Roadbed structure cavity filling device

Abstract

The invention provides a roadbed structure cavity filling device, and belongs to the technical field of roadbed structure cavity filling devices, the roadbed structure cavity filling device structurally comprises a moving vehicle, a lifting arm is vertically arranged on the left side face of the moving vehicle, and a filling construction part is vertically arranged at the lifting end of the lifting arm; one end of the filling construction part is connected with a movable vehicle, the other end of the filling construction part is connected with a high polymer grouting machine and an air adding pump which are fixedly arranged on the movable vehicle, and a scanner used for scanning a roadbed cavity is downwards arranged on the inner side of the upper end of the filling construction part. And operation is easy and convenient, time and labor are saved, and the construction efficiency is high.

Description

Technical Field

[0001] The invention relates to a roadbed structure cavity filling device, belonging to the technical field of roadbed structure cavity filling devices. Background Art

[0002] The roadbed structure cavity refers to the hollow or void area formed inside the roadbed due to various reasons.

[0003] During the construction of the roadbed structure cavity, it is necessary to first drill a hole leading to the roadbed bottom cavity on the top surface of the roadbed, and the hole needs to be cleaned so that the pipe of the polymer grouting machine can smoothly pass through the hole to reach the roadbed bottom cavity to inject polyurethane mixed with air for foaming and expansion to fill the cavity and provide support. Generally, several such holes need to be drilled above the roadbed cavity, and it is very troublesome to change the equipment, which is time-consuming and labor-intensive. In addition, because the polymer grouting machine does not have an auxiliary air injection function, the efficiency of the polyurethane mixed with the air in the cavity to foam and expand is obviously insufficient, which affects the foaming and expansion speed of the polyurethane and the filling efficiency is low. In view of the above shortcomings, the present invention proposes a roadbed structure cavity filling device. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a roadbed structure cavity filling device to solve the existing problems.

[0005] To achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a roadbed structure cavity filling device, the structure of which includes a mobile vehicle, and a lifting arm is vertically provided on the left side of the mobile vehicle, and a filling construction unit is vertically provided on the lifting end of the lifting arm, the other end of the filling construction unit is respectively connected to a polymer grouting machine and an air pump for being fixed on the mobile vehicle, a scanner for scanning the roadbed cavity is provided on the inner side of the upper end of the filling construction unit facing downward, and a control display electrically connected to the filling construction unit, the polymer grouting machine, the air pump, and the scanner is provided on the mobile vehicle; The backfill construction part includes a horizontal frame, and a drilling rod group is vertically sleeved on the horizontal frame, and a bracket is provided on the top surface of the horizontal frame. A material injection pipe mechanism fixedly mounted on the bracket is inserted from top to bottom in the middle of the drilling rod group. A gap is left between the inner wall of the through hole in the middle of the drilling rod group and the pipe wall of the material injection pipe mechanism to form an annular air flow channel. An air injection pipe fitting is inserted into the left side of the top surface of the annular air flow channel. A drill bit is lifted and sleeved on the bottom surface of the drilling rod group, and the middle of the top surface of the drill bit is fixedly connected to the bottom surface of the material injection pipe mechanism. A motor is engaged with the right side of the upper end of the drilling rod group for transmission. The descent of the injection pipe mechanism drives the drill bit to slide down the bottom surface of the injection pipe mechanism, so that an annular opening is formed at the lower end of the annular air flow channel for the injection pipe mechanism and the air injection pipe to inject polymer and add air into the roadbed cavity.

[0006] A further improvement is that the drilling rod group includes a spiral drill rod, and the upper end of the spiral drill rod is respectively embedded with a first bearing and a first gear disc, and a through hole for the injection pipe is opened through the middle of the top surface of the spiral drill rod, and the motor is provided with a driving gear that meshes with the first gear disc for transmission.

[0007] A further improvement is that a plurality of drill bit lifting slots and a plurality of injection head retraction slots are alternately provided on the lower end wall of the injection pipe through hole in a circular array, each drill bit lifting slot is arc-shaped, and each injection head retraction slot is a sloped slot.

[0008] A further improvement is that the injection pipe mechanism includes a lifting seat, and an injection pipe fitting is vertically sleeved on the lifting seat, and the lower end of the injection pipe fitting is connected to a plurality of injection swing head groups in a circular array for movably clamping in the retraction sleeve groove of the injection head, the top of the injection pipe fitting is connected to a rotary joint, and the rotary joint is connected to an injection hose for communicating with a polymer grouting machine, and two telescoping devices fixed on the bracket are provided on the left and right sides of the top surface of the lifting seat.

[0009] A further improvement is that the injection pipe fitting includes an injection pipe body, and an injection channel is provided in the middle of the top surface of the injection pipe body, and a plurality of cavities are provided in a circular array on the lower end of the pipe body of the injection pipe body for storing the injection swing head group after retraction, and a discharge hole is provided between each of the cavities and the injection channel, and a second bearing for being mounted on the lifting seat is embedded in the upper end of the pipe body of the injection pipe body.

[0010] A further improvement is that each of the injection swing head groups includes an articulated seat, and an injection head is hinged on the articulated seat, and a sleeve at the hinge between the articulated seat and the injection head is provided with a return spring for providing an upward swinging thrust to the injection head, and a discharge hose for communicating with the discharge hole is connected to the injection head.

[0011] A further improvement is that the gas injection pipe includes an L-shaped support, and an L-shaped gas filling pipe is provided on the L-shaped support, and the lower end of the L-shaped gas filling pipe extends to the inner side of the annular air flow channel, and the other end of the L-shaped gas filling pipe is connected to a gas filling hose for connecting to the gas pump.

[0012] A further improvement is that the drill bit component includes a drill bit body, and a plurality of lifting slide columns for movably inserting into the drill bit lifting slot are arranged in a ring array on the circumference of the top surface of the drill bit body.

[0013] A further improvement is that the annular air flow channel is formed by the injection tube body movably penetrating into the middle part of the injection tube through hole, and the inner diameter of the injection tube through hole is 2 cm larger than the outer diameter of the injection tube body.

[0014] As a further improvement, the mobile vehicle, lifting arm, polymer grouting machine, air pump, scanner and control display are all existing technologies, and their structures are not described in detail here.

[0015] A further improvement is that the polymer grouting machine is filled with polyurethane raw materials.

