Ballast track system for built-in pump house

Abstract

The utility model relates to a ballast track system for a built-in pump room, and relates to the field of track traffic, a prefabricated base is provided with a prefabricated groove, two groups of side wall plates are respectively arranged on two side walls in the prefabricated groove, the lower parts of the side wall plates are provided with backflow holes, the backflow holes are unidirectionally conducted from the outer sides of the side wall plates to the inner sides of the side wall plates, and the outer sides of the side wall plates are filled with railway ballasts. The sleeper is installed on the combined pump pit, the steel rail is fixed to the sleeper, the two ends of the adjustable pre-pressing sliding device are connected with the sleeper and the side wall plate respectively, and acting force towards the outer side of the side wall plate is applied to the side wall plate. The structure has the beneficial effects that the problems that the bearing capacity of a monolithic track bed structure is reduced, and the stability and durability are seriously influenced by grooving in the center of the track bed are solved, and the problems of strength and durability such as stripping, chipping and fragmentation of the monolithic track bed in a water storage environment are solved. The railway ballast is of a discrete structure and can flexibly adapt to deformation of a lower foundation, and the disengaging condition cannot occur; the volume of the combined pump pit can be flexibly adjusted according to actual drainage requirements.

Description

Technical Field

[0001] This utility model relates to the field of rail transit, specifically to a ballast track system for a built-in pump house. Background Technology

[0002] Built-in pump station technology is a new research direction in urban rail transit engineering in recent years, focusing on pump stations between sections. It changes the traditional design approach of combining connecting passages with pump stations, helping to reduce the construction difficulty and risks of connecting passages and facilitating their role as a key control point in project progress. Because of the built-in pump station, connecting passages can be set up separately from pump stations, improving the flexibility and progress of project construction without increasing costs.

[0003] The current technical solution requires installing a built-in pump house within the overall track bed structure. Wastewater is pumped to a nearby station wastewater pump house, from which it is then discharged off the track. Installing submersible pumps within the overall track bed structure necessitates cutting grooves in the track bed to reserve space for the pumps. Various pipelines attached to the pumps require crossing the rails, cutting grooves, and drilling holes in the track bed, which has a significant negative impact on the overall track bed structure's strength, stability, and durability. During design and application, track bed cracking, breakage, or even partial failure will adversely affect the safety and comfort of train operation. Furthermore, the central drainage ditch of the built-in pump house retains water for extended periods. If this water enters the track bed structure, under the dynamic load of trains, it will cause adverse consequences such as track bed mud pumping and track bed separation from the tunnel segments. The operation of existing built-in pump rooms in some city subways shows that the grooving and drilling of the track bed reduces the surface quality of the track bed. Under the action of water flow, the concrete surface becomes loose, softened, broken, chipped, uneven, and has lost fine aggregates, which greatly weakens the strength and stability of the track structure.

[0004] Ballasted track systems possess a flexible, granular structure with abundant voids, allowing them to adapt to the effects of aquatic environments. Furthermore, the flexibility of the granular structure helps address issues such as separation and voiding between the track bed and the tunnel caused by uneven deformation of the substructure. Since the track bed itself does not use concrete, it fundamentally solves problems like loosening, spalling, and cracking that can occur in environments with long-term water accumulation within the built-in pump house. However, currently, there is no integrated pump house track design specifically for ballasted track structures.

[0005] In view of the problems and shortcomings of the existing technology, the technical problem to be solved by this utility model is as follows:

[0006] 1. Solve the problem that the load-bearing capacity, stability, and durability of the integrated track bed structure of the built-in pump house are severely affected by the slotting in the center of the track bed;

[0007] 2. To address the problem of insufficient tightness in the connection between the integrated track bed and the shield tunnel segments in the built-in pump house, which easily leads to track bed delamination in long-term water storage environments;

[0008] 3. Solve the technical problem that the volume of the integrated track bed pump room cannot be adjusted in the built-in pump room. Utility Model Content

[0009] The technical problem to be solved by this utility model is how to provide a built-in ballast track system for pump rooms, which has sufficient load-bearing capacity, stability and durability.

