CN116022629A - Freight elevator with two guide rails and double lower beam structures - Google Patents
Freight elevator with two guide rails and double lower beam structures Download PDFInfo
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- CN116022629A CN116022629A CN202310339013.0A CN202310339013A CN116022629A CN 116022629 A CN116022629 A CN 116022629A CN 202310339013 A CN202310339013 A CN 202310339013A CN 116022629 A CN116022629 A CN 116022629A
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention discloses a cargo elevator with a two-guide-rail double-lower-beam structure, which belongs to the technical field of cargo elevators and comprises a car frame and a car arranged in the car frame, wherein the car frame drives the car to move; the car comprises a car bottom positioned at the bottom of the car; the bottom of sedan-chair bottom is connected through a plurality of groups of bracing subassembly that arrange in proper order from a left side to the right side between the supporting beam subassembly, through set up in the bottom of sedan-chair bottom carry and draw beam subassembly and supporting beam subassembly, carry and draw beam subassembly to the intermediate position of sedan-chair bottom, and supporting beam subassembly then supports the front end position and the rear end position of sedan-chair bottom through bracing subassembly, and the both sides of sedan-chair bottom are then fixed through diagonal bracing connecting upright post, thereby make the sedan-chair bottom obtain the support of front and back, control, upper and lower three dimension fixed, make the sedan-chair bottom have stronger bearing capacity, avoid the sedan-chair bottom to appear the problem of warping in the use that carries cargo.
Description
Technical Field
The invention belongs to the technical field of cargo lifts, and particularly relates to a cargo lift with a two-guide-rail double-lower-beam structure.
Background
Freight elevators are designed mainly for transporting goods, and with the development of modern industry, the demand for freight elevators is increasing and the load carrying capacity of freight elevators is increasing. In order to meet the requirement of the large-load goods elevator, the applicant has developed a large-load goods elevator before, and patent grant bulletin number: CN110884985B, including the computer lab at top, through tow rope connection's sedan-chair frame and counterweight, the computer lab includes main spandrel girder, vice spandrel girder, counterweight spandrel girder subassembly, two sets of sedan-chair spandrel girder subassemblies, main spandrel girder and vice spandrel girder, counterweight spandrel girder, vice spandrel girder and two sets of sedan-chair spandrel girder subassembly set up in main spandrel girder and vice spandrel girder, main spandrel girder, vice spandrel girder and two sets of sedan-chair spandrel girder set up the installing frame structure of computer lab, counterweight spandrel girder subassembly sets up in the outside of one of them set of sedan-chair spandrel girder subassembly, counterweight spandrel girder subassembly, two sets of sedan-chair spandrel girder subassembly form three and arrange the structure, install the hauler on the main spandrel girder, the hauler sets up in being close to the one end of counterweight spandrel girder subassembly, vice spandrel girder, two sets of sedal-chair spanned girder subassembly, be equipped with a pair of sedal girder fixed pulley in the counterweight spandrel girder subassembly; the car frame includes main sedan-chair frame, the vice sedan-chair frame that main sedan-chair frame bilateral symmetry set up, through at the bottom of the sedan-chair frame of main sedan-chair frame and vice sedan-chair frame bearing, with main sedan-chair frame and the cantilever beam that vice sedan-chair frame links to each other, install the sedan-chair top wheel in the cantilever beam, guide boots are all installed to the upper and lower extreme of main sedan-chair frame and vice sedan-chair frame, the bottom of main sedan-chair frame is equipped with one set of safety tongs, be equipped with oblique pull rod between main sedan-chair frame and the sedan-chair at the bottom of, main sedan-chair frame, sedan-chair at the bottom of oblique pull rod forms triangle-shaped reinforced structure, the outside of sedan-chair top wheel is equipped with the rail guard, the both ends at the bottom of sedan-chair are equipped with the sedan-chair portal. By arranging three car frames to bear the load capacity of the elevator, the cargo lift with the structure needs to ensure that guide shoes on the three car frames are arranged on parallel planes during installation, and the installation flatness requirement is very high.
The prior cargo lift, as shown in patent with the publication number of CN 218290062U, discloses a novel car frame structure of a heavy cargo lift, which comprises a car frame body with a back-shaped structure, wherein a car for loading is arranged in the car frame body, and bearing beams are arranged on the lower end faces of the cars at the front side and the rear side of the car frame body; the left side and the right side of the car frame body are symmetrically provided with oblique pulling assemblies which are connected with the bearing cross beam; the lower parts of the left side and the right side of the car frame body are provided with extension frames which extend downwards, and the extension frames are provided with oblique support assemblies which extend upwards and are connected with the bearing cross beams. The freight elevator only has one car frame, but the car frame structure has very limited bearing capacity for the car, and is difficult to meet the requirement of large bearing capacity of the large-load elevator. When the car frame structure is used, the car bottom is easy to deform.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a cargo lift with a two-guide-rail double-lower-beam structure.
