CN112211097A - Stay cable maintenance trolley - Google Patents
Stay cable maintenance trolley Download PDFInfo
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- CN112211097A CN112211097A CN202011143057.9A CN202011143057A CN112211097A CN 112211097 A CN112211097 A CN 112211097A CN 202011143057 A CN202011143057 A CN 202011143057A CN 112211097 A CN112211097 A CN 112211097A
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- brake
- state
- stay cable
- braking
- winch
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Movable Scaffolding (AREA)
Abstract
The invention relates to a stay cable maintenance trolley, the main body of which is a working platform, comprising: the first brake mechanism is connected with the second brake mechanism and fixed at one end of the top of the working platform, and comprises a first guide supporting wheel set, a first brake and a first air cylinder; the second brake mechanism comprises a second guide supporting wheel set, a second brake and a second air cylinder; the electric push rod is connected with the first brake mechanism and the second brake mechanism; the walking supporting mechanism is fixed at one end of the top of the working platform, which is far away from the first braking mechanism; the winch traction rope is connected with the winch and the first brake mechanism. Compared with the prior art, the maintenance trolley can be pulled by the winch to move, and can also be driven by the first brake mechanism, the second brake mechanism and the electric push rod to move on the stay cable, so that the stay cable can be maintained under the condition of ensuring the traffic operation.
Description
Technical Field
The invention relates to the field of stay cable maintenance, in particular to a stay cable maintenance trolley.
Background
The cable-stayed bridge is more and more widely applied to modern bridge construction, and has strong spanning capability and beautiful shape. However, the stay cable is used as a main bearing mechanism of the cable-stayed bridge, and is exposed in a severe environment for a long time, and due to factors such as irregular processing and installation, the problems of surface sheath damage and corrosion of internal steel wires of the stay cable can occur, which endangers the safety of the bridge, so the stay cable needs to be periodically overhauled.
At present, the maintenance of suspension cable is often gone on through electronic hanging flower basket equipment, but, some bridge suspension cable is long and high, and the cable below transportation vehicles is intensive, and conventional electronic hanging flower basket equipment can not satisfy the maintenance requirement under the condition of guaranteeing to lead to the car operation.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a stay cable maintenance trolley, which can be pulled by a winch to move or driven by a first braking mechanism, a second braking mechanism and an electric push rod to move on a stay cable without using the winch, so that the stay cable can be maintained under the condition of ensuring the traffic operation.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a suspension cable overhauls dolly, includes hoist engine, hoist engine haulage rope and work platform, work platform overhauls the main part of dolly for the suspension cable, the suspension cable overhauls the dolly and still includes:
the first brake mechanism is connected with the second brake mechanism, is connected to one end of the top of the working platform and comprises a first guide supporting wheel set, a first brake and a first air cylinder;
the second brake mechanism is connected with the first brake mechanism and comprises a second guide supporting wheel set, a second brake and a second air cylinder;
the electric push rod is connected with the first brake mechanism and the second brake mechanism;
the walking supporting mechanism is fixed at one end of the top of the working platform, which is far away from the first braking mechanism;
the traction rope of the winch is connected with the winch and the first brake mechanism, and the stay cable to be overhauled sequentially penetrates through the first guide supporting wheel set, the first brake, the second guide supporting wheel set, the second brake and the walking supporting mechanism.
Furthermore, the stay cable maintenance trolley further comprises a control system which is in communication connection with the winch and the working platform.
Furthermore, the stay cable maintenance trolley further comprises an auxiliary device, wherein the auxiliary device comprises an emergency stopping device, a rope breaking protection device, an overload protection device, a lifting limit device, a descending anti-collision protection device, a walking limit device, a damping slow descending device, a phase sequence protection device, an overload protection device and a communication alarm device.
Furthermore, the first guide supporting wheel set comprises an upper change gear, a lower change gear and a left guide wheel and a right guide wheel; the second guide supporting wheel set comprises an upper change gear, a lower change gear and a left guide wheel and a right guide wheel.
Furthermore, the first brake comprises an opening state and a braking state, when the first brake is in the opening state, a distance is kept between a brake pad of the first brake and the stay cable, and when the first brake is in the braking state, the brake pad of the first brake is tightly attached to the stay cable; the second brake comprises an opening state and a braking state, when the second brake is in the opening state, a distance is kept between a brake pad of the second brake and the stay cable, and when the second brake is in the braking state, the brake pad of the second brake is tightly attached to the stay cable.