[0010] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A built-in ballast track system for pump rooms includes rails, sleepers, an adjustable preloading sliding device, a combined pump pit, and ballast. The combined pump pit includes a prefabricated base and side wall panels. The prefabricated base has a prefabricated groove. The side wall panels are provided in two sets, and the two sets of side wall panels are respectively installed on two side walls in the prefabricated groove. The lower part of the side wall panel has a backflow hole, which is unidirectionally oriented from the outside to the inside of the side wall panel. The outside of the side wall panel is filled with the ballast. The sleepers are installed on the combined pump pit. The rails are fixed on the sleepers. The two ends of the adjustable preloading sliding device are respectively connected to the sleepers and the side wall panels, and apply an outward force to the side wall panels.

[0011] The beneficial effects of this utility model are: 1. The adjustable preload sliding device ensures the stability of the side wall panel, and the ballast provides effective support for the sleepers, which solves the problem that the overall track bed structure of the built-in pump house has reduced load-bearing capacity, stability and durability are seriously affected by the groove in the center of the track bed.

[0012] 2. The use of a ballast track structure fundamentally solves the problems of strength and durability of the overall track bed, such as peeling, fracturing, and cracking, in a water-filled environment.

[0013] 3. The solution provided by this utility model is a ballast track bed, and the ballast is a loose structure, which can flexibly adapt to the deformation of the underlying foundation and will not cause voids; it solves the problem of insufficient tightness of the connection between the integrated track bed of the built-in pump house and the shield tunnel segment, and the easy voiding of the track bed in the long-term water storage environment.

[0014] 4. The combined pump pit has a combined structure, and the volume of the combined pump pit can be flexibly adjusted according to actual drainage needs.

[0015] Specifically, this design incorporates a modular pump pit in the middle of the track bed, providing the necessary space for pump installation. This space can be adjusted by varying the spacing between the two sets of sidewalls to accommodate pump installation and adjust the volume. The modular pump pit is connected to the drainage systems of the preceding and following normal track beds, allowing accumulated water to flow smoothly from upstream into the pit. The pumps installed in the pit then activate, draining the water and functioning as a pump house.

[0016] Ballast is filled between the outer sidewalls and the tunnel structure, serving as the foundation for supporting the sleepers. The ballast surrounds the sleepers, providing necessary vertical and lateral support to meet the operational requirements of the track system. Simultaneously, the ballast filling the outer sidewalls exerts a lateral force towards the interior of the combined pump pit. To ensure the verticality and stability of the sidewalls, a counterforce is required. Therefore, an adjustable preload sliding device is installed on the inner side of the sidewalls to provide resistance against the force directed towards the exterior of the combined pump pit.

[0017] This solution provides a built-in pump house system for ballasted track that enables comprehensive drainage across the entire track area. First, accumulated water at both ends flows into the combined pump pit via normal drainage ditches and is pumped away. Second, accumulated water within the ballast area on both sides flows into the combined pump pit through backflow holes located in the sidewalls, and is also pumped out. These backflow holes provide unidirectional drainage, allowing only water from the ballast area to flow into the combined pump pit, preventing water from the combined pump pit from flowing back into the ballast. This ensures a long-term water-free environment within the ballast area, guaranteeing the functionality and performance of the ballasted track bed.

[0018] Based on the above technical solution, the present invention can be further improved as follows.

[0019] Furthermore, the upper ends of both sidewalls are provided with grooves, and the two ends of the sleeper are respectively installed in the grooves of the two sidewalls.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the end of the sleeper is located in the groove of the side wall plate, so that both sides and the bottom of the end of the sleeper are surrounded by ballast, and the ballast provides good support for the sleeper.

[0021] Furthermore, there is a gap between the outer wall of the sleeper and the inner wall of the groove.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the two side walls and the bottom surface of the sleeper are left with a certain gap with the inner edge of the groove of the side wall plate, which provides sufficient space for the sleeper to move up and down during vehicle operation.

[0023] Furthermore, the combined pump pit also includes a waterstop. Each set of sidewall panels includes multiple unit side panels, which are arranged sequentially along the length of the precast groove. The waterstop is installed between adjacent unit side panels and between the lower end of the unit side panel and the precast groove, and is sealed by the waterstop.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the joints between the unit side plates and the joints between the unit side plates and the precast trough are sealed with waterstops to prevent water from flowing out of the combined pump pit.

[0025] Furthermore, the adjustable preload sliding device is provided at both ends of the sleeper, and the adjustable preload sliding device is provided on both sides of each end of the sleeper.

[0026] The beneficial effects of adopting the above-mentioned further scheme are as follows: Adjustable preloading sliding devices are installed at both ends of the sleeper, with two devices at each end. On the one hand, this applies an outward force to the sidewall panels, preventing the ballast from causing the sidewall panels to tilt inwards towards the combined pump pit, thus increasing structural reliability. On the other hand, by installing multiple adjustable preloading sliding devices, the sleeper is subjected to uniform force, which can stably support the rail.

[0027] Furthermore, the adjustable preload sliding device includes a telescopic mechanism, one end of which is fixedly connected to the sleeper, and the other end of which abuts against the side wall plate.

[0028] The beneficial effects of adopting the above-mentioned further solution are: the adjustable pre-pressure sliding device adopts a telescopic mechanism with adjustable length. By extending and retracting the adjustable pre-pressure sliding device, the position of the upper end of the side wall panel can be adjusted so that the side wall panel is in a vertical state.

[0029] Furthermore, the telescopic mechanism includes a pre-embedded seat, a first connecting rod, a sleeve, and a second connecting rod. The pre-embedded seat is fixedly connected to the sleeper. One end of the first connecting rod is fixedly connected to the pre-embedded seat. One end of the second connecting rod abuts against the side wall plate. The other ends of the first connecting rod and the other ends of the second connecting rod have threaded sections with opposite helical directions and are respectively threaded to both ends of the sleeve.

[0030] The beneficial effect of adopting the above-mentioned further solution is that, during use, the telescopic mechanism can be extended or retracted by rotating the sleeve, thereby pressing against the side wall plate as needed and providing the side wall plate with resistance against the outer ballast.

[0031] Furthermore, the adjustable preload sliding device also includes a universal roller, which is installed at one end of the telescopic mechanism and abuts against the side wall plate.

[0032] The beneficial effects of adopting the above-mentioned further solution are: the adjustable preload sliding device is equipped with universal rollers, which reduces the resistance when the sleeper moves up and down, ensures the degree of freedom when the sleeper moves up and down, and guarantees the basic functions of the track system.

[0033] Furthermore, the ballast track system for the built-in pump room also includes a volume adjustment block, and at least one of the volume adjustment blocks is sandwiched between the side wall plate and the corresponding side wall of the precast trough.

[0034] The beneficial effect of adopting the above-mentioned further solution is that the volume adjustment block abuts and limits the lower end of the side wall panel. By setting different numbers of volume adjustment blocks, the distance between the side wall panel and the side wall of the precast trough can be adjusted.

[0035] Furthermore, the ballast track system with built-in pump house also includes a water pump. The combined pump pit is connected to the track bed drainage system, the water pump is installed in the combined pump pit, and the outlet of the water pump is connected to the station wastewater pump house. Attached Figure Description

[0036] Figure 1 This is a three-dimensional partial structural diagram of a built-in ballast track system for a pump house according to the present invention;

[0037] Figure 2 This is an end view of a built-in ballast track system for a pump house according to the present invention.

[0038] Figure 3 This is a partial structural diagram of the adjustable preload sliding device of this utility model;

[0039] Figure 4 This is a partial structural diagram of the combined pump pit of this utility model.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 1. Rail; 2. Sleeper; 3. Adjustable preload sliding device; 31. Embedded seat; 32. First connecting rod; 33. Sleeve; 34. Second connecting rod; 35. Universal roller; 4. Combined pump pit; 5. Ballast; 6. Precast base; 7. Side wall panel; 8. Backflow hole; 9. Waterstop; 10. Volume adjustment block; 11. Fastener. Detailed Implementation

[0042] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0043] Example 1

[0044] like Figures 1-4As shown, this embodiment provides a built-in ballast track system for pump rooms, including rails 1, sleepers 2, adjustable preloading sliding devices 3, combined pump pits 4, and ballast 5. The combined pump pit 4 includes a prefabricated base 6 and side wall panels 7. The prefabricated base 6 has a prefabricated groove. The side wall panels 7 are provided in two sets, and the two sets of side wall panels 7 are respectively installed on two side walls in the prefabricated groove. The lower part of the side wall panel 7 has a backflow hole 8, which is unidirectionally oriented from the outside to the inside of the side wall panel 7. The outside of the side wall panel 7 is filled with the ballast 5. The sleepers 2 are installed on the combined pump pit 4, and the rails 1 are fixed on the sleepers 2. The two ends of the adjustable preloading sliding device 3 are respectively connected to the sleepers 2 and the side wall panels 7, and apply a force to the side wall panels 7 outward.

