Precast track slab end formwork support device

Abstract

The utility model relates to a prefabricated track slab end template support device, include: the outer pipe cover, a pair of support plates that are parallel to each other, a pair of support plates are respectively along the direction of parallel to the radial direction of outer pipe cover and are supported in the both sides of outer pipe cover, the distance between a pair of support plates is adjustable, the inner pipe cover is located in the outer pipe cover in the radial direction of outer pipe cover position adjustablely, the both sides of inner pipe cover outer surface each hinge has at least one connecting rod for moving the support plate of one side to adjust the distance between a pair of support plates, the both sides of outer pipe cover along its radial direction each has at least one movable slot for the connecting rod to go out and move, and the connecting rod goes out movable slot and is hinged to the surface of the support plate of corresponding one side in the end part.

Description

Technical Field

[0001] This utility model relates to the field of track construction, specifically to a precast track slab end formwork support device. Background Technology

[0002] In recent years, with the rapid development of urban rail transit, precast track slab ballastless track beds have been widely used in track construction due to their advantages such as high construction efficiency, good structural stability, and long service life. After the precast track slabs are constructed, a self-compacting concrete filling layer is to be built at the bottom. Formwork for this layer needs to be erected at the bottom of the precast track slabs. To ensure the stability of the formwork, supports need to be installed in the joints between adjacent precast track slabs to support the formwork from the side. However, due to the narrow joint width of the track slabs (only about 20cm), formwork support is difficult. Current technology often uses butterfly clamps in conjunction with wooden blocks for support. Wooden blocks are inserted into the clamping part of the butterfly clamps to ensure that the clamps open and support the formwork on both sides. However, this method is limited by the size of the wooden blocks, making it difficult to accurately position the butterfly clamps between the formwork on both sides, resulting in poor support and easily leading to end bulging and deformation of the concrete structure. Utility Model Content

[0003] This utility model discloses a precast track slab end template support device. By adjusting the distance between a pair of support plates, a pair of support plates can be accurately supported on the template under the precast track slab, resulting in good support effect.

[0004] This utility model discloses a precast track slab end template support device, comprising: A pair of support plates are arranged in parallel and spaced apart, and are used to abut against the opposite inner sides of the bottom template of two adjacent precast track slabs; An adjustment mechanism is movably connected between a pair of support plates and is used to adjust the distance between the pair of support plates. The adjustment mechanism includes a telescopic component and two sets of connecting rods. The telescopic component can telescopically move along a direction perpendicular to the line connecting the pair of support plates. The two sets of connecting rods are respectively hinged between the telescopic component and the pair of support plates and can drive the pair of support plates to move relative to each other as the telescopic component telescopically moves.

[0005] A further improvement of this utility model is that the telescopic component includes: an outer tube, the top of which has a first opening, a telescopic rod that is telescopically inserted through the first opening, the telescopic rod extending into the outer tube to form an extension section, two sets of connecting rods with one end hinged to the extension section and the other end hinged to the surface of the support plate, and the outer tube having a movable groove for the connecting rod to extend and move.

[0006] A further improvement of this utility model is that the first opening is a threaded hole, and the telescopic rod includes: a screw rod, which is screwed into the first opening; an inner sleeve that is rotatably engaged with the bottom of the screw rod through a snap-fit ​​structure and together with the bottom of the screw rod forms the inner sleeve of the extension section; two sets of connecting rods are hinged to the inner sleeve; by adjusting the screw rod's engagement depth relative to the first opening, the inner sleeve is driven to move axially relative to the outer sleeve, thereby causing the two sets of connecting rods to drive a pair of support plates to move relative to each other.

[0007] A further improvement of this utility model is that the snap-fit ​​structure includes: a rising washer fixed to the top end of the inner sleeve, the rising washer having a second opening; a descending washer fixed to the inner wall of the inner sleeve; and a limiting member coaxially fixed to the bottom end of the screw, the limiting member being a circular plate or a circular ring; wherein, The bottom end of the screw passes through the second opening and extends between the rising pad and the falling pad. The outer diameter of the limiting member is greater than the diameter of the second opening and smaller than the inner diameter of the inner sleeve.

[0008] A further improvement of this utility model is that a nut for manually rotating the screw is fixed to the top of the screw.

