CN213387599U - Lifting device of tensioning jack - Google Patents
Lifting device of tensioning jack Download PDFInfo
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- CN213387599U CN213387599U CN202022070200.8U CN202022070200U CN213387599U CN 213387599 U CN213387599 U CN 213387599U CN 202022070200 U CN202022070200 U CN 202022070200U CN 213387599 U CN213387599 U CN 213387599U
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Abstract
The utility model provides a jack-draw lifting device, including braced frame, movable frame, drive unit and a pad unit, braced frame has the installation position, the installation position extends along jack-draw lifting device's direction of height, movable frame sets up in the installation position, be provided with first guide rail set spare between movable frame and the braced frame, first guide rail set spare extends along the direction of height, the first guide rail set spare of movable frame accessible stretches out or the withdrawal installation position, drive unit connects between braced frame and movable frame, drive unit drive movable frame slides along the extending direction of first guide rail set spare, a pad unit mounting is at movable frame's top, a pad unit has the support position, this jack-draw lifting device has a pad height-adjustable and a pad height-adjustable convenient advantage.
Description
Technical Field
The utility model belongs to the technical field of bridge construction auxiliary assembly technique and specifically relates to a stretch-draw jack lifting devices is related to.
Background
The tensioning jack is mainly used for pre-stressed tensioning of steel strands in a cast-in-place box girder, and needs to be heightened and fixed during tensioning operation of the tensioning jack. At present, the lifting and fixing modes of a tensioning jack are mainly as follows: and cutting, erecting and welding the steel pipe at a construction site to form a steel pipe support, and then fixing the tensioning jack on the steel pipe support to heighten and fix the tensioning jack.
However, the method of using the welded steel pipe bracket to heighten and reinforce the tensioning jack has the following disadvantages:
firstly, the height of a support pad of the steel pipe support is not adjustable, so that steel strands at different positions need to be independently manufactured into a steel pipe support to support a tensioning jack;
second, steel pipe bracket's a pad height is not adjustable, when leading to there being the difference in height between stretch-draw jack and the steel strand wires, only can be through adding stopper stone or billet in steel pipe bracket bottom in order to carry out the bed hedgehopping to steel pipe bracket, and this process needs a plurality of operation personnel simultaneous working, and need constantly adjust steel pipe bracket's bed hedgehopping height, has both increased operation personnel's intensity of labour, is difficult to guarantee again that stone or billet carry out the stability when filling up to steel pipe bracket.
Disclosure of Invention
In order to solve the above problems, the main object of the present invention is to provide a lifting device for a tensioning jack, which is height-adjustable and convenient.
In order to realize the utility model discloses a main objective, the utility model provides a jack-draw lifting device, wherein, including braced frame, movable frame, drive unit and a pad unit, braced frame has the installation position, the installation position extends along jack-draw lifting device's direction of height, movable frame sets up in the installation position, be provided with first guide rail set spare between movable frame and the braced frame, first guide rail set spare extends along the direction of height, the first guide rail set spare of movable frame accessible stretches out or the withdrawal installation position, drive unit connects between braced frame and movable frame, drive unit drive movable frame slides along the extending direction of first guide rail set spare, prop up the top that the pad unit was installed at movable frame, a pad unit has the support position.
Therefore, the supporting unit supports and heightens the tensioning jack through the supporting position of the supporting unit and positions the tensioning jack, and the driving unit is used for adjusting the height of the movable frame extending out of the mounting position to adjust the height of the supporting unit on the movable frame. Through the structural design of the lifting device of the tensioning jack, workers can adjust the height position of the tensioning jack through the driving unit, and the height position adjustment of the tensioning jack can be completed by one person, so that the difficulty and the working strength of the workers in the position adjustment of the tensioning jack are reduced, and the number of the workers required in the position adjustment process of the tensioning jack can be reduced; in addition, the tensioning jack lifting device can support and fix tensioning jacks at different working positions, and has higher use flexibility; furthermore, the position height of the tensioning jack is adjusted through a mechanism of the tensioning jack lifting device, and is not adjusted through a support cushion stone or a wood block of the tensioning jack lifting device, so that the stability of the tensioning jack lifting device in supporting the tensioning jack and the stability of the tensioning jack in operation can be ensured.
