Ballastless track embedded sleeve multi-plate type universal fixture

Abstract

The invention discloses a ballastless track embedded sleeve multi-plate type universal fixture which comprises a fixture A and a fixture B. The fixture A comprises a first bottom plate, two first vertical rods are fixedly connected to the top of the first bottom plate, and two first transverse rods are fixedly connected to the left end of the top of the first bottom plate. When a cast-in-place beam is integrally cast in place, a clamp A and a clamp B are connected into a whole through bolts, starting and ending positions of a ballast bed axis, a first protection plate, a first transverse rod, a first bottom plate, a first vertical rod, a second vertical rod, a second bottom plate and a second transverse rod are arranged on site, and two persons lift and place the clamp A and the clamp B to design positions to center a starting embedded hole; when sleeve embedding and lower plate construction are carried out according to hole position numbers of preformed holes, sequentially-connected hole positions (P5600 continuous, P4925 continuous and P4856 continuous) are connected and centered with an upper plate embedded sleeve through M16 bolts, embedding of a next base is started, and when cantilever segmental construction is adopted, a clamp A and a clamp B are adopted to be separated and alternately used.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed railway construction equipment, in particular to a multi-plate universal clamp for a ballastless track pre-embedded sleeve. Background Art

[0002] The main principle of CRTSⅢ track slab formwork is to form a composite integral structure with the track slab and the filling layer of self-compacting concrete to jointly bear the train load. The track slab and the filling layer of self-compacting concrete are reinforced and connected with "gate-type reinforcement". An intermediate isolation layer is set between the filling layer of self-compacting concrete and the base plate, and the upper limit groove of the base plate is used for limiting. Among them, the key process is to fix the CRTSⅢ track slab at the designed position by pouring a supporting layer (base) on the foundation surface, connect the track slab and the supporting layer as a whole by pouring self-compacting concrete, and fix the slab at the designed position by self-compacting concrete. An isolation layer is set between the base and the self-compacting concrete for easy maintenance. There are four types of CRTSⅢ ballastless track slabs for high-speed railways, namely P5600, P4925, P4856 and P3710 (rarely seen, not considered). Different types of slabs have different The ballastless track roadbed with different beam types is composed of a combination. The base is connected to the beam surface through a pre-embedded sleeve on the beam surface. The traditional sleeve pre-embedded construction method is to embed it through the on-site measurement method by manual wire pulling, which has the following disadvantages: 1. It consumes a lot of manpower and the construction speed is slow; 2. The spacing between the pre-embedded sleeves varies, and the on-site measurement and construction are greatly affected by human factors, which is prone to errors; 3. The pre-embedded height is uneven, the line shape is poor, and the degree of construction standardization is low; 4. The cantilever cast-in-place beam section is generally 3-4m, and there is a plate type discontinuity between each construction between the sections, and the construction of the lower section is prone to errors. At the same time, the pre-embedded sleeve is perpendicular to the bearing rail surface and is inclined at 1:40 with the bottom mold. The positioning accuracy control and measurement control are difficult, the demoulding resistance is large, and the template has high rigidity, large vibration force, and high frequency, which is easy to produce stress concentration, causing weld cracking and template deformation. For this reason, we propose a ballastless track pre-embedded sleeve multi-plate universal fixture. Summary of the invention

[0003] The object of the present invention is to provide a ballastless track embedded sleeve multi-plate universal fixture to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ballastless track embedded sleeve multi-plate universal fixture, including a fixture A and a fixture B, the fixture A includes a first base plate, the top of the first base plate is fixedly connected with two first vertical rods, the left end of the top of the first base plate is fixedly connected with two first cross rods, and the first cross rod, the first base plate and the outer sides of the top of the first vertical rod are all fixedly connected with a first protective plate, the fixture B includes a second base plate, the left end of the top of the second base plate is fixedly connected with three second vertical rods, the right end of the top of the second base plate is fixedly connected with two second cross rods, and the outer sides of the second vertical rod, the second base plate and the second cross rod are all fixedly connected with a second protective plate, and the inner surfaces of the first protective plate, the first cross rod, the first base plate and the first vertical rod, as well as the second vertical rod, the second base plate and the second cross rod are all provided with reserved holes.

