CN106758848B - Intelligent vertical prestressed reinforcement tensioning equipment for bridge construction and use method - Google Patents
Intelligent vertical prestressed reinforcement tensioning equipment for bridge construction and use method Download PDFInfo
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- CN106758848B CN106758848B CN201710043956.3A CN201710043956A CN106758848B CN 106758848 B CN106758848 B CN 106758848B CN 201710043956 A CN201710043956 A CN 201710043956A CN 106758848 B CN106758848 B CN 106758848B
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000002787 reinforcement Effects 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 7
- 210000002435 tendon Anatomy 0.000 claims abstract description 33
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A vertical prestressing tendons intelligent stretch-draw equipment for bridge construction, characterized by: the device comprises a lifting oil cylinder, a frame and a tensioning adjusting device, wherein the lifting oil cylinder is connected with the frame and drives the tensioning adjusting device to linearly displace up and down; the tensioning adjusting device comprises a tensioning oil cylinder, a supporting frame, a hydraulic wrench, a connecting rod and a wrench socket, wherein the supporting frame supports the tensioning oil cylinder and the tensioning oil cylinder in a relatively fixed mode, one end of the connecting rod is connected with the tensioning oil cylinder, the other end of the connecting rod is provided with a connecting sleeve for connecting a vertical prestressed rib, the connecting rod can be driven when the tensioning oil cylinder stretches out and draws back, the wrench socket and the connecting rod are coaxially arranged, and the hydraulic wrench drives the wrench socket to rotate.
Description
Technical Field
The invention relates to intelligent tensioning equipment for a vertical prestressed tendon for bridge construction and a using method thereof.
Background
The Chinese patent publication No. CN202764001U discloses an annular concrete pole prestress inner tensioning device, which comprises a center-penetrating screw rod, a tensioning cylinder, a tensioning inner clamping nut, a tensioning outer clamping nut, a supporting foot, a screwing nut, a tensioning rod, a tensioning plate, an end plate arranged on the tensioning rod and a steel mould arranged on the outer ring of the tensioning plate, wherein the tensioning of vertical prestress ribs can only be realized by the structure, but fastening and positioning cannot be realized, and the structure is single and complex.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides intelligent tensioning equipment for a vertical prestressed tendon, which can tighten and fasten the vertical prestressed tendon and is used for bridge construction, and a use method thereof.
The technical scheme adopted by the invention is as follows: a vertical prestressing tendons intelligent stretch-draw equipment for bridge construction, characterized by: the device comprises a lifting oil cylinder, a frame and a tensioning adjusting device, wherein the lifting oil cylinder is connected with the frame and drives the tensioning adjusting device to linearly displace up and down; the tensioning adjusting device comprises a tensioning oil cylinder, a supporting frame, a hydraulic wrench, a connecting rod and a wrench sleeve, wherein the supporting frame supports the tensioning oil cylinder and the tensioning oil cylinder to be fixedly installed relatively; the hydraulic control system is used for controlling the lifting oil cylinder, the tensioning oil cylinder and the hydraulic wrench; the hydraulic control system comprises a hydraulic pump, an oil return filter, a tensioning oil circuit group for controlling a tensioning oil cylinder, a spanner oil circuit group for controlling a hydraulic spanner and a lifting oil circuit group for controlling a lifting oil cylinder, wherein an oil inlet of the hydraulic pump is communicated with an oil outlet of the oil return filter, and oil returns of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with an oil inlet of the oil return filter; and oil inlets of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with oil outlets of the hydraulic pump.
Further, the spanner sleeve is sleeved on the peripheries of the connecting rod and the connecting sleeve.
Further, the lifting stabilizing mechanism is used for stabilizing the vertical linear displacement of the tensioning adjusting device and comprises a guide post and a guide sleeve, the guide sleeve is sleeved outside the guide post and slides along the guide post, the guide sleeve is fixedly connected with the supporting frame, and the guide post is fixedly connected with the frame; or, the guide sleeve is fixedly connected with the frame, and the guide post is fixedly connected with the support frame.
