CN216336188U

CN216336188U - Adjustable cage portal frame structure

Info

Publication number: CN216336188U
Application number: CN202122704084.5U
Authority: CN
Inventors: 刘治帮; 侯启峰; 黄瓯涵; 盛黎明; 彭忠良
Original assignee: Zhejiang Banmen Machinery Technology Co ltd
Current assignee: Zhejiang Banmen Machinery Technology Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-04-19
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses an adjustable cage portal frame structure which comprises an upper beam assembly, a lower beam assembly and two straight beams, wherein two ends of the upper beam assembly and the lower beam assembly are respectively connected with the two straight beams, the upper beam assembly and the lower beam assembly respectively comprise a left cross beam, a right cross beam and an adjusting beam assembly, the adjusting beam assembly comprises an adjusting beam and a fixed connecting plate, the adjusting beam, the left cross beam and the right cross beam are all C-shaped members, a plurality of groups of adjusting holes are formed in two ends of the adjusting beam, the left end and the right end of the adjusting beam are respectively connected with the left cross beam and the right cross beam, the length of the upper beam assembly and the length of the lower beam assembly are adjusted by adjusting the relative splicing length between the adjusting beam and the left cross beam and the right cross beam, the adjusting beam assembly is fixed by fasteners after being adjusted to a required length position, and the adjusting beam assembly is provided with the detachable fixed connecting plate for installing a rotary hanging wheel assembly or a rope head assembly. The utility model has the advantages of reducing the shearing force borne by the bolt, being convenient for size adjustment, being capable of selecting and installing a hanging wheel assembly or a rope head assembly according to the dragging requirement and the like.

Description

Adjustable cage portal frame structure

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of cages, and particularly relates to an adjustable cage portal frame structure.

[ background of the utility model ]

When in use, the cage needs to be arranged on the portal frame, and the portal frame is pulled by the lifter to enable the cage to move vertically. Cage gantries typically include an upper beam, a straight beam, and a lower beam. The length of the upper beam and the length of the lower beam of the traditional cage portal frame cannot be adjusted, and the installation and use requirements of different working environments cannot be met. Although the upper beam and the lower beam of some existing cage portal frames adopt telescopic structures, the upper beam, the lower beam and the adjusting beam are single longitudinal contact surfaces and fixed through bolts, large shearing force can be generated on the bolts under the action of heavy objects such as cages in the using process, the bolts can be deformed and damaged after long-time use, and the using safety of the cage portal frames is affected.

[ Utility model ] content

The utility model aims to solve the problems in the background art, and provides an adjustable cage portal frame structure, which is convenient to adjust the size and can be used for selectively installing a rotary hoisting wheel assembly or a rope head assembly according to the dragging requirement by arranging a right-angle bent section on an adjusting beam to increase the contact stress area of the adjusting beam so as to reduce the shearing force borne by a bolt.

In order to achieve the purpose, the utility model provides an adjustable cage portal frame structure, which comprises an upper beam assembly, a lower beam assembly and a straight beam, wherein two ends of the upper beam assembly and the lower beam assembly are respectively connected with the straight beam, the upper beam assembly and the lower beam assembly respectively comprise a left cross beam, a right cross beam and an adjusting beam assembly, the adjusting beam assembly comprises an adjusting beam and a fixed connecting plate, the adjusting beam, the left cross beam and the right cross beam are all C-shaped members, a plurality of groups of adjusting holes are arranged at two ends of the adjusting beam, the left end and the right end of the adjusting beam are respectively connected with the left cross beam and the right cross beam, the length of the upper beam assembly and the lower beam assembly is adjusted by adjusting the relative overlapping length between the adjusting beam and the left cross beam and the right cross beam, and the adjusting beam is fixed by a fastener after being adjusted to the required length position, and the adjusting beam assembly is provided with a detachable fixed connecting plate for installing a rotary hanging wheel assembly or a rope head assembly.

As preferred, left crossbeam, right crossbeam middle part all are equipped with the pivot mounting hole, and demountable installation has the fixed wheel that suspends in midair on left crossbeam, the right crossbeam, and the fixed wheel shaft cooperation that suspends in midair on the wheel is installed in the pivot mounting hole, conveniently suspends the dismouting of wheel in midair in left crossbeam, right crossbeam middle part and carries on fixedly, better satisfies the demand of towing.

