CN216076948U - Inspection shaft ladder for municipal works construction - Google Patents

Abstract

The utility model relates to an inspection shaft ladder is used in municipal works construction, it includes support frame and cat ladder, the support frame includes a plurality of bracing pieces and atress board, bracing piece one end can be dismantled with the atress board and be connected, the one end that the atress board was kept away from to the bracing piece is provided with the spiral extension board and is used for with ground looks butt, and bracing piece evenly distributed is on the atress board, the cat ladder can be dismantled with the atress board through articulating the subassembly and be connected, it is used for being connected the cat ladder with the atress board to articulate the subassembly, be provided with auxiliary strut on the bracing piece, the one end that auxiliary strut kept away from the bracing piece is used for with inspection shaft mouth looks butt, can dismantle between the auxiliary strut and be provided with the connecting rod, the connecting rod is used for supporting tight auxiliary strut and restricts auxiliary strut and removes. This application has the effect that promotes the convenience that inspection shaft ladder dismouting removed.

Description

Inspection shaft ladder for municipal works construction

Technical Field

The application relates to the field of cat ladder, especially relate to a inspection shaft ladder for municipal works construction.

Background

At present, in most of the existing inspection wells, a multi-stage ladder stand is fixedly arranged on a well wall, and a lot of inspection wells without ladder stands need to be descended into the inspection wells by adopting tools such as rope ladders.

In the related art, the inspection well device for municipal engineering construction with the bulletin number of CN211737013U comprises a support frame and an outer ladder stand, wherein a round frame is arranged in the middle of the support frame and fixedly connected with the support frame through a connecting rod, two symmetrically distributed support pipes are arranged on the right side of the top end of the round frame, an inner ladder stand is arranged on the inner side of the outer ladder stand and is in sliding connection with the outer ladder stand, a lifting lug is arranged at the top end of the inner ladder stand, two symmetrically distributed fixing rods are arranged on the upper side of the right end of the outer ladder stand, a fixing block is arranged between the two fixing rods, a support column is arranged at the bottom end of each fixing rod, the outer surface of each support column is in sliding connection with the inner surface of the corresponding support pipe, a fixing lug is arranged at the top end of each fixing rod, a roller is arranged between the fixing lugs and is in rotating connection with the fixing lugs through a first rotating shaft, and steel wire ropes are arranged on the outer surfaces of the front side and the rear side of the roller, one end of the steel wire rope is fixedly connected with the lifting lug.

In view of the above-mentioned related art, the inventor considers that there is a defect that the inspection well device is not convenient to be disassembled and moved during construction.

SUMMERY OF THE UTILITY MODEL

In order to promote the convenience that inspection shaft ladder dismouting removed, this application provides an inspection shaft ladder for municipal works construction.

The application provides a pair of inspection shaft ladder for municipal works construction adopts following technical scheme:

the utility model provides an inspection shaft ladder is used in municipal works construction, includes support frame and cat ladder, the support frame includes a plurality of bracing pieces and atress board, bracing piece one end can be dismantled with the atress board and be connected, the one end that the atress board was kept away from to the bracing piece is provided with the spiral extension board and is used for with ground looks butt, just bracing piece evenly distributed is on the atress board, the cat ladder can be dismantled with the atress board through articulating the subassembly and be connected, it is used for being connected the cat ladder with the atress board to articulate the subassembly, be provided with auxiliary strut on the bracing piece, auxiliary strut keeps away from the one end of bracing piece and is used for with inspection shaft mouth looks butt, can dismantle between the auxiliary strut and be provided with the connecting rod, the connecting rod is used for supporting tight auxiliary strut and restricts auxiliary strut and removes.

By adopting the technical scheme, when constructors need to enter the inspection well for construction, the inspection well ladder needs to be assembled and then installed at the position of the inspection well opening; be connected auxiliary supporting rod with the bracing piece, a plurality of bracing pieces carry out equipment connection with the atress board, and the one end screw connection that the atress board was kept away from to the bracing piece has the spiral extension board, articulate the subassembly and install on the atress board, keep away from the one end of bracing piece and inspection shaft mouth looks butt earlier with auxiliary supporting rod after, pass through connecting rod looks fixed connection with two adjacent auxiliary supporting rods again, the connecting rod is used for the position of fixed auxiliary supporting rod, again with spiral connection's on the bracing piece spiral extension board contact with ground, the extension length of adjustment spiral extension board makes the bracing piece steadily install subaerially, stretch into the inspection shaft earlier with the cat ladder, install on the cat ladder articulates the subassembly again, constructor can carry out the construction in entering into the inspection shaft after the installation is accomplished, the convenience that the inspection shaft ladder was convenient for the dismouting removed has been promoted.

Optionally, the hanging component comprises a vertical rod and a horizontal rod, one end of the vertical rod is connected with the stress plate through a locking component, one end, away from the stress plate, of the vertical rod is provided with a clamping block clamped with the horizontal rod, the end part of the horizontal rod is clamped with the clamping block, the axis of the horizontal rod is perpendicular to the axis of the vertical rod, the clamping block is provided with a first fastening screw rod used for locking the horizontal rod in a penetrating and threaded connection mode, a connecting component is arranged on the horizontal rod, and the connecting component is used for connecting the ladder stand with the horizontal rod.

Through adopting above-mentioned technical scheme, when needs will articulate the subassembly and install on the atress board, earlier the montant wear to locate on the through-hole of seting up on the atress board, wear out the atress board on the montant and keep away from one of ground and serve fixedly mutually through locking Assembly and atress board, the fixture block that the one end of keeping away from the atress board on the montant set up is with horizontal pole both ends joint, and horizontal pole axis is mutually perpendicular with the montant axis, with fixture block and horizontal pole looks joint through the bolt, the bolt is used for locking horizontal pole and fixture block mutually, the coupling assembling that sets up on the horizontal pole is used for being connected the fastening with horizontal pole and cat ladder, assemble and install on the atress board through articulating the subassembly, reach the effect of the dismouting of being convenient for of articulating the subassembly.

Optionally, locking Assembly includes first locking piece and second locking piece, first locking piece rotates with the second locking piece to be connected, be provided with the draw-in groove in the top of fixture block along vertical direction on the montant, the draw-in groove of montant passes through the through-hole and wears out the atress board, first locking piece and second locking piece rotate the joint go into the draw-in groove of seting up on the montant, the bolt-up connection is passed through to the one end that rotation is connected is kept away from respectively to first locking piece and second locking piece.

Through adopting above-mentioned technical scheme, when will articulate the subassembly and install on the atress board, wear out the through-hole of seting up from the atress board with the one end of keeping away from the fixture block on the montant earlier, rotate the position of adjusting first locking piece and second locking piece, make first locking piece and second locking piece chucking simultaneously to the draw-in groove of seting up on the montant, screw up the bolt of wearing to establish on first locking piece and the second locking piece again, the bolt makes first locking piece and second locking piece with the montant chucking, play and prevent to articulate the effect that the subassembly dropped.

Optionally, a guide cylinder is arranged on the stress plate, the axis of the guide cylinder is coaxial with the axis of the through hole formed in the stress plate, the vertical rod penetrates through the guide cylinder along the axis of the through hole, and a second fastening screw rod used for abutting against the vertical rod is arranged on the guide cylinder in a penetrating manner and in threaded connection.

Through adopting above-mentioned technical scheme, be provided with the guide cylinder on the atress board, the axis and the through-hole axis of guide cylinder are coaxial, and the montant wears to locate on the guide cylinder along the through-hole axis, and the guide cylinder plays the guide effect, and the restriction montant is because of rocking the skew through-hole axis, and the second fastening screw on the guide cylinder restriction montant removes along guide cylinder axis direction, makes the montant fix with the relative position of guide cylinder.

Optionally, coupling assembling includes pressure head and dog, the dog rotates with the pressure head to be connected, the dog is provided with the dog along horizontal pole length direction, leave the mouth that holds with cat ladder looks joint on the dog, wear to establish and threaded connection has the third fastening screw who is used for locking pressure head and dog on the pressure head.

Through adopting above-mentioned technical scheme, coupling assembling is arranged in being connected the cat ladder with articulating the subassembly, stretches into the inspection shaft with the cat ladder earlier, articulates the one end of keeping away from the inspection shaft with the cat ladder and the horizontal pole that articulates the subassembly mutually, with the cat ladder chucking to the holding mouth of seting up on the dog, rotates laminating cat ladder with the pressure head again, screws up the third fastening screw who wears to establish on the pressure head, compresses tightly the cat ladder with pressure head and dog, and the restriction cat ladder rocks.

Optionally, auxiliary strut one end is provided with the pullover, pullover cover is established the one end that is close to the atress board on the bracing piece, pullover wears to establish and threaded connection has the fourth fastening screw who is used for supporting tight bracing piece, auxiliary strut keeps away from pullover one end and is provided with the arc, be provided with a piece along the perpendicular to arcwall face on the arc, arc and a piece are used for contacting with the inspection shaft mouth and support tightly.

By adopting the technical scheme, when the auxiliary supporting rod is sleeved on the supporting rod through the sleeve head, the auxiliary supporting rod can slide in the supporting rod in a reciprocating manner; the fourth fastening screw rod penetrating through the sleeve head is used for limiting the position of the sleeve head on the supporting rod, so that the effect of limiting the reciprocating movement of the auxiliary supporting rod on the supporting rod is achieved; keep away from the one end of pullover on the auxiliary strut and be provided with arc and a piece, the arc cooperatees with inspection shaft mouth inner wall and pastes tightly, and a piece offsets tightly with the ground that is close to inspection shaft mouth inner wall, has further promoted the stability of support frame.

Optionally, the connecting rod includes interior pole, outer pole and turn round, the inside cavity of outer pole, interior pole is worn to establish and threaded connection in the outer pole, interior pole is worn out outer pole one end and is rotated and be connected with the turn round, the turn round axis is in on the same straight line with interior pole axis, the turn round is kept away from the one end of interior pole and is rotated with another auxiliary strut and be connected.

Through adopting above-mentioned technical scheme, keep away from the one end of bracing piece and inspection shaft mouth looks butt back with auxiliary branch, be connected through the connecting rod at two adjacent auxiliary branch, the one end that interior pole was kept away from to the outer pole rotates with auxiliary branch and is connected, the one end that interior pole was kept away from to the turning is rotated with another auxiliary branch and is connected, interior pole spiral is worn to establish in the outer pole, the pole makes interior pole follow length direction and keeps away from one end spiral shell of outer pole and goes out in the rotation, it is tight to offset two liang of adjacent auxiliary branch for prop up auxiliary branch, restrict auxiliary branch's removal simultaneously.

Optionally, a rotating handle is rotatably arranged at one end of the inner rod, which is close to the rotating head.

Through adopting above-mentioned technical scheme, when the pole makes interior pole at the interior spiral of outer pole flexible in needs rotate interior pole, rotate the commentaries on classics on the pole and make interior pole rotate, it is more laborsaving convenient to change to make interior pole rotate.

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

1. when constructors need to enter the inspection well to carry out construction, the inspection well ladder needs to be assembled and then installed at the position of an inspection well opening; be connected auxiliary supporting rod with the bracing piece, a plurality of bracing pieces carry out equipment connection with the atress board, and the one end screw connection that the atress board was kept away from to the bracing piece has the spiral extension board, articulate the subassembly and install on the atress board, keep away from the one end of bracing piece and inspection shaft mouth looks butt earlier with auxiliary supporting rod after, pass through connecting rod looks fixed connection with two adjacent auxiliary supporting rods again, the connecting rod is used for the position of fixed auxiliary supporting rod, again with spiral connection's on the bracing piece spiral extension board contact with ground, the extension length of adjustment spiral extension board makes the bracing piece steadily install subaerially, stretch into the inspection shaft earlier with the cat ladder, install on the cat ladder articulate the subassembly, after the installation constructor can enter into the inspection shaft and be under construction, the convenience that the dismouting of being convenient for the inspection shaft ladder removed has been promoted.

