Temporary supporting device for highway culvert construction

Abstract

The utility model discloses a highway culvert construction temporary supporting device which comprises a supporting barrel, the bottom of the supporting barrel is connected with a base shell, a lead screw is rotationally connected in the supporting barrel, the outer wall of the lead screw is in threaded connection with a nut seat, the outer wall of the nut seat is connected with L-shaped rods in a bilateral symmetry mode, the upper ends of the two L-shaped rods are jointly connected with a cylindrical shell, and the cylindrical shell is connected with a supporting rod. The center of the cylindrical shell is rotationally connected with a steering shaft, the end of the steering shaft is connected with side supporting arms, the ends of the two side supporting arms are jointly connected with a protection plate, the lower portion of the outer wall of a lead screw is connected with a worm gear, the lower portion of a supporting barrel is rotationally connected with a worm, the outer wall of the worm is connected with the worm gear in a meshed mode, and the front end of the worm is connected with a hand wheel. The supporting device is reasonable in structural design, improves the stability during use, guarantees the supporting effect, and is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, in particular to a temporary supporting device for highway culvert construction. Background Art

[0002] Culverts are an indispensable building structure in highway construction. Culverts are small structures set up to ensure that surface water can cross the highway. During the construction of culverts, many temporary support devices are needed to temporarily improve the stability of the culvert building structure. Traditional temporary support devices used in highway culvert construction are mostly hydraulic cylinder lifting and pushing structures. When used, the entire support device needs to be fixed, and there are many support operations, which leads to reduced support efficiency.

[0003] To this end, technicians in the relevant technical field have made improvements. For example, Chinese patent application number CN202221913215.9 proposed a "temporary support device for highway culvert construction". In this application document, the first rack and the second rack are simultaneously meshed with the gear for transmission, and the support top plate is raised to a height that contacts the culvert building structure while the positioning rivets are inserted into the ground. However, the technical solution in this application document still has shortcomings. The device relies on a hydraulic cylinder to adjust the overall height, and is prone to rupture and leakage when overloaded, with high maintenance costs. The angle of the guard plate cannot be adjusted during use, and it cannot better fit the top wall of the culvert. For this reason, we propose a temporary support device for highway culvert construction. Utility Model Content

[0004] The utility model aims to provide a temporary supporting device for highway culvert construction, so as to overcome the technical problems existing in the prior art.

[0005] In order to achieve the above technical objectives and the above technical effects, the utility model provides the following technical solutions:

[0006] A temporary support device for highway culvert construction comprises a support tube, wherein the bottom of the support tube is connected to a base shell, a screw is rotatably connected inside the support tube, a nut seat is screwed on the outer wall of the screw, an L-shaped rod is symmetrically connected to the outer wall of the nut seat, the upper ends of two L-shaped rods are commonly connected to a cylindrical shell, a steering shaft is rotatably connected to the center of the cylindrical shell, a side support arm is connected to the end of the steering shaft, a guard plate is commonly connected to the ends of two side support arms, a worm wheel is connected to the lower part of the outer wall of the screw, a worm is rotatably connected to the lower part of the support tube, the outer wall of the worm is meshingly connected to the worm wheel, and a hand wheel is connected to the front end of the worm.

[0007] Preferably, in a temporary support device for highway culvert construction, a circular through hole is provided on the side support arm, a positioning pin is inserted into the circular through hole, a pull ring is connected to the end of the positioning pin away from the cylindrical shell, a tension spring is connected between the pull ring and the side support arm, and a plurality of positioning holes cooperating with the positioning pin are provided on the outer side wall of the cylindrical shell, and the plurality of positioning holes are distributed circumferentially around the steering shaft.

[0008] Preferably, in a temporary support device for highway culvert construction, the outer wall of the base shell is hinged with four base plates, a screw is rotatably connected inside the base shell, a lifting seat is screwed on the outer wall of the screw, a traction rod is hinged between the outer wall of the lifting seat and the base plate, a limiting groove for the traction rod to pass through is opened on the outer wall of the base shell, and a plurality of insertion rods are circumferentially connected to the bottom of the lifting seat.

[0009] Preferably, in a temporary support device for highway culvert construction, the upper portion of the outer wall of the screw is connected to a bevel gear ring, the upper portion of the outer wall of the base shell is rotatably connected to a rocker, one end of the rocker extending into the base shell is connected to a bevel gear, and the bevel gear is meshedly connected to the bevel gear ring.

[0010] Preferably, in a temporary support device for highway culvert construction, a first through hole for an L-shaped rod to pass through is provided at the top of the support tube, and a second through hole for an insertion rod to pass through is provided at the bottom of the base shell.

[0011] Preferably, in a temporary support device for highway culvert construction, the unfolded helix angle of the worm is smaller than the friction angle of the worm gear contact.

[0012] The beneficial effects of the utility model are:

[0013] The utility model has a reasonable structural design. The bevel gear is engaged to drive the bevel gear ring. After the screw is rotated, the lifting seat can be raised and lowered in height. When the rod is inserted into the working ground, the base plate is unfolded and fits the working ground. It can effectively avoid the device from tilting and improve the stability during use. The worm is engaged to drive the worm wheel. After the screw is rotated, the nut seat drives the L-shaped rod to rise, so the height of the cylindrical shell can be adjusted. The locating pin is inserted into the corresponding locating hole, and the deflection angle of the guard plate can be adjusted to better fit the culvert profile and ensure the support effect. The device does not need to be equipped with a hydraulic cylinder. The self-locking effect of the worm gear can be used to avoid the guard plate from falling due to its own weight. It is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the support tube in the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the base shell of the utility model;

[0018] Figure 4 for Figure 2 A local enlarged schematic diagram of the middle A;

[0019] Figure 5 It is a top view of the worm gear in the utility model.

[0020] In the figure: 1. support tube; 2. base shell; 3. screw rod; 4. nut seat; 5. L-shaped rod; 6. cylindrical shell; 7. steering shaft; 8. side support arm; 9. guard plate; 10. worm gear; 11. worm; 12. hand wheel; 13. first through hole; 14. second through hole; 21. base plate; 22. screw rod; 23. lifting seat; 24. traction rod; 25. limiting groove; 26. insertion rod; 27. bevel gear ring; 28. rocker; 29. ​​bevel gear; 61. positioning hole; 81. round through hole; 82. positioning pin; 83. pull ring; 84. tension spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 As shown, this embodiment is a temporary support device for highway culvert construction, including a support tube 1, a base shell 2 is connected to the bottom of the support tube 1, a screw rod 3 is rotatably connected inside the support tube 1, a nut seat 4 is screwed on the outer wall of the screw rod 3, an L-shaped rod 5 is symmetrically connected to the outer wall of the nut seat 4, the upper ends of the two L-shaped rods 5 are commonly connected to a cylindrical shell 6, the center of the cylindrical shell 6 is rotatably connected to a steering shaft 7, the end of the steering shaft 7 is connected to a side support arm 8, the ends of the two side support arms 8 are commonly connected to a guard plate 9, the lower part of the outer wall of the screw rod 3 is connected to a worm wheel 10, the lower part of the support tube 1 is rotatably connected to a worm 11, the outer wall of the worm 11 is meshed with the worm wheel 10, and the front end of the worm 11 is connected to a hand wheel 12.

[0023] A circular through hole 81 is provided on the side support arm 8, a positioning pin 82 is inserted into the circular through hole 81, a pull ring 83 is connected to the end of the positioning pin 82 away from the cylindrical shell 6, a tension spring 84 is connected between the pull ring 83 and the side support arm 8, and a plurality of positioning holes 61 cooperating with the positioning pin 82 are provided on the outer wall of the cylindrical shell 6, and the plurality of positioning holes 61 are distributed circumferentially around the steering shaft 7.

[0024] Four base plates 21 are hingedly connected to the outer wall of the base shell 2, a screw rod 22 is rotatably connected inside the base shell 2, a lifting seat 23 is screwed to the outer wall of the screw rod 22, a traction rod 24 is hingedly connected between the outer wall of the lifting seat 23 and the base plate 21, a limiting groove 25 is opened on the outer wall of the base shell 2 for the traction rod 24 to pass through, and a plurality of insertion rods 26 are circumferentially connected to the bottom of the lifting seat 23.

[0025] The upper part of the outer wall of the screw 22 is connected with a bevel gear ring 27, and the upper part of the outer wall of the base shell 2 is rotatably connected with a rocker 28. One end of the rocker 28 extending into the base shell 2 is connected with a bevel gear 29, and the bevel gear 29 is meshed with the bevel gear ring 27 to facilitate the control of the rotation of the screw 22.

