Auxiliary device for pouring ballastless track slab

Abstract

The present application relates to the field of railway track technology, and discloses an auxiliary device for pouring a ballastless track slab, comprising a formwork, a fixed rod member and an auxiliary positioning mechanism, wherein the auxiliary positioning mechanism comprises a base, a support plate, a transverse adjusting assembly with self-locking function, two slide blocks with adjustable spacing, two connecting shaft bodies and a longitudinal adjusting assembly with locking function. The auxiliary positioning mechanism is arranged to achieve rapid and accurate auxiliary installation of the formwork. The transverse and longitudinal two-degree-of-freedom adjusting mechanisms are cooperatively matched to accurately correct the posture of the formwork in three-dimensional space, ensure the perpendicularity of the formwork to the construction reference surface before pouring, and effectively avoid the cumulative error caused by traditional step-by-step adjustment. The worm and gear self-locking transverse adjusting mechanism and the gear reduction longitudinal adjusting mechanism are adopted to realize high-precision fine adjustment and posture self-retention function, reduce the number of repeated manual measurement and adjustment, and simplify the operation process.

Description

Technical Field

[0001] This invention relates to the field of railway track technology, and more specifically, to an auxiliary device for casting ballastless track slabs. Background Technology

[0002] Ballastless track refers to a track structure that uses a monolithic foundation of concrete, asphalt mixture, or similar materials instead of loose gravel ballast. Also known as ballastless track, it is currently a more advanced track technology. Compared to ballasted track, ballastless track has better overall rigidity due to the use of concrete. It eliminates bumps and noise caused by gaps between the rails and ballast, resulting in a smoother train ride, reduced vehicle wear, and prevention of ballast splashing. It is widely used in high-speed rail, urban rail, and heavy-haul railways, serving as a core technology for efficient and safe operation of rail transit.

[0003] Currently, as the mainstream structural form of ballastless track, CRTSⅢ type slab track requires the use of high-precision templates to pour and shape the concrete track bed during construction. Specifically, during construction, templates must first be installed at pre-set positions on the base and adjusted to be strictly perpendicular to the construction reference plane to ensure that the track slab's geometry and smoothness meet the requirements of high-speed train operation. In actual construction, existing technologies generally adopt a step-by-step operation mode of "positioning first, then fixing," that is, after determining the initial position of the template by total station measurement, mechanical reinforcement is carried out using clamps and rods. However, during the fixing stage, the template is prone to posture deviation due to uneven force applied by the clamps or deformation of the rods, causing the actual position to deviate from the preset coordinates. This may require repeated disassembly and adjustment to meet the accuracy requirements, making construction difficult, cumbersome, and reducing construction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary device for casting ballastless track slabs to solve the aforementioned technical problems.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] The present invention provides an auxiliary device for casting ballastless track slabs, comprising: a template, fixing rods and an auxiliary positioning mechanism. The auxiliary positioning mechanism includes a base, a support plate, a lateral adjustment component with self-locking function, two adjustable-spacing slides, two connecting shafts and a longitudinal adjustment component with locking function.

[0007] The lateral adjustment component connects the base and the support plate to adjust the lateral angle of the support plate; the two slides are symmetrically slidably disposed on the support plate, and the two connecting shafts are rotatably disposed on one side of the two slides; the longitudinal adjustment component is disposed on one of the slides and is connected to the corresponding connecting shaft for adjusting the longitudinal angle of the template.

[0008] Preferably, the lateral adjustment assembly includes a worm gear and a worm that mesh with each other, the worm gear being fixedly connected to the rotating shaft of the support plate, and the end of the worm being provided with a manual operating handle.

[0009] Preferably, the top of the support plate is provided with a slide rail, and the bottom of both slide blocks are slidably connected to the slide rail.

[0010] Preferably, the top of the support plate is provided with an adjusting screw with bidirectional threads, and the two slides are respectively threaded to both ends of the adjusting screw. The end of the adjusting screw is provided with an anti-slip knob.

[0011] Preferably, the longitudinal adjustment assembly comprises a gear set consisting of three reduction gears, wherein the final gear is coaxially connected to the connecting shaft, and the primary gear is connected to an adjustment handle with a dial.

