Ballastless track beam seam end mold in rail transit U-shaped beam

Abstract

The utility model discloses a ballastless track beam seam end mould in a rail transit U-shaped beam, which comprises an external expansion type template arranged between beam seams of two U-shaped beams, rubber layers are respectively arranged at the lower part of the external expansion type template and close to the end surfaces of the two U-shaped beams, each rubber layer is elastically abutted against the end surface of the corresponding U-shaped beam, and the external expansion type template is connected with the rubber layers. Two vertical adjusting mechanisms are detachably connected to the upper end of the external expansion type formwork in the transverse direction of the ballastless track in a spaced mode, the two vertical adjusting mechanisms are connected with traction components respectively, and the two traction components are hooked to the two steel rails respectively. The device can adapt to beam seams with different widths and can be effectively adjusted according to dynamic changes of the widths of the beam seams, it is ensured that the end face of a ballast track is flush with the end face of a U-shaped beam, and construction quality is improved. The utility model is suitable for the technical field of ballastless track construction in the U-shaped beam.

Description

Technical Field

[0001] The utility model belongs to the technical field of ballastless track construction based on a U-shaped beam, and specifically relates to a beam seam end mold for a ballastless track in a U-shaped beam of rail transportation. Background Art

[0002] Currently, in the construction of ballastless track within a U-shaped beam, after the U-shaped beam is assembled and the frame construction thereon is completed, it is necessary to install end forms at the beam joint between two adjacent U-shaped beams. Generally, two end forms are respectively attached to the end faces of the two U-shaped beams that are close to each other, and then the two ends of each end form are connected to the rail fasteners. After that, concrete pouring is carried out. Because the U-shaped beam is exposed to different environments, that is, different parameters such as temperature and humidity, the U-shaped beam undergoes certain deformation, and the size of the beam joint changes accordingly. As a result, the existing end formwork cannot meet the requirements of beam joints of different widths. Moreover, when the beam joint width changes dynamically, the use of the existing end formwork will cause inaccurate pouring and cannot ensure that the end face of the ballasted track is aligned with the end face of the U-shaped beam, thus affecting the quality of the project. Utility Model Content

[0003] The utility model provides a ballastless track beam seam end mold in a rail transit U-beam, which is used to adapt to beam seams of different widths and can be effectively adjusted according to dynamic changes in the beam seam width, ensuring that the end face of the ballasted track is aligned with the end face of the U-beam, thereby improving the quality of construction.

[0004] In order to achieve the above purpose, the technical solutions adopted by the present utility model are as follows:

[0005] A rail transit U-beam internal ballastless track beam seam end formwork includes an external expansion formwork installed between the beam seams of two U-beams, a rubber layer is provided at the lower portion of the external expansion formwork and close to the end faces of the two U-beams, each of the rubber layers elastically abuts against the end face of the corresponding U-beam, and two vertical adjustment mechanisms are detachably connected to the upper end of the external expansion formwork along the lateral intervals of the ballastless track, the two vertical adjustment mechanisms are respectively connected to a pulling member, and the two pulling members are respectively hooked on two rails.

[0006] Furthermore, the external expansion formwork includes a first formwork body and a second formwork body arranged at intervals along the length direction of the ballastless track, an external expansion unit is constructed between the first formwork body and the second formwork body, and two rubber layers are respectively arranged at the lower position of the end faces of the first formwork body and the second formwork body away from each other.

[0007] Furthermore, the external expansion unit includes a plug-in body and a socket body respectively constructed at the ends close to each other of the first template body and the second template body, a socket slot is constructed in the socket body, one end of the plug-in body is movably inserted into the socket slot, and a driving cavity is formed in the socket slot and between the end of the plug-in body and the second template body, and a medium joint is constructed at the upper end of the second template body, and the medium joint is connected to the driving cavity through a medium channel constructed in the second template body.