Preferably, the fixed connection plate is provided with a rotary hanging wheel assembly through a fastening bolt, the rotary hanging wheel assembly comprises a mounting seat and a hanging wheel, and the hanging wheel is mounted on the mounting seat in a matching manner, so that the rotary hanging wheel assembly can be conveniently dismounted and mounted on the fixed connection plate, and the traction requirement can be better met.

Preferably, the lower end of the adjusting beam assembly positioned on the upper beam assembly is provided with a fixed connecting plate or a rope hitch plate, the fixed connecting plate is provided with a rotary hoisting wheel assembly, the rope hitch plate can be provided with a plurality of elevator rope head combinations, and the rope hitch plate and the elevator rope head combinations or the rotary hoisting wheel assembly can be selectively installed according to the traction requirements.

Preferably, the limit impact device further comprises a limit impact bow assembly, the two straight beams are slidably mounted on the guide rail, the limit impact bow assembly comprises an impact bow support, an impact bow, a switch support and a limit switch, the limit switch is mounted on one of the straight beams through the switch support, the impact bow is mounted on the guide rail on the same side of the straight beam with the limit switch through the impact bow support, the limit switch comprises a rubber roller, the rubber roller is matched with the impact bow to enable the rubber roller to be in a compression state during operation, electric potential signals are generated after electric contacts of the limit switch are lapped and conducted and transmitted to a control system of the elevator through a cable, the limit impact bow assembly is mounted on the guide rail through a sectional mounting structure, namely, part of the limit impact bow assembly is mounted on the straight beam, the rest of the limit impact bow assembly is mounted on the straight beam, the working stability is guaranteed, and the operation safety of the cage portal frame is improved.

Preferably, the guide rail is provided with an induction plate, the straight beam is provided with an inductor support, the inductor support is provided with a plurality of U-shaped inductors which are vertically distributed, the induction plate can be inserted into or separated from the open end of the U-shaped inductor when moving up and down along with the straight beam, the open end of the U-shaped inductor realizes on-off control of a potential signal of the U-shaped inductor through a light path or a magnetic path signal which is used for shielding the U-shaped inductor, the potential signal of the U-shaped inductor is transmitted to a control system of the lifter through a cable, the guide rail is a T-shaped component, one surface of the straight beam, which is close to the guide rail, is provided with an opening, and one end surface of the guide rail is installed in the open end of the straight beam in a matching manner, so that the running position of the cage portal frame can be accurately controlled.

Preferably, the number of the straight beams is 4, the straight beams are symmetrically distributed at two ends of the upper beam assembly and the lower beam assembly in pairs, the two straight beams positioned at the same side are arranged in parallel, and the guide rail is arranged between the two straight beams positioned at the same side.

Preferably, the guide rail is provided with a magnet support, the magnet support is provided with at least one group of magnets, bistable magnetic switches with the same number as the magnets are arranged on the straight beam provided with the limit switch, the bistable magnetic switches can be adsorbed or separated from the magnets to realize on-off control of potential signals of the bistable magnetic switches when moving up and down along with the straight beam, the potential signals of the bistable magnetic switches are transmitted to a control system of the elevator through cables, the bistable magnetic switches are triggered through the magnetic action between the bistable magnetic switches and the magnets, and therefore the potential signals are transmitted to the elevator to control the elevator to decelerate.

Preferably, the lower beam assembly is provided with a safety gear lifting mechanism, the safety gear lifting mechanism comprises a connecting shaft, a safety gear, swing arms and a sleeve shaft, the swing arms and the sleeve shaft are arranged on the connecting shaft, two parallel pull arms are arranged on the sleeve shaft, lifting heads of the two pull arms are positioned at two sides of a guide rail and are connected with the safety gear through lifting plates, the safety gear is fixed on the lower surfaces of two ends of the lower beam assembly, the swing arms on the two safety gear lifting mechanisms are connected through a pull rod assembly, one end of the connecting shaft on one safety gear lifting mechanism is provided with a lifting arm, the lifting arm is provided with an upper pull ring and a lower pull ring for connecting a rope head of a speed-limiting steel wire rope, the pull rod assembly comprises a spring, a pull rod and an adjusting connecting rod, the spring is sleeved outside the pull rod, one end of the spring is arranged on the lower beam assembly through an angle bracket, and the adjusting connecting rod is connected through a threaded sleeve, the other end of the spring is withstood by the threaded sleeve, the rotation angles of the swing arm and the lifting arm, the compression amount of the spring, the length of the pull rod assembly and the size of the lifting force are adjusted by screwing the threaded sleeve, the double-safety-pliers lifting mechanism is arranged and connected through the pull rod assembly, so that the lower beam assembly is stressed more evenly when in use, the running stability of the lower beam assembly is ensured, and the lifting arm is connected with a speed-limiting steel wire rope to control the cage portal frame to stop on the guide rail.

As preferred, the structure of upper beam subassembly, underbeam subassembly is the same, and all includes two parallels and back to left crossbeam, two parallels and back to right crossbeam, the regulating beam subassembly that sets up that set up, regulating beam subassembly includes two parallels and back to the regulating beam that sets up, two be equipped with demountable installation's reinforcing plate between the regulating beam, and is whole comparatively firm, and the atress homogeneity is good.

The utility model has the beneficial effects that: the upper end and the lower end of the adjusting beam are provided with the bending sections, the left end and the right end of the adjusting beam are respectively buckled with the left cross beam and the right cross beam, the bending sections are attached to the upper ends and the lower ends of the corresponding left cross beam and the right cross beam, the length of the upper beam assembly and the lower beam assembly is adjusted by adjusting the relative overlapping length between the adjusting beam and the left cross beam and the right cross beam, the upper beam assembly and the lower beam assembly are fixed by fasteners after being adjusted to the required length position, and the shearing stress of the fastening bolts on the left cross beam and the right cross beam on which the adjusting beam is arranged can be effectively reduced by designing the bending sections; through demountable installation have be used for installing the fixed connection board of rotatory hanging wheel subassembly or fag end subassembly on adjusting the roof beam, satisfy the demand of towing better.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of an embodiment;

FIG. 3 is a schematic structural diagram of an embodiment;

FIG. 4 is a schematic structural diagram of an embodiment;

FIG. 5 is a schematic view of an embodiment of an adjustment beam assembly;

FIG. 6 is a schematic view of an embodiment of a rotating hanging wheel assembly;

FIG. 7 is a partial structural schematic of an embodiment;

FIG. 8 is a partial schematic view of a lower beam assembly of an embodiment;

FIG. 9 is a schematic view of a straight beam and rail mounting arrangement of an embodiment;

FIG. 10 is a schematic view of a straight beam of an embodiment;

FIG. 11 is a schematic view of an embodiment of a straight beam and rail arrangement.

In the figure: 1-left beam, 2-right beam, 3-adjusting beam, 4-straight beam, 5-guide rail, 6-limit bow-hitting component, 7-safety gear lifting mechanism, 8-pull rod component, 10-fixed suspension wheel, 30-reinforcing plate, 31-fixed connecting plate, 32-adjusting hole, 33-rotary hanging wheel component, 34-rope head component and 41-bistable magnetic switch, 42-sensor support, 43-U-shaped sensor, 51-magnet support, 52-magnet, 53-sensing plate, 61-pantograph support, 62-pantograph, 63-limit switch, 64-rubber roller, 70-swing arm, 71-connecting shaft, 72-safety gear, 73-pull arm, 74-check ring assembly and 75-lifting arm.

[ detailed description ] embodiments

Embodiment 1 referring to fig. 1 and 5 to 10, the present application provides an adjustable cage portal frame structure, which includes an upper beam assembly, a lower beam assembly and two straight beams 4, wherein two ends of the upper beam assembly and the lower beam assembly are respectively connected to the two straight beams 4, the upper beam assembly and the lower beam assembly each include a left beam 1, a right beam 2 and an adjusting beam assembly, the adjusting beam assembly includes an adjusting beam 3 and a fixing connecting plate 31 installed on the adjusting beam 3, the left beam 1 and the right beam 2 are C-shaped members, left and right ends of the adjusting beam 3 are respectively fastened to one ends of the left beam 1 and the right beam 2, and a bent section on the adjusting beam 3 is closely attached to upper and lower ends of the corresponding left beam 1 and right beam 2, the length of the upper beam assembly and the lower beam assembly is adjusted by adjusting the relative overlapping length between the adjusting beam 3 and the left beam 1 and the right beam 2, and is fixed by a fastener after being adjusted to a desired length position, the fixed connection plate 31 used for installing the rotary hanging wheel assembly 33 or the rope end assembly 34 is detachably installed on the adjusting beam 3, wherein the fasteners are fastening bolts and nuts, the longitudinal sections of the adjusting beam 3, the left cross beam 1 and the right cross beam 2 are all in a C-shaped shape, and the inclined pull rod assembly with a certain included angle is installed on the straight beam 4.

The tip of left side crossbeam 1 and right crossbeam 2 all is equipped with the connecting hole, and a plurality of regulation holes 32 have been seted up to the end about adjusting beam 3, and the fastener is installed on relative connecting hole and regulation hole 32, realizes adjusting the relative splice length adjustment between roof beam 3 and left crossbeam 1, the right crossbeam 2 and uses the fastener spacing to fix through the regulation of connecting hole and regulation hole 32 relative position.

The middle parts of the left cross beam 1 and the right cross beam 2 are respectively provided with a rotating shaft mounting hole, the left cross beam 1 and the right cross beam 2 are detachably provided with a fixed suspension wheel 10, and a wheel shaft on the fixed suspension wheel 10 is matched and mounted in the rotating shaft mounting hole.

The adjustable cage portal frame structure also comprises a limit pantograph component 6 and two guide rails 5, the two straight beams 4 are slidably arranged on the guide rails 5, the limit pantograph component 6 comprises a pantograph bracket 61 and a pantograph 62, switch support and limit switch 63, limit switch 63 passes through the switch support mounting on one of them straight beam 4, hit bow 62 and install on being located the guide rail 5 of the straight beam 4 homonymy that installs limit switch 63 through hitting bow support 61, limit switch 63 includes rubber roller 64, during operation rubber roller 64 makes rubber roller 64 be in compression state with hitting the cooperation of bow 62, limit switch 63's electrical contact overlap joint produces the potential signal after switching on and transmits the control system for the lift through the cable transmission, the left and right ends top of putting the beams in place the subassembly is installed on two guide rails 5 through leading the boots on, the model that limit switch 63 adopted includes but not limited to 1370 limit switch.

The guide rail 5 which is positioned on the same side of the straight beam 4 provided with the limit switch 63 is provided with an induction plate 53 through a mounting bracket, the straight beam 4 is provided with an inductor bracket 42, the inductor bracket 42 is provided with a plurality of vertically distributed U-shaped inductors 43, the induction plate 53 can be inserted into or separated from the open end of the U-shaped inductor 43 when moving up and down along with the straight beam so as to realize the on-off control of the potential signal of the U-shaped inductor 43 through whether the light path or the magnetic path signal of the U-shaped inductor 43 is shielded, the potential signal of the U-shaped inductor 43 is transmitted to the control system of the lifter through a cable, the control system of the lifter judges whether the suspension cage reaches the flat position according to the feedback switch potential signal, the guide rail 5 is a T-shaped component, one surface of the straight beam 4 close to the guide rail 5 is provided with an opening, the cross section of the straight beam 4 is in a C shape, one end surface of the guide rail 5 is arranged in the open end of the straight beam 4 in a matching way, the induction plate 53 and the U-shaped inductor 43 can be replaced by a monostable switch and a magnetic strip, the magnetic strip is attached to the guide rail 5, and the monostable switch is fixed to the straight beam 4.

The magnet support 51 is installed on the guide rail 5 located on the same side of the straight beam 4 provided with the limit switch 63, at least one group of magnets 52 is installed on the magnet support 51, bistable magnetic switches 41 with the same number as the magnets 52 are installed on the straight beam 4 provided with the limit switch 62, the bistable magnetic switches 41 are connected with the elevator, cables of all switches are gathered into the traveling cables, the number of the cables fixed on the wall of the hoistway is reduced, installation workload during jacking of the elevator is reduced, when the bistable magnetic switches 41 move to the corresponding magnets 52, the bistable magnetic switches 41 are attracted and triggered, potential signals are transmitted to the elevator, and the elevator is controlled to decelerate.

The U-shaped inductor 43, the bistable magnetic switch 41 and the limit switch 63 are connected with cables which are collected into a flat cable, the surface of the flat cable is covered with an insulating protective layer, one end of the flat cable is fixed on the suspension cage, the other end of the flat cable is connected to a control system of the elevator, the work load of jacking and installing the elevator each time is reduced through cable collection, the reliability of products is improved, and the number of the bistable magnetic switches 41 can be determined according to the running speed of the elevator.

Two safety gear lifting mechanisms 7 are arranged at two ends of the lower beam assembly, each safety gear lifting mechanism 7 comprises a connecting shaft 71, a safety gear 72, a swing arm 70 arranged on the connecting shaft 71, a sleeve shaft and two retainer ring assemblies 74, two parallel pull arms 73 are arranged on the sleeve shaft, the two pull arms 73 are positioned at two sides of the guide rail 5 and are connected with the safety gear 72 through lifting plates, the swing arms 70 on the first ends of the connecting shafts 71 on the two safety gear lifting mechanisms 7 are connected through pull rod assemblies 8, the first ends of the connecting shafts 71 and the swing arms 70 are connected through rotating sleeve shafts, the second end of the connecting shaft 71 on one safety gear lifting mechanism 7 is provided with a lifting arm 75 used for being connected with a speed-limiting tensioning device, each pull rod assembly 8 comprises two pull rods which are connected through a connecting sleeve, a pressure spring, an angle bracket and two pressure spring retainers are arranged between the two pull rods, and the angle bracket can be arranged on the lower beam assembly, the end part of the pull rod and one end of the swing arm are fixed by bolts and nuts, two retainer ring assemblies are respectively arranged at the left side and the right side of the lower beam assembly, the main body of a safety gear 72 is arranged at the bottoms of the two ends of the lower beam assembly, the lower end of the safety gear is connected with a lower guide shoe through a connecting seat, the lower guide shoe is arranged on a guide rail 5, a four-bar mechanism is formed among the pull rod assembly 8, the two swing arms 70 and the lower beam assembly, an upper lifting ring and a lower lifting ring are arranged on a lifting arm 75, a speed limiting tensioning device comprises a speed limiting device and a tensioning device which are connected through a speed limiting steel wire rope, the rope heads at the two ends of the speed limiting steel wire rope are respectively connected with the upper lifting ring and the lower lifting ring, the steel wire rope forms a closed loop after connection, the speed limiting tensioning device drives the lifting arm to rotate through controlling the rotation of the steel wire rope, the speed limiting device can be arranged on the guide rail or the upper beam of the tensioning device or on the ground of a pit, when the cage portal frame needs to be stopped, the steel wire rope clamps and drives the lifting arm 75 to rotate, so that the connecting shaft 7, the swinging arm 70 and the sleeve shaft of one safety gear lifting mechanism 7 rotate, then the swinging arm 70 and the connecting shaft 71 of the other safety gear lifting mechanism 7 also rotate under the action of the pull rod assembly 8, the connecting shaft 71 rotates and drives the sleeve shaft to rotate, the sleeve shaft rotates and drives the pull arm 73 to rotate, the pull arm 73 rotates and can pull the safety gear 72 and move the wedge block on the safety gear 72, the gap between the wedge block and the guide surface of the guide rail 5 can be eliminated after the wedge block moves, so that the suspension cage is stopped on the guide rail 5, the pull rod assembly 8 comprises a spring, a pull rod and an adjusting connecting rod, the spring is sleeved outside the pull rod, one end of the spring is installed on the lower beam assembly through an angle bracket, the adjusting connecting rod and the pull rod are connected through a threaded sleeve, the adjusting connecting rod is externally provided with a thread, one end of the spring sleeve is fixed with the pull rod, and the other end of the spring sleeve is in threaded connection with the adjusting connecting rod, the threaded sleeve is propped against the other end of the spring, and the rotating angles of the swing arm and the lifting arm, the compression amount of the spring, the length of the pull rod assembly and the size of the lifting force are adjusted by screwing the threaded sleeve.

The structure of upper beam assembly, underbeam subassembly is the same, and all includes two parallel relative left crossbeam 1 that set up, two parallel relative right crossbeam 2 that set up, adjusts the roof beam subassembly and includes two parallel relative regulation roof beams 3 that set up, installs reinforcing plate 30 with bolt and nut between two regulation roof beams 3.