Furthermore, the stay cable maintenance trolley further comprises an air pump arranged in the working platform, the air pump is matched with the first air cylinder and used for switching the braking state and the opening state of the first brake, and the air pump is matched with the second air cylinder and used for switching the braking state and the opening state of the second brake.
Furthermore, the working state of the stay cable maintenance trolley comprises a winch traction state and a braking lifting state, the first brake and the second brake of the stay cable maintenance trolley are both in an open state in the winch traction state, and the winch controls the movement of the stay cable maintenance trolley through the winch traction rope.
Furthermore, the working state of the stay cable maintenance trolley comprises a winch traction state and a braking lifting state, the winch stops working in the braking lifting state, the first brake is in an open state, the second brake is in a braking state, the electric push rod drives the first brake to move on the stay cable when extending or contracting, and the first brake drives the working platform to climb or descend.
Furthermore, in the braking lifting state, the climbing of the stay cable maintenance trolley comprises the following steps:
a 1: the first brake and the second brake are switched to a braking state;
a 2: the first brake is switched to an open state, the second brake is switched to a brake state, the electric push rod extends to the maximum length, and the first brake drives the working platform to climb;
a 3: the first brake is switched to a braking state, the second brake is switched to an opening state, and the electric push rod is contracted to the minimum length;
a 4: step a1 is repeatedly performed.
Furthermore, the descending of the stay cable maintenance trolley in the braking lifting state comprises the following steps:
b 1: the first brake and the second brake are switched to a braking state;
b 2: the second brake is switched to an opening state, the first brake is switched to a braking state, and the electric push rod extends to the maximum length;
b 3: the second brake is switched to a braking state, the first brake is switched to an opening state, the electric push rod is contracted to the minimum length, and the first brake drives the working platform to descend;
b 4: step b1 is repeatedly executed.
Compared with the prior art, the invention has the following beneficial effects:
(1) the working state of the maintenance trolley comprises a winch traction state and a braking lifting state, the maintenance trolley can move by traction of the winch, the winch is not needed, the maintenance trolley is driven by the first braking mechanism, the second braking mechanism and the electric push rod to move on the stay cable, and maintenance of the stay cable can be performed under the condition of ensuring the operation of the general trolley.
(2) Through control system and hoist engine and work platform communication, two kinds of workable states switch each other, and the reliability is high, has also improved the security of operation.
(3) Be equipped with auxiliary device in the work platform, auxiliary device includes emergency stop device, disconnected rope protection device, overload protection device and communication alarm device etc. has further promoted the security when overhauing the dolly operation.
(4) The travelling support mechanism and the first brake mechanism are respectively arranged at two ends of the working platform, the stay cable to be overhauled sequentially passes through the first guide support wheel set, the first brake, the second guide support wheel set, the second brake and the travelling support mechanism, and the overhauling trolley can stably move along the stay cable in the working process.
Drawings
FIG. 1 is a schematic structural view of a stay cable maintenance trolley;
FIG. 2 is an overall schematic view of a stay cable maintenance trolley;
FIG. 3 is a schematic view of the operation of the stay cable maintenance trolley, wherein (a) is a traction state of a winch, and (b) is a braking lifting state;
FIG. 4 is a schematic diagram of the operation of the first brake and the second brake, wherein (a) is the brake open state and (b) is the brake applied state;
reference numerals: 1. the device comprises a working platform, 2, a first brake mechanism, 201, a first guide supporting wheel set, 202, a first brake, 203, a first air cylinder, 3, a second brake mechanism, 301, a second guide supporting wheel set, 302, a second brake, 303, a second air cylinder, 4, an electric push rod, 5, a walking supporting mechanism, 6, an air pump, 7, a winch, 8 and a winch traction rope.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
in this embodiment, the overhaul of the stay cable of the sutong bridge is taken as an example, and according to the material of each part of the overhaul trolley of the stay cable, the requirements of the working environment of the overhaul trolley of the stay cable are as follows: the temperature is-20 ℃ to-50 ℃, the relative humidity is not more than 90% at 25 ℃, the gust wind speed is less than 8.3m/s, and the gust wind speed is equivalent to 5-grade wind.
