Box culvert jacking device with small resistance

Abstract

The invention discloses a small-resistance box culvert jacking device which comprises a sliding plate, a box culvert jacking mechanism, a box culvert and a soil cutting mechanism, the box culvert jacking mechanism is arranged on the sliding plate, the box culvert which is jacked by the box culvert jacking mechanism to move is placed on the sliding plate, the soil cutting mechanism is arranged at the rear end of the box culvert, and the soil cutting mechanism is arranged at the rear end of the box culvert. The soil cutting mechanism comprises a cutting frame body, a support, a motor and a spiral auger blade, the cross section of the cutting frame body is matched with the cross section of the rear end of the box culvert, guide slopes are arranged on the inner sides of the rear ends of side wall bodies of the cutting frame body, the support is arranged in the cutting frame body, and the motor is arranged on the support; compared with the prior art, the box culvert has the advantages that the frictional resistance between the box culvert and soil can be reduced, the size of an anchor beam below the sliding plate is reduced, and therefore the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road box culvert construction, in particular to the technical field of a box culvert jacking device with small resistance. BACKGROUND

[0002] With the rapid development of China's modernization construction, urban construction has also been greatly developed, but due to the lagging development of urban traffic construction, a large number of railway and highway level crossings become a "bottleneck", causing a large number of traffic jams, therefore, changing a large number of highway and railway level crossings into overpass crossings has become an urgent and heavy task to improve urban traffic conditions and ensure traffic safety, in recent years, in the construction process of many three-dimensional traffic modes, jacking box culvert structure has become the most promising and widely used construction method in overpass construction due to its convenient construction and low construction cost, box culvert jacking construction refers to the construction method of jacking a prefabricated box culvert from one side of the road when a new road needs to pass under the original road or a plane intersection is changed into a three-dimensional intersection, in order to not affect the traffic function of the original road.

[0003] A box culvert jacking branch air pipe drilling air cushion system for the box culvert jacking device of the present application, uses an air compressor as the air source of the air cushion, and additionally sets a wind storage bag to adjust the air pressure and air volume, the air supply pipeline is composed of a main air pipe and a branch air pipe, the main air pipe and the branch air pipe are connected through a tee joint, the main air pipe is arranged in the box culvert, the branch air pipe is pre-buried under the box culvert bottom plate, and the air outlet of the branch air pipe is connected to the surface of the sliding plate, using the air cushion system, the static friction between the box culvert and the sliding plate is only 0.3 to 0.4 times of the weight of the box culvert, so that the stress on the back of the jack and the back beam behind the jack can be greatly reduced, the design size and the engineering quantity of the back and the back beam can be reduced, the amount of steel in the sliding plate can be reduced, the size of the anchor beam under the sliding plate can be reduced, and thus the engineering cost is reduced, the application can only reduce the static friction between the box culvert and the sliding plate, and the friction resistance between the box culvert and the soil still needs to be solved, so as to further reduce the jacking resistance of the box culvert. SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art, and to provide a box culvert jacking device with small resistance, which can reduce the friction resistance between the box culvert and the soil, reduce the size of the anchor beam under the sliding plate, and thus reduce the engineering cost.

[0005] In order to achieve the above object, the application provides a box culvert jacking device with small resistance, which comprises a sliding plate, a box culvert jacking mechanism, a box culvert and a soil cutting mechanism, the sliding plate is provided with the box culvert jacking mechanism, the sliding plate is provided with the box culvert which is jacked by the box culvert jacking mechanism, the rear end of the box culvert is provided with the soil cutting mechanism, the soil cutting mechanism comprises a cutting frame, a support, a motor and a spiral auger blade, the cross section of the cutting frame is consistent with the cross section of the rear end of the box culvert, the rear end of the side wall of the cutting frame is provided with a guide slope on the inner side, the cutting frame is provided with the support, the support is provided with the motor, and the rotating shaft of the motor is provided with the spiral auger blade.