[0016] The beneficial effects of the present invention are: The present invention provides a roadbed structure cavity filling device, which is composed of a filling construction part consisting of a cross frame, a perforated drill rod group, a bracket, a material injection pipe mechanism, an annular air flow channel, an air injection pipe, a drill bit, a motor and an annular opening, and a structural combination design of a polymer grouting machine, an air pump, a scanner, a control display on a mobile vehicle and a lifting arm, to form a roadbed structure cavity filling device. The filling device integrates drilling, grouting and air filling. It adopts the method of drilling first, and after the perforated drill rod group and the drill bit are driven by a motor to drill the hole, it does not need to be pulled out, and the filling device can be directly used. When the drilling rod group and the drill bit are rotating, the drill bit is pushed down by the injection pipe mechanism to open the annular opening, so that the lower end of the injection pipe mechanism is connected with the cavity of the roadbed structure, and the polyurethane raw material is injected in a rotating manner. At the same time, air is added to the cavity of the roadbed structure through the gas injection pipe, the annular air flow channel, and the gas channel established by the annular opening, so that the polyurethane raw material and air are mixed and quickly foamed and expanded to fill and support, realizing the drilling and filling in one step, without the need for multiple equipment replacement operations, simple operation, time-saving and labor-saving, and high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a roadbed structure cavity filling device according to the present invention; Figure 2 This is a structural diagram of the filling construction part of the present invention; Figure 3 This is a structural diagram of the drilling rod assembly of the present invention; Figure 4 This is a schematic diagram of the bottom surface structure of the injection pipe through hole of the present invention; Figure 5 This is a schematic diagram of the injection pipe structure of the present invention; Figure 6 This is a schematic diagram of the injection pipe structure of the present invention; Figure 7 This is a structural diagram of the injection swing head group of the present invention; Figure 8 This is a schematic diagram of the structure of the gas injection pipe of the present invention; Figure 9 This is a schematic diagram of the top surface structure of the drill bit of the present invention; Figure 10 For the present invention Figure 2 A magnified schematic diagram of part A in FIG; Figure 11 For the present invention Figure 2 Enlarged schematic diagram of part B in FIG. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figures 1-11 The present invention provides a roadbed structure cavity filling device: its structure includes a mobile vehicle 1, and a lifting arm 2 is vertically arranged on the left side of the mobile vehicle 1, and a filling construction part 3 is vertically arranged on the lifting end of the lifting arm 2, and the other end of the filling construction part 3 is respectively connected to a polymer grouting machine 4 and an air pump 5 for being fixed on the mobile vehicle 1, and a scanner 6 for scanning the roadbed cavity is downwardly arranged on the inner side of the upper end of the filling construction part 3, and a control display 7 electrically connected to the filling construction part 3, the polymer grouting machine 4, the air pump 5, and the scanner 6 is provided on the mobile vehicle 1, and the filling construction part 3 includes a cross frame 31, and a drilling rod group 32 is vertically sleeved on the cross frame 31, and a bracket 33 is provided on the top surface of the cross frame 31, and the middle part of the drilling rod group 32 is raised from the top. An injection pipe mechanism 34 fixed on the bracket 33 is inserted downwardly, and a gap is left between the inner wall of the through hole in the middle of the drilling rod group 32 and the pipe wall of the injection pipe mechanism 34 to form an annular air flow channel 35. An air injection pipe fitting 36 is inserted into the left side of the top surface of the annular air flow channel 35. A drill bit 37 is provided on the bottom lifting sleeve of the drilling rod group 32, and the middle part of the top surface of the drill bit 37 is fixedly connected to the bottom surface of the injection pipe mechanism 34. A motor 38 is engaged and driven on the right side of the upper end of the drilling rod group 32. The drill bit 37 is driven to slide down the bottom surface of the injection pipe mechanism 34 through the descent of the injection pipe mechanism 34, so that an annular opening 39 is formed at the lower end of the annular air flow channel 35 for enabling the injection pipe mechanism 34 and the air injection pipe fitting 36 to inject polymer and add air into the roadbed cavity.

[0020] The drilling rod group 32 includes a spiral drill rod 321, and the upper end of the rod body of the spiral drill rod 321 is respectively embedded with a first bearing 322 and a first gear disc 323, and a filling pipe through hole 324 is opened through the middle of the top surface of the spiral drill rod 321. The motor 38 is provided with a driving gear that meshes with the first gear disc 323 for transmission.

[0021] A plurality of drill bit lifting slots 3241 and a plurality of injection head retraction slots 3242 are alternately provided on the lower end wall of the injection tube through hole 324 in a circular array. Each drill bit lifting slot 3241 is arc-shaped, and each injection head retraction slot 3242 is a sloped slot.

[0022] The injection pipe mechanism 34 includes a lifting seat 341, and an injection pipe fitting 342 is vertically sleeved on the lifting seat 341, and the lower end of the injection pipe fitting 342 is connected in a circular array with multiple injection swing head groups 343 for movably clamping in the injection head retraction sleeve groove 3242, the top of the injection pipe fitting 342 is connected to a rotary joint 344, and the rotary joint 344 is connected to an injection hose 346 for communicating with the polymer grouting machine 4, and two telescoping devices 345 fixed on the bracket 33 are provided on the left and right sides of the top surface of the lifting seat 341.

[0023] The injection pipe 342 includes an injection pipe body 3421, and an injection channel 3422 is opened in the middle of the top surface of the injection pipe body 3421, and a plurality of cavities 3423 for retracting and storing the injection swing head group 343 are opened in a circular array on the lower end of the pipe body of the injection pipe body 3421. Each of the cavities 3423 is connected to the injection channel 3422 and an outlet hole 3424 is opened. The upper end of the pipe body of the injection pipe body 3421 is embedded with a second bearing 3425 for being mounted on the lifting seat 341.

[0024] Each of the injection swing head groups 343 includes a hinged seat 3431, and an injection head 3432 is hinged on the hinged seat 3431, and a reset spring 3433 is provided at the hinged joint between the hinged seat 3431 and the injection head 3432 for providing an upward swinging thrust to the injection head 3432. The injection head 3432 is connected to a discharge hose 3434 for communicating with the discharge hole 3424.

[0025] The gas injection pipe 36 includes an L-shaped support 361, and an L-shaped gas filling pipe 362 is provided on the L-shaped support 361, and the lower end of the L-shaped gas filling pipe 362 extends to the inner side of the annular air flow channel 35, and the other end of the L-shaped gas filling pipe 362 is connected to a gas filling hose 363 for communicating with the gas pump 5.

[0026] The drill bit component 37 includes a drill bit body 371 , and a plurality of lifting slide posts 372 for movably inserting into the drill bit lifting slot 3241 are arranged in a circular array around the top surface of the drill bit body 371 .

[0027] The annular air flow channel 35 is formed by the injection tube body 3421 movably penetrating into the middle of the injection tube through hole 324 , and the inner diameter of the injection tube through hole 324 is 2 cm larger than the outer diameter of the injection tube body 3421 .

[0028] Working principle: During construction, the mobile vehicle 1 is used to move the equipment to the upper side of the cavity of the roadbed structure, and the cavity position is accurately found by scanning with the scanner 6, and then the filling construction part 3 is driven down by the lifting arm 2. During this process, the motor 38 drives the drilling rod group 32 to rotate. Due to the sleeve effect of the lifting slide column 372 and the drill bit lifting slide groove 3241, the drill bit body 371 will also be rotated in conjunction to drill holes, and the drill bit part 37 is fixedly connected to the injection pipe part 342, and the injection pipe part 342 will also rotate in conjunction, but Under the action of the rotary joint 344, the injection hose 346 will not rotate in conjunction. It should also be noted that when drilling, the injection pipe mechanism 34 will lift the drill bit 37 to eliminate the annular opening 39, so that the base soil during drilling will not pass through the annular opening 39 into the annular air flow channel 35 to cause blockage, and cause blockage and jamming of each injection swing head group 343. When the drill bit 37 and the lower end of the drilling drill rod group 32 descend and drill into the cavity of the roadbed structure, backfilling is then carried out.

[0029] Backfilling treatment, while the drilling rod group 32 is rotating continuously, the telescopic device 345 is extended to make the injection pipe 342 descend in the injection pipe through hole 324, pushing the drill bit 37 to descend and open the annular opening 39, while the drill bit 37 and the drilling rod group 32 will not be completely separated. At this time, the injection heads 3432 of each injection swing head group 343 will swing to the upper right under the action of the return spring 3433 to form a horizontal state, and each injection swing head group 343 is in a rotating state. Then, the high polymer grouting machine 4 is used to inject the polyurethane raw material under high pressure. The polyurethane raw material passes through the injection hose 346. , the injection channel 3422, the discharge hole 3424, and the discharge hose 3434 are ejected from the injection head 3432 and filled into the cavity of the roadbed structure in a rotating manner. The air pump 5 is used to add air synchronously. The gas is blown into the upper end of the annular air flow channel 35 through the air hose 363 and the L-shaped air pipe 362, and blown out from the annular opening 39, so that the air is mixed with the polyurethane raw material injected into the cavity of the roadbed structure to make it foam and expand quickly for filling support. After completion, the injection pipe mechanism 34 will lift the drill bit 37 again to eliminate the annular opening 39, and the equipment can be shifted to perform drilling and filling operations again.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A roadbed structure cavity filling device, characterized by: Its structure includes a mobile vehicle, and a lifting arm is vertically provided on the left side of the mobile vehicle, and a filling construction part is vertically provided on the lifting end of the lifting arm. The other end of the filling construction part is respectively connected to a polymer grouting machine and an air pump for being fixed on the mobile vehicle. A scanner for scanning the roadbed cavity is provided on the inner side of the upper end of the filling construction part facing downward. The mobile vehicle is provided with a control display electrically connected to the filling construction part, the polymer grouting machine, the air pump, and the scanner. The backfill construction part includes a horizontal frame, and a drilling rod group is vertically sleeved on the horizontal frame, and a bracket is provided on the top surface of the horizontal frame. A material injection pipe mechanism fixedly mounted on the bracket is inserted from top to bottom in the middle of the drilling rod group. A gap is left between the inner wall of the through hole in the middle of the drilling rod group and the pipe wall of the material injection pipe mechanism to form an annular air flow channel. An air injection pipe fitting is inserted into the left side of the top surface of the annular air flow channel. A drill bit is lifted and sleeved on the bottom surface of the drilling rod group, and the middle of the top surface of the drill bit is fixedly connected to the bottom surface of the material injection pipe mechanism. A motor is engaged with the right side of the upper end of the drilling rod group for transmission. The descent of the injection pipe mechanism drives the drill bit to slide down the bottom surface of the injection pipe mechanism, so that an annular opening is formed at the lower end of the annular air flow channel for the injection pipe mechanism and the air injection pipe to inject polymer and add air into the roadbed cavity.