Further, the lifting and stabilizing mechanism is used for stabilizing the vertical linear displacement of the tensioning and adjusting device and comprises an X-shaped supporting frame and a lifting frame, wherein the X-shaped supporting frame is arranged on two opposite sides of the lifting frame and comprises at least two supporting rods, and the two supporting rods are arranged in a crossing manner; one end of one supporting rod is pivoted with the frame, and the other end is slidably arranged with the lifting frame; one end of the other supporting rod is slidably arranged with the frame, and the other end of the other supporting rod is pivoted with the lifting frame; the support frame is fixedly connected with the lifting frame.
Further, the lifting oil cylinder is an oil cylinder or an air cylinder or a motor.
Further, one end of the lifting oil cylinder is connected with the frame, and the other end of the lifting oil cylinder is connected with the lifting frame, so that the lifting frame is driven to drive the tensioning adjusting device to lift.
Further, the sliding installation of the stay bar and the frame comprises pulleys, the frame and the lifting frame are respectively provided with a sliding groove, the pulleys are pivoted with the stay bar, and the pulleys are arranged in the sliding grooves and extend to slide along the sliding grooves.
Further, the bicycle frame also comprises wheels, and the wheels are arranged at the bottom of the bicycle frame.
Further, the connecting sleeve is a finish rolling threaded steel nut, and the connecting sleeve is in threaded connection with the connecting rod and the vertical prestressed tendons.
Further, the support frame comprises two side plates, an upper transverse plate and a lower transverse plate, wherein the upper transverse plate and the lower transverse plate are arranged up and down, a gap distance is reserved between the upper transverse plate and the lower transverse plate, two ends of the upper transverse plate and two ends of the lower transverse plate are fixedly connected with the two side plates respectively, and through holes are formed in the upper transverse plate and the lower transverse plate respectively.
Further, the tensioning oil circuit group comprises a first electromagnetic directional valve, a first double one-way throttle valve, a first two-way hydraulic lock, a pressure gauge and a first pressure sensor; the first electromagnetic directional valve comprises a 1A# oil port, a 1B# oil port, a 1T# oil port and a 1P# oil port; the first double-one-way throttle valve comprises an oil inlet throttle passage and an oil return throttle passage; the first bidirectional hydraulic lock comprises an oil inlet channel and an oil return channel; the 1A # oil port, the oil return throttling channel and the oil return channel are communicated to form a tensioning oil return oil way; the No. 1B oil port, the oil inlet throttling channel and the oil inlet channel are communicated to form a tensioning oil inlet oil way; the tensioning oil inlet oil way and the tensioning oil return oil way are respectively provided with a pressure gauge, and the tensioning oil inlet oil way is also provided with a first pressure sensor.
Further, the wrench oil way group comprises a second electromagnetic reversing valve, a second throttle valve, a second pressure sensor, a wrench oil inlet oil way and a wrench oil return oil way; the second electromagnetic directional valve comprises a 2A# oil port, a 2B# oil port, a 2T# oil port and a 2P# oil port; the second double-one-way throttle valve comprises a No. 2 oil inlet throttle passage and a No. 2 oil return throttle passage; the 2A # oil port and the 2# oil return throttling channel are communicated to form a spanner oil return path; the 2B # oil port and the 2# oil inlet throttling channel are communicated to form a wrench oil inlet oil path; the wrench oil inlet oil way and the wrench oil return oil way are respectively provided with a second pressure sensor;
further, the lifting oil way group comprises a third electromagnetic reversing valve, a third throttling valve, a third bidirectional hydraulic lock, a third pressure sensor, a lifting oil inlet way and a lifting oil return way; the third electromagnetic directional valve comprises a 3A# oil port, a 3B# oil port, a 3T# oil port and a 3P# oil port; the third throttle valve comprises a 3# oil inlet throttle passage and a 3# oil return throttle passage; the third bidirectional hydraulic lock comprises a 3# oil inlet channel and a 3# oil return channel; the 3A# oil port, the 3# oil return throttling channel and the 3# oil return channel are communicated to form a lifting oil return oil path; the 3B# oil port, the 3# oil inlet throttling channel and the 3# oil inlet channel are communicated to form a lifting oil inlet oil path; the lifting oil inlet oil way and the lifting oil return oil way are respectively provided with a pressure gauge, and the lifting oil inlet oil way is also provided with a third pressure sensor.
The application method of the intelligent vertical prestressed reinforcement tensioning equipment for bridge construction comprises a moving state when the intelligent vertical prestressed reinforcement tensioning equipment for bridge construction is displaced and a working state when the vertical prestressed reinforcement is tensioned; when the device is in a moving state, the lifting oil cylinder drives the tensioning adjusting device to be separated from the ground, the whole intelligent vertical prestressed reinforcement tensioning device for bridge construction can be pushed through wheels, and after the intelligent vertical prestressed reinforcement tensioning device is pushed to a tensioning position, the device starts to work; when the hydraulic tensioning device is in a working state, the lifting oil cylinder drives the supporting frame to contact the ground, the connecting sleeve fixedly connects the connecting rod with the vertical prestressed tendon, the tensioning oil cylinder tightens the vertical prestressed tendon, the hydraulic wrench tightens the nut which is in threaded connection with the vertical prestressed tendon, the hydraulic wrench stops when tightening the nut to a set parameter, the connecting sleeve releases the connection between the connecting rod and the vertical prestressed tendon, and the lifting oil cylinder drives the tensioning adjusting device to be separated from the ground, so that the hydraulic tensioning device circulates.
Compared with the prior art, the invention has the advantages that: the invention integrates tensioning and screwing fastening functions at the same time, has the advantages of concentrated functional integration level, high automation operation degree and the like, can set the screwing parameters, and realizes the same standard control on tensioning control.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the structure of embodiment 1 in the moving state.
Fig. 3 is a schematic structural view of the working state of embodiment 1 of the present invention.
Fig. 4 is a schematic structural view of another view of fig. 1.
Fig. 5 is a schematic diagram of the structure of embodiment 2 in the moving state.
Fig. 6 is a schematic structural diagram of the working state of embodiment 2 of the present invention.
Fig. 7 is a schematic structural view of embodiment 2 of the present invention.
Fig. 8 is a schematic structural view of the tension adjusting device according to the present invention.
Fig. 9 is a schematic view of the cross-sectional A-A structure of fig. 8.
Fig. 10 is a schematic structural view of the support frame according to the present invention.
Fig. 11 is a schematic structural view of the hydraulic control system according to the present invention.
Fig. 12 is a schematic structural view of the first electromagnetic directional valve according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1
As shown in fig. 1 to 4, the intelligent vertical prestressed tendon tensioning equipment for bridge construction in this embodiment comprises a frame 2 and a tensioning adjustment device 3 of a lifting oil cylinder 1, wherein one end of the lifting oil cylinder 1 is connected with the frame 2, the telescopic end of the lifting oil cylinder 1 is connected with the tensioning adjustment device 3, and the lifting oil cylinder 1 drives the tensioning adjustment device 3 to linearly displace up and down.
As shown in fig. 8 to 9, the tensioning adjustment device 3 includes a tensioning cylinder 31, a support frame 32, a hydraulic wrench 33, a connecting rod 34 and a wrench socket 35, the support frame 32 supports the tensioning cylinder 31 and is fixedly installed relative to the support frame 32, one end of the connecting rod 34 is connected with the tensioning cylinder 31, the other end of the connecting rod 34 is provided with a connecting sleeve 36 for connecting the vertical prestressed tendons 6, the connecting rod 34 can be driven when the tensioning cylinder 31 stretches and contracts, the wrench socket 35 and the connecting rod 34 are coaxially arranged, the wrench socket 35 is sleeved outside the connecting rod 34 or the connecting sleeve 36, and the hydraulic wrench 33 drives the wrench socket 35 to rotate. The telescopic end of the lifting oil cylinder 1 is connected with a supporting frame 32, and the tensioning oil cylinder 31 and the hydraulic wrench 33 are respectively fixedly installed with the supporting frame 32 and lift along with the supporting frame 32.