The technical scheme adopted for solving the technical problems is as follows:
the freight elevator with the double-guide-rail double-lower-beam structure comprises a car frame and a car arranged in the car frame, wherein the car frame drives the car to move; the car comprises a car bottom positioned at the bottom of the car; the car frame comprises two upright posts, an upper beam assembly, a lifting beam assembly and a supporting beam assembly, wherein the two upright posts are respectively arranged on two sides of the car, the upper beam assembly is arranged at the top of each upright post, the lifting beam assembly is arranged at the bottom of each upright post, the lifting beam assembly is arranged in parallel from top to bottom, the car is arranged between the upper beam assembly and the lifting beam assembly, the top of the lifting beam assembly is supported at the bottom of the car bottom, the bottom of the car bottom is connected with the supporting beam assembly through a plurality of groups of diagonal bracing assemblies which are sequentially arranged from left to right, each group of diagonal bracing assemblies comprises a front supporting rod and a rear supporting rod, one end of the front supporting rod is fixed on the front side of the supporting beam assembly, and the other end of the front supporting rod extends to the front end of the car bottom and is fixed to the bottom of the car bottom; one end of the rear supporting rod is fixed on the rear side of the supporting beam assembly, and the other end of the rear supporting rod extends towards the rear end of the car bottom and is fixed to the bottom of the car bottom; the diagonal bracing assembly is positioned between the two upright posts, and the side part of the car bottom is connected with the upright posts through diagonal braces.
In the invention, the car bottom comprises a panel, a bottom plate and a steel frame layer, wherein the steel frame layer is positioned between the panel and the bottom plate, the steel frame layer comprises two side channel steels which are horizontally and oppositely arranged and two end channel steels which are respectively connected with two ends of the side channel steels, the two side channel steels and the two end channel steels are connected end to end through a connecting piece to form an outer frame of the steel frame layer, a cross type bearing frame used for enhancing the bearing capacity of the car bottom is arranged in the outer frame, and the cross type bearing frame is of an X-shaped structure.
In the invention, the end part of the crossed bearing frame is fixedly connected with a connecting piece, the connecting piece comprises a first connecting end for inserting and connecting the end part of the side channel steel, a second connecting end for inserting and connecting the end part of the end channel steel and a third connecting end for inserting and connecting the end part of the bearing frame in the crossing process, the first connecting end and the second connecting end are vertically arranged, and the third connecting end is positioned at an included angle between the first connecting end and the second connecting end.
In the invention, the supporting beam assembly comprises two lower supporting beams which are arranged in a mirror symmetry way, the end parts of the two lower supporting beams are fixedly connected with the upright posts, the bottoms of the two lower supporting beams are provided with a plurality of connecting plates, and the tops of the two lower supporting beams are connected with the lifting beam assembly.
In the invention, the front support rod and the rear support rod are respectively connected to the side surfaces of two lower support beams, a plurality of support columns are arranged between the two lower support beams, the number of the support columns corresponds to that of diagonal bracing assemblies, and two ends of the support columns are respectively fixed at the inner sides of the corresponding positions where the lower support beams are connected with the front support rod and the rear support rod.
In the invention, the support column comprises a plurality of mutually clamped outer side plates, the outer side plates are sequentially clamped end to form a hollow polygonal column structure, a corner clamping sleeve is arranged at the outer side of a corner connected with the adjacent outer side plates, the corner clamping sleeve wraps the corner connected with the adjacent outer side plates, meanwhile, the corner clamping sleeve is fixedly connected with the outer side plates, and one outer side plate is provided with a glue injection hole communicated with the outside and the inner cavity of the polygonal column structure.
In the invention, the support column is clamped between the two lower support beams, gel is injected into the inner cavity of the polygonal column structure through the gel injection hole, and in the gel injection process, the gas in the inner cavity of the polygonal column structure is discharged through the gap between the support column and the lower support beams.
In the invention, one side of the outer side plate is provided with an outward protruding cutting, the other side of the outer side plate is provided with an inward recessed groove, and the structure of the cutting is mutually matched with the structure of the groove.
In the invention, a pair of end guide shoes are arranged at the top and the bottom of the car frame, an inward concave channel is arranged on the outer side wall of the upright post, the channel can be used for a guide rail to enter, a side guide shoe is arranged in the channel, and the end guide shoes and the side guide shoes on the same side of the car frame are matched with the same guide rail.
In the invention, shoe liners for contact fit with the guide rail are arranged in the end guide shoe and the side guide shoe, and the manufacturing process of the shoe liners is as follows:
firstly, manufacturing a base, processing a pouring cavity which is concave inwards on the base, wherein the opening of the pouring cavity is in a flaring structure from inside to outside, so that the pouring material at the opening is maximized;
step two, embedding a plurality of pressure sensors in a base in a dot matrix manner;
step three, casting a wear-resistant layer into the casting cavity, wherein the casting cavity is full of the wear-resistant layer;
and fourthly, adopting machining to enable the surface roughness Ra of the wear-resistant layer to be less than 0.4.
The beneficial effects of the invention are as follows: through set up and carry and draw beam assembly and supporting beam assembly in the bottom of the sedan-chair, carry and draw beam assembly to the intermediate position of bottom of the sedan-chair, and supporting beam assembly then supports the front end position and the rear end position of bottom of the sedan-chair through bracing subassembly, and the both sides of bottom of the sedan-chair are then fixed through diagonal draw bar connection stand to make the bottom of the sedan-chair obtain the support of three dimension around, about, about, make the bottom of the sedan-chair have stronger bearing capacity, avoid the sedan-chair at the bottom of the problem that appears warping in carrying cargo use.
Drawings
Fig. 1 is a perspective view of a cargo lift of the present embodiment in one view thereof;
fig. 2 is a perspective view of the freight elevator of the embodiment in another view direction;
fig. 3 is a schematic view of the bottom structure of the freight elevator of this embodiment;
FIG. 4 is a schematic view of the installation structure of the steel frame layer according to the present embodiment;
FIG. 5 is a schematic view of the structure of the support column of the present embodiment;
fig. 6 is a schematic structural view of an outer side plate of the present embodiment;
FIG. 7 is a schematic view of the structure of the end shoe of the present embodiment;
FIG. 8 is a schematic view showing the internal structure of the shoe insert of the present embodiment;
fig. 9 is a schematic diagram of the connection between the weight box and the liquid supply box according to the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 9, the embodiment discloses a cargo lift with a two-guide-rail double-lower-beam structure, which comprises a car frame and a car arranged in the car frame, wherein the car frame drives the car to move; the car comprises a car bottom 1 positioned at the bottom of the car; the car frame comprises two upright posts 2, an upper beam assembly 3, a lifting beam assembly 4 and a supporting beam assembly 5, wherein the two upright posts 2, the upper beam assembly 3, the lifting beam assembly 4 and the supporting beam assembly 5 are respectively arranged on two sides of a car, the lifting beam assembly 3, the lifting beam assembly 4 and the supporting beam assembly 5 are arranged in parallel from top to bottom, the car is arranged between the upper beam assembly 3 and the lifting beam assembly 4, the top of the lifting beam assembly 4 is supported at the bottom of the car bottom 1, the bottom of the car bottom 1 is connected with the supporting beam assembly 5 through a plurality of groups of diagonal bracing assemblies 6 which are sequentially arranged from left to right, each group of diagonal bracing assemblies 6 comprises a front supporting rod 61 and a rear supporting rod 62, one end of the front supporting rod 61 is fixed on the front side of the supporting beam assembly 5, and the other end of the front supporting rod 61 extends towards the front end of the car bottom 1 and is fixed to the bottom of the car bottom 1; one end of the rear supporting rod 62 is fixed on the rear side of the supporting beam assembly 5, and the other end of the rear supporting rod 62 extends towards the rear end of the car bottom 1 and is fixed to the bottom of the car bottom 1; the diagonal bracing assembly 6 is positioned between the two upright posts 2, and the side part of the car bottom 1 is connected with the upright posts 2 through diagonal braces 7. According to the cargo lift disclosed by the embodiment, the lifting beam assembly 4 and the supporting beam assembly 5 are arranged at the bottom of the car bottom 1, the lifting beam assembly 4 supports the middle position of the bottom of the car bottom 1, the supporting beam assembly 5 supports the front end position and the rear end position of the bottom of the car bottom 1 through the diagonal bracing assembly 6, and the two sides of the car bottom 1 are connected with the upright posts 2 through the diagonal bracing 7, so that the car bottom 1 is supported and fixed in three dimensions of front, back, left, right, up and down, the car bottom 1 has strong bearing capacity, and the problem that the car bottom 1 deforms in the cargo use process is avoided.
In this embodiment, the loading capacity of the elevator is further ensured in order to enhance the structural strength of the car bottom 1. The car bottom 1 comprises a panel 11, a bottom plate 12 and a steel frame layer 13, the steel frame layer 13 is located between the panel 11 and the bottom plate 12, the steel frame layer 13 comprises two side channel steels 131 which are horizontally arranged oppositely and two end channel steels 132 which are respectively connected with two ends of the side channel steels 131, an outer frame of the steel frame layer 13 is formed by connecting the two side channel steels 131 and the two end channel steels 132 end to end through a connecting piece 133, a crossed bearing frame 134 used for enhancing the bearing capacity of the car bottom 1 is arranged in the outer frame, the crossed bearing frame 134 is of an X-shaped structure, the end part of the crossed bearing frame 134 is fixedly connected with the connecting piece 133, the connecting piece 133 comprises a first connecting end used for inserting and connecting the end part of the side channel steels 131, a second connecting end used for inserting and connecting the end part of the bearing frame during crossing, the first connecting end is perpendicular to the second connecting end, and the third connecting end is located at an included angle between the first connecting end and the second connecting end. The connection of the side channel steel 131, the end channel steel 132 and the cross-shaped bearing frame 134 can be realized through the connecting piece 133, wherein the cross-shaped bearing frame 134 connects the diagonal line of the outer frame, so that the outer frame can be prevented from being deformed, the cross-shaped bearing frame 134 can support the inside of the outer frame, and the end of the cross-shaped bearing frame is connected with the connecting piece 133, so that the cross-shaped bearing frame is restrained with the side channel steel 131 and the end channel steel 132, and the deformation resistance of the cross-shaped bearing frame 134 is enhanced.
