CN111470434A - Rock wall anchor rope prestressing force tensioning jack installation device - Google Patents
Rock wall anchor rope prestressing force tensioning jack installation device Download PDFInfo
- Publication number
- CN111470434A CN111470434A CN202010363193.2A CN202010363193A CN111470434A CN 111470434 A CN111470434 A CN 111470434A CN 202010363193 A CN202010363193 A CN 202010363193A CN 111470434 A CN111470434 A CN 111470434A
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- guide rail
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- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 92
- 239000010959 steel Substances 0.000 claims description 92
- 239000000725 suspension Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a rock wall anchor cable prestress tensioning jack mounting device which comprises a device base, a frame body, a cantilever, a hoisting sliding device and a locking device, wherein the frame body is mounted on the device base, a guide rail horizontally arranged is mounted on the frame body, the cantilever is slidably mounted on the guide rail, the cantilever can extend out from one end of the guide rail along the guide rail, a slide rail is arranged on the outer side of the cantilever along the length direction of the cantilever, the hoisting sliding device for hoisting a jack is slidably mounted on the slide rail, and the locking device comprises a support which is mounted on a far-end rock wall and used as a cantilever hanging fulcrum, and a locking piece which is mounted on a cantilever hanging end and the support and used for connecting and fixing the cantilever hanging end and the support; the device reduces the installation difficulty of the jack, improves the installation efficiency, reduces the safety risk, adapts to various installation environments, reduces the utilization rate of mechanical equipment such as a crane and the like, improves the resource utilization rate, and is simple in structure, convenient to operate, safe and reliable.
Description
Technical Field
The invention relates to a rock wall anchor cable prestress tensioning jack mounting device.
Background
With the rapid development of national infrastructure and the gradual increase of the treatment strength of geological disasters, the treatment of various geological problems through rock and soil reinforcement is increasingly important. In the field of rock-soil reinforcement, anchor cable reinforcement is an important method for rock-soil reinforcement, and the process is mature, so that the anchor cable reinforcement is widely applied to reinforcement of various rock-soil bodies. In the anchor cable reinforcing construction, prestress tensioning is an important process, and the tensioning effect directly influences the reinforcing quality. At present, a jack of a key device for prestress tensioning is large and heavy, and can be smoothly installed by means of machinery. Particularly, the prestressed tensioning of the rock wall anchor cable is carried out by adopting a mode of erecting a platform, and the jack needs to be hung by a crane to complete installation. The installation mode has the advantages of high construction difficulty, low installation efficiency, high safety risk, low mechanical use efficiency and low resource utilization rate. Therefore, how to reduce the installation difficulty of the rock wall anchor cable prestress tensioning jack, improve the installation efficiency, reduce the safety risk, reduce the utilization rate of mechanical equipment such as a crane and the like, fully utilize resources, ensure that the rock wall anchor cable prestress tensioning jack is installed fast, well, safe and economic, and is an urgent problem to be solved in the rock wall anchor cable prestress tensioning construction process.
Disclosure of Invention
The rock wall anchor cable prestress tensioning jack mounting device solves the defects of the prior art, improves the mounting difficulty, reduces the safety risk, is suitable for various mounting environments, reduces the utilization rate of mechanical equipment such as a crane and the like, fully utilizes resources, and ensures the mounting of the rock wall anchor cable prestress tensioning jack.
In order to achieve the above technical objects, the present invention employs the following embodiments,
a rock wall anchor cable prestress tensioning jack installation device comprises a device base, a frame body, a cantilever, a hoisting sliding device and a locking device, wherein the frame body is installed on the device base, a guide rail horizontally arranged is installed on the frame body, the cantilever is installed on the guide rail in a sliding mode, the cantilever can extend out from one end of the guide rail along the guide rail, a slide rail is arranged on the outer side of the cantilever along the length direction of the cantilever, the hoisting sliding device used for hoisting the jack is installed on the slide rail in a sliding mode, the locking device comprises a support which is installed on a far-end rock wall and used as a cantilever hanging fulcrum, and a locking piece which is installed on a cantilever hanging end and the support and used for connecting and fixing the cantilever hanging end and the support, the locking piece comprises a barb which is installed at the bottom of the cantilever and close to the end of the cantilever, a pawl which is installed at the top of the support, the cantilever and the guide rail are provided with a tolerance in the vertical direction, so that the suspension end of the cantilever after stretching out can rotate upwards for a distance along the vertical direction, the height of the suspension end of the cantilever after rotating from the top of the support is greater than the total height of the inverted tooth and the barb, in an initial state, the cantilever reaches the position of a rock wall, the spring is supported on the support, so that the cantilever is supported, the barb is locked into the inverted tooth, after a heavy object is suspended on the cantilever, the spring presses downwards, the barb sinks and locked with the inverted tooth, in an unlocking state, the heavy object is unloaded, the suspension end of the cantilever jacks under the elastic action of the spring, and the barb and the inverted tooth in a locking state are disengaged.
