CN112388820A - Whole bundle of platform truck that wears of prestressing force - Google Patents
Whole bundle of platform truck that wears of prestressing force Download PDFInfo
- Publication number
- CN112388820A CN112388820A CN202011308688.1A CN202011308688A CN112388820A CN 112388820 A CN112388820 A CN 112388820A CN 202011308688 A CN202011308688 A CN 202011308688A CN 112388820 A CN112388820 A CN 112388820A
- Authority
- CN
- China
- Prior art keywords
- wheel
- wheels
- pinch roller
- lifting platform
- pressing wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a prestress whole-bundle penetrating trolley, and belongs to the technical field of prestress construction. The device comprises a vehicle body, a scissor-type lifting platform and a lacing machine head; the strand-threading machine head comprises a vertical frame, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained by a plane connecting rod mechanism; each pinch roller is connected with a coaxial synchronous transmission gear, and the synchronous transmission gears of the upper pinch roller and the lower pinch roller which correspond to each other are meshed with each other; the vertical frame is provided with a motor and a push rod for driving the upper pinch roller set to move, and the motor is driven by the lower pinch roller through a chain transmission mechanism. The motor for driving the lower pressure wheel is arranged on the vertical frame, so that the space at the bottom of the machine head is saved, and the machine head can be conveniently supported on the scissor type lifting platform. Meanwhile, the overall structure of the equipment can be simplified by adopting the scissor-type lifting platform, so that the equipment is more convenient to move and use.
Description
Technical Field
The invention relates to a prestress whole-bundle penetrating trolley, and belongs to the technical field of prestress construction.
Background
The bearing capacity of the concrete precast bridge is controlled by the steel strands which penetrate through the reserved holes and are subjected to the accurately controlled tensioning process, so that the number of the steel strands arranged on each precast beam is accurately calculated according to the total load borne. For the threading process of the steel strands, the beam-making field in China adopts a 'bundling threading process' in the early stage, and each steel strand is pre-sized, arranged in order and bundled into a bundle; and then the steel strand is pulled by a winch to penetrate into the reserved hole, and as disordered winding does not exist, stress of each steel strand is basically uniform during tensioning, and the optimal bearing capacity of the whole beam body can be achieved. However, the operations of "restraint making" and "restraint pulling" are all completed manually, which is a quite labor-consuming process.
Since the efficiency of the 'single reeving process' produced later is several times that of the 'bundling reeving process', and the single reeving machine has simple structure and low price, the single reeving process is rapidly popularized to all precast beam fields in the country under the drive of the economic benefit of the market. The serious hidden trouble of the process is as follows: because the superposition influence of the 'spiral line' on the outer surface of the steel strand and the 'hyperbolic' drooping radian of the reserved hole forces a single steel strand to generate unpredictable 'disordered winding' in the penetrating process, the steel strand is a steel cable stranded by seven steel wires together, the outer diameter of the steel strand is actually a spiral line with a longer pitch, the single rope penetrating process is in actual operation, when the steel strand penetrating the reserved hole is crowded gradually, the spiral lines are just like rifles in a gun bore, the steel strand penetrating after extrusion rotates and winds, the enveloping outer diameter of the whole steel strand is increased undoubtedly, but the reserved hole diameter of the beam body is fixed and unchanged, when S bending occurs in the reserved hole or various adverse factors are accidentally superposed, the conveying resistance of the steel strand is greatly increased, in order to forcibly penetrate the last steel strand, only the conveying force is increased, due to the strong conveying force and the rotation, the steel strands can obliquely drill through the cement layer of the beam body along the spiral line, and the steel strands are drilled outwards from the middle of the beam body or inwards from adjacent reserved holes.
When the situation occurs, when the last steel strand cannot be penetrated, an operator can select to retract the drilled part, then forcibly penetrates a steel strand at the other end, the last steel strand cannot be completely penetrated due to extrusion of the penetrated steel strand in the reserved hole, the operator often selects how deep the operator can penetrate, and then cuts off the penetrated steel strand to make false pieces, which is a fraud behavior difficult to find from the outside, and can be used for the whole steel strand
The strip lines present potential hazards.