A main body of the stay cable maintenance trolley is a working platform 1, and the stay cable maintenance trolley comprises a first braking mechanism 2, a second braking mechanism 3, an electric push rod 4, a walking supporting mechanism 5, an air pump 6, a winch 7 and a winch traction rope 8. In this embodiment, the hoisting machine 8 uses a 2.5kwh waterproof polymer lithium ion power source.
The overall schematic diagram of the stay cable maintenance trolley is shown in fig. 2. The winch traction rope 8 is connected with the winch 7 and the first brake mechanism 2, and the stay cable to be overhauled sequentially passes through the first guide supporting wheel set 201, the first brake 202, the second guide supporting wheel set 301, the second brake 302 and the walking supporting mechanism 5.
The working platform 1 consists of a platform, a platform connection device, a platform outer package device, a platform inner part, a platform restraint device, an anti-collision device and a protection device. The platform connection is a steel structure and is used for connecting the walking brake mechanism and the walking wheels; the platform is externally provided with a totally-enclosed aluminum plate, and the wind resistance is reduced by using a mesh aluminum plate; the inside of the platform is provided with an anti-skid pattern aluminum plate which is provided with a safety belt pendant; the platform constraint is windproof and is provided with a double brake; the anti-collision device reduces the impact of the platform on the barrier by using the rubber wall-leaning wheel; the platform bumper bar arranged on the protection device can stop the platform from walking and descending when meeting obstacles. The working platform 1 can be changed in internal structure adaptability according to the angle of the stay cable.
The first brake mechanism 2 is connected with the second brake mechanism 3, and the first brake mechanism 2 is connected to one end of the top of the working platform 1 and comprises a first guide support wheel set 201, a first brake 202 and a first air cylinder 203.
The second brake mechanism 3 is connected to the first brake mechanism 2, and includes a second guide support wheel set 301, a second brake 302, and a second cylinder 303.
The electric push rod 4 is connected with the first brake mechanism 2 and the second brake mechanism 3 and used for driving the first brake mechanism 2 and the second brake mechanism 3.
The walking supporting mechanism 5 is fixed at one end, far away from the first braking mechanism 2, of the top of the working platform 1 and used for stabilizing the working platform 1, and the walking supporting mechanism 5 and the first braking mechanism 2 are located at two ends of the working platform 1, so that the stay cable maintenance trolley can stably climb or descend along the stay cable when moving on the stay cable.
The stay cable overhauling trolley further comprises a control system, the control system is in communication connection with the winch 7 and the working platform 1, in the embodiment, the control system is composed of a PLC main controller, the control voltage is 24V, the host, the platform operation box and the electric cabinet are in waterproof and dustproof grade IP55, and the signal transmission with the winch 7 is in a remote control mode.
The first guiding and supporting wheel set 201 comprises an upper change gear, a lower change gear, a left guide wheel and a right guide wheel and is used for guiding the stay cable maintenance trolley, and the second guiding and supporting wheel set 301 comprises an upper change gear, a lower change gear, a left guide wheel and a right guide wheel and is used for guiding the stay cable maintenance trolley.
The first brake 202 includes an open state and a braking state, and the second brake 302 also includes an open state and a braking state. The air pump 6 is disposed in the working platform 1, and the air pump 6 is matched with the first air cylinder 203 and used for switching the braking state and the opening state of the first brake 202. The first brake 202 can be switched to an open state by the first cylinder 203, or can be switched to a braking state by the first cylinder 203 and gravity. The air pump 6 is engaged with the second cylinder 303 for switching the braking state and the opening state of the second brake 302. The second brake 302 can be switched to an open state by the second cylinder 303, or can be switched to a braking state by the second cylinder 303 and gravity.
The operation principle of the first brake 202 and the second brake 302 is shown in fig. 4, and the first brake 202 is taken as an example for explanation, and the operation principle of the second brake 302 is the same as that of the first brake 202. Fig. 4 (a) shows an opened state of the first brake 202, the brake pad is spaced apart from the stay cable by 10mm, fig. 4 (b) shows a braked state of the first brake 202, the brake pad is pressed against the stay cable, and the frictional force between the first brake 202 and the stay cable is gradually increased until braking by the gravity of the stay cable maintenance vehicle, where F in fig. 4 shows the tension of the hoist rope 8, F1 shows the gas spring force of the first brake 202, Q shows the total weight of the equipment, and Q1 shows the self weight of the first brake 202.