In this embodiment, the bottom of the device base is provided with a universal caster serving as a traveling mechanism in a moving state and a supporting leg for supporting and fixing in a working state, and the supporting leg is in threaded connection with the bottom of the device base.
In this embodiment, the base of the device is provided with a plurality of concrete weights arranged in the opposite direction to the sliding direction of the cantilever.
In this embodiment, the guide rail of support body is the I-steel, the cantilever comprises two channel-section steel openings towards the outside, and be equipped with between two channel-section steels with I-steel web thickness assorted interval, two channel-section steels are through the C shaped steel welded connection at its top of welding, the space that C shaped steel and channel-section steel top formed and the big or small phase-match of I-steel flange plate, the outer one side of channel-section steel open slot forms the slide rail, follow length direction and correspond to lay a plurality of pinholes that are used for injecing cantilever extension length on I-steel and the channel-section steel.
In this embodiment, hoist and mount slider includes U shaped steel groove, gyro wheel and chain block, two sets of gyro wheels are installed to the symmetry on the board of U shaped steel inslot both sides, chain block stiff end is installed on U shaped steel groove, the interval and the two channel-section steel interval phase-matches of U shaped steel groove both sides gyro wheel, gyro wheel roll mounting is in the opening of channel-section steel, thereby makes chain block can move on the cantilever.
In this embodiment, the cantilever is provided with two springs side by side, and the bottoms of the springs are connected through a steel plate.
Due to the adoption of the structure, the invention has the following beneficial effects: the universal caster wheels of the device facilitate the free movement of the device. The supporting leg fixing device ensures the operation safety. The cantilever can be adjusted to enlarge the working radius. The counterweight can balance the operation load. The hoisting sliding device can hoist the movable jack, and manual carrying is avoided. The locking device can ensure that the fulcrum connection is reliable and the operation is safe during the operation of the device, and the device can be manually unlocked or automatically unlocked after the construction is finished. To sum up, this device has reduced the jack installation degree of difficulty, improves the installation effectiveness, reduces safe risk, adapts to multiple installation environment, reduces mechanical equipment's such as crane the rate of utilization, improves resource utilization, is simple structure, convenient operation, safe and reliable.
Drawings
FIG. 1 is a front view of a base of the device;
FIG. 2 is a side view of the base of the device;
FIG. 3 is a front view of the device holder;
FIG. 4 is a side view of the device holder;
FIG. 5 is a front view of the cantilever;
FIG. 6 is a cross-sectional view of the cantilever arm;
FIG. 7 is a cross-sectional view of the cantilever tip;
FIG. 8 is a diagram of the joint of the cantilever and the main beam;
FIG. 9 is a front view of the hoist slide;
FIG. 10 is a side view of a lifting slide;
FIG. 11 is a view showing a state where the lock device is disengaged;
FIG. 12 is a view showing a locking state of the locking device;
FIG. 13 is a front view of the locking device bracket;
FIG. 14 is a cross-sectional view of the spring end of the locking device;
FIG. 15 is a barb end elevational view of the locking device;
FIG. 16 is a front view of a rock wall anchor cable prestress tensioning jack mounting device;
FIG. 17 is a side view of a rock wall anchor cable pre-stressed tensioning jack mounting device;
fig. 18 is an operation schematic diagram of the rock wall anchor cable prestress tensioning jack installation device.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments of the present invention without creative efforts, are also within the scope of the present invention.
It should be noted that all directional indications "up", "down", "left", "right", "top", "bottom", "vertical", "horizontal", etc.) in the description of the embodiments of the present invention are based on the relative positional relationship between the components of the embodiments when in the posture of the drawings, and are used only for describing the present invention and simplifying the description, but do not indicate or imply that the components referred to must have a specific orientation. When the attitude of other embodiments changes, the directional indication changes accordingly. Furthermore, the use of the terms first, second, etc. in the description are used for descriptive purposes only and are not intended to indicate or imply relative importance.