In this embodiment, the supporting beam assembly 5 includes two lower supporting beams 51 disposed in mirror symmetry, the end portions of the two lower supporting beams 51 are fixedly connected with the upright posts 2, the bottoms of the two lower supporting beams 51 are provided with a plurality of connecting plates 52, the bottoms of the two lower supporting beams 51 are equidistantly connected through the connecting plates 52, so that the distance between the two lower supporting beams 51 is kept equal, and the tops of the two lower supporting beams 51 are connected with the lifting beam assembly 4. The front support rods 61 and the rear support rods 62 are respectively connected to the side surfaces of the two lower support beams 51, in order to avoid deformation of the lower support beams 51 under the pressure action of the front support rods 61 or the rear support rods 62 in the use process of the elevator, a plurality of support columns 53 are arranged between the two lower support beams 51, the number of the support columns 53 corresponds to that of diagonal bracing assemblies 6, and two ends of each support column 53 are respectively fixed on the inner sides of corresponding positions where the lower support beams 51 are connected with the front support rods 61 and the rear support rods 62, so that the support columns 53 can support the positions where the front support rods 61 and the rear support rods 62 act on the lower support beams 51, and deformation of the lower support beams 51 under the pressure action of the front support rods 61 or the rear support rods 62 is avoided.
Further, although a metal column may be selected for the structure of the support column 53 to perform the basic supporting function, in the concrete implementation, since the front support bar 61 and the rear support bar 62 are connected to the lower support beam 51 at positions opposite to the positions where the two ends of the support column 53 are connected to the lower support beam 51, it is necessary to provide threaded holes in the end surfaces of the support column 53, and bolts pass through the front support bar 61 or the rear support bar 62 and then pass through the threaded holes of the lower support beam 51 to be connected to the support column 53 for locking, and when the support column 53 is required to have a large compressive capacity, it is necessary to select a material with high structural strength, and to increase the volume of the support column 53, which tends to result in a great increase in the weight of the support column 53, because the support column 53 is installed between the two lower support beams 51, and adjustment of the installation position thereof is required, if the support column 53 has a great weight, which causes a great inconvenience for installation of the support beam assembly 5, and which would increase the weight of the support beam assembly 5, which would undoubtedly affect the loading capacity in the middle of the car bottom 1, and increase in the energy consumption of the elevator. And adopt the metal cylinder to regard as support column 53, the connection stability between support column 53, lower support beam 51 and the bracing subassembly 6 also can have certain problem, and the bolt locking is connected on support column 53, and when the elevator was operated from top to bottom, support column 53 produced the lateral pressure to the bolt, and under the circumstances that the self weight of support column 53 is great, can make the bolted connection not hard up, the emergence of leading out the elevator accident. Therefore, in this embodiment, the support column 53 includes the outer side plate 531 of the mutual joint of polylith, and polylith outer side plate 531 head and tail joint in proper order forms hollow polygon prism structure, and the corner outside that adjacent outer side plate 531 connects is equipped with corner cutting ferrule 532, corner cutting ferrule 532 parcel adjacent outer side plate 531 connects the corner, seals the corner, and corner cutting ferrule 532 and outer side plate 531 fixed connection simultaneously, and glue injection hole 533 of the external world of intercommunication and polygon prism structure inner chamber has been seted up to one of them outer side plate 531. During installation, the outer side plates 531 of the support columns 53 are sequentially clamped end to form a hollow polygonal column structure, and then the corner clamping sleeve 532 is used for wrapping and fixing the corners connected with the adjacent outer side plates 531; the front support rod 61 and the rear support rod 62 are connected and fixed to the side surfaces of the two lower support beams 51 through bolts and nuts, the nuts are arranged on the inner sides of the lower support beams 51, the bolts penetrate through the front support rod 61 or the rear support rod 62 on the outer sides of the lower support beams 51 and then penetrate through the lower support beams 51, and the nuts on the inner sides of the lower support beams 51 are screwed and fixed; then, the assembled support column 53 is placed between the two lower support beams 51, the nut is located in the inner cavity of the polygonal column structure, the support column 53 is rotated to enable the glue injection hole 533 to face upwards, the bottoms of the two lower support beams 51 are fixedly connected by the connecting plate 52, the support column 53 is clamped between the two lower support beams 51, gel is injected into the inner cavity of the polygonal column structure through the glue injection hole 533, in the gel injection process, gas in the inner cavity of the polygonal column structure is discharged through a gap between the support column 53 and the lower support beam 51, the minimum passing gap of the gel adopted in the embodiment is 100 mu m, and therefore the gap between the support column 53 and the lower support beam 51 is smaller than 100 mu m, and at the moment, the gap between the support column 53 and the lower support beam 51 can only discharge internal air, and the gel cannot overflow. After gel is injected into the inner cavity of the polygonal column structure, the gel solidifies the bolts and nuts for locking the lower support beam 51 and the diagonal bracing assembly 6, so that the bolts and nuts are effectively prevented from loosening, the lower support beam 51 and the diagonal bracing assembly 6 are kept in a long-term locking state, and the installation of the support beam assembly 5 can be simplified. The gel has good elastic buffering performance, so that the large impact damage to the bolts and nuts caused by the gravity of the support column 53 can be avoided, the gel also has elastic action on the lower support beam 51, when the inclined support assembly 6 generates lateral pressure on the lower support beam 51, the support column 53 provides rigid support to the lower support beam 51, the gel provides elastic support to the lower support beam 51, and under the combined action of the support column 53 and the gel, enough supporting force is provided for the lower support beam 51, so that the wall thickness of the outer side plate 531 of the support column 53 can be effectively reduced, and the weight of the lower support beam is reduced.