[0005] Preferably, the left side of the second cross bar is fixedly connected to the second vertical bar at the rightmost end, and the right side of the first cross bar is fixedly connected to the first vertical bar at the leftmost end.

[0006] Preferably, the first bottom plate and the second bottom plate have the same width, and the two first cross bars and the two second cross bars are arranged horizontally.

[0007] Preferably, the outer sides of the first protective plate, the first crossbar, the first bottom plate and the first vertical bar, and the second vertical bar, the second bottom plate, the second crossbar and the second protective plate are all coated with a protective layer, and the protective layer includes a nano chromium oxide coating and a tungsten carbide coating.

[0008] Preferably, the tungsten carbide coating is coated on the outer sides of the first protective plate, the first crossbar, the first bottom plate and the first vertical bar, and the second vertical bar, the second bottom plate, the second crossbar and the second protective plate, and the nano chromium oxide coating is coated on the other side of the tungsten carbide coating.

[0009] Preferably, the nano-chromium oxide coating and the tungsten carbide coating have the same thickness, and the thickness of the tungsten carbide coating is one hundred to two hundred and fifty microns.

[0010] Preferably, each reserved hole is numbered, and the reserved holes on the surfaces of the first protective plate, the first crossbar, the first bottom plate and the first vertical bar, and the second vertical bar, the second bottom plate and the second crossbar are marked with different colors.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. When the cast-in-place beam is cast in situ as a whole, the fixture A and the fixture B are connected by bolts to form a whole. The track bed axis, the first protective plate, the first cross bar, the first bottom plate and the first vertical bar, as well as the second vertical bar, the second bottom plate and the second cross bar are measured and set on site. Two people lift the fixture A and the fixture B to the designed position to center the starting embedded hole, and the hole position number of the reserved hole is embedded with the sleeve. When the next plate is constructed, the connecting hole position (P5600 continuation, P4925 continuation, P4856 continuation) is connected to the upper plate through M16 bolts. After the pre-embedded sleeves of the first plate are connected and centered, the next base is embedded. When cantilever segmented construction is adopted, fixture A and fixture B are used separately and alternately. If fixture A is used in the previous stage, fixture B is used in the next segment. This can achieve precise elevation control, is not affected by strong winds, is simple to operate, accurately identify the hole position, save construction time, has a small size, light weight, high operability, can be recycled, is easy to promote, saves resources, and is suitable for the three plate types of P5600, P4856, and P4925.

[0013] 2. The present invention provides a protective layer, which includes a nano-chromium oxide coating that can perform a first layer of wear-resistant protection treatment on the first protective plate, the first cross bar, the first bottom plate and the first vertical bar, as well as the second vertical bar, the second bottom plate, the second cross bar and the second protective plate, and the tungsten carbide coating can perform a second layer of wear-resistant protection treatment on the first protective plate, the first cross bar, the first bottom plate and the first vertical bar, as well as the second vertical bar, the second bottom plate, the second cross bar and the second protective plate after the nano-chromium oxide coating is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the first viewing angle state;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in a second viewing angle state;

[0016] Figure 3 Schematic diagram of the protective layer structure of the present invention.

