CN112978635A - Lifting device for operation platform of absorption tower - Google Patents

Abstract

The invention provides a lifting device for an operation platform of an absorption tower. Absorption tower operation platform elevating gear is used for the absorption tower, be provided with two-layer at least along the spaced apart spray pipe layer of upper and lower direction in the absorption tower, absorption tower operation platform elevating gear includes two at least elevating system and at least one operation platform, every elevating system includes the support frame, the fixed plate, first driving piece, the second driving piece, two guide bodies and the link mechanism who is used for supporting operation platform, the inner wall at the absorption tower is just fixed along longitudinal extension to the support frame, fixed plate is along horizontal extension and fixed connection in the support frame, first driving piece and second driving piece are fixed respectively at the lower surface of fixed plate and upwards are passed the fixed plate. The lifting device for the absorption tower operation platform can shorten the cleaning time of the spray pipe and has high safety performance.

Description

Lifting device for operation platform of absorption tower

Technical Field

The invention relates to the technical field of thermal power plant equipment, in particular to an absorption tower operation platform lifting device.

Background

At present, in an absorption tower of a thermal power plant, in order to reduce the concentration of sulfur dioxide in the absorption tower, generally, an absorption liquid is sprayed into the absorption tower to absorb the sulfur dioxide therein, but since the spray pipes spraying the absorption liquid are arranged on the top of the absorption tower, when the spray pipes of the absorption tower are regularly cleaned and dredged, generally, the form of a scaffold is built, so that an operation platform is built at a high place, the workload of the mode is large, the required operation time is long, and because the spray pipes are generally arranged in the up-down direction, the building of the scaffold between the multiple layers is also very inconvenient.

Disclosure of Invention

The invention aims to provide a lifting device for an absorption tower operation platform, which aims to solve the technical problem.

The invention provides an absorption tower operation platform lifting device, which is used for an absorption tower, wherein at least two spray pipe layers which are spaced apart from each other along the vertical direction are arranged in the absorption tower, the absorption tower operation platform lifting device comprises at least two lifting mechanisms and at least one operation platform, each lifting mechanism comprises a support frame, a fixed plate, a first driving part, a second driving part, two guide bodies and a connecting rod mechanism for supporting the operation platform, the support frame extends along the longitudinal direction and is fixed on the inner wall of the absorption tower, the fixed plate extends along the transverse direction and is fixedly connected to the support frame, the first driving part and the second driving part are respectively fixed on the lower surface of the fixed plate and penetrate through the fixed plate upwards, the two guide bodies are oppositely arranged on the upper surface of the fixed plate, one end of the connecting rod mechanism is slidably arranged on one guide body and is driven by the first driving part to lift, the other end of the link mechanism is slidably arranged on the other guide body and driven to lift by the second driving piece, the first driving piece extends, meanwhile, the second driving piece retracts, and at least part of the link mechanism is lifted.

Optionally, the link mechanism includes a first transverse rod, a second transverse rod, a rotation rod, a third rod, a fourth rod and two connecting shafts, the first transverse rod is connected to the output end of the first driving member and is perpendicular to the support frame, the second transverse rod is connected to the output end of the second driving member and is perpendicular to the support frame, the first transverse rod and the second transverse rod are parallel, the rotation rod includes a first rod and a second rod in an L shape, the first rod is disposed obliquely, one end of the second rod, which is far away from the first rod, is slidably connected to one end of the second transverse rod, which is far away from the support frame, one of the connecting shafts sequentially passes through one of the guide bodies, the lower end of the first rod, the lower end of the first transverse rod and the lower end of the third rod, one end of the second rod is connected to the first rod and is perpendicular to the first rod, the other end of the second rod is slidably connected with the second transverse rod, the fourth rod extends obliquely downwards, the other connecting shaft sequentially penetrates through the upper end of the fourth rod, one end of the second transverse rod, close to the support frame, and the other end of the second transverse rod, the third rod is far away from one end of the support frame, hinged to the middle of the fourth rod, and the first transverse rod is far away from one end of the support frame, slidably connected with one end of the support frame, far away from the fourth rod.

Optionally, the support frame includes two vertical poles and a plurality of horizontal poles of connecting between two vertical poles along longitudinal extension, and is a plurality of the interval sets up between the horizontal pole, elevating system still includes third driving piece, fourth driving piece, first fixing base, second fixing base, first stopper and second stopper, first fixing base with the third driving piece is installed on the first transverse bar, the second fixing base with the fourth driving piece is installed on the second transverse bar, first stopper is worn to locate first fixing base and by the third driving piece drive is flexible, the second stopper is worn to locate the second fixing base and by the fourth driving piece drive is flexible.

Optionally, the number of the spraying pipe layers comprises at least three layers, the number of the operation platforms comprises at least three layers, the operation platforms and the spraying pipe layers are spaced in a one-to-one correspondence manner along the vertical direction, and every two adjacent operation platforms are connected together through a plurality of lifting rod assemblies.

Optionally, every lifter assembly includes first lifter, second lifter, first joint spare, second joint spare, the lower extreme of first lifter is fixed on the lower floor the work platform is last, the upper end of first lifter with the lower extreme of second lifter is connected, the upper end of second lifter is fixed on the upper strata on the work platform, first joint spare with second joint spare detachably butt joint first lifter with the junction of second lifter.

Optionally, the cross sections of the first clamping piece and the second clamping piece are semicircular, a plurality of clamping grooves are formed in one side, facing the second clamping piece, of the first clamping piece, and L-shaped clamping portions in one-to-one correspondence with the clamping grooves are formed in one side, facing the first clamping piece, of the second clamping piece.

Optionally, a slot is disposed on the periphery of the first lifting rod and/or the second lifting rod, and a clamping block corresponding to the slot is disposed on the first clamping member and the second clamping member, or

The periphery of the first lifting rod and/or the second lifting rod is provided with a clamping block, and the first clamping piece and the second clamping piece are provided with clamping grooves corresponding to the clamping block.

Optionally, the first driving part, the second driving part, the third driving part and the fourth driving part are hydraulic rods, the absorption tower operation platform lifting device further includes a hydraulic rod adjusting device, the hydraulic rod adjusting device includes a first motor, a first valve body, two first valve cores, a first pipeline and a second pipeline, the two first valve cores are coaxially and alternately disposed in the first valve body and are driven by the first motor to rotate synchronously, the first valve body is further provided with a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the two first valve cores are respectively provided with oil guide holes corresponding to the first valve body in the height direction, the first valve body is provided with a first oil inlet and a second oil inlet corresponding to the two first valve cores and communicated with the oil guide holes, and the first end of the first pipeline and the first end of the third pipeline are opposite to and selectively communicated with the oil guide hole of one first valve core The first end of the second pipeline and the first end of the fourth pipeline are opposite and can be selectively communicated with the oil guide hole of the other first valve core, the second end of the second pipeline is connected to the first pipeline in a bypassing mode, the second end of the fourth pipeline is connected to the third pipeline in a bypassing mode, the first pipeline and the second pipeline are communicated with the first pipeline together, the third pipeline and the fourth pipeline are communicated with the second pipeline respectively, the first pipeline is communicated with the first oil port of the first driving piece and the second oil port of the second driving piece respectively, the second pipeline is communicated with the third oil port of the second driving piece and the fourth oil port of the second driving piece respectively, the first oil port is located below the third oil port, and the fourth oil port is located below the second oil port.

Optionally, the hydraulic rod adjusting apparatus further includes a second motor, a cam, an adjusting mechanism, a first tube, a second tube, a third tube, a fourth tube, and a fifth tube, the adjusting mechanism includes a second valve body, a second valve core, and a spring, the cam is respectively connected to an output end of the second motor and the second valve core to drive the second valve core to move in the second valve body, the second valve body is provided with a spring to provide a restoring force when the second valve core moves in a direction away from the output end of the second driving member, the second valve core is provided with a first groove and a second groove, the second valve core is further provided with a connecting tube, the first groove is located between the second groove and the spring, the first tube and the second tube are disposed at one side of the second valve body, the third tube, the fourth tube, and the fifth tube are disposed at the other side of the second valve body, the hydraulic rod adjusting device is provided with a first position and a second position, wherein the spring is in an initial state, the spring is in a compressed state, the first position is formed by communicating the first pipe with the third pipe through the first groove, the second pipe is communicated with the fourth pipe through the connecting pipe, the second position is formed by communicating the first pipe with the third pipe through the connecting pipe, communicating the second pipe with the fifth pipe through the second groove, and communicating the first pipe with the second pipe and the second pipe with two oil ports of the third driving piece respectively.

Optionally, the number of the cams and the adjusting mechanisms is two, the two cams are correspondingly arranged in the vertical direction and are driven to rotate by the second driving piece, the two adjusting mechanisms are correspondingly arranged in the vertical direction, and the first pipe and the second pipe on the lower layer are respectively communicated with the two oil ports of the fourth driving piece.

The embodiment of the invention has the beneficial effects that: because the support frame can be fixed on the inner wall of absorption tower, two elevating system set up in the absorption tower relatively, under the effect of first driving piece and second driving piece, can come the operation platform on the jacking link mechanism through at least part of link mechanism, because link mechanism extends to the central direction of absorption tower for link mechanism can be bigger with the area of contact of operation platform, thereby can support the operation more steadily and level. Compared with the mode of adopting the scaffold, the lifting device does not need to spend a large amount of manpower and material resources to build the scaffold, so that the workload is reduced, the cleaning time of a spraying pipe layer is shortened, and the potential safety hazard of building the scaffold is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an absorption tower operation platform lifting device provided in an embodiment of the present invention, wherein only a part of an absorption tower is shown;

FIG. 2 is a schematic view of the structure of FIG. 1 from a first perspective, wherein the absorber tower is not shown;

FIG. 3 is a schematic diagram of the structure of FIG. 1 from a second perspective, wherein the absorber tower is not shown;

FIG. 4 is an exploded view of the lifter;

FIG. 5 is a schematic view of the structure of FIG. 4 from another perspective;

FIG. 6 is a schematic structural view of the lifting mechanism;

FIG. 7 is a schematic diagram of the first view angle of FIG. 6;

FIG. 8 is a schematic diagram of the second view of FIG. 6;

FIG. 9 is a schematic view of a portion of the structure of FIG. 6;

FIG. 10 is a schematic view of a portion of the structure of FIG. 6;

FIG. 11 is a schematic structural diagram of a hydraulic lever adjustment device provided in an embodiment of the present invention;

FIG. 12 is a schematic view of the structure of FIG. 11 from another perspective;

FIG. 13 is a schematic diagram of a portion of a hydraulic ram adjustment mechanism provided in accordance with an embodiment of the present invention;

fig. 14 is a schematic view of the structure of fig. 13 from another viewing angle.

Icon: 101-a support frame; 1011-vertical bar; 1012-cross bar; 102 a-a first guide; 1021 a-a guide slot; 102 b-a second guide body; 103-a fixed plate; 104 a-a first drive member; 104 b-a second drive member; 105 a-a first transverse bar; 105 b-a second transverse bar; 106 a-a first fixed seat; 106 b-a second fixed seat; 107 a-third drive member; 107 b-a fourth drive; 108 a-a first stopper; 108 b-a second stopper; 109-rotating rods; 1091-a first lever; 1092-a second lever; 110-a third rod; 111-fourth bar; 112-a connecting shaft;

200-mounting plate; 210-a first motor; 220 a-a first conduit; 220 b-a second conduit; 221-a first conduit; 222-a second conduit; 223-a third line; 224-a fourth line; 230-a first valve body; 231-a first valve; 240-a first spool; 241-oil guide holes; 250-a first oil inlet; 260-a second motor; 261-a first cam; 262-a second cam; 270-a second valve body; 271-a second spool; 2711-first slot; 2712-connecting tube; 2713-a second slot; 281-a first tube; 282-a second tube; 283-a third tube; 284-fourth tube; 285-fifth tube; 286-a second valve; 290-a spring; 291-first joint; 292-a second joint;

300-a work platform; 310-supporting rolls; 321-a first lifting rod; 322-a second lifter; 3221-a first slot; 3222-a second slot; 323-first snap-in member; 3231-first clip; 3232-card slot; 324-a second snap; 3241-second fixture block; 3242-a snap-fit portion;

400-an absorption column; 410-shower layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this embodiment, fig. 1 shows only a part of the structure of the absorption tower 400, and it is understood that the entire structure of the absorption tower 400 is a hollow cylindrical structure.

As shown in fig. 1, 2, 3, 5, 6 and 7, the present invention provides an absorption tower operation platform lifting device, which is used for an absorption tower 400, wherein at least two spraying tube layers 410 spaced apart in the up-down direction are arranged in the absorption tower 400, the spraying tube layers 410 are fixed on the upper portion of the absorption tower 400, spraying heads are arranged on the spraying tube layers 410 for spraying sulfur dioxide absorption liquid, the absorption tower operation platform lifting device comprises at least two lifting mechanisms and at least one operation platform 300, the operation platform 300 can be configured in a shape matching with the absorption tower 400, for example, can be configured in a circular frame structure, and is configured in a frame structure, so that on one hand, the weight of the operation platform 300 can be reduced, on the other hand, a channel for workers to move up and down and a working channel for maintenance operation can be formed, each lifting mechanism comprises a support frame 101, a support frame, The absorption tower comprises a fixing plate 103, a first driving part 104a, a second driving part 104b, two guiding bodies and a link mechanism for supporting the operation platform, wherein the supporting frame 101 extends along the longitudinal direction and is fixed on the inner wall of the absorption tower 400, the fixing plate 103 extends along the transverse direction and is fixedly connected to the supporting frame, the first driving part 104a and the second driving part 104b are respectively fixed on the lower surface of the fixing plate 103 and penetrate through the fixing plate 103 upwards, the two guiding bodies are oppositely arranged on the upper surface of the fixing plate 103, one end of the link mechanism is slidably arranged on one guiding body and driven by the first driving part 104a to lift, the other end of the link mechanism is slidably arranged on the other guiding body and driven by the second driving part 104b to lift, the second driving part 104b retracts while the first driving part 104a extends, and at.

Through the above technical scheme, the support frame 101 can be fixed on the inner wall of the absorption tower 400, the two lifting mechanisms are oppositely arranged in the absorption tower 400, the work platform 300 on the link mechanism can be jacked up through at least part of the link mechanism under the action of the first driving piece 104a and the second driving piece 104b, and the contact area between the link mechanism and the work platform 300 is larger due to the fact that the link mechanism extends towards the center direction of the absorption tower 400, so that the work platform 300 can be more stably supported. Compared with the mode of adopting the scaffold, the lifting device does not need to spend a large amount of manpower and material resources to build the scaffold, thereby reducing the workload, shortening the cleaning time of the spray pipe layer 410 and avoiding the potential safety hazard existing in building the scaffold.

As shown in fig. 6-9, in detail, the link mechanism includes a first transverse rod 105a, a second transverse rod 105b, a rotating rod 109, a third rod 110, a fourth rod 111 and two connecting shafts 112, the first transverse rod 105a is connected to the output end of the first driving member 104a and is perpendicular to the supporting frame 101, when the first driving member 104a extends or retracts, the first transverse rod 105a can be driven to move up and down, the second transverse rod 105b is connected to the output end of the second driving member 104b and is perpendicular to the supporting frame 101, when the second driving member 104b extends or retracts, the second transverse rod 105b can be driven to move up and down, the first transverse rod 105a and the second transverse rod 105b are parallel, the rotating rod 109 includes a first rod 1091 and a second rod 1092 in an L shape, the first rod 1091 and the second rod 1092 in an L shape are connected to each other and form a U-shaped structure, the first rod 1091 is disposed obliquely, and the first rod 1091 gradually extends upward toward the center of the absorption tower, the end of the second rod 1092 away from the first rod 1091 is slidably connected to the end of the second transverse rod 105b away from the supporting frame 101, one connecting shaft 112 sequentially penetrates through one of the guide bodies, the lower end of the first rod 1091, the lower end of the first transverse rod 105a and the lower end of the third rod 110, one end of the second rod 1092 is connected with the first rod 1091 and is perpendicular to the first rod 1091, the other end of the second rod 1092 is slidably connected with the second transverse rod 105b, the fourth rod 111 extends obliquely downwards, the other connecting shaft 112 sequentially penetrates through the upper end of the fourth rod 111, one end, close to the support frame 101, of the second transverse rod 105b and the other guide body, one end, far away from the support frame 101, of the third rod 110 is hinged to the middle of the fourth rod 111, and one end, far away from the support frame 101, of the first transverse rod 105a is slidably connected with one end, far away from the support frame 101.

According to the above, when the first driving element 104a extends, the first driving element 104a drives the first transverse rod 105a, the connecting shaft 112, the first rod 1091, the second rod 1092 and the third rod 110 to rise relative to one guide body, and at the same time, the second driving element 104b contracts, the second driving element 104b drives the second transverse rod 105b and the fourth rod 111 to descend relative to the other guide body, because the third rod 110 is hinged to the middle of the fourth rod 111, and the second rod 1092 is slidably connected to the second transverse rod 105b, the end of the third rod 110 hinged to the fourth rod 111 gradually descends, and the end of the third rod 110 far from the fourth rod 111 gradually rises. Accordingly, the first and second rods 1091 and 1092 may be gradually raised as the first and second drivers 104a and 104b are extended and retracted, thereby performing a jacking operation on the work platform 300 located on the link mechanism.

Further, the projection of the third rod 110, the end of the second rod 1092 far away from the first rod 1091 and the fourth rod 111 on the horizontal plane are parallel, and the arrangement structure is such that the third rod 110, the end of the second rod 1092 far away from the first rod 1091 and the fourth rod 111 do not interfere with each other when moving, so as to ensure the normal movement of the link mechanism.

As shown in fig. 6-9, in this embodiment, the supporting frame 101 includes two vertical rods 1011 extending along the longitudinal direction and a plurality of cross rods 1012 connected between the two vertical rods 1011, the two vertical rods 1011 and the plurality of cross rods 1012 form a ladder shape, the plurality of cross rods 1012 are disposed at intervals, the lifting mechanism further includes a third driving element 107a, a fourth driving element 107b, a first fixing seat 106a, a second fixing seat 106b, a first limiting block 108a and a second limiting block 108b, the first fixing seat 106a and the third driving element 107a are mounted on the first transverse rod 105a, the first fixing seat 106a is close to the supporting frame 101 relative to the third driving element 107a, the second fixing seat 106b and the fourth driving element 107b are mounted on the second transverse rod 105b, the second fixing seat 106b is close to the supporting frame 101 relative to the fourth driving element 107b, the first limiting block 108a is inserted into the first fixing seat 106a and driven by the third driving element 107a to extend and retract, the second limiting block 108b is disposed through the second fixing seat 106b and driven by the fourth driving component 107b to extend and retract, when the first limiting block 108a is pushed onto the cross bar 1012 under the action of the third driving component 107a, and the second limiting block 108b is pushed onto the other cross bar 1012 under the action of the fourth driving component 107b, because the first driving component 104a can support the first transverse rod 105a and the third driving component 107a and the first fixing seat 106a are fixed on the first transverse rod 105a, the second driving component 104b can support the second transverse rod 105b and the fourth driving component 107b and the second fixing seat 106b are fixed on the second transverse rod 105b, the first limiting block 108a and the second limiting block 108b can be supported by the two cross bars 1012, so as to reduce the supporting force of the first driving component 104a on the first transverse rod 105a and the second driving component 104b on the second transverse rod 105b, it is ensured that the first and second lateral bars 105a and 105b are kept horizontal to improve the stability of the entire lifting mechanism. It will be appreciated that when the first and second transverse bars 105a, 105b need to be raised or lowered, the third driving member 107a needs to be retracted first to disengage the first stopper 108a from the cross bar 1012, and correspondingly, the fourth driving member 107b needs to be retracted first to disengage the second stopper 108b from the other cross bar 1012.

As shown in fig. 9, further, the first stopper 108a and the second stopper 108b are rectangular structures, when the first driving element 104a drives the first stopper 108a to one of the cross bars 1012, the bottom surface of the first stopper 108a is located on the cross bar 1012, and when the second driving element 104b drives the second stopper 108b to the other cross bar 1012, the bottom surface of the second stopper 108b is located on the cross bar 1012, and by configuring the first stopper 108a and the second stopper 108b as rectangular structures and respectively configuring the bottom surfaces of the two stoppers on the two cross bars 1012, the contact areas between the first stopper 108a and the two stoppers 108b and the two cross bars 1012 can be increased, so that the cross bar 1012 can more stably support the first stopper 108a and the second stopper 108 b.

In this embodiment, the bottom surface of the first stopper 108a is located on the first transverse bar 105a, and the bottom surface of the second stopper 108b is located on the second transverse bar 105b, so that when the first and second transverse bars 105a and 105b are flush with the corresponding transverse bars 1012, the first stopper 108a may contact the first and second transverse bars 105a and 1012, respectively, and the second stopper 108b may contact the second and second transverse bars 105b and 1012, respectively.

In this embodiment, the first driver 104a, the second driver 104b, the third driver 107a, and the fourth driver 107b are hydraulic rods. It will be appreciated that the entire lift mechanism is within the absorber tower, which has a highly corrosive environment within it, so that the hydraulic ram can be more easily provided with a corrosion-resistant coating than a motor, gear mechanism.

As shown in fig. 9, the two guide bodies may be further divided into a first guide body 102a and a second guide body 102b, the first guide body 102a and the second guide body 102b are rectangular parallelepiped structures, the first guide body 102a and the second guide body 102b are respectively provided with a guide groove 1021a extending along the longitudinal direction, and the connecting shafts 112 correspondingly penetrate through the guide grooves 1021a one to one.

As shown in fig. 1, 2 and 3, in the present embodiment, the number of the spray pipe layers 410 includes at least three layers, the number of the work platforms 300 includes at least three layers, the work platforms 300 and the spray pipe layers 410 are spaced apart in a one-to-one correspondence in the up-and-down direction, and every two adjacent work platforms 300 are connected together by a plurality of lift rod assemblies. Therefore, when the lowest working platform is jacked by the lower lifting mechanism, at least three working platforms 300 can be jacked upwards at the same time, so that an operator can clean different working platforms 300 at the same time.

As shown in fig. 2, in this embodiment, a supporting roller 310 is further sleeved at the circumferential edge of the work platform 300, the supporting roller 310 can rotate relative to the circumferential edge of the work platform 300, that is, when the lifting mechanism drives the work platform 300 to move on the inner wall of the absorption tower 400, the supporting roller 310 can roll on the inner wall of the absorption tower 400, the number of the supporting rollers 310 can be set to be at least three, and the three supporting rollers 310 are uniformly distributed in the circumferential direction of the work platform 300, the arrangement of the supporting rollers 310 can enable the work platform 300 to be abutted against the inner wall of the absorption tower 400, thereby facilitating to enable the work platform 300 to be more stably and reliably supported on the inner wall of the absorption tower 400.

As shown in fig. 3 and 4, in this embodiment, each of the lift lever assemblies includes a first lift lever 321, a second lift lever 322, a first clamping member 323, and a second clamping member 324, a lower end of the first lift lever 321 is fixed on the lower work platform 300, an upper end of the first lift lever 321 is connected to a lower end of the second lift lever 322, an upper end of the second lift lever 322 is fixed on the upper work platform 300, and the first clamping member 323 and the second clamping member 324 are detachably abutted at a connection position of the first lift lever 321 and the second lift lever 322. It should be noted that, at ordinary times, the upper work platform 300 may be directly placed on the spray pipe layer 410, and when the upper spray pipe layer 410 needs to be cleaned, the upper work platform 300 and the lower work platform 300 are fixed by the lifting assembly, so that the lifting mechanism can lift up the plurality of work platforms 300 at the same time.

The lower end of the first lifting rod 321 may be fixedly connected to the lower work platform 300, and the upper end of the second lifting rod 322 may be fixedly connected to the upper work platform 300.

As shown in fig. 4 and 5, the cross sections of the first clamping member 323 and the second clamping member 324 are semicircular, a plurality of clamping grooves 3232 are disposed on one side of the first clamping member 323 facing the second clamping member 324, and L-shaped clamping portions 3242 corresponding to the clamping grooves 3232 one to one are disposed on one side of the second clamping member 324 facing the first clamping member 323, wherein an opening of the clamping groove 3232 can extend upward, and the L-shaped clamping portions 3242 can extend downward, so that when the first clamping member 323 and the second clamping member 324 are butted, the clamping portions 3242 of the second clamping member 324 can be clamped in the clamping grooves 3232, thereby hooping the first lifting rod 321 and the second lifting rod 322. It is ensured that the upper working platform 300 can be stably supported by the lower working platform 300.

In some embodiments, the card slot 3232 may also be disposed at a side of the second card member 324 facing the first card member 323, and correspondingly, the card portion 3242 may also be disposed at a side of the first card member 323 facing the second card member 324.

As shown in fig. 4 and 5, further, slots are disposed on the peripheries of the first lifting rod 321 and/or the second lifting rod 322, the slot on the first lifting rod 321 is a first slot 3221, the slot on the second lifting rod 322 is a second slot 3222, clamping blocks corresponding to the clamping groove 3232 are disposed on the first clamping member 323 and the second clamping member 324, the clamping block on the first clamping member 323 is a first clamping block 3231, and the clamping block on the second clamping member 324 is a second clamping block 3241, or

The periphery of first lifter 321 and/or second lifter 322 is provided with the fixture block, is provided with draw-in groove 3232 corresponding with draw-in groove 3232 on first joint spare 323 and the second joint spare 324, through setting up fixture block and draw-in groove 3232 joint together, can be so that first lifter 321 and second lifter 322 along the axial or radial rotation that appears to ensure the stability of lifter subassembly, guarantee the stability of upper and lower layer work platform 300.

It should be noted that the shape of the slot 3232 and the latch may be a prism.

As shown in fig. 11 to 14, the absorption tower working platform lifting device further includes a hydraulic rod adjusting device, and the hydraulic rod adjusting device includes a mounting plate 200, a first motor 210, a first valve body 230, two first valve spools 240, a first pipe 220a, and a second pipe 220 b. Wherein the hydraulic rod adjusting device can be arranged at a suitable position, for example, the hydraulic rod adjusting device can be arranged at the middle upper part of the absorption tower 400, and also can be arranged at the bottom of the absorption tower 400.

Wherein the first valve body 230 is mounted on the mounting plate 200, the two first valve spools 240 are coaxially and alternately arranged in the first valve body 230 and are driven by the first motor 210 to rotate synchronously, it should be noted that, here, the two first valve spools 240 are independent from each other, the two first valve spools 240 extend along the longitudinal direction, the first valve body 230 is further provided with a first pipeline 221, a second pipeline 222, a third pipeline 223 and a fourth pipeline 224, the two first valve spools 240 are respectively provided with oil guide holes 241 corresponding to the height direction of the first valve body 230, wherein, here, the oil guide holes 241 are communicated with an external oil tank, for example, hydraulic oil can be pumped into the two first valve spools 240 through the oil guide holes 241 by a pumping device, the first valve body 230 is provided with a first oil inlet 250 and a second oil inlet corresponding to the two first valve spools 240 and communicated with the oil guide holes 241, the first oil inlet 250 is located above the second oil inlet, that is, the first oil inlet 250 is communicated with one of the first valve cores 240, and the second oil inlet is communicated with the other first valve core 240, it should be noted that, the first oil inlet 250 is not only used as an inlet of hydraulic oil, and the first oil inlet 250 can also be used as an outlet of hydraulic oil in different working periods, that is, hydraulic oil can enter the first valve core 240 from the first oil inlet 250 and can also be discharged from the first valve core 240 through the first oil inlet 250, and similarly, the second oil inlet can also be used as a passage for hydraulic oil to enter and exit, a first end of the first pipeline 221 and a first end of the third pipeline 223 are opposite and selectively communicated with the oil guide hole 241 of one first valve core 240, a first end of the second pipeline 222 and a first end of the fourth pipeline 224 are opposite and selectively communicated with the oil guide hole 241 of the other first valve core 240, a second end of the second pipeline 222 is connected to the first pipeline 221, a second end of the fourth pipe 224 is connected to the third pipe 223, the first pipe 221 and the second pipe 222 are connected to the first pipe 220a, and the third pipe 223 and the fourth pipe 224 are connected to the second pipe 220 b.

In actual operation, the first pipeline 220a may be used to simultaneously communicate with the first oil port of the first driving member 104a and the second oil port of the second driving member 104b, and the second pipeline 220b may be used to simultaneously communicate with the third oil port of the first driving member 104a and the fourth oil port of the second driving member 104 b. It should be noted that the first oil port can be used as an oil inlet through which the first driving member 104a extends, and when the first oil port takes oil, the third oil port takes oil out; the second oil port may serve as an oil inlet for retracting the second driving member 104b, and when the second oil port takes oil, the fourth oil port takes oil out. That is, the first pipe 220a can simultaneously supply hydraulic oil to the first driving member 104a and the second driving member 104b, when the first driving member 104a extends, the second driving member 104b retracts, while the second pipe 220b can simultaneously supply hydraulic oil to the second hydraulic rod and the first driving member 104a, when the first driving member 104a retracts, the second driving member 104b extends. On the first driving piece 104a, the first oil port is located below the third oil port, and on the second driving piece 104b, the fourth oil port is located below the second oil port.

As shown in fig. 10, the first pipe 220a may be connected to a first joint 291, the second pipe 220b may be connected to a second joint 292, the first joint 291 is connected to the first oil port and the second oil port, respectively, and the second joint 292 is connected to the third oil port and the fourth oil port, respectively.

When the first motor 210 rotates the two first valve spools 240, and the oil guide hole 241 on the upper first valve spool 240 is communicated with the first pipeline 221, and the oil guide hole 241 on the lower first valve spool 240 is communicated with the fourth pipeline 224, at this time, hydraulic oil enters the upper first valve spool 240 through the first oil inlet 250, and enters the first oil port of the first driving member 104a and the second oil port of the second driving member 104b through the first pipeline 221 and the first pipeline 220a, wherein the first oil port of the first driving member 104a is fed with oil to extend the first driving member 104a, and the second oil port of the second driving member 104b is fed with oil to retract the second driving member 104b, so that the first motor 210 can control the two hydraulic rods to act alternately at the same time, and in the same way, when the first motor 210 rotates to communicate the oil guide hole 241 on the upper first valve spool 240 with the third pipeline 223, and the oil guide hole 241 on the lower first valve spool 240 is communicated with the second pipeline 222, at this time, hydraulic oil enters the first valve core 240 below through the second oil inlet, and enters the third oil port of the first driving member 104a and the fourth oil port of the second driving member 104b through the third pipeline 223 and the second pipeline 220b, wherein the first driving member 104a retracts due to the third oil port of the first driving member 104a, and the second driving member 104b extends due to the fourth oil port of the second driving member 104b, so that the first motor 210 rotates to different positions of the first valve core 240 and the second valve core 271, the first driving member 104a and the second driving member 104b can alternately move at the same time, and the use cost can be greatly reduced by using one set of control device.

As shown in fig. 11 to 14, further, the first motor 210 is connected to the two first valve spools 240 through a connecting shaft, respectively, and oil guide holes 241 extend through the connecting shaft to communicate with the first oil inlet 250 and the second oil inlet, whereby, when the first motor 210 rotates the two first valve spools 240, hydraulic oil of the first oil inlet 250 may directly enter the first pipeline 221 and the fourth pipeline 224, or the second pipeline 222 and the third pipeline 223 through the oil guide holes 241.

In the present embodiment, the first motor 210 may employ a stepping motor.

As shown in fig. 11, further, a first valve 231 may be provided on the first and second pipes 220a and 220b to control opening and closing of the first and second pipes 220a and 220 b.

As shown in fig. 11 to 14, further, the hydraulic rod adjusting apparatus further includes a second motor 260, a cam including a first cam 261 and a second cam 262 positioned under the first cam 261, an adjusting mechanism including a second valve body 270, a second valve spool 271 and a spring 290, a first pipe 281, a second pipe 282, a third pipe 283, a fourth pipe 284 and a fifth pipe 285, wherein the second valve body 270 is disposed on the mounting plate 200, and the second valve body 270 extends horizontally, the cam is respectively connected with the output end of the second motor 260 and the second valve spool 271 to drive the second valve spool 271 to move in the second valve body 270, the spring 290 is disposed in the second valve body 270 to provide a restoring force when the second valve spool 271 moves in a direction away from the output end of the second motor 260, a first groove 2711 and a second groove 2713 are formed in the second valve spool 271, and a connecting pipe 2712 is further disposed on the second valve spool 271, the first groove 2711 is located between the second groove 2713 and the spring 290, the first tube 281 and the second tube 282 are disposed at one side on the second valve body 270, the third tube 283, the fourth tube 284 and the fifth tube 285 are disposed at the other side of the second valve body 270, the hydraulic rod adjusting apparatus has a first position in which the spring 290 is in an initial state and the first tube 281 is in communication with the third tube 283 through the first groove 2711, and the second tube 282 is in communication with the fourth tube 284 through the connecting tube 2712, and a second position in which the first tube 281 is in communication with the third tube 283 through the connecting tube 2712, the second tube 282 is in communication with the fifth tube 285 through the second groove 2713, and the first tube 281 and the second tube 282 are in communication with two oil ports of the third driving member 107a, respectively.

It can be understood that, in the first position, the spring 290 is reset to push the second spool 271 to a direction close to the second motor 260, and at this time, the fourth pipe 284 is communicated with an external oil tank and can pump hydraulic oil into the second spool 271 under the pumping action of the pumping device, and the hydraulic oil is input to one end of one hydraulic rod through the fourth pipe 284, the connecting pipe 2712 and the second pipe 282, i.e., the fourth pipe 284, the connecting pipe 2712 and the second pipe 282 can constitute an oil inlet passage, and the first pipe 281, the first groove 2711 and the third pipe 283 constitute an oil return passage, so that the hydraulic rod can perform oil extraction at the same time when oil is input, thereby extending or retracting the hydraulic rod. When the second motor 260 rotates the cam, so that the first cam pushes the second valve spool 271 to compress the spring 290, that is, the second valve spool 271 moves to the right, at this time, the first groove 2711 is misaligned with the third tube 283 and the first tube 281, the connection tube 2712 is respectively communicated with the first tube 281 and the third tube 283, and the second groove 2713 is respectively communicated with the second tube 282 and the fifth tube 285, at this time, the third tube 283, the connection tube 2712 and the first tube 281 may constitute an oil inlet passage, and the second tube 282, the second groove 2713 and the fifth tube 285 may constitute an oil return passage. Thus, the first and second pipes 281 and 282 can be supplied with both oil and oil, thereby realizing extension and retraction control of one hydraulic rod.

Further, the number of the cams and the adjusting mechanisms is two, the two cams are symmetrically arranged in the vertical direction and are driven to rotate by the second motor 260, the two adjusting mechanisms are correspondingly arranged in the vertical direction, and the first pipe 281 and the second pipe 282 in the lower layer are respectively communicated with the two oil ports of the fourth driving part 107b, so that the third driving part 107a and the fourth driving part 107b can be controlled by the two cams and the two adjusting mechanisms.

In this embodiment, the two cams are symmetrically disposed with respect to the axis of the output end of the second motor 260, and the two cams are symmetrically disposed, so that when the upper cam pushes the upper second spool 271 to the right, the lower cam does not push the lower second spool 271, that is, the two cams can make the hydraulic rods corresponding to the upper second spool 271 and the hydraulic rods corresponding to the lower second spool 271 work alternately, for example, when the hydraulic rods corresponding to the upper first tube 281 and the second tube 282 are extended, the hydraulic rods corresponding to the lower first tube 281 and the second tube 282 are retracted, and vice versa.

Further, a groove is formed in the second valve body 270, the spring 290 is telescopically arranged in the groove, and the groove for accommodating the spring 290 is formed, so that the height of the second valve body 270 is reduced, and meanwhile, the telescopic direction of the spring 290 is limited.

As shown in fig. 12, further, second valves 286 are provided on the first pipe 281 and the second pipe 282, respectively, to control opening or closing of the first pipe 281 and the second pipe 282.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An absorption tower operation platform lifting device is used for an absorption tower, at least two layers of spraying pipe layers which are spaced apart from each other along the vertical direction are arranged in the absorption tower, and the absorption tower operation platform lifting device is characterized by comprising at least two lifting mechanisms and at least one operation platform, each lifting mechanism comprises a support frame, a fixed plate, a first driving piece, a second driving piece, two guide bodies and a connecting rod mechanism used for supporting the operation platform, the support frame extends along the longitudinal direction and is fixed on the inner wall of the absorption tower, the fixed plate extends along the transverse direction and is fixedly connected to the support frame, the first driving piece and the second driving piece are respectively fixed on the lower surface of the fixed plate and penetrate upwards through the fixed plate, the two guide bodies are oppositely arranged on the upper surface of the fixed plate, one end of the connecting rod mechanism is slidably arranged on one guide body and is driven by the first driving piece to lift, the other end of the link mechanism is slidably arranged on the other guide body and driven to lift by the second driving piece, the first driving piece extends, meanwhile, the second driving piece retracts, and at least part of the link mechanism is lifted.

2. The absorption tower operation platform lifting device according to claim 1, wherein the link mechanism comprises a first transverse rod, a second transverse rod, a rotating rod, a third rod, a fourth rod and two connecting shafts, the first transverse rod is connected to the output end of the first driving member and is perpendicular to the supporting frame, the second transverse rod is connected to the output end of the second driving member and is perpendicular to the supporting frame, the first transverse rod and the second transverse rod are parallel, the rotating rod comprises a first rod and a second rod in an L shape, the first rod is obliquely arranged, one end of the second rod far away from the first rod is slidably connected with one end of the second transverse rod far away from the supporting frame, one of the connecting shafts sequentially passes through one of the guide bodies, the lower end of the first rod, the first transverse rod and the lower end of the third rod, the one end of second pole with first pole is connected and the perpendicular to first pole, the other end of second pole with second transverse bar slidable ground is connected, fourth rod slope downwardly extending, another the connecting axle passes in proper order the upper end of fourth rod, the second transverse bar is close to the one end and another of support frame the guide body, the third pole is kept away from the one end of support frame with the middle part of fourth rod is articulated, first transverse bar is kept away from the one end slidable ground of support frame with the fourth rod is kept away from the one end of support frame is connected.

3. The absorption tower operation platform lifting device according to claim 2, wherein the support frame comprises two vertical rods extending longitudinally and a plurality of cross rods connected between the two vertical rods, the cross rods are arranged at intervals, the lifting mechanism further comprises a third driving member, a fourth driving member, a first fixing seat, a second fixing seat, a first limiting block and a second limiting block, the first fixing seat and the third driving member are installed on the first cross rod, the second fixing seat and the fourth driving member are installed on the second cross rod, the first limiting block is arranged in the first fixing seat in a penetrating manner and driven by the third driving member to stretch, and the second limiting block is arranged in the second fixing seat in a penetrating manner and driven by the fourth driving member to stretch.

4. The absorption tower operation platform lifting device according to claim 1, wherein the number of the spray pipe layers comprises at least three layers, the number of the operation platforms comprises at least three layers, the operation platforms and the spray pipe layers are spaced in a one-to-one correspondence manner in the vertical direction, and every two adjacent operation platforms are connected together through a plurality of lifting rod assemblies.

5. The absorption tower operation platform lifting device according to claim 4, wherein each lifting rod assembly comprises a first lifting rod, a second lifting rod, a first clamping member and a second clamping member, the lower end of the first lifting rod is fixed on the operation platform at the lower layer, the upper end of the first lifting rod is connected with the lower end of the second lifting rod, the upper end of the second lifting rod is fixed on the operation platform at the upper layer, and the first clamping member and the second clamping member are detachably butted at the joint of the first lifting rod and the second lifting rod.

6. The absorption tower operation platform lifting device according to claim 5, wherein the cross sections of the first clamping member and the second clamping member are semicircular, a plurality of clamping grooves are formed in one side, facing the second clamping member, of the first clamping member, and L-shaped clamping portions corresponding to the clamping grooves in a one-to-one mode are formed in one side, facing the first clamping member, of the second clamping member.

7. The absorption tower operation platform lifting device according to claim 6, wherein the first lifting rod and/or the second lifting rod are provided with slots at the periphery, and the first clamping member and the second clamping member are provided with clamping blocks corresponding to the slots, or

The periphery of the first lifting rod and/or the second lifting rod is provided with a clamping block, and the first clamping piece and the second clamping piece are provided with clamping grooves corresponding to the clamping block.

8. The absorption tower operation platform lifting device according to claim 3, wherein the first driving member, the second driving member, the third driving member and the fourth driving member are hydraulic rods, the absorption tower operation platform lifting device further comprises a hydraulic rod adjusting device, the hydraulic rod adjusting device comprises a first motor, a first valve body, two first valve spools, a first pipeline and a second pipeline, the two first valve spools are coaxially and alternately arranged in the first valve body and driven by the first motor to synchronously rotate, the first valve body is further provided with a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, the two first valve spools are respectively provided with oil guide holes corresponding to the first valve body in the height direction, the first valve body is provided with a first oil inlet and a second oil inlet which correspond to the two first valve spools and are communicated with the oil guide holes, the first end of the first pipeline and the first end of the third pipeline are opposite and can be selectively communicated with the oil guide hole of one first valve core, the first end of the second pipeline and the first end of the fourth pipeline are opposite and can be selectively communicated with the oil guide hole of the other first valve core, the second end of the second pipeline is connected to the first pipeline in a bypassing manner, the second end of the fourth pipeline is connected to the third pipeline in a bypassing manner, the first pipeline and the second pipeline are commonly communicated with the first pipeline, the third pipeline and the fourth pipeline are respectively communicated with the second pipeline, the first pipeline is respectively communicated with the first oil port of the first driving piece and the second oil port of the second driving piece, the second pipeline is respectively communicated with the third oil port of the second driving piece and the fourth oil port of the second driving piece, and the first oil port is positioned below the third oil port, the fourth oil port is positioned below the second oil port.

9. The absorption tower working platform lifting device according to claim 8, wherein the hydraulic rod adjusting device further comprises a second motor, a cam, an adjusting mechanism, a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe, the adjusting mechanism comprises a second valve body, a second valve core and a spring, the cam is respectively connected with an output end of the second motor and the second valve core to drive the second valve core to move in the second valve body, the second valve body is internally provided with the spring to provide a restoring force when the second valve core moves in a direction away from the output end of the second driving member, the second valve core is provided with a first groove and a second groove and is further provided with a connecting pipe, the first groove is located between the second groove and the spring, and the first pipe and the second pipe are arranged on one side of the second valve body, the third pipe, the fourth pipe and the fifth pipe are arranged on the other side of the second valve body, the hydraulic rod adjusting device is provided with a first position where the spring is in an initial state and a second position where the spring is in a compressed state, in the first position, the first pipe is communicated with the third pipe through the first groove, the second pipe is communicated with the fourth pipe through the connecting pipe, in the second position, the first pipe is communicated with the third pipe through the connecting pipe, the second pipe is communicated with the fifth pipe through the second groove, and the first pipe and the second pipe are respectively communicated with two oil ports of the third driving piece.

10. The absorption tower operation platform lifting device according to claim 9, wherein the number of the cams and the adjusting mechanisms is two, the two cams are correspondingly arranged in the vertical direction and are driven by the second driving member to rotate, the two adjusting mechanisms are correspondingly arranged in the vertical direction, and the first pipe and the second pipe in the lower layer are respectively communicated with the two oil ports of the fourth driving member.

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