One preferred scheme is that, the support pad unit includes fixed bolster and movable support, fixed bolster and movable frame fixed connection, the support position sets up on the movable support, along the extending direction who supports the position, the first end and the fixed bolster of movable support are articulated, the second end of movable support is provided with first connecting portion, fixed bolster is provided with a plurality of second connecting portions in the second end department of movable support, a plurality of second connecting portions distribute around the axis of rotation of movable support, first connecting portion are connected with the cooperation of a plurality of second connecting portions.
Therefore, through the structural design of the supporting and supporting unit, the supporting and supporting unit can adjust the inclination angle of the tensioning jack according to the inclination angle of the tensioned steel strand, and the application range of the tensioning jack lifting device is widened.
Another preferred scheme is that the supporting pad unit comprises two positioning blocks which are symmetrically arranged, the positioning blocks are arranged on the movable frame, supporting and positioning surfaces are arranged on the positioning blocks, the supporting and positioning surfaces of the two positioning blocks are oppositely arranged, and a supporting position is formed between the supporting and positioning surfaces of the two positioning blocks.
Therefore, the support pad unit can be suitable for the tensioning jacks with different sizes through the structural design of the support pad unit, and the application range of the tensioning jack lifting device is widened.
The support pad unit further comprises a second guide rail assembly, the second guide rail assembly is installed on the movable frame, the extending direction of the second guide rail assembly is perpendicular to the height direction, the two positioning blocks are distributed along the extending direction of the second guide rail assembly, at least one positioning block can slide relative to the movable frame through the second guide rail assembly, and the distance between the support positioning surfaces of the two positioning blocks is adjustable.
Therefore, the distance between the two positioning blocks is adjustable through the structural design, and the support cushion unit can be better suitable for tensioning jacks with different sizes.
According to a further scheme, the support pad unit further comprises a driving mechanism, the driving tail end of the driving mechanism is connected with at least one positioning block, and the driving mechanism is used for adjusting the distance between the supporting and positioning surfaces of the two positioning blocks.
It can be seen from above that the setting actuating mechanism adjusts the convenience that can improve locating piece position control to the interval between two locating pieces.
Another preferred scheme is that the driving unit is a chain block, an air cylinder, a hydraulic cylinder or an electric push rod.
Therefore, the type of the driving unit can be adjusted according to conditions such as use requirements, operation space and production cost, and the structure of the lifting device of the tensioning jack can be more flexible and changeable.
The further scheme is that the tensioning jack lifting device further comprises a fixing piece, the fixing piece is installed on the supporting pad unit, and a fixing position is formed between the fixing piece and the supporting position.
Therefore, the fixing piece is used for being matched with the supporting pad unit to reliably fix the tensioning jack placed in the supporting position, and the tensioning jack is prevented from sliding in the operation process.
In a further development, the support sites extend obliquely to the height direction.
Therefore, the support positions are inclined to the height direction, and the tensioning jack can better tension the steel strand.
The further proposal is that a baffle is arranged in the support position and is positioned at the lower part of the support position.
It is from top to bottom visible, because the support position is the slope setting, the setting of baffle can carry on spacingly to the jack-draw in the support position, prevents that the jack-draw from a pad unit landing.
According to a further scheme, the tensioning jack lifting device further comprises a wheel set, the wheel set comprises a plurality of moving wheels, and the moving wheels are all installed at the bottom of the supporting frame.
Therefore, the wheel set is arranged at the bottom of the supporting frame, so that the lifting device of the tensioning jack can be moved more conveniently and more conveniently in a labor-saving manner.
Drawings
Fig. 1 is a first state structure diagram of a first embodiment of a jacking device of the present invention.
Fig. 2 is a schematic structural view of the first embodiment of the jack-up device according to the present invention in the second state.
Fig. 3 is a reference view showing a state of use of the first embodiment of the jack-tension lifting device of the present invention.
Fig. 4 is a schematic structural view of a second embodiment of the jack-down lifting device of the present invention, with some components omitted.
Fig. 5 is a schematic structural view of a third embodiment of the jack-up device of the present invention, with some components omitted.
Fig. 6 is a schematic structural view of a fourth embodiment of a jack-up device according to the present invention, with some components omitted.