[0017] In the figure: fixture A, first protective plate 11, first cross bar 12, first bottom plate 13, first vertical bar 14, fixture B, second vertical bar 21, second bottom plate 22, second cross bar 23, second protective plate 24, reserved hole 3, protective layer 4, nano chromium oxide coating 41, tungsten carbide coating 42. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The components of the fixture A, the first protective plate 11, the first cross bar 12, the first base plate 13, the first vertical bar 14, the fixture B, the second vertical bar 21, the second base plate 22, the second cross bar 23, the second protective plate 24, the reserved hole 3, the protective layer 4, the nano-chromium oxide coating 41 and the tungsten carbide coating 42 of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0020] Embodiment 1:

[0021] See also Figure 1 and Figure 2, provides the following technical solution, specifically disclosed: including a fixture A and a fixture B, the fixture A includes a first bottom plate 13, the top of the first bottom plate 13 is fixedly connected to two first vertical rods 14, the left end of the top of the first bottom plate 13 is fixedly connected to two first cross bars 12, and the outer sides of the first cross bars 12, the first bottom plate 13 and the top of the first vertical rod 14 are all fixedly connected to a first protective plate 11, the fixture B includes a second bottom plate 22, the left end of the top of the second bottom plate 22 is fixedly connected to three second vertical rods 21, the right end of the top of the second bottom plate 22 is fixedly connected to two second cross bars 23, and the second vertical rods 21 and the second bottom plate 22 The outer sides of the second cross bar 23 are fixedly connected with a second protective plate 24, and the inner surfaces of the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, the second vertical bar 21, the second bottom plate 22 and the second cross bar 23 are all provided with reserved holes 3, the left side of the second cross bar 23 is fixedly connected to the second vertical bar 21 at the rightmost end, and the right side of the first cross bar 12 is fixedly connected to the first vertical bar 14 at the leftmost end, the first bottom plate 13 and the second bottom plate 22 have the same width, and the two first cross bars 12 and the two second cross bars 23 are horizontally arranged, each reserved hole 3 is numbered, and the first protective plate 11. The reserved holes 3 on the surfaces of the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22 and the second cross bar 23 are marked with different colors. When the cast-in-place beam is cast in situ as a whole, the fixture A and the fixture B are connected by bolts to form a whole. The track bed axis, the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22 and the second cross bar 23 are measured and set on site. Two people lift the fixture A and the fixture B to the designed position to center the starting embedded hole, and the hole position number of the reserved hole 3 is embedded with a sleeve. When the next plate is constructed, Connect and align the connecting holes (P5600 continuation, P4925 continuation, P4856 continuation) with the embedded sleeve of the upper plate through M16 bolts, and start to embed the next base. When cantilever segmented construction is adopted, clamp A and clamp B are used separately and alternately. For example, clamp A is used in the previous stage, and clamp B is used in the next segment. This can achieve precise elevation control, is not affected by strong winds, is simple to operate, accurately identify the hole positions, save construction time, have a small size, light weight, high operability, and can be recycled. It is easy to promote and save resources, and is suitable for the three types of plates: P5600, P4856, and P4925.

[0022] Embodiment 2:

[0023] See also Figure 3, provides the following technical solution, specifically discloses: the outer sides of the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24 are coated with a protective layer 4, and the protective layer 4 includes a nano-chromium oxide coating 41 and a tungsten carbide coating 42, the tungsten carbide coating 42 is coated on the outer sides of the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24, and the nano-chromium oxide coating 41 is coated on the other side of the tungsten carbide coating 42, The coating 41 and the tungsten carbide coating 42 have the same thickness, and the thickness of the tungsten carbide coating 42 is one hundred to two hundred and fifty microns. The nano-chromium oxide coating 41 can perform a first layer of wear-resistant protection treatment on the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24, and the tungsten carbide coating 42 can perform a second layer of wear-resistant protection treatment on the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24 after the nano-chromium oxide coating 41 is damaged.