In this embodiment, one side of the outer side plate 531 is provided with an outwardly protruding cutting 5311, the other side of the outer side plate 531 is provided with an inwardly recessed groove 5312, the structures of the cutting 5311 and the groove 5312 are mutually matched, when the adjacent outer side plates 531 are installed, the cutting 5311 of one outer side plate 531 is inserted or clamped into the groove 5312 of the other outer side plate 531 along the groove 5312 of the other outer side plate 531 to form a hollow polygonal column structure, and the outer side corners are fixedly locked by using the corner clamping sleeve 532, so that the installation is convenient and the disassembly and the recycling can be realized.
In this embodiment, a pair of end guide shoes 8 are arranged at the top and the bottom of the car frame, an inward concave channel is arranged on the outer side wall of the upright post 2, the channel can be used for a guide rail to enter, a side guide shoe 9 is arranged in the channel, the end guide shoes 8 and the side guide shoes 9 on the same side of the car frame are matched with the same guide rail, the car frame realizes the running balance of the car frame by arranging three guide shoes on the side to be matched with the guide rail, shoe liners 10 for being in contact with the guide rail are arranged in the end guide shoes 8 and the side guide shoes 9, the performance of the shoe liners 10 directly determines the running reliability of the elevator, and the quality of the shoe liners 10 is generally evaluated from two dimensions of wear resistance and surface roughness of the shoe liners 10; when the wear resistance of the boot liner 10 is high, the service life of the boot liner is longer, and maintenance replacement is not required frequently; when the surface roughness of the shoe insert 10 is small, the elevator runs more smoothly, the noise is small, and the energy consumption is lower; for a high-load elevator such as a cargo elevator, the requirements of the shoe liner 10 are particularly remarkable in the two aspects, and like when people go to some factories to take the cargo elevator, the people tend to hear larger noise and feel unstable operation of the elevator, and small-amplitude setbacks are generated frequently, and the problems are generally caused by that the shoe liner 10 is worn to a certain extent and has larger surface roughness. Therefore, the present embodiment has also made a series of developments with respect to the manufacturing process of the shoe insert 10, so that the wear resistance of the shoe insert 10 is improved and the surface roughness is reduced. The specific manufacturing process is as follows:
firstly, manufacturing a base 101, processing a pouring cavity 102 which is concave inwards on the base 101, wherein the opening of the pouring cavity 102 is in a flaring structure from inside to outside, so that the castable at the opening is maximized;
step two, embedding a plurality of pressure sensors 103 in the base 101 in a dot matrix manner;
step three, casting the wear-resistant layer 104 into the casting cavity 102, wherein the casting cavity 102 is filled with the wear-resistant layer 104;
and fourthly, machining to ensure that the surface roughness Ra of the wear-resistant layer 104 is less than 0.4.
The base 101 is manufactured by adopting the graphene heat conducting material, so that the base 101 has better heat conductivity, heat generated when the wear-resistant layer 104 is in contact with the guide rail can be quickly conducted to the base 101, the heat is emitted outwards through the base 101, the high-temperature carbonization of the wear-resistant layer 104 is avoided, and the characteristics of the wear-resistant layer 104 can be better protected. And the casting cavity 102 has larger wrapping area on the wear-resistant layer 104, so that the heat dissipation of the wear-resistant layer 104 is further ensured.
In the second step, the pressure sensor 103 is embedded in the shoe insert 10, and the contact condition between the shoe insert 10 and the guide rail can be known by the pressure signal acquired by the pressure sensor 103. When the pressure signals acquired by the pressure sensors 103 corresponding to the two shoe liners 10 in the same guide shoe have a larger difference, the elevator is inclined to a certain side, and the elevator is required to be balanced and adjusted due to unbalanced load in the elevator; when the pressure signals collected by the pressure sensors 103 corresponding to the two shoe liners 10 in the same guide shoe are basically consistent, and the pressure value exceeds the preset pressure value range, the distance between the shoe liners 10 is too large or too small, and a maintenance person needs to be reminded of adjusting the distance between the shoe liners 10. Leads of the pressure sensor 103 lead out from the back of the shoe through the base 101.
