Active pressurized perfusion device for concrete layer of ballastless track

Abstract

The present application relates to a kind of active pressurized injection devices of concrete layer of ballastless track, including walking support, walking support adopts gantry structure, and the bottom end of the two sides of walking support is equipped with walking wheel, and the top of walking support is connected with hopper by hopper support, and the discharge port of the bottom end of hopper is connected with the inlet of concrete pressurized pump by first material pipe, and the outlet of concrete pressurized pump is connected with one end of second material pipe, and the other end of second material pipe is used as discharge port and is provided with the clamping mechanism for being clamped with ballastless track slab injection port, and the injection quality of the injection device using the present application is good.

Description

Technical Field

[0001] This invention relates to the field of high-speed railway paving construction technology, specifically to an active pressure grouting device for ballastless track concrete layers. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] During the ballastless track laying process after the completion of high-speed railway bridge construction, self-compacting concrete is used to fill the gap between the ballastless track and the slab base. The addition of self-compacting concrete not only ensures the integrity of the track structure but also provides a solid foundation for the subsequent installation of rails and the opening of the high-speed railway. However, the current construction of the self-compacting concrete layer for ballastless track uses a pumped self-compacting concrete pouring process. Due to the large construction mileage and the limited relocation of large pumping equipment in certain locations, this leads to low construction efficiency and increased operational difficulty.

[0004] To address the aforementioned practical engineering problems, some self-compacting concrete pouring devices have been developed. For example, utility model patent CN 204282139U discloses a self-propelled ballastless track self-compacting concrete pouring hopper. However, due to the non-adjustable height of its support frame and the inability to move the hopper left or right, it is impossible to accurately adjust the specific pouring position. Furthermore, the device involves multiple transfers of the self-compacting concrete material, and the waiting time for the self-compacting concrete in the constant pressure hopper to reach the pouring height may be too long. This can easily lead to air bubbles during pouring, which to some extent affects the performance of the self-compacting concrete material and makes it unsuitable for pouring self-compacting concrete layers under ballastless track slabs. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an active pressure injection device and working method for ballastless track concrete layer, which overcomes the defects of the current injection device.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] An embodiment of the present invention provides an active pressurized grouting device for ballastless track concrete layer, including a traveling support frame. The traveling support frame adopts a gantry structure. The bottom ends of both sides of the traveling support frame are provided with traveling wheels. The top of the traveling support frame is connected to a hopper frame via a hopper support. The discharge port at the bottom end of the hopper is connected to the inlet of a concrete pressurized pump via a first material pipe. The outlet of the concrete pressurized pump is connected to one end of a second material pipe. The other end of the second material pipe serves as a discharge port and is provided with a locking mechanism for locking with the grouting port of the ballastless track slab.

[0008] Optionally, the hopper support is connected to the top of the walking support via a walking mechanism, and a first locking mechanism is provided between the walking mechanism and the walking support. The hopper support can travel on the top of the walking support, and the traveling direction is perpendicular to the extension direction of the ballastless track slab.

[0009] Furthermore, the concrete pressurization pump is fixed to the hopper support.

[0010] Optionally, the hopper support adopts a rectangular frame structure, and the traveling mechanism includes a slot and a pulley. The hopper support is provided with multiple slots, each with a slot. The slots are fastened to the traveling support through the slots, and the top of the slots is provided with a pulley that mates with the top surface of the traveling support.

[0011] Optionally, the first locking mechanism is provided on the slot, including a threaded locking member and a support pad disposed opposite to each other. The threaded locking member is threadedly connected to the slot, and the support pad is fixed on the groove surface of the slot. The threaded locking member and the support pad can jointly clamp the traveling bracket to fix the traveling bracket and the hopper bracket.

[0012] Optionally, the hopper support is provided with multiple support grooves, the hopper is fixedly connected to multiple support beams, and the bottom end of the support beam is inserted into the support groove of the support groove.

[0013] Optionally, the bottom of the traveling support is provided with guide wheels for engaging with the ballastless track slab base.

[0014] Optionally, the traveling support includes a top support, with vertical supports at both ends of the top support. The top support is connected to the hopper support, and the bottom of the vertical supports is provided with traveling wheels. The vertical support adopts a telescopic mechanism, including a first support part and a second support part that are telescopically connected, and a second locking mechanism is provided between the first support part and the second support part.

