Annular energy-gathered cutting device for blasting demolition of bridge steel tube concrete member

Abstract

The utility model provides an annular shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member, which comprises an annular shaped charge cutting cable, the shaped charge cutting cable is composed of a first half pipe and a second half pipe which are in butt joint up and down, and a first connecting strip is fixed on the outer wall of the first half pipe and close to the two ends. And an elastic strip is assembled on the upper surface of each group of first connecting strips. According to the implementation mode, the energy-gathered cutting cable composed of the two sets of half pipes can be connected to the outer wall of the bridge steel pipe concrete member, the step of manual punching or gluing is omitted, and the preparation work of blasting cutting is simple and convenient. And meanwhile, the diameter of the energy-gathered cutting rope can be adjusted through the locking assembly, so that the device is suitable for bridge steel pipe concrete members of various sizes, the application range of the device is widened, and the explosive cutting strength generated by the bridge steel pipe concrete members can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of shaped charge cutting technology, and in particular to a ring-shaped shaped charge cutting device for blasting and demolishing steel-concrete composite components of bridges. Background Technology

[0002] When dismantling steel-concrete composite components in bridges that pose safety hazards, blasting is usually employed.

[0003] Currently, demolition using explosives typically employs linear shaped charge cutting cables. However, when applied to concrete-tube steel structures, because the cross-section of these structures is circular, the linear shaped charge cutting cables can only be installed along the axial direction of the structure and cannot be installed around its outer circumference, thus affecting the cutting effect. Utility Model Content

[0004] The summary section of this utility model is intended to briefly introduce the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] This utility model provides a ring-shaped energy-concentrating cutting device for the blasting demolition of steel-concrete composite components of bridges, in order to solve the technical problems mentioned in the background section above.

[0006] The present invention relates to a ring-shaped energy-concentrating cutting device for blasting and demolishing steel-concrete composite components of bridges. The energy-concentrating cutting cable is composed of a first half-tube and a second half-tube connected vertically. A first connecting strip is fixed on the outer wall of the first half-tube near both ends. An elastic strip is fitted on the upper surface of each set of first connecting strips. Two sets of second connecting strips are fixed on the outer wall of the second half-tube at positions corresponding to the first connecting strips. Locking components that engage with the elastic strips are fitted at the front and rear ends of the second connecting strips.

[0007] The locking assembly includes a base shaft rotatably fitted inside the second connecting strip. Both ends of the base shaft extend to the outside of the second connecting strip and are connected to a positioning frame. A storage groove is provided on the side of the positioning frame near the base shaft. An inner liner is slidably provided in the storage groove. A convex shaft is fixed between two sets of inner liners. The convex shaft is located on the outer wall of the two sets of inner liners and near the top. A driven sleeve is fitted on the outer wall of the base shaft near both ends. A driven strip that fits against the outer wall of the inner liner is fixed on the curved outer wall of the driven sleeve. Multiple sets of blind holes are provided on the side of the inner liner near the driven strip. A plug that slides in the blind holes is fixed on one side of the outer wall of the driven strip.

[0008] Optionally, multiple sets of trapezoidal grooves are equidistantly formed on the inner and outer curved walls of both the first and second half-tubes.

[0009] Optionally, the outer wall of the base shaft is provided with an external thread at the contact position with the driven sleeve, and the inner wall of the driven sleeve is provided with a matching internal thread at the corresponding position.

[0010] Optionally, the driven sleeve has two sets of constraint holes at one end near the positioning frame, and a constraint rod fixed to the outer wall of the positioning frame is slidably disposed in each set of constraint holes.

[0011] Optionally, the two sets of sidewalls of the storage slot are provided with travel grooves, and the two arms of the inner liner are fixed with sliders that slide in the travel grooves.

[0012] Optionally, multiple sets of blind holes are evenly distributed on the outer wall of the inner lining strip, and a spring retainer is provided below the insertion rod and embedded in the outer wall of the driven strip.

[0013] Optionally, the distance between the spring retaining bead and the insert rod is equal to the distance between two adjacent sets of blind holes.

[0014] Optionally, a handle is fixed to the curved outer wall of the convex shaft, and the handle is located in the center of the outer wall of the convex shaft.

[0015] Optionally, a positioning channel is provided in the second connecting strip at the contact position with the base shaft, and clearance channels matching the diameter of the outer wall of the driven sleeve are provided at both ends of the positioning channel.