In addition, except the above-mentioned circumstances, the unordered winding of steel strand wires causes the steel strand wires that penetrate to differ in length, and according to the steel strand wires of 65Mn alloy steel material of manual, its elastic modulus E is up to more than 200, in the condition of fixing the both ends of the higher 65Mn steel strand wires of stranded elastic modulus together, exerts the critical pulling force of elastic deformation, the condition that the stress of the shorter steel strand wires is big, the stress of longer steel strand wires is little, even not atress at all appears.
In addition, the speed of a single rope penetrating process is very high, the length manually cut by a civil worker is difficult to control, in order to be stable, long and short, the steel stranded wires at two ends of the beam body are provided with the allowance of about 1 meter, the allowance is calculated according to the waste of 0.5 meter at each end of the steel stranded wires, each beam is provided with hundreds of steel stranded wires, the whole line is provided with thousands of steel stranded wires of bridges, and the waste is really a very striking number.
Chinese patent application No. CN201921354175.7 discloses a bridge prestressed whole-bundle steel strand pulling device, which effectively realizes high-quality whole-bundle pulling. However, the lifting device adopts the door frame and the electric hoist for lifting, has heavy structure and inconvenient use, and has further improved space.
Disclosure of Invention
In view of this, the invention provides a prestressed whole-bundle penetrating trolley, which has a simpler lifting structure, is convenient to move and is more convenient to use.
In order to achieve the above purpose, the invention provides the following technical scheme:
a prestressed whole-bundle penetrating trolley comprises a trolley body, a scissor type lifting platform arranged on the trolley body, and a penetrating machine head arranged on the scissor type lifting platform; the strand penetrating machine head comprises a vertical frame, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained through a plane connecting rod mechanism; the upper pressing wheel group comprises upper pressing wheels distributed along the line feeding direction, the lower pressing wheel group comprises lower pressing wheels in one-to-one correspondence with the upper pressing wheels, each pressing wheel is connected with a coaxial synchronous transmission gear, and the synchronous transmission gears of the upper and lower pressing wheels which correspond to each other are meshed with each other; the vertical frame is provided with a motor and a push rod for driving the upper pinch roller set to move, and the motor is driven by the lower pinch roller through a chain transmission mechanism.
Furthermore, the pinch roller is a flat wheel, two ends of the pinch roller are respectively sleeved with a side wall, the side walls are restrained by check rings, and the side walls have complete rotational freedom degrees relative to the pinch roller.
Furthermore, a hydraulic system for driving the push rod and the scissor type lifting platform is also arranged on the vehicle body; and a longitudinal translation mechanism for enabling the strand pulling machine head to extend forwards and retreat is arranged between the strand pulling machine head and the scissor type lifting platform.
Furthermore, a guide pipe positioned on the wire inlet side is further arranged on the wire penetrating machine head, and a horizontal guide wheel is arranged on the wire inlet side of the guide pipe.
Furthermore, the scissor-fork type lifting platform is also provided with two opposite vertical guide wheels positioned at the wire inlet side of the horizontal guide wheels.
Furthermore, a combing and braiding device which is positioned between the horizontal guide wheel and the vertical guide wheel is further arranged on the scissor type lifting platform, and a plurality of hole sites for walking single steel strands are arranged on the combing and braiding device.
Furthermore, the automobile body has front wheel crossbeam and rear wheel crossbeam, is equipped with two front wheels on the front wheel crossbeam, is equipped with two rear wheels on the rear wheel crossbeam, the rear wheel is the universal wheel, and front wheel and rear wheel all have the locking mechanism.
Furthermore, both ends of the front wheel cross beam and the rear wheel cross beam are provided with lifting lugs.
Furthermore, each lower pressing wheel is connected with a coaxial transmission chain wheel, the adjacent lower pressing wheels are driven by a chain, and the motor is driven by the lower pressing wheel with the head end through the chain.
Further, a tensioning wheel for tensioning the chain is arranged at each chain.