[0015] Furthermore, the vertical support is equipped with tie rods.

[0016] Optionally, both the first and second feed tubes are made of corrugated hoses.

[0017] Optionally, the snap-fit ​​mechanism includes an inner tube and an outer tube sleeved outside the inner tube. The inner tube is a braided flexible tube, and the outer tube is a rigid tube. The top ends of both the braided flexible tube and the rigid tube are fixed to the discharge end of the second material tube. The rigid tube has multiple snaps on its wall, and the snaps are slidably connected by snap blocks. The snap blocks are elastically connected to the wall of the rigid tube.

[0018] Optionally, the outer surface of the rigid tube is provided with a handle.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The pressurized grouting device of the present invention is equipped with a concrete pressurized pump, which can increase the grouting pressure of concrete, thereby shortening the grouting time and reducing the air bubbles generated during the grouting process. Compared with traditional grouting devices, the grouting effect is more complete, improving the quality of grouting construction. At the same time, the setting of the snap-fit ​​mechanism avoids the problem of the second material pipe separating from the grouting port when the grouting pressure is increased, realizing grouting under higher pressure.

[0021] 2. In the pressurized grouting device of the present invention, the hopper support can travel along the top of the traveling support, and the vertical support is a telescopic mechanism, so that the horizontal and vertical positions of the hopper can be adjusted, and the specific position of the hopper grouting construction can be adjusted, thereby improving the applicability of the entire pressurized grouting device.

[0022] 3. The pressurized grouting device of the present invention includes an outer tube and an inner tube. The inner tube is a braided flexible tube, and the outer tube is a rigid tube. A locking block is elastically connected to the inner tube. During grouting, the braided flexible tube expands and applies a pushing force to the locking block. The locking block extends against the elastic force and locks the grouting port, thus preventing the material tube from detaching from the grouting port due to excessive grouting pressure. Moreover, the pressure of grouting is used to automatically lock the locking block at the grouting port, eliminating the need for manual support to keep the discharge end of the discharge tube inside the grouting port. This makes operation more convenient, reduces the labor intensity of construction, and avoids threats to the personal safety of construction personnel. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0025] Figure 2 This is a side view of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the walking support frame in Embodiment 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the first support portion of Embodiment 1 of the present invention;

[0028] Figure 5 This is a schematic diagram of the second support section in Embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the hopper support in Embodiment 1 of the present invention;

[0030] Figure 7 This is a schematic diagram of the active pressure hopper mechanism in Embodiment 1 of the present invention;

[0031] Figure 8 This is a schematic diagram of the snap-fit ​​mechanism in Embodiment 1 of the present invention;

[0032] Among them, 1-1. Ballastless track slab base, 1-2. Mold, 1-3. Ballastless track slab, 1-4. Traveling support, 1-5. Hopper support, 1-6. Active pressurizing hopper mechanism;

[0033] 2-1. Horizontal support; 2-2. First support section; 2-3. Second support section;

[0034] 3-1. Pull rod; 3-2. Second locking hole;

[0035] 4-1. Guide wheel, 4-2. Traveling wheel, 4-3. Locking pin;

[0036] 5-1. Slotted component; 5-2. Beam; 5-3. Support slotted component; 5-4. Support plate; 5-5. Support pad; 5-6. Pulley; 5-7. Locking bolt;

[0037] 6-1. Hopper; 6-2. Support beam; 6-3. Concrete pressurization pump; 6-4. Corrugated hose; 6-5. Snap-fit ​​mechanism; 7-1. Handle; 7-2. Locking block; 7-3. Rigid pipe; 7-4. Braided hose. Detailed Implementation

[0038] Example 1

[0039] This embodiment provides an active pressure grouting device for ballastless track concrete layers, such as... Figures 1-2 As shown, the system includes a traveling support 1-4, which adopts a gantry structure and is used to span across both sides of the ballastless track slab 1-3, the template 1-2, and the ballastless track slab base 1-1. The bottom of the traveling support 1-4 is equipped with traveling wheels, allowing it to travel along the extension direction of the ballastless track slab. The top of the traveling support is equipped with a hopper support 1-5, which is fixed with an active pressurizing hopper mechanism 1-6. The active pressurizing hopper mechanism includes a hopper 6-1 and four corner-fixed support beams 6-2. The hopper 6-1 is used to hold the material to be poured. The concrete hopper has a discharge port at the bottom, which is equipped with a valve. The valve is connected to one end of the first discharge pipe, and the other end of the first discharge pipe is connected to the inlet of the concrete pressure pump 6-3. The outlet of the concrete pressure pump 6-3 is connected to one end of the second discharge pipe, which serves as the discharge end and is equipped with a clamping mechanism 6-5. Both the first and second discharge pipes are made of corrugated hoses 6-4. The clamping mechanism 6-5 is used to clamp and fix the discharge end of the second discharge pipe to the grouting port on the ballastless track slab to prevent the discharge end of the second discharge pipe from coming off the grouting port during the grouting process.

[0040] The traveling support frame 1-4 adopts a gantry frame structure, which includes two inverted U-shaped frames. A connecting beam is provided between the two inverted U-shaped frames to connect them into a whole.

[0041] like Figures 3-5 As shown, the inverted U-shaped frame includes a horizontal support 2-1 and vertical supports fixed at both ends of the horizontal support. The bottom end of the vertical support is provided with a traveling wheel. Through the traveling wheel 4-2, the entire traveling support can travel along the extension direction of the ballastless track slab 1-3.

[0042] Furthermore, in order to guide the movement of the traveling support, the bottom of the vertical support is also provided with a guide wheel 4-1. The axis of the guide wheel 4-1 is set vertically, and the guide wheel 4-1 can contact the side of the ballastless track slab base 1-1. Through the cooperation between the guide wheel 4-1 and the side of the ballastless track slab base 1-1, the movement of the traveling support 1-4 is guided.

[0043] Furthermore, in order to adjust the height of the hopper, the vertical support adopts a telescopic mechanism, including a first support part 2-2 and a second support part 2-3 that are telescopically connected. The top end of the first support part 2-2 is fixedly connected to the end of the horizontal support 2-1, and the bottom end of the first support part 2-2 is inserted into the interior of the second support part 2-3. The first support part 2-2 and the second support part 2-3 can slide relative to each other to achieve a telescopic connection. The bottom end of the second support part 2-3 is connected to a traveling wheel 4-2 and a guide wheel 4-1.

[0044] A second locking mechanism is provided between the first support part 2-2 and the second support part 2-3. The second locking mechanism adopts a locking pin 4-3. The top of the second support part 2-3 is provided with a first locking hole for the locking pin 4-3 to pass through. The first support part is provided with a plurality of second locking holes 3-2 that match the locking pin along the axial direction. The pin passes through the first locking hole and the second locking hole 3-2 to lock and fix the first support part 2-2 and the second support part 2-3. The length of the vertical support can be adjusted by the pin cooperating with different second locking holes 3-2.

[0045] The first support part 2-2 is rotatably connected to the pull rod 3-1 through the hinge seat. When the pull rod 3-1 is rotated to the horizontal state, it is convenient for construction personnel to drive the walking support 1-4 to move. When the grouting device is not in use, the pull rod 3-1 is rotated to the vertical state, reducing the space occupied by the entire grouting device.

[0046] like Figure 6 As shown, the horizontal support is provided with a hopper support 1-5. The hopper support adopts a rectangular frame structure and is surrounded by four beams 5-2. The front and rear sides of the hopper support 1-5 are connected to the horizontal support through a traveling mechanism. The hopper support 1-5 can move along the horizontal support, and the direction of movement is perpendicular to the extension direction of the ballastless track slab 1-3.

[0047] In this embodiment, the walking mechanism includes a slot 5-1 and a pulley 5-6. The front and rear sides of the hopper support 1-5 are provided with multiple slots 5-1. Preferably, three slots 5-1 are provided. The slot 5-1 has an open slot facing downward. The slot 5-1 is fastened to the horizontal support 2-1 through the slot. The top of the slot is provided with a pulley 5-6 that cooperates with the top surface of the horizontal support 2-1. The movement of the hopper support 1-5 along the top surface of the horizontal support 2-1 is realized by the pulley 5-6.

[0048] Furthermore, a first locking mechanism is provided between the slot 1-5 and the horizontal support. The first locking mechanism is used to lock and fix the slot to the horizontal support, thereby realizing the locking and fixing of the hopper support and the horizontal support.