[0016] Optionally, the outer wall of the positioning frame is provided with a through circular hole, and an internal hexagonal shank fixed to the end face of the base shaft is rotatably connected inside the circular hole. The internal hexagonal shank is fixedly rotatably located inside the circular hole using a bearing.

[0017] The above embodiments of this utility model have the following beneficial effects:

[0018] The shaped charge cutting cable, consisting of two sets of half-tubes, can be connected to the outer wall of the steel-concrete composite structure of the bridge, eliminating the need for manual drilling or gluing, thus simplifying the preparation for explosive cutting.

[0019] Meanwhile, the diameter of the shaped cutting cable can be adjusted by locking components, thus making it suitable for various sizes of bridge steel-concrete composite components, expanding the applicability of the device, and ensuring the explosive cutting strength generated on bridge steel-concrete composite components. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an embodiment of the annular energy-concentrating cutting device for blasting and demolishing steel-concrete composite bridge components according to the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of one embodiment of the first half-tube of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of one embodiment of the second half-tube of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of one embodiment of the partial locking component of this utility model;

[0025] Figure 5 This is an unfolded internal structure diagram of one embodiment of the positioning frame of this utility model;

[0026] Figure 6 This is a structural schematic diagram of one embodiment of the driven sleeve and driven bar of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Energy-concentrating cutting cable; 110. First half-tube; 120. Locking assembly; 121. Base shaft; 122. Socket hexagon shank; 123. Positioning frame; 1231. Storage slot; 1232. Constraint rod; 124. Protruding shaft; 125. Blind hole; 126. Inner liner strip; 127. Driven strip; 1271. Insert rod; 1272. Spring retaining ball; 128. Driven sleeve; 1281. Constraint hole; 130. Second half-tube; 140. Trapezoidal groove; 170. First connecting strip; 171. Elastic strip; 180. Second connecting strip; 181. Positioning channel; 182. Clearance channel. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 6 As shown, the annular energy-concentrating cutting device for the blasting demolition of steel-concrete composite bridge components of this utility model includes an annularly arranged energy-concentrating cutting cable 100, which is composed of a first half-tube 110 and a second half-tube 130 joined together vertically. The first half-tube 110 and the second half-tube 130 are arranged in a semi-circular arc shape, and the first half-tube 110 and the second half-tube 130 are processed by a straight energy-concentrating cutting cable. Those skilled in the art can select the energy-concentrating cutting cable for processing according to the actual situation.

[0034] The outer wall of the first half-tube 110 and near both ends are fixed with a first connecting strip 170. The upper surface of each set of first connecting strips 170 is equipped with an elastic strip 171. The outer wall of the second half-tube 130 is fixed with two sets of second connecting strips 180 at positions corresponding to the first connecting strips 170. The front and rear ends of the second connecting strips 180 are equipped with locking components 120 that engage with the elastic strips 171.

[0035] The locking assembly 120 includes a base shaft 121 rotatably fitted inside the second connecting strip 180. Both ends of the base shaft 121 extend to the outside of the second connecting strip 180 and are connected to a positioning frame 123. A storage groove 1231 is provided on the side of the positioning frame 123 near the base shaft 121. An inner lining strip 126 is slidably provided in the storage groove 1231. A convex shaft 124 is fixed between the two sets of inner lining strips 126. The convex shaft 124 is located on the outer wall of the two sets of inner lining strips 126 and near the top. A driven sleeve 128 is fitted on the outer wall of the base shaft 121 and near both ends. A driven strip 127 that fits against the outer wall of the inner lining strip 126 is fixed on the curved outer wall of the driven sleeve 128. Multiple blind holes 125 are provided on the side of the inner lining strip 126 near the driven strip 127. A plug rod 1271 that slides in the blind hole 125 is fixed on the outer wall of one side of the driven strip 127.

[0036] The outer wall of the base shaft 121 has an external thread at the contact position with the driven sleeve 128, and the inner wall of the driven sleeve 128 has a matching internal thread at the corresponding position.

[0037] Multiple sets of blind holes 125 are evenly distributed on the outer wall of the inner lining strip 126. A spring retainer 1272 is embedded in the outer wall of the driven strip 127 below the insert rod 1271. The distance between the spring retainer 1272 and the insert rod 1271 is equal to the distance between two adjacent sets of blind holes 125.

