Elevator for bridge construction and construction method thereof

Abstract

The invention relates to the technical field of elevators and particularly discloses an elevator for bridge construction and a construction method thereof.The elevator for bridge construction comprises a supporting frame, a lifting platform, a steel cable, a winch and a cleaning assembly, the cleaning assembly comprises a mounting base, a fixing base, a sliding shell, a detection rod and a cleaning rod, the mounting base is arranged on the supporting frame, and the fixing base is arranged on the supporting frame; the fixing seat is arranged on the mounting seat, the steel cable penetrates through the fixing seat, the cleaning rods are distributed on the fixing seat at intervals and are in sliding fit with the fixing seat, a driving mechanism is arranged on the fixing seat, and the detection rod is in sliding fit in the fixing seat and is in friction fit with the steel cable. The sliding shell is arranged on the mounting seat in a sliding fit manner; according to the elevator for bridge construction and the construction method of the elevator, the steel cable can be cleaned when lubricating oil of the steel cable is insufficient, and excessive oil sludge is prevented from being gathered in gaps of the steel cable.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting machines, and particularly relates to a hoisting machine for bridge construction and its construction method. Background Art

[0002] A hoisting machine is a commonly used device in bridge construction. The hoisting machine is used to lift various heavy objects from the bottom of the bridge to the bridge surface. It consists of a support system, a lifting system, and a control system. The support system is generally a frame structure composed of columns and tie rods. The lifting system is generally a jack or a winch. When using a winch as the lifting system, a steel cable is wound around the winch. The steel cable is composed of multiple strands of steel wires twisted together. The steel cable is connected to the lifting platform. By winding the steel cable with the winch, the lifting platform is lifted upward.

[0003] In some bridge construction operations, precast box girders can be made on the bridge surface. During the construction process, it is necessary to lift a concrete transport vehicle to the bridge surface. Since the jack hoisting machine is inconvenient to install and has a high cost, a winch hoisting machine is generally used. However, after long-term use, the lubricating grease on the surface of the steel cable is severely lacking, which is likely to cause damage to the steel wire rope and pose a safety hazard. If an excessive amount of lubricating oil is applied, a large amount of sludge will be generated.

[0004] The Chinese patent document with the authorization announcement number of CN118405598B discloses a cleaning and nursing device for the steel wire rope of a crane. The device includes a trolley, a cross beam, and legs. An active member that can move synchronously and in the same direction as the trolley is provided under the cross beam. The active member is a rectangular cavity structure formed by splicing a top plate, a bottom plate, and several side plates. Several upper through holes corresponding to and adapted to the steel wire ropes of the hoisting equipment one by one are provided on the surface of the top plate. Several lower through holes corresponding to the several upper through holes one by one and adapted to the steel wire ropes are provided on the surface of the bottom plate. A coating mechanism for applying lubricating grease to the steel wire rope is provided between each corresponding upper through hole and lower through hole. A cleaning mechanism for cleaning and scraping dirt from the steel wire rope in the state of winding and rising is provided under each lower through hole.

[0005] Through the synchronous movement following the trolley of the hoisting equipment, the above-mentioned patent can not only realize the real-time cleaning of dust impurities or dirt on the surface of the steel wire rope during the hoisting operation of the hoisting equipment, but also apply lubricating grease to the surface of the steel wire rope as needed. However, since the steel cable is formed by twisting multiple strands of steel wire ropes together, the steel cable is not a cylindrical structure, and there are inwardly concave gaps between adjacent steel wire ropes. The above-mentioned cleaning mechanism cannot clean the gaps between the steel wire ropes. The sediment adhered to the surface of the steel cable contacts the lubricating oil to generate sludge, which reduces the lubricating fluid between the steel wire ropes, increases the friction between the steel wire ropes, and is likely to damage the steel cable. Summary of the Invention

[0006] The present invention provides a hoist for bridge construction and its construction method, aiming to solve the problem in the related art that the sludge in the stranded gap of the steel wire rope cannot be cleaned during the use of the hoist.

[0007] The hoist for bridge construction of the present invention includes: a support frame, a lifting platform, a steel cable, and a winch; The support frame is supported on the foundation, the winch is arranged beside the support frame, the lifting platform is slidably fitted in the support frame, one end of the steel cable is wound around the winch, and the other end passes through a guide pulley and is connected to the lifting platform; A cleaning assembly is further provided. The cleaning assembly includes a mounting seat, a fixed seat, a sliding outer shell, a detection rod, and a cleaning rod. The mounting seat is arranged on the support frame. The fixed seat is circular and fixedly arranged on the mounting seat. The steel cable passes through the fixed seat. A mating ring is rotatably fitted on the fixed seat. A plurality of the cleaning rods are spaced apart on the mating ring and are slidably fitted with the mating ring. The cleaning rod can extend into the gap on the side wall of the steel cable. A driving mechanism is arranged on the fixed seat. The driving mechanism is used to drive the cleaning rod to move. The detection rod is slidably fitted in the fixed seat and is in frictional contact with the steel cable. The sliding outer shell is slidably fitted on the mounting seat and is connected to the mounting seat through a first elastic member. The detection rod can push the sliding outer shell downward, so that the sliding outer shell is separated from the fixed seat, and then the driving mechanism can operate.

[0008] Beneficial effects: One end of the steel cable is wound around the winch, and the other end is fixedly connected to the lifting platform after passing through the cleaning assembly. The winch controls the upward or downward movement of the lifting platform by winding the steel cable, so that the steel cable can move up and down relative to the cleaning assembly. If there is insufficient lubricating oil in some areas of the steel cable, when the steel cable moves downward relative to the cleaning assembly, the frictional force between the area with insufficient lubricating oil and the detection rod will increase. Under the action of the frictional force, the steel cable will drive the detection rod to move downward. The detection rod moves downward and pushes the sliding outer shell downward, thereby releasing the limit on the driving mechanism. The driving mechanism drives the cleaning rod to extend out of the fixed seat. The cleaning rod extends into the gap of the steel cable and scrapes the sludge in the gap of the steel cable, realizing the removal of the sludge in the gap of the steel cable. When the lubricating oil on the steel cable is normal, the lubricating oil will reduce the frictional force between the steel cable and the detection rod, so that the steel cable slides relative to the detection rod and the detection rod remains stationary, thus realizing the cleaning of the steel cable as needed and avoiding damage to the steel cable caused by the long-term scraping of the cleaning rod on the steel cable.

[0009] Preferably, the driving mechanism includes a driving rod, a driving ring and a driving gear. The driving rod is slidably fitted in the fixed seat and connected to the fixed seat through a second elastic member. The driving rod can extend out of the fixed seat and can abut against the sliding outer shell. The driving ring is slidably fitted in the fixed seat and is spaced from the driving rod. The driving ring can abut against the cleaning rod. The driving gear is arranged between the driving rod and the driving ring and meshes with the driving rod and the driving ring respectively. The cleaning rod is connected to the mating ring through a return spring.

[0010] Preferably, a heater is further provided on the fixed seat, and a sensor is provided on the sliding outer shell. The detection rod can abut against the sensor, so that the sensor emits an electric signal, and the heater can receive the electric signal, so as to heat the steel cable.

[0011] The effect is that the heater can heat the steel cable, so that the sludge at the gap of the steel cable is convenient for the cleaning rod to remove the sludge in the gap of the steel cable.

[0012] Preferably, a plurality of suction holes are provided on the mating ring at intervals along its circumferential direction. An annular passage is provided in the fixed seat, and the annular passage communicates with each suction hole. A sewage discharge pipe is further provided on the fixed seat. One end of the sewage discharge pipe communicates with the annular passage, and the other end thereof communicates with an external pump.

[0013] The effect is that the pump forms a negative pressure in the annular passage through the sewage discharge pipe. Under the action of the negative pressure, the liquid sludge attached to the steel cable can enter the annular passage through the suction holes and be discharged from the sewage discharge pipe. This process can suck out the residual sludge attached to the steel cable and prevent the sludge from remaining on the steel cable.

[0014] Preferably, the end face of the detection rod has an inwardly concave arc groove, and the arc groove can be in close contact with the steel cable.

[0015] The effect is that the provision of the inwardly concave arc groove can increase the contact area between the detection rod and the steel cable, thereby preventing the friction force between the detection rod and the steel cable from being too small to overcome the elastic force of the first elastic member.

[0016] Preferably, a clamping mechanism is provided on the sliding housing. Two clamping mechanisms are respectively arranged at the upper and lower ends of the sliding housing. The clamping mechanism includes a rotating ring, a first clamping block, a second clamping block and an electric push rod. The rotating ring is rotationally fitted on the sliding housing. A driving member is arranged in the sliding housing and is used to drive the rotating ring to rotate. The first clamping block and the second clamping block are both slidably fitted on the rotating ring and are symmetrically distributed about the center of the rotating ring. There are two electric push rods, both arranged on the rotating ring. The two electric push rods are respectively connected to the first clamping block and the second clamping block. The first push rod pushes the first clamping block and the second clamping block to approach each other, so as to clamp the steel cable.

[0017] The effect is that the driving member and the electric push rod can receive the electrical signals sent by the sensor. The electric push rod pushes the first clamping block and the second clamping block to approach each other and clamp the steel cable. Then the driving member drives the rotating ring to rotate, twisting the steel cable, so that the steel cable is relaxed and the gap of the steel cable is increased, facilitating the cleaning rod to clean the gap of the steel cable.

[0018] Preferably, an oil storage ring is provided on the fixed seat. The interior of the oil storage ring is hollow. An oil delivery pipe is provided on the oil storage ring and is communicated with an external oil tank. A brush is provided on the oil storage ring. Lubricating oil is stored in the oil storage ring, and the lubricating liquid can penetrate into the brush. The brush can abut against the steel cable.

[0019] Preferably, the support frame is composed of a plurality of columns and tie rods, and the height of the support frame can be changed according to needs.

[0020] A construction method of a hoist for bridge construction, which is applied to the hoist for bridge construction described above, includes the following steps: The first step is to set the base. A plurality of cement mixing piles are set on the ground at the position of the hoist platform, and a concrete foundation is set on the cement mixing piles. The second step is to install the first section of the hoist. Use an external lifting device to hoist the columns one by one. The bottom end of the first section of the column is firmly connected to the foundation through embedded anchor bolts. The third step is to install the lifting platform. Install guide rails on the support frame and slidably fit the lifting platform on the guide rails. The fourth step is to install the standard section of the support frame. The standard section of the support frame is installed synchronously with the lifting platform. First, install the vertical rods, horizontal tie rods and inclined tie rods to form a frame structure on the support frame base, and install the guide wheels while installing the lifting platform. The fifth step is to set the winch and the steel cable. The winch is fixedly installed on a flat and solid foundation and needs to be far away from the dangerous operation area. One end of the steel cable is wound around the winch. The steel cable bypasses the guide wheel and is fixedly connected to the lifting platform.

[0021] Beneficial effects: By setting the base, the foundation of the elevator is strengthened to prevent the elevator from sinking during operation. The elevator is assembled from multiple standard sections, and each standard section is composed of columns and tie rods, so that the number of standard sections can be determined according to needs, and then the height of the elevator can be adjusted. The lifting platform is installed synchronously with the standard section, which can save time and improve construction efficiency.

[0022] Preferably, in the fourth step, a plurality of cleaning components are installed on the top of the support frame, and each steel cable passes through the corresponding cleaning component and is connected to the lifting platform.

[0023] Adopting the above technical solutions, the beneficial effects of the present invention are as follows: For the elevator for bridge construction and its construction method of the present invention, one end of the steel cable is wound on the winch, and the other end passes through the cleaning component and is fixedly connected to the lifting platform. The winch controls the upward or downward movement of the lifting platform by winding the steel cable, so that the steel cable can move up and down relative to the cleaning component. If there is insufficient lubricating oil in some areas of the steel cable, when the steel cable moves downward relative to the cleaning component, the friction between the area with insufficient lubricating oil and the detection rod will increase. Under the action of the friction, the steel cable will drive the detection rod to move downward. The detection rod moves downward and pushes the sliding housing downward, thereby releasing the limit on the driving mechanism. The driving mechanism drives the cleaning rod to extend out of the fixed seat, and the cleaning rod extends into the gap of the steel cable and scrapes the sludge in the gap of the steel cable, realizing the removal of the sludge in the gap of the steel cable. When the lubricating oil on the steel cable is normal, the lubricating oil will reduce the friction between the steel cable and the detection rod, so that the steel cable slides relative to the detection rod, and the detection rod remains stationary, thus realizing the cleaning of the steel cable as needed and avoiding damage to the steel cable caused by the cleaning rod scraping the steel cable for a long time. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the elevator for bridge construction according to an embodiment of the present invention.

[0025] Figure 2 is a schematic structural diagram of the cleaning component according to an embodiment of the present invention.

[0026] Figure 3 is a cross-sectional view of the cleaning component according to an embodiment of the present invention.

[0027] Figure 4 is a cross-sectional view of the cleaning component from another perspective according to an embodiment of the present invention.

[0028] Figure 5 is a cross-sectional view of the fixed seat according to an embodiment of the present invention.

[0029] Figure 6 is a front view of the driving mechanism according to an embodiment of the present invention.

[0030] Figure 7It is a schematic structural diagram of the driving ring according to an embodiment of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the clamping mechanism according to an embodiment of the present invention.

[0032] Figure 9 It is a cross-sectional view of the oil storage ring according to an embodiment of the present invention.

[0033] Figure 10 It is a top view of the oil storage ring according to an embodiment of the present invention.

[0034] Reference numerals: 1000, support frame; 2000, lifting platform; 3000, steel cable; 4000, winch; 5000, cleaning assembly; 1, mounting seat; 2, fixed seat; 3, sliding housing; 31, first elastic member; 4, detection rod; 5, mating ring; 6, cleaning rod; 71, driving rod; 72, driving ring; 73, driving gear; 74, second elastic member; 75, return spring; 8, heater; 9, sensor; 101, suction hole; 102, annular passage; 103, sewage pipe; 11, clamping mechanism; 111, rotating ring; 112, driving member; 113, first clamping block; 114, second clamping block; 115, electric push rod; 121, oil storage ring; 122, brush; 123, oil delivery pipe. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0036] As Figures 1 to 10 shown, the hoist for bridge construction of the present invention includes: a support frame 1000, a lifting platform 2000, a steel cable 3000, a winch 4000, and a cleaning assembly 5000. Among them, the support frame 1000 is supported on the foundation, the lifting platform 2000 is slidably fitted on the support frame 1000, the winch 4000 pulls the lifting platform 2000 to move up and down through the steel cable 3000, and the cleaning assembly 5000 is used to clean the steel cable 3000.

[0037] Specifically, as Figure 1 shown, the support frame 1000 is composed of a plurality of columns and tie rods. The tie rods include horizontal tie rods and inclined tie rods. The plurality of columns and the plurality of horizontal tie rods and inclined tie rods form a rectangular frame structure.

[0038] The support frame 1000 is provided with a slide rail extending in the up and down direction. The lifting platform 2000 is slidably engaged with the support frame 1000 through the slide rail. The winch 4000 is fixedly arranged beside the support frame 1000. The support frame 1000 is provided with a guide pulley. The steel cable 3000 is composed of multiple strands of steel wire ropes twisted together. One end of the steel cable 3000 is wound around the winch 4000, and the other end of the steel cable 3000 bypasses the guide pulley and is fixedly connected to the top end of the lifting platform 2000. The winch 4000 controls the up and down movement of the lifting platform 2000 by pulling the steel cable 3000.

[0039] As Figures 2 to 7As shown, the cleaning assembly 5000 includes a mounting base 1, a fixing base 2, a sliding housing 3, a detection rod 4, and a cleaning rod 6. The mounting base 1 is an L-shaped plate, and the mounting base 1 is detachably arranged on the support frame 1000 through bolts. The sliding housing 3 is slidably fitted on the mounting base 1. The bottom end of the sliding housing 3 is elastically connected to the mounting base 1 through a first elastic member 31. The first elastic member 31 is an elastic column. The top end of the first elastic member 31 is fixedly connected to the sliding housing 3, and its bottom end is fixedly connected to the mounting base 1. The sliding housing 3 can move up and down relative to the mounting base 1. The fixing base 2 is located inside the sliding housing 3 and is fixedly arranged on the mounting base 1. The fixing base 2 is a cylindrical structure. The fixing base 2 is sleeved on the periphery of the steel cable 3000. The detection rod 4 is an L-shaped rod and is slidably fitted inside the fixing base 2. Its bottom end passes through the fixing base 2 and can abut against the bottom surface of the sliding housing 3. The top end of the detection rod 4 abuts against the steel cable 3000, and the contact part between the detection rod 4 and the steel cable 3000 has an inwardly concave arc groove. The steel cable 3000 is in frictional cooperation with the detection rod 4. A mating ring 5 is rotatably fitted inside the fixing base 2. A plurality of cleaning rods 6 are all arranged on the mating ring 5 and are evenly spaced along the circumference of the mating ring 5. Each cleaning rod 6 is slidably fitted with the mating ring 5. The cleaning rod 6 is elastically connected to the mating ring 5 through a return spring 75. One end of the return spring 75 is fixedly connected to the outer end of the cleaning rod 6, and the other end of the return spring 75 is fixedly connected to the mating ring 5. The cleaning rod 6 can move radially along the mating ring 5. The cleaning rod 6 can extend out of the mating ring 5 and abut against the steel cable 3000. A driving mechanism is arranged inside the fixing base 2. The driving mechanism includes a driving rod 71, a driving ring 72, and a driving gear 73. The driving rod 71 is slidably fitted inside the fixing base 2 and is elastically connected to the fixing base 2 through a second elastic member 74. The second elastic member 74 is a spring. The top end of the second elastic member 74 is fixedly connected to the driving rod 71, and the bottom end of the second elastic member 74 is fixedly connected to the fixing base 2. The driving rod 71 can move up and down relative to the fixing base 2, and when the driving rod 71 moves downward, it can pass through the bottom end of the fixing base 2 and abut against the sliding housing 3. The driving ring 72 is located inside the fixing base 2 and is spaced from the driving rod 71. The driving ring 72 is slidably fitted with the fixing base 2. The inner side wall of the driving ring 72 is a bevel structure. The inner side wall of the driving ring 72 can abut against the cleaning rod 6. The driving gear 73 is located inside the fixing base 2 and is rotatably connected to the fixing base 2. The driving gear 73 is located between the driving rod 71 and the driving ring 72 and meshes with the driving rod 71 and the driving ring 72 respectively. When the driving rod 71 moves downward, it will drive the driving ring 72 to move upward through the driving gear 73. When the driving rod 71 moves upward, it will drive the driving ring 72 to move downward through the driving gear 73.

[0040] In the initial state, under the action of the first elastic member 31, the bottom surface of the sliding housing 3 abuts against the bottom end of the fixed seat 2. At this time, the second elastic member 74 is stretched and applies a downward pressure to the driving rod 71, so that the driving rod 71 abuts against the sliding housing 3. When the steel cable 3000 moves downward, if there is insufficient lubricating oil on its surface, it will push the detection rod 4 to move downward against the elastic force of the first elastic member 31 through friction, and push the sliding housing 3 to move downward, so that the sliding housing 3 is disengaged from the bottom end of the fixed seat 2. The sliding housing 3 releases the limit on the driving rod 71, and the second elastic member 74 contracts. Under the elastic force of the second elastic member 74, the driving rod 71 moves downward and drives the driving ring 72 to move upward through the driving gear 73. The driving ring 72 gradually abuts against the cleaning rod 6 and pushes the cleaning rod 6 to move radially inward along the mating ring 5, so that the cleaning rod 6 extends out of the mating ring 5 and extends into the gap of the steel cable 3000 and abuts against the steel cable 3000. At this time, the steel cable 3000 moves downward relative to the cleaning rod 6, and the cleaning rod 6 can scrape off the sludge in the gap of the steel cable 3000.

[0041] As Figure 4 and Figure 5 shown, a heater 8 is further provided on the fixed seat 2. The heater 8 is an electric heating device in the conventional technology. The heater 8 is fixedly arranged on the fixed seat 2. The heater 8 is located above the cleaning rod 6. A sensor 9 is provided on the sliding housing 3. The sensor 9 is a pressure sensor. The detection rod 4 can contact the sensor 9. The sensor 9 can emit an electric signal, and the heater 8 can receive the electric signal emitted by the sensor 9 to control the opening and closing of the heater 8. Setting the heater 8 can melt the sludge attached to the cable, so that it is convenient for the cleaning rod 6 to scrape off the melted sludge from the gap of the cable.

[0042] As Figures 3 to 5 shown, a plurality of suction holes 101 are further provided on the mating ring 5 at intervals along its circumferential direction. An annular passage 102 is provided in the fixed seat 2. Each suction hole 101 communicates with the annular passage 102. A sewage discharge pipe 103 is fixedly arranged in the fixed seat 2. One end of the sewage discharge pipe 103 communicates with the annular passage 102, and the other end thereof communicates with an external pump. The external pump can perform pumping work through the sewage discharge pipe 103, so that a negative pressure is formed in the annular passage 102, and the melted sludge is sucked into the annular passage 102 through the suction holes 101, and then the melted sludge is pumped to the external pump through the sewage discharge pipe 103, so as to discharge the sludge from the fixed seat 2.

[0043] As Figure 3 、 Figure 4 and Figure 8As shown in the figure, a clamping mechanism 11 is provided on the sliding housing 3. The two clamping mechanisms 11 are respectively arranged at the upper end and the lower end of the sliding housing 3. The clamping mechanism 11 includes a rotating ring 111, a driving member 112, a first clamping block 113, a second clamping block 114 and an electric push rod 115. The rotating ring 111 is rotationally matched with the sliding housing 3. The driving member 112 is fixedly arranged on the sliding housing 3. The driving member 112 is a motor, and a rotating gear is fixedly arranged at its output end. The rotating gear meshes with the rotating ring 111. The driving member 112 can drive the rotating ring 111 to rotate through the rotating gear, so that the rotating ring 111 can rotate relative to the sliding housing 3 along its circumferential direction. The first clamping block 113 and the second clamping block 114 are both slidably matched on the rotating ring 111. The first clamping block 113 and the second clamping block 114 have the same structure and are symmetrically distributed. The two electric push rods 115 are both fixedly arranged in the sliding housing 3 and are respectively fixedly connected to the first clamping block 113 and the second clamping block 114. The two electric push rods 115 are used to push the first clamping block 113 and the second clamping block 114 to approach or move away from each other. The driving member 112 and the electric push rod 115 can receive the electrical signals sent by the sensor 9.

[0044] As Figures 3 to 5 , Figure 9 and Figure 10 shown in the figure, an annular cavity is provided at the bottom of the fixed seat 2. An oil storage ring 121 is arranged in the annular cavity. The oil storage ring 121 is slidably matched with the fixed seat 2. The bottom end of the oil storage ring 121 is fixedly connected to the driving rod 71. The up and down movement of the driving rod 71 can drive the up and down movement of the oil storage ring 121. The inside of the oil storage ring 121 is hollow and is filled with lubricating oil. A fixed oil delivery pipe 123 is arranged at the bottom end of the oil storage ring 121. The oil delivery pipe 123 is a flexible rubber pipe. One end of the oil delivery pipe 123 is communicated with the oil storage ring 121, and the other end is communicated with an external oil tank. The external oil tank can send the lubricating oil into the oil storage ring 121 through the oil delivery pipe 123. A plurality of brushes 122 are arranged on the inner wall of the oil storage ring 121 at intervals along its circumferential direction. The inner ends of the brushes 122 pass through the inner wall of the oil storage ring 121 and extend into the inside of the oil storage ring 121. The outer ends of the brushes 122 can contact the steel cable 3000. The lubricating oil in the oil storage ring 121 can seep out of the oil storage ring 121 through the brushes 122 and adhere to the steel cable 3000 through the brushes 122.

[0045] In the initial state, the oil storage ring 121 is located in the annular cavity, and the brush 122 contacts the side wall of the annular cavity. The driving rod 71 moves downward, and the oil storage ring 121 moves downward synchronously with the driving rod 71, so as to extend out of the fixed seat 2. At this time, the brush 122 can abut against the steel cable 3000. The driving rod 71 moves upward, and the oil storage ring 121 moves upward synchronously with the driving rod 71, so as to be able to retract the oil storage ring 121 into the annular cavity and make the brush 122 separate from the steel cable 3000.

[0046] The implementation principle of the elevator for bridge construction in the embodiment of the present invention is as follows: The cleaning assembly 5000 is arranged on the support frame 1000, and the steel cable passes through the cleaning assembly 5000. When the steel cable moves downward, if there is a part of the steel cable with insufficient lubricating oil, when this part of the steel cable 3000 contacts the detection rod 4, due to insufficient lubricating oil, under the action of friction, the steel cable 3000 drives the detection rod 4 to move downward. The detection rod 4 presses the sensor 9 and drives the sliding housing 3 to move downward against the elastic force of the first elastic member 31, so that the sliding housing 3 moves downward synchronously with the steel cable 3000. The sensor 9 emits an electrical signal, thereby starting the heater 8. The heater 8 heats the steel cable 3000, and then can melt the sludge on the steel cable 3000. The driving member 112 and the electric push rod 115 can also receive the electrical signal emitted by the sensor 9. The electric push rod 115 drives the first clamping block 113 and the second clamping block 114 to clamp the steel cable 3000. Each driving member 112 drives the rotating rings 111 of the two clamping mechanisms 11 to rotate in the opposite direction respectively, and twists the steel cable 3000 through the corresponding first clamping block 113 and second clamping block 114, so as to relax the steel cable 3000, and then can increase the gap on the steel cable 3000. When the sliding housing 3 moves downward, the sliding housing 3 is separated from contact with the driving rod 71. The driving rod 71 moves downward under the action of the second elastic member 74, and drives the driving ring 72 to move upward through the driving gear 73. During the upward movement of the driving ring 72, it abuts against the cleaning rod 6 and pushes the cleaning rod 6 to move radially inward along the fixed seat 2 against the elastic force of the return spring 75, so that the cleaning rod 6 extends out of the mating ring 5 until the cleaning rod 6 extends into the gap of the steel cable 3000 and abuts against the steel cable 3000. The cleaning rod 6 can move along the gap of the steel cable 3000 during the downward movement of the steel cable 3000. During this process, the mating ring 5 rotates relative to the fixed seat 2 under the push of the cleaning rod 6. The external pump is started, and a negative pressure is formed in the annular channel through the sewage discharge pipe 103. The scraped sludge and the remaining sludge on the steel cable 3000 will enter the annular channel through the suction holes 101 under the action of the negative pressure and be discharged through the sewage discharge pipe 103. When the driving rod 71 moves downward, the oil storage ring 121 will move downward synchronously with the driving rod 71. The oil storage ring 121 extends out of the annular cavity, so that the brush 122 can contact the steel cable 3000. The lubricating oil in the oil storage ring 121 oozes out through the brush 122 from the oil storage ring 121, and the brush 122 can evenly attach the lubricating oil to the steel cable 3000.

[0047] When the detection rod 4 is in normal partial contact with the steel cable 3000, the friction between the detection rod 4 and the steel cable 3000 is reduced due to the effect of the lubricating oil, the pressure of the detection rod 4 on the pressure sensor 9 is reduced, and the pressure sensor 9 stops sending an electrical signal, thereby turning off the heater 8, and the electric push rod 115 drives the first clamping block 113 and the second clamping block 114 to move away from each other and disengage from the steel cable 3000, thereby releasing the clamping of the steel cable 3000. Under the action of the first elastic member 31, the sliding housing 3 moves upward until its bottom surface stops at the bottom end of the fixing seat 2. During the process, the sliding shell 3 stops at the driving rod 71, and the sliding shell 3 overcomes the elastic force of the second elastic member 74 to push the driving rod 71 to move upward and reset. The driving rod 71 drives the driving ring 72 to reset through the driving gear 73, and the driving ring 72 is out of contact with the cleaning rod 6. Under the action of the reset spring 75, the cleaning rod 6 is retracted into the matching ring 5, thereby being out of contact with the steel cable 3000. When the driving rod 71 moves upward, it also drives the oil storage ring 121 to move upward, so that the oil storage ring 121 is retracted into the annular cavity, so that the brush 122 is out of contact with the steel cable 3000.

[0048] The construction method of the bridge construction hoist according to the embodiment of the present invention is applied to the bridge construction hoist according to the embodiment of the present invention, and comprises the following steps: The first step is to set up the base and cement mixing piles on the ground. The diameter of the cement mixing piles is 50 cm, the pile spacing is 1.3 meters, and the pile length is 20 meters. A cast-in-place concrete foundation is used between the lifting station and the cement mixing piles to transfer the load to the pile body. There are 4 cement mixing piles under each concrete foundation, and the mixing piles extend 20 cm into the concrete foundation.

[0049] The second step is to install the base of the support frame 1000. The columns are hoisted one by one with external hoists. The hoist is divided into two standard sections. A single column is about 15 meters long. The bottom of the first column is firmly connected to the concrete foundation through pre-buried anchor bolts and connected to each other through tie rods. When installing the first column, the second column and the tie rod are synchronously assembled on the ground to complete the frame.

[0050] The third step is to install the lifting platform 2000. When installing the first section of the elevator, install the guide rail on the column. After the first section is installed, assemble the lifting platform 2000 on the guide rail, and install the side rails, insurance, top net, docking device, discharge port, feed door and outer door in sequence according to the direction.

[0051] The fourth step is to install the standard section of the elevator, fix the guide wheel and the cleaning component 5000 on the standard section of the elevator, then hoist the assembled standard section of the elevator above the first section of the elevator, and fix the standard section of the elevator and the first section of the elevator together by tightening bolts.

[0052] Step 5: Set up the hoist 4000 and the steel cable 3000. Fix the hoist 4000 beside the support frame 1000. Wind one end of the steel cable 3000 around the hoist 4000. The other end of the steel cable 3000 bypasses the guide pulley and passes through the cleaning assembly 5000, and then is fixedly connected to the lifting platform 2000.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An elevator for bridge construction, comprising: Support frame, lifting platform, steel cable and winch; The support frame is supported on the foundation, the winch is arranged beside the support frame, the lifting platform is slidably fitted in the support frame, one end of the steel cable is wound on the winch, and the other end thereof passes through a guide pulley and is connected to the lifting platform; It is characterized in that a cleaning assembly is further provided, the cleaning assembly includes a mounting seat, a fixed seat, a sliding housing, a detection rod and a cleaning rod, the mounting seat is arranged on the support frame, the fixed seat is in a circular ring shape and is fixedly arranged on the mounting seat, the steel cable passes through the fixed seat, a mating ring is rotatably fitted on the fixed seat, a plurality of the cleaning rods are spaced apart on the mating ring and are slidably fitted with the mating ring, the cleaning rod can extend into a gap on the side wall of the steel cable, a driving mechanism is arranged on the fixed seat, the driving mechanism is used for driving the cleaning rod to move, the detection rod is slidably fitted in the fixed seat and is in frictional fit with the steel cable, the sliding housing is slidably fitted on the mounting seat and is connected to the mounting seat through a first elastic member, the detection rod can push the sliding housing to move downward, so that the sliding housing is separated from the fixed seat, and further the driving mechanism can be operated.

2. The hoist for bridge construction according to claim 1, wherein The driving mechanism includes a driving rod, a driving ring and a driving gear, the driving rod is slidably fitted in the fixed seat and is connected to the fixed seat through a second elastic member, the driving rod can extend out of the fixed seat and can abut against the sliding housing, the driving ring is slidably fitted in the fixed seat and is spaced apart from the driving rod, the driving ring can abut against the cleaning rod, the driving gear is arranged between the driving rod and the driving ring and is respectively engaged with the driving rod and the driving ring, and the cleaning rod is connected to the mating ring through a return spring.

3. The hoist for bridge construction according to claim 2, characterized in that, A heater is further arranged on the fixed seat, a sensor is arranged on the sliding housing, the detection rod can abut against the sensor, so that the sensor emits an electric signal, and the heater can receive the electric signal, so as to heat the steel cable.

4. The hoist for bridge construction according to claim 3, wherein, A plurality of suction holes are arranged on the mating ring at intervals along its circumferential direction, an annular passage is arranged in the fixed seat, the annular passage is communicated with each suction hole, and a sewage discharge pipe is further arranged on the fixed seat, one end of the sewage discharge pipe is communicated with the annular passage, and the other end thereof is communicated with an external pump.

5. The hoist for bridge construction according to claim 4, characterized in that, The end face of the detection rod has an inwardly concave arc groove, and the arc groove can be in close contact with the steel cable.

6. The hoist for bridge construction according to claim 5, characterized in that, A clamping mechanism is provided on the sliding housing. Two clamping mechanisms are respectively provided at the upper and lower ends of the sliding housing. The clamping mechanism includes a rotating ring, a first clamping block, a second clamping block and an electric push rod. The rotating ring is rotatably fitted on the sliding housing. A driving member is provided in the sliding housing, and the driving member is used to drive the rotating ring to rotate. The first clamping block and the second clamping block are both slidably fitted on the rotating ring, and the two are symmetrically distributed about the center of the rotating ring. There are two electric push rods, both of which are provided on the rotating ring. The two electric push rods are respectively connected to the first clamping block and the second clamping block. The first push rod pushes the first clamping block and the second clamping block to approach each other, so as to clamp the steel cable.

7. The hoist for bridge construction according to claim 6, wherein, An oil storage ring is provided on the fixed seat. The interior of the oil storage ring is hollow. An oil delivery pipe is provided on the oil storage ring. The oil delivery pipe is communicated with an external oil tank. A brush is provided on the oil storage ring. Lubricating oil is stored in the oil storage ring, and the lubricating liquid can penetrate into the brush, and the brush can abut against the steel cable.

8. The hoist for bridge construction according to claim 7, characterized in that, The support frame is composed of a plurality of columns and tie rods, and the height of the support frame can be changed as needed.

9. A construction method of a hoist for bridge construction, applied to the hoist for bridge construction according to claim 8, characterized in that, It includes the following steps: The first step is to set the base. A plurality of cement mixing piles are set on the ground at the position of the hoist platform, and a concrete foundation is set on the cement mixing piles. The second step is to install the first section of the hoist. The columns are hoisted one by one by using an external hoisting device, and the bottom end of the first section of the column is firmly connected to the foundation through embedded anchor bolts. The third step is to install the lifting platform. Guide rails are installed on the support frame, and the lifting platform is slidably fitted on the guide rails. The fourth step is to install the standard section of the support frame. The standard section of the support frame is installed synchronously with the lifting platform. First, the vertical rods, horizontal tie rods and inclined tie rods are installed, so as to form a frame structure on the support frame base. The guide wheels are installed while installing the lifting platform. The fifth step is to set the winch and the steel cable. The winch is fixedly installed on a flat and solid foundation and needs to be far away from the dangerous operation area. One end of the steel cable is wound around the winch, the steel cable bypasses the guide wheel, and is fixedly connected to the lifting platform.

10. The construction method of the elevator for bridge construction according to claim 9, characterized in that, In the fourth step, a plurality of cleaning components are installed on the top of the support frame, and each steel cable passes through the corresponding cleaning component and is connected to the lifting platform.

Images