A bridge pier dismantling device

Abstract

This utility model discloses a bridge pier demolition device, applicable to the field of bridge demolition technology. It includes a clamp, a transport vehicle, and a hydraulic support device. The clamp consists of upper and lower clamps, and the clamping space can be adjusted via bolts. It also features shear keyways to enhance stability. The transport vehicle includes a frame equipped with outriggers and counterweights to ensure stability during operation. The hydraulic support device can convert the cut bridge pier from a vertical to a horizontal position. This utility model integrates pier fixing, posture conversion, and transportation, avoiding the problems of complex workflow connections and frequent equipment repositioning during construction. It has strong adaptability to various scenarios, effectively improving construction efficiency and safety, shortening the construction period, and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of bridge demolition technology, specifically to a bridge pier demolition device. Background Technology

[0002] With the upgrading of transportation infrastructure and the rapid development of urban construction, a large number of old bridges need to be demolished and rebuilt due to structural aging, inadequate design standards, or planning adjustments. As the core load-bearing structure of a bridge, the demolition of bridge piers is characterized by technical complexity, high safety risks, and numerous environmental constraints.

[0003] Currently, existing bridge pier demolition technologies mostly employ a split-operation model, where the pier is dismantled using crushing machinery, followed by unloading the fragments with lifting equipment and transporting them using machinery. However, this model has significant drawbacks: First, the alternating operation of multiple devices leads to complex process connections, requiring frequent adjustments to equipment positions, which both prolongs the construction period and increases costs. Second, the lack of dedicated guiding devices during unloading makes the structure susceptible to impact vibrations from falling fragments, threatening the safety of adjacent preserved structures. Traditional transportation methods require multiple hoisting and transfer operations, posing a risk of falling objects from heights and resulting in low efficiency. Furthermore, in confined space scenarios such as demolishing overpasses across highways and bridges in busy urban areas, existing equipment generally suffers from poor adaptability of fixed devices and limited operating range.

[0004] In summary, a bridge pier removal device needs to be proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a bridge pier demolition device to solve the problems mentioned in the background art, such as complex process connection when multiple devices work alternately, free falling of fragments, and poor device adaptability.

[0006] To achieve the above objectives, this utility model provides a bridge pier removal device, including a clamp, a vehicle body mechanism, and a hydraulic support device.

[0007] There are two clamps, an upper clamp and a lower clamp. The transport vehicle includes a frame, a first mounting base and a second mounting base. The first mounting base is located at the front of the frame, and the second mounting base is located at the rear of the frame, and the second mounting base is hinged to the lower clamp. One end of the hydraulic support device is hinged to the upper clamp, and the other end is hinged to the first mounting base.

[0008] Preferably, the upper clamp includes a first clamp body and a second clamp body. Both ends of the first clamp body are provided with first connecting flanges, and both ends of the second clamp body are provided with second connecting flanges. The first connecting flanges are connected to the corresponding second connecting flanges by bolts, thus connecting the first clamp body and the second clamp body end-to-end to form a closed structure.

[0009] Preferably, the inner side of the closed structure formed by the connection of the first hoop and the second hoop is a clamping space, and the size of the clamping space can be adjusted by adjusting the distance between the first hoop and the second hoop with bolts.

[0010] Preferably, both the first hoop and the second hoop are 180° arc-shaped structures.

[0011] Preferably, the lower clamp has the same structure as the upper clamp.

[0012] Preferably, one end of the hydraulic support device is connected to the upper clamp via a hinge, one side of the hinge is connected to the outer side of the first clamp, and the other side of the hinge is connected to the hydraulic support device.

[0013] Preferably, both the upper and lower clamps have shear keyways on their inner walls, and the shear keyways are rectangular or trapezoidal cross-section grooves.

[0014] Preferably, the pier removal device further includes a support module, which is mounted on the frame and has a rectangular or trapezoidal prism structure in cross-section.

[0015] Preferably, the transport vehicle further includes a first leg, a second leg, a third leg, and a fourth leg. The first leg and the second leg are symmetrically arranged on both sides of the front end of the frame, and the third leg and the fourth leg are symmetrically arranged on both sides of the rear end of the frame. When the bridge pier demolition device performs demolition work, the first leg extends a greater distance than the third leg, and the second leg extends a greater distance than the fourth leg.

[0016] Preferably, the pier removal device also includes a counterweight, which is detachably fixed to the front section of the frame by bolts, and the number of counterweights is at least one.

[0017] The present invention has the following advantages over the prior art:

[0018] 1. This utility model integrates three functions: fixing bridge piers, converting bridge piers from a vertical to a horizontal state after cutting, and transporting bridge piers. It avoids the problems of complex process connections and frequent equipment position adjustments in bridge construction caused by multiple equipment alternating operations in existing technologies, and can effectively shorten the construction period and save construction costs.

[0019] 2. This utility model combines clamps and hydraulic support devices to directly convert the cut bridge piers from a vertical state to a horizontal state for easy transportation. The bridge piers are then transported as a whole by fixing them with clamps, which avoids the impact of fragments falling freely on the surrounding environment during unloading at the construction site and hoisting, and also improves work efficiency.

[0020] 3. This utility model uses a transport vehicle as a carrier and integrates the devices required for multiple operation procedures in the prior art. Compared with fixed devices, it is less affected by scene restