connection bolt (203e), and installs aluminium alloy pressure head at the wirerope both ends (203a)
(203d) installs color zinc part pressure head (203c) at the bracing wire outer tube both ends (203b), and the rubber sleeve (203f) covers outside bracing wire
On the color zinc part pressure head (203c) of the lower end casing (203b).
5. the load test system according to claim 4 for concrete pipe base, it is characterised in that: the upper loading plate
(201a) attacks installation screw (207) to connect upper displacement bracing wire (2031), lower loading plate (201) the installation displacement pole socket
(204) and through hole pierce it is concordant with upper loading plate (201a) out upper loading plate (201a), in displacement pole socket (204) end
Center weld install nut (208), the bottom offset bracing wire (2032) be connected through bolt (203e) and displacement pole socket
(204) installation nut (208) connection.
6. the load test system according to claim 1-5 for concrete pipe base, it is characterised in that: described
Displacement measuring device (3) includes crossbeam (31), displacement sensor (33), pulley (35e) device (35), clump weight (36), level
Instrument (37) and bracing wire (38), institute's displacement sensors (33) are hung vertically in cross by the suspension (32) being mounted on crossbeam (31)
Beam (31) side is equipped with line card (34) in institute's displacement sensors (33) lower end；Pulley (35e) device (35) is arranged in cross
Beam (31) lower end, including at least two horizontally disposed pulleys (35e), line card of the bracing wire (38) from displacement sensor (33)
(34) downward vertical is pierced by fixation, then vertically from the pulley (35e) of one end around to the pulley (35e) of the other end, and in bracing wire
(38) level meter (37) are installed on the crossbeam (31) in end suspended counterweight block (36).
7. the load test system according to claim 6 for concrete pipe base, it is characterised in that: the pulley
(35e) device (35) includes that both ends are equipped with the adsorption plate (35b) of strong magnets (35a) and are vertically installed at adsorption plate (35b)
The axillare (35c) of lower end, by shaft (35d) installation pulley (35e), the adsorption plate (35b) is logical for the axillare side (35c)
It crosses strong magnets (35a) and is adsorbed on crossbeam (31) lower end.
8. the load test system according to claim 6 for concrete pipe base, it is characterised in that: the line card (34)
Including fixed part (34a) and fastening bolt (34c), fixed part (34a) center is vertically provided with threading hole (34b), described tight
Fixing bolt (34c) is horizontally arranged at the fixed part end (34a) and wears to threading hole (34b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821491220.9U CN208830374U (en) | 2018-09-12 | 2018-09-12 | A kind of load test system for concrete pipe base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821491220.9U CN208830374U (en) | 2018-09-12 | 2018-09-12 | A kind of load test system for concrete pipe base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208830374U true CN208830374U (en) | 2019-05-07 |
Family
ID=66312955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821491220.9U Active CN208830374U (en) | 2018-09-12 | 2018-09-12 | A kind of load test system for concrete pipe base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208830374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824508A (en) * | 2018-09-12 | 2018-11-16 | 贵州鑫瑞达科技有限公司 | A kind of load test system for concrete pipe base |
| CN110241869A (en) * | 2019-07-15 | 2019-09-17 | 重庆科技学院 | A kind of foundation bearing capacity plate dynamic loading experiment device and method |
-
2018
- 2018-09-12 CN CN201821491220.9U patent/CN208830374U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824508A (en) * | 2018-09-12 | 2018-11-16 | 贵州鑫瑞达科技有限公司 | A kind of load test system for concrete pipe base |
| CN110241869A (en) * | 2019-07-15 | 2019-09-17 | 重庆科技学院 | A kind of foundation bearing capacity plate dynamic loading experiment device and method |
| CN110241869B (en) * | 2019-07-15 | 2023-12-01 | 重庆科技学院 | Device and method for testing dynamic load of foundation bearing capacity flat plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208830374U (en) | A kind of load test system for concrete pipe base | |
| CN101654145B (en) | Ocean floating type drilling platform crown-block heave compensator | |
| CN108824508A (en) | A kind of load test system for concrete pipe base | |
| CN103806369B (en) | For the connected mode of the viscous damper of Longspan Bridge antidetonation | |
| CN101100936B (en) | Beam type hydraulic energy-saving pumping unit | |
| CN202785169U (en) | Automatic pull force balancer for rope taper sleeves of elevator | |
| CN111911114A (en) | Intelligent ultra-long stroke hoisting oil pumping unit | |
| CN2463453Y (en) | Shock isolating independent pile platform | |
| CN110984113B (en) | Pile body soil pressure box installation system and installation method | |
| CN105697221B (en) | Medusoid tide surge generating device | |
| CN203296677U (en) | Single connecting lever overrunning percussion drill | |
| CN207453895U (en) | Vehicular single cylinder lower oil tube operation device under pressure | |
| CN208830373U (en) | A kind of environmental protection load box | |
| CN201068786Y (en) | Beam type hydraulic energy-saving oil pump | |
| CN203879467U (en) | Liquid gravity transfer driving lever-type pumping unit | |
| CN108797663A (en) | A kind of environmental protection load box | |
| CN206487448U (en) | A kind of pulley energy-conserving hydraulic formation testing drainage system | |
| CN207131381U (en) | Self-balancing intelligent oil pumping machine | |
| CN201277015Y (en) | Weight machine-controlled lever-type petroleum pumping unit | |
| CN2557772Y (en) | Overflow-resistant quantitative liquid charge device | |
| CN203064978U (en) | Intelligent compensation bearing device for elongation of steel wire rope bearing cage | |
| CN208441114U (en) | A kind of adjustable rectangle suspension device of geotechnical engineering | |
| CN208106403U (en) | Study of Cyclic Loading experimental provision system for lifting weight balance beam type oil pump | |
| CN102889069A (en) | Energy-saving oil extracting device | |
| CN205918402U (en) | Balanced hydraulic cylinder drive beam -pumping unit of walking beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |