Cutting device for bridge deck guardrail false seam

By designing cutting devices for false seams for bridge deck guardrails, including positioning frames and guide tracks, as well as handheld cutting machines and guide components, the problems of poor cutting quality and low efficiency in the prior art are solved, and higher quality and higher efficiency false seams are achieved.

CN222893474UActive Publication Date: 2025-05-23CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
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Patent Information

Application Number
CN202421788289.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-26
Publication Date
2025-05-23
Estimated Expiration
2034-07-26

AI Technical Summary

Technical Problem

In the prior art, using a simple cutting machine to cut false joints of the bridge deck guardrails makes it difficult to control the verticality, width and depth, and often cause missing edges and angles, resulting in poor construction quality and low efficiency.

Method used

A cutting device including a fake seam positioning tooling and a cutting mechanism is designed. The fake seam positioning tooling includes a positioning frame and a guide rail. The trajectory of the guide rail is consistent with the trajectory of the cross-section of the bridge deck guardrail to ensure that the guide rail is close to the bridge deck guardrail. The cutting mechanism includes a hand-held cutting machine, and one side of the hand-held cutting machine is provided with a guide assembly, which is guided along the outside of the guide rail to ensure that the cutting machine is stably cut along the guide rail.

Benefits of technology

Through this cutting device, the cutting quality of the false seams is improved, construction cost is saved, the cutting time of each false seams is shortened, and construction efficiency is significantly improved.

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Abstract

The utility model provides a cutting device for a false joint of a bridge deck guardrail. The cutting device comprises a false joint positioning tool and a cutting mechanism. The false seam positioning tool comprises a positioning frame, a guide rail is arranged on the positioning frame, the track of the guide rail is consistent with the track of the cross section of the bridge deck guardrail, and when the positioning frame is fixed to the bridge deck guardrail, the inner side of the guide rail is tightly attached to the bridge deck guardrail; the cutting mechanism comprises a handheld cutting machine, at least two guiding assemblies are arranged on one side of the handheld cutting machine, and the guiding assemblies move in a guiding mode along the outer sides of the guiding rails. According to the cutting device, the cutting quality of the false joint is improved, and the construction cost is saved; and moreover, the cutting time of each false joint is greatly shortened, and the construction efficiency is improved. The positioning frame moves along the bridge deck guardrail through the moving wheels, so that the positioning frame can move across the bridge deck guardrail without being taken down from the bridge deck guardrail, and the positioning frame can move along the bridge deck guardrail more conveniently.
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Description

Technical Field

[0001] The invention belongs to the technical field of bridge deck construction, and in particular relates to a cutting device for false seams of bridge deck guardrails. Background Art

[0002] Highway bridge guardrails often use reinforced concrete wall guardrails. According to the drawing requirements, the guardrail is SS grade, with a bottom width of 530mm and a height of 1100mm above the bridge deck. A false seam is set every 4m on the concrete guardrail. The four false seams on the left and right sides should be in the same section. There is one false seam every 4m, with a cut width of 3mm and a cut depth of 30mm to ensure that the shrinkage stress of the concrete is dispersed by cracking; an arc design is used.

[0003] However, at present, using a simple cutting machine to cut the false seams will make it difficult to control the verticality, width and depth of the false seams. It is often the case that the false seams are chipped and cornered due to uneven force applied by workers during operation, resulting in poor construction quality and low construction efficiency.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a cutting device for false seams of bridge deck guardrails, so as to at least solve the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A cutting device for false seams of bridge deck guardrails, the cutting device comprising false seam positioning tooling and a cutting mechanism;

[0008] The false seam positioning tool comprises a positioning frame, on which a guide track is arranged, the track of the guide track is consistent with the track of the cross section of the bridge deck guardrail, and when the positioning frame is fixed on the bridge deck guardrail, the inner side of the guide track is closely attached to the bridge deck guardrail;

[0009] The cutting mechanism comprises a handheld cutting machine, and at least two guide assemblies are arranged on one side of the handheld cutting machine, and the guide assemblies are guided and moved along the outer side of the guide track.

[0010] As described above, in the cutting device for false seams of bridge deck guardrails, preferably, the guide assembly includes a mounting seat and a bearing, the mounting seat is arranged on the side of the handheld cutting machine facing the guide track, the bearing sleeve is arranged on the mounting seat, and the outer ring of the bearing is used to be close to the outer side of the guide track.

[0011] As described above, in the cutting device for false seams of bridge deck guardrails, preferably, the connecting line of the two guide assemblies passes through the center of the saw disk in the handheld cutting machine.

[0012] As described above, the cutting device for false seams of bridge deck guardrails, preferably, the left and right sides of the positioning frame have a plurality of bolt holes, each bolt hole is threadedly equipped with a positioning rod, and each positioning rod is threadedly equipped with a nut;

[0013] When the false seam positioning tooling is moved into place and the inner side of the guide track is close to the bridge deck guardrail, rotate the positioning rod in the bolt hole so that one end of the positioning rod is pressed against the bridge deck guardrail, and then tighten the nut to fix the positioning rod.

[0014] As described above, for the cutting device for false seams of bridge guardrails, preferably, the positioning frame is also provided with a moving unit for moving the positioning frame to the position of the next false seam of the bridge guardrail through the moving unit after the false seam cutting is completed.

[0015] As described above, in the cutting device for false seams of bridge guardrails, preferably, the moving unit comprises a pair of channel steels, a wheel frame is provided between the pair of channel steels for guidance, a moving wheel is rotatably provided on the wheel frame, and a telescopic rod is provided between the wheel frame and the positioning frame.

[0016] As described above, in the cutting device for false seams of bridge guardrails, preferably, at least two moving units are provided on the top of the positioning frame facing the side of the bridge guardrail.

[0017] As described above, in the cutting device for false seams of bridge deck guardrails, preferably, at least one moving unit is provided on the side of the positioning frame located outside the bridge deck guardrail facing inward.

[0018] Beneficial effects:

[0019] The cutting device is used for bridge guardrail construction. When it is necessary to cut a false seam on the bridge guardrail, the positioning frame is fixed on the bridge guardrail so that the inner side of the guide track is close to the bridge guardrail and the guide track is located at the position where the false seam needs to be cut. Then the construction personnel pick up the handheld cutting machine and place the guide assembly on the handheld cutting machine close to the outer side of the guide track so that the handheld cutting machine can cut the false seam on the bridge guardrail along the guide track. This not only improves the cutting quality of the false seam and saves construction costs, but also greatly shortens the cutting time of each false seam and improves construction efficiency.

[0020] When the positioning frame needs to be moved, the telescopic rod is extended to push the moving wheel out of the channel steel, so that the moving wheel contacts the bridge deck guardrail and moves along the bridge deck guardrail. There is no need to remove the positioning frame from the bridge deck guardrail at all, and the positioning frame can be moved across the bridge deck guardrail, which makes it easier for the positioning frame to move along the bridge deck guardrail.

[0021] After the positioning frame moves into place, the telescopic rod contracts, causing the positioning frame seat to rest on the bridge railing, facilitating the guide track in the positioning frame to closely adhere to the position of the cutting false joint on the bridge railing. Then, the positioning rod is fixed to mutually fix the positioning frame and the bridge railing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0023] Figure 1 is a front view of the cutting device according to an embodiment of the present invention;

[0024] Figure 2 is a side view of the cutting device according to an embodiment of the present invention;

[0025] Figure 3 is a partial enlarged view of the moving unit according to an embodiment of the present invention.

[0026] In the figures: 1, positioning frame; 2, guide track; 3, hand-held cutting machine; 4, mounting seat; 5, bearing; 6, positioning rod; 7, moving unit; 71, telescopic rod; 72, channel steel; 73, wheel frame; 74, moving wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0028] In the description of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. The terms "connected" and "coupled" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0030] According to a specific embodiment of the present invention, Figure 1-3 As shown, the present invention provides a cutting device for false seams of bridge deck guardrails, and the cutting device includes a false seam positioning tool and a cutting mechanism.

