CN207294086U - A kind of central air-conditioning filter element replacing instrument - Google Patents

Abstract

A kind of central air-conditioning filter element replacing instrument, belongs to central air-conditioning installation maintaining field, including stent, lifting seat, handle, elevating mechanism, pulley assembly, rope；The stent is placed on below the filter core of central air-conditioning filter element replacing scene；The lifting seat is installed in stent；The handle is installed on one end of elevating mechanism；The elevating mechanism is rack-mount；The elevating mechanism is connected with rope；The pulley assembly is rack-mount；The characteristics of described rope one end is connected with elevating mechanism, and labour can be saved by having, and safety and environmental protection is easy to carry, and work efficiency is high.

Description

A kind of central air-conditioning filter element replacing instrument

Technical field

The invention belongs to central air-conditioning installation and maintenance service field, more particularly to a kind of central air-conditioning filter element replacing instrument.

Background technology

With social progress, the application of central air-conditioning is more and more extensive, in particular with the exacerbation of environmental pollution, in center The frequency for installing filtration apparatus additional in the ventilating system of air-conditioning and replacing the filter core of filtration apparatus is higher and higher；The filtering of central air-conditioning Device is typically mounted at ventilating system, and the ventilating system of central air-conditioning is often provided on the roof of building, therefore, central hollow Adjusting the replacement of filter core has certain difficulty, and particularly relatively large central air-conditioning, its filter core volume is big, weight weight, replaces more Add difficulty；The existing method for replacing central air-conditioning filter core is more than two operating personnel, upper to peace using ascending tool The height of the ventilation shaft of filter core is filled, old filter core is pulled down, is put into ground, then pick up new filter core, puts into installation filter core Position, a people holds in the palm, and another person carries out fastening installation；Have a disadvantage in that, need a people to hold up during cartridge removal, It is relatively elaborate, it can many times cause filter core to come off, smash ground and pollute ground, a people can not complete；Furthermore install During new filter core, employment holds up, it is relatively difficult to be aligned, and needs multiple person cooperational in the case where filter core is heavier, and general work of ascending a height Tool can not accommodate more people at the same time and work at the same time, and after filter core installation is entered, when fastening still needs to very important person's picking-up, and filter core often occurs and comes off The phenomenon broken.

The content of the invention

For existing central air-conditioning filter element replacing there are the problem of, the present invention proposes a kind of central air-conditioning filter element replacing work Tool, it is characterised in that：Including stent, lifting seat, handle, elevating mechanism, pulley assembly, rope；The stent is combined type Stent, easy can dismount, and be placed on below the filter core of central air-conditioning filter element replacing scene；The lifting seat is installed on stent It is interior, it can move up and down on stent along stent, its both sides is connected respectively at rope, can be in the drive lower edge branch of elevating mechanism Move along a straight line inside frame；The handle is installed on one end of elevating mechanism, is connected with elevating mechanism, can drive elevator Structure is rotated and stopped；The elevating mechanism is rack-mount, is fixedly connected with stent, its junction can be adjusted in stent On installation site；The elevating mechanism is connected with rope, and rope can be driven to wind or discharge；The pulley assembly peace On stent, positioned at the lower section of rack connecting plate, fix and be detachably connected with stent, rope is wrapped on pulley；Described Pulley assembly has two, the both sides being symmetrically mounted on above stent；Described rope one end is connected with elevating mechanism, the other end with Lifting seat connects, and middle part coils through pulley blocks；The rope is flexible rope, is cordage either steel wire rope or anchor Chain.

The stent includes cat ladder, connecting plate；The cat ladder has two, is symmetrically mounted on the both ends of connecting plate, its Guiding channel opening on two cat ladders is opposite；The connecting plate is installed on the top of cat ladder, there is two；The connecting plate with The link position of cat ladder can be adjusted.

The cat ladder includes guide groove, montant, cross bar, top plate, connecting hole；The guide groove is arranged on montant, Positioned at one longitudinal side of montant, the length of montant is penetrated through；The guiding slot cross-section open rectangle, its opening direction is in stent Inner side；The montant is installed on the both ends of cross bar, with cross bar vertical connection；Its top is connected with top plate；The montant has Two, it is symmetrically distributed in the both ends of cross bar；The cross bar is installed between two montants, has multiple, and parallel distribution is in montant Length direction, its spacing can adapt to operating personnel and ascend a height the distance to stride；The mounting of roof plate is on montant top, with montant Vertical connection；The top plate outer ledge is concordant with the outer side edges of montant, and inside edge is with stretching out the inner side of montant namely Side where guide groove；The connecting hole is arranged on top plate, there is two, is slotted hole through hole.

The connecting plate includes plate body, mounting hole, pulley blocks installation mounting hole；The plate body uses aluminum alloy plate materials It is made, its length matches with common central air-conditioning filter core sectional dimension；The mounting hole is arranged on plate body both ends, is oval Hole through hole；The pulley blocks mounting hole is arranged in the middle part of plate body, is threaded hole.

The lifting seat includes directive wheel, base, adjustment seat；The directive wheel is installed on below base, can be adjusted Save the length that directive wheel stretches out base；The directive wheel has four, is symmetrically distributed in surrounding below base；The base peace Above directive wheel, it is connected with directive wheel；The base top is connected with adjustment seat, and lower part is connected with rope；Described Adjustment seat is installed on base, is socket connection mode with base, can be adjusted the relative position between adjustment seat and base.

The directive wheel includes roller, roller shaft, pedestal, mounting hole；The roller is installed on the end of roller shaft, It can be rotated freely on roller shaft；The roller outside diameter is less than or equal to the width of the guide groove on the cat ladder of stent；It is described Roller shaft be installed on pedestal on, one end is fixedly connected with pedestal, and the other end is connected with roller, its axis and install centerline hole It is parallel；The pedestal is the long strip shape body of rectangular cross-section, its one end and roller axis connection；The mounting hole is set On pedestal, the lower planes positioned at pedestal and the thickness through pedestal；The mounting hole is slotted hole, its length can fit Answer the width adjusting scope of stent.

The base includes bottom plate, column, directive wheel mounting hole, rope mount hole；The bottom plate is arranged on column Lower end, is aluminum alloy thin siding with uprights vertical；The column is installed on the geometric center of base plate plane, vertical with bottom plate； The column is aluminum alloy hollow tubulose；Fixed bolt hole is provided with outside the column, the fixed bolt hole passes through Wear the wall thickness of column；The column is internally provided with internal thread, outer on the adjustable column in its specification and size and adjustment seat Screw thread matches；The directive wheel mounting hole is arranged on the both sides of the edge of bottom plate, shares 4 groups, every group two, its hole is screw thread Hole；The diameter of the threaded hole is matched with the installation hole width on directive wheel, and every group of two threaded holes are smaller than being oriented to The length of mounting hole on wheel；The mounting hole be located at the same side two groups are located along the same line, and both sides are parallel to each other； The rope mount hole is arranged on bottom plate, positioned at column both sides, the middle part with side where directive wheel mounting hole；Described Rope mount hole is opening circular hole, it is open towards the edge of bottom plate.

The adjustment seat includes adjustable column, pallet；The adjustable column is installed on pallet lower part, and is located at holding tray surface Geometric center；The adjustable column is hollow aluminium alloy tubular body；The adjustable column excircle has external screw thread, its is externally threaded Specification and size match with the internal thread on the column on base；The pallet is installed on the upper end of adjustable column, its plane It is vertical with column axial line；The pallet is made or is made of plastic plate for thin-wall aluminum alloy plate；The pallet upper table Face is provided with anti-skid device；The anti-skid device is multiple equally distributed raised or sunken.

The handle includes mounting ring, fastener hole, Holder for hand crank, crank；The mounting ring is arranged on the one of Holder for hand crank End, is circular ring shape, and the transmission shaft outside diameter of its diameter of bore and elevating mechanism matches；The fastener hole is arranged on mounting ring Excircle, it is vertical with the internal control of mounting ring；The fastener hole is threaded hole；The Holder for hand crank is arranged on the cylindrical of mounting ring The endoporus of Zhou Bingyu mounting rings is vertical, its both ends is concordant with the both ends of mounting ring；There are open slot, one end among the Holder for hand crank It is connected with mounting ring, the other end is hinged by axis pin and crank；The crank is installed on the end of Holder for hand crank, to be cylindrical, It is hinged, can be freely rotated on Holder for hand crank by axis pin and Holder for hand crank, its rotational angle is not less than 180 °.

The elevating mechanism includes deck, transmission shaft, left rope sheave, right rope sheave；The deck has two, installs respectively Fastened in the both sides of the unilateral cat ladder of stent, and using screw, its installation site can be adjusted along cat ladder, the other end of deck with It is driven axis connection；The transmission shaft is installed on two decks, can be rotated on deck, and wherein one end end connects with handle Connect；The left rope sheave is installed on transmission shaft, is fixedly connected with transmission shaft；The left rope sheave is made of plastics；Described There is groove on left rope sheave excircle, the width and depth of its groove can accommodate single rope and be completely wound around in its groove；The left side Cable end fixed element is provided with rope sheave, this fixed element is to set through hole in groove sidewall；The right rope sheave installation On the right side of left rope sheave, its structure is identical with left rope sheave.

The deck includes fastener hole, baffle, connecting plate, support plate, transmission axis hole；The fastener hole is arranged on baffle On, there is two or more, be threaded hole, through Weir Plate Thickness；The baffle plate setting is in connecting plate one end, one end vertical with connecting plate It is hanging that the other end is connected with connecting plate；The connecting plate is arranged on the end of baffle and support plate, its both ends respectively with baffle and support plate End vertical connection；The support plate is arranged on one end of connecting plate, vertical with connecting plate, on the inside of its support plate with the inside of baffle away from From the section transverse width of the montant of the cat ladder more than or equal to stent；The support plate lower end is provided with transmission shaft mounting hole, should Mounting hole can accommodate and fixed corresponding bearing；The transmission axis hole is arranged on the lower end of support plate, vertical with support plate plane, For through hole；The transmission axis hole can be installed and the matched rolling bearing of transmission shaft.

The pulley assembly includes pulley, pulley base, axis pin；The pulley is installed on axis pin, can be around axis pin Rotate；The pulley excircle has groove, and the depth and width of its groove and the diameter of rope match；In the pulley endoporus Bearing is installed；The pulley base is installed on connecting plate, is L-shaped, so convenient to load rope from pulley side；Described Axis pin is installed on pulley base, is fixedly connected with pulley base；The axis pin is vertical with the side panels of pulley base, and one end hangs Sky, its free end are connected with pulley.

Beneficial effect

The beneficial effects of the present invention are can simplify central air-conditioning filter element replacing, save labour, securely and reliably, no Damage filter core.

Brief description of the drawings

Fig. 1 is the structure diagram of the present invention

1. stent, 2. lifting seats, 3. handles, 4. elevating mechanisms, 5. pulley assemblies, 6. ropes.

Fig. 2 is the structure diagram of the stent of the present invention

11. cat ladder, 12. connecting plates.

Fig. 3 is the structure diagram of cat ladder

111. guide groove, 112. montants, 113. cross bars, 114. top plates, 115. connecting holes.

Fig. 4 is the structure diagram of connecting plate

121. plate body, 122. mounting holes, 123. pulley blocks installation mounting hole.

Fig. 5 is the structure diagram of lifting seat

21. directive wheel, 22. bases, 23. adjustment seats.

Fig. 6 is the structure diagram of directive wheel

211. rollers, 212. roller shafts, 213. pedestals, 214. mounting holes.

Fig. 7 is the structure diagram of base

221. bottom plates, 222. columns, 223. directive wheel mounting holes, 224. rope mount holes.

Fig. 8 is the structure diagram of adjustment seat

231. adjustable columns, 232. pallets.

Fig. 9 is the structure diagram of handle

31. mounting ring, 32. fastener holes, 33. Holder for hand crank, 34. cranks.

Figure 10 is the structure diagram of elevating mechanism

41. deck, 42. transmission shafts, 43. left rope sheaves, 44. right rope sheaves.

Figure 11 is the structure diagram of deck

411. fastener holes, 412. baffles, 413. connecting plates, 414. support plates, 415. transmission axis holes.

Figure 12 is the structure diagram of pulley blocks

51. pulley, 52. pulley bases, 53. axis pins.

Embodiment

In order to further illustrate technical scheme, in conjunction with the embodiment of the brief description of the drawings present invention；Such as Figure 12, selects in this example aluminium alloy to be made into the common rolling bearing of 30 millimeters of outside diameter, endoporus and national standard, bearing 6 millimeters of 6 mm of thickness of internal diameter matches, 20 millimeters of thickness, sets 5 millimeters wide on excircle, and deep 5 millimeters of groove is as pulley 51, select the axis pin with shaft end ring of the general diameter millimeter of the industry to select aluminum alloy plate materials, thickness as axis pin 53 5 millimeters, L-shaped is made, 20 millimeters of its bond length, long 40 millimeters of edge lengths, 30 millimeters of uniform width, in the threshold value of long side 15 millimeters of lower end making pin shaft hole, as pulley base 52, axis pin 53 is installed on pulley base 52, pulley 51 is installed on axis pin On 53, the implementation of pulley blocks 5 is just completed.