[0045] The beneficial effects of this embodiment are as follows: 1. The adjustable preload sliding device 3 ensures the stability of the side wall plate 7, and the ballast 5 provides effective support for the sleeper 2, which solves the problem that the overall track bed structure of the built-in pump house has reduced load-bearing capacity, stability and durability are seriously affected by the groove in the center of the track bed.

[0046] 2. The use of a ballast track structure fundamentally solves the problems of strength and durability of the overall track bed, such as peeling, fracturing, and cracking, in a water-filled environment.

[0047] 3. The solution provided by this utility model is a ballast track bed, and the ballast is a loose structure, which can flexibly adapt to the deformation of the underlying foundation and will not cause voids; it solves the problem of insufficient tightness of the connection between the integrated track bed of the built-in pump house and the shield tunnel segment, and the easy voiding of the track bed in the long-term water storage environment.

[0048] 4. The combined pump pit 4 is a combined structure. The volume of the combined pump pit 4 can be flexibly adjusted according to actual drainage needs.

[0049] Specifically, this design includes a modular pump pit 4 in the middle of the track bed, providing the necessary space for installing water pumps. This space can be adjusted by changing the spacing between the two sets of sidewalls 7 to accommodate water pump installation and adjust the volume. The modular pump pit 4 is connected to the drainage system of the preceding and following normal track beds, allowing accumulated water to flow smoothly from upstream into the modular pump pit 4. At this point, the water pump installed in the modular pump pit 4 starts, draining the accumulated water and fulfilling the function of a pump house.

[0050] Ballast 5 is filled between the outer side of the sidewall panel 7 and the tunnel structure, serving as the foundation for supporting the sleepers 2. The ballast 5 encases the sleepers 2, providing necessary vertical and lateral support to meet the operational requirements of the track system. Simultaneously, the ballast 5 filling the outer side of the sidewall panel 7 exerts a lateral force on it towards the interior of the combined pump pit 4. To ensure the verticality and stability of the sidewall panel 7, a counterforce is required. Therefore, an adjustable preload sliding device 3 is installed on the inner side of the sidewall panel 7 to provide resistance towards the exterior of the combined pump pit 4.

[0051] This solution provides a built-in pump house system for ballasted track that enables comprehensive drainage across the entire track area. First, accumulated water at both ends flows into the combined pump pit 4 via normal drainage ditches and is pumped away. Second, accumulated water within the ballast 5 area on both sides flows into the combined pump pit 4 through backflow holes 8 located in the side wall panels 7, and is also pumped out. The backflow holes 8 have a unidirectional drainage function, allowing only water within the ballast 5 area to flow into the combined pump pit 4, preventing water within the combined pump pit 4 from flowing back into the ballast 5. This ensures a long-term water-free environment within the ballast 5 area, guaranteeing the functionality and performance of the ballasted track bed.

[0052] It should be noted that the outer side of the sidewall panel 7 refers to the side where the two sets of sidewall panels 7 are opposite to each other, that is, the outer side of the combined pump pit 4; the inner side of the sidewall panel 7 refers to the side where the two sets of sidewall panels 7 are facing each other, that is, the inner side of the combined pump pit 4.

[0053] The precast base 6 can be made of materials such as concrete, plastic, or nylon, as long as it meets the strength requirements. The space between the precast base 6 and the bottom of the tunnel can be filled tightly with mortar or other fillers to serve as a connection.

[0054] Specifically, there are two rails 1, which are perpendicular to the sleepers 2 and are respectively positioned above both ends of the sleepers 2. The rails 1 and sleepers 2 are connected by fasteners 11. The two rails 1 are respectively located on both sides of the outer side of the combined pump pit 4. Multiple sleepers 2 are spaced apart along the length of the rails 1.

[0055] Based on the above technical solution, grooves are provided at the upper ends of both side wall plates 7, and the two ends of the sleeper 2 are respectively installed in the grooves of the two side wall plates 7.

[0056] In this design, the end of the sleeper 2 is located in the groove of the side wall plate 7, so that both sides and the bottom of the end of the sleeper 2 are surrounded by the ballast 5, and the ballast 5 provides good support for the sleeper 2.