In this embodiment, the manufacturing process of the wear-resistant layer 104 is as follows: the weight ratio of the components is as follows: 25-30 parts of graphite powder and Mn 18 Cr 2 20 to 30 portions of powder, al 2 SiO 5 10 to 15 parts of powder, 10 to 15 parts of SiC powder and Si 3 N 4 10-15 parts of powder, KBF 4 1 to 3 parts of powder, 10 to 15 parts of silicon boron rubber, 10 to 12 parts of polyether-ether-ketone, 1 to 3 parts of rare earth, 20 to 25 parts of fusion agent and 35 to 50 parts of binder. The preparation method comprises the following specific steps:
step one, graphite powder 25-30 parts and Mn 18 Cr 2 20 to 30 portions of powder, al 2 SiO 5 10 to 15 parts of powder, 10 to 15 parts of SiC powder and Si 3 N 4 10-15 parts of powder, KBF 4 Performing edge sealing ball milling on 1-3 parts of powder, 10-15 parts of silicon boron rubber, 10-12 parts of polyether-ether-ketone and 1-3 parts of rare earth, and crushing each component into powder with the particle diameter of 100-200 mu m;
step two, placing all powder particles obtained after ball milling into a reaction container, adding a proper amount of ethanol solution into the reaction container, and stirring at a high speed of 400-500 r/min to disperse the powder particles in the ethanol solution to obtain a mixed solution A;
adding ammonia water into the mixed solution A to adjust the pH value to 10.5-11, and stirring at a high speed of 600-700 r/min to obtain mixed solution B;
step four, filtering the mixed solution B to obtain a solid;
putting the solid into a casting container, adding 20-25 parts of fusion agent and 35-50 parts of binder, fully and uniformly stirring, applying ultrasonic vibration with the vibration frequency of 15KHz in the stirring process, and heating to 400-500 ℃ to obtain a casting melt;
step six, placing the base 101 into a casting mold, injecting casting melt, pressurizing at 35-40 Mpa, drying at 100 ℃ for 10 hours, and sintering at 1000 ℃ for 2 hours to obtain a boot liner 10 blank.
In this embodiment, in order to solve the problem that when the elevator carries uneven distribution of goods, the car is inclined to a certain side, the abrasion of the guide shoes is accelerated. The bottom of the car bottom 1 is provided with two weight boxes 14, the two weight boxes 14 are distributed at the front end and the rear end of the car bottom 1, and the front-back balance of the car is adjusted by injecting weight liquid into the weight boxes 14. When the goods are mainly placed at the front end of the car, and the front end of the car is inclined downwards, the weight liquid is injected into the weight box 14 positioned at the rear end of the car bottom 1, so that the car is restored to a balanced state, and the abrasion of guide shoes is reduced. The two weight boxes 14 are respectively connected with the liquid supply box 15 through two liquid supply pipes, weight liquid is stored in the liquid supply box 15, the liquid supply box 15 can be installed at the top of a shaft, the two weight boxes can also be installed at the top of a lift car, and the installation position of the liquid supply box 15 can be selected according to the specific installation condition of the lift. When the liquid supply tank 15 is installed at the top of the hoistway, the elevator is operated without driving the liquid supply tank 15 to move together, without adding additional energy consumption, but with the height of the hoistway, a longer liquid supply pipe is required. When the liquid supply tank 15 is installed at the top of the car, on the contrary, the elevator needs to drive the liquid supply tank 15 to move together, and extra energy consumption is required to be added, but the distance from the liquid supply tank 15 to the weight box 14 is shorter, and the distance between the liquid supply tank 15 and the weight box 14 is relatively fixed, so that the installation is simpler. In addition, a connecting pipe is further arranged between the two weight boxes 14 for connection, a three-position four-way reversing valve 16 and a water pump 17 are arranged on the connecting pipe, the three-position four-way reversing valve 16 is provided with an end A, an end B, an end P and an end T, the end A and the end B are respectively connected with the two weight boxes 14 through the connecting pipe, and the end P and the end T are respectively connected with a water inlet and a water outlet of the water pump 17.
In different scenarios, there are different control schemes for the flow of the counterweight, as exemplified below.
Scenario 1, when cargoes are just sent into a car, the front end of the car bottom 1 is stressed greatly, the front end of the car bottom 1 can slightly incline downwards, at the moment, a liquid level sensor is arranged in the weight box 14, and as no weight liquid exists in the weight box 14, no induction signal exists in the liquid level sensor, the three-position four-way reversing valve 16 is not powered, and the closed state is kept; the pressure sensor 103 senses signals to control the liquid supply tank 15 to rapidly convey the counterweight liquid to the counterweight box 14 at the rear end of the car bottom 1, so that the elevator is balanced;
and 4, when the car is kept in a balanced state, namely the pressure sensor 103 has no sensing signal, and when the liquid level sensors in the two weight boxes 14 sense the liquid level signals, the liquid supply box 15 extracts the weight liquid from the two weight boxes 14 at the same speed until the weight liquid in one weight box 14 is completely extracted, and the liquid level sensor cannot sense the liquid level signals.