When the first brake 202 is in the open state, the first brake mechanism 2 generates a frictional force F between F, the total weight Q of the equipment, the rolling resistance F of the maintenance vehicle (generated by the guide wheels of the first guide support wheel set 201, not shown), the brake pad and the stay cablefUnder the combined action of the two mechanisms, the two mechanisms are in a balanced state (climb, descend or be static at a constant speed). Friction force F between brake pad and stay cablefCan be determined by a torque balance analysis of the first brake 202 (the first brake 202 is subjected to F1, Q1 and F)fBut in a state of moment equilibrium).
When the first brake 202 is in the braking state, the first brake mechanism 2 receives the total weight Q of the apparatus, and the gas spring forces F1, F of the first brake 202fThe combined action of the two components. Increasing the gas spring force F1 of first brake 202 gradually increases FfAnd the brake of the maintenance trolley is completed.
The working state of the stay cable maintenance trolley comprises a traction state of a winch and a braking lifting state, and is shown in figure 3.
In order to overhaul the stay cable under the condition of ensuring the traffic operation, the stay cable overhaul trolley can also work in a braking and lifting state, does not depend on the winch 7, and drives the first braking mechanism 2 and the second braking mechanism 3 to move through the extension and the contraction of the electric push rod 4, so as to drive the stay cable overhaul trolley. And the traction state and the braking lifting state of the winch can be mutually switched, so that the safety and the reliability of the winch under the condition of accidental breakage of the traction rope 8 are also improved.
As shown in fig. 3 (a), in the traction state of the winch, the first brake 202 and the second brake 302 of the stay cable maintenance trolley are both in an open state, the winch 7 controls the stay cable maintenance trolley to move on the stay cable through the winch traction rope 8, and a worker checks or maintains the PE sheath in the work platform 1.
As shown in fig. 3 (b), in the braking up-down state, the winch 7 stops working, the first brake 202 is in the open state, the second brake 302 is in the braking state, the electric push rod 4 drives the first brake 202 to move on the stay cable when extending or contracting, and the first brake 202 drives the working platform 1 to ascend or descend.
Under the braking lifting state, the climbing of the stay cable maintenance trolley comprises the following steps:
a 1: the first brake 202 and the second brake 302 are both switched to the braking state;
a 2: the first brake 202 is switched to an open state, the second brake 302 is switched to a brake state, the electric push rod 4 extends to the maximum length, and the first brake 202 drives the working platform 1 to climb;
a 3: the first brake 202 is switched to a braking state, the second brake 302 is switched to an opening state, and the electric push rod 4 is contracted to a minimum length;
a 4: step a1 is repeatedly performed.
The descending of the stay cable maintenance trolley in the braking lifting state comprises the following steps:
b 1: the first brake 202 and the second brake 302 are both switched to the braking state;
b 2: the second brake 302 is switched to the open state, the first brake 202 is switched to the braking state, and the electric push rod 4 extends to the maximum length;
b 3: the second brake 302 is switched to a braking state, the first brake 202 is switched to an opening state, the electric push rod 4 is contracted to the minimum length, and the first brake 202 drives the working platform 1 to descend;
b 4: step b1 is repeatedly executed.
The stay cable overhauls dolly still includes auxiliary device, and auxiliary device includes:
the emergency stop device is characterized in that a button is positioned at a striking position in the working platform 1, and the emergency stop device can conveniently and emergently stop when an accident happens;
the rope breakage protection device is a mechanical brake, when a winch pulls a rope 8 to break, the working platform 1 is immediately braked on a stay cable, and meanwhile, a power supply is turned off and an alarm is given;
the overload protection device gives an alarm and automatically turns off the main power supply when the load exceeds 25 percent of the rated load;
the lifting limit device automatically stops when the working platform 1 reaches a lifting limit position;
the descending anti-collision protection device automatically stops and gives an alarm when the working platform 1 meets a bottom obstacle;
the walking limiting device stops automatically when the stay cable maintenance trolley walks to the extreme positions such as the stay cable end and the like;
the damping slow-descending device is characterized in that when the stay cable maintenance trolley is powered off accidentally or cannot work for a long time, the working platform 1 can slowly descend to the ground under the influence of damping;
the phase sequence protection device prevents phase inversion, phase loss and phase leakage and is controlled by the PLC to carry out double protection;
the overload protection device is used for preventing the motor from being overloaded and overheated and playing a backup protection role in mechanical overload;
the communication alarm device, the staff and the ground in the work platform 1 communicate through the wireless telephone communication system.