As can be seen from the above description, the technical scheme of the invention has the beneficial effects that:
1. the invention adopts the scissor-fork type lifting platform to realize the lifting of the lacing machine head, and has simpler structure, more convenient movement and more convenient use.
2. The motor for driving the lower pressure wheel is arranged on the vertical frame, so that the space at the bottom of the machine head is saved, and the machine head can be conveniently supported on the scissor type lifting platform.
3. Furthermore, the upper pressing wheel and the lower pressing wheel are flat wheels, and compared with a cambered wheel, the linear speeds of all points on the wheel surface of the flat wheel are consistent, so that the steel strands penetrating through the whole bundle can keep consistent speeds, and the dislocation of the ends of the steel strands is avoided. In addition, the side walls of the upper and lower pressing wheels are arranged to be movable structures, so that the friction of the side walls on the edge steel strand can be reduced, and the dislocation of the ends of the steel strand is further prevented.
4. The invention can also be provided with a combing device, thereby playing the effect of combing and binding while combing.
Drawings
In order to more clearly describe this patent, one or more of the following figures are provided.
Fig. 1 is a schematic structural view of a prestressed whole-bundle penetrating trolley in an embodiment of the invention.
Fig. 2 is a schematic structural view of the strand pulling head of fig. 1.
FIG. 3 is a schematic diagram of the upper and lower pressing wheels according to an embodiment of the present invention.
FIG. 4 is a schematic structural diagram of a combing and knitting device in an embodiment of the present invention.
FIG. 5 is a reference diagram of a usage status of the embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present patent by those skilled in the art, the technical solutions of the present patent are further described in the following specific cases.
As shown in fig. 1 and 2, a prestressed whole-beam stringing trolley comprises a trolley body a1, a scissor type lifting platform a2 arranged on a trolley body a1, and a beam stringing head A3 arranged on a scissor type lifting platform a 2; the strand-threading machine head A3 comprises a vertical frame 3, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set forms an integral unit capable of moving in a translation mode through an upper wheel frame 2, the lower pressing wheel set is arranged on a lower wheel frame 1, and the lower wheel frame 1 and the upper wheel frame 2 are parallel to each other; the upper wheel frame 2 and the lower wheel frame 1 are connected through a connecting frame rod to form a plane connecting rod movement mechanism; the upper pressing wheel group comprises upper pressing wheels 7, the lower pressing wheel group comprises lower pressing wheels 6 which are in one-to-one correspondence with the upper pressing wheels 7, each pressing wheel is connected with a coaxial synchronous transmission gear 8, and the synchronous transmission gears 8 of the upper and lower pressing wheels which are in mutual correspondence are meshed with each other; the vertical frame 3 is provided with a motor 4 and a push rod 5 for driving the upper wheel frame 2 to move, and the motor 4 is driven by a lower pressing wheel 6 through a chain transmission mechanism.
Further, as shown in fig. 3, the pressing wheel is a flat wheel, and includes a wheel body 61, left and right side walls 62, and left and right retaining rings 63, which are embedded at two ends of the wheel body and restrain the side walls, and the side walls have complete rotational freedom with respect to the wheel body. The wear-resistant rubber is arranged on the wheel body, so that friction force can be increased, and the steel strand is protected from being scratched. The wheel body is connected with the wheel shaft in a key connection mode.
Still referring to fig. 1, the vehicle body a1 is further provided with a handle A8, an electric cabinet a5 and a hydraulic system a4 for driving a push rod and a scissor lift platform.
Further, the vehicle body a1 has a front wheel cross member and a rear wheel cross member, two rear wheels a6 on the rear wheel cross member are universal wheels, and both the front wheel a7 and the rear wheel a6 have a locking mechanism. Both ends of the front wheel cross beam and the rear wheel cross beam are provided with lifting lugs A9.
Still referring to fig. 1, the strand pulling head is further provided with a guide pipe 12 and a horizontal guide wheel 13 which are positioned on the wire inlet side, and the scissor type lifting platform is provided with a combing device 14 and two opposite vertical guide wheels 15 which are positioned on the wire inlet side. And a longitudinal translation mechanism is arranged between the lacing machine head and the scissor type lifting platform and is used for enabling the lacing machine head to extend forwards or retreat. The guide pipe 12, the horizontal guide wheel 13 and the vertical guide wheel 15 all play a role in guiding, and can well restrain the whole bundle of steel strands to enable the steel strands to be conveyed smoothly. The combing device 14 is shown in fig. 4, and is provided with a plurality of holes for running single steel strands.
