CN114368715A - Well lid hoisting accessory for municipal construction - Google Patents

Abstract

The utility model relates to a well lid hoisting device for municipal construction, which relates to the field of hoisting devices and comprises more than four supporting blocks, supporting rods, a hoisting rod and a hoisting component, wherein the number of the supporting rods is even, a plurality of supporting rods are arranged around the supporting blocks, every two supporting rods are arranged just right, one end of each supporting rod is hinged with the supporting block, the other end of each supporting rod is fixedly connected with a universal wheel, the hoisting component comprises a connecting block, a driving part and a plurality of first hoisting parts, the first hoisting parts are in one-to-one correspondence with the supporting rods, each first hoisting part comprises a bidirectional screw rod and a hoisting nut, the hoisting nuts are rotationally arranged on the supporting rods, bidirectional screw threads are arranged on the hoisting nuts, one end far away from the hoisting nuts is rotationally connected on the connecting block, the driving part is used for driving the bidirectional screw rods to rotate, and the hoisting rod is slidably arranged on the connecting block, and is fixedly connected with the supporting block, and the lifting rod is used for connecting the well cover. This application has the effect of being convenient for shift out well lid from the well head.

Description

Well lid hoisting accessory for municipal construction

Technical Field

The application relates to hoisting apparatus's field especially relates to a well lid hoisting apparatus for municipal construction.

Background

In municipal construction, in order to make things convenient for laying and maintaining of underground pipeline or power supply line, can set up the cellar for storing things well with the underground passage intercommunication usually to establish the well lid at the cellar for storing things well upper cover.

When needs maintain underground pipeline or circuit, need lift the well lid, general construction mode is that constructor inserts the hoisting of well lid with the crowbar downthehole, then shifts out the well lid well head simultaneously through lever principle with the well lid perk.

Because the process of artifical perk well lid is comparatively consuming time hard, be not convenient for shift out the well lid from the well head.

Disclosure of Invention

In order to facilitate shifting out the well lid from the well head, this application provides a well lid hoisting accessory for municipal construction.

The application provides a pair of well lid hoisting accessory for municipal construction adopts following technical scheme:

a well lid hoisting device for municipal construction comprises support blocks, support rods, hoisting rods and hoisting assemblies, wherein the number of the support rods is more than four, the number of the support rods is even, a plurality of support rods are arranged around the support blocks, every two support rods are arranged just opposite to each other, one end of each support rod is hinged to the support blocks, the other end of each support rod is fixedly connected with a universal wheel, each hoisting assembly comprises a connecting block, a driving part and a plurality of first hoisting parts, the first hoisting parts are in one-to-one correspondence with the support rods, each first hoisting part comprises a bidirectional screw and a hoisting nut, the hoisting nuts are rotatably arranged on the support rods, the bidirectional screw threads are arranged on the hoisting nuts, one ends far away from the hoisting nuts are rotatably connected onto the connecting blocks, the driving parts are arranged on the connecting blocks and are used for driving the bidirectional screws to rotate, the hoisting rods are slidably arranged on the connecting blocks, one end of each hoisting rod is fixedly connected with the support blocks, the other end is connected with two lifting chains, the lifting chains are fixedly connected with lifting hooks, and the lifting hooks are used for hooking the lifting holes of the well cover.

Through adopting above-mentioned technical scheme, place a plurality of bracing piece in well head department, make the supporting shoe just to the well head, rotate through the two-way screw rod of drive division drive a plurality of, two-way screw rod makes the angle of every pair bracing piece open to the biggest through lifting by crane the nut, establish two lifting hooks on two lifting eyes of well lid respectively again, then rotate through the two-way screw rod of drive division drive a plurality of, two-way screw rod makes every pair bracing piece shrink through lifting by crane the nut, and then make the supporting shoe shift up, the supporting shoe drives the jib and shifts up, it shifts up through lifting by crane chain drive well lid, until the well lid leaves the well head, thereby be convenient for constructor shifts out the well lid from well head department, reverse operation is also convenient for lay well head department again simultaneously, manpower consumption is reduced, and construction efficiency is improved.

Optionally, the driving part comprises a driving bevel gear and a lifting bevel gear, the lifting bevel gear is provided with a plurality of parts which are in one-to-one correspondence with the two-way screw rods, the lifting bevel gear is coaxially and fixedly arranged at one end, close to the connecting block, of the two-way screw rod, the driving bevel gear is rotatably arranged on the connecting block, the driving bevel gear is meshed with the lifting bevel gear of the plurality of parts, and the lifting rod is arranged on the driving bevel gear in a sliding and penetrating mode.

Through adopting above-mentioned technical scheme, drive bevel gear and drive a plurality of simultaneously and lift by crane bevel gear, lift by crane bevel gear and rotate and drive two-way screw rod and rotate to make every can carry out synchronous rotation to two-way screw rod, make every can synchronous shrink to the bracing piece homoenergetic, make a plurality of bracing piece easily make the well lid be in stable support state at the shrink in-process.

Optionally, be provided with ratchet and handle on the drive bevel gear, the ratchet sets up with the coaxial fixed of drive bevel gear, and the one end of handle is the ring form, and rotates the cover and establish on the ratchet, and the handle rotates with drive bevel gear to be connected, is provided with the pawl between the ring end of handle and the ratchet, and the pawl joint is in the teeth of a cogwheel of ratchet, and the one end of keeping away from the ratchet rotates with the handle to be connected, and one side fixedly connected with spring that the ratchet was kept away from to the pawl, the one end and the handle fixed connection of pawl are kept away from to the spring, and the jib that plays also slides and wears to establish on the ratchet.

By adopting the technical scheme, the handle is broken off, the pawl is clamped in the gear teeth of the ratchet wheel to drive the ratchet wheel to rotate, the ratchet wheel drives the drive bevel gear to rotate, when the handle is blocked by one of the support rods, the handle is broken off in the opposite direction, the pawl slides over the tooth back of the ratchet wheel, and the handle is broken off in the forward direction, so that the drive bevel gear can continuously rotate; meanwhile, the hoisting nut is driven by the bidirectional screw rod, so that each pair of support rods can be driven to contract and expand by driving the bevel gear to rotate along one direction.

Optionally, the lifting rod is hollow, two symmetrically arranged lifting grooves are formed in the side wall, the two lifting grooves respectively correspond to one pair of oppositely arranged support rods, a lifting rope penetrates through the bottom end of the lifting rod in a sliding manner, one end of the lifting rope, which is positioned outside the lifting rod, is fixedly connected with both lifting chains, a second lifting part is arranged on each support rod and comprises a support plate and a clamping rod, the clamping rod is positioned inside the lifting rod and is fixedly connected with the lifting rope, two limit blocks are symmetrically and fixedly arranged on the side wall of the lifting rod, the two limit blocks are positioned within the length range of the lifting grooves, one side, which is close to each other, of each limit block is flush with the side wall of the lifting groove, the two ends of each clamping rod are respectively clamped on the two limit blocks, the two support plates are symmetrically and fixedly arranged on the two support rods corresponding to the two lifting grooves, and one end, which is far away from the support plates, is inserted into the lifting grooves, and is positioned on one side of the clamping rod away from the supporting block.

Through adopting above-mentioned technical scheme, after the backup pad inserts the groove of lifting by crane, along with the shrink of bracing piece, the backup pad progressively inserts and lifts by crane the inslot to rotate along with the bracing piece, the backup pad promotes the kelly and shifts up, and then makes the lifting rope further shift up under the combined action of backup pad, kelly, makes the well lid realize that the two-stage lifts by crane through bracing piece, backup pad, has further improved the efficiency of lifting by crane of well lid.

Optionally, one side of the support plate close to the support block is arranged in an inclined manner towards the direction close to the lifting rod along the direction away from the support block.

Through adopting above-mentioned technical scheme, because the backup pad is close to the lopsidedness setting of supporting shoe, through inclined plane lifting kelly, improved the efficiency that lifts up of kelly, further improved the efficiency of lifting by crane of well lid.

Optionally, it prevents weighing down the subassembly to be provided with on the jib to play, prevents weighing down the subassembly and includes card and torsional spring, has seted up the groove of stepping down on the jib lateral wall, and the card is located the inslot of stepping down, and the one end that is close to the supporting shoe is articulated with the jib of playing, and the card lies in the outer one side of jib of playing and inclines along the direction orientation of keeping away from the supporting shoe, and the torsional spring is located the inclined plane of card and steps down between the lateral wall that the groove is close to the supporting shoe, and one end and play jib fixed connection, the other end and card inclined plane fixed connection.

Through adopting above-mentioned technical scheme, when playing the jib and shifting up, the connecting block can compress the jib with playing articulated card on the jib in, behind connecting block, drive bevel gear, the ratchet when the card, can pop out the jib by the auto-eject under the effect of torsional spring, when playing jib and supporting shoe and breaking, play the jib and fall, the card that plays on the jib can the joint on the ratchet to make jib and well lid be difficult for taking place to fall, improved hoisting accessory's security performance.

Optionally, the anti-falling assembly is provided with a plurality of groups along the axis direction of the lifting rod.

Through adopting above-mentioned technical scheme, prevent weighing down the subassembly through setting up the multiunit, when playing jib and supporting shoe fracture, play the card on the jib and can in time prevent weighing down, reduced the distance that drops of jib, increased the security of using.

Optionally, a plurality of balance rods are fixedly arranged at the connection position of the lifting rope and the lifting chain, the balance rods are arranged around the circumferential direction of the lifting rope, and the balance rods incline towards the direction far away from the lifting rope along the direction far away from the supporting block.

Through adopting above-mentioned technical scheme, through setting up the balancing pole that a plurality of slope set up for the well lid is difficult for taking place the slope phenomenon of turning on one's side at the in-process that lifts by crane, makes the well lid easily maintain the state that the stable level lifted by crane.

Optionally, one end of one of the hoisting chains close to the lifting hook is fixedly connected with a safety chain, the other end of the safety chain is fixedly connected with a spring hook, and the spring hook is arranged at one end of the other hoisting chain close to the lifting hook.

Through adopting above-mentioned technical scheme, through the safety chain with two one ends that lift chain is close to the lifting hook be connected for two lifting hooks are difficult for deviating from the lifting eye of well lid.

Optionally, an anti-falling chain is fixedly connected between the supporting block and the lifting rod.

By adopting the technical scheme, the anti-falling chain is arranged between the supporting block and the lifting rod, so that the anti-falling performance of the lifting device is further improved, and the lifting device is safer in the use process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the hoisting nuts are driven by the two-way screws to contract the plurality of support rods, and the support rods contract to move the support blocks upwards, so that the hoisting rods fixedly connected to the support blocks hoist the well lid, and the well lid is moved out of a wellhead, thus being trouble-saving and labor-saving;

2. the driving bevel gear is driven to rotate by the ratchet wheel and the pawl, the lifting bevel gear is driven to rotate by the driving bevel gear, and the lifting bevel gear drives the bidirectional screw rod to rotate, so that the bidirectional screw rod is convenient to rotate;

3. through setting up the subassembly of preventing weighing down, when playing jib and supporting shoe and taking place the fracture, prevent weighing down the subassembly and can make the difficult emergence of well lid drop, improved hoisting accessory's security performance.

Drawings

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

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an exploded view intended to illustrate the fall arrest assembly;

fig. 4 is a sectional view intended to illustrate a second lifting portion;

FIG. 5 is a schematic diagram intended to illustrate the connection of the hoist chain to the safety chain;

fig. 6 is an enlarged view at B in fig. 3.

Description of reference numerals:

1. a support block; 11. an anti-falling chain; 2. a support bar; 21. a universal wheel; 22. mounting grooves; 3. lifting the suspender; 31. hoisting a groove; 32. a limiting block; 33. a yielding groove; 34. lifting a lifting rope; 341. a balancing pole; 342. lifting the hoist chain; 3421. a hook; 3422. a safety chain; 3423. a spring hook; 4. a hoisting assembly; 41. connecting blocks; 42. a first hoisting part; 421. a bidirectional screw; 422. lifting the nut; 43. a second lifting part; 431. a support plate; 432. a clamping rod; 44. a drive section; 441. a drive bevel gear; 442. hoisting the bevel gear; 443. a handle; 4431. a ratchet wheel; 4432. a pawl; 4433. a spring; 5. a fall arrest assembly; 51. a card; 52. a torsion spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses well lid hoisting accessory for municipal construction. Referring to fig. 1, a well lid hoisting accessory for municipal construction includes supporting shoe 1, bracing piece 2, plays jib 3 and lifts by crane subassembly 4, and bracing piece 2 is provided with a plurality of, and all articulates with supporting shoe 1, plays jib 3 and supporting shoe 1 fixed connection, and is used for connecting the well lid, lifts by crane subassembly 4 and sets up on bracing piece 2, and is used for driving bracing piece 2 to make and plays jib 3 and drive the well lid and shift up.

During the use, place well head department through bracing piece 2 with supporting shoe 1, then will play jib 3 and be connected with the well lid, through lifting by crane 4 shrink a plurality of bracing pieces 2 of subassembly, bracing piece 2 makes supporting shoe 1 move up, and supporting shoe 1 drives jib 3 and moves up, and it drives the well lid and shifts up to play jib 3 for the well lid lift by crane labour saving and time saving, thereby be convenient for shift out the well lid from the well head.

Referring to fig. 1, the supporting block 1 is rectangular and horizontally arranged, four supporting rods 2 are arranged, the four supporting rods 2 are respectively located on four side walls of the supporting block 1, every two supporting rods 2 are arranged right opposite to each other, the supporting rods 2 are rectangular and rod-shaped, one end of each supporting rod is hinged to the side wall of the supporting block 1, and the four supporting rods 2 face one side of the supporting block 1. One end of the support rod 2 far away from the support block 1 is fixedly provided with a universal wheel 21.

Referring to fig. 1 and 2, the lifting assembly 4 includes a connection block 41, a first lifting portion 42, a second lifting portion 43, and a driving portion 44, the connection block 41 is rectangular and located between the four support rods 2, the connection block 41 is horizontally disposed, and four sides of the connection block face the four support rods 2 respectively.

Referring to fig. 1, a rectangular mounting groove 22 is formed in one side of the middle of the support rod 2 close to the other support rod 2 opposite to the support rod, the mounting groove 22 penetrates through the support rod 2, the length direction of the mounting groove 22 is the same as that of the support rod 2, and the two ends of the length direction are arc-shaped.

Referring to fig. 1, the first lifting portions 42 are four and respectively correspond to the four support rods 2 one by one, each first lifting portion 42 includes a bidirectional screw 421 and a lifting nut 422, each lifting nut 422 is rectangular and rotationally arranged in the mounting groove 22, the shapes of the two ends of the lifting nut 422 in the length direction are matched with the shapes of the two ends of the mounting groove 22 in the length direction, and the rotating shafts of the lifting nuts 422 are horizontally arranged.

Referring to fig. 1, one end of the bidirectional screw 421 is threaded through the lifting nut 422, and the axis of the bidirectional screw is in the same horizontal plane with the rotation axis of the lifting nut 422, and the other end of the bidirectional screw 421 is rotatably connected to the side wall of the connecting block 41.

During the use, just to the well lid with supporting shoe 1, through rotating two-way screw 421, make and lift by crane nut 422 and carry out reciprocating motion on two-way screw 421, universal wheel 21 on the bracing piece 2 rolls simultaneously to make every pair of bracing piece 2 homoenergetic open or contract, make supporting shoe 1 can rise or descend.

Referring to fig. 2, the driving part 44 includes four driving bevel gears 441, four lifting bevel gears 442 and a handle 443, the four lifting bevel gears 442 are respectively in one-to-one correspondence with the four bidirectional screws 421, the lifting bevel gears 442 are coaxially and fixedly disposed at one ends of the bidirectional screws 421 close to the connecting block 41, the driving bevel gears 441 are rotatably connected to the top surface of the connecting block 41, and the driving bevel gears 441 are engaged with the four lifting bevel gears 442.

Referring to fig. 2, the handle 443 has a long bar shape and a circular end in the longitudinal direction, and the circular end of the handle 443 is rotatably disposed on the side of the driving bevel gear 441 away from the connecting block 41 and is disposed coaxially with the driving bevel gear 441. A ratchet wheel 4431 is arranged in the circular ring end of the handle 443, and the ratchet wheel 4431 is coaxially and fixedly connected with the driving bevel gear 441.

Referring to fig. 2, a pawl 4432 is arranged between the ratchet 4431 and the ring end of the handle 443, the pawl 4432 is clamped in the gear teeth of the ratchet 4431, one end of the pawl 4432, which is far away from the ratchet 4431, is rotatably connected with the handle 443, a spring 4433 is fixedly connected with one side of the pawl 4432, which is far away from the ratchet 4431, and one end of the spring 4433, which is far away from the pawl 4432, is fixedly connected with the handle 443.

When the support rod 2 is used, the handle 443 is broken off, the ratchet 4431 is driven to rotate by the handle 443 through the pawl 4432, the drive bevel gear 441 is driven by the ratchet 4431 to rotate, the four lifting bevel gears 442 are driven by the drive bevel gear 441 to rotate, the two-way screw 421 is driven by the lifting bevel gears 442 to rotate, and the lifting nut 422 is driven by the two-way screw 421 to move, so that the support rod 2 is opened or contracted; when the handle 443 is blocked by the support rod 2, the handle 443 is reversely pulled by the ratchet 4431 and the pawl 4432, so that a space for the rotation of the handle 443 is reserved between the handle 443 and the support rod 2, and the handle 443 can continuously rotate the driving bevel gear 441 in one direction under the blocking of the support rod 2, thereby facilitating the expansion or contraction of the support rod 2.

Referring to fig. 1 and 3, the lifting rod 3 is a long rod and is hollow inside, the lifting rod 3 vertically penetrates through the connecting block 41 and is connected with the connecting block 41 in a sliding manner, and the top end of the lifting rod 3 is fixedly connected with the bottom surface of the supporting block 1. A plurality of anti-falling chains 11 are fixedly connected between the side wall of the lifting rod 3 and the bottom surface of the supporting plate 431, and the anti-falling chains 11 are arranged along the circumferential direction of the lifting rod 3.

Referring to fig. 1, two lifting grooves 31 are formed in the side wall of the lifting rod 3, the lifting grooves 31 penetrate through the side wall of the lifting rod 3, the two lifting grooves 31 are respectively arranged opposite to a pair of oppositely arranged support rods 2, the lifting grooves 31 are rectangular, and the length direction of the lifting grooves is the same as that of the lifting rod 3.

Referring to fig. 4, the fixed stopper 32 that is provided with two symmetries and sets up on the 3 inside walls of jib plays, stopper 32 is located and lifts by crane groove 31 length range, and with lift by crane and leave the distance between the groove 31 bottom, stopper 32 is close to the shape of 3 inside walls one end of jib and plays the shape looks adaptation of 3 inside walls of jib, and keeps away from the one end of 3 inside walls of jib and the side wall that lifts by crane groove 31 that self is closest to and flushes.

Referring to fig. 4, the second lifting portion 43 includes a support plate 431 and a locking rod 432, the locking rod 432 is rod-shaped and is located inside the lifting rod 3, and both ends of the locking rod 432 are respectively set up on the two limit blocks 32.

Referring to fig. 1 and 4, the two support plates 431 are disposed and are respectively disposed on two support rods 2 opposite to the two lifting grooves 31, the two support plates 431 are disposed in a staggered manner and are disposed on one side where the two support rods 2 are close to each other, each support plate 431 is triangular, one side of each support plate 431 is fixedly connected with the corresponding support rod 2, the vertex angle of each support plate 431 is inserted into the lifting groove 31 and is located below the clamping rod 432, and one side of each support plate 431 close to the corresponding support block 1 is obliquely disposed towards the direction close to the lifting rod 3 along the direction away from the corresponding support block 1.

Referring to fig. 4 and 5, a lifting rope 34 is slidably inserted through the bottom end of the lifting rod 3, one end of the lifting rope 34 located in the lifting rod 3 is fixedly connected with the middle part of the clamping rod 432, the other end of the lifting rope is fixedly connected with two lifting chains 342, and one end of each lifting chain 342 far away from the lifting rope 34 is fixedly connected with a lifting hook 3421.

Referring to fig. 5, one end of one of the lifting chains 342 near the lifting hook 3421 is fixedly connected with a safety chain 3422, one end of the safety chain 3422 near the other lifting chain 342 is fixedly connected with a spring hook 3423, and the spring hook 3423 is hooked at one end of the other lifting chain 342 near the lifting hook 3421.

Referring to fig. 1 and 5, one end of the lifting rope 34 close to the lifting chain 342 is fixedly connected with a plurality of balance bars 341, the balance bars 341 are arranged along the circumferential direction of the lifting rope 34, and the balance bars 341 are inclined towards the direction away from the lifting rope 34 along the direction away from the supporting block 1.

During the use, establish two lifting hooks 3421 with the hook and lift by crane downtheholely at two of well lid, nut 422 is lifted by crane in the drive of two-way screw 421, make bracing piece 2 shrink, until backup pad 431 inserts the kelly 432 below, backup pad 431 rotates along with bracing piece 2, backup pad 431 promotes kelly 432 through the inclined plane of self and shifts up, kelly 432 can drive lifting rope 34 and shift up, the in-process that moves up at supporting shoe 1 drive lifting rod 3, backup pad 431 makes lifting rope 34 shift up through promoting kelly 432, thereby make the well lid realize the two-stage and lift by crane, the lifting speed of well lid has been improved, the engineering time has been reduced.

Referring to fig. 1 and 3, a plurality of rectangular abdicating grooves 33 are formed in the side wall of the lifting rod 3, the abdicating grooves 33 are symmetrically formed in the two sides of the supporting plate 431 along the axial direction of the lifting rod 3, the length direction of the abdicating grooves 33 is the same as that of the lifting rod 3, a plurality of groups of anti-falling assemblies 5 are arranged on the lifting rod 3, and the groups of anti-falling assemblies 5 correspond to the abdicating grooves 33 one to one.

Referring to fig. 3 and 6, the anti-falling assembly 5 comprises a clamping piece 51 and a torsion spring 52, the clamping piece 51 is in a sheet shape and is located in the abdicating groove 33, the clamping piece 51 is vertically arranged, the top end of the clamping piece is hinged to the lifting rod 3, the clamping piece 51 is located in the abdicating groove 33 and is vertically arranged on the side edge, the clamping piece 51 is located outside the lifting rod 3, the clamping piece 51 is inclined towards the direction away from the lifting rod 3 along the direction away from the supporting block 1, and the clamping piece 51 is horizontally arranged on the side away from the supporting block 1.

Referring to fig. 6, the torsion spring 52 is disposed between the inclined surface of the locking piece 51 and the sidewall of the receding groove 33 close to the supporting block 1, one end of the torsion spring 52 is fixedly connected to the locking piece 51, and the other end is fixedly connected to the lifting rod 3.

When the junction of lifting rod 3 and supporting shoe 1 breaks, card 51 drops along with lifting rod 3, and until card 51 joint at ratchet 4431 top surface for lifting rod 3 and well lid easily stop dropping after falling, make the well lid be difficult for causing the injury to constructor at the in-process of lifting by crane, improved hoisting accessory's security.

The utility model provides a well lid hoisting accessory for municipal construction's implementation principle does: when the lifting device is used, the supporting rod 2 is pushed, the supporting rod 2 moves through the universal wheel 21 until the supporting block 1 is right opposite to the well lid, then the two lifting hooks 3421 are hooked in the two lifting holes of the well lid, then the spring hooks 3423 on the safety chain 3422 are hooked on the lifting chain 342, the handle 443 is pulled off, the handle 443 drives the bevel gear 441 to rotate through the ratchet wheel 4431 and the pawl 4432, the bevel gear 441 drives the lifting bevel gear 442 to rotate, the lifting bevel gear 442 drives the bidirectional screw 421 to rotate, so that the supporting rod 2 is contracted, the lifting rod 3 drives the well lid to lift, when the supporting plate 431 is inserted below the clamping rod 432, the supporting plate 431 pushes the clamping rod 432 to move upwards, the well lid is lifted under the two-stage lifting action of the supporting rod 2 and the supporting plate 431, the well lid is convenient to move out of the well lid, the well lid is moved in a time-saving mode, and labor-saving mode, and construction efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a well lid hoisting accessory for municipal construction which characterized in that: comprises supporting blocks (1), supporting rods (2), a lifting rod (3) and a lifting assembly (4), wherein the number of the supporting rods (2) is more than four, the number of the supporting rods is even, a plurality of supporting rods (2) are arranged around the supporting blocks (1), every two supporting rods (2) are arranged just right, one end of each supporting rod (2) is hinged with the supporting block (1), the other end of each supporting rod is fixedly connected with a universal wheel (21), the lifting assembly (4) comprises a connecting block (41), a driving part (44) and a plurality of first lifting parts (42), the first lifting parts (42) correspond to the supporting rods (2) one by one, each first lifting part (42) comprises a bidirectional screw rod (421) and a lifting nut (422), the lifting nut (422) is rotationally arranged on the supporting rods (2), the bidirectional screw rod (421) is threaded on the lifting nut (422), one end far away from the lifting nut (422) is rotationally connected to the connecting block (41), the driving part (44) is arranged on the connecting block (41) and is used for driving a plurality of two-way screw rods (421) to rotate, the lifting rod (3) is arranged on the connecting block (41) in a sliding and penetrating mode, one end of the lifting rod (3) is fixedly connected with the supporting block (1), the other end of the lifting rod is connected with two lifting chains (342), the lifting chains (342) are fixedly connected with lifting hooks (3421), and the lifting hooks (3421) are used for hooking and arranging on lifting holes of the well cover.

2. The well lid hoisting device for municipal construction according to claim 1, wherein: the driving part (44) comprises a driving bevel gear (441) and a lifting bevel gear (442), the lifting bevel gear (442) is provided with a plurality of parts, the lifting bevel gear is in one-to-one correspondence with the two-way screw rods (421), the lifting bevel gear (442) is coaxially and fixedly arranged at one end, close to the connecting block (41), of the two-way screw rods (421), the driving bevel gear (441) is rotatably arranged on the connecting block (41), the driving bevel gear (441) is meshed with the lifting bevel gear (442) in a plurality of parts, and the lifting rod (3) is also arranged on the driving bevel gear (441) in a sliding and penetrating mode.

3. The well lid hoisting device for municipal construction according to claim 2, wherein: the driving bevel gear (441) is provided with a ratchet wheel (4431) and a handle (443), the ratchet wheel (4431) and the driving bevel gear (441) are coaxially and fixedly arranged, one end of the handle (443) is annular and is rotatably sleeved on the ratchet wheel (4431), the handle (443) is rotatably connected with the driving bevel gear (441), a pawl (4432) is arranged between the annular end of the handle (443) and the ratchet wheel (4431), the pawl (4432) is clamped in the gear teeth of the ratchet wheel (4431), one end far away from the ratchet wheel (4431) is rotatably connected with the handle (443), one side of the pawl (4432) far away from the ratchet wheel (4431) is fixedly connected with a spring (4433), one end of the spring (4433) far away from the pawl (4432) is fixedly connected with the handle (443), and the lifting rod (3) is also slidably arranged on the ratchet wheel (4431).

4. The well lid hoisting device for municipal construction according to claim 1, wherein: the lifting rod (3) is hollow, two lifting grooves (31) which are symmetrically arranged are formed in the side wall, the two lifting grooves (31) are respectively in one-to-one correspondence with a pair of support rods (2) which are just opposite to each other, a lifting rope (34) penetrates through the bottom end of the lifting rod (3) in a sliding manner, one end, which is positioned outside the lifting rod (3), of the lifting rope (34) is fixedly connected with two lifting chains (342), a second lifting part (43) is arranged on each support rod (2), each second lifting part (43) comprises a support plate (431) and a clamping rod (432), each clamping rod (432) is positioned inside the lifting rod (3) and is fixedly connected with the lifting rope (34), two limit blocks (32) are symmetrically and fixedly arranged on the side wall of the lifting rod (3), the two limit blocks (32) are positioned within the length range of the lifting grooves (31), and one side which is close to each other is flush with the side wall of the lifting groove (31) which is close to the clamping rod, the two ends of the clamping rod (432) are respectively clamped on the two limiting blocks (32), the two supporting plates (431) are symmetrically and fixedly arranged on the two supporting rods (2) corresponding to the two lifting grooves (31), one end, far away from the supporting rods (2), of each supporting plate (431) is inserted into the lifting groove (31), and is located on one side, far away from the supporting block (1), of the clamping rod (432).

5. The well lid hoisting device for municipal construction according to claim 4, wherein: one side of the supporting plate (431) close to the supporting block (1) is obliquely arranged towards the direction close to the lifting rod (3) along the direction far away from the supporting block (1).

6. The well lid hoisting device for municipal construction according to claim 1, wherein: it prevents weighing down subassembly (5) to be provided with on jib (3) to get up, prevent weighing down subassembly (5) including card (51) and torsional spring (52), the groove of stepping down (33) has been seted up on jib (3) lateral wall to get up, card (51) are located the groove of stepping down (33), and the one end that is close to supporting shoe (1) is articulated with jib (3) to get up, card (51) are located the outer one side of jib (3) and incline towards the direction of keeping away from jib (3) along the direction of keeping away from supporting shoe (1), torsional spring (52) are located the inclined plane of card (51) and step down between groove (33) are close to the lateral wall of supporting shoe (1), and one end and jib (3) fixed connection, the other end and card (51) inclined plane fixed connection.

7. The well lid hoisting device for municipal construction according to claim 6, wherein: the anti-falling component (5) is provided with a plurality of groups along the axial direction of the lifting rod (3).

8. The well lid hoisting device for municipal construction according to claim 4, wherein: the lifting rope (34) is fixedly provided with a plurality of balance rods (341) at the connection part of the lifting rope (34) and the lifting chain (342), the balance rods (341) are arranged around the circumferential direction of the lifting rope (34), and the balance rods (341) incline towards the direction far away from the lifting rope (34) along the direction far away from the supporting block (1).

9. The well lid hoisting device for municipal construction according to claim 1, wherein: one end of one of the lifting chains (342) close to the lifting hook (3421) is fixedly connected with a safety chain (3422), the other end of the safety chain (3422) is fixedly connected with a spring hook (3423), and the spring hook (3423) is hooked at one end of the other lifting chain (342) close to the lifting hook (3421).

10. The well lid hoisting device for municipal construction according to claim 1, wherein: an anti-falling chain (11) is fixedly connected between the supporting block (1) and the lifting rod (3).

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