[0008] Furthermore, a blocking frame is detachably connected to one end of the socket body close to the first template body, and the diameter of the blocking frame is smaller than the diameter of the socket slot. A plug connector is constructed at one end of the connector close to the second template body, and the outer peripheral wall of the plug connector is adapted to the inner peripheral wall of the socket slot, and the outer peripheral wall of the connector body is adapted to the inner peripheral wall of the blocking frame.

[0009] Furthermore, a connecting edge is constructed at the upper end of the first formwork body and the second formwork body respectively, each connecting edge extends along the length direction of the beam seam, and a plurality of reinforcing plates are constructed between the connecting edge and the first formwork body or the second formwork body, these reinforcing plates are arranged at intervals along the length direction of the connecting edge, and a plurality of threaded holes are provided at intervals along the length direction of each connecting edge, and the two connecting edges are connected to the vertical adjustment mechanism through two corresponding threaded holes.

[0010] Furthermore, the vertical adjustment mechanism includes a fixing assembly detachably connected to the upper end of the external expansion formwork, and the fixing assembly is connected to the pulling member via an adjustment assembly connected thereto.

[0011] Furthermore, the fixing assembly includes a first gasket and a second gasket that are detachably connected to the upper end of the first formwork body and the upper end of the second formwork body, respectively. A first connecting ear and a second connecting ear are respectively constructed on the first gasket and the second gasket. One end of the connecting rod is fixedly connected to the first connecting ear, and the other end of the connecting rod is movable through the second connecting ear. The connecting rod extends along the length direction of the ballastless track, and a blocking block is connected to the end of the connecting rod away from the first connecting ear.

[0012] Furthermore, the adjustment assembly includes a vertically arranged adjustment screw, the lower end of the adjustment screw is constructed with a connecting sleeve, the connecting sleeve is sleeved outside the connecting rod, the upper end of the adjustment screw passes through the pulling member, and two locking nuts are threadedly connected to the adjustment screw, and the two locking nuts are tightened on the two opposite end surfaces of the pulling member.

[0013] Furthermore, the pulling member includes a hook member with one end hooked on the outside of the rail, and the other end of the hook member extends horizontally from the top of the rail to the inside of the rail. Two fixing ears are constructed on the hook member at intervals along the length direction of the rail, and a fixing sleeve is constructed at one end of the connecting arm. The fixing sleeve is arranged between the two fixing ears, and the fixing pin is arranged between the two fixing ears, and the fixing sleeve is fixedly connected to the fixing pin. The connecting arm extends inwardly along the transverse direction of the ballastless track, and the upper end of the vertical adjustment mechanism is detachably connected to the connecting arm.

[0014] Furthermore, a strip hole is provided on the connecting arm, and the strip hole extends in the transverse direction of the ballastless track. The upper end of the vertical adjustment mechanism is detachably connected to the connecting arm through the strip hole.

[0015] Due to the aforementioned structure, the present invention achieves a technical improvement over the prior art in that: Construction workers position the expansion formwork within the beam gap between two U-shaped beams and drive the expansion formwork, causing the two opposing side walls of the expansion formwork to move away from each other, so that the lower ends of the two opposing side walls abut the end faces of the two U-shaped beams. At this point, the rubber layer is compressed between the expansion formwork and the U-shaped beams. Two tension members are then hooked onto two rails, symmetrically arranged. Two vertical adjustment mechanisms are then symmetrically mounted on the upper ends of the expansion formwork, each connected to a corresponding tension member, so that the tension members are connected to the expansion formwork via the vertical adjustment mechanisms. The present invention allows the expansion formwork to be adjusted in depth into the beam gap by adjusting the vertical adjustment mechanisms, thereby ensuring that the lower portion of the expansion formwork is positioned between the two U-shaped beams, ensuring that the end faces of the ballast track are aligned with the end faces of the U-shaped beams during ballasted track casting. When the beam gap changes, the expansion degree of the external expansion formwork is controlled to adapt to the changing beam gap. In summary, the utility model can adapt to beam gaps of different widths and can effectively adjust according to the dynamic changes in the beam gap width, ensuring that the end face of the ballasted track is aligned with the end face of the U-shaped beam, thereby improving the quality of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached figure:

[0018] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a structural front view of an embodiment of the utility model;

[0020] Figure 3 This is a structural diagram of the external expansion formwork according to an embodiment of the present utility model;

[0021] Figure 4 This is a structural cross-sectional view of the external expansion formwork according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the external expansion formwork after disassembly according to an embodiment of the utility model;

[0023] Figure 6 This is a schematic structural diagram of the connection between the vertical adjustment mechanism and the pulling member in an embodiment of the utility model;

[0024] Figure 7 This is a structural diagram of the vertical adjustment mechanism of an embodiment of the utility model;

[0025] Figure 8 This is a schematic structural diagram of a pulling member according to an embodiment of the present utility model.

[0026] Labeled parts: 100-external expansion formwork, 101-first formwork body, 102-second formwork body, 103-plug-in body, 104-plug joint, 105-socket body, 106-blocking frame, 107-driving chamber, 108-medium channel, 109-medium joint, 110-connecting edge, 111-reinforcement plate, 112-threaded hole, 200-vertical adjustment mechanism, 201-first gasket, 202-first connecting ear, 203-second gasket, 204-second connecting ear, 205-connecting rod, 206-blocking block, 207-adjusting screw, 208-connecting sleeve, 209-locking nut, 300-pulling member, 301-hook, 302-fixing ear, 303-fixing pin, 304-connecting arm, 305-fixing sleeve, 306-strip hole, 400-rail, 500-rubber layer. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0028] The utility model discloses a ballastless track beam seam end mold in a U-shaped beam of rail transportation. Figure 1-8As shown, the bulge formwork 100 includes two vertical adjustment mechanisms 200 and two tensioning members 300. The bulge formwork 100 is installed between the beam seams of two U-shaped beams. Rubber layers 500 are provided at the bottom of the bulge formwork 100. These two rubber layers 500 are disposed on the two end faces of the bulge formwork 100 near the two U-shaped beams, with each rubber layer 500 elastically abutting the corresponding end face of the U-shaped beam. The two vertical adjustment mechanisms 200 described in the present invention are detachably connected to the upper end of the bulge formwork 100 and are spaced laterally along the ballastless track. The two tensioning members 300 are connected to the two vertical adjustment mechanisms 200, and the two tensioning members 300 are hooked onto two rails 400. The working principle and advantages of the present invention are as follows: Construction workers place the external expansion formwork 100 of the present invention within the gap between two U-shaped beams and drive the external expansion formwork 100, causing the two opposing side walls of the external expansion formwork 100 to move away from each other, so that the lower ends of the two opposing side walls of the external expansion formwork 100 respectively abut the end faces of the two U-shaped beams. At this point, the rubber layer 500 is compressed between the external expansion formwork 100 and the U-shaped beams. Next, two tensioning members 300 are hooked onto two steel rails 400, and the two tensioning members 300 are symmetrically arranged. Next, two vertical adjustment mechanisms 200 are symmetrically installed on the upper ends of the external expansion formwork 100, each vertical adjustment mechanism 200 being connected to a corresponding tensioning member 300, so that the tensioning members 300 are connected to the external expansion formwork 100 via the vertical adjustment mechanisms 200. The present invention can adjust the depth of the external expansion formwork 100 extending into the beam joint by adjusting the vertical adjustment mechanism 200, thereby ensuring that the lower portion of the external expansion formwork 100 is located between the two U-shaped beams, so that during the casting of the ballasted track, the end face of the ballast track is aligned with the end face of the U-shaped beam. When the beam joint changes, the degree of expansion of the external expansion formwork 100 is controlled to adapt to the changing beam joint. In summary, the present invention can adapt to beam joints of different widths and can be effectively adjusted according to the dynamic changes in the beam joint width, ensuring that the end face of the ballasted track is aligned with the end face of the U-shaped beam, thereby improving the quality of construction.