For the combed whole bundle of steel strands, the comber 14 is not required. If a plurality of steel strands are not combed into a bundle in advance, each steel strand can be respectively penetrated in one hole position of the combing device, and the ends are bundled. Therefore, when the steel strands are threaded, the steel strands can be combed and braided simultaneously, and the working efficiency is greatly improved.
Still see fig. 2, each lower pinch roller 6 is connected with a coaxial transmission chain wheel 9, adjacent lower pinch rollers are driven by a chain 10, and the motor 4 is driven by the lower pinch roller with the head end being the chain.
In addition, in order to ensure the transmission efficiency, a tension wheel 11 for tensioning the chain is also arranged at each chain. In use, the chain is passed around the tensioner, i.e. the tensioner is located outside the endless area of the chain.
Fig. 5 is a reference diagram of the usage status of the present embodiment, which is very simple in usage.
In a word, the motor for driving the lower pressure wheel is arranged on the vertical frame, so that the space at the bottom of the machine head is saved, and the machine head can be conveniently carried on the scissor type lifting platform. Meanwhile, the overall structure of the equipment can be simplified by adopting the scissor-type lifting platform, so that the equipment is more convenient to move and use. In addition, the flat wheels are used as the upper pressing wheel and the lower pressing wheel, and the side walls of the upper pressing wheel and the lower pressing wheel are arranged to be movable structures, so that the speed consistency of each steel strand in the strand pulling process can be effectively ensured, the dislocation of the ends of the steel strands is prevented, and the strand pulling quality is greatly improved.
It should be noted that the above embodiments are only specific examples of the implementation schemes of this patent, and do not cover all the implementation schemes of this patent, and therefore, the scope of protection of this patent cannot be considered as limited; all the implementations which belong to the same concept as the above cases or the combination of the above schemes are within the protection scope of the patent.
Claims (10)
1. The utility model provides a whole bundle of platform truck that wears of prestressing force which characterized in that: comprises a vehicle body, a scissor-type lifting platform arranged on the vehicle body, and a lacing machine head arranged on the scissor-type lifting platform; the strand penetrating machine head comprises a vertical frame, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained through a plane connecting rod mechanism; the upper pressing wheel group comprises upper pressing wheels distributed along the line feeding direction, the lower pressing wheel group comprises lower pressing wheels in one-to-one correspondence with the upper pressing wheels, each pressing wheel is connected with a coaxial synchronous transmission gear, and the synchronous transmission gears of the upper and lower pressing wheels which correspond to each other are meshed with each other; the vertical frame is provided with a motor and a push rod for driving the upper pinch roller set to move, and the motor is driven by the lower pinch roller through a chain transmission mechanism.
2. The prestressed whole-bundle pulling trolley according to claim 1, characterized in that: the pinch roller is a flat wheel, two ends of the pinch roller are respectively sleeved with a side wall, the side walls are restrained by check rings, and the side walls have complete rotational freedom degree relative to the pinch roller.
3. The prestressed whole-bundle pulling trolley according to claim 1, characterized in that: the trolley body is also provided with a hydraulic system for driving the push rod and the scissor type lifting platform; and a longitudinal translation mechanism for enabling the strand pulling machine head to extend forwards and retreat is arranged between the strand pulling machine head and the scissor type lifting platform.
4. The prestressed whole-bundle pulling trolley according to claim 1, characterized in that: the threading machine head is also provided with a guide pipe positioned on the wire inlet side, and the wire inlet side of the guide pipe is provided with a horizontal guide wheel.
5. The prestressed whole-bundle pulling trolley according to claim 4, wherein: and two opposite vertical guide wheels positioned at the wire inlet side of the horizontal guide wheel are also arranged on the scissor type lifting platform.