[0049] In this embodiment, the first locking mechanism is installed on the slot 5-1, including a support pad 5-5 and a threaded locking component arranged opposite to each other. The support pad 5-5 is fixed on one side of the slot and fits against one side of the horizontal bracket. The threaded locking component is a locking bolt 5-7. The locking bolt 5-7 is threadedly connected to the slot 5-1 and passes vertically through the other side of the slot and extends into the slot. By rotating the locking bolt 5-7, the locking bolt 5-7 can contact the other side of the horizontal bracket, thereby cooperating with the support pad to clamp the horizontal bracket, thus realizing the locking and fixing of the slot 5-1 and the horizontal bracket.

[0050] A support plate 5-4 is also welded and fixed on the hopper support 1-5. The support plate 5-4 is provided with mounting holes. The concrete pressurizing pump 6-3 is fixed on the support plate 5-4 through the mounting holes. The concrete pressurizing pump 6-3 can move synchronously with the hopper support.

[0051] The hopper support is also provided with four support slots 5-3, and the support slots 5-3 are provided with support slots with their openings facing upwards.

[0052] Correspondingly, such as Figure 7 As shown, the hopper 6-1 adopts an inverted conical structure. The top four corners of the hopper 6-1 are fixedly connected to the top of the support beam 6-2. The bottom end of the support beam 6-2 is inserted into the support groove of the corresponding support groove 5-3, thereby fixing the hopper 6-1.

[0053] Both the first and second discharge pipes are made of corrugated flexible hoses 6-4, and the adjustment of the hopper position does not hinder the feeding of the first and second discharge pipes.

[0054] like Figure 8As shown, the discharge end of the second discharge pipe is provided with a snap-fit ​​mechanism 6-5. The snap-fit ​​mechanism 6-5 includes an inner tube and an outer tube sleeved around the outer circumference of the inner tube. The outer tube is a rigid tube 7-3, such as a steel pipe. The inner tube is a braided flexible hose 7-4. The top ends of both the inner tube and the outer tube are fixedly connected to the discharge end of the second discharge pipe.

[0055] Multiple bayonets are evenly spaced along the circumference of the outer tube wall. A locking block 7-2 is slidably connected inside the bayonets. A spring is provided between the locking block 7-2 and the hole surface of the bayonet to make the locking block elastically connected to the outer tube. In the natural state, the locking block is retracted into the outer tube under the action of the spring. When concrete is poured, the concrete enters the braided hose 7-4, the braided hose 7-4 expands, pushes the locking block 7-2, and the locking block 7-2 extends after overcoming the elastic force of the spring, locking the pouring port, thereby realizing the locking and fixing of the locking mechanism and the pouring port.

[0056] By setting up the clamping mechanism 6-5, the discharge end of the discharge pipe is prevented from detaching from the grouting port due to excessive grouting pressure. Moreover, the pressure of grouting is used to automatically clamp the grouting port, eliminating the need for manual support to keep the discharge end of the discharge pipe inside the grouting port. This makes operation more convenient, reduces the labor intensity of construction, and avoids threats to the personal safety of construction personnel.

[0057] Furthermore, the outer surface of the rigid pipe is provided with a handle 7-1, which facilitates the construction personnel to insert the clamping mechanism into the injection port.

[0058] The method of using the infusion device in this embodiment is as follows:

[0059] Construction workers use a pull rod to move the traveling support to the corresponding pouring port position, remove the locking pin 4-3, and the first support part 2-2 and the second support part 2-3 move to extend and retract, adjusting the hopper to the appropriate target height. Then, the locking pin 4-3 is inserted, and the locking bolt 5-7 is removed. The hopper support 1-5 moves along the horizontal support 2-1, adjusting the horizontal position of the hopper 6-1 to the appropriate position, and then tightening the locking bolt 5-7. The construction workers use the handle 7-1 to place the clamping mechanism into the pouring port, open the valve at the outlet of the hopper 6-1, and start the concrete pressure pump 6-3. Under the action of concrete pressure, the braided hose 7-4 expands, the clamp 7-2 extends out, and clamps into the pouring port. The concrete in the hopper 6-1 enters the space between the mold 1-2 below the ballastless track slab 1-3 under the action of the concrete pressure pump 6-3, pouring the concrete layer.