Example (b):
as shown in fig. 16, 17 and 18, the invention provides a rock wall anchor cable prestress tensioning jack installation device, which comprises a device base 1, a frame body 7, a cantilever 12, a hoisting sliding device 20 and a locking device 26.
As shown in fig. 1 and 2, the device base 1 comprises universal casters 2, a rectangular square steel platform 3, supporting legs 4, a sleeve 5 and a concrete counterweight 6, the device base 1 is used for bearing self load and operation load of the device, the rectangular square steel platform 3 is formed by welding square steel pipes with the length of × and the width of × and the thickness of 100 × 100 × mm, 9 (7 of the length of 1.5m and 2 of the length of 3 m) in total, the universal casters 2 are installed at the bottom of the rectangular square steel platform 3, the diameter of the universal casters 2 is 150mm, the finished products are adopted, 4 are manufactured and welded with the rectangular square steel platform 3 for moving the device, the supporting legs 4 are manufactured by welding steel plates with the diameter of phi 38, the sleeve 5 is welded on the rectangular square steel platform 3, the sleeve 5 is matched with the supporting legs 4 in a threaded manner, the sleeve 5 is manufactured by inner wire steel pipes with the inner diameter of 38mm, the wall thickness of 5mm and the height of 100mm, 4 are manufactured and 4 are connected with the supporting legs in the sleeve 5 by threads, the concrete platform, the supporting legs are connected with the square steel platform, the concrete counterweight, the device is manufactured by a multiple screw rod capable of supporting legs capable of supporting 3, the concrete counterweight capable of supporting legs capable of supporting weight of supporting 3, the concrete counterweight capable of balancing load of balancing 0.3876, the device.
As shown in fig. 3 and 4, the frame body 7 includes batter posts 8, beams 9 and main beams 10, and mainly bears the operation load of the device, the batter posts 8 are made of square steel pipes of 100 × 100 × 5mm, 4 in total, two batter posts 8 are symmetrically installed on two sides of the frame body 7 by taking the central axis of the rectangular square steel platform 3 as a symmetry axis to form a group, a single batter post 8 is 2m long, the batter post 8 is used for transferring the vertical load of the device, the bottom of the batter post 8 is welded and fixed with the base 1, the beams 9 are made of square steel pipes of 100 × 100 × 5mm, 2 in total, a single is 0.5m long, the beams 9 are welded on the tops of two batter posts in the same group, so that the two batter posts 8 are connected into a whole, the tops of the beams 9 are used for supporting the main beam 10, the main beams 10 are made of 16# i-section steel, 1 in total, 3.1m long, the main beam 10 is fixed on the central axis beams 9 along the rectangular square steel platform 3, the main beam 10 is the supporting end of the main beam 12 and is also used as a guide rail of the cantilever 12, the cantilever is also used as a guide rail, the cantilever 12, the cantilever is arranged at a distance between the bottom of a first web plate 10, and a first end of a.
As shown in fig. 5, 6, 7 and 8, a cantilever 12 comprises channel steel 13, C-shaped steel 14, steel sheets 15, steel rings 16, a pin bolt 17 and bolts 18, the cantilever 12 is installed on a frame main beam 10 and used for bearing and transmitting operation loads, the cantilever 12 extends and retracts within a certain range by taking the main beam 10 as a track to adjust the operation radius, the cantilever 12 is formed by assembling two 3.9 mm long 12.6# channel steel 13, when the two channel steel 13 are assembled, openings of the two channel steel 13 face the two outer sides, a distance matched with the thickness of a web plate of the main beam is arranged between the two channel steel 13, a plurality of second round holes 19 which are 20mm in diameter and matched with a first round hole 11 on the main beam 10 are arranged on the web plate of the channel steel 13 along the length direction of the channel steel 13, the distance between the adjacent second round holes 19 is 500mm, the second round holes 19 are arranged for 4, the upper side edges of the two channel steel 13 are welded by using the C-shaped steel 14, a space formed by welding the C-shaped steel sheets 14 after the C-shaped steel 14 and the channel steel 13 are welded, the steel sheets 14 are matched with the flange plate of the main beam 10, the main beam, the cantilever, the space formed by the flange plate of the cantilever 12 is matched with the flange plate of the main beam 10, the flange plate of the cantilever, the cantilever 12 is matched with the flange plate of the main beam 10, the cantilever, the flange plate of the cantilever, the flange plate, the cantilever, the flange plate, the cantilever 14 is formed by adjusting the cantilever.