[0006] Preferably, the support comprises a motor protection shell and support bodies which are uniformly and circumferentially spaced on the motor protection shell, the rear end of each support body is provided with a blade, and the motor protection shell is provided with the motor.

[0007] Preferably, the box culvert jacking mechanism comprises a plurality of traction mechanisms, two steel wire rope storage assemblies, two steel wire ropes, a hanging piece and two steel wire rope guide wheels, the front end of the sliding plate is provided with the traction mechanism and the steel wire rope storage assembly which is pulled by the traction mechanism, the rear end of the sliding plate is provided with the steel wire rope guide wheel corresponding to the steel wire rope storage assembly, and each two corresponding steel wire rope storage assemblies and steel wire rope guide wheels are provided with a steel wire rope connected with the hanging piece.

[0008] Preferably, the steel wire rope storage assembly comprises an upper seat body, a lower seat body, a plurality of upper guide wheels and a plurality of lower guide wheels, the upper seat body is provided with the upper guide wheels which are arranged in a row and located on the lower side of the steel wire rope, the lower seat body is provided with the lower guide wheels which are arranged in a row and located on the upper side of the steel wire rope, and the lower guide wheels and the upper guide wheels are staggered.

[0009] Preferably, the number of the traction mechanisms is two, and the two traction mechanisms are connected with the two steel wire rope storage assemblies respectively.

[0010] Preferably, the traction mechanism comprises a gantry, a pushing hydraulic cylinder, a traction steel wire rope, a fixed pulley block, a movable pulley block and a moving guide wheel, the gantry is provided with the fixed pulley block and the pushing hydraulic cylinder, the piston rod of the pushing hydraulic cylinder is provided with the moving guide wheel, the fixed pulley block and the movable pulley block are provided with the traction steel wire rope, one end of the traction steel wire rope is fixedly connected with the wheel frame of the fixed pulley block, the other end passes through the lower end of the moving guide wheel and is fixedly connected with the gantry.

[0011] Preferably, the hanging piece comprises a sliding seat and a plurality of top seats provided on the sliding seat.

[0012] Preferably, both ends of the sliding seat are provided with sliding mechanisms, and the sliding plate is provided with inclined guide rails corresponding to and matched with the sliding mechanisms.

[0013] As preferred, the sliding mechanism comprises a mounting seat, a lower end of the mounting seat is provided with a mounting slope which is parallel to the inclined guide rails, the mounting slope is provided with two front and rear moving wheels which are placed on the corresponding inclined guide rails, an upper end of the mounting seat is provided with two front and rear slide rods which pass through the slide base, upper ends of the slide rods are provided with anti-dropping bodies, springs are sleeved on the slide rods between the mounting seat and the slide base.

[0014] The application has the advantages that: the inside of the rear end of the side wall of the cutting frame is provided with a guide slope, which greatly reduces the resistance surface of the jacking end of the cutting frame; the excess soil at the rear end of the side wall of the cutting frame is guided into the cutting frame, so that the soil is prevented from entering the outside of the cutting frame and increasing the friction resistance; the cutting frame is provided with a support, the support is provided with a motor, the rotating shaft of the motor is provided with a spiral auger blade, the spiral auger blade is driven to rotate by the motor, a part of the soil entering the cutting frame is hollowed out, so that the soil entering the cutting frame has sufficient extrusion space, the friction resistance between the cutting frame and the soil is effectively reduced, compared with the prior art, the friction resistance between the box culvert and the soil is reduced, the size of the anchor beam under the sliding plate is reduced, and the engineering cost is reduced.

[0015] The features and advantages of the application will be described in detail with reference to the embodiments and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the box culvert jacking device with small resistance of the application; Figure 2 is a partial top view of the box culvert jacking device with small resistance of the application.

