Trolley for controlling ditch bottom elevation of subway prefabricated track slab ballast bed ditch

Abstract

The utility model provides a trolley for controlling the ditch bottom elevation of a subway prefabricated track slab ballast bed ditch. The trolley comprises a support, supporting legs and track wheel sets, wherein the supporting legs are vertically and symmetrically arranged on the left side and the right side of the support, and the track wheel sets are symmetrically arranged on the left side and the right side of the support. The supporting leg comprises a shovel foot, a supporting column vertically arranged on the shovel foot and a transverse rod arranged on the supporting column and connected with the supporting column and the support in a sliding mode. The control trolley can effectively control the accuracy and smoothness of the elevation of the ditch bottom of the ditch, the plastering frequency is reduced to a great extent, waste of manpower and materials caused by repeated reworking is avoided, and the work efficiency and safety of concrete construction are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated track slab ditch construction technical field, concretely relates to a control trolley for subway prefabricated track slab ballast bed ditch bottom elevation. BACKGROUND

[0002] With the continuous acceleration of urbanization process in China in recent years, the city scale expands unceasingly, the city population grows rapidly, and the contradiction between supply and demand of city traffic is increasingly intense, and through developing large-capacity rail transit to alleviate the public traffic congestion, has become the effective measure to solve the contradiction between supply and demand of city traffic. City rail transit has become the inevitable way of city transportation and city travel.

[0003] According to the analysis of subway outage demand and the research of existing construction technology, it can be concluded that:

[0004] Station and interval ballast bed ditch drainage is often used as slope drainage, and there is often water accumulation at many places of interval and station ditch, by using the favorable condition of track ballast rail slope, the self-developed ditch bottom elevation control trolley is used to serve the on-site ditch construction, and the problem of no water accumulation in station and interval ballast bed ditch is ensured.

[0005] Due to the structure characteristics of prefabricated track slab ballast bed, the construction of ditch on both sides of the ballast bed is usually carried out after the completion of the ballast bed pouring, in order to meet the construction of station rectangular ditch and interval L-shaped ditch, there are three conventional methods:

[0006] One is to draw lessons from the double shoulder pole water carrying model, take a steel square tube, place it on the rail surface, weld a vertical square tube at both ends of the square tube in the position measured according to the width of the ballast bed, weld a steel plate at the bottom of the square tube, the plane width of which matches the width of the ditch, and the steel plate surface and the ditch bottom surface are perpendicular. When encountering different ditch bottom elevations and different ballast bed widths, the device needs to be reprocessed, which causes waste of materials and labor; moreover, it cannot effectively move forward and backward on the track, because a single steel pipe is easy to scratch the rail and has poor stability, so it is time-consuming and laborious, and a large amount of concrete is also wasted, which increases the cost, and the quality of the ditch is also poor.

[0007] Second, the small trolley frame model of the track material is used as reference, a square tube with a length of two steel rails is welded at the lateral center position, a hole is opened in the square tube and a nut is welded to install a bolt, two square tubes with a slightly smaller caliber than the previous square tube are taken, and a square tube is welded at the end of the two square tubes and a steel plate is welded at the bottom, the width of the steel plate is consistent with the width of the water ditch, although it can adapt to different widths of the track bed, but it cannot effectively push and spread the concrete on the bottom, and manual spreading is still needed, which is time-consuming and labor-intensive, and cannot meet the requirements when different water ditch elevations are encountered, the two end square tubes are in a sleeve insertion structure and the bottom is welded with a steel plate, and in order to facilitate the workers to transfer and ensure safety, light square tubes are used, so that horizontal deformation may occur, the completed surface of the water ditch bottom is uneven, water may accumulate in the water ditch, and rework is necessary, which is time-consuming and labor-intensive and prolongs the construction period.

[0008] Third, the rail elevation and the ditch bottom surface elevation given by the water ditch construction design drawing are input into the total station measurement system, then the total station is taken to the site to set up a station, the actual civil reserved base elevation of the given design line center offset position is measured, then the relative elevation difference of this section is displayed in the total station and recorded and saved in the system, and the measurement point positions are marked. In this way, the data of the construction section to be constructed are measured and exported one by one. The relative difference data exported by the right-angle ruler is compared with the corresponding measurement point marks made in advance, and the water ditch bottom surface control elevation points are marked on the ditch bottom side wall, i.e. the prefabricated track plate base side, every 4.7 meters. Similarly, the water ditch bottom surface control elevation points of a certain construction section are marked one by one. All the points are connected by the ink line by using the ink bucket line method, and this line is the water ditch bottom surface elevation line. This method needs to be coordinated by multiple technical personnel, and instruments and equipment are also needed, which causes the occupation of equipment resources and cannot be better and more valuable, and the project cost is increased. Moreover, the ditch bottom surface elevation ink line is on the base side, which cannot be directly observed by the naked eye on site and is easily covered when the bottom concrete is poured, which affects the control of the ditch bottom surface elevation. However, multiple workers are needed to spread and smooth the bottom, which is time-consuming and labor-intensive, and cannot reflect the management concept of improving the on-site construction efficiency. Practical new type content

[0009] The utility model aims at providing a control trolley for the ditch bottom elevation of a subway prefabricated track plate track bed water ditch, to solve the above-mentioned problems of the prior art.