As shown in fig. 10, the supporting frame 32 of this embodiment includes two side plates 321, an upper transverse plate 322 and a lower transverse plate 323, the upper transverse plate 322 and the lower transverse plate 323 are disposed up and down, a gap is provided between the upper transverse plate 322 and the lower transverse plate 323, two ends of the upper transverse plate 322 and the lower transverse plate 323 are fixedly connected with the two side plates 321, and through holes 320 are respectively provided on the upper transverse plate 322 and the lower transverse plate 323. The hydraulic wrench 33 is arranged between the upper transverse plate 322 and the lower transverse plate 323, and the supporting frame 32 and the hydraulic wrench 33 are relatively and fixedly arranged; the connecting rod 34 penetrates through the through hole 320 and then is connected with the connecting sleeve 36, and the wrench socket 35 is arranged on the periphery of the connecting sleeve 36. In this embodiment, the wrench socket 35 is sleeved on the periphery of the connecting rod 34 and the connecting sleeve 36.
As shown in fig. 1 to 4, the embodiment further comprises a lifting stabilizing mechanism for stabilizing the vertical linear displacement of the tensioning adjusting device 3, wherein the lifting stabilizing mechanism comprises a guide post 41 and a guide sleeve 42, the guide sleeve 42 is sleeved outside the guide post 41, the guide sleeve 42 slides along the guide post 41, the guide sleeve 42 is fixedly connected with the support frame 32, and the guide post 41 is fixedly connected with the frame 2; alternatively, the guide sleeve 42 is fixedly connected to the frame 2, and the guide post 41 is fixedly connected to the support frame 32. The lifting stabilizing mechanisms are 4 and are symmetrically distributed, the lifting stabilizing mechanisms can stabilize the vertical linear displacement of the tensioning adjusting device 3, and the structure has the advantages of simple structure, stable operation and the like.
The lifting cylinder 1 in this embodiment is an oil cylinder or an air cylinder or a motor.
As shown in fig. 1 to 4, the present embodiment further includes wheels 5, and the wheels 5 are mounted on the bottom of the frame 2. The intelligent vertical prestressed tendon tensioning equipment provided with the wheels 5 and used for bridge construction is convenient to move.
The connection sleeve 36 in this embodiment is a finish-rolled threaded steel nut.
As shown in fig. 11, the present embodiment further includes a hydraulic control system that controls the lift cylinder, the tensioning cylinder, and the hydraulic wrench; the hydraulic control system comprises a hydraulic pump 8, an oil return filter 9, a tensioning oil circuit group for controlling a tensioning oil cylinder, a spanner oil circuit group for controlling a hydraulic spanner and a lifting oil circuit group for controlling a lifting oil cylinder, wherein an oil inlet of the hydraulic pump 8 is communicated with an oil outlet of the oil return filter 9, and oil returns of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with an oil inlet of the oil return filter 9; and oil inlets of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with oil outlets of the hydraulic pump 8.
The tensioning oil circuit group comprises a first electromagnetic directional valve Y1-1, a first double one-way throttle valve Y1-2, a first two-way hydraulic lock Y1-3, a pressure gauge Y1-4 and a first pressure sensor Y1-5; the first electromagnetic directional valve Y1-1 comprises a 1A# oil port, a 1B# oil port, a 1T# oil port and a 1P# oil port; the first double one-way throttle valve Y1-2 comprises an oil inlet throttle passage and an oil return throttle passage; the first bidirectional hydraulic lock Y1-3 comprises an oil inlet channel and an oil return channel; the 1A# oil port, the oil return throttling channel and the oil return channel are communicated to form a tensioning oil return oil way H1; the 1B # oil port, the oil inlet throttling channel and the oil inlet channel are communicated to form a tensioning oil inlet oil path J1; the tensioning oil inlet oil way J1 and the tensioning oil return oil way H1 are respectively provided with a pressure gauge Y1-4, and the tensioning oil inlet oil way J1 is also provided with a first pressure sensor Y1-5.