The control scheme of the counterweight liquid flow is very suitable for the situation that the liquid supply tank 15 is arranged at the top of a hoistway, can greatly control the weight of the elevator, and ensures the energy consumption of the elevator as much as possible.
In addition, the problem that the operation speed is low is generally existed in the conventional freight elevator, in order to ensure that the freight elevator has a large load capacity, when the rated power of the elevator is determined, according to the rated power formula p=fv, when the rated power of the elevator needs a large load force F, the rated operation speed of the freight elevator is inevitably smaller, when the rated power of the traction machine is positively related to the maximum load capacity of the freight elevator before delivery of the freight elevator, namely, when the freight elevator needs to have a high operation speed, the traction machine with a large load capacity is needed, the maximum operation speed of the freight elevator is calculated according to p=fv, P is the rated power of the traction machine, F is the traction force needed when the freight elevator loads the load of the maximum load capacity, V is the maximum operation speed of the freight elevator, when the maximum operation speed of the freight elevator is determined, the maximum operation speed of the freight elevator is input into a control system of the elevator, the maximum operation speed of the elevator is controlled by a speed limiter, when the loaded load of the freight often does not reach the maximum load capacity during operation of the elevator, the limit of the speed limiter is limited, and the maximum operation speed of the elevator still maintains the set maximum operation speed, and the maximum operation speed of the elevator is still kept at the set maximum operation speed, and the surplus operation speed can occur. In order to solve the above problems, the cargo elevator of this embodiment provides a control method of an elevator, in which rated power is set to be unchanged when a traction machine works, and running speed of the elevator is changed along with change of actual load capacity of the elevator, and when the actual load capacity of the elevator is large, the running speed of the elevator is slow; when the actual load capacity of the elevator is small, the running speed of the elevator is high; thereby solving the problem of excessive power of the traction machine in the elevator. The maximum speed of the corresponding speed limiter is also regulated by the traction force of the elevator, the traction machine is in signal connection with the elevator control system, a traction force signal is transmitted to the elevator control system, and the elevator control system calculates and controls the action signal of the speed limiter, so that the maximum speed of the speed limiter also changes in real time. After the control method is used for controlling the running of the elevator, the freight elevator can run at a high speed under the condition of low carrying capacity, and the working efficiency of the freight elevator is improved.
In this embodiment, a lifting mechanism 20 is installed in the lifting beam assembly 4, safety tongs 30 are installed at the bottoms of the two upright posts 2, the lifting mechanism 20 is connected with the safety tongs 30, and the lifting mechanism 20 is used for controlling the safety tongs 30 to act. A pair of car top wheels are installed in the upper beam assembly 3.
The foregoing is only a preferred embodiment of the present invention, and all technical solutions for achieving the object of the present invention by substantially the same means are included in the scope of the present invention.
Claims (10)
1. The freight elevator with the double-guide-rail double-lower-beam structure comprises a car frame and a car arranged in the car frame, wherein the car frame drives the car to move; the car comprises a car bottom (1) positioned at the bottom of the car; the method is characterized in that: the car frame comprises two upright posts (2) which are respectively positioned at two sides of the car, an upper beam assembly (3) which is positioned at the top of the upright posts (2), a lifting beam assembly (4) which is positioned at the bottom of the upright posts (2) and a supporting beam assembly (5), wherein the upper beam assembly (3), the lifting beam assembly (4) and the supporting beam assembly (5) are arranged in parallel from top to bottom, the car is positioned between the upper beam assembly (3) and the lifting beam assembly (4), the top of the lifting beam assembly (4) is supported at the bottom of the car bottom (1), the bottom of the car bottom (1) is connected with the supporting beam assembly (5) through a plurality of groups of diagonal bracing assemblies (6) which are sequentially arranged from left to right, each group of diagonal bracing assemblies (6) comprises a front supporting rod (61) and a rear supporting rod (62), one end of the front supporting rod (61) is fixed at the front side of the supporting beam assembly (5), and the other end of the front supporting rod (61) extends to the front end of the car bottom (1) to be fixed to the bottom of the car bottom (1); one end of the rear supporting rod (62) is fixed on the rear side of the supporting beam assembly (5), and the other end of the rear supporting rod (62) extends towards the rear end of the car bottom (1) and is fixed to the bottom of the car bottom (1); the diagonal bracing assembly (6) is positioned between the two upright posts (2), and the side part of the car bottom (1) is connected with the upright posts (2) through diagonal braces (7).
2. The two-rail double-underbeam structure cargo lift of claim 1, characterized in that: the car bottom (1) comprises a panel (11), a bottom plate (12) and a steel frame layer (13), wherein the steel frame layer (13) is positioned between the panel (11) and the bottom plate (12), the steel frame layer (13) comprises two side channel steels (131) which are horizontally arranged oppositely and two end channel steels (132) which are respectively connected with two ends of the side channel steels (131), an outer frame of the steel frame layer (13) is formed by connecting the two side channel steels (131) and the two end channel steels (132) end to end through a connecting piece (133), a cross type bearing frame (134) used for enhancing the bearing capacity of the car bottom (1) is arranged in the outer frame, and the cross type bearing frame (134) is of an X-shaped structure.
