Auxiliary device for pouring ballastless track slab

Abstract

The invention relates to the technical field of railway tracks, and discloses an auxiliary device for pouring a ballastless track slab, which comprises a template, a fixed rod piece and an auxiliary positioning mechanism, the auxiliary positioning mechanism comprises a base, a supporting plate, a transverse adjusting assembly with a self-locking function, two sliding seats with an adjustable distance, two connecting shaft bodies and a longitudinal adjusting assembly with a locking function. By arranging the auxiliary positioning mechanism, rapid and accurate auxiliary installation of the formwork is achieved, the posture of the formwork can be accurately corrected in a three-dimensional space through cooperation of the transverse and longitudinal two-degree-of-freedom adjusting mechanism, the perpendicularity of the formwork and a construction datum plane before pouring is ensured, accumulative errors generated by traditional step-by-step adjustment are effectively avoided, and the construction efficiency is improved. And a worm and gear self-locking type transverse adjusting mechanism and a gear reduction type longitudinal adjusting mechanism are adopted, so that the high-precision fine adjustment and posture self-holding functions are realized, the manual repeated measurement and adjustment times are reduced, and the operation process is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of railway tracks, and more particularly to an auxiliary device for casting ballastless track slabs. Background Art

[0002] Ballastless track refers to a track structure that uses concrete, asphalt mixture and other integral foundations to replace the granular gravel roadbed. It is also called ballastless track and is currently the most advanced track technology. Compared with ballasted track, due to the use of concrete materials, ballastless track has better overall rigidity, will not cause bumps and noise due to the gap between the rails and ballast, and the train runs more smoothly, which can also reduce vehicle wear and tear, and avoid ballast splashing. It is widely used in high-speed rail, urban rail and heavy-duty railway, and is the core technology carrier for efficient and safe operation of rail transit.

[0003] At present, as the mainstream structural form of ballastless track, CRTSⅢ slab ballastless track needs to use high-precision templates to complete the pouring and forming of the concrete roadbed during the construction process. Specifically, during construction, the template must be installed at the preset position of the base first, and adjusted to be strictly perpendicular to the construction reference plane to ensure that the geometric dimensions and smoothness of the track plate meet the operation requirements of high-speed trains. In the actual construction process, the existing technology generally adopts a step-by-step operation mode of "positioning first, then fixing", that is, after the total station measures and determines the initial position of the template, it is mechanically reinforced by clamps and rods. However, during the fixing stage, the template is affected by uneven force of the clamp or deformation of the rod, which is prone to posture deviation, causing the actual position to deviate from the preset coordinates. It may need to be repeatedly disassembled and adjusted to meet the accuracy requirements, making the construction difficult and the operation more cumbersome, reducing the construction efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary device for casting ballastless track slabs to solve the above-mentioned 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 a ballastless track slab, comprising: a template, a fixing rod and an auxiliary positioning mechanism, wherein the auxiliary positioning mechanism comprises a base, a support plate, a lateral adjustment component with a self-locking function, two sliding seats with adjustable spacing, two connecting shafts and a longitudinal adjustment component with a locking function;

[0007] Among them, 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 arranged on the support plate, and the two connecting shafts are correspondingly rotatably arranged on one side of the two slides; the longitudinal adjustment component is arranged on one of the slides and is transmission-connected to the corresponding connecting shaft for adjusting the longitudinal angle of the template.

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

[0009] Preferably, a slide rail is provided on the top of the support plate, and the bottoms of the two slide seats are slidably connected to the slide rail.

[0010] Preferably, an adjusting screw with bidirectional threads is provided on the top of the support plate, the two slide seats are respectively threadedly connected to the two ends of the adjusting screw, and an anti-slip knob is provided at the end of the adjusting screw.

[0011] Preferably, the longitudinal adjustment assembly comprises a gear set consisting of three-stage 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 connecting end are provided with a threaded portion and are equipped with a locking nut to achieve detachable fixation.

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

[0014] Preferably, the conical locking kit comprises a clamping sleeve and a threaded sleeve with an axial gap, the threaded sleeve is threadedly sleeved on the outside of the clamping sleeve, and the clamping sleeve is sleeved on the outside of the telescopic rod.

[0015] Preferably, the taper angle of the clamping sleeve is 15-30°, and 4-6 deformation gaps are evenly distributed in the circumferential direction.

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

[0017] The beneficial effects of the present invention are:

[0018] The present invention realizes fast and accurate auxiliary installation of the template by setting an auxiliary positioning mechanism. Through the coordinated cooperation of the horizontal and vertical dual-degree-of-freedom adjustment mechanisms, the template posture can be accurately corrected in three-dimensional space to ensure the verticality of the template and the construction reference plane before pouring, and effectively avoid the cumulative error caused by traditional step-by-step adjustment. The worm gear self-locking horizontal adjustment mechanism and the gear reduction longitudinal adjustment mechanism are adopted to realize high-precision fine-tuning and posture self-maintaining functions, reduce the number of manual repeated measurements and adjustments, and simplify the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an auxiliary device for casting a ballastless track slab provided by the present invention;

[0020] Figure 2 It is a schematic structural diagram 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 It is a schematic structural diagram of an auxiliary positioning mechanism in an auxiliary device for casting ballastless track slabs provided by the present invention;

[0022] Figure 4 It is a schematic structural diagram between the sliding seat and the longitudinal adjustment assembly in an auxiliary device for casting ballastless track slabs provided by the present invention;

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

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

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

[0026] In the figure: 1, template; 2, fixed rod; 21, main rod body; 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, sliding seat; 35, connecting shaft body; 36, longitudinal adjustment assembly; 361, gear set; 362, adjusting handle. Detailed implementation manners

[0027] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0028] Please refer to in combination Figures 1 to 3An auxiliary device for casting ballastless track slabs includes: a template 1, a fixing rod 2 and an auxiliary positioning mechanism 3; wherein the template 1 is divided into front and rear side panels and left and right side panels, and the four side panels are spliced ​​to form a rectangular frame as a concrete casting mold. The fixing rod 2 is detachably connected to the embedded steel column, so that the template 1 can be fixed at a preset position in a preset posture. The auxiliary positioning mechanism 3 is used to make the template 1 pre-set 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 slides 34 with adjustable spacing, 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 be automatically locked when not adjusted or after adjustment to maintain the stability of the support plate 32. An angle scale ring is provided at the rotation connection between the support plate 32 and the base 31, and the rotation angle adjustment range is ±5°; the two slides 34 are symmetrically slidably arranged on the support plate 32, and the two connecting shafts 35 are correspondingly rotatably arranged on one side of the two slides 34; the longitudinal adjustment component 36 is arranged on one of the slides 34 and is transmission-connected with the corresponding connecting shaft 35, which is used to adjust the longitudinal angle of the template 1. The connecting shaft 35 and the connecting end of the template 1 are provided with a threaded portion and are equipped with a locking nut to achieve detachable fixation.

[0029] When installing the template 1, first place the template 1 vertically at the preset installation position. Then, place the auxiliary positioning mechanism 3 near the middle of the template 1. Align the two sliding seats 34 with the two reinforcing ribs in the middle of the template 1 respectively, and connect the connecting shaft body 35 with the docking holes on the ribs, and fix it with nuts. Then, fine-tune the position of the auxiliary positioning mechanism 3 to ensure that the template 1 is still in the standard preset installation position. Then, use instruments such as a level to determine whether the bottom of the template 1 is in a standard vertical posture at this time. If not, operate the lateral adjustment component 33 to make the support plate 32 rotate in the left-right direction, and operate the longitudinal adjustment component 36 to drive the connecting shaft to rotate, so that the template 1 rotates in the front-back direction. By adjusting the angles of the template 1 in the front-back and left-right directions respectively, the template 1 can finally be in a standard vertical posture. Then, the fixing rods 2 can be used to fix 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 influence of the installation action of the fixing rods 2 on the position of the template 1 is small. After the fixing rods 2 are fixed, the connecting shaft body 35 can be disassembled 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 posture under the fixing action of the fixing rods 2, and the installation operation of the template 1 is completed. Then, repeat the above steps to install the remaining templates 1, and then the subsequent operations can be carried out. In this way, through the coordinated cooperation of the lateral and longitudinal two-degree-of-freedom adjustment mechanisms of the present invention, the posture of the template 1 can be accurately corrected in three-dimensional space, ensuring the perpendicularity of the template 1 and the construction reference surface before pouring, and effectively avoiding the cumulative error caused by traditional step-by-step adjustment.

[0030] Please refer to 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 a manual operation handle is provided at the end of the worm 332.

[0031] When using the lateral adjustment component 33 to drive the template 1 to rotate left and right, by rotating the worm 332, the worm gear 331 can be driven to rotate, and the support plate 32 rotates together with the worm gear 331, and the sliding seat 34 and the template 1 also rotate. After the template 1 rotates to the preset position, stop rotating the worm 332, and the worm gear 331 stops rotating under the locking action of the worm 332. At this time, the support plate 32 and the template 1 stop rotating and are locked. By adopting the self-locking lateral adjustment mechanism of the worm gear 331 and the worm 332 and the gear reduction type longitudinal adjustment mechanism, the high-precision fine adjustment and posture self-holding functions are realized, the number of times of manual repeated measurement and adjustment is reduced, and the operation process is simplified.