The wrench oil way group comprises a second electromagnetic reversing valve Y2-1, a second throttle valve Y2-2, a second pressure sensor Y2-4, a wrench oil inlet oil way J2 and a wrench oil return oil way H2; the second electromagnetic directional valve Y2-1 comprises a 2A# oil port, a 2B# oil port, a 2T# oil port and a 2P# oil port; the second double-one-way throttle valve comprises a No. 2 oil inlet throttle passage and a No. 2 oil return throttle passage; the 2A # oil port and the 2# oil return throttling channel are communicated to form a spanner oil return oil path H2; the 2B # oil port and the 2# oil inlet throttling channel are communicated to form a wrench oil inlet oil path J2; and the wrench oil inlet oil way J2 and the wrench oil return oil way H2 are respectively provided with a second pressure sensor Y2-4.
The lifting oil circuit group comprises a third electromagnetic directional valve Y3-1, a third throttle valve Y3-2, a third bidirectional hydraulic lock Y3-3, a third pressure sensor Y3-4, a lifting oil inlet circuit J3, a lifting oil inlet circuit H3 and a third pressure gauge Y3-5; the third electromagnetic directional valve Y3-1 comprises a 3A# oil port, a 3B# oil port, a 3T# oil port and a 3P# oil port; the third throttle valve Y3-2 comprises a 3# oil inlet throttle passage and a 3# oil return throttle passage; the third bidirectional hydraulic lock Y3-3 comprises a 3# oil inlet channel and a 3# oil return channel; the 3A# oil port, the 3# oil return throttling channel and the 3# oil return channel are communicated to form a lifting oil inlet oil way H3; the 3B# oil port, the 3# oil inlet throttling channel and the 3# oil inlet channel are communicated to form a lifting oil inlet oil path J3; the lifting oil inlet oil way J3 and the lifting oil inlet oil way H3 are respectively provided with a third pressure gauge Y3-5, and the lifting oil inlet oil way J3 is also provided with a third pressure sensor Y3-4.
The first electromagnetic directional valve Y1-1, the second electromagnetic directional valve Y2-1 and the third electromagnetic directional valve Y3-1 in this embodiment have the same structure, and are respectively installed at different positions, so that the main functions are basically the same, and for convenience in distinguishing, a number is added before the technical term "electromagnetic directional valve", the structure is shown in fig. 12.
Example 2
As shown in fig. 5 to 9, the intelligent vertical prestressed tendon tensioning equipment for bridge construction in the embodiment comprises a lifting oil cylinder 1, a frame 2 and a tensioning adjusting device 3, wherein the lifting oil cylinder 1 is connected with the frame 2, and the lifting oil cylinder 1 drives the tensioning adjusting device 3 to linearly displace up and down; the tensioning adjustment device 3 comprises a tensioning oil cylinder 31, a supporting frame 32, a hydraulic wrench 33, a connecting rod 34 and a wrench socket 35, wherein the supporting frame 32 supports the tensioning oil cylinder 31 and is fixedly installed relative to the tensioning oil cylinder 31, one end of the connecting rod 34 is connected with a telescopic rod of the tensioning oil cylinder 31, the other end of the connecting rod 34 is provided with a connecting sleeve 36 used for connecting a vertical prestressed tendon 6, the connecting rod 34 can be driven when the tensioning oil cylinder 31 stretches and stretches, the wrench socket 35 and the connecting rod 34 are coaxially arranged, the hydraulic wrench 33 and the supporting frame 32 are fixedly installed relative to each other, and the hydraulic wrench 33 drives the wrench socket 35 to rotate.
As shown in fig. 10, the supporting frame 32 of this embodiment includes two side plates 321, an upper transverse plate 322 and a lower transverse plate 323, the upper transverse plate 322 and the lower transverse plate 323 are disposed up and down, a gap is provided between the upper transverse plate 322 and the lower transverse plate 323, two ends of the upper transverse plate 323 and the lower transverse plate 323 are fixedly connected with the two side plates 321, and through holes 320 are respectively provided on the upper transverse plate 322 and the lower transverse plate 323.