[0024] The working principle of the present application is as follows: when the cast-in-place beam is cast in situ as a whole, the fixture A and the fixture B are connected by bolts to form a whole. The track bed axis, the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14, as well as the starting and ending positions of the second vertical bar 21, the second bottom plate 22 and the second cross bar 23 are measured and set on site. Two people lift the fixture A and the fixture B to the designed position to center the starting embedded hole, and the hole position number of the reserved hole 3 is embedded with the sleeve. When the next plate is constructed, the connecting hole positions (P5600 continued, P4925 continued, P4856 continued) are connected and centered with the embedded sleeve of the upper plate by M16 bolts, and the next base is embedded. When cantilever segmented construction is adopted, the fixture A and the fixture B are used separately and alternately. For example, the fixture A is used in the upper stage, and the fixture B is used in the next segment, so that the elevation control can be precise and not affected. The invention is not affected by strong wind weather, has simple operation, accurate hole position identification, saves construction time, has small size, light weight, high operability, recycling, easy to promote, saves resources, and is suitable for the three types of plates of P5600, P4856 and P4925. A protective layer 4 is set, and the nano-chromium oxide coating 41 included therein can perform a first layer of wear-resistant protection treatment on the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14 as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24, and the tungsten carbide coating 42 can perform a second layer of wear-resistant protection treatment on the first protective plate 11, the first cross bar 12, the first bottom plate 13 and the first vertical bar 14 as well as the second vertical bar 21, the second bottom plate 22, the second cross bar 23 and the second protective plate 24 after the nano-chromium oxide coating 41 is damaged.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ballastless track embedded sleeve multi-plate universal fixture, comprising a fixture A and a fixture B, characterized in that: The fixture A comprises a first bottom plate (13), the top of the first bottom plate (13) is fixedly connected to two first vertical rods (14), the left end of the top of the first bottom plate (13) is fixedly connected to two first cross rods (12), and the outer sides of the tops of the first cross rods (12), the first bottom plate (13) and the first vertical rods (14) are fixedly connected to a first protective plate (11), and the fixture B comprises a second bottom plate (22), the left end of the top of the second bottom plate (22) is fixedly connected to three second vertical rods (21), the right end of the top of the second bottom plate (22) is fixedly connected to two second cross bars (23), and the outer sides of the second vertical bar (21), the second bottom plate (22) and the second cross bar (23) are fixedly connected to a second protective plate (24), and the inner surfaces of the first protective plate (11), the first cross bar (12), the first bottom plate (13) and the first vertical bar (14) and the second vertical bar (21), the second bottom plate (22) and the second cross bar (23) are all provided with reserved holes (3).

2. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 1, characterized in that: The left side of the second cross bar (23) is fixedly connected to the second vertical bar (21) at the rightmost end, and the right side of the first cross bar (12) is fixedly connected to the first vertical bar (14) at the leftmost end.

3. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 1, characterized in that: The first bottom plate (13) and the second bottom plate (22) have the same width, and the two first cross bars (12) and the two second cross bars (23) are arranged horizontally.

4. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 1, characterized in that: The outer sides of the first protective plate (11), the first crossbar (12), the first bottom plate (13) and the first vertical bar (14), as well as the second vertical bar (21), the second bottom plate (22), the second crossbar (23) and the second protective plate (24) are all coated with a protective layer (4), and the protective layer (4) comprises a nano chromium oxide coating (41) and a tungsten carbide coating (42).

5. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 4, characterized in that: The tungsten carbide coating (42) is coated on the outer sides of the first protective plate (11), the first crossbar (12), the first bottom plate (13) and the first vertical bar (14), as well as the second vertical bar (21), the second bottom plate (22), the second crossbar (23) and the second protective plate (24), and the nano chromium oxide coating (41) is coated on the other side of the tungsten carbide coating (42).

6. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 4, characterized in that: The thickness of the nano chromium oxide coating (41) and the tungsten carbide coating (42) are the same, and the thickness of the tungsten carbide coating (42) is one hundred to two hundred and fifty micrometers.

7. The multi-plate universal fixture for embedded sleeve of ballastless track according to claim 1, characterized in that: Each reserved hole (3) is numbered, and the reserved holes (3) on the surfaces of the first protective plate (11), the first crossbar (12), the first bottom plate (13) and the first vertical bar (14), and the second vertical bar (21), the second bottom plate (22) and the second crossbar (23) are marked with different colors.

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