[0010] In order to achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0011] A control trolley for subway prefabricated track slab ballast ditch bottom elevation, comprising a support, a support leg vertically and symmetrically arranged on the left and right sides of the support, and a track wheel set symmetrically arranged on the left and right sides of the support; the support leg comprises a shovel foot, a support column vertically arranged on the shovel foot, and a cross bar arranged on the support column and slidingly connected with the support column and the support.

[0012] Further, the support comprises two parallel arranged cross beams, a rectangular frame with the lower two corners fixedly connected with the middle positions of the cross beams, a cable-stayed beam connecting the upper two corners of the rectangular frame and the end portions of the cross beams, and a plurality of reinforcing beams connecting the two cross beams or the cross beam and the cable-stayed beam; the track wheel set is fixedly arranged on the lower end surface of the cross beam.

[0013] Further, the two ends of the cross beam are provided with a waist-shaped hole, and the cross bar is fixedly connected and transversely adjusted with the waist-shaped hole through a connecting bolt.

[0014] Further, the track wheel set adopts a T-shaped nylon half-edge track wheel with a brake, and the axial direction of the T-shaped nylon half-edge track wheel is arranged in parallel with the cross beam.

[0015] Further, the shovel foot comprises a bottom plate, a front stop shoulder and a rear stop shoulder fixedly arranged on the front and rear ends of the bottom plate, the cross bar is sleeved on the support column and is clamped and fixed and longitudinally adjusted through an upper shaped nut and a lower run nut sleeved on the support column.

[0016] According to the above technical solution, compared with the prior art, the utility model has the following technical advantages:

[0017] The control trolley can adapt to different widths of prefabricated track slabs of subway stations, rectangular tunnels and circular tunnels through transverse and longitudinal adjustment, and can also meet the needs of different prefabricated track slab ballast ditch bottom elevations on site, without disassembling the equipment, only needing to slightly adjust the connecting fixed bolts and nuts, which is simple, convenient and easy to operate, and reduces the working intensity of workers;

[0018] The control trolley follows the lightweight principle, greatly meets the lightweight demand of facilities on the construction site, the main body of the trolley adopts a steel truss structure, the structure is reasonably stressed, the main components meet the strength, rigidity and stability requirements, the construction precision is ensured, and the consumption of materials is maximally saved, thereby saving the cost;

[0019] The control trolley adopts a T-shaped nylon half-edge track wheel to ensure the safety of on-site construction, guarantees the safety of construction personnel even in a large slope section, and also protects other on-site construction personnel and materials, effectively prevents accidents, and reduces the operating cost of enterprises;

[0020] The utility model discloses a control dolly's support leg adopts spade foot and double support post fixed, not only can push the concrete higher than the ditch bottom elevation and be more stable in the use process, thereby make spade foot reach the phenomenon such as swing of once push flat ditch bottom surface, effectively control the accuracy and smoothness of ditch bottom elevation, largely reduce the number of times of finishing, avoid the waste of manual and material caused by multiple rework, improve the concrete construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is the structure schematic diagram of the spade foot of the utility model;

[0023] Figure 3 It is the construction effect drawing of the utility model;

[0024] In the drawing: 1, support;11, crossbeam;12, rectangular frame;13, inclined beam;14, reinforcing beam;2, support leg;21, spade foot;211, bottom plate;212, front stop shoulder;213, rear stop shoulder;22, support post;23, cross rod;3, track wheel set;4, waist type hole. DETAILED DESCRIPTION

[0025] The preferred embodiment of the utility model is described in detail below in combination with the drawings.

[0026] As Figure 1 The control dolly for subway prefabricated track slab bed ditch bottom elevation shown in the drawing, including support 1, vertical and symmetrically arranged on the left and right sides of the support 1 support leg 2 and symmetrically arranged on the left and right sides of the support 1 track wheel set 3;The support leg 2 includes spade foot 21, two support posts 22 vertically and parallelly arranged on the spade foot 21 and the cross rod 23 arranged on the two support posts 22 and slidingly connected with the two support posts 22 and the support 1.

