Assembly type trolley for box culvert construction

Abstract

The utility model relates to the technical field of box culvert construction equipment, and discloses an assembly type trolley for box culvert construction. The inner trolley is fixedly connected in a sliding mode in the length direction of the center sliding frame, a foldable or unfoldable inner formwork is arranged on the peripheral side of the inner trolley, and the inner formwork is of a cylindrical structure with the front end and the rear end open; the two side rails are arranged in parallel to the length direction of the central sliding frame and laid on the two sides of the central sliding frame one by one; the section of the outer trolley is of an n-shaped structure, the outer trolley is fixedly connected to the rails on the two sides in a sliding mode, an outer formwork is arranged in the outer trolley and located on the peripheral side of the inner formwork, and the outer formwork and the inner formwork are matched to form a pouring space of the box culvert. The box culvert can achieve the effect of one-time integral pouring, the problem that the construction period is prolonged due to segmented construction can be effectively avoided, and the construction efficiency is improved; and the joint sealing problem is not involved in the single box culvert pouring process, and the waterproof performance and durability of the box culvert are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to box culvert construction equipment technical field, especially a kind of assembly type trolley for box culvert construction. BACKGROUND

[0002] Box culvert, a kind of structure commonly used in highway, railway, water conservancy and other underground drainage or across obstacles. It is composed of one or more square or rectangular cross section, hole body adopts reinforced concrete box-shaped pipe joint to be built into. In the process of box culvert construction, generally cast-in-place mode is used, i.e. setting bottom layer in excavated trench, pouring a layer of concrete cushion, then binding steel bar on site, supporting inner mold and outer mold. For larger box culvert, bottom plate and lower half of side wall are usually poured first, and then steel bar binding and concrete pouring of upper half of side wall and top plate are carried out after reaching a certain strength. Finally, formwork is removed after concrete reaches the strength required by design, and soil is backfilled on both sides of box culvert.

[0003] Patent with announcement number CN212316712U discloses a kind of assembly type trolley for box culvert construction, the trolley is realized the pouring of upper half of box culvert and top plate by longitudinally laying track on the box culvert bottom plate that has been poured and setting movable trolley above track. Trolley is used in cooperation with outer formwork, and is turned over by sliding on track. This design aims to improve construction efficiency and quality, and reduce the difficulty of manual operation.

[0004] However, the above scheme has the following use defects: since the construction process needs to pour lower half of side and bottom plate first, and then pour upper half of side and top plate. Concrete pouring needs to be carried out twice, which will lead to the extension of the whole construction process. This phased construction not only increases the construction period, but also may affect the overall performance of the structure due to the inconsistent setting time of concrete in different stages. In addition, multiple pouring may cause sealing problems at the joints, thereby affecting the waterproof performance and durability of box culvert. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of assembly type trolley for box culvert construction, to overcome the above-mentioned situation deficiency.

[0006] In order to achieve the above purpose, the technical scheme of the utility model is as follows: an assembly type trolley for box culvert construction, comprising:

[0007] Center sliding frame;

[0008] Internally slidingly connected along the length direction of the center sliding frame, the peripheral side of the internal trolley is provided with foldable or expandable inner formwork, and the inner formwork is in the form of a tubular structure with open ends at the front and back;

[0009] Two edge tracks arranged in parallel with the length direction of the center sliding frame, one of which is arranged on each side of the center sliding frame; and

[0010] The cross section is in the shape of a "D" character structure, and an external trolley is fixedly and slidably connected to the two edge tracks, and an external formwork is arranged inside the external trolley, and the external formwork is located on the peripheral side of the internal formwork, and the two formworks cooperatively form a pouring space of a box culvert.

[0011] Further, the center sliding frame comprises:

[0012] A support frame fixedly and slidably connected to the internal trolley along the length direction thereof; and

[0013] Two groups of telescopic support legs arranged in the vertical direction and fixedly connected to the front and rear ends of the support frame respectively, the upper end of the telescopic support leg being fixedly connected to the support frame, and the lower end of the telescopic support leg being fixedly connected to a support pad.

[0014] Further, the internal formwork comprises:

[0015] Two internal top formworks arranged in sequence along the width direction of the support frame and hingedly connected to each other;

[0016] Two internal bottom formworks arranged in sequence along the width direction of the support frame and hingedly connected to each other; and

[0017] The sides of the two internal top formworks away from each other are hingedly connected to the sides of the two internal bottom formworks away from each other respectively.