[0038] When installing the shaped charge cutting cable 100, the first half-pipe 110 and the second half-pipe 130 are fitted onto the outer wall of the steel-concrete composite structure to be blasted. Then, an upward torque is applied to the convex shaft 124, which will drive the positioning frame 123 at both ends to rotate the base shaft 121 until the convex shaft 124 rotates from below the second connecting strip 180 to above the first connecting strip 170. During this process, the convex shaft 124 will compress the elastic strip 171 and deform it downwards, allowing the convex shaft 124 to pass through. The elastic strip 171 will then return to its original position and abut against the convex shaft 124, thereby fixing the convex shaft 124 to the top of the first connecting strip 170. This allows the first connecting strip 170 and the second connecting strip 180 to move, ultimately fixing the shaped charge cutting cable 100 to the outer wall of the steel-concrete composite structure to facilitate blasting operations.

[0039] When installing steel-concrete composite components of different sizes, an external force can be applied to the first half-pipe 110 and the second half-pipe 130, causing them to bend and deform. The trapezoidal grooves 140 on the inner and outer curved walls provide bending space for the first half-pipe 110 and the second half-pipe 130, thus preventing breakage. At this time, a hex wrench can be inserted into the inner hex shank 122, and a rotational force can be applied to rotate the base shaft 121. The two sets of driven sleeves 128 on the outer wall will move closer together (the driven sleeves 128 gradually move away from the positioning frame 123), and... The driven strip 127 moves accordingly. When the driven sleeve 128 can no longer move on the outer wall of the base shaft 121, the insertion rod 1271 has already extended out of the blind hole 125. At this time, a vertically upward external force can be applied to the convex shaft 124, and the inner lining strip 126, which is fixedly connected at both ends, will rise in a straight line along the storage groove 1231 to make up for the gap between the first connecting strip 170 and the second connecting strip 180, thereby adapting to the outer wall size of the steel pipe concrete component. Finally, the base shaft 121 is rotated in the opposite direction, so that the driven sleeve 128 returns to its original position, and the insertion rod 1271 will enter the blind hole 125, thus completing the locking purpose of the inner lining strip 126 and the positioning frame 123.

[0040] When the inner liner 126 rises, it compresses the spring retainer 1272 to contract. When it aligns with the adjacent blind hole 125 below, it automatically returns to its original position, thus creating a locking effect. At this time, the insertion rod 1271 of the trapezoidal manipulator is aligned with the blind hole 125, and the base shaft 121 can be directly rotated to allow the insertion rod 1271 to enter the blind hole 125. This achieves precise and efficient locking of the inner liner 126 and the positioning frame 123, which can indirectly improve the installation efficiency of the energy-concentrating cutting cable 100 and enhance the blasting work on steel pipe concrete components.

[0041] Please refer to this carefully. Figure 2 and Figure 3 Multiple sets of trapezoidal grooves 140 are equally spaced on the inner and outer curved surfaces of the first half-pipe 110 and the second half-pipe 130.

[0042] The trapezoidal groove 140 provides space for the deformed first half-tube 110 and second half-tube 130, which can prevent the fracture that occurs when the two deform, thereby meeting the requirements of shaped charge blasting of steel tube concrete components of various sizes.

[0043] Please refer to this carefully. Figure 5 and Figure 6 The driven sleeve 128 has two sets of constraint holes 1281 at one end near the positioning frame 123, and a constraint rod 1232 fixed to the outer wall of the positioning frame 123 is slidably provided in each set of constraint holes 1281.

[0044] The constraint rod 1232 and the constraint hole 1281 cooperate with each other to limit the driven sleeve 128. When the base shaft 121 rotates, the driven sleeve 128 can move linearly on its outer wall.

[0045] Please refer to this carefully. Figure 5 The two side walls of the storage slot 1231 are provided with stroke grooves, and the two arms of the inner liner 126 are fixed with sliders that slide in the stroke grooves.

[0046] The stroke groove limits the upward stroke of the slider, preventing the inner liner 126 from falling out of the storage groove 1231. At the same time, it positions the blind hole 125 at the bottom, ensuring that the blind hole 125 at the bottom is aligned with the insertion rod 1271.

[0047] Please refer to this carefully. Figure 4 A handle is fixed to the curved outer wall of the convex shaft 124, and the handle is located in the center of the outer wall of the convex shaft 124.

[0048] The handle allows for easy manual application of external force along the convex shaft 124, causing it to rotate above the elastic strip 171, thereby achieving the locking effect of the two sets of half tubes.