[0027] Specifically, the support 1 of the preferred embodiment includes two parallelly arranged crossbeams 11, a rectangular frame 12 with the lower two corners fixedly connected with the middle positions of the crossbeams 11, an inclined beam 13 connecting the upper two corners of the rectangular frame 12 and the end portions of the crossbeams 11, and a plurality of reinforcing beams 14 connecting the two crossbeams 11 or the crossbeams 11 and the inclined beam 13;The track wheel set 3 is fixedly arranged on the lower end surface of the crossbeam 11;The two ends of the crossbeam 11 are provided with waist type holes 4, and the cross rod 23 is fixedly connected and transversely adjusted with the waist type holes 4 through connecting bolts;The track wheel set 3 is located between the two support legs 2 and includes two groups of four T-shaped nylon half-edge track wheels with brakes, the axial direction of the T-shaped nylon half-edge track wheels is parallelly arranged with the crossbeam 11, and the track wheel set 3 is connected with the two support legs 2 through the cross rod 23. Figure 2As shown, the shovel foot 21 includes a bottom plate 211 and front and rear stop shoulders 212 and 213 fixedly arranged at the front and rear ends of the bottom plate 211, and the control trolley is moved forward or backward, and the concrete is moved forward or backward by the stop shoulders, and the ditch bottom is pushed flat to the troweling level; the cross rod 23 is sleeved on the two supports 22 and is clamped and fixed and longitudinally adjusted by the upper and lower nuts sleeved on the supports 22.

[0028] The overall structure of the utility model follows the lightweight principle, greatly meets the lightness demand of the construction site on the facility, the trolley main body adopts the steel truss structure, the structure stress is reasonable, the main component meets the strength, rigidity and stability requirement, guarantees the construction precision at the same time, and maximally saves the consumables and saves the cost.

[0029] As Figure 3 shown, in the specific use, the construction by using the control trolley of the preferred embodiment comprises the following steps:

[0030] S1, the control trolley is transported to the construction site, and is placed on the rail surface, and whether the brake effect of the T-shaped nylon half rail wheel is checked by manual operation;

[0031] S2, according to the interval or station precast slab track bed width, the position of the supporting leg in the waist-shaped hole is adjusted by connecting bolts, when the precast slab track bed width demand is met, the connecting bolts are tightened;

[0032] S3, based on the rail surface elevation after the precast slab track bed is poured, the position of the trolley supporting leg meeting the ditch bottom elevation is measured by the aid of the meter ruler according to the ditch bottom elevation given by the design, the longitudinal displacement of the trolley supporting leg is adjusted by the up and down adjustment mechanism of the lower and upper nuts to reach the height of the on-site construction, and the lower and upper nuts are tightened after the high and low positions are determined;

[0033] S4, the tire type concrete tank truck transportation mode is used on site, the concrete is transported to the site, and the concrete is unloaded into the ditch on both sides of the precast slab track bed through the tank truck chute;

[0034] S5, the control trolley is pushed forward or backward, and the concrete is moved forward or backward by the shovel foot stop shoulder, and the ditch bottom is pushed flat to the troweling level.

[0035] The utility model discloses control dolly passes through horizontal and longitudinal adjustment, can adapt to the different width of prefabricated slab bed of subway station, rectangular tunnel and circular tunnel, satisfy the demand of different prefabricated slab bed ditch bottom elevation on the spot simultaneously, need not to dismantle equipment, only need to fine adjustment connecting fixed bolt nut, simple and convenient easy operation, reduce the working strength of worker, can effectively control the accuracy and smoothness of ditch bottom elevation through spade foot, reduce the number of finishing to a great extent, avoid the waste of manual work and material caused by multiple rework, improve concrete construction efficiency.

[0036] The above-described embodiments are merely preferred embodiments of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements to the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A control trolley for subway prefabricated track slab ballast ditch bottom elevation, characterized in that, The support frame, the vertical and symmetrically arranged supporting legs on the left and right sides of the support frame, and the track wheel groups symmetrically arranged on the left and right sides of the support frame are included. The supporting legs include spade feet, vertical supporting columns arranged on the spade feet, and horizontal rods arranged on the supporting columns and slidingly connected with the supporting columns and the support frame.

2. The control trolley for the subway prefabricated track slab ballast ditch bottom elevation according to claim 1, characterized in that, The support frame includes two parallel horizontal beams, a rectangular frame with lower ends fixedly connected with the middle positions of the horizontal beams, a diagonal beam connecting the upper corners of the rectangular frame with the ends of the horizontal beams, and a plurality of reinforcing beams connecting the two horizontal beams or the horizontal beams and the diagonal beam; the track wheel groups are fixedly arranged on the lower end faces of the horizontal beams.

3. The control trolley for subway prefabricated track slab ballast ditch bottom elevation according to claim 2, characterized in that, The two ends of the horizontal beams are provided with waist-shaped holes, and the horizontal rods are fixedly connected with the waist-shaped holes through connecting bolts for transverse adjustment.

4. The control trolley for the subway prefabricated track slab bed water ditch bottom elevation according to claim 2, characterized in that, The track wheel groups adopt T-shaped nylon half-track wheels with brakes, and the axial direction of the T-shaped nylon half-track wheels is parallel to the horizontal beams.

5. The control trolley for subway prefabricated track slab ballast ditch bottom elevation according to claim 1, characterized in that, The spade feet include a bottom plate, front and rear stop shoulders fixedly arranged on the front and rear ends of the bottom plate, and the horizontal rods are sleeved on the supporting columns and fixedly clamped and longitudinally adjusted through upper and lower nuts sleeved on the supporting columns.

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