[0018] Further, the internal trolley comprises:

[0019] A sliding frame sleeved on the peripheral side of the support frame and fixedly and slidably connected to the support frame, the internal top formwork, the internal bottom formwork and the internal side formwork being enclosed on the peripheral side of the sliding frame and connected to the center sliding frame through first power telescopic rods respectively.

[0020] Further, the internal trolley further comprises:

[0021] A plurality of groups of first traveling wheels mounted on the sliding frame, the support frame being provided with a plurality of sliding rails along the length direction thereof, and the plurality of sliding rails being slidably connected to the plurality of groups of first traveling wheels one by one; and

[0022] A plurality of first positioning holes are arranged on the sliding frame, and a plurality of second positioning holes are arranged on the support frame along the length direction thereof, and the second positioning holes are detachably connected to the first positioning holes through fasteners.

[0023] Further, a plurality of stoppers are fixedly arranged on the support frame, the stoppers are located at the front and rear ends of the slide rail, and the stoppers are used for limiting the sliding displacement of the inner trolley along the length direction of the slide rail.

[0024] Further, the length of the sliding frame is less than the length of the support frame.

[0025] Further, the outer formwork comprises two outer side formworks arranged in the vertical direction and connected with the outer trolley through second power telescopic rods, the two outer side formworks are arranged in one-to-one correspondence with the two inner side formworks and are arranged on the two sides of the two inner side formworks along the width direction.

[0026] Further, the outer side formwork is connected with the inner side formwork through a pull rod.

[0027] Further, the lower end of the outer trolley is provided with two groups of second traveling wheels, the two groups of second traveling wheels are slidably connected with the two edge rails, and the second traveling wheels have a braking function.

[0028] Compared with the prior art, the utility model has at least the following advantages:

[0029] In the box culvert construction process, through the cooperation of the outer formwork and the inner formwork, the inner formwork is supported in the inner part of the outer formwork, so that the pouring space of the whole box culvert can be formed, the effect of one-time integral pouring of the box culvert is realized, the problem of prolonged construction period caused by segmented construction can be effectively avoided, and the construction efficiency is improved; the single box culvert pouring process does not involve the joint sealing problem, and the waterproof performance and durability of the box culvert are improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description can be used to obtain other drawings without creative labor for those skilled in the art.

[0031] Figure 1 It is a structural schematic view of the utility model box culvert construction assembly trolley in working condition;

[0032] Figure 2 It is a front view of the utility model box culvert construction assembly trolley in working condition;

[0033] Figure 3 It is an assembly schematic view of the utility model outer trolley and outer formwork;

[0034] Figure 4The utility model discloses a center sliding frame, internal trolley and internal template assembly sectional view

[0035] Figure 5 The utility model discloses Figure 4 The local amplification drawing of A area in the middle,

[0036] Figure 6 The utility model discloses Figure 4 The local amplification drawing of B area in the middle.

[0037] Fig. 1, center sliding frame;2, internal trolley;3, internal template;4, side rail;5, external trolley;6, external template;7, fastener;8, pull rod;9, box culvert;11, support frame;12, telescopic support leg;13, support cushion block;14, slide rail;15, second positioning hole;16, stop piece;21, sliding frame;22, first power telescopic rod;23, first walking wheel;31, internal top template;32, internal side template;33, internal bottom template;51, second walking wheel;61, external side template;62, second power telescopic rod. Specific implementation

[0038] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model.

[0039] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in conjunction with the drawings and specific implementation.

[0040] Referring to Figures 1-2 The utility model provides a kind of box culvert construction with assembly trolley, its specific structure includes center sliding frame 1, internal trolley 2, internal template 3, side rail 4, external trolley 5 and external template 6.Center sliding frame 1 is as the core support component of trolley, and its length direction is fixed with internal trolley 2 slidingly connected.Internal trolley 2 is provided with collapsible or expandable internal template 3 on the circumferential side, and internal template 3 is in the tubular structure of the opening of front and back two ends, for forming the inner wall shape of box culvert 9.Two side rail 4 is laid parallel on the both sides of center sliding frame 1, and external trolley 5 is fixedly connected on side rail 4 by the sliding device of its lower end.The section of external trolley 5 is in the structure of " " character, and its inside is provided with external template 6, and external template 6 is located on the circumferential side of internal template 3, and they are mutually matched to constitute box culvert 9 pouring space.

[0041] In the box culvert 9 construction process, through the cooperation of the outer formwork 6 and the inner formwork 3, the inner formwork 3 is supported in the inner part of the outer formwork 6, so that the pouring space of the whole box culvert 9 can be formed, the one-time integral pouring effect of the box culvert 9 can be realized, the problem of time extension caused by segmented construction can be effectively avoided, and the construction efficiency is improved; the single box culvert 9 pouring process does not involve the joint sealing problem, and the waterproof performance and durability of the box culvert 9 are improved.

[0042] In the utility model, center sliding frame 1 includes support frame 11 and two groups of telescopic support legs 12. Support frame 11 is frame structure, has stronger deformation resistance, and support frame 11 is fixedly and slidably connected with inner trolley 2 along its length direction. Telescopic support leg 12 is arranged along the vertical direction and is fixedly connected at the front and rear ends of support frame 11 respectively. The upper end of telescopic support leg 12 is fixedly connected with support frame 11, and the lower end is fixedly connected with support pad 13, which is used to adjust the height of inner trolley 2 and provide stable support. In one embodiment of the utility model, telescopic support leg 12 adopts hydraulic push rod structure.

[0043] Inner formwork 3 includes inner top formwork 31, inner bottom formwork 33 and inner side formwork 32. Two inner top formworks 31 and two inner bottom formworks 33 are arranged in sequence along the width direction of support frame 11 and are hingedly connected with each other. Inner side formwork 32 is hingedly connected to the side away from each other of inner top formwork 31 and inner bottom formwork 33. This hinged structure makes inner top formwork 31, inner bottom formwork 33 and inner side formwork 32 can be folded or unfolded as needed, which is convenient for transportation and construction operation.

[0044] Inner trolley 2 further includes sliding frame 21 fixedly and slidably connected with support frame 11. Inner top formwork 31, inner bottom formwork 33 and inner side formwork 32 are enclosed on the circumferential side of sliding frame 21 and are connected with center sliding frame 1 through first power telescopic rod 22 respectively. First power telescopic rod 22 is used to control the unfolding and folding actions of inner formwork 3, realizes the quick positioning and adjustment of inner formwork 3. In one embodiment of the utility model, first power telescopic rod 22 adopts the structure of hydraulic push rod or electric push rod.

[0045] A plurality of first walking wheels 23 are mounted on the sliding frame 21, the first walking wheels 23 adopt a single-sided wheel structure, the support frame 11 is provided with a plurality of sliding rails 14 along the length direction of the support frame 11, the sliding rails 14 adopt a strip-shaped cuboid structure and are fixedly connected to the support frame 11 in a welding manner, the walking wheels are in one-to-one sliding connection with the sliding rails 14, and stable movement of the internal trolley 2 is realized. In an embodiment of the utility model, four groups of first walking wheels 23 are mounted on the sliding frame 21, a plurality of first walking wheels 23 are arranged at intervals along the length direction of the internal trolley 2 in each group, the four groups of first walking wheels 23 are located at the upper two sides along the width direction of the internal trolley 2 and the lower two sides along the width direction of the internal trolley 2 respectively, and the four groups of first walking wheels 23 are distributed in a matrix. The sliding rails 14 are also provided with four sliding rails, and the four sliding rails 14 are in one-to-one sliding connection with the four groups of first walking wheels 23, the upper sliding rails 14 are located below the upper first walking wheels 23, and the lower sliding rails 14 are located above the lower first walking wheels 23.

[0046] A plurality of first positioning holes are further arranged on the sliding frame 21, a plurality of second positioning holes 15 are arranged on the support frame 11, the first positioning holes and the second positioning holes are detachably connected through the fasteners 7, and accurate positioning of the internal trolley 2 during construction is realized.

[0047] A plurality of stop pieces 16 are fixedly arranged on the support frame 11, the stop pieces 16 are located at the front and rear ends of the sliding rails 14, are used for limiting the sliding displacement of the internal trolley 2 along the length direction of the sliding rails 14, prevent accidental movement of the internal trolley 2 during construction due to external force, and ensure construction safety.

[0048] The length of the sliding frame 21 is designed to be less than the length of the support frame 11, and this size relationship enables the internal trolley 2 to have sufficient activity space during sliding and ensures the stability of the overall structure of the trolley.

[0049] The outer formwork 6 comprises two outer side formworks 61 arranged in the vertical direction, the outer side formworks 61 are connected with the external trolley 5 through second power telescopic rods 62, and the second power telescopic rods 62 adopt the structure of hydraulic push rods or electric push rods. The two outer side formworks 61 are arranged in one-to-one correspondence with the two inner side formworks 32 of the inner formwork 3 and are located at the two sides of the two inner side formworks 32 along the width direction thereof. The outer side formworks 61 are connected with the inner side formworks 32 through the pull rods 8, the pull rods 8 are used for enhancing the connection stability between the outer side formworks 61 and the inner side formworks 32 and ensuring the firmness of the formwork structure during pouring.