[0029] As a preferred embodiment of the present invention, Figure 3-5As shown, the expansion formwork 100 includes a first formwork body 101, a second formwork body 102, and an expansion unit. The first formwork body 101 and the second formwork body 102 are spaced apart along the length of the ballastless track. The expansion unit is constructed between the first formwork body 101 and the second formwork body 102. Two rubber layers 500 are respectively provided at the lower portion of the end surfaces of the first formwork body 101 and the second formwork body 102, which are located away from each other. Specifically, the external expansion unit includes a plug-in body 103 and a socket body 105, which are respectively constructed at the ends of the first template body 101 and the second template body 102 that are close to each other. A socket slot is constructed in the socket body 105, and one end of the plug-in body 103 is movably inserted into the socket slot. A driving cavity 107 is formed in the socket slot and between the end of the plug-in body 103 and the second template body 102. A medium channel 108 is constructed in the second template body 102, and a medium joint 109 is constructed at the upper end of the second template body 102. The medium joint 109 is connected to the driving cavity 107 through the medium channel 108. In this embodiment, a blocking frame 106 is detachably connected to the end of the socket body 105 near the first template body 101. The diameter of the blocking frame 106 is smaller than that of the socket slot. A plug connector 104 is constructed at the end of the plug body 103 near the second template body 102. The outer peripheral wall of the plug connector 104 is adapted to the inner peripheral wall of the socket slot, and the outer peripheral wall of the plug body 103 is adapted to the inner peripheral wall of the blocking frame 106. The working principle and advantages of this embodiment are as follows: when it is necessary to adjust the distance between the first template body 101 and the second template body 102 so that they respectively abut the end faces of the two U-shaped beams, high-pressure gas or hydraulic oil is injected into the driving chamber 107 at a predetermined pressure through the medium connector 109 until the first template body 101 and the second template body 102 move away from each other, abut the end faces of the two U-shaped beams, and are compressed at a predetermined pressure. In this embodiment, a pressure gauge can be installed on the second template body 102 to display the pressure of the driving cavity 107 in real time. When the pressure in the driving cavity 107 changes, it indicates that the width of the beam gap has changed. When the beam gap becomes larger, the pressure in the driving cavity 107 becomes smaller, and when the beam gap becomes smaller, the pressure in the driving cavity 107 becomes larger. Thereafter, according to the change in the pressure in the driving cavity 107, the medium is injected into or discharged from the driving cavity 107 so that the pressure in the driving cavity 107 reaches a predetermined value, and then the distance between the first template body 101 and the second template body 102 is adjusted so that the two are pressed between the two U-shaped beams according to the predetermined pressure.

[0030] As a preferred embodiment of the present invention, Figure 3 、 4As shown, a connecting edge 110 is constructed at the upper end of the first formwork body 101 and the second formwork body 102, respectively. Each connecting edge 110 extends along the length of the beam joint, and a plurality of reinforcing plates 111 are constructed between the connecting edge 110 and the first formwork body 101 or the second formwork body 102. These reinforcing plates 111 are arranged at intervals along the length of the connecting edge 110. In this embodiment, a plurality of threaded holes 112 are spaced apart along the length of each connecting edge 110, and the two connecting edges 110 are connected to the vertical adjustment mechanism 200 through the corresponding two threaded holes 112.