6. The prestressed whole-bundle pulling trolley according to claim 5, wherein: the scissor-type lifting platform is further provided with a combing and braiding device located between the horizontal guide wheels and the vertical guide wheels, and the combing and braiding device is provided with a plurality of hole sites used for walking single steel strands.
7. The prestressed whole-bundle pulling trolley according to claim 1, characterized in that: the vehicle body is provided with a front wheel cross beam and a rear wheel cross beam, two front wheels are arranged on the front wheel cross beam, two rear wheels are arranged on the rear wheel cross beam, the rear wheels are universal wheels, and the front wheels and the rear wheels are provided with locking mechanisms.
8. The prestressed whole-bundle pulling trolley according to claim 7, wherein: both ends of the front wheel cross beam and the rear wheel cross beam are provided with lifting lugs.
9. The prestressed whole-bundle pulling trolley according to claim 1, characterized in that: each lower pressing wheel is connected with a coaxial transmission chain wheel, the adjacent lower pressing wheels are driven by a chain, and the motor is driven by the lower pressing wheel with the head end being the chain.
10. The prestressed whole-bundle pulling trolley according to claim 9, wherein: and a tensioning wheel for tensioning the chains is also arranged at each chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308688.1A CN112388820A (en) | 2020-11-20 | 2020-11-20 | Whole bundle of platform truck that wears of prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011308688.1A CN112388820A (en) | 2020-11-20 | 2020-11-20 | Whole bundle of platform truck that wears of prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112388820A true CN112388820A (en) | 2021-02-23 |
Family
ID=74607615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011308688.1A Pending CN112388820A (en) | 2020-11-20 | 2020-11-20 | Whole bundle of platform truck that wears of prestressing force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112388820A (en) |
-
2020
- 2020-11-20 CN CN202011308688.1A patent/CN112388820A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113756201B (en) | T-structure continuous beam prestressed steel strand pulling method and pulling device thereof | |
| CN206804438U (en) | Realize moment of torsion and the pull-out test device for anchor cable of axle power decoupling | |
| AU2004231194A1 (en) | Auxiliary assembly for reducing unwanted movement of a hoist rope | |
| CN111621919B (en) | Side slope anchor rope weaves processing platform | |
| CN204111228U (en) | Hoisting rope pre-tightening apparatus and construction machinery and equipment device | |
| EP1728915B1 (en) | Carrier means with an interlocking connection for connecting several cables | |
| CN214082060U (en) | Whole bundle of wearing of prestressing force is put | |
| CN201670676U (en) | Automatic rope adjusting and anti-deviation device of dispatch winch | |
| CN214055809U (en) | Whole bundle of platform truck that wears of prestressing force | |
| CN2937209Y (en) | Six-ply forged wirerope | |
| CN112388820A (en) | Whole bundle of platform truck that wears of prestressing force | |
| CN212477255U (en) | Steel wire rope head tensioning device for elevator | |
| CN201241636Y (en) | Hoisting mechanism of rotary digging drill | |
| CN112411378A (en) | Bridge prestressing force whole bundle of steel strand wires compresses tightly conveyor | |
| CN211522889U (en) | Bridge prestressing force whole bundle of steel strand wires compresses tightly conveyor | |
| CN211522888U (en) | Bridge prestressing force whole bundle of steel strand wires wears to restraint equipment | |
| CN201443316U (en) | Multifunctional wire rope capstan machine | |
| CN210829099U (en) | Two-layer platform arranged in sinking type installation mode of power-assisted winch | |
| CN1009844B (en) | Plant for mfr. of steel-rubber shaft ropes | |
| CN111661714A (en) | Pay-off machine, and pay-off machine telescopic driving mechanism and driving method | |
| CN219807713U (en) | Wire rope guiding mechanism | |
| CN202134286U (en) | Intersecting threading guide roller for stranding machine | |
| CN217174375U (en) | Auxiliary pre-stressed steel strand pulling device | |
| CN112411377A (en) | Bridge prestressing force whole bundle of steel strand wires wears to restraint equipment | |
| CN213772706U (en) | Transmission mechanism of strander traction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |