CN210150674U

CN210150674U - Lifting frame for tunnel construction

Info

Publication number: CN210150674U
Application number: CN201920682046.4U
Authority: CN
Inventors: 罗慧刚; 董延东; 陈祥林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-03-17
Anticipated expiration: 2029-05-13

Abstract

The utility model discloses a crane for tunnel construction, including base, the one-level elevating gear of fixed connection on the base and the second grade elevating gear of connection on the one-level elevating gear, the bottom fixed mounting of base has the removal wheel, the apical force groove has been seted up to the bottom symmetry of base, cylinder fixedly connected with supporting foot seat is passed through at the top of apical force inslot wall, the bottom of supporting foot seat is run through the apical force groove and is extended to its outside, the right side fixedly connected with of base promotes the handle, the left top fixedly connected with cat ladder strut of base. This crane for tunnel construction, structural design is reasonable, and convenient to use in the tunnel work progress, the maintainer need not to detect through the cat ladder mode again, great reduction the danger of construction, simultaneously more be convenient for remove, can conveniently investigate the tunnel in different regions, improved tunnel construction's efficiency, can all-round satisfied user demand.

Description

Lifting frame for tunnel construction

Technical Field

The utility model relates to a tunnel construction technical field specifically is a crane for tunnel construction.

Background

The tunnel is an engineering building buried in the stratum and is a form of utilizing underground space by human beings, and the tunnel can be divided into a traffic tunnel, a hydraulic tunnel, a municipal tunnel and a mine tunnel. The tunnel construction is a reasonable construction method from the viewpoint of rock mechanics, and is a new engineering construction method formed by adopting a system formed by a spray anchor technology, monitoring measurement and the like and a rock mechanics theory.

In the process of tunnel construction, construction or inspection is often required to be carried out above a tunnel, detection is generally carried out in the prior art in a ladder climbing mode, the method is high in danger and inconvenient to transfer, the tunnels in different areas need to be subjected to transposition climbing repeatedly, the efficiency of tunnel construction is greatly reduced, and the requirements are difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crane for tunnel construction to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a lifting frame for tunnel construction comprises a base, a primary lifting device fixedly connected to the base and a secondary lifting device connected to the primary lifting device, wherein moving wheels are fixedly mounted at the bottom of the base, jacking grooves are symmetrically formed in the bottom of the base, supporting foot seats are fixedly connected to the tops of the inner walls of the jacking grooves through air cylinders, the bottoms of the supporting foot seats penetrate through the jacking grooves and extend to the outside of the supporting foot seats, pushing handles are fixedly connected to the right side of the base, and ladder support frames are fixedly connected to the tops of the left sides of the base;

the primary lifting device comprises a fixed shell, the bottom of the fixed shell is fixedly connected with the top of a base, a fixed block is fixedly connected with the midpoint of the bottom of the inner wall of the fixed shell, limiting rods are fixedly connected with the left side and the right side of the fixed block, one end of each limiting rod, far away from the fixed block, is fixedly connected with the inner wall of the fixed shell, the surface of each limiting rod is movably connected with a translation block, driving motors are fixedly mounted on the left side and the right side of the fixed shell and below the limiting rods, a driving rotating shaft is fixedly connected onto the output shaft of each driving motor, one end, far away from the driving motor, of each driving rotating shaft penetrates through the fixed shell and extends to the inner part of the fixed shell, one end, close to the fixed block, of each lead screw penetrates through the translation block and extends to the outer part of the translation, the first connecting seat is movably connected with a connecting rod, one end of the connecting rod, which is far away from the first connecting seat, is movably connected with a second connecting seat, and the tops of the two second connecting seats are fixedly connected through a first pushing block;

the second-level lifting device comprises an expansion bracket, the bottom of the expansion bracket is fixedly connected with the top of the first push block, the top of the expansion bracket is fixedly connected with the second push block, the top of the second push block is fixedly connected with a bearing table, the top of the bearing table is fixedly connected with a protective guard, and a ladder frame groove is formed in the left side of the bearing table.

Preferably, the number of the moving wheels is four, and the moving wheels are fixedly installed at four corners of the bottom of the base respectively.

Preferably, the left side of the base is fixedly connected with a support rib corresponding to the lower part of the ladder stand support frame, and one side of the support rib, which is close to the ladder stand support frame, is fixedly connected with the ladder stand support frame.

Preferably, the equal fixedly connected with riser in both sides around the base top, the equal fixedly connected with stopper in both sides around the first ejector pad, the position that the riser corresponds the stopper is seted up rather than the spacing groove that cooperates and use.

Preferably, the left side and the right side of the fixed shell correspond to the position of the driving motor and are fixedly connected with protective shells, and heat dissipation holes are formed in the surfaces of the protective shells.

Preferably, the fixed block left and right sides just corresponds the equal fixedly connected with antifriction bearing in position of lead screw, the lead screw is close to antifriction bearing's one end and runs through antifriction bearing and extend to its inside rather than swing joint.

Preferably, the surface of the screw rod is provided with an external thread, and the position of the translation block corresponding to the screw rod is provided with an internal thread matched with the external thread.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model is convenient to transfer the whole lifting frame and overhaul the tunnel in multiple directions by arranging the moving wheels and the pushing handles, and by arranging the primary lifting device and the secondary lifting device, the bearing platform can be lifted and lowered at different heights according to the tunnel condition, so that maintainers with different heights can conveniently overhaul tunnels with different heights, after the selection position is finished, the air cylinder drives the supporting foot seat to jack up and support the lifting frame, thereby ensuring the stability of the lifting frame, improving the safety during maintenance, the lifting frame for tunnel construction has reasonable structural design and convenient use, and in the tunnel construction process, an maintainer does not need to detect in a ladder climbing mode, thereby greatly reducing the construction risk, meanwhile, the tunnel inspection device is more convenient to move, tunnels in different areas can be conveniently checked, the efficiency of tunnel construction is improved, and the use requirements can be comprehensively met.

2. The utility model discloses a set up the brace rod, the fixed degree of being connected between cat ladder strut and the base has been consolidated, prevent that cat ladder strut bearing is too big and drop from the base, through setting up the riser, stopper and spacing groove, the movement track to first ejector pad is carried on spacingly, prevent that first ejector pad from producing the unstable condition of skew at the lift in-process, through setting up the protecting crust, firstly, driving motor's positioning action has been played, secondly, can prevent that the dust from getting into to influence life among the driving motor, the louvre has improved driving motor's radiating efficiency, through setting up antifriction bearing, the end of keeping away from driving motor to the lead screw effectively supports, the stationarity of lead screw when rotating has been improved.

Drawings

FIG. 1 is a sectional view of the front view of the present invention;

fig. 2 is a schematic structural diagram of a side view of the present invention;

fig. 3 is a structural section view of a front view of the one-level lifting device of the present invention.

In the figure: the lifting device comprises a base 1, a first-stage lifting device 2, a fixed shell 21, a fixed block 22, a limiting rod 23, a translation block 24, a driving motor 25, a driving rotating shaft 26, a screw rod 27, a first connecting seat 28, a connecting rod 29, a second connecting seat 210, a first pushing block 211, a protective shell 212, a rolling bearing 213, a second-stage lifting device 3, an expansion bracket 31, a second pushing block 32, a bearing table 33, a protective guard 34, a ladder frame groove 35, a movable wheel 4, a jacking groove 5, an air cylinder 6, a supporting foot seat 7, a pushing handle 8, a ladder stand 9, a supporting rib 10, a vertical plate 11, a limiting block 12 and a limiting groove 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a lifting frame for tunnel construction comprises a base 1, a first-stage lifting device 2 fixedly connected to the base 1, and a second-stage lifting device 3 connected to the first-stage lifting device 2, wherein moving wheels 4 are fixedly mounted at the bottom of the base 1, the moving wheels 4 are universal wheels and are more convenient to move, the moving wheels 4 are four and are respectively and fixedly mounted at four corners of the bottom of the base 1, a jacking groove 5 is symmetrically formed at the bottom of the base 1, a supporting foot base 7 is fixedly connected to the top of the inner wall of the jacking groove 5 through an air cylinder 6, the bottom of the supporting foot base 7 penetrates through the jacking groove 5 and extends to the outside of the supporting foot base, when the lifting frame needs to be fixed, the air cylinder 6 is started to support the supporting foot base 7 on the ground, the stability is ensured, a pushing handle 8 is fixedly connected to the right side of the base 1, the pushing handle 8 is convenient for transferring the whole lifting frame, promote simultaneously that the surperficial cover of handle 8 is equipped with the slipmat, prevent that the user from promoting the in-process and producing the phenomenon of taking off the hand, the left top fixedly connected with cat ladder strut 9 of base 1, the 1 left side of base just corresponds the below fixedly connected with brace 10 of cat ladder strut 9, one side and the cat ladder strut 9 fixed connection that the brace 10 is close to cat ladder strut 9, through setting up brace 10, the fixed degree of being connected between cat ladder strut 9 and the base 1 has been consolidated, prevent that cat ladder strut 9 bearing is too big and drop from base 1.

Referring to fig. 3, the first-stage lifting device 2 includes a fixed housing 21, the bottom of the fixed housing 21 is fixedly connected to the top of the base 1, a fixed block 22 is fixedly connected to the midpoint of the bottom of the inner wall of the fixed housing 21, limit rods 23 are fixedly connected to the left and right sides of the fixed block 22, one end of each limit rod 23 away from the fixed block 22 is fixedly connected to the inner wall of the fixed housing 21, a translation block 24 is movably connected to the surface of each limit rod 23, driving motors 25 are fixedly mounted on the left and right sides of the fixed housing 21 and below the limit rods 23, the driving motors 25 are slow motors, protective housings 212 are fixedly connected to the left and right sides of the fixed housing 21 and correspond to the positions of the driving motors 25, the protective housings 212 are arranged to play a role in positioning the driving motors 25, and prevent dust from entering the driving motors 25 to affect the service life, the heat dissipation holes improve the heat dissipation efficiency of the driving motor 25, the output shaft of the driving motor 25 is fixedly connected with a driving rotating shaft 26, one end of the driving rotating shaft 26, far away from the driving motor 25, penetrates through the fixed shell 21 and extends to the inner part of the fixed shell and is fixedly connected with a lead screw 27, one end of the lead screw 27, close to the fixed block 22, penetrates through the translation block 24 and extends to the outer part of the translation block, the surface of the lead screw 27 is provided with external threads, the translation block 24 is provided with internal threads matched with the external threads at a position corresponding to the lead screw 27, the left side and the right side of the fixed block 22 are fixedly connected with rolling bearings 213 at positions corresponding to the lead screw 27, one end of the lead screw 27, close to the rolling bearings 213, penetrates through the rolling bearings 213 and extends to the inner part and is movably connected with the rolling bearings 213, the end of the lead screw 27, far away from the, swing joint has connecting rod 29 on first connecting seat 28, the one end swing joint that first connecting seat 28 was kept away from to connecting rod 29 has second connecting seat 210, first ejector pad 211 fixed connection is passed through at the top of two second connecting seats 210, the equal fixedly connected with riser 11 in both sides around the base 1 top, the equal fixedly connected with stopper 12 in both sides around first ejector pad 211, the spacing groove 13 rather than the cooperation use is seted up to the position that riser 11 corresponds stopper 12, through setting up riser 11, stopper 12 and spacing groove 13, the movement track to first ejector pad 211 carries on spacingly, prevent that first ejector pad 211 from producing the unstable condition of skew at the lift in-process.

Referring to fig. 1-2, the secondary lifting device 3 includes an expansion bracket 31, a bottom of the expansion bracket 31 is fixedly connected to a top of the first pushing block 211, a top of the expansion bracket 31 is fixedly connected to the second pushing block 32, a top of the second pushing block 32 is fixedly connected to a carrying platform 33, a top of the carrying platform 33 is fixedly connected to a guard rail 34, the guard rail 34 ensures safety of a maintainer on the carrying platform 33, and a ladder mounting groove 35 is formed in a left side of the carrying platform 33.

The utility model has the advantages that the moving wheel 4 and the pushing handle 8 are arranged, the whole lifting frame is convenient to transfer, the tunnel is convenient to overhaul in multiple directions, the lifting platform 33 can be lifted in different heights according to the tunnel condition by arranging the primary lifting device 2 and the secondary lifting device 3, the lifting frame is convenient for overhauls tunnels in different heights by overhauls with different heights, after the primary lifting device and the secondary lifting device are arranged, the air cylinder 6 is utilized to drive the supporting foot seat 7 to jack up and support the lifting frame after the primary lifting device and the secondary lifting device are selected and positioned, the stability of the lifting frame is ensured, the safety during overhaul is improved, the lifting frame for tunnel construction has reasonable structural design and convenient use, in the tunnel construction process, the overhauls do not need to detect in a ladder climbing mode, the construction danger is greatly reduced, meanwhile, the lifting device is more convenient to move, the tunnels in different areas can, can meet the use requirement in all directions.

When in use, the lifting frame is pushed to a place needing to be overhauled in a tunnel by the pushing handle 8 through the four moving wheels 4, the cylinder 6 is started to enable the supporting foot seats 7 to support the ground, the stability is ensured, according to the height needing to be lifted, the driving motor 25 is started in the first lifting device 2, the driving rotating shaft 26 drives the screw rod 27 to rotate stably and slowly in the rolling bearing 213, the translation block 24 which is in threaded connection with the screw rod 27 moves to one side of the fixed block 22 under the limiting action of the limiting rod 23, the first push block 211 moves upwards under the movable connection action of the first connecting seat 28, the connecting rod 29 and the second connecting seat 210, the limiting block 12 and the limiting groove 13 limit the first push block 211 at the same time, the second-level lifting device 3 is pushed vertically, the telescopic frame 31 can be started according to use requirements, and after the lifting frame is lifted to a specified height, the bottom end of the ladder is propped against the ladder, the top end is erected in the ladder erecting groove 35, and an inspector can go up to the bearing table 33 through a ladder.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a crane for tunnel construction, includes base (1), one-level elevating gear (2) and second grade elevating gear (3) of connection on one-level elevating gear (2) of fixed connection on base (1), its characterized in that: the movable ladder is characterized in that movable wheels (4) are fixedly installed at the bottom of the base (1), jacking grooves (5) are symmetrically formed in the bottom of the base (1), the top of the inner wall of each jacking groove (5) is fixedly connected with a supporting foot base (7) through an air cylinder (6), the bottom of each supporting foot base (7) penetrates through the jacking groove (5) and extends to the outside of the supporting foot base, a pushing handle (8) is fixedly connected to the right side of the base (1), and a ladder support frame (9) is fixedly connected to the top of the left side of the base (1);

the one-level lifting device (2) comprises a fixed shell (21), the bottom of the fixed shell (21) is fixedly connected with the top of the base (1), a fixed block (22) is fixedly connected with the middle point of the bottom of the inner wall of the fixed shell (21), limiting rods (23) are fixedly connected with the left side and the right side of the fixed block (22), one ends, far away from the fixed block (22), of the limiting rods (23) are fixedly connected with the inner wall of the fixed shell (21), translation blocks (24) are movably connected with the surface of the limiting rods (23), driving motors (25) are fixedly installed on the left side and the right side of the fixed shell (21) and below the limiting rods (23), driving rotating shafts (26) are fixedly connected onto output shafts of the driving motors (25), one ends, far away from the driving motors (25), of the driving rotating shafts (26) penetrate through the fixed shell (21) and extend to inner portions of the fixed connecting screw, one end, close to the fixed block (22), of the screw rod (27) penetrates through the translation block (24) and extends to the outside of the translation block, the top of the translation block (24) penetrates through the fixed shell (21) and extends to the outside of the fixed shell and is fixedly connected with a first connecting seat (28), a connecting rod (29) is movably connected onto the first connecting seat (28), one end, far away from the first connecting seat (28), of the connecting rod (29) is movably connected with a second connecting seat (210), and the tops of the two second connecting seats (210) are fixedly connected through a first push block (211);

second grade elevating gear (3) are including expansion bracket (31), the bottom of expansion bracket (31) and the top fixed connection of first ejector pad (211), the top fixedly connected with second ejector pad (32) of expansion bracket (31), the top fixedly connected with plummer (33) of second ejector pad (32), the top fixedly connected with rail guard (34) of plummer (33), ladder frame groove (35) have been seted up in the left side of plummer (33).

2. The crane for tunnel construction according to claim 1, wherein: the number of the moving wheels (4) is four, and the moving wheels are fixedly arranged at four corners of the bottom of the base (1) respectively.

3. The crane for tunnel construction according to claim 1, wherein: the ladder stand is characterized in that a support rib (10) is fixedly connected to the left side of the base (1) and corresponds to the lower portion of the ladder stand support frame (9), and one side, close to the ladder stand support frame (9), of the support rib (10) is fixedly connected with the ladder stand support frame (9).

4. The crane for tunnel construction according to claim 1, wherein: the base (1) top around both sides equal fixedly connected with riser (11), the equal fixedly connected with stopper (12) in both sides around first ejector pad (211), spacing groove (13) rather than the cooperation is seted up in the position that riser (11) correspond stopper (12).

5. The crane for tunnel construction according to claim 1, wherein: the protection device is characterized in that protection shells (212) are fixedly connected to the left side and the right side of the fixed shell (21) and correspond to the positions of the driving motor (25), and heat dissipation holes are formed in the surfaces of the protection shells (212).

6. The crane for tunnel construction according to claim 1, wherein: the utility model discloses a lead screw, including fixed block (22), the equal fixedly connected with antifriction bearing (213) in position that fixed block (22) left and right sides just correspond lead screw (27), antifriction bearing (213) are run through and extend to its inside rather than swing joint to the one end that lead screw (27) are close to antifriction bearing (213).

7. The crane for tunnel construction according to claim 1, wherein: the surface of the screw rod (27) is provided with an external thread, and the position of the translation block (24) corresponding to the screw rod (27) is provided with an internal thread matched with the external thread.