[0031] As a preferred embodiment of the present invention, Figure 6 、 7 As shown, the vertical adjustment mechanism 200 includes a fixing assembly and an adjustment assembly. The fixing assembly is detachably connected to the upper end of the expansion formwork 100, while the adjustment assembly is detachably connected to the fixing assembly and is connected to the tensioning member 300. Specifically, the fixing assembly includes a first washer 201, a second washer 203, and a connecting rod 205. The first washer 201 is threadedly connected to the corresponding threaded hole 112 on the upper end of the first formwork body 101 via a connecting bolt, while the second washer 203 is threadedly connected to the corresponding threaded hole 112 on the upper end of the second formwork body 102 via another connecting bolt. In this embodiment, the first washer 201 and the second washer 203 are respectively configured with a first connecting lug 202 and a second connecting lug 204. One end of the connecting rod 205 is fixedly connected to the first connecting lug 202, while the other end of the connecting rod 205 is movable through the second connecting lug 204. The connecting rod 205 extends along the length of the ballastless track. A stopper 206 is connected to the end of the connecting rod 205 away from the first connecting lug 202. The adjustment assembly includes a vertically mounted adjustment screw 207. The lower end of the adjustment screw 207 is configured with a connecting sleeve 208, which fits over the connecting rod 205. The upper end of the adjustment screw 207 extends through the tensioning member 300. Two locking nuts 209 are threadedly connected to the adjustment screw 207 and tightened onto opposing end surfaces of the tensioning member 300. The operating principle and advantages of this embodiment lie in the fact that the fixing assembly can be installed at different locations on the connecting edge 110 of the first and second template bodies 101, 102, depending on the specific situation. Because the connecting rod 205 is flexibly connected to the second connecting lug 204, the distance between the first and second gaskets 201, 203 changes as the first and second template bodies 101, 102 move closer or further away from each other. In this embodiment, the height of the adjusting screw 207 is adjusted so that the adjusting screw 207 pulls the external expansion formwork 100 to move in the vertical direction, thereby adjusting the depth of the external expansion formwork 100 extending into the beam joint. After the adjustment is completed, each locking nut 209 is tightened.

[0032] As a preferred embodiment of the present invention, Figure 6 、 8 As shown, the pulling member 300 includes a hook 301 and a connecting arm 304. One end of the hook 301 is hooked onto the outer surface of the rail 400, while the other end extends horizontally from above the rail 400 to the inner side of the rail 400. Two fixing ears 302 are spaced apart along the length of the rail 400 on the hook 301. In this embodiment, a fixing sleeve 305 is configured at one end of the connecting arm 304. The fixing sleeve 305 is disposed between the two fixing ears 302, and a fixing pin 303 is disposed between the two fixing ears 302. The fixing sleeve 305 is fixedly connected to the fixing pin 303. Furthermore, the connecting arm 304 extends inwardly in the transverse direction of the ballastless track. The upper end of the vertical adjustment mechanism 200 is detachably connected to the connecting arm 304. In this embodiment, a strip-shaped hole 306 is formed in the connecting arm 304, extending transversely along the ballastless track. The upper end of the adjusting screw 207 of the vertical adjustment mechanism 200 passes through the strip-shaped hole 306, and two locking nuts 209 are tightened onto the upper and lower end surfaces of the connecting arm 304. In this embodiment, the position where the adjusting screw 207 passes through the strip-shaped hole 306 is adjusted based on the connection position of the fixing assembly and the external expansion formwork 100, thereby achieving the purpose of connecting the tensioning member 300 to the vertical adjustment mechanism 200 in multiple positions.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A ballastless track beam seam end form for rail transit U-beam, characterized by: It includes an external expansion formwork installed between the beam seams of two U-shaped beams, and a rubber layer is respectively provided on the lower part of the external expansion formwork and close to the end faces of the two U-shaped beams. Each rubber layer elastically abuts against the end face of the corresponding U-shaped beam. Two vertical adjustment mechanisms are detachably connected to the upper end of the external expansion formwork along the horizontal intervals of the ballastless track. The two vertical adjustment mechanisms are respectively connected to a pulling member, and the two pulling members are respectively hooked on two rails.

2. The rail transit U-beam inner ballastless track beam seam end mold according to claim 1, characterized in that: The external expansion formwork includes a first formwork body and a second formwork body arranged at intervals along the length direction of the ballastless track, an external expansion unit is constructed between the first formwork body and the second formwork body, and two rubber layers are respectively arranged at the lower position of the end surface of the first formwork body and the second formwork body away from each other.

3. The rail transit U-beam inner ballastless track beam seam end mold according to claim 2, characterized in that: The external expansion unit includes a plug-in body and a socket body respectively constructed at the ends close to each other of the first template body and the second template body. A socket slot is constructed in the socket body, and one end of the plug-in body is movably inserted into the socket slot. A driving cavity is formed in the socket slot and between the end of the plug-in body and the second template body. A medium joint is constructed at the upper end of the second template body, and the medium joint is connected to the driving cavity through a medium channel constructed in the second template body.

4. The rail transit U-beam inner ballastless track beam seam end mold according to claim 3, characterized in that: A blocking frame is detachably connected to one end of the socket body close to the first template body, and the diameter of the blocking frame is smaller than the diameter of the socket slot. A plug connector is constructed at one end of the connector close to the second template body, and the outer peripheral wall of the plug connector is adapted to the inner peripheral wall of the socket slot, and the outer peripheral wall of the connector body is adapted to the inner peripheral wall of the blocking frame.

5. The rail transit U-beam inner ballastless track beam seam end mold according to claim 2, characterized in that: A connecting edge is constructed at the upper end of the first formwork body and the second formwork body respectively, each connecting edge extends along the length direction of the beam seam, and a plurality of reinforcing plates are constructed between the connecting edge and the first formwork body or the second formwork body. These reinforcing plates are arranged at intervals along the length direction of the connecting edge, and a plurality of threaded holes are provided at intervals along the length direction of each connecting edge, and the two connecting edges are connected to the vertical adjustment mechanism through two corresponding threaded holes.

6. The rail transit U-beam inner ballastless track beam seam end mold according to claim 2, characterized in that: The vertical adjustment mechanism includes a fixing assembly detachably connected to the upper end of the external expansion formwork, and the fixing assembly is connected to the pulling member via an adjustment assembly connected thereto.

7. The rail transit U-beam inner ballastless track beam seam end mold according to claim 6, characterized in that: The fixing assembly includes a first gasket and a second gasket that are detachably connected to the upper end of the first formwork body and the upper end of the second formwork body, respectively. A first connecting ear and a second connecting ear are respectively constructed on the first gasket and the second gasket. One end of the connecting rod is fixedly connected to the first connecting ear, and the other end of the connecting rod is movable through the second connecting ear. The connecting rod extends along the length direction of the ballastless track, and a blocking block is connected to the end of the connecting rod away from the first connecting ear.

8. The rail transit U-beam inner ballastless track beam seam end mold according to claim 7, characterized in that: The adjustment assembly includes a vertically arranged adjustment screw, the lower end of the adjustment screw is configured with a connecting sleeve, the connecting sleeve is sleeved outside the connecting rod, the upper end of the adjustment screw passes through the pulling member, and two locking nuts are threadedly connected to the adjustment screw, and the two locking nuts are tightened on the two opposite end surfaces of the pulling member.

9. The rail transit U-beam inner ballastless track beam seam end mold according to claim 1, characterized in that: The pulling member includes a hook member with one end hooked on the outside of the rail, and the other end of the hook member extends horizontally to the inside of the rail through the top of the rail. Two fixing ears are constructed on the hook member at intervals along the length direction of the rail. A fixing sleeve is constructed at one end of the connecting arm, and the fixing sleeve is arranged between the two fixing ears. A fixing pin is arranged between the two fixing ears, and the fixing sleeve is fixedly connected to the fixing pin. The connecting arm extends inwardly along the transverse direction of the ballastless track, and the upper end of the vertical adjustment mechanism is detachably connected to the connecting arm.

10. The rail transit U-beam inner ballastless track beam seam end mold according to claim 9, characterized in that: A strip hole is provided on the connecting arm, and the strip hole extends in the transverse direction of the ballastless track. The upper end of the vertical adjustment mechanism is detachably connected to the connecting arm through the strip hole.

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