[0012] Preferably, the connecting shaft and the template connection end are provided with a threaded part and equipped with a locking nut to achieve detachable fixation.

[0013] Preferably, the fixing member includes a telescopic main body, a telescopic rod, and a conical locking kit. The telescopic rod is slidably disposed at the end of the main body, and a radial clamping force is generated by a screwing action to lock the telescopic rod.

[0014] Preferably, the tapered locking kit includes a clamping sleeve with an axial gap and a threaded sleeve, the threaded sleeve being threaded onto the outside of the clamping sleeve, and the clamping sleeve being fitted onto the outside of the telescopic rod.

[0015] Preferably, the clamping sleeve has a taper angle of 15-30° and 4-6 deformation slots are evenly distributed around its circumference.

[0016] Preferably, the rotational connection between the support plate and the base is provided with an angle scale ring, and the rotation angle adjustment range is ±5°.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention enables rapid and precise assisted installation of templates by setting up an auxiliary positioning mechanism. Through the coordinated operation of the horizontal and vertical dual-degree-of-freedom adjustment mechanisms, the template posture can be accurately corrected in three-dimensional space, ensuring the perpendicularity of the template to the construction reference surface before pouring. This effectively avoids the cumulative errors caused by traditional step-by-step adjustment. Furthermore, by adopting a worm gear self-locking horizontal adjustment mechanism and a gear reduction vertical adjustment mechanism, high-precision fine-tuning and posture self-holding functions are achieved, reducing the number of manual repeated measurements and adjustments and simplifying the operation process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an auxiliary device for casting ballastless track slabs provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the structure between the auxiliary positioning mechanism and the template in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the auxiliary positioning mechanism in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure between the slide block and the longitudinal adjustment component in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0023] Figure 5 This is a schematic diagram of the longitudinal adjustment component in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the fixing rod in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0025] Figure 7 This is a schematic diagram of the conical locking kit in an auxiliary device for ballastless track slab casting provided by the present invention.

[0026] In the diagram: 1. Template; 2. Fixing rod; 21. Main rod; 22. Telescopic rod; 23. Hook; 24. Clamping sleeve; 25. Rotating sleeve; 3. Auxiliary positioning mechanism; 31. Base; 32. Support plate; 321. Slide rail; 322. Adjusting screw; 33. Lateral adjustment assembly; 331. Worm gear; 332. Worm; 34. Slide block; 35. Connecting shaft; 36. Longitudinal adjustment assembly; 361. Gear set; 362. Adjusting handle. Detailed Implementation

[0027] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0028] Please refer to the following: Figures 1 to 3An auxiliary device for casting ballastless track slabs includes: a template 1, fixing rods 2, and an auxiliary positioning mechanism 3; wherein, the template 1 is divided into front and rear side plates and left and right side plates, and the four side plates are spliced ​​together to form a rectangular frame, which serves as a mold for concrete casting. The fixing rods 2 are detachably connected to pre-embedded steel columns, which allows the template 1 to be fixed in a preset position with a preset posture. The auxiliary positioning mechanism 3 is used to pre-position the template 1 in a preset standard posture. The auxiliary positioning mechanism 3 includes a base 31, a support plate 32, a lateral adjustment component 33 with a self-locking function, two adjustable-space slides 34, two connecting shafts 35, and a longitudinal adjustment component 36 with a locking function. The lateral adjustment component 33 connects the base 31 and the support plate 32 to adjust the lateral angle of the support plate 32. The lateral adjustment component 33 has a self-locking function and can automatically lock in the locked state when not adjusted or after adjustment to maintain the stability of the support plate 32. An angle scale ring is provided at the rotational connection between the support plate 32 and the base 31, and the rotational angle adjustment range is ±5°. The two slides 34 are symmetrically slidably disposed on the support plate 32, and the two connecting shafts 35 are correspondingly rotatably disposed on one side of the two slides 34. The longitudinal adjustment component 36 is disposed on one of the slides 34 and is connected to the corresponding connecting shaft 35 for transmission, and is used to adjust the longitudinal angle of the template 1. The connecting shaft 35 and the template 1 are provided with a threaded part and a locking nut for detachable fixing.