When the working platform 1 encounters an obstacle in the walking process, a signal is sent out, the main power supply of the winch 7 is cut off, and the walking is stopped. When the winch traction rope 8 is broken due to an accident, the broken rope protection device can timely brake, the maintenance vehicle is braked on the inhaul cable, and the safety of personnel is guaranteed. The operation can be recovered by reconnecting the traction rope 8 of the winch with the first brake mechanism 2.
The stay cable maintenance trolley has the following states in the working process, and each state is specifically as follows:
and the stay cable overhauling trolley is in a static state. At this time, the stay cable maintenance trolley is at a certain position of the stay cable under the traction of the winch traction rope 8, and the traction force F of the winch traction rope 8 and the sliding force of the stay cable maintenance trolley are in a balanced state.
And the stay cable maintenance trolley is in a traction climbing state. At this time, the stay cable maintenance trolley climbs upwards at a constant speed along the stay cable under the traction of the winch traction rope 8, and the traction force F of the winch traction rope 8 and the downward sliding force and the rolling resistance of the stay cable maintenance trolley are in a balanced state.
And the stay cable maintenance trolley is in a traction descending state. At this time, the stay cable maintenance trolley descends along the stay cable at a constant speed under the action of the gliding force of the stay cable maintenance trolley, and the gliding force of the stay cable maintenance trolley is in a balanced state with the traction force F and the rolling resistance of the traction rope 8 of the winch.
Emergency braking state of the stay cable maintenance trolley. When the stay cable is accidentally broken, the stay cable maintenance trolley descends along the stay cable under the action of the gliding force, the first brake 202 and the second brake 302 brake, and the brake pads of the two brakes rub against the stay cable to rapidly squeeze and brake.
The stay cable maintenance trolley is in a non-traction self-climbing or descending state. When the winch 7 is not used for traction, the first brake mechanism 2 and the second brake mechanism 3 are alternately lifted or lowered under the action of the electric push rod 4 to drive the stay cable maintenance trolley to climb or descend along the stay cable.
Claims (10)
1. The utility model provides a suspension cable overhauls dolly, includes hoist engine (7), hoist engine haulage rope (8) and work platform (1), work platform (1) is the main part of suspension cable maintenance dolly, its characterized in that, suspension cable maintenance dolly still includes:
the first brake mechanism (2) is connected with the second brake mechanism (3), is connected to one end of the top of the working platform (1), and comprises a first guide supporting wheel set (201), a first brake (202) and a first air cylinder (203);
the second brake mechanism (3) is connected with the first brake mechanism (2) and comprises a second guide supporting wheel set (301), a second brake (302) and a second air cylinder (303);
the electric push rod (4) is connected with the first brake mechanism (2) and the second brake mechanism (3);
the walking supporting mechanism (5) is fixed at one end of the top of the working platform (1) far away from the first braking mechanism (2);
the winch traction rope (8) is connected with the winch (7) and the first braking mechanism (2), and a stay cable to be overhauled sequentially penetrates through the first guide supporting wheel set (201), the first brake (202), the second guide supporting wheel set (301), the second brake (302) and the walking supporting mechanism (5).
2. The stay cable maintenance trolley according to claim 1, further comprising a control system in communication connection with the winch (7) and the working platform (1).
3. The stay cable maintenance trolley according to claim 1, further comprising auxiliary devices, wherein the auxiliary devices comprise a quick stopping device, a rope breaking protection device, an overload protection device, a lifting limit device, a descending anti-collision protection device, a walking limit device, a damping slow descending device, a phase sequence protection device, an overload protection device and a communication alarm device.
4. The stay cable maintenance trolley as claimed in claim 1, wherein the first guide support wheel set (201) comprises an upper change gear, a lower change gear, a left guide wheel and a right guide wheel; the second guide supporting wheel set (301) comprises an upper change gear, a lower change gear and a left guide wheel and a right guide wheel.
5. The stay cable maintenance trolley as claimed in claim 1, wherein the first brake (202) comprises an open state and a braking state, when the first brake (202) is in the open state, a distance is kept between a brake pad of the first brake (202) and the stay cable, and when the first brake (202) is in the braking state, the brake pad of the first brake (202) is tightly attached to the stay cable; the second brake (302) comprises an opening state and a braking state, when the second brake (302) is in the opening state, a distance is kept between a brake pad of the second brake (302) and the stay cable, and when the second brake (302) is in the braking state, the brake pad of the second brake (302) is tightly attached to the stay cable.