[0057] Based on the above technical solution, there is a gap between the outer wall of the sleeper 2 and the inner wall of the groove.

[0058] The two side walls and the bottom surface of the sleeper 2 are left with a certain gap with the inner edge of the groove of the side wall plate 7, so as to provide enough space for the sleeper 2 to move up and down during the vehicle's movement.

[0059] Based on the above technical solution, the combined pump pit 4 also includes a waterstop 9. Each set of side wall panels 7 includes multiple unit side panels. The multiple unit side panels are arranged sequentially along the length direction of the precast groove. The waterstop 9 is installed between adjacent unit side panels and between the lower end of the unit side panel and the precast groove, and is sealed by the waterstop 9.

[0060] The joints between the unit side panels and the joints between the unit side panels and the precast trough are sealed with waterstops to prevent water from flowing out of the combined pump pit 4.

[0061] Specifically, each unit side plate has one or more grooves at its upper end for placing the sleeper 2. Alternatively, the upper side plate of the unit side plate may have notches at both ends in the horizontal direction, and the notches of two adjacent unit side plates may form the aforementioned grooves.

[0062] In such Figure 3 and Figure 4 In a specific example shown, each unit side plate has a groove in the middle of the upper part and a reflux hole 8 at the lower end.

[0063] The sealing method for the waterstop 9 can be by brushing or direct adhesion.

[0064] Based on the above technical solution, both ends of the sleeper 2 are provided with the adjustable preload sliding device 3, and both sides of each end of the sleeper 2 are provided with the adjustable preload sliding device 3.

[0065] Adjustable preloading sliding devices 3 are installed at both ends of the sleeper 2, with two devices at each end. On the one hand, they apply an outward force to the side wall plate 7, preventing the ballast 5 from causing the side wall plate 7 to tilt inward toward the combined pump pit 4, thus increasing structural reliability. On the other hand, by installing multiple adjustable preloading sliding devices 3, the sleeper 2 is subjected to uniform force, which can stably support the rail 1.

[0066] Based on the above technical solution, the adjustable preload sliding device 3 includes a telescopic mechanism, one end of which is fixedly connected to the sleeper 2, and the other end of which abuts against the side wall plate 7.

[0067] The adjustable preload sliding device 3 adopts a telescopic mechanism with adjustable length. By telescoping the adjustable preload sliding device 3, the position of the upper end of the side wall panel 7 can be adjusted so that the side wall panel 7 is in a vertical state.

[0068] Optionally, the telescopic mechanism can be an electric telescopic pole, a hydraulic telescopic pole, a pneumatic telescopic pole, or a purely mechanical telescopic pole.

[0069] Based on the above technical solution, the telescopic mechanism is a purely mechanical telescopic rod structure. Specifically, the telescopic mechanism includes a pre-embedded seat 31, a first connecting rod 32, a sleeve 33, and a second connecting rod 34. The pre-embedded seat 31 is fixedly connected to the sleeper 2. One end of the first connecting rod 32 is fixedly connected to the pre-embedded seat 31. One end of the second connecting rod 34 abuts against the side wall plate 7. The other ends of the first connecting rod 32 and the other ends of the second connecting rod 34 have threaded sections with opposite helical directions, and are respectively threaded to both ends of the sleeve 33.

[0070] In use, the telescopic mechanism is extended or retracted by rotating the sleeve 33, thereby pressing against the side wall plate 7 as needed, providing the side wall plate 7 with resistance against the outer ballast 5.

[0071] Based on the above technical solution, the adjustable preload sliding device 3 also includes a universal roller 35, which is installed at one end of the telescopic mechanism and abuts against the side wall plate 7.

[0072] The adjustable preload sliding device 3 is equipped with universal rollers 35, which reduces the resistance when the sleeper 2 moves up and down, ensures the freedom of the sleeper 2 when moving up and down, and ensures the basic functions of the track system.

[0073] Specifically, the omnidirectional roller 35 is mounted on one end of the second link 34.

[0074] Based on the above technical solution, the built-in pump room ballast track system also includes a volume adjustment block 10, and at least one volume adjustment block 10 is sandwiched between the side wall plate 7 and the corresponding side wall of the precast trough.