Fig. 7 is a schematic structural view of a fifth embodiment of a jack-up device according to the present invention, with some components omitted.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
First embodiment of the jack-up device:
the jacking device 100 is used for positioning, supporting, fixing and lifting the jack 101, so that the jack 101 can stably and reliably tension the steel strand 103 on the cast-in-place box girder 102. Referring to fig. 1 to 3, the tension jack lifting device 100 includes a support frame 11, a movable frame 12, a first guide rail assembly 13, a driving unit 14, a pad unit 15, and a wheel set 16.
The outer contour of the support frame 11 is substantially rectangular parallelepiped, and the support frame 11 is preferably formed by welding a plurality of square steel pipes, so that the support frame 11 is more simple and convenient to manufacture. The support frame 11 has a mounting position 111 in the middle thereof, and the mounting position 111 extends in the height direction of the jacking device 100 and penetrates the support frame 11.
The outer contour of the movable frame 12 is substantially rectangular, and the movable frame 12 is preferably formed by welding a plurality of square steel pipes, so that the movable frame 12 is simpler and more convenient to manufacture. The movable frame 12 is disposed in the installation position 111, and a placement platform 121 is disposed on the top of the movable frame 12.
The number of first track assemblies 13 is preferably four, each set of first track assemblies 13 is connected between the support frame 11 and the movable frame 12, and the first track assemblies 13 are preferably located in the mounting locations 111. Specifically, the first rail assembly 13 includes a first rail 131 and a first slider 132, the first rail 131 extends in the height direction of the tension jack lifting device 100, and the first rail 131 is fixedly installed on the support frame 11; the first slider 132 is mounted on the movable frame 12, and the first slider 132 is slidably connected to the first guide rail 131 in the extending direction of the first guide rail 131 so that the movable frame 12 can be extended or retracted to the mounting position 111 in the height direction of the tension jack lifting device 100.
In the present embodiment, the driving unit 14 is preferably an electric push rod. The electric push rods may be extended or shortened in the height direction of the jacking device 100, and the number of the electric push rods is preferably two, and the two electric push rods are arranged in mirror symmetry. The electric push rod is arranged at the bottom of the supporting frame 11, the cylinder body of the electric push rod is fixedly connected with the supporting frame 11, and the rod body of the electric push rod is fixedly connected with the bottom of the movable frame 12, so that the electric push rod can drive the movable frame 12 to slide along the extending direction of the first guide rail 131, and the movable frame 12 extends out of or retracts into the mounting position 111. Wherein, the electric putter preferably adopts the direct current formula electric putter, makes can supply power for the electric putter through the battery, thereby avoids additionally setting up cable or trachea to make drive unit 14 carry out work.
Of course, the drive unit 14 may alternatively be provided as a pneumatic cylinder, a hydraulic cylinder or a chain block. When the driving unit 14 is a chain block, a first connecting pipe 112 may be disposed at the top of the supporting frame 11, a second connecting pipe 122 may be disposed at the bottom of the movable frame 12, and the placing platform 121 at the top of the movable frame 12 may be disposed above the first connecting pipe 112; when the chain block is installed, the hook is hung on the first connection pipe 112, and the hook is hooked on the second connection pipe 122, so that the chain block can control the movable frame 12 to extend out of or retract into the installation position 111 in the height direction of the jacking device 100.
The supporting unit 15 is fixedly installed on the placing platform 121 of the movable frame 12, the supporting unit 15 has a supporting position 151, and the supporting position 151 is used for supporting and positioning the tensioning jack 101 so as to prevent the tensioning jack 101 from shaking in the tensioning operation process. The cross section of the supporting position 151 may be semi-arc or minor arc.
In order to adapt and match the steel strands 103 on the cast-in-place box girder 102, the extension direction of the support sites 151 may be set to be oblique to the height direction of the jacking device 100. Further, a baffle 152 may be disposed in the support position 151, and the baffle 152 may be located at a lower position of the support position 151, for example, the baffle 152 may be disposed at the lowest position of the support position 151; or the baffle 152 is disposed between the middle and the bottom of the supporting position 151 in the height direction of the jacking device 100 according to the size of the jacking jack 101. Since the support position 151 is disposed to be inclined, the baffle 152 is disposed in the support position 151, so that the baffle 152 can limit the position of the jack 101 in the support position 151, thereby preventing the jack 101 from sliding off the support unit 15.