[0009] This utility model discloses a precast track slab end template support device. By controlling the position of the inner sleeve inside the outer sleeve, the angle of the connecting rod is adjusted, thereby driving the support plate to move and adjusting the distance between a pair of support plates. This device can accurately support a pair of support plates on the template under the precast track slab, resulting in good support effect. Attached Figure Description

[0010] Figure 1 This is a side sectional view of the present invention; Figure 2 This is a top sectional view of the present invention; Figure 3 This is a perspective view of the present utility model; Figure 4 This is a top view of the present invention during installation; In the diagram: 1. Outer sleeve; 2. Inner sleeve; 3. Connecting rod; 4. Screw; 5. Nut; 61. Rising washer; 62. Limiting component; 63. Lowering washer; 7. Support plate; 8. Precast track slab; 9. Threaded section; 10. Movable groove. Detailed Implementation

[0011] like Figures 1-4 As shown, a precast track slab end template support device is characterized by comprising: A pair of support plates 7 are arranged in parallel at intervals and are used to abut against the opposite inner sides of two adjacent prefabricated track slabs 8 respectively; An adjustment mechanism is movably connected between a pair of support plates 7 and is used to adjust the distance between the pair of support plates 7. The adjustment mechanism includes a telescopic component and two sets of connecting rods 3. The telescopic component can telescopically move along a direction perpendicular to the line connecting the pair of support plates 7. The two sets of connecting rods 7 are respectively hinged between the telescopic component and the pair of support plates 7, and can drive the pair of support plates 7 to move relative to each other as the telescopic component telescopically moves.

[0012] like Figure 2 As shown, the telescopic assembly includes: an outer tube 1, with a first opening at the top of the outer tube 1, a telescopic rod that is telescopically inserted through the first opening, the telescopic rod extending into the outer tube 1 to form an extension section, two sets of connecting rods 3 with one end hinged to the extension section and the other end hinged to the surface of the support plate 7, and a movable groove 10 for the connecting rods 3 to extend and move on the outer tube 1.

[0013] like Figure 2 As shown, the first opening is a threaded hole, and the telescopic rod includes: a screw 4, which is screwed into the first opening; an inner sleeve 2 that is rotatably locked to the bottom of the screw 4 through a snap-fit ​​structure and together with the bottom of the screw 4 forms the extension section; two sets of connecting rods 3 are hinged to the inner sleeve 2; by adjusting the screw 4's engagement depth relative to the first opening, the inner sleeve 2 is driven to move axially relative to the outer tube 1, thereby causing the two sets of connecting rods 3 to drive a pair of support plates to move relative to each other.

[0014] Better, such as Figure 2 As shown, the threaded hole has a certain thickness to form the threaded segment 9.

[0015] like Figure 2 As shown, the snap-fit ​​structure includes: a rising washer 61 fixed to the top of the inner sleeve 2, the rising washer 61 having a second opening; a descending washer 63 fixed to the inner wall of the inner sleeve 2; and a limiting member 62 coaxially fixed to the bottom of the screw 4, the limiting member 62 being a circular plate or a circular ring; wherein, The bottom end of the screw 4 passes through the second opening and extends between the rising pad 61 and the falling pad 63. The outer diameter of the limiting member 62 is greater than the diameter of the second opening and less than the inner diameter of the inner sleeve 2.

[0016] In this embodiment, as Figure 1 , Figure 3 As shown, four pairs of connecting rods 3 are hinged to the outer side of the inner sleeve 2. Two pairs of connecting rods 3 are provided on each side of the inner sleeve 2 to form a set of connecting rods 3. The four pairs of connecting rods 3 are symmetrically distributed along the four corners of the inner sleeve 2. Two movable slots 10 are opened on each side of the outer sleeve 1. Two connecting rods 3 distributed vertically are inserted in each movable slot 10.

[0017] like Figures 1-4As shown, the end of the screw 4 located outside the outer sleeve 1 is fixed with a nut 5 for manually rotating the screw 4. In this embodiment, the nut 5 is a hexagonal nut.

[0018] Better, such as Figure 4 As shown, four template support devices are set between two adjacent precast track slabs 8. In actual use, the appropriate number of template support devices can be selected according to the size of the precast track slab 8.