[0017] In the figure: 1-sliding plate, 2-box culvert jacking mechanism, 3-box culvert, 4-soil cutting mechanism, 5-sliding mechanism, 6-inclined guide rail, 21-steel wire rope guide wheel, 22-towing mechanism, 23-steel wire rope storage assembly, 24-steel wire rope, 25-hanging piece, 41-cutting frame, 42-support, 43-motor, 44-spiral auger blade, 45-guide slope, 51-mounting seat, 52-mounting slope, 53-moving wheel, 54-slide rod, 55-anti-dropping body, 56-spring, 221-gantry frame, 222-pushing hydraulic cylinder, 223-towing steel wire rope, 224-fixed pulley set, 225-moving pulley set, 226-moving guide rail wheel, 231-upper seat body, 232-lower seat body, 233-upper guide rail wheel, 234-lower guide rail wheel, 251-slide base, 252-top seat, 421-motor protection shell, 422-supporting body, 423-blade edge. DETAILED DESCRIPTION

[0018] Reference Figure 1 and Figure 2The application discloses a box culvert jacking device with small resistance, which comprises a sliding plate 1, a box culvert jacking mechanism 2, a box culvert 3 and a soil cutting mechanism 4. The box culvert jacking mechanism 2 is arranged on the sliding plate 1. The box culvert 3 is arranged on the sliding plate 1 and is jacked by the box culvert jacking mechanism 2. The rear end of the box culvert 3 is provided with the soil cutting mechanism 4. The soil cutting mechanism 4 comprises a cutting frame 41, a support 42, a motor 43 and a spiral auger blade 44. The cross section of the cutting frame 41 is consistent with the cross section of the rear end of the box culvert 3. The rear end of the side wall of the cutting frame 41 is provided with a guide inclined surface 45. The support 42 is arranged in the cutting frame 41. The motor 43 is arranged on the support 42. The rotary shaft of the motor 43 is provided with the spiral auger blade 44.

[0019] The support 42 comprises a motor protection shell 421 and a support body 422 which is uniformly and circumferentially spaced on the motor protection shell 421. The rear end of the support body 422 is provided with a blade edge 423. The motor 43 is arranged in the motor protection shell 421.

[0020] The box culvert jacking mechanism 2 comprises a plurality of traction mechanisms 22, two steel wire rope storage assemblies 23, two steel wire ropes 24, a hanging piece 25 and two steel wire rope guide wheels 21. The front end of the sliding plate 1 is provided with the traction mechanism 22 and the steel wire rope storage assembly 23 which is pulled by the traction mechanism 22. The rear end of the sliding plate 1 is provided with the steel wire rope guide wheel 21 which corresponds to the steel wire rope storage assembly 23. The steel wire rope 24 which is connected with the hanging piece 25 is arranged on every two corresponding steel wire rope storage assemblies 23 and steel wire rope guide wheels 21.

[0021] The steel wire rope storage assembly 23 comprises an upper seat body 231, a lower seat body 232, a plurality of upper guide wheels 233 and a plurality of lower guide wheels 234. The upper guide wheels 233 which are arranged in a row and located on the lower side of the steel wire rope 24 are arranged on the upper seat body 231. The lower guide wheels 234 which are arranged in a row and located on the upper side of the steel wire rope 24 are arranged on the lower seat body 232. The lower guide wheels 234 and the upper guide wheels 233 are staggered.

[0022] The number of the traction mechanisms 22 is two. The two traction mechanisms 22 are connected with the two steel wire rope storage assemblies 23 respectively.

[0023] The traction mechanism 22 comprises a portal frame 221, a pushing hydraulic cylinder 222, a traction steel wire rope 223, a fixed pulley set 224, a movable pulley set 225 and a moving guide rail wheel 226, the portal frame 221 is provided with the fixed pulley set 224 and the pushing hydraulic cylinder 222, the piston rod of the pushing hydraulic cylinder 222 is provided with the moving guide rail wheel 226, the fixed pulley set 224 and the movable pulley set 225 are provided with the traction steel wire rope 223, one end of the traction steel wire rope 223 is fixedly connected with a wheel frame of the fixed pulley set 224, and the other end passes through the lower end of the moving guide rail wheel 226 and is fixedly connected with the portal frame 221.