The wheel set 16 includes a plurality of moving wheels 161, and the plurality of moving wheels 161 are each installed at the bottom of the support frame 11. The wheel set 16 is arranged at the bottom of the supporting frame 11, so that the movement of the tensioning jack lifting device 100 is more convenient and labor-saving.
In conclusion, through the structural design of the lifting device of the tensioning jack, the height position of the tensioning jack can be adjusted by a worker through the driving unit, and the height position of the tensioning jack can be adjusted by a single person, so that the difficulty and the working strength of the worker for adjusting the position of the tensioning jack are reduced, and the number of workers required in the position adjusting process of the tensioning jack can be reduced; in addition, the tensioning jack lifting device can support and fix tensioning jacks at different working positions, and has higher use flexibility; furthermore, the position height of the tensioning jack is adjusted through a mechanism of the tensioning jack lifting device, and is not adjusted through a support cushion stone or a wood block of the tensioning jack lifting device, so that the stability of the tensioning jack lifting device in supporting the tensioning jack and the stability of the tensioning jack in operation can be ensured.
Second embodiment of the jack-up device:
with reference to fig. 4, the present embodiment is different from the first embodiment of the jacking device in that:
in this embodiment, the jacking device further includes a fixing member 2121 mounted on the support unit 22, and a fixing position is formed between the fixing member 2121 and the supporting position 221. Preferably, the fixing member 2121 employs a flexible band. The fixing member 2121 is used to cooperate with the support unit 22 to reliably fix the tensioning jack placed in the support position 221, so as to prevent the tensioning jack from sliding during the operation.
A third embodiment of the jack-up device:
with reference to fig. 5, the present embodiment is different from the above embodiments in the structure of the support pad unit, specifically, in the present embodiment, the support pad unit 3 includes a fixed bracket 31 and a movable bracket 32, the fixed bracket 31 is fixedly connected to the placing platform 301 on the top of the movable frame 30, the supporting position 321 is disposed on the movable bracket 32, along the extending direction of the supporting position 321, a first end of the movable bracket 32 is hinged to the fixed bracket 31, a second end of the movable bracket 32 is provided with a first connecting portion, the fixed bracket 31 is provided with a plurality of second connecting portions 311 at the second end of the movable bracket 32, the plurality of second connecting portions 311 are distributed around the rotation axis of the movable bracket 32, and the first connecting portion is connected to one of the plurality of second connecting portions 311 in a matching manner. The first connecting portion is preferably a threaded hole, the second connecting portion 311 is preferably a threaded hole or a through hole, when the first connecting portion is connected with the second connecting portion 311 in a matched mode, the first connecting portion and one of the second connecting portions 311 are coaxially arranged, and then the first connecting portion is in threaded connection with the second connecting portion 311 through a bolt. Through the structural design to the support cushion unit 3, the support cushion unit 3 can adjust the inclination angle of the tensioning jack according to the inclination angle of the tensioned steel strand, so that the application range of the tensioning jack lifting device is widened.
Fourth embodiment of the jack-up device:
with reference to fig. 6, the difference between the present embodiment and the above embodiments lies in the structure of the support pad unit, specifically, in the present embodiment, the support pad unit 41 includes two positioning blocks 411 arranged in mirror symmetry, the positioning blocks 411 are installed on the placing platform 421 of the movable frame 42, the positioning blocks 411 are provided with supporting and positioning surfaces 412, the supporting and positioning surfaces 412 of the two positioning blocks 411 are arranged opposite to each other, and a supporting position 410 is formed between the supporting and positioning surfaces 412 of the two positioning blocks 411. Through the structural design of the support pad unit 41, the support pad unit 41 can be suitable for the tensioning jacks with different sizes, so that the application range of the tensioning jack lifting device is widened.
Fifth embodiment of the jack-up device:
with reference to fig. 7, the present embodiment is different from the fourth embodiment of the jacking device in that:
in this embodiment, the support pad unit further includes a second rail assembly 51, an extending direction of the second rail assembly 51 is perpendicular to a height direction of the lifting device of the tensioning jack, the two positioning blocks 52 are distributed along the extending direction of the second rail assembly 51, and at least one positioning block 52 can slide relative to the placing platform 531 of the movable frame 53 through the second rail assembly 51, so that an interval between the supporting and positioning surfaces 521 of the two positioning blocks 52 is adjustable. By arranging the second guide rail assembly 51 and connecting the positioning block 52 with the second guide rail assembly 51 in a clamping and sliding manner, the support pad unit can support and position tensioning jacks with different sizes.