6. The stay cable maintenance trolley as claimed in claim 5, further comprising an air pump (6) disposed in the working platform (1), wherein the air pump (6) is engaged with the first air cylinder (203) for switching the braking state and the opening state of the first brake (202), and the air pump (6) is engaged with the second air cylinder (303) for switching the braking state and the opening state of the second brake (302).
7. The stay cable maintenance trolley as claimed in claim 5, wherein the working state of the stay cable maintenance trolley comprises a winch traction state and a braking lifting state, in the winch traction state, the first brake (202) and the second brake (302) of the stay cable maintenance trolley are both in an open state, and the winch (7) controls the movement of the stay cable maintenance trolley through a winch traction rope (8).
8. The stay cable maintenance trolley as claimed in claim 5, wherein the working state of the stay cable maintenance trolley comprises a winch traction state and a braking lifting state, in the braking lifting state, the winch (7) stops working, the first brake (202) is in an open state, the second brake (302) is in a braking state, the electric push rod (4) drives the first brake (202) to move on the stay cable when extending or contracting, and the first brake (202) drives the working platform (1) to ascend or descend.
9. A stay cable service trolley according to claim 8, wherein the climbing of the stay cable service trolley in the braked ascent state comprises the steps of:
a 1: the first brake (202) and the second brake (302) are switched to a braking state;
a 2: the first brake (202) is switched to an open state, the second brake (302) is switched to a brake state, the electric push rod (4) extends to the maximum length, and the first brake (202) drives the working platform (1) to climb;
a 3: the first brake (202) is switched to a braking state, the second brake (302) is switched to an opening state, and the electric push rod (4) is contracted to a minimum length;
a 4: step a1 is repeatedly performed.
10. A stay cable service trolley according to claim 8, wherein the lowering of the stay cable service trolley in the brake up and down condition comprises the steps of:
b 1: the first brake (202) and the second brake (302) are switched to a braking state;
b 2: the second brake (302) is switched to an opening state, the first brake (202) is switched to a braking state, and the electric push rod (4) extends to the maximum length;
b 3: the second brake (302) is switched to a braking state, the first brake (202) is switched to an opening state, the electric push rod (4) contracts to the minimum length, and the first brake (202) drives the working platform (1) to descend;
b 4: step b1 is repeatedly executed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143057.9A CN112211097A (en) | 2020-10-23 | 2020-10-23 | Stay cable maintenance trolley |
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|---|---|---|---|
| CN202011143057.9A CN112211097A (en) | 2020-10-23 | 2020-10-23 | Stay cable maintenance trolley |
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| CN112211097A true CN112211097A (en) | 2021-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969546A (en) * | 2021-11-11 | 2022-01-25 | 无锡金诚工程技术服务有限公司 | Manned maintenance platform for external traction type stay cable |
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| EP2298998A2 (en) * | 2009-09-18 | 2011-03-23 | Paul Kristen, Inc. | Cable-panel connector for bridge platform or other scaffolding |
| CN202416171U (en) * | 2012-01-11 | 2012-09-05 | 上海通筑机电设备有限公司 | Stay cable single cable suspension platform |
| CN104894957A (en) * | 2014-03-03 | 2015-09-09 | 长沙大方精密机电有限公司 | Regulable climbing device with deviation prevention function for detecting defect of bridge guy cable |
| CN104131511A (en) * | 2014-07-14 | 2014-11-05 | 武汉恒兴通检测有限公司 | Cable rope detection robot based on parallelogram independent suspension |
| CN208121566U (en) * | 2018-03-26 | 2018-11-20 | 无锡市傲世机械制造有限公司 | Cableway apparatus for examination and repair |
| CN210243146U (en) * | 2019-05-05 | 2020-04-03 | 江苏法尔胜缆索有限公司 | Push of suspension cable pushes away climbing car device |
| CN110295544A (en) * | 2019-07-29 | 2019-10-01 | 武汉冠油科技有限公司 | A kind of rotation detecting bridge cable outer cross section shape is creeped detector |
| CN111041981A (en) * | 2019-11-29 | 2020-04-21 | 中交第二航务工程局有限公司 | Manned maintenance trolley for parallel steel wire stay cables |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113969546A (en) * | 2021-11-11 | 2022-01-25 | 无锡金诚工程技术服务有限公司 | Manned maintenance platform for external traction type stay cable |
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