[0024] The hanging piece 25 comprises a sliding seat 251 and a plurality of top seats 252 arranged on the sliding seat 251.

[0025] Both ends of the sliding seat 251 are provided with sliding mechanisms 5, and the sliding plate 1 is provided with inclined guide rails 6 corresponding to and matched with the sliding mechanisms 5.

[0026] The sliding mechanism 5 comprises a mounting seat 51, the lower end of the mounting seat 51 is provided with a mounting inclined surface 52 parallel to the inclined guide rails 6, the mounting inclined surface 52 is provided with front and rear moving wheels 53 resting on the corresponding inclined guide rails 6, the upper end of the mounting seat 51 is provided with front and rear sliding rods 54 penetrating the sliding seat 251, the upper end of the sliding rod 54 is provided with an anti-dropping body 55, and the sliding rod 54 between the mounting seat 51 and the sliding seat 251 is provided with a spring 56.

[0027] The working process of the box culvert jacking device with small resistance is as follows: In the working process of the box culvert jacking device with small resistance, the top seat 252 is jacked against the front end of the box culvert 3, then the pushing hydraulic cylinder 222 is started to be elongated, and the motor 43 drives the spiral auger blade 44 to rotate, the pushing hydraulic cylinder 222 pushes the traction steel wire rope 223 through the moving guide rail wheel 226, the traction steel wire rope 223 pulls the movable pulley set 225 to move upward, the movable pulley set 225 drives the upper guide rail wheel 233 to move upward through the upper seat body 231 and pulls the steel wire rope 24, the steel wire rope 24 pulls the hanging piece 25 to move backward, and the hanging piece 25 pushes the box culvert 3 to move backward and jacks.

[0028] When the moving wheel 53 moves backward and upward along the inclined guide rail 6, the moving wheel 53 drives the mounting seat 51 to move upward and compresses the spring 56.

[0029] The front end of the slide plate 1 is provided with a traction mechanism 22 and a steel wire rope storage assembly 23 pulled by the traction mechanism 22, the rear end of the slide plate 1 is provided with a steel wire rope guide wheel 21 corresponding to the steel wire rope storage assembly 23, every two corresponding steel wire rope storage assemblies 23 and steel wire rope guide wheels 21 are provided with a steel wire rope 24 connected with a hanging piece 25, and the upper seat body 231 of the steel wire rope storage assembly 23 is provided with an upper guide wheel 233 arranged in a row and located on the lower side of the steel wire rope 24, the lower seat body 232 is provided with a lower guide wheel 234 arranged in a row and located on the upper side of the steel wire rope 24, the lower guide wheel 234 is staggered with the upper guide wheel 233, the winding storage length of the steel wire rope is multiplied compared with the interval of the upper guide wheel and the lower guide wheel, so that the stroke of the push box culvert is farther under the same extension length of the push hydraulic cylinder, and the work efficiency and the use convenience are improved.

[0030] Through the cooperation of the traction steel wire rope 223, the fixed pulley block 224 and the movable pulley block 225, the requirement of the box culvert jacking force is effectively reduced, and the use of the push hydraulic cylinder 222 is reduced.

[0031] Through the cooperation of the sliding mechanism 5 and the inclined guide rail 6, after the first jacking is completed, the steel wire rope 24 is loosened, and is automatically slid forward to the position by the gravity of the sliding mechanism 5 and the hanging piece 25.

[0032] The above examples are descriptions of the application, not limitations of the application, and any simple transformation of the application belongs to the protection scope of the application.