[0026] A first through hole 13 for the L-shaped rod 5 to pass through is formed at the top of the support tube 1, and a second through hole 14 for the insertion rod 26 to pass through is formed at the bottom of the base shell 2, so as to facilitate the movement of the rod.

[0027] The developed helix angle of the worm 11 is smaller than the friction angle of the worm wheel 10 and the worm 11 , so that a self-locking effect can be achieved.

[0028] The specific implementation of the utility model is:

[0029] When the device is in use, the base shell 2 is placed in the working area, and the bevel gear 29 is driven to rotate by the rocker 28, and the bevel gear 29 engages with the transmission bevel gear ring 27. After the screw rod 22 rotates, the lifting seat 23 drives the insertion rod 26 to descend, and the lower end of the insertion rod 26 can be inserted into the working ground. When the lifting seat 23 descends, it drives the traction rod 24 to deflect, and the base plate 21 deflects downward and fits the working ground, which has higher stability. The worm 11 is driven to rotate by the hand wheel 12, and the worm 11 engages with the transmission worm wheel 10. After the screw rod 3 rotates, the nut seat 4 drives the L-shaped rod 5 to rise, which can adjust the height of the cylindrical shell 6, and adjust the deflection angle of the guard plate 9 according to the culvert profile. The elastic force of the tension spring 84 is used to drive the pull ring 83 to reset, and the positioning pin 82 can be inserted into the corresponding positioning hole 61, so that the guard plate 9 can better fit the culvert profile and ensure the support effect.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A temporary support device for highway culvert construction, comprising a support tube (1), characterized in that: The bottom of the support tube (1) is connected to a base shell (2), a screw rod (3) is rotatably connected inside the support tube (1), a nut seat (4) is screwed onto the outer wall of the screw rod (3), an L-shaped rod (5) is symmetrically connected to the outer wall of the nut seat (4), the upper ends of the two L-shaped rods (5) are commonly connected to a cylindrical shell (6), the center of the cylindrical shell (6) is rotatably connected to a steering shaft (7), the end of the steering shaft (7) is connected to a side support arm (8), the ends of the two side support arms (8) are commonly connected to a guard plate (9), the lower part of the outer wall of the screw rod (3) is connected to a worm wheel (10), the lower part of the support tube (1) is rotatably connected to a worm (11), the outer wall of the worm (11) is meshedly connected to the worm wheel (10), and the front end of the worm (11) is connected to a hand wheel (12).

2. A temporary support device for highway culvert construction according to claim 1, characterized in that: The side support arm (8) is provided with a round through hole (81), a positioning pin (82) is inserted into the round through hole (81), a pull ring (83) is connected to the end of the positioning pin (82) away from the cylindrical shell (6), a tension spring (84) is connected between the pull ring (83) and the side support arm (8), and a plurality of positioning holes (61) matching with the positioning pin (82) are provided on the outer wall of the cylindrical shell (6), and the plurality of positioning holes (61) are distributed circumferentially around the steering shaft (7).

3. A temporary support device for highway culvert construction according to claim 1, characterized in that: The outer wall of the base shell (2) is hinged with four base plates (21); a screw rod (22) is rotatably connected inside the base shell (2); a lifting seat (23) is screwed to the outer wall of the screw rod (22); a traction rod (24) is hinged between the outer wall of the lifting seat (23) and the base plate (21); a limiting groove (25) for the traction rod (24) to pass through is formed on the outer wall of the base shell (2); and a plurality of insertion rods (26) are circumferentially connected to the bottom of the lifting seat (23).

4. A temporary support device for highway culvert construction according to claim 3, characterized in that: The upper portion of the outer wall of the screw rod (22) is connected to a bevel gear ring (27), the upper portion of the outer wall of the base shell (2) is rotatably connected to a rocker (28), one end of the rocker (28) extending into the base shell (2) is connected to a bevel gear (29), and the bevel gear (29) is meshedly connected to the bevel gear ring (27).

5. A temporary support device for highway culvert construction according to claim 3, characterized in that: The top of the support tube (1) is provided with a first through hole (13) through which the L-shaped rod (5) passes, and the bottom of the base shell (2) is provided with a second through hole (14) through which the insertion rod (26) passes.

6. A temporary support device for highway culvert construction according to claim 1, characterized in that: The developed helix angle of the worm (11) is smaller than the friction angle of contact between the worm wheel (10) and the worm (11).

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