[0032] Please refer to Figures 2 to 3, a slide rail 321 is provided at the top of the support plate 32, and the bottoms of the two sliding seats 34 are both slidably connected to the slide rail 321. A regulating screw 322 with a double-thread is provided at the top of the support plate 32. The two sliding seats 34 are respectively threadedly connected to both ends of the regulating screw 322, and an anti-slip thread knob is provided at the end of the regulating screw 322.

[0033] When connecting the two sliding seats 34 to the template 1, by rotating the screw 322, the two sliding seats 34 can be driven to slide synchronously and towards each other along the slide rail 321 until the two ribs corresponding to the sliding seats 34 are aligned with the template 1, then the rotation of the screw 322 can be stopped. Under the locking action of the screw 322, the sliding seats 34 are fixed. Through the adjustable distance design of the sliding seats 34 and the multi-point articulated fixation of the connecting shaft body 35, a rigid connection system is formed between the auxiliary mechanism and the template 1, effectively resisting external force disturbances during the construction operation of the fixed rod 2 and preventing the template 1 from shifting.

[0034] Please refer to Figures 3 to 5 , the longitudinal adjustment assembly 36 includes a gear set 361 composed of three-stage reduction gears. The final-stage gear is coaxially connected to the connecting shaft body 35, and the primary gear is connected with an adjustment grip 362 with a scale disk. By setting the three-stage reduction gears, high-precision angle adjustment of the connecting shaft body 35 is achieved.

[0035] Please refer to Figure 2 、 Figures 6 to 7 , there are two fixed rods 2. The two fixed rods 2 respectively form a right triangle structure with one side of the template 1. The fixed rod 2 includes a telescopic main rod body 21, a telescopic rod 22, and a conical locking kit. A hook 23 is fixed at the top of the main rod body 21. The telescopic rod 22 is slidably arranged at the bottom end of the main rod body 21. The telescopic rod 22 is locked by generating a radial clamping force through a screwing action. The conical locking kit includes a clamping sleeve 24 with an axial gap and a threaded sleeve. The threaded sleeve is threadedly sleeved outside the clamping sleeve 24. The clamping sleeve 24 is sleeved outside the telescopic rod 22. The taper angle of the clamping sleeve 24 is ±5°, and 4 - 6 strip-shaped deformation gaps are evenly distributed circumferentially.

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

[0037] The embodiments of the present invention have been described above, but the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of the present invention.

Claims

1. An auxiliary device for casting a ballastless track slab, comprising: The template (1), the fixing rod (2) and the auxiliary positioning mechanism (3) are characterized by: The auxiliary positioning mechanism (3) comprises a base (31), a support plate (32), a lateral adjustment component (33) with a self-locking function, two sliding seats (34) with adjustable spacing, two connecting shafts (35), and a longitudinal adjustment component (36) with a locking function; The lateral adjustment component (33) is connected to 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 arranged on the support plate (32), and the two connecting shafts (35) are correspondingly rotatably arranged on one side of the two slides (34); the longitudinal adjustment component (36) is arranged on one of the slides (34) and is transmission-connected to the corresponding connecting shaft (35) to adjust the longitudinal angle of the template (1).

2. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: The lateral adjustment assembly (33) comprises a worm wheel (331) and a worm (332) meshing with each other, the worm wheel (331) being fixedly connected to the rotating shaft of the support plate (32), and a manual operating handle being provided at the end of the worm (332).

3. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: A slide rail (321) is provided on the top of the support plate (32), and the bottoms of the two slide seats (34) are both slidably connected to the slide rail (321).

4. The auxiliary device for casting ballastless track slab according to claim 2, characterized in that: An adjusting screw (322) with bidirectional threads is provided on the top of the support plate (32), the two slide seats (34) are respectively threadedly connected to the two ends of the adjusting screw (322), and an anti-slip knob is provided at the end of the adjusting screw (322).

5. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: The longitudinal adjustment assembly (36) comprises 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 dial.

6. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: The connecting end of the connecting shaft (35) and the template (1) is provided with a threaded portion and is equipped with a locking nut to achieve detachable fixation.

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

8. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: The conical locking kit comprises a clamping sleeve (24) with an axial gap and a threaded sleeve (25), wherein the threaded sleeve (25) is threadedly sleeved on the outside of the clamping sleeve (24), and the clamping sleeve (24) is sleeved on the outside of the telescopic rod (22).

9. The auxiliary device for casting ballastless track slab according to claim 1, characterized in that: The taper angle of the clamping sleeve (24) is 15-30°, and 4-6 deformation gaps are evenly distributed in the circumferential direction.

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

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