In this embodiment, the wrench socket 35 is sleeved on the periphery of the connecting rod 34 and the connecting sleeve 36.
As shown in fig. 5 to 7, the present embodiment further includes a lifting and stabilizing mechanism for stabilizing the vertical linear displacement of the tension adjusting device 3, the lifting and stabilizing mechanism includes an X-shaped support 45 and a lifting frame 46, the opposite sides of the lifting frame 46 are provided with the X-shaped support 45, the X-shaped support 45 includes at least two support rods 451, and the two support rods 451 are disposed across each other; one end of one supporting rod 451 is pivoted with the frame 2, and the other end is slidably arranged with the lifting frame 46; one end of the other supporting rod 451 is slidably arranged with the frame 2, and the other end of the other supporting rod 451 is pivoted with the lifting frame 46; the support 32 is fixedly connected with the lifting frame 46. The number of the lifting stabilizing mechanisms is 4, the lifting stabilizing mechanisms are symmetrically distributed, and the lifting stabilizing mechanisms can stabilize the vertical linear displacement of the tensioning adjusting device 3. The structure is simple to assemble, sliding friction is adopted between the parts during operation, the friction coefficient is small, the durability is good, and the operation is stable and reliable. The lifting frame 46 has a larger installation area, and is convenient for assembling the tensioning adjustment device 3.
The lifting cylinder 1 in this embodiment is an oil cylinder or an air cylinder or a motor.
In this embodiment, one end of the lifting cylinder 1 is connected with the frame 2, and the other end of the lifting cylinder 1 is connected with the lifting frame 46, so that the lifting frame 46 is driven to drive the tensioning adjustment device 3 to lift.
The sliding installation of the supporting rod 451 and the frame 2 in the present embodiment includes a pulley 47, the frame 2 and the lifting frame 46 are respectively provided with a chute 48, the pulley 47 is pivoted with the supporting rod 451, and the pulley 47 is provided in the chute 48 and slides along the chute 48.
As shown in fig. 5 to 7, the present embodiment further includes wheels 5, and the wheels 5 are mounted on the bottom of the frame 2.
The connection sleeve 36 in this embodiment is a finish-rolled threaded steel nut.
Example 3
The application method of the intelligent vertical prestressed reinforcement tensioning equipment for bridge construction comprises a moving state when the intelligent vertical prestressed reinforcement tensioning equipment for bridge construction is displaced and a working state when the vertical prestressed reinforcement 6 is tensioned; when the device is in a moving state, the lifting oil cylinder 1 drives the tensioning adjusting device 3 to be separated from the ground, the whole intelligent vertical prestressed reinforcement tensioning device for bridge construction can be pushed through the wheels 5, and the working state is started after the intelligent vertical prestressed reinforcement tensioning device is pushed to a tensioning position; in the working state, the lifting cylinder 1 drives the supporting frame 32 to contact the ground, the connecting sleeve 36 fixedly connects the connecting rod 34 with the vertical prestressed tendons 6, the tensioning cylinder 31 stretches the vertical prestressed tendons 6, when the tensioning cylinder 31 is tensioned to a preset parameter, the tensioning control of the tensioning cylinder 31 can detect the cylinder pressure through the hydraulic meter, when the hydraulic meter reaches the preset parameter, the tensioning cylinder 31 stops tensioning, the hydraulic wrench 33 tightens the nut 7 which is in threaded connection with the vertical prestressed tendons 6, the tightening stops when the tightening is carried out to the set parameter, the connecting sleeve 36 releases the connection between the connecting rod 34 and the vertical prestressed tendons 6, and the lifting cylinder 1 drives the tensioning adjusting device 3 to be separated from the ground, so that the cycle is performed.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (6)