Such as Figure 11, Figure 10, selects aluminum alloy plate materials in this example, 5 millimeters of its thickness, selects 40 millimeters of the width of baffle 412, 40 millimeters of length is so in order to match the sectional dimension of the montant 112 on cat ladder 11；Select the width of connecting plate 413 40 millimeters long 41 millimeters of degree, selects 40 millimeters of the width of support plate 414,100 millimeters of length, by the both ends of connecting plate 413 respectively at 412 He of baffle The end part aligning of support plate 414, polishes after welding, ensures to be mutually perpendicular to；Transmission axis hole 415 is made in support plate lower end, is selected in this example By the use of the hole of rolling bearing transition as transmission axis hole 415, rolling bearing is installed in hole, the diameter of bore of its rolling bearing is equal to The diameter of transmission shaft 42, sets the tapped through hole for the M6 that two spacing are 20 millimeters, parallel to baffle 412 on baffle 412 Edge is as fastener hole 411, and this completes the implementation of deck 41；Select plastic material that the general wiring crop rotation of the industry is made For left rope sheave 43 and right rope sheave 44,5 millimeters of the rope fastening hole diameter of groove sidewall is arranged through on the inside of rope sheave groove；Select one's own profession Two decks 41 are stuck on cat ladder 11, will be driven as transmission shaft 42 by the cylindrical transmission shaft of 12 millimeters general of diameter of industry Axis 42 is through deck 41 and installs left rope sheave 43 and right rope sheave 44 on it, using national standard plain bolt M6, passes through fastening Hole 411 is locked with cat ladder 11, just completes the implementation of elevating mechanism 4；As a result of light materials such as aluminium alloy and plastics, and And design small size, it is easy to carry, it is easy to operate, while rolling bearing is employed, it is light in operation.

As selected aluminum alloy materials in Fig. 9 this example, respectively as mounting ring 31, Holder for hand crank 33, crank 34 material, this example Middle 12 millimeters of diameter of bore for selecting mounting ring 31,20 millimeters of outside diameter, 16 millimeters of thickness；Select the milli of thickness 16 of Holder for hand crank 33 Rice, 60 millimeters of length, 14 millimeters of width, 50 millimeters of opening well width 4 mm depth, is set in the middle part of at 6 millimeters of end Crank mounting hole, 4 millimeters of the diameter in hole run through groove and two side；Select the cylinder of 120 millimeters of 8 mm length of diameter to be used as to shake 34, the flat of 4 millimeters of 20 mm of thickness of length is produced in its one end, pin hole, 4 millimeters of pin hole diameter, another are made on flat One end end carries out radiused processing, scratch operating personnel when avoiding operating, and flat length guarantees 34 energy of crank for being Enough swing more than 180 °, stop rotating easy to lock elevating mechanism 3；The straight pin of national standard is selected, installed in 34 He of crank The pin hole and crank mounting hole of Holder for hand crank 33, ensure that crank 34 can be freely rotated, this completes the implementation of handle 3.

Such as Fig. 5, Fig. 6, Fig. 7, Fig. 8, the aluminium-alloy pipe of diameter 400 millimeters of 30 mm length, 4 millimeters of wall thickness is selected in this example As adjustable column 231, the aluminium alloy plate of 2 millimeters of thickness is selected to be made into the circle of 200 millimeters of diameter as pallet 232, with Just the picking-up of small filter core is adapted to, is selected in this example and the rubber slab of 1 millimeter of thickness is pasted in the upper surface of pallet 232 as anti-skidding Layer；Adjustable column 231 is connected with vertical concentric below pallet 232, just completes the implementation of adjustment seat 23；Selected in this example thick The aluminium alloy plate of 3 millimeters of degree chooses 400 millimeters of its width, 600 millimeters of length as bottom plate 221；Select 40 millimeters of wall thickness of diameter The aluminium-alloy pipe of 5 500 millimeters of mm lengths is as column 222, by its one end and 221 vertical welding of bottom plate, and top wherein External peripheral surface makes the threaded hole of M6, through side wall thickness；The specification for choosing directive wheel mounting hole 223 is M6, point four components For cloth at 221 both ends of bottom plate, the distance at its hole center to edge is equal to the half of directive wheel base width；Every group of pitch of holes selects 50 Millimeter, to increase the stretching adjustable range of directive wheel 21；Select rope mount hole 224 a diameter of 6 millimeters, its opening width For 4.5 millimeters, the both ends center of bottom plate 221 is arranged on, this completes the implementation of base 22；Outside diameter is selected in this example 30 millimeters, the rolling bearing that 10 millimeters of thickness is selected and the matched round steel conduct of rolling bearing endoporus as roller 211 Roller shaft 212；Select 12 millimeters of thickness, the material of the aluminum alloy plate materials of 300 millimeters of 20 mm length of width as pedestal 213, By its one end and roller axis connection, 200 millimeters of length is opened up in its plane, the slotted hole that 7 millimeters of width is as mounting hole 214, this completes the implementation of directive wheel 21；Directive wheel 21 is installed on to the lower section of base 22, is connected by screw bolts, is ensured The length that directive wheel 21 stretches out base 22 can be adjusted；The directive wheel 21 selected in this example has four, is symmetrically distributed in base 22 Lower section surrounding；Base 22 is installed on to the top of directive wheel 21, is connected with directive wheel 21；By 22 top column of base 222 endoporus and the socket of adjustable column 231 of adjustment seat 23 connect, and blending bolt fastening, lower part is connected with rope 6；By adjustment seat 23 are installed on base 22, and release fastening bolt can adjust the relative altitude between adjustment seat 23 and base 22；Thus complete The implementation of lifting seat 2.

Such as Fig. 2, Fig. 3, Fig. 4, the aluminium alloy plate of 5 millimeters of thickness is selected to be used as plate body 121 in this example, it is 50 to choose its width Millimeter, 1000 millimeters of length；250 millimeters of the length of mounting hole 122 is selected, 7 millimeters of width, two are set using both ends, hole Threshold value 30 millimeter of the outer end apart from plate body 121；Pulley blocks mounting hole 123 is selected to meet the general of national standard for two M6 Logical tapped through hole, it is symmetrical with the length center line of plate body 121；Two pitchs of holes and the mounting hole spacing on pulley base 52 from identical, In order to adapt to the adjusting of long range, reinforcing rib can be installed additional in 121 side of plate body, to increase the rigidity of plate body 121；It is thus complete Into the implementation of connecting plate 12；U-shaped aluminium alloy extrusions is selected in this example, 5 millimeters of its wall thickness, 30 millimeters of U-shaped opening width, entirety 25 millimeters of depth of section, as montant 112, for its U-type groove as guide groove 111, such selection is easy, makes simple；In this example Two montants 112 are selected, the opening direction of its guide groove 111 is identical, the material identical with montant 112 is selected, as cross bar 113,600 millimeters of intercepted length, by its it is U-shaped Open Side Down, both ends are selected respectively in two 112 vertical weldings of montant, this example With multiple cross bars 113, the distance between each two cross bar 113 is 400 millimeters, is evenly distributed on the whole length of montant 112, so The kind of material is reduced, saves manufacture cost, convenient buying；The material identical with connecting plate 12 of top plate 114, knot are selected in this example Structure and size, the mounting hole 122 on connecting plate 12 are used as connecting hole 115, so convenient manufacture, reduction part kind, by one Side is identical with the concordant both ends extension elongation of the backside of the U-shaped opening of montant 112 with 112 firm welding of montant, thus complete Into the implementation of cat ladder 11；Two cat ladders 11 are selected in this example, two connecting plates 12, two cat ladders 11 are led in montant 112 It is opposite to the side of groove 111, by the mounting hole 122 on two connecting plates 12 respectively with the connecting hole on 11 upper plate 114 of cat ladder 115 are connected by screw bolts, and just complete the implementation of stent 1；So have it is light, it is quick detachable, can be according to the filter core replaced Size adjusting bracket 1 opening distance, the features such as adaptability is stronger.

Such as Fig. 1, after stent 1 is combined, lifting seat 2 is installed on to the inner space of stent 1, by leading on lifting seat 2 Combined and be placed in guide groove 111 with the guide groove 111 on the montant 112 of the cat ladder 11 on stent 1 to wheel 21, can Move up and down on stent 1 along stent 1, its both sides is connected respectively at the end of rope 6, can be under the drive of elevating mechanism 4 Move along a straight line along inside stent 1；Handle 3 is installed on to one end of elevating mechanism 4, is fixed and connected using bolt and elevating mechanism 4 Connect, elevating mechanism 4 can be driven to rotate and stop；Elevating mechanism 4 is installed on stent 1, is fixedly connected with stent 1, it connects Connection bolt is unclamped at the place of connecing can adjust setting height(from bottom) position of the elevating mechanism 4 on stent 1；Elevating mechanism 4 and rope 6 are connected Connect, rope 6 can be driven to wind or discharge；Pulley blocks 5 are installed on stent 1, positioned at the lower section of 1 connecting plate 12 of stent, with Stent 1 is fixed and is detachably connected, and rope 6 is wrapped on pulley 51；Select pulley blocks 5 there are two, be symmetrically mounted on the top of stent 1 Both sides；The steel wire rope of 4 millimeters of diameter is selected to knot as rope 6 in the end of rope 6, the diameter that it knots is big in this example In 12 millimeters, rope one end is stayed in outside rope sheave groove from the rope fastening hole on the rope sheave of elevating mechanism 4 through its knotting one end Portion, the other end are caught in connection from the open pore on the bottom plate 221 on lifting seat 2, and middle part coils through the pulley groove of pulley blocks 5 It is interior；Rope is flexible rope, can also choose braided fiber rope or anchor chain, this completes a kind of central air-conditioning filter core more Change the implementation of instrument.

In application, the present invention, which is in, breaks state, and it is so easy to carry and transport, the present invention is transported to construction site, Corresponding width is combined into according to the size of the filter core to be replaced, and adjusts the installation position of lifting seat 2 and elevating mechanism 4 Putting, for operating personnel to filter core installation place from cat ladder 11, swinging handle 3, filter core position is risen to by lifting seat 2, and with Filter core contacts, and by 34 backswing of crank of handle 3, this crank 34 can be contacted with deck 41, so as to prevent rope sheave from reversing, caused Lifting seat 2 falls automatically to be caused not realizing the work for holding up filter core, pulls down filter core retaining element, crank 34 is moved back to raw bits Put, swinging handle 3, elevating mechanism 4 is reversed, so that lifting seat 2 declines, can be removed until falling on personnel under filter core on ground The position arrived, by the backswing again of the crank of handle 3, locking elevating mechanism 4 will not produce rotation, and operating personnel are by old filter Core is removed, it would be desirable to which the new filter core of replacement is put into the top pallet of lifting seat 2, moves crank 34, rotational handle 3, makes lifting Seat 2 rises, and until new filter core arrival installation site, moves crank 34 and locks elevating mechanism 4, new filter core is fixed, moves crank 34, elevating mechanism 4 is unlocked, ground is arrived under operating personnel, elevating mechanism 4 is pulled down, while lifting seat 2 is pulled down, rope 6 is twined It is wound on the rope sheave of elevating mechanism 4, dismantles connecting plate 12, stent 1 is split, just completes a working cycles；This ensure that Filter core safety, reduces operating personnel, alleviates the labor intensity of operating personnel, carries and easy to operate, improves filter core more Change efficiency and quality.

Claims (5)

1. A kind of 1. central air-conditioning filter element replacing instrument, it is characterised in that：Including stent, lifting seat, handle, elevating mechanism, pulley Component, rope；The stent is modular support, easy can dismount, is placed on central air-conditioning filter element replacing scene filter core Lower section；The lifting seat is installed in stent, can be moved up and down on stent along stent, its both sides connects respectively at rope Connect, can move along a straight line under the drive of elevating mechanism along internal stent；The handle is installed on one end of elevating mechanism, It is connected with elevating mechanism, elevating mechanism can be driven to rotate and stop；The elevating mechanism is rack-mount, consolidates with stent Fixed connection, its junction can adjust the installation site on stent；The elevating mechanism is connected with rope, can be with running rope Rope is wound or release；The pulley assembly is rack-mount, positioned at the lower section of rack connecting plate, is fixed with stent detachable Connection, rope are wrapped on pulley；The pulley assembly has two, the both sides being symmetrically mounted on above stent；The rope Suo Yiduan is connected with elevating mechanism, and the other end is connected with lifting seat, and middle part coils through pulley blocks.
2. A kind of 2. central air-conditioning filter element replacing instrument according to claim 1, it is characterised in that：The rope is flexibility Rope.
3. A kind of 3. central air-conditioning filter element replacing instrument according to claim 1, it is characterised in that：The rope is fiber Rope.
4. A kind of 4. central air-conditioning filter element replacing instrument according to claim 1, it is characterised in that：The rope is steel wire Rope.
5. A kind of 5. central air-conditioning filter element replacing instrument according to claim 1, it is characterised in that：The rope is anchor Chain.