As shown in fig. 9 and 10, the hoisting sliding device 20 comprises a U-shaped steel groove 21, a rectangular round hole steel plate 22, rollers 23, a rotating shaft 24 and an inverted chain hoist 25, the hoisting sliding device 20 serves as hoisting mobile operation equipment, the U-shaped steel groove 21 is formed by bending two sides of a 5mm steel plate upwards, the U-shaped steel groove 21 is 150 × × mm in height and wide ×, the framework of the hoisting sliding device 20 is provided, the rollers 23 are symmetrically mounted on two side plates in the U-shaped steel groove 21, the rectangular round hole steel plate 22 is welded at the bottom of the U-shaped steel groove 21, the saw-tooth-shaped round hole steel plate 22 is made of a 5mm steel plate and has the size of 160 135mm, the middle part of the saw-tooth-shaped round hole steel plate 22 is provided with a hanging hole 26 for being connected with a hook at one end of the inverted chain hoist 25, the diameter of the hanging hole 26 is 80mm, the diameter of the roller 23 is 100mm wide by 30mm, 4 in total, the rollers 23 are arranged in pair 539, and are mounted on the U-shaped steel groove 21 through the rotating shaft 24 and bearings, the diameter of the rotating.
As shown in figures 11 and 12, the locking device 26 comprises a support 27, an expansion bolt 28, a barb 29, a pawl 30, a spring 31 and a steel plate 32, and can semi-automatically lock and unlock a fulcrum of the device, so that the fulcrum connection is reliable during operation of the device, and the operation is convenient to unlock, the support 27 is manufactured by welding 50 × 50 × 5mm angle steel and 5mm steel plate, 2 tripods are welded by the angle steel, a plurality of diameter phi 20 expansion bolt holes 33 are formed in the back surface of each tripod and used for fixing the support 27 on a rock wall 35 through the expansion bolts 28, the steel plate is welded on the top and the side surface of each tripod 34 to form the support 27, the support 27 serves as a suspension end fulcrum of the cantilever 12 and bears operation load, the expansion bolts are M22 type and are 20mm in size, 20 × 180mm in 4 in size, so that the support 27 is reliably connected with the rock wall 35, the barb 29 is welded on the bottom of the suspension end head of the cantilever 12, the barb 30 is welded on the top of the support 27, the barb 30 is 120mm away from the end of the support 27, the barb 29 is prevented from being matched with the rock wall 35, and the barb 30 is manufactured by grinding the steel plate 30, and the steel plate 30 under the smooth state that the cantilever 12 is manufactured by.
A tolerance is arranged between the cantilever 12 and the I-steel in the vertical direction, so that the hanging end of the cantilever 12 can rotate a certain distance in the vertical direction, the height from the top of the bracket after the hanging end of the cantilever 12 rotates is larger than the total height of the inverted tooth and the inverted tooth, a spring 31 is fixed at the bottom of the hanging end of the cantilever 12 close to the inverted tooth 29, during installation, the cantilever 12 is pushed to reach the position of a rock wall, the spring 31 is supported on the bracket 27, so that the cantilever 12 supports a height, the inverted tooth 30 is locked into the inverted tooth 29, after a heavy object is hung on the cantilever 12 through the chain block 25, the spring 31 is pressed downwards, the inverted tooth 30 is locked with the inverted tooth 29 in a sinking way, after the heavy object is unloaded, the hanging end of the cantilever 12 is jacked up under the elastic action of the spring 31, the inverted tooth 30 is separated from the inverted tooth 29 in a locking state, and an unlocking. In order to ensure the elasticity of the spring, two springs 31 are arranged side by side on the cantilever 12, and the bottoms of the springs 31 are connected through a steel plate 32 and used for fixing the two springs 31 together so as to ensure that the springs 31 are stressed integrally.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the specific embodiments described above, and various modifications can be made by those skilled in the art without departing from the technical idea of the present invention claimed in the claims.