1. A vertical prestressing tendons intelligent stretch-draw equipment for bridge construction, characterized by: the device comprises a lifting oil cylinder, a frame and a tensioning adjusting device, wherein the lifting oil cylinder is connected with the frame and drives the tensioning adjusting device to linearly displace up and down; the tensioning adjusting device comprises a tensioning oil cylinder, a supporting frame, a hydraulic wrench, a connecting rod and a wrench sleeve, wherein the supporting frame supports the tensioning oil cylinder and the tensioning oil cylinder to be fixedly installed relatively;
the hydraulic control system is used for controlling the lifting oil cylinder, the tensioning oil cylinder and the hydraulic wrench; the hydraulic control system comprises a hydraulic pump, an oil return filter, a tensioning oil circuit group for controlling a tensioning oil cylinder, a spanner oil circuit group for controlling a hydraulic spanner and a lifting oil circuit group for controlling a lifting oil cylinder, wherein an oil inlet of the hydraulic pump is communicated with an oil outlet of the oil return filter, and oil returns of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with an oil inlet of the oil return filter; the oil inlets of the tensioning oil circuit group, the spanner oil circuit group and the lifting oil circuit group are respectively connected with the oil outlets of the hydraulic pumps;
the lifting stabilizing mechanism is used for stabilizing the vertical linear displacement of the tensioning adjusting device and comprises a guide post and a guide sleeve, the guide sleeve is sleeved outside the guide post, the guide sleeve slides along the guide post, the guide sleeve is fixedly connected with the supporting frame, and the guide post is fixedly connected with the frame; or, the guide sleeve is fixedly connected with the frame, and the guide post is fixedly connected with the support frame;
the lifting stabilizing mechanism comprises an X-shaped supporting frame and a lifting frame, wherein the X-shaped supporting frame is arranged on two opposite sides of the lifting frame, and comprises at least two supporting rods which are arranged in a crossing manner; one end of one supporting rod is pivoted with the frame, and the other end is slidably arranged with the lifting frame; one end of the other supporting rod is slidably arranged with the frame, and the other end of the other supporting rod is pivoted with the lifting frame; the supporting frame is fixedly connected with the lifting frame;
the connecting sleeve is a sleeve nut and is in threaded connection with the connecting rod and the vertical prestressed tendons;
the support frame comprises two side plates, an upper transverse plate and a lower transverse plate, wherein the upper transverse plate and the lower transverse plate are arranged up and down, a gap interval is reserved between the upper transverse plate and the lower transverse plate, two ends of the upper transverse plate and two ends of the lower transverse plate are respectively fixedly connected with the two side plates, and through holes are respectively formed in the upper transverse plate and the lower transverse plate;
the hydraulic wrench is arranged between the upper transverse plate and the lower transverse plate, and the support frame and the hydraulic wrench are relatively and fixedly arranged; the connecting rod penetrates through the through hole and then is connected with the connecting sleeve, and the wrench sleeve is sleeved on the periphery of the connecting rod and the connecting sleeve.
2. The intelligent vertical prestressed tendon tensioning equipment for bridge construction as claimed in claim 1, wherein: one end of the lifting oil cylinder is connected with the frame, and the other end of the lifting oil cylinder is connected with the lifting frame, so that the lifting frame is driven to drive the tensioning adjusting device to lift.
3. The intelligent vertical prestressed tendon tensioning equipment for bridge construction as claimed in claim 1, wherein: the sliding installation of the stay bar and the frame comprises pulleys, the frame and the lifting frame are respectively provided with a sliding groove, the pulleys are pivoted with the stay bar, and the pulleys are arranged in the sliding grooves and extend to slide along the sliding grooves.
4. The intelligent vertical prestressed tendon tensioning equipment for bridge construction as claimed in claim 1, wherein: the bicycle frame also comprises wheels, and the wheels are arranged at the bottom of the bicycle frame.