[0075] The volume adjustment block 10 abuts against the lower end of the side wall panel 7 and is limited. By setting different numbers of volume adjustment blocks 10, the distance between the side wall panel 7 and the side wall of the precast trough can be adjusted.

[0076] Specifically, the volume adjustment block 10 is a strip-shaped block that extends along the length of the combined pump pit 4.

[0077] like Figure 4As shown, taking one side of the precast trough as an example, multiple volume adjustment blocks 10 are sequentially arranged along the width of the precast trough, starting from the side wall. The side wall plate 7 is abutted against the volume adjustment block 10 furthest from the side wall. When the distance between the side wall plate 7 and the side wall of the precast trough is increased, the number of volume adjustment blocks 10 is increased; when the distance between the side wall plate 7 and the side wall of the precast trough is decreased, the number of volume adjustment blocks 10 is decreased. The number of volume adjustment blocks 10 on both sides of the precast trough can be the same, different, or no volume adjustment blocks 10 may be provided. Preferably, the number of volume adjustment blocks 10 on both sides of the precast trough is the same, resulting in a symmetrical overall structure and balanced force.

[0078] Based on the above technical solution, the ballast track system with built-in pump room also includes a water pump. The combined pump pit 4 is connected to the track bed drainage system. The water pump is installed in the combined pump pit 4. The outlet of the water pump is connected to the station wastewater pump room.

[0079] Example 2

[0080] This embodiment also provides a method for manufacturing a ballasted track system, used to manufacture the built-in ballasted track system for pump rooms described in Embodiment 1, comprising the following steps:

[0081] Step 1: Place the prefabricated base 6 at the bottom of the tunnel;

[0082] Step 2: Adjust the distance between the two sets of side wall panels 7 and the corresponding side wall of the prefabricated groove of the prefabricated base 6, thereby adjusting the volume of the combined pump pit 4, and fix the side wall panels 7 to the bottom of the inner wall of the prefabricated groove of the prefabricated base 6 and seal it.

[0083] Specifically, in step two, adjusting the distance between the two sets of sidewall panels 7 and the corresponding sidewalls of the precast groove of the precast base 6 includes: adding or removing volume adjustment blocks 10 between the sidewall panels 7 and the sidewalls of the precast groove according to actual drainage needs or predicted drainage capacity. Specifically, when the drainage volume is small, the volume adjustment blocks 10 can be added to reduce the distance between the two sets of sidewall panels 7; when the drainage volume is large, the volume adjustment blocks 10 can be removed to increase the distance between the two sets of sidewall panels 7, thereby increasing the volume of the pump pit.

[0084] Specifically, in step two, fixing and sealing the side wall panel 7 to the bottom of the precast groove inner wall of the precast base 6 includes: fixing the side wall panel 7 to the bottom of the precast groove inner wall of the precast base 6, and installing a waterstop at the joint between the side wall panel 7 and the precast base 6. More specifically, the side wall panel 7 includes multiple unit side panels, and a waterstop also needs to be installed at the joint between adjacent unit side panels.

[0085] Step 3: Install rails 1 and sleepers 2 on the combined pump pit 4, and install an adjustable preload sliding device 3 on the side wall of the sleeper 2.

[0086] Step 4: Adjust the adjustable pre-compression sliding device 3 to make the two sets of side wall panels 7 vertical, and fill the ballast 5 to the outside of the side wall panels 7.

[0087] The beneficial effects are as follows: The manufacturing method of a built-in ballast track system for pump houses is simple. The position of the side wall plate 7 is adjustable, allowing the volume of the combined pump pit 4 to be adjusted according to actual conditions. Furthermore, the vertical state of the side wall plate 7 can be adjusted in a timely manner via the adjustable pre-loading sliding device 3. The built-in ballast track system for pump houses manufactured using this method solves the problems of reduced load-bearing capacity, stability, and durability of the overall track bed structure in built-in pump houses, which are severely affected by the grooved center of the track bed. The use of a ballast track bed structure fundamentally solves the problems of peeling, fracturing, and cracking of the overall track bed in a water-filled environment, thus improving strength and durability.

[0088] For projects that are already operational, if it is necessary to increase or decrease the volume of the combined pump pit 4, the adjustment steps include:

[0089] Specialized brackets are used to support rail 1 and sleeper 2, and ballast 5 is partially removed;

[0090] After adjusting the length of the adjustable preload sliding device 3, add a volume adjustment block 10 as needed;

[0091] After the volume adjustment block 10 is fixed, the side wall panel 7 is installed inside the volume adjustment block 10, and the installation and connection method is the same as the connection method between the side wall panel 7 and the prefabricated base 6.

[0092] Remove the special support frame and lower rail 1 and sleeper 2;

[0093] Adjust the adjustable preload sliding device 3 to make the two sets of side wall panels 7 vertical, and fill the ballast 5 to the outside of the side wall panels 7.

[0094] In the description of this utility model, it should be noted that the terms "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0096] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ballast track system for use in a built-in pump house, characterized in that The utility model provides a kind of railway track structure, including rail (1), tie (2), adjustable pre-pressing sliding device (3), combined pump pit (4) and ballast (5), the combined pump pit (4) includes prefabricated base (6) and side wall plate (7), the prefabricated base (6) has prefabricated groove, the side wall plate (7) is equipped with two groups, two groups the side wall plate (7) is respectively installed in two side walls in the prefabricated groove, the lower portion of the side wall plate (7) has reflux hole (8), the reflux hole (8) is unidirectionally conducted from the outside to the inside of the side wall plate (7), the outside of the side wall plate (7) is filled with the ballast (5), the tie (2) is installed on the combined pump pit (4), the rail (1) is fixed on the tie (2), the two ends of the adjustable pre-pressing sliding device (3) are connected with the tie (2) and the side wall plate (7) respectively, and the side wall plate (7) is applied to the force to its outside.

2. A ballast track system for use in a built-in pump house according to claim 1, characterized in that The upper end of the two side wall plates (7) is provided with a groove, and the two ends of the tie (2) are installed in the grooves of the two side wall plates (7).

3. A ballast track system for use in a built-in pump house according to claim 2, characterized in that The outer wall of the tie (2) and the inner wall of the groove have a gap.

4. A ballast track system for use in a built-in pump house according to claim 1, characterized in that The combined pump pit (4) further comprises a water stop belt (9), each group of side wall plates (7) comprises a plurality of unit side plates, the plurality of unit side plates are sequentially arranged along the length direction of the prefabricated groove, the water stop belt (9) is installed between adjacent unit side plates and between the lower end of the unit side plate and the prefabricated groove, and the unit side plates are sealed by the water stop belt (9).

5. A ballast track system for use in a built-in pump house according to claim 1, characterized in that The tie (2) is provided with the adjustable pre-pressing sliding device (3) at both ends, and the tie (2) is provided with the adjustable pre-pressing sliding device (3) on both sides of each end.

6. A ballast track system for use in a built-in pump house according to claim 1, characterized in that The adjustable pre-pressing sliding device (3) comprises a telescopic mechanism, one end of the telescopic mechanism is fixedly connected with the tie (2), and the other end of the telescopic mechanism abuts against the side wall plate (7).

7. A ballast track system for use in a built-in pump house according to claim 6, characterized in that The telescopic mechanism comprises a pre-buried seat (31), a first connecting rod (32), a sleeve (33) and a second connecting rod (34), the pre-buried seat (31) is fixedly connected with the tie (2), one end of the first connecting rod (32) is fixedly connected with the pre-buried seat (31), one end of the second connecting rod (34) abuts against the side wall plate (7), and the other end of the first connecting rod (32) and the other end of the second connecting rod (34) have thread segments with opposite screw directions and are threadedly connected with both ends of the sleeve (33) respectively.

8. A ballast track system for use in a built-in pump house according to claim 6, characterized in that The adjustable pre-pressing sliding device (3) further comprises a universal roller (35), the universal roller (35) is installed at one end of the telescopic mechanism, and the universal roller (35) abuts against the side wall plate (7).

9. A ballast track system for use in a built-in pump house according to claim 1, characterized in that Further comprising a volume adjusting block (10), at least one volume adjusting block (10) is clamped between the side wall plate (7) and the corresponding side wall of the prefabricated groove.

10. A ballast track system for use in a pump house having a built-in pump according to any one of claims 1-9, characterized in that Further comprising a water pump, the combined pump pit (4) is communicated with a ballast bed drainage system, the water pump is installed in the combined pump pit (4), and the water outlet of the water pump is communicated with a station wastewater pump house.

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