Example 2 referring to fig. 2, 5 to 10, the structure is the same as that of example 1 except that a rope hitch plate is installed at the lower end of an adjusting beam 3 on an upper beam assembly, and an elevator rope hitch is installed on the rope hitch plate.

Embodiment 3 referring to fig. 3 and 5 to 10, the structure is the same as that of embodiment 1 except that a fixed connection plate 31 is installed at the upper end of an adjusting beam 3 on a lower beam assembly, a rotary hanging wheel assembly 33 is installed on the fixed connection plate 31 by fastening bolts, the rotary hanging wheel assembly 33 comprises an installation seat and a hanging wheel, and the hanging wheel is installed on the installation seat in a matching manner.

Embodiment 4 referring to fig. 4 to 10, the structure is the same as that of embodiment 1 except that a fixed connection plate 31 is installed at the upper end of the adjusting beam 3 on the upper beam assembly, a rotary hanging wheel assembly 33 is installed on the fixed connection plate 31 by fastening bolts, the rotary hanging wheel assembly 33 includes a mounting seat and a hanging wheel, and the hanging wheel is installed on the mounting seat in a matching manner.

Embodiment 5 referring to fig. 11, the structure is the same as embodiment 1 except that the number of the straight beams 4 is 4 and the straight beams are distributed at both ends of the upper beam assembly and the lower beam assembly in pairwise symmetry, two straight beams 4 located at the same side are arranged in parallel, and the guide rail 5 is installed between two straight beams 4 located at the same side.

Example 6 the structure was the same as example 1 except that the cross section of the straight beam was in the shape of an omega.

The working process of the utility model is as follows:

in the working process, when the adjustable cage portal frame structure is used, a user can select to install a fixed suspension wheel 10 in the middle of a left cross beam 1 and a right cross beam 2 or install a rotary suspension wheel assembly 33 on a fixed connecting plate 31 or install a rope hitch plate and an elevator rope hitch combination on an adjusting beam 3 according to traction requirements, the cage portal frame can move up and down along a guide rail 5 under the traction action of a lifter, when the length of an upper beam assembly and a lower beam assembly is required to be adjusted, the buckling length of the left end and the right end of the adjusting beam 3 and the left cross beam 1 and the right cross beam 2 is required to be adjusted, the longer the buckling length of the left end and the right end of the adjusting beam 3 and the left cross beam 1 and the right cross beam 2 is required to be adjusted, the longer the upper beam assembly and the lower beam assembly are adjusted to the required length, and then the adjusting beam 3 and the left cross beam 1 and the lower beam assembly are adjusted to be adjusted to the required length through fastening bolts, The right beam 2 is fixed, and the bending section on the adjusting beam 3 is buckled and pressed on the left beam 1 and the right beam 2, so that the left beam 1 and the right beam 2 have a certain supporting effect on the adjusting beam 3, and the shearing stress borne by the fastening bolt is effectively reduced.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a cage portal frame structure with adjustable, includes upper beam subassembly, underbeam subassembly and straight roof beam, and the both ends of upper beam subassembly, underbeam subassembly link to each other with straight roof beam respectively, and upper beam subassembly, underbeam subassembly all include left crossbeam, right crossbeam and regulating beam subassembly, the regulating beam subassembly is including regulating beam and fixed connection board, its characterized in that: adjust roof beam, left crossbeam and right crossbeam and be C type component, the both ends of adjusting the roof beam are equipped with a plurality of groups regulation hole, and the end links to each other with left crossbeam and right crossbeam respectively about adjusting the roof beam, adjusts the length adjustment of adjusting the relative overlap joint length between roof beam and left crossbeam, the right crossbeam in order to realize upper beam subassembly, underbeam subassembly and fixed with the fastener after adjusting to required length position, be equipped with the detachable fixed connection board that is used for installing rotatory hanging wheel subassembly or fag end subassembly on the regulating beam subassembly.

2. An adjustable cage gantry structure as defined in claim 1, wherein: the bottom plate middle part of left side crossbeam, right crossbeam all is equipped with the pivot mounting hole, and demountable installation has the fixed wheel that suspends in midair on left side crossbeam, the right crossbeam, and the fixed shaft cooperation that suspends in midair of wheel is installed in the pivot mounting hole.