[0019] In use, this utility model places the device between two adjacent precast track slabs 8 and rotates the screw 4 so that the screw 4 moves downward within the threaded section 11, thereby driving the inner sleeve 2 to move downward. At this time, one end of the connecting rod 3, which is hinged to the surface of the inner sleeve 2, also descends. The other end of the connecting rod 3 can then push the support plate 7 outward until the support plate 7 is tightly attached to the templates on both sides, thus completing the support. After the pouring is completed, the template support device can be removed. When removing it, the screw 4 is rotated in the opposite direction to lift the screw 4 upward, so that the limiting part 62 at the bottom of the screw 4 contacts the rising pad 61, thereby pulling the inner sleeve 2 up. After the lifting, the connecting rod 3 also moves until the support plate 7 is released from the template. The template support device can then be removed and reused.

[0020] This utility model has the following advantages: 1. A formwork support device and its usage method for the end formwork of precast track slab ballastless track bed are provided, effectively solving the problems of high difficulty and poor adaptability of formwork support in existing technologies. The formwork support device can effectively support the formwork, preventing expansion and displacement, thereby ensuring construction quality and efficiency.

[0021] 2. The template support device of this utility model has a simple structure and is easy to operate. The components are all common building materials, easy to obtain and process. At the same time, the device is simple to use; simply rotating the hexagonal bolts is sufficient to support the template, making operation convenient and quick.

[0022] 3. The template support device of this utility model has high adaptability and flexibility, and can be flexibly adjusted according to different construction needs to adapt to track slab end templates of different sizes and shapes. This adaptability and flexibility makes this invention have broad application prospects in track construction.

[0023] 4. This utility model can also significantly reduce construction costs. Because the device has a simple structure, is easy to operate, and has high adaptability and flexibility, it can reduce material waste and labor costs during construction. At the same time, since the use of the device can improve construction quality and efficiency, it can also shorten the construction cycle and further reduce construction costs.

[0024] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precast track panel end formwork support apparatus, characterized by, include: A pair of support plates are arranged in parallel and spaced apart, and are used to abut against the opposite inner sides of the bottom template of two adjacent precast track slabs; An adjustment mechanism is movably connected between a pair of support plates and is used to adjust the distance between the pair of support plates. The adjustment mechanism includes a telescopic component and two sets of connecting rods. The telescopic component can telescopically move along a direction perpendicular to the line connecting the pair of support plates. The two sets of connecting rods are respectively hinged between the telescopic component and the pair of support plates and can drive the pair of support plates to move relative to each other as the telescopic component telescopically moves.

2. The precast track panel end formwork support apparatus of claim 1, wherein, The telescopic assembly includes: an outer tube, a first opening at the top of the outer tube, a telescopic rod that is telescopically inserted through the first opening, the telescopic rod extending into the outer tube to form an extension section, two sets of connecting rods with one end hinged to the extension section and the other end hinged to the surface of the support plate, and a movable groove on the outer tube for the connecting rod to extend and move.

3. The precast track panel end formwork support apparatus of claim 2, wherein, The first opening is a threaded hole. The telescopic rod includes: a screw rod, which is screwed into the first opening; an inner sleeve that is rotatably engaged with the bottom of the screw rod and forms the extension section together with the bottom of the screw rod; two sets of connecting rods are hinged to the inner sleeve; by adjusting the screw rod's engagement depth relative to the first opening, the inner sleeve is moved axially relative to the outer sleeve, thereby causing the two sets of connecting rods to move a pair of support plates relative to each other.

4. The precast track panel end formwork support apparatus of claim 3, wherein, The snap-fit ​​structure includes: a rising washer fixed to the top end of the inner sleeve, the rising washer having a second opening; a descending washer fixed to the inner wall of the inner sleeve; and a limiting member coaxially fixed to the bottom end of the screw, the limiting member being a circular plate or a circular ring; wherein... The bottom end of the screw passes through the second opening and extends between the rising pad and the falling pad. The outer diameter of the limiting member is greater than the diameter of the second opening and smaller than the inner diameter of the inner sleeve.

5. The precast track panel end formwork support apparatus of claim 3, wherein, The top of the screw is fixed with a nut for manual rotation.

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