[0029] When installing template 1, first place template 1 vertically in the preset installation position. Then, place the auxiliary positioning mechanism 3 near the middle of template 1, align the two slide blocks 34 with the two reinforcing ribs in the middle of template 1, and connect the connecting shaft 35 to the mating holes on the ribs. Secure with nuts. Then, fine-tune the position of the auxiliary positioning mechanism 3 to ensure template 1 is still in the standard preset installation position. Next, use instruments such as a level to determine if the bottom of template 1 is in a standard vertical position. If not, operate the lateral adjustment component 33 to rotate the support plate 32 left and right, and operate the longitudinal adjustment component 36 to rotate the connecting shaft, causing template 1 to rotate forward and backward. By adjusting the angles of template 1 in the forward and backward and left and right directions respectively, template 1 can be finally positioned... With the template 1 in a standard vertical position, the fixing rods 2 can be used to fix it to the left and right sides of the template 1 respectively. During this process, since the template 1 is fixed by the auxiliary positioning mechanism 3, the installation action of the fixing rods 2 has little impact on the position of the template 1. After the fixing rods 2 are fixed, the connecting shaft 35 can be separated from the template 1, and the entire auxiliary positioning mechanism 3 can be separated from the template 1. At this time, the template 1 can still maintain a standard vertical position under the fixing action of the fixing rods 2. The installation of the template 1 is completed. Then, repeat the above steps to install the remaining templates 1, and then the subsequent work can be carried out. In this way, the present invention can accurately correct the posture of the template 1 in three-dimensional space through the coordinated cooperation of the horizontal and vertical dual-degree-of-freedom adjustment mechanism, ensuring the perpendicularity of the template 1 to the construction reference surface before pouring, and effectively avoiding the cumulative error caused by traditional step-by-step adjustment.

[0030] Please refer to the following: Figures 2 to 3 The lateral adjustment component 33 includes a worm gear 331 and a worm 332 that mesh with each other. The worm gear 331 is fixedly connected to the rotating shaft of the support plate 32, and the end of the worm 332 is provided with a manual operation handle.

[0031] When the lateral adjustment component 33 drives the template 1 to rotate left and right, the worm gear 332 can be rotated to drive the worm wheel 331 to rotate, and the support plate 32 will rotate with the worm wheel 331. The slide 34 and the template 1 also rotate. After the template 1 rotates to the preset position, the worm gear 332 stops rotating, and the worm wheel 331 stops rotating under the locking action of the worm gear 332. At this time, the support plate 32 and the template 1 stop rotating and are locked. The self-locking lateral adjustment mechanism of the worm wheel 331 and the worm gear 332 and the gear reduction longitudinal adjustment mechanism realize high-precision fine adjustment and posture self-holding function, reduce the number of manual repeated measurement and adjustment, and simplify the operation process.

[0032] Please refer to the following: Figures 2 to 3The top of the support plate 32 is provided with a slide rail 321, and the bottoms of the two slide blocks 34 are slidably connected to the slide rail 321. The top of the support plate 32 is provided with an adjusting screw 322 with bidirectional threads, and the two slide blocks 34 are respectively threaded to both ends of the adjusting screw 322. The end of the adjusting screw 322 is provided with an anti-slip knob.

[0033] When connecting the two slide blocks 34 to the template 1, by rotating the screw 322, the two slide blocks 34 can be driven to slide synchronously towards each other along the slide rail 321 until the slide blocks 34 are aligned with the two corresponding ribs of the template 1. Then, the screw 322 can be stopped. Under the locking action of the screw 322, the slide blocks 34 remain fixed. Through the adjustable spacing design of the slide blocks 34 and the multi-point hinged fixation of the connecting shaft 35, the auxiliary mechanism and the template 1 form a rigid connection system, which effectively resists external force disturbance during the construction of the fixed rod 2 and prevents the template 1 from shifting.

[0034] Please refer to the following: Figures 3 to 5 The longitudinal adjustment component 36 includes a gear set 361 consisting of three-stage reduction gears, wherein the final gear is coaxially connected to the connecting shaft 35, and the primary gear is connected to an adjustment handle 362 with a scale. By setting the three-stage reduction gears, high-precision angle adjustment of the connecting shaft 35 can be achieved.