3. An adjustable cage gantry structure as defined in claim 1, wherein: the fixed connection plate is provided with a rotary hanging wheel assembly through fastening bolts, the rotary hanging wheel assembly comprises a mounting seat and a suspension wheel, and the suspension wheel is mounted on the mounting seat in a matched mode and rotates at an angle through screwing the fastening bolts.

4. An adjustable cage gantry structure as defined in claim 1, wherein: the lower end of the adjusting beam assembly on the upper beam assembly is detachably provided with a fixed connecting plate or a rope hitch plate, and the fixed connecting plate is provided with a rotary hanging wheel assembly.

5. An adjustable cage gantry structure as defined in claim 1, wherein: the limit switch comprises rubber rollers, the rubber rollers are matched with the limit switches in the working process so that the rubber rollers are in a compression state, and electric contacts of the limit switches are lapped and conducted to generate potential signals and transmit the potential signals to a control system of the elevator through cables.

6. An adjustable cage gantry structure as defined in claim 5, wherein: the elevator is characterized in that an induction plate is installed on the guide rail, an inductor support is installed on the straight beam, a plurality of U-shaped inductors which are vertically distributed are installed on the inductor support, the induction plate can be inserted into or separated from the open end of each U-shaped inductor when moving up and down along with the straight beam, on-off control of a potential signal of each U-shaped inductor is realized by whether the open end of each U-shaped inductor shields the light path or the magnetic path signal of each U-shaped inductor, the potential signal of each U-shaped inductor is transmitted to a control system of the elevator through a cable, and the straight beam moves up and down along the length direction of the guide rail.

7. An adjustable cage gantry structure as defined in claim 6, wherein: the number of the straight beams is 4, the straight beams are symmetrically distributed at two ends of the upper beam assembly and the lower beam assembly in pairs, the two straight beams positioned at the same side are arranged in parallel, and the guide rail is arranged between the two straight beams positioned at the same side.

8. An adjustable cage gantry structure as defined in claim 6, wherein: the elevator is characterized in that a magnet support is mounted on the guide rail, at least one group of magnets are mounted on the magnet support, bistable magnetic switches with the same number as the magnets are mounted on the straight beam on which the limit switches are mounted, the bistable magnetic switches can be adsorbed or separated from the magnets to achieve on-off control of potential signals of the bistable magnetic switches when moving up and down along with the straight beam, and the potential signals of the bistable magnetic switches are transmitted to a control system of the elevator through cables.

9. An adjustable cage gantry structure as defined in claim 6, wherein: the safety gear lifting mechanism comprises a connecting shaft, a safety gear, swing arms and a sleeve shaft, wherein the swing arms and the sleeve shaft are arranged on the connecting shaft, the two parallel pull arms are arranged on the sleeve shaft, the lifting heads of the two pull arms are positioned on two sides of a guide rail and are connected with the safety gear through lifting plates, the safety gear is fixed on the lower surfaces of two ends of the lower beam assembly, the swing arms on the two safety gear lifting mechanisms are connected through a pull rod assembly, one end of the connecting shaft on one safety gear lifting mechanism is provided with the lifting arm, the lifting arm is provided with an upper pull ring and a lower pull ring which are used for connecting a rope head of a speed-limiting steel wire rope, the pull rod assembly comprises a spring, a pull rod and an adjusting connecting rod, the spring is sleeved outside the pull rod, one end of the spring is arranged on the lower beam assembly through an angle bracket, the adjusting connecting rod is connected with the pull rod through a thread sleeve, and the thread sleeve props against the other end of the spring, the rotation angles of the swing arm and the lifting arm, the compression amount of the spring, the length of the pull rod assembly and the size of the lifting force are adjusted by screwing the threaded sleeves.

10. An adjustable cage gantry structure as defined in any one of claims 1 to 9, wherein: the structure of upper beam assembly, underbeam subassembly is the same, and all includes two parallels and back to left crossbeam, two parallels and back to right crossbeam, the regulating beam subassembly that sets up, and the regulating beam subassembly includes two parallels and back to the regulating beam that sets up, two be equipped with demountable installation's reinforcing plate between the regulating beam.