[0050] The lower end of the external trolley 5 is provided with two sets of second walking wheels 51 which are in sliding connection with the side rail 4, so that the external trolley 5 can move smoothly on the side rail 4. In addition, the second walking wheels 51 also have a braking function, which can quickly lock the position of the trolley during construction, prevent the trolley from sliding, and improve the safety and reliability of construction.

[0051] Through the above structural design, the box culvert construction assembly trolley can realize quick assembly and disassembly, improve the construction efficiency, and ensure the stability and safety during construction, and is suitable for various box culvert 9 construction scenes.

[0052] The working principle of the utility model is as follows:

[0053] In the first step, the center sliding frame 1 is installed on the center line of the box culvert 9, and the two telescopic supporting legs 12 are erected on the ground. By adjusting the length of the telescopic supporting legs 12, the supporting frame 11 can be kept in a horizontal state.

[0054] In the second step, the sliding frame 21, the first power telescopic rod 22, the inner top formwork 31, the inner bottom formwork 33 and the inner side formwork 32 are installed on the supporting frame 11. After the sliding frame 21 is slid into position, it is fixedly connected with the supporting frame 11 through the fastener 7. By extending and retracting the first power telescopic rod 22, the shape of the inner top formwork 31, the inner bottom formwork 33 and the inner side formwork 32 can be adjusted to match the shape of the inner wall of the box culvert 9. Then, the length of the telescopic supporting legs 12 is adjusted again so that the inner formwork 3 matches the height of the inner wall of the box culvert 9.

[0055] In the third step, two side rails 4 are laid on both sides of the center sliding frame 1, and the external trolley 5 is erected on the two side rails 4. The external trolley 5 is slid to the outside of the internal trolley 2, and the relative static effect between the external trolley 5 and the side rail 4 is realized through the braking function of the second walking wheels 51.

[0056] In the fourth step, the second power telescopic rod 62 and the two outer side formworks 61 are installed on the external trolley 5. By extending the second power telescopic rod 62, the two outer side formworks 61 can match the shape of the outer wall of the box culvert 9. The outer side formworks 61 and the inner side formwork 32 are fixed through the pull rod 8.

[0057] In the fifth step, the front and rear end formworks are installed at the front and rear ends of the inner top formwork 31, the inner bottom formwork 33, the inner side formwork 32 and the outer side formwork 61. When the box culvert 9 on one end has been poured and completed, the poured and completed box culvert 9 can be used as a closed end. Only the end formwork needs to be erected on the end far away from the box culvert 9. Then, the concrete is poured in the space enclosed by the inner top formwork 31, the inner bottom formwork 33, the inner side formwork 32, the outer side formwork 61 and the end formwork.

[0058] The sixth step is that concrete curing is formed, the end template is removed, the pull rod 8 is removed, the first power telescopic rod 22 is retracted, the inner top template 31, the inner bottom template 33 and the inner side template 32 are folded, the inner top template 31, the inner bottom template 33 and the inner side template 32 are separated from the inner wall of the box culvert 9, the second power telescopic rod 62 is retracted, and the outer side template 61 is separated from the outer wall of the box culvert 9.

[0059] The seventh step is that the fastener 7 between the support frame 11 and the sliding frame 21 is removed, the first power telescopic rod 22, the inner top template 31, the inner bottom template 33 and the inner side template 32 are moved by pulling the sliding frame 21, and the sliding frame 21 is moved to the next box culvert 9 construction position, the sliding frame 21 is fixedly connected with the support frame 11 through the fastener 7, the first power telescopic rod 22 is elongated, the shape of the inner top template 31, the inner bottom template 33 and the inner side template 32 is adjusted, and the shape of the inner top template 31, the inner bottom template 33 and the inner side template 32 is matched with the shape of the inner wall of the box culvert 9.

[0060] The eighth step is that the brake of the second walking wheel 51 is released, the outer trolley 5 is slid to the outer side of the inner trolley 2, and the relative static effect between the outer trolley 5 and the side rail 4 is realized through the brake function of the second walking wheel 51.

[0061] The ninth step is that the second power telescopic rod 62 is elongated, the two outer side templates 61 are matched with the shape of the outer wall of the box culvert 9, and the outer side template 61 is fixed between the inner side template 32 through the pull rod 8.

[0062] The fifth step to the ninth step is repeated, and the pouring process of multiple box culverts 9 is realized.