2. A roadbed structure cavity filling device according to claim 1, characterized in that: The drilling rod group includes a spiral drill rod, and the upper end of the spiral drill rod is respectively embedded with a first bearing and a first gear disk, and a through hole for the injection pipe is opened through the middle of the top surface of the spiral drill rod. The motor is provided with a driving gear that meshes with the first gear disk for transmission.

3. The roadbed structure cavity filling device according to claim 2, characterized in that: A plurality of drill bit lifting chutes and a plurality of injection head retraction sleeve grooves are alternately provided on the hole wall at the lower end of the injection pipe through hole in an annular array. Each drill bit lifting chute is arc-shaped, and each injection head retraction sleeve groove is a sloped groove.

4. The roadbed structure cavity filling device according to claim 3, characterized in that: The injection pipe mechanism includes a lifting seat, and an injection pipe fitting is vertically sleeved on the lifting seat, and the lower end of the injection pipe fitting is connected to a plurality of injection swing head groups in a circular array for movably clamping in the retraction sleeve groove of the injection head. The top of the injection pipe fitting is connected to a rotary joint, and the rotary joint is connected to an injection hose for communicating with a polymer grouting machine. Two telescoping devices fixed on the bracket are provided on the left and right sides of the top surface of the lifting seat.

5. The roadbed structure cavity filling device according to claim 4, characterized in that: The injection pipe fitting includes an injection pipe body, and an injection channel is opened in the middle of the top surface of the injection pipe body, and a plurality of cavities for storing the injection swing head group after retraction are opened in a circular array on the lower end of the pipe body of the injection pipe body, and each of the cavities is connected to the injection channel and opened with a discharge hole. The upper end of the pipe body of the injection pipe body is embedded with a second bearing for being mounted on the lifting seat.

6. The roadbed structure cavity filling device according to claim 5, characterized in that: Each of the injection swing head groups includes an articulated seat, and an injection head is hinged on the articulated seat, and a sleeve at the hinge between the articulated seat and the injection head is provided with a return spring for providing an upward swinging thrust to the injection head, and a discharge hose is connected to the injection head for communicating with the discharge hole.

7. The roadbed structure cavity filling device according to claim 6, characterized in that: The gas injection pipe includes an L-shaped support, and an L-shaped gas filling pipe is provided on the L-shaped support, and the lower end of the L-shaped gas filling pipe extends to the inner side of the annular air flow channel, and the other end of the L-shaped gas filling pipe is connected to a gas filling hose for communicating with an air pump.

8. The roadbed structure cavity filling device according to claim 7, characterized in that: The drill bit component comprises a drill bit body, and a plurality of lifting slide columns for movably inserting into the drill bit lifting slide groove are arranged in a ring array on the circumference of the top surface of the drill bit body.

9. The roadbed structure cavity filling device according to claim 8, characterized in that: The annular air flow channel is formed by the injection tube body movably penetrating into the middle part of the injection tube through hole, and the inner diameter of the injection tube through hole is 2 cm larger than the outer diameter of the injection tube body.

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