Further, the support pad unit may further include a driving mechanism, a driving end of the driving mechanism is connected to at least one positioning block 52, the driving mechanism is used to adjust a distance between the supporting and positioning surfaces 521 of the two positioning blocks 52, and the driving mechanism is arranged to adjust the distance between the two positioning blocks 52, so that convenience in adjusting the positions of the positioning blocks 52 can be improved.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. A jack-down apparatus, comprising:
a support frame having a mounting location extending along a height direction of the jacking device;
the movable frame is arranged in the installation position, a first guide rail assembly is arranged between the movable frame and the supporting frame, the first guide rail assembly extends along the height direction, and the movable frame can extend out of or retract into the installation position through the first guide rail assembly;
the driving unit is connected between the supporting frame and the movable frame and drives the movable frame to slide along the extending direction of the first guide rail assembly;
the supporting cushion unit is installed at the top of the movable frame and is provided with a supporting position.
2. A jacking device as claimed in claim 1, wherein:
the bolster unit includes:
the fixed support is fixedly connected with the movable frame;
the movable support, support the position set up in on the movable support, follow the extending direction who supports the position, the first end of movable support with the fixed bolster is articulated, the second end of movable support is provided with first connecting portion, the fixed bolster is in the second end department of movable support is provided with a plurality of second connecting portions, and is a plurality of the second connecting portion wind movable support's axis of rotation distributes, first connecting portion and a plurality of one cooperation in the second connecting portion is connected.
3. A jacking device as claimed in claim 1, wherein:
the support pad unit comprises two positioning blocks which are symmetrically arranged, the positioning blocks are arranged on the movable frame, supporting and positioning surfaces are arranged on the positioning blocks, the supporting and positioning surfaces of the two positioning blocks are oppositely arranged, and the supporting and positioning positions are formed between the supporting and positioning surfaces of the two positioning blocks.
4. A jacking jack lifting device as claimed in claim 3, wherein:
the support pad unit further comprises a second guide rail assembly, the second guide rail assembly is installed on the movable frame, the extending direction of the second guide rail assembly is perpendicular to the height direction, the two positioning blocks are distributed along the extending direction of the second guide rail assembly, at least one positioning block can pass through the second guide rail assembly and slide relative to the movable frame, and the distance between the two positioning blocks and the support positioning surface is adjustable.
5. A jacking device as claimed in claim 4, wherein:
the support pad unit further comprises a driving mechanism, the driving tail end of the driving mechanism is connected with at least one positioning block, and the driving mechanism is used for adjusting the distance between the supporting and positioning surfaces of the two positioning blocks.
6. A jacking device as claimed in claim 1, wherein:
the driving unit is a chain block, an air cylinder, a hydraulic cylinder or an electric push rod.
7. A jacking device as claimed in any one of claims 1 to 6, wherein:
the tensioning jack lifting device further comprises a fixing piece, the fixing piece is installed on the supporting pad unit, and a fixing position is formed between the fixing piece and the supporting position.
8. A jacking device as claimed in any one of claims 1 to 6, wherein:
the extending direction of the supporting position is inclined to the height direction.
9. A jacking device as claimed in claim 8, wherein:
and a baffle is arranged in the supporting position and is positioned at the lower part of the supporting position.
10. A jacking device as claimed in any one of claims 1 to 6, wherein:
the tensioning jack lifting device further comprises a wheel set, wherein the wheel set comprises a plurality of moving wheels, and the moving wheels are mounted at the bottom of the supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022070200.8U CN213387599U (en) | 2020-09-18 | 2020-09-18 | Lifting device of tensioning jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022070200.8U CN213387599U (en) | 2020-09-18 | 2020-09-18 | Lifting device of tensioning jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213387599U true CN213387599U (en) | 2021-06-08 |
Family
ID=76180784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022070200.8U Active CN213387599U (en) | 2020-09-18 | 2020-09-18 | Lifting device of tensioning jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213387599U (en) |
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2020
- 2020-09-18 CN CN202022070200.8U patent/CN213387599U/en active Active
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