[0063] It should be explained that when the sliding frame 21 slides to one end of the support frame 11, after the concrete curing of the current box culvert 9 is completed, the fastener 7 between the support frame 11 and the sliding frame 21 is released, the telescopic support leg 12 is retracted, the support pad 13 is separated from the ground, the support frame 11 is pulled, the relative sliding between the support frame 11 and the sliding frame 21 is realized, the telescopic support leg 12 is elongated again, the erection of the support frame 11 is completed, and the position of the support frame 11 can be replaced through the above-mentioned mode.

[0064] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0065] The above-described embodiments are merely preferred modes of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A prefabricated trolley for box culvert construction, characterized in that, Comprising: A central sliding carriage (1); An internal trolley (2) fixedly and slidably connected along the length direction of the central sliding carriage (1), with a collapsible or expandable inner formwork (3) arranged on the peripheral side of the internal trolley (2), and the inner formwork (3) is in a cylindrical structure with openings at both front and rear ends; Two side rails (4) arranged parallel to the length direction of the central sliding carriage (1), which are respectively laid on both sides of the central sliding carriage (1); and An external trolley (5) with a "冂"-shaped cross-section and fixedly and slidably connected to the two side rails (4), and an outer formwork (6) is arranged inside the external trolley (5), and the outer formwork (6) is located on the peripheral side of the inner formwork (3), and the two cooperate to form a pouring space for the culvert (9).

2. The prefabricated trolley for box culvert construction according to claim 1, characterized in that, The central sliding carriage (1) includes: A support frame (11) fixedly and slidably connected to the internal trolley (2) along its length direction; and Two groups of telescopic support legs (12) arranged vertically, which are respectively fixedly connected to the front and rear ends of the support frame (11) in a one-to-one correspondence. The upper end of the telescopic support leg (12) is fixedly connected to the support frame (11), and the lower end of the telescopic support leg (12) is fixedly connected with a support pad (13).

3. The prefabricated trolley for box culvert construction according to claim 2, characterized in that, The inner formwork (3) includes: Two inner top formworks (31) arranged in sequence along the width direction of the support frame (11) and hinged to each other; Two inner bottom formworks (33) arranged in sequence along the width direction of the support frame (11) and hinged to each other; and Inner side formworks (32) are respectively hinged to the mutually remote sides of the two inner top formworks (31) and the mutually remote sides of the two inner bottom formworks (33).

4. The prefabricated trolley for box culvert construction according to claim 3, characterized in that, The internal trolley (2) includes: A sliding frame (21) sleeved on the peripheral side of the support frame (11) and fixedly and slidably connected to the support frame (11). The inner top formwork (31), inner bottom formwork (33) and inner side formwork (32) surround the peripheral side of the sliding frame (21) and are respectively connected to the central sliding carriage (1) through first power telescopic rods (22).

5. The prefabricated trolley for box culvert construction according to claim 4, characterized in that, The internal trolley (2) further includes: Multiple groups of first walking wheels (23) installed on the sliding frame (21), and multiple slide rails (14) are arranged along the length direction of the support frame (11), and the multiple slide rails (14) are slidably connected to the multiple groups of first walking wheels (23) in a one-to-one correspondence; and Multiple first positioning holes are arranged on the sliding frame (21), and multiple second positioning holes (15) are arranged along the length direction of the support frame (11), and the second positioning holes are detachably connected to the first positioning holes through fasteners (7).

6. The prefabricated trolley for box culvert construction according to claim 5, characterized in that, Multiple stoppers (16) are fixedly arranged on the support frame (11), and the stoppers (16) are located at the front and rear ends of the slide rails (14), and the stoppers (16) are used to limit the sliding displacement of the internal trolley (2) along the length direction of the slide rails (14).

7. The prefabricated trolley for box culvert construction according to claim 6, characterized in that, The length of the sliding frame (21) is less than the length of the support frame (11).

8. The prefabricated trolley for box culvert construction according to claim 5, characterized in that, The outer template (6) includes two outer templates (61) arranged in the vertical direction, which are connected to the outer trolley (5) through the second power telescopic rod (62). The two outer templates (61) are arranged one-to-one with the two inner templates (32), and are arranged on both sides of the two inner templates (32) along their width direction.

9. The prefabricated trolley for box culvert construction according to claim 8, characterized in that, The outer template (61) is connected to the inner template (32) by a tie rod (8).

10. The prefabricated trolley for box culvert construction according to claim 8, characterized in that, The lower end of the external trolley (5) is equipped with two sets of second traveling wheels (51), which are slidably connected to the two side rails (4), and the second traveling wheels (51) have a braking function.

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