Claims

1. A box culvert jacking device with low resistance, characterized in that: The system includes a sliding plate (1), a box culvert jacking mechanism (2), a box culvert (3), and a soil cutting mechanism (4). The sliding plate (1) is equipped with the box culvert jacking mechanism (2). The box culvert (3) is placed on the sliding plate (1) and is jacked by the box culvert jacking mechanism (2). The rear end of the box culvert (3) is equipped with the soil cutting mechanism (4). The soil cutting mechanism (4) includes a cutting frame (41), a support (42), a motor (43), and a spiral auger blade (44). The cross-section of the cutting frame (41) matches the rear cross-section of the box culvert (3). The inner side of the rear end of the side wall of the cutting frame (41) is equipped with a guide slope (45). The support (42) is provided inside the cutting frame (41). The motor (43) is provided on the support (42). The spiral auger blade (44) is provided on the rotating shaft of the motor (43).

2. The box culvert jacking device with low resistance as described in claim 1, characterized in that: The bracket (42) includes a motor protective shell (421) and a support body (422) evenly spaced in a circular shape on the motor protective shell (421). The rear end of the support body (422) is provided with a cutting edge (423). The motor protective shell (421) contains a motor (43).

3. The box culvert jacking device with low resistance as described in claim 1, characterized in that: The box culvert jacking mechanism (2) includes several traction mechanisms (22), two wire rope storage components (23), two wire ropes (24), a hanger (25), and two wire rope guide wheels (21). The front end of the sliding plate (1) is provided with a traction mechanism (22) and a wire rope storage component (23) traction by the traction mechanism (22). The rear end of the sliding plate (1) is provided with a wire rope guide wheel (21) corresponding to the wire rope storage component (23). A wire rope (24) connected to the hanger (25) is provided on each pair of corresponding wire rope storage components (23) and wire rope guide wheels (21).

4. A box culvert jacking device with low resistance as described in claim 3, characterized in that: The wire rope storage assembly (23) includes an upper seat (231), a lower seat (232), a plurality of upper guide wheels (233) and a plurality of lower guide wheels (234). The upper seat (231) is provided with upper guide wheels (233) arranged in a row and located on the lower side of the wire rope (24). The lower seat (232) is provided with lower guide wheels (234) arranged in a row and located on the upper side of the wire rope (24). The lower guide wheels (234) and the upper guide wheels (233) are staggered.

5. A box culvert jacking device with low resistance as described in claim 3, characterized in that: The number of traction mechanisms (22) is two, and the two traction mechanisms (22) are respectively connected to two wire rope storage components (23).

6. A box culvert jacking device with low resistance as described in claim 3, characterized in that: The traction mechanism (22) includes a gantry frame (221), a push hydraulic cylinder (222), a traction wire rope (223), a fixed pulley block (224), a movable pulley block (225), and a movable guide wheel (226). The gantry frame (221) is provided with a fixed pulley block (224) and a push hydraulic cylinder (222). The piston rod of the push hydraulic cylinder (222) is provided with a movable guide wheel (226). The traction wire rope (223) is wound around the fixed pulley block (224) and the movable pulley block (225). One end of the traction wire rope (223) is fixedly connected to the wheel frame of the fixed pulley block (224), and the other end passes through the lower end of the movable guide wheel (226) and is fixedly connected to the gantry frame (221).

7. A box culvert jacking device with low resistance as described in claim 1, characterized in that: The hanging component (25) includes a slide (251) and a plurality of top seats (252) provided on the slide (251).

8. A box culvert jacking device with low resistance as described in claim 7, characterized in that: Both ends of the slide (251) are provided with sliding mechanisms (5), and the slide plate (1) is provided with inclined guide rails (6) that correspond to and cooperate with the sliding mechanisms (5).

9. A box culvert jacking device with low resistance as described in claim 8, characterized in that: The sliding mechanism (5) includes a mounting base (51). The lower end of the mounting base (51) is provided with a mounting inclined surface (52) parallel to the inclined guide rail (6). The mounting inclined surface (52) is provided with two front and rear moving wheels (53) resting on the corresponding inclined guide rail (6). The upper end of the mounting base (51) is provided with two front and rear sliding rods (54) passing through the slide block (251). The upper end of each sliding rod (54) is provided with an anti-detachment body (55). A spring (56) is sleeved on each sliding rod (54) between the mounting base (51) and the slide block (251).

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