5. The intelligent vertical prestressed tendon tensioning equipment for bridge construction as claimed in claim 1, wherein: the tensioning oil circuit group comprises a first electromagnetic reversing valve, a first double-unidirectional throttle valve, a first bidirectional hydraulic lock, a pressure gauge and a first pressure sensor; the first electromagnetic directional valve comprises a 1A# oil port, a 1B# oil port, a 1T# oil port and a 1P# oil port; the first double-one-way throttle valve comprises an oil inlet throttle passage and an oil return throttle passage; the first bidirectional hydraulic lock comprises an oil inlet channel and an oil return channel; the 1A # oil port, the oil return throttling channel and the oil return channel are communicated to form a tensioning oil return oil way; the No. 1B oil port, the oil inlet throttling channel and the oil inlet channel are communicated to form a tensioning oil inlet oil way; the tensioning oil inlet oil way and the tensioning oil return oil way are respectively provided with a pressure gauge, and the tensioning oil inlet oil way is also provided with a first pressure sensor;
the wrench oil way group comprises a second electromagnetic reversing valve, a second throttle valve, a second pressure sensor, a wrench oil inlet oil way and a wrench oil return oil way; the second electromagnetic directional valve comprises a 2A# oil port, a 2B# oil port, a 2T# oil port and a 2P# oil port; the second double-one-way throttle valve comprises a No. 2 oil inlet throttle passage and a No. 2 oil return throttle passage; the 2A # oil port and the 2# oil return throttling channel are communicated to form a spanner oil return path; the 2B # oil port and the 2# oil inlet throttling channel are communicated to form a wrench oil inlet oil path; the wrench oil inlet oil way and the wrench oil return oil way are respectively provided with a second pressure sensor;
the lifting oil circuit group comprises a third electromagnetic reversing valve, a third throttle valve, a third bidirectional hydraulic lock, a third pressure sensor, a lifting oil inlet circuit and a lifting oil return circuit; the third electromagnetic directional valve comprises a 3A# oil port, a 3B# oil port, a 3T# oil port and a 3P# oil port; the third throttle valve comprises a 3# oil inlet throttle passage and a 3# oil return throttle passage; the third bidirectional hydraulic lock comprises a 3# oil inlet channel and a 3# oil return channel; the 3A# oil port, the 3# oil return throttling channel and the 3# oil return channel are communicated to form a lifting oil return oil path; the 3B# oil port, the 3# oil inlet throttling channel and the 3# oil inlet channel are communicated to form a lifting oil inlet oil path; the lifting oil inlet oil way and the lifting oil return oil way are respectively provided with a pressure gauge, and the lifting oil inlet oil way is also provided with a third pressure sensor.
6. A method for using the intelligent vertical prestressed tendon tensioning equipment for bridge construction according to any one of claims 1-5, which is characterized in that: the intelligent vertical prestressed tendon tensioning device also comprises a moving state when the intelligent vertical prestressed tendon tensioning device for bridge construction is in displacement and a working state when the vertical prestressed tendon is tensioned; when the device is in a moving state, the lifting oil cylinder drives the tensioning adjusting device to be separated from the ground, the whole intelligent vertical prestressed reinforcement tensioning device for bridge construction can be pushed through wheels, and after the intelligent vertical prestressed reinforcement tensioning device is pushed to a tensioning position, the device starts to work; when the hydraulic tensioning device is in a working state, the lifting oil cylinder drives the supporting frame to contact the ground, the connecting sleeve fixedly connects the connecting rod with the vertical prestressed tendon, the tensioning oil cylinder tightens the vertical prestressed tendon, the hydraulic wrench tightens the nut which is in threaded connection with the vertical prestressed tendon, the hydraulic wrench stops when tightening the nut to a set parameter, the connecting sleeve releases the connection between the connecting rod and the vertical prestressed tendon, and the lifting oil cylinder drives the tensioning adjusting device to be separated from the ground, so that the hydraulic tensioning device circulates.
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| CN201710043956.3A CN106758848B (en) | 2017-01-19 | 2017-01-19 | Intelligent vertical prestressed reinforcement tensioning equipment for bridge construction and use method |
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| CN108194769B (en) * | 2017-12-21 | 2019-07-16 | 杭州交通工程监理咨询有限公司 | A kind of vertical prestressing bar intelligent tensioning equipment for bridge construction |
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