Claims (6)
1. A rock wall anchor cable prestress tensioning jack installation device is characterized by comprising a device base, a frame body, a cantilever, a hoisting sliding device and a locking device, wherein the frame body is installed on the device base, a guide rail horizontally arranged is installed on the frame body, the cantilever is slidably installed on the guide rail, the cantilever slides to enable one end of the cantilever to extend out of one end of the guide rail to form a hanging end, slide rails are arranged on the two outer sides of the cantilever in the length direction of the cantilever, the hoisting sliding device used for hoisting the jack is slidably installed on the slide rails, the locking device comprises a support which is installed on a far-end rock wall and used as a cantilever hanging fulcrum, and a locking piece which is installed on the cantilever hanging end and the support and used for connecting and fixing the cantilever hanging end and the support,
the locking piece comprises a barb arranged at the bottom of the cantilever and close to the end part of the cantilever, a pawl arranged at the top of the bracket and corresponding to the position of the barb, and a spring arranged at the bottom of the cantilever suspension end and close to the position of the barb, wherein a tolerance is arranged between the cantilever and the guide rail in the vertical direction, so that the suspension end after the cantilever extends out can rotate upwards for a certain distance in the vertical direction, the height of the suspension end of the cantilever from the top of the bracket after rotating is greater than the total height of the barb and the barb, in the initial state, the cantilever reaches the position of a rock wall, the spring is supported on the bracket, so that the cantilever is supported, the barb is locked in the pawl, after a heavy object is suspended on the cantilever, the spring presses downwards, the barb sinks to be locked with the pawl, in the unlocking state, the heavy object is unloaded, the cantilever suspension end of the cantilever jacks under.
2. The installation apparatus of rock-wall anchor cable prestressed tensioning jack of claim 1, wherein the bottom of said apparatus base is installed with casters as a traveling mechanism in a moving state and legs for supporting and fixing in an operating state, said legs being arranged in a vertical direction and screwed to the bottom of the apparatus base.
3. The installation apparatus of rock-wall anchor cable prestressed tensioning jack of claim 1, wherein said apparatus base is provided with a plurality of concrete weights arranged in the opposite direction to the sliding direction of the cantilever.
4. A rock bolt pre-stressed tensioning jack mounting device as claimed in any one of claims 1 to 3, it is characterized in that the guide rail of the frame body is I-shaped steel, the cantilever is formed by connecting two channel steel openings towards the outside back to back, and a sliding groove is formed between the two channel steels at a distance matched with the thickness of the web plate of the I-shaped steel, the two channel steels are connected through C-shaped steel welded on the top parts of the two channel steels, the space formed by the C-shaped steel and the top of the channel steel is matched with the size of the flange plate of the I-shaped steel, the cantilever is sleeved on the outer side of the I-shaped steel through a sliding groove between the two channel steels, the cantilever support device is characterized in that the open grooves on two sides of the channel steel form slide rails matched with the hoisting sliding device, a plurality of pin holes used for limiting the extension length of the cantilever are correspondingly distributed in the I-shaped steel and the channel steel along the length direction, and the cantilever is fixed with the guide rail through pin bolts inserted in the pin holes after being supported in place.
5. The installation apparatus for a rock wall anchor cable prestressed tensioning jack of claim 4, wherein the hoisting sliding apparatus comprises a U-shaped steel channel, two sets of rollers and a chain block, two sets of rollers are symmetrically installed on two side plates in the U-shaped steel channel, the fixed end of the chain block is installed on the U-shaped steel channel, the distance between the rollers on two sides of the U-shaped steel channel is matched with the distance between two channel steels, and the rollers are installed in the openings of the channel steels, so that the chain block can move on the cantilever.
6. The installation apparatus of rock-wall anchor cable prestressed tensioning jack as claimed in claim 1, wherein said cantilever is provided with two springs side by side, and the bottoms of said springs are connected by steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363193.2A CN111470434B (en) | 2020-04-30 | Rock wall anchor rope prestressing force tensioning jack installation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363193.2A CN111470434B (en) | 2020-04-30 | Rock wall anchor rope prestressing force tensioning jack installation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111470434A true CN111470434A (en) | 2020-07-31 |
| CN111470434B CN111470434B (en) | 2024-07-30 |
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| CN206751265U (en) * | 2017-03-03 | 2017-12-15 | 嘉兴力托机械有限公司 | The special rack-type jack of high-speed railway rail |
| WO2018171119A1 (en) * | 2017-03-21 | 2018-09-27 | 中国葛洲坝集团三峡建设工程有限公司 | Hydraulic self-lifting truss-type heavy arch dam formwork system using cantilever |
| CN207177305U (en) * | 2017-09-06 | 2018-04-03 | 中交路桥建设有限公司 | Prefabricated beam stretching jack suspension door frame |
| CN208648561U (en) * | 2018-07-15 | 2019-03-26 | 中建八局第四建设有限公司 | Cantilevered jack hoisting bracket |
| CN212174280U (en) * | 2020-04-30 | 2020-12-18 | 中建五局第三建设有限公司 | Rock wall anchor rope prestressing force tensioning jack installation device |
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