3. The two-rail double-underbeam structure cargo lift of claim 2, characterized in that: the end fixed connection of crossing formula carrier (134) is in connecting piece (133), connecting piece (133) are including being used for the tip of limit channel-section steel (131) to insert the first link of connection, be used for the tip of tip channel-section steel (132) to insert the second link of connection and be used for crossing the time the tip of carrier to insert the third link of connection, first link sets up perpendicularly with the second link, the third link is located the contained angle department between first link and the second link.
4. The two-rail double-underbeam structure cargo lift of claim 1, characterized in that: the support beam assembly (5) comprises two lower support beams (51) which are symmetrically arranged, the end parts of the two lower support beams (51) are fixedly connected with the upright posts (2), a plurality of connecting plates (52) are arranged at the bottoms of the two lower support beams (51), and the tops of the two lower support beams (51) are connected with the lifting beam assembly (4).
5. The two-rail double-underbeam structure cargo lift of claim 4, characterized in that: the front support rods (61) and the rear support rods (62) are respectively connected to the side surfaces of the two lower support beams (51), a plurality of support columns (53) are arranged between the two lower support beams (51), the number of the support columns (53) corresponds to that of diagonal bracing assemblies (6), and two ends of each support column (53) are respectively fixed on the inner sides of corresponding positions where the lower support beams (51) are connected with the front support rods (61) and the rear support rods (62).
6. The two-rail double-underbeam structure cargo lift of claim 5, characterized in that: support column (53) are including the lateral plate (531) of polylith looks joint each other, and polylith lateral plate (531) head and tail joint in proper order forms hollow polygon prism structure, and the corner outside that adjacent lateral plate (531) are connected is equipped with corner cutting ferrule (532), corner cutting ferrule (532) parcel adjacent lateral plate (531) are connected the corner, and corner cutting ferrule (532) and lateral plate (531) fixed connection simultaneously, and glue injection hole (533) that communicates external and polygon prism structure inner chamber have been seted up to one of them lateral plate (531).
7. The two-rail double-underbeam structure cargo lift of claim 6, characterized in that: the support columns (53) are clamped between the two lower support beams (51), gel is injected into the inner cavities of the polygonal column structures through the gel injection holes (533), and in the gel injection process, gas in the inner cavities of the polygonal column structures is discharged through gaps between the support columns (53) and the lower support beams (51).
8. The two-rail double-underbeam structure cargo lift of claim 6, characterized in that: one side of the outer side plate (531) is provided with an inserting strip (5311) protruding outwards, the other side of the outer side plate (531) is provided with a groove (5312) recessed inwards, and the structure of the inserting strip (5311) is mutually matched with the structure of the groove (5312).
9. The two-rail double-underbeam structure cargo lift of claim 1, characterized in that: the top and the bottom of sedan-chair frame all are equipped with a pair of tip and lead boots (8), the lateral wall of stand (2) is equipped with the passageway of inwards sunkening, the passageway can supply the guide rail to get into, be equipped with lateral part in the passageway and lead boots (9), lead boots (8) and lateral part and lead boots (9) and all cooperate with same guide rail at the tip of sedan-chair frame with one side.
10. The two-rail double-underbeam structure cargo lift of claim 9, characterized in that: shoe liners (10) for contact fit with the guide rails are arranged in the end guide shoes (8) and the side guide shoes (9), and the manufacturing process of the shoe liners (10) is as follows:
firstly, manufacturing a base (101), processing a pouring cavity (102) which is concave inwards on the base (101), wherein the opening of the pouring cavity (102) is in a flaring structure from inside to outside, so that the castable at the opening is maximized;
step two, embedding a plurality of pressure sensors (103) in a base (101) in a dot matrix manner;
step three, pouring a wear-resistant layer (104) into the pouring cavity (102), wherein the pouring cavity (102) is filled with the wear-resistant layer (104);
and fourthly, machining is adopted to enable the surface roughness Ra of the wear-resistant layer (104) to be smaller than 0.4.
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| CN202310339013.0A CN116022629B (en) | 2023-04-01 | 2023-04-01 | Freight elevator with two guide rails and double lower beam structures |
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| CN202310339013.0A CN116022629B (en) | 2023-04-01 | 2023-04-01 | Freight elevator with two guide rails and double lower beam structures |
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| CN116022629B CN116022629B (en) | 2023-06-20 |
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| CN116022629B (en) | 2023-06-20 |
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Address after: 528000 block 1, No.2, Zhixin Avenue, Leping Town, Sanshui District, Foshan City, Guangdong Province Applicant after: Singerlin Elevator Co.,Ltd. Address before: 528000 block 1, No.2, Zhixin Avenue, Leping Town, Sanshui District, Foshan City, Guangdong Province Applicant before: SIGLEN ELEVATOR (CHINA) CO.,LTD. |
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