[0049] Please refer to this carefully. Figure 4 A positioning channel 181 is provided in the second connecting strip 180 at the contact position with the base shaft 121, and clearance channels 182 are provided at both ends of the positioning channel 181 to match the diameter of the outer wall of the driven sleeve 128.

[0050] This allows the base shaft 121 to rotate within the positioning channel 181, causing the convex shaft 124 to rotate to the top of the elastic strip 171 to achieve the locking purpose of the first connecting strip 170 and the second connecting strip 180.

[0051] The clearance channel 182 provides space for the movement of the driven sleeve 128, ensuring that the insertion rod 1271 has enough space to move and separate from the blind hole 125. At the same time, the spring retaining ball 1272 can create a locking effect with the blind hole 125 during the raising and lowering of the inner liner 126, so that the inner liner 126 can be accurately aligned with the insertion rod 1271 after it is raised, making the raising and adjusting step of the inner liner 126 efficient.

[0052] Please refer to this carefully. Figure 4 The outer wall of the positioning frame 123 has a through circular hole, and an internal hexagonal shank 122 fixed to the end face of the base shaft 121 is rotatably connected inside the circular hole. The internal hexagonal shank 122 is fixedly rotatably located inside the circular hole using a bearing.

[0053] The internal hexagonal shank 122 allows for easy manual application of external force to the base shaft 121 using a hexagonal wrench. This drives the base shaft 121 to rotate and engage the inner lining strip 126 for locking purposes, thereby adjusting the size of the locking assembly to fit the steel-concrete composite structure.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ring shaped shaped charge cutting device for blasting demolition of a bridge steel tube concrete member, characterized in that, The utility model provides a cutting cable, the cutting cable is composed of first half pipe and second half pipe which butt joint up and down, the outer wall of first half pipe is fixed with first connecting strip near both ends, the upper surface of each group of first connecting strip is equipped with elastic strip, the outer wall of second half pipe is fixed with two groups of second connecting strip corresponding to first connecting strip, the front and back end of second connecting strip is equipped with locking assembly which is connected with elastic strip, The locking assembly comprises a base shaft rotatably sleeved in the second connecting strip, the both ends of the base shaft extend to the outside of the second connecting strip and are connected with a positioning frame, a storage groove is formed in the side of the positioning frame close to the base shaft, an inner lining strip is slidably arranged in the storage groove, a convex shaft is fixed between the two groups of inner lining strips, the convex shaft is located on the outer wall of the two groups of inner lining strips and close to the top, a driven sleeve is sleeved on the outer wall of the base shaft close to both ends, a driven strip is fixed on the curved outer wall of the driven sleeve and is in close contact with the outer wall of the inner lining strip, a plurality of blind holes are formed in the side of the inner lining strip close to the driven strip, and an insertion rod is fixed on the outer wall of the side of the driven strip and slides in the blind hole.

2. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized in that, A plurality of trapezoidal grooves are equidistantly formed in the curved inner and outer walls of the first half pipe and the second half pipe.

3. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized in that, An external thread is formed on the outer wall of the base shaft in contact with the driven sleeve, and a matching internal thread is formed on the inner wall of the driven sleeve in the corresponding position.

4. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, Two groups of constraint holes are formed in the end of the driven sleeve close to the positioning frame, and a constraint rod fixed on the outer wall of the positioning frame is slidably arranged in each group of constraint holes.

5. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, Travel grooves are formed in the two side walls of the storage groove, and a sliding block is fixed on the two side arms of the inner lining strip and slides in the travel groove.

6. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, A plurality of blind holes are equidistantly distributed on the outer wall of the inner lining strip, and a spring clamping bead is embedded in the outer wall of the driven strip below the insertion rod.

7. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 6, characterized in that, The distance between the spring clamping bead and the insertion rod is equal to the distance between the adjacent two groups of blind holes.

8. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, A handle is fixed on the curved outer wall of the convex shaft and is located in the central position of the outer wall of the convex shaft.

9. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, A positioning channel is formed in the second connecting strip in contact with the base shaft, and a give-way channel matching the diameter of the outer wall of the driven sleeve is formed at both ends of the positioning channel.

10. The ring-shaped shaped charge cutting device for blasting demolition of a bridge steel pipe concrete member according to claim 1, characterized by, A through circular hole is formed in the outer wall of the positioning frame, and an inner hexagonal handle fixed on the end surface of the base shaft is rotatably connected in the circular hole, and the inner hexagonal handle is rotatably arranged in the circular hole by a bearing.

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