Automatic trepanning device for back face of bridge guardrail

Abstract

The utility model discloses a device for automatic trepanning on the back of a bridge guardrail, which comprises a moving device, a propelling device, a stretching device and a drilling device, the moving device is hung on the bridge guardrail and is provided with a bottom frame with a chute, the propelling device is integrally arranged in the bottom frame, pulleys are arranged on two sides of the propelling device and are arranged in the chute, and the stretching device is connected with the drilling device. The drilling device is installed on the propelling device, the stretching device comprises a long supporting arm, a short supporting arm and a push-pull rod, the lower end of the long supporting arm is hinged to the bottom frame, the upper end of the long supporting arm is hinged to the push-pull rod, the lower end of the short supporting arm is hinged to the propelling device, and the upper end of the short supporting arm is hinged to the middle of the long supporting arm. And then the drilling device is driven to drill or retreat. The device is simple in structure and convenient to use, operation can be completed inside a bridge by a single person, construction risks are effectively reduced, and personnel and mechanical cost input is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a device for automatically opening holes on the back of bridge railings. Background Technology

[0002] In existing construction techniques, opening holes on the back of bridge railings requires the use of specialized bridge hoists or construction trolleys in conjunction with manual operation, which has the following disadvantages: 1. It poses significant safety hazards; 2. It requires two workers to work together; 3. The mechanical costs of hoists and trolleys are relatively high.

[0003] Therefore, how to create a new device for automatically opening holes on the back of bridge railings is one of the important research and development topics at present. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device for automatically opening holes on the back of bridge railings, so that construction can be completed by a single person inside the bridge, reducing construction risks, mechanical costs and labor costs, thereby overcoming the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a device for automatically drilling holes on the back of bridge railings, including a moving device, a pushing device, a stretching device and a drilling device.

[0006] The mobile device includes a base frame and a hanging frame. The base frame is a cuboid frame structure with a sliding groove along the horizontal edge. The hanging frame is an inverted U-shaped frame structure and is welded and fixed to the base frame for hanging on the bridge railing.

[0007] The propulsion device is a cuboid frame structure with pulleys installed on both sides. The entire propulsion device is placed inside the base frame, and the pulleys are located in the slide groove.

[0008] The drilling device is mounted on the propulsion device;

[0009] The tensioning device includes a long support arm, a short support arm, and a push-pull rod located in the same vertical plane. The lower end of the long support arm is hinged to the base frame, and the upper end is hinged to the push-pull rod. The lower end of the short support arm is hinged to the propulsion device, and the upper end is hinged to the middle of the long support arm. Pushing / pulling the push-pull rod is used to drive the propulsion device to move horizontally through the long support arm and the short support arm, thereby driving the drilling device to drill or retract.

[0010] As an improvement of this utility model, both the moving device and the propulsion device are made of angle steel welded together.

[0011] Furthermore, diagonal braces are welded between the hanger and the base frame to increase structural strength.

[0012] Furthermore, the inner and outer vertical sections of the bracket are of different lengths, with the outer vertical section being longer than the inner vertical section.

[0013] Furthermore, the bracket is equipped with casters on all three sides facing the bridge railing.

[0014] Furthermore, the bracket has corner plates welded at the junction of the vertical and horizontal sections to increase structural strength.

[0015] Furthermore, both the moving device and the propulsion device are welded with ear plates for hinged connection with the long or short support arm.

[0016] Furthermore, the drilling device is a hand drill, which is fixed to the propulsion device by clamps or cable ties.

[0017] With this design, the present invention has at least the following advantages:

[0018] 1. Construction workers are located inside the bridge during construction to reduce construction risks and avoid safety accidents;

[0019] 2. Construction can be completed by a single worker, making the operation simple and reducing manpower input;

[0020] 3. No need to use suspended platforms or construction trolleys, reducing mechanical cost investment;

[0021] 4. It has a simple structure, is easy to use, and is suitable for widespread application. Attached Figure Description

[0022] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a structural schematic diagram of the present invention in its initial state.

[0024] Figure 2 This is a schematic diagram of the structure of this utility model in the drilling state.

[0025] Figure 3 This is a schematic diagram of the propulsion device in this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the mobile device in this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Moving device; 11. Base frame; 111. Slide groove; 12. Hanger; 121. Diagonal brace; 122. Angle plate; 123. Moving wheel; 2. Propulsion device; 21. Pulley; 22. Ear plate; 3. Drilling device; 4. Tensioning device; 41. Long support arm; 42. Short support arm; 43. Push-pull rod. Detailed Implementation

[0028] Please see Figures 1 to 4 This utility model provides a device for automatically drilling holes on the back of bridge railings, including a moving device 1, a pushing device 2, a drilling device 3, and a stretching device 4.

[0029] The mobile device 1 includes a base frame 11 and a hanging bracket 12.

[0030] The base frame 11 is a cuboid frame structure welded from angle steel, and a sliding groove 111 is provided along its horizontal edge. In this embodiment, the sliding groove 111 is formed by welding another angle steel on the side frames of the upper and lower layers of the base frame 11, thereby forming a U-shaped groove with a side opening.

[0031] The hanger 12 has an inverted U-shaped frame structure with unequal inner and outer vertical sections, the outer vertical section being longer than the inner vertical section. The outer vertical section of the hanger 12 is welded and fixed to the base frame, and a diagonal brace 121 is welded between the outer vertical section and the base frame 11. Angle plates 122 are welded between the vertical and horizontal sections of the hanger 12. The diagonal brace 121 and the angle plate 122 both serve to increase the structural strength.

[0032] In this embodiment, the bracket 12 is equipped with three movable wheels 123 on the three sides facing the bridge railing. When a row of holes is drilled on the back of the bridge railing, it is convenient for the moving device 1 to move along the length of the bridge railing.

[0033] The propulsion device 2 is a cuboid frame structure welded from angle steel. The outer dimensions of the propulsion device 2 are smaller than the inner dimensions of the base frame 11, allowing the propulsion device 2 to be placed entirely inside the base frame 11. Pulleys 21 are installed on both sides of the propulsion device 2. During installation, the pulleys 21 are placed in the sliding grooves 111, allowing the propulsion device 2 to slide along the direction of the sliding grooves 111.

[0034] The drilling device 3 is installed on the propulsion device 2. In this embodiment, the drilling device 3 is a hand drill, which is fixed to the propulsion device 2 by clamps or cable ties.

[0035] The tensioning device 4 includes a long support arm 41, a short support arm 42, and a push-pull rod 43, all of which are located in the same vertical plane.

[0036] Ear plates 22 are welded and fixed on both the base frame 11 and the propulsion device 2. The lower end of the long support arm 41 is hinged to the ear plate 22 on the base frame 11, and the lower end of the short support arm 42 is hinged to the ear plate 22 on the propulsion device 2. At the same time, the upper end of the short support arm 42 is hinged to the middle of the long support arm 41, thereby forming a linkage slider mechanism between the long support arm 41, the short support arm 42, the base frame 11, and the propulsion device 2.

[0037] The push-pull rod 43 is hinged to the upper end of the long support arm 41. Construction workers can push and pull the push-pull rod 43 by hand. The long support arm 41 and the short support arm 42 can drive the propulsion device to move horizontally, thereby driving the drilling device 3 to drill or retract.

[0038] In use, the mobile device 1 is hung on the bridge railing, while the base frame 11 and the propulsion device 2 are located on the back of the bridge railing. After the mobile device 1 is moved to the drilling position, the drilling device 3 is started and the push-pull rod 43 is pulled to drill. After the drilling is completed, the push-pull rod 42 is pushed to retract the propulsion device 2 and the drilling device 3 to reset. Then the mobile device 1 is moved to the next hole position and the above operation is repeated.

[0039] This utility model has a simple structure and is easy to use. It can be operated by a single person inside the bridge, effectively reducing construction risks and also reducing personnel and machinery costs.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes or alterations made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present utility model.

Claims

1. A device for automatic backside opening of bridge guardrails, characterized in that, The mobile device, the propelling device, the stretching device and the drilling device are included; The mobile device includes a chassis and a hanger, the chassis is a cuboid frame structure, and a sliding groove is arranged along a horizontal edge line, the hanger is an inverted U-shaped frame structure, and is welded and fixed with the chassis, and is used for being hung on a bridge guardrail; The propelling device is a cuboid frame structure, and pulleys are installed on both sides, the propelling device is arranged in the chassis, and the pulleys are arranged in the sliding groove; The drilling device is installed on the propelling device; The stretching device includes a long branch, a short branch and a push-pull rod in the same vertical plane, the long branch is hinged at a lower end with the chassis, and is hinged at an upper end with the push-pull rod, the short branch is hinged at a lower end with the propelling device, and is hinged at an upper end with a middle part of the long branch, the push-pull rod is used for driving the propelling device to move horizontally through the long branch and the short branch, and then drives the drilling device to drill or retreat.

2. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, The mobile device and the propelling device are welded by angle steels.

3. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, An inclined support is welded between the hanger and the chassis, and is used for increasing structural strength.

4. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, The lengths of inner and outer vertical sections of the hanger are different, and the length of the outer vertical section is greater than that of the inner vertical section.

5. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, Three side surfaces of the hanger facing the bridge guardrail are all installed with mobile wheels.

6. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, An angle plate is welded at a joint of the vertical section and the horizontal section of the hanger, and is used for increasing structural strength.

7. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, Ear plates are welded on the mobile device and the propelling device, and are used for being hinged with the long branch or the short branch.

8. The device for automatic backside punching of bridge guardrails according to claim 1, characterized in that, The drilling device is a hand drill, and is fixed with the propelling device through a clamp or a strap.

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