[0035] Please refer to the following: Figure 2 , Figures 6 to 7 There are two fixing rods 2. The two fixing rods 2 form a right-angled triangle structure with one side of the template 1. The fixing rod 2 includes a telescopic main rod 21, a telescopic rod 22 and a conical locking kit. The top of the main rod 21 is fixed with a hook 23. The telescopic rod 22 is slidably disposed at the bottom of the main rod 21. The radial clamping force is generated by the twisting action to lock the telescopic rod 22. The conical locking kit includes a clamping sleeve 24 with an axial gap and a threaded sleeve. The threaded sleeve is threaded on the outside of the clamping sleeve 24. The clamping sleeve 24 is sleeved on the outside of the telescopic rod 22. The taper angle of the clamping sleeve 24 is ±5° and 4-6 deformation gaps are evenly distributed around its circumference.

[0036] When installing the fixed rod 2, first connect the hook 23 to the mating hole on the template 1, and then pull the telescopic rod 22 according to the position of the pre-embedded steel column. At this time, the locking kit is in the unlocked state, and the telescopic rod 22 can be freely stretched. Then, put the end of the telescopic rod 22 on the pre-embedded steel column and adjust the angle of the main rod 21 so that the included angle between it and the template 1 is at the preset value. Then, by rotating the rotating sleeve 25, the clamping sleeve 24 is squeezed, and the telescopic rod 22 is squeezed and locked.

[0037] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An auxiliary device for casting ballastless track slabs, comprising: The template (1), the fixing rod (2), and the auxiliary positioning mechanism (3) are characterized in that: The auxiliary positioning mechanism (3) includes a base (31), a support plate (32), a lateral adjustment component (33) with self-locking function, two adjustable-spacing slides (34), two connecting shafts (35), and a longitudinal adjustment component (36) with locking function. The lateral adjustment component (33) connects the base (31) and the support plate (32) to adjust the lateral angle of the support plate (32); the two slides (34) are symmetrically slidably disposed on the support plate (32), and the two connecting shafts (35) are rotatably disposed on one side of the two slides (34); the longitudinal adjustment component (36) is disposed on one of the slides (34) and is connected to the corresponding connecting shaft (35) for adjusting the longitudinal angle of the template (1); The lateral adjustment assembly (33) includes a worm gear (331) and a worm (332) that mesh with each other. The worm gear (331) is fixedly connected to the rotating shaft of the support plate (32), and the end of the worm (332) is provided with a manual operation handle. The top of the support plate (32) is provided with an adjusting screw (322) with bidirectional threads. The two slides (34) are respectively threaded to both ends of the adjusting screw (322). The end of the adjusting screw (322) is provided with an anti-slip knob. The longitudinal adjustment assembly (36) includes a gear set (361) consisting of three reduction gears, wherein the final gear is coaxially connected to the connecting shaft (35), and the primary gear is connected to an adjustment handle (362) with a dial.

2. The auxiliary device for casting ballastless track slabs according to claim 1, characterized in that, The top of the support plate (32) is provided with a slide rail (321), and the bottoms of the two slide blocks (34) are slidably connected to the slide rail (321).

3. The auxiliary device for casting ballastless track slabs according to claim 1, characterized in that, The connecting shaft (35) and the template (1) are connected by a threaded part and equipped with a locking nut to achieve detachable fixation.

4. The auxiliary device for casting ballastless track slabs according to claim 1, characterized in that, The fixed rod (2) includes a telescopic main rod (21), a telescopic rod (22) and a conical locking kit. The telescopic rod (22) is slidably disposed at the end of the main rod (21), and a radial clamping force is generated by the twisting action to lock the telescopic rod (22).

5. An auxiliary device for casting ballastless track slabs according to claim 4, characterized in that, The conical locking kit includes a clamping sleeve (24) with an axial gap and a threaded sleeve (25), the threaded sleeve (25) being threaded on the outside of the clamping sleeve (24), and the clamping sleeve (24) being fitted on the outside of the telescopic rod (22).

6. The auxiliary device for casting ballastless track slabs according to claim 5, characterized in that, The clamping sleeve (24) has a taper angle of 15-30° and 4-6 deformation slots are evenly distributed around its circumference.

7. The auxiliary device for casting ballastless track slabs according to claim 1, characterized in that, An angle scale ring is provided at the rotational connection between the support plate (32) and the base (31), and the rotation angle adjustment range is ±5°.

Images