[0060] After the grouting is completed, stop the concrete pressurization pump 6-3, close the valve at the discharge port of hopper 6-1, and the locking block 7-2 will retract under the action of the spring. The construction personnel can then remove the locking mechanism. At this time, the entire grouting device can be moved to the next grouting port and the same method can be used to grout the next grouting port.

[0061] The grouting device of this embodiment, by incorporating a concrete pressurization pump, increases the grouting pressure of the concrete, thereby shortening the grouting time and reducing air bubbles generated during the grouting process. Compared with traditional grouting devices, the grouting effect is more thorough, improving the quality of the grouting construction. At the same time, the snap-fit ​​mechanism avoids the problem of the second material pipe detaching from the grouting port when the grouting pressure is increased, enabling grouting under higher pressure. Furthermore, since the position of the hopper is adjustable, it is convenient for construction personnel to insert the snap-fit ​​mechanism into the grouting port, improving the applicability of the entire pressurized grouting device.

[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An active pressure grouting device for ballastless track concrete layers, characterized in that, The system includes a traveling support frame, which adopts a gantry frame structure. The traveling support frame has traveling wheels at both bottom sides. The top of the traveling support frame is connected to a hopper via a hopper support frame. The discharge port at the bottom of the hopper is connected to the inlet of a concrete pressurization pump via a first material pipe. The outlet of the concrete pressurization pump is connected to one end of a second material pipe. The other end of the second material pipe serves as the discharge port and is equipped with a locking mechanism for locking with the ballastless track slab pouring port. The snap-fit ​​mechanism includes an inner tube and an outer tube sleeved outside the inner tube. The inner tube is a braided flexible tube and the outer tube is a rigid tube. The top ends of both the braided flexible tube and the rigid tube are fixed to the discharge end of the second material tube. The rigid tube has multiple snaps on its wall, and the snaps are slidably connected by snap blocks. The snap blocks are elastically connected to the wall of the rigid tube. After the concrete pressurization pump is started, the braided hose expands to allow the locking block to extend and engage with the injection port. After the injection is completed, the locking block retracts under the action of elastic force.

2. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, The hopper support is connected to the top of the walking support via a walking mechanism, and a first locking mechanism is provided between the walking mechanism and the walking support. The hopper support can move on the top of the walking support and the walking direction is perpendicular to the extension direction of the ballastless track slab.

3. The active pressure grouting device for ballastless track concrete layer as described in claim 2, characterized in that, The concrete pressurization pump is fixed to the hopper support.

4. The active pressure grouting device for ballastless track concrete layer as described in claim 2, characterized in that, The hopper support adopts a rectangular frame structure. The walking mechanism includes a slot and a pulley. The hopper support is provided with multiple slots, each with a slot. The slots are fastened to the walking support through the slots, and the top of the slots is provided with a pulley that mates with the top surface of the walking support.

5. The active pressure grouting device for ballastless track concrete layer as described in claim 4, characterized in that, The first locking mechanism is provided on the slot piece and includes a threaded locking member and a support pad arranged opposite to each other. The threaded locking member is threadedly connected to the slot piece, and the support pad is fixed on the groove surface of the slot piece. The threaded locking member and the support pad can jointly clamp the traveling bracket to fix the traveling bracket and the hopper bracket.

6. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, The hopper support is provided with multiple support grooves, and the hopper is fixedly connected to multiple support beams. The bottom end of the support beam is inserted into the support groove of the support groove.

7. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, The bottom of the walking support is provided with guide wheels for engaging with the ballastless track slab base.

8. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, The traveling support includes a top support, with vertical supports at both ends of the top support. The top support is connected to the hopper support. The bottom of the vertical support is provided with a traveling wheel. The vertical support adopts a telescopic mechanism, including a first support part and a second support part that are telescopically connected. A second locking mechanism is provided between the first support part and the second support part.

9. The active pressure grouting device for ballastless track concrete layer as described in claim 8, characterized in that, The vertical support is equipped with tie rods.

10. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, Both the first and second feed pipes are corrugated hoses.

11. The active pressure grouting device for ballastless track concrete layer as described in claim 1, characterized in that, The rigid tube has a handle on its outer surface.

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