[0031] The false seam positioning tooling comprises a positioning frame 1, on which a guide track 2 is arranged, the track of the guide track 2 is consistent with the track of the cross section of the bridge guardrail, and when the positioning frame 1 is fixed on the bridge guardrail, the inner side of the guide track 2 is tightly attached to the bridge guardrail.

[0032] The cutting mechanism comprises a handheld cutting machine 3 , at least two guide assemblies are arranged on one side of the handheld cutting machine 3 , and the guide assemblies move along the outer side of the guide track 2 .

[0033] In the cutting device, when it is necessary to cut a false seam on the bridge guardrail, the positioning frame 1 is fixed on the bridge guardrail so that the inner side of the guide track 2 is close to the bridge guardrail, and the guide track 2 is located at the position where the false seam needs to be cut; then the construction personnel pick up the handheld cutting machine 3, and place the guide assembly on the handheld cutting machine 3 close to the outer side of the guide track 2, so that the handheld cutting machine 3 can cut the false seam on the bridge guardrail along the guide track 2; not only the cutting quality of the false seam is improved and the construction cost is saved; but also the cutting time of each false seam is greatly shortened, thereby improving the construction efficiency.

[0034] The guide assembly includes a mounting seat 4 and a bearing 5 . The mounting seat 4 is arranged on the side of the handheld cutting machine 3 facing the guide track 2 . The bearing 5 is sleeved on the mounting seat 4 . The outer ring of the bearing 5 is used to be close to the outer side of the guide track 2 .

[0035] In one embodiment of the present application, the bearing 5 rotates freely on the mounting seat 4, and after the handheld cutting machine 3 is close to the guide rail 2, the bearing 5 can roll along the guide rail 2, making it easier for the handheld cutting machine 3 to move along the guide rail 2.

[0036] The line connecting the two guide components passes through the center of the saw disk in the handheld cutting machine 3. In one embodiment of the present application, the two guide components are arranged on both sides of the saw disk of the handheld cutting machine 3, and the line connecting the guide components passes through the center of the saw disk, so that the two guide components can support the saw disk more evenly on both sides of the saw disk, ensuring that the handheld cutting machine 3 can perform cutting operations more stably when moving along the guide track 2.

[0037] There are a plurality of bolt holes on the left and right sides of the positioning frame 1 , a positioning rod 6 is threadedly mounted in each bolt hole, and each positioning rod 6 is threadedly mounted with a nut.

[0038] When the false seam positioning fixture is moved into place and the inner side of the guide track 2 is close to the bridge deck guardrail, the positioning rod 6 in the bolt hole is rotated so that one end of the positioning rod 6 is pressed against the bridge deck guardrail, and then the nut is tightened to fix the positioning rod 6.

[0039] In one embodiment of the present application, at least two positioning rods 6 are provided on one side of the guide track 2 of the positioning frame 1, and at least one positioning rod 6 is provided on the other side of the positioning frame 1. The positioning frame 1 is firmly fixed on the bridge deck guardrail through the positioning rods 6 on both sides of the positioning frame 1.

[0040] The positioning frame 1 is also provided with a moving unit 7, which is used to move the positioning frame 1 to a false seam position under the bridge deck guardrail after the false seam cutting is completed through the moving unit 7. By providing the moving unit 7, it is more convenient to transfer the positioning frame 1.

[0041] The moving unit 7 includes a pair of channel steels 72 , a wheel frame 73 is provided between the pair of channel steels 72 , a moving wheel 74 is rotatably provided on the wheel frame 73 , and a telescopic rod 71 is provided between the wheel frame 73 and the positioning frame 1 .

[0042] In one embodiment of the present application, when the positioning frame 1 needs to be moved, the telescopic rod 71 is extended to push the moving wheel 74 out of the channel steel 72, so that the moving wheel 74 contacts the bridge deck guardrail. At this time, the positioning frame 1 is lifted up without contacting the bridge deck guardrail, and then the positioning frame 1 is pushed to move the moving wheel 74 along the bridge deck guardrail. In this way, there is no need to remove the positioning frame 1 from the bridge deck guardrail, and the positioning frame 1 can be moved across the bridge deck guardrail, which makes it easier for the positioning frame 1 to move along the bridge deck guardrail.

[0043] After the positioning frame 1 is moved into position, the telescopic rod 71 contracts, thereby driving the wheel frame 73 and the moving wheel 74 to retract into a pair of channel steels 72, so that the positioning frame 1 is placed on the bridge guardrail, so that the guide track 2 in the positioning frame 1 is close to the position of the bridge guardrail where the false seam is to be cut, and then the positioning rod 6 is fixed to fix the positioning frame 1 and the bridge guardrail to each other.

[0044] In this embodiment, the telescopic rod 71 can be a telescopic rod structure such as a hydraulic rod, which is convenient for driving the wheel frame 73 and the moving wheel 74 to guide and move in a pair of channel steels 72. A baffle is provided at the bottom of the channel steel 72 to prevent the wheel frame 73 from escaping from the guiding range of the channel steel 72.

[0045] At least two moving units 7 are arranged on the top of the positioning frame 1 facing the bridge guardrail. In one embodiment of the present application, two moving units 7 are arranged on the top of the positioning frame 1, which can ensure that the positioning frame 1 can be displaced more stably and reliably along the bridge guardrail.

[0046] At least one moving unit 7 is arranged on the side of the positioning frame 1 facing inwards from the outside of the bridge deck guardrail. In one embodiment of the present application, at least one moving unit 7 is arranged on the side of the positioning frame 1 to play an auxiliary guiding role, which can prevent the positioning frame 1 from shaking and swinging when moving, thereby preventing the positioning frame 1 from hitting the bridge deck guardrail when moving.

[0047] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A cutting device for false seams of bridge deck guardrails, characterized in that: The cutting device comprises a false seam positioning tool and a cutting mechanism; The false seam positioning tool comprises a positioning frame, on which a guide track is arranged, the track of the guide track is consistent with the track of the cross section of the bridge deck guardrail, and when the positioning frame is fixed on the bridge deck guardrail, the inner side of the guide track is closely attached to the bridge deck guardrail; The cutting mechanism comprises a handheld cutting machine, and at least two guide assemblies are arranged on one side of the handheld cutting machine, and the guide assemblies are guided and moved along the outer side of the guide track.

2. The cutting device for false seams of bridge deck guardrails according to claim 1 is characterized in that: The guide assembly comprises a mounting seat and a bearing. The mounting seat is arranged on a side of the handheld cutting machine facing the guide track. The bearing is sleeved on the mounting seat. The outer ring of the bearing is used to be close to the outer side of the guide track.

3. The cutting device for false seams of bridge deck guardrails according to claim 2 is characterized in that: The connecting line of the two guide assemblies passes through the center of the saw disk in the hand-held cutting machine.

4. The cutting device for false seams of bridge deck guardrails according to claim 1, characterized in that: There are multiple bolt holes on the left and right sides of the positioning frame, each bolt hole is threadedly equipped with a positioning rod, and each positioning rod is threadedly equipped with a nut; When the false seam positioning tooling is moved into place and the inner side of the guide track is close to the bridge deck guardrail, rotate the positioning rod in the bolt hole so that one end of the positioning rod is pressed against the bridge deck guardrail, and then tighten the nut to fix the positioning rod.

5. The cutting device for false seams of bridge deck guardrails according to claim 4 is characterized in that: The positioning frame is also provided with a moving unit, which is used to move the positioning frame to a false seam position under the bridge deck guardrail through the moving unit after the false seam cutting is completed.

6. The cutting device for false seams of bridge deck guardrails according to claim 5 is characterized in that: The moving unit comprises a pair of channel steels, a wheel frame is arranged between the pair of channel steels for guiding, a moving wheel is rotatably arranged on the wheel frame, and a telescopic rod is arranged between the wheel frame and the positioning frame.

7. The cutting device for false seams of bridge deck guardrails according to claim 6, characterized in that: At least two moving units are arranged on the top of the positioning frame on one side facing the bridge deck guardrail.

8. The cutting device for false seams of bridge deck guardrails according to claim 6, characterized in that: The positioning frame is provided with at least one moving unit on a side facing inwards outside the bridge deck guard.