2. When the hanging component is installed on the stress plate, the end, far away from the clamping block, of the vertical rod is firstly penetrated out from the through hole formed in the stress plate, the positions of the first locking block and the second locking block are adjusted in a rotating mode, the first locking block and the second locking block are simultaneously clamped into the clamping groove formed in the vertical rod, then the bolts penetrating through the first locking block and the second locking block are screwed, the bolts enable the first locking block and the second locking block to clamp the vertical rod, and the function of preventing the hanging component from falling is achieved.

Drawings

FIG. 1 is an overall structure view of an inspection well ladder for municipal engineering construction according to an embodiment of the application.

FIG. 2 is the explosion view of inspection shaft ladder support frame for municipal works construction of this application embodiment.

Fig. 3 is an exploded view of inspection shaft ladder hanging assembly for municipal engineering construction according to the embodiment of the application.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

FIG. 5 is an exploded view of inspection shaft ladder connecting rod for municipal engineering construction according to the embodiment of the application.

Fig. 6 is a sectional view taken along line B-B in fig. 5.

Description of reference numerals: 1. climbing a ladder; 2. a support frame; 21. a stress plate; 211. inserting a block; 22. a support bar; 3. an auxiliary strut; 31. an ear mount; 4. sleeving heads; 5. an arc-shaped plate; 6. supporting a block; 7. a helical support plate; 8. a locking assembly; 81. a first lock block; 82. a second lock block; 9. a hitch assembly; 91. a vertical rod; 911. a card slot; 912. a clamping block; 92. a cross bar; 10. a connecting assembly; 101. a pressure head; 102. a stopper; 1021. an accommodating port; 11. a connecting rod; 111. an inner rod; 1111. a handle is rotated; 112. an outer rod; 12. a bolt; 13. a through hole; 14. a fourth fastening screw; 15. a guide cylinder; 16. a second fastening screw; 17. a third fastening screw; 18. turning the head; 19. and (4) turning the handle.

Detailed Description

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

The embodiment of the application discloses inspection shaft ladder for municipal works construction.

With reference to fig. 1 and 2, an inspection shaft ladder for municipal works construction includes support frame 2 and cat ladder 1, support frame 2 includes atress board 21 and three spinal branch vaulting poles 22, the welding has inserted block 211 on the atress board 21 periphery, inserted block 211 length direction is mutually perpendicular with atress board 21 periphery, inserted block 211 evenly distributed is on the periphery of atress board 21, bracing piece 22 one end is pegged graft with inserted block 211 mutually, and inserted block 211 and bracing piece 22 pass through bolt 12 locking, the one end threaded connection that the bracing piece 22 kept away from atress board 21 has spiral extension board 7, spiral extension board 7 is used for with ground looks butt, it makes spiral extension board 7 fully butt with ground to rotate spiral extension board 7, play leveling bracing piece 22, make bracing piece 22 support stable.

Combine fig. 1 and fig. 2, be provided with supplementary branch 3 on the bracing piece 22, 3 one end welding of supplementary branch has pullover 4, pullover 4 cover is established and is close to the one end of atress board 21 on the bracing piece 22, pullover 4 is last to wear to establish and threaded connection has fourth fastening screw 14 that is used for supporting bracing piece 22, the one end welding that pullover 4 was kept away from to supplementary branch 3 has arc 5 and a piece 6, it has a piece 6 to weld along the perpendicular to arcwall face on the arc 5, arc 5 is used for pasting tightly with inspection shaft mouth inner wall cooperatees, a piece 6 offsets tightly with the ground that is close to inspection shaft mouth inner wall. A connecting rod 11 is detachably arranged between the auxiliary supporting rods 3, and the connecting rod 11 is used for tightly abutting against the auxiliary supporting rods 3 and limiting the movement of the auxiliary supporting rods 3.

With reference to fig. 3 and 4, the ladder stand 1 is detachably connected with the stress plate 21 through a hooking component 9, and the hooking component 9 is used for connecting the ladder stand 1 with the stress plate 21. Articulate subassembly 9 and include montant 91 and horizontal pole 92, montant 91 one end is connected with atress board 21 through locking Assembly 8, through-hole 13 that montant 91 one end was seted up on atress board 21 is worn out, the one end of wearing out on the montant 91 from atress board 21 is provided with the draw-in groove 911 with 8 looks joints of locking Assembly, locking Assembly 8 includes first locking piece 81 and second locking piece 82, first locking piece 81 one end and second locking piece 82 one end hinged joint, first locking piece 81 and second locking piece 82 rotate during the draw-in groove 911 of seting up on the montant 91 of joint, the one end that hinged joint was kept away from with second locking piece 82 to first locking piece 81 is passed through bolt 12 and is locked for first locking piece 81 and second locking piece 82 are with montant 91 chucking.

With reference to fig. 3 and 4, a clamping block 912 clamped with the cross rod 92 is welded at one end of the vertical rod 91 far away from the stress plate 21, two ends of the cross rod 92 are respectively clamped with the clamping block 912 in a matched manner, the axis of the cross rod 92 is perpendicular to the axis of the vertical rod 91, the clamping block 912 is fastened and connected with two ends of the cross rod 92 through bolts 12, and the bolts 12 are used for locking the cross rod 92 and the clamping block 912 to limit the movement and tilting of the cross rod 92. The stress plate 21 is provided with a guide cylinder 15 in the welding position of the through hole 13, the axis of the guide cylinder 15 is coaxial with the axis of the through hole 13 on the stress plate 21, the vertical rod 91 can penetrate through the guide cylinder 15 along the axis of the through hole 13, and when the vertical rod 91 penetrates through the guide cylinder 15, the guide cylinder 15 is provided with a second fastening screw 16 which is used for tightly abutting against the vertical rod 91 in a penetrating manner and in threaded connection.

With reference to fig. 3 and 4, the cross bar 92 is provided with the connecting assembly 10, and the connecting assembly 10 has four groups in total, the connecting assembly 10 includes a pressure head 101 and a block 102, the block 102 is provided with an accommodating port 1021 for clamping with the ladder stand 1, the block 102 is hinged with the pressure head 101, the block 102 is welded on two adjacent side wall surfaces in the length direction of the cross bar 92, and two blocks 102 are arranged on each side wall surface of the cross bar 92, so that the distance between the accommodating port 1021 on the block 102 is consistent with the hanging width of the ladder stand 1, the cross section of the cross bar 92 is square, the pressure head 101 is provided with a third fastening screw 17 in a penetrating and threaded connection manner, when the ladder stand 1 is hung on the block 102, the third fastening screw 17 locks the pressure head 101 and the block 102 to play a role in limiting the ladder stand 1 to shake.

With reference to fig. 5 and 6, the connecting rod 11 includes an inner rod 111, an outer rod 112 and a rotary head 18, the connecting rod 11 is used for connecting two adjacent auxiliary struts 3, one end of the outer rod 112 is rotatably connected with the lug seat 31 welded to the auxiliary strut 3 through a bolt 12, an internal thread is provided in the outer rod 112, an external thread matched with the internal thread of the outer rod 112 is provided at one end of the inner rod 111, one end of the inner rod 111 provided with the external thread is spirally connected with the internal thread of the outer rod 112, a rotary handle 1111 is welded to one end of the inner rod 111 far away from the outer rod 112 along the length direction, the axis of the rotary handle 1111 is coaxial with the axis of the inner rod 111, the rotary handle 1111 is rotatably connected with the rotary head 18, the axis of the rotary head 18 is coaxial with the axis of the rotary handle 1111, and one end of the rotary head 18 far away from the rotary handle 1111 along the axis is rotatably connected with the lug seat 31 welded to the other auxiliary strut 3 through a bolt 12. And a rotating handle 19 is hinged to one end of the inner rod 111 close to the rotating head 18.

The installation process of inspection well ladder for municipal engineering construction is as follows:

firstly, the auxiliary supporting rod 3 is sleeved on the supporting rod 22 through the sleeve head 4, then the supporting rod 22 is inserted on the insertion block 211 welded on the stress plate 21, the supporting rod 22 and the insertion block 211 are fastened and locked through the bolt 12, then the arc-shaped plate 5 on the auxiliary supporting rod 3 is matched and attached tightly with the inner wall of the inspection well mouth, the supporting block 6 is abutted tightly against the ground close to the inner wall of the inspection well mouth, after the position of the auxiliary supporting rod 3 is adjusted, the connecting rod 11 is connected on the two adjacent auxiliary supporting rods 3, the inner rod 111 is connected with the outer rod 112 in a spiral mode, one end of the outer rod 112 is connected with the lug seat 31 welded on the auxiliary supporting rod 3 through the bolt 12 in a rotating mode, and then the rotating head 18 connected with the inner rod 111 in a rotating mode is connected with the lug seat 31 welded on the other auxiliary supporting rod 3 through the bolt 12 in a rotating mode.

After the connecting rod 11 is connected with the two adjacent auxiliary supporting rods 3, the rotating handle 19 connected with the hinge on the inner rod 111 is rotated to enable the connecting rod 11 to tightly support the auxiliary supporting rods 3, and then the fourth fastening screw 14 is fastened on the sleeve head 4 to prevent the auxiliary supporting rods 3 from sliding on the supporting rods 22, so that the positions of the auxiliary supporting rods 3 are fixed and tightly supported. After the position of the auxiliary supporting rod 3 is adjusted, the spiral supporting plate 7 on the supporting rod 22 is adjusted to enable the spiral supporting plate 7 to be tightly abutted against the ground, and the supporting rod 22 is in contact leveling with the ground.

Wear out montant 91 along through-hole 13 on the atress board 21, in chucking the draw-in groove 911 of seting up on montant 91 with first locking piece 81 and second locking piece 82 again, rethread bolt 12 locks first locking piece 81 and second locking piece 82, screw up the restriction montant 91 with second fastening screw 16 on the guide cylinder 15 again and remove along the 15 axes of guide cylinder, again with horizontal pole 92 joint income montant 91 go up in the welded fixture block 912, locking horizontal pole 92 and fixture block 912 through bolt 12, be used for restricting horizontal pole 92 to prize.

And finally, the crawling ladder 1 firstly extends into the inspection well, one end, far away from the inspection well, of the crawling ladder 1 is hung on the cross rod 92, the crawling ladder 1 is clamped into the accommodating port 1021 of the block 102, the pressure head 101 is rotated and pressed onto the crawling ladder 1, and the third fastening screw 17 is screwed down, so that the pressure head 101 presses the crawling ladder 1 to limit the crawling ladder 1 to shake.

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 (8)

1. The utility model provides an inspection shaft ladder for municipal works construction which characterized in that: comprises a supporting frame (2) and a ladder stand (1), wherein the supporting frame (2) comprises a plurality of supporting rods (22) and stress plates (21), one end of the supporting rod (22) is detachably connected with the stress plate (21), a spiral supporting plate (7) is arranged at one end of the supporting rod (22) far away from the stress plate (21) and is used for abutting against the ground, the supporting rods (22) are uniformly distributed on the stress plate (21), the ladder stand (1) is detachably connected with the stress plate (21) through a hanging component (9), the hanging component (9) is used for connecting the ladder stand (1) with the stress plate (21), an auxiliary supporting rod (3) is arranged on the supporting rod (22), one end of the auxiliary supporting rod (3) far away from the supporting rod (22) is used for being abutted against the inspection well mouth, a connecting rod (11) is detachably arranged between the auxiliary supporting rods (3), and the connecting rod (11) is used for tightly abutting against the auxiliary supporting rods (3) and limiting the auxiliary supporting rods (3) to move.

2. The inspection well ladder for municipal engineering construction according to claim 1, wherein: articulate subassembly (9) and include montant (91) and horizontal pole (92), montant (91) one end is connected with atress board (21) through locking Assembly (8), the one end that atress board (21) were kept away from in montant (91) is provided with fixture block (912) with horizontal pole (92) looks joint, the tip and fixture block (912) looks joint of horizontal pole (92), just horizontal pole (92) axis is mutually perpendicular with montant (91) axis, wear to establish and threaded connection has the first fastening screw who is used for locking horizontal pole (92) on fixture block (912), be provided with coupling assembling (10) on horizontal pole (92), coupling assembling (10) are used for being connected cat ladder (1) with horizontal pole (92).

3. The inspection well ladder for municipal engineering construction according to claim 2, wherein: locking Assembly (8) include first locking piece (81) and second locking piece (82), first locking piece (81) rotate with second locking piece (82) and are connected, be provided with draw-in groove (911) in the top of fixture block (912) along vertical direction on montant (91), atress board (21) are worn out through-hole (13) draw-in groove (911) of montant (91), in draw-in groove (911) seted up on first locking piece (81) and second locking piece (82) rotate the joint and advance montant (91), the one end of keeping away from the rotation connection respectively of first locking piece (81) and second locking piece (82) is passed through bolt (12) fastening connection.

4. The inspection well ladder for municipal engineering construction according to claim 3, wherein: be provided with guide cylinder (15) on atress board (21), through-hole (13) the axis of seting up on guide cylinder (15) axis and atress board (21) is coaxial, montant (91) wear to locate on guide cylinder (15) along through-hole (13) axis, wear to establish and threaded connection has second fastening screw (16) that are used for supporting tight montant (91) on guide cylinder (15).

5. The inspection well ladder for municipal engineering construction according to claim 2, wherein: the connecting assembly (10) comprises a pressure head (101) and a stop block (102), the stop block (102) is rotatably connected with the pressure head (101), the stop block (102) is arranged on the length direction of the cross rod (92), an accommodating opening (1021) clamped with the ladder stand (1) is reserved on the stop block (102), and the pressure head (101) is provided with a third fastening screw (17) which is used for locking the pressure head (101) and the stop block (102) in a penetrating and threaded manner.

6. The inspection well ladder for municipal engineering construction according to claim 1, wherein: auxiliary branch (3) one end is provided with pullover (4), pullover (4) cover is established and is close to the one end of atress board (21) on bracing piece (22), it has fourth fastening screw (14) that are used for supporting tight bracing piece (22) to wear to establish and threaded connection on pullover (4), the one end that pullover (4) were kept away from in auxiliary branch (3) is provided with arc (5), be provided with a piece (6) along the perpendicular to arc on arc (5), arc (5) and a piece (6) are used for contacting with the inspection shaft mouth and support tightly.

7. The inspection well ladder for municipal engineering construction according to claim 1, wherein: connecting rod (11) are including interior pole (111), outer pole (112) and turn round (18), the inside cavity of outer pole (112), interior pole (111) is worn to establish and threaded connection in outer pole (112), interior pole (111) is worn out outer pole (112) one end and is rotated and be connected with turn round (18), turn round (18) axis is in on the same straight line with interior pole (111) axis, the one end that interior pole (111) were kept away from in turn round (18) rotates with another auxiliary strut (3) and is connected.

8. The inspection well ladder for municipal engineering construction according to claim 7, wherein: and a rotating handle (19) is rotatably arranged at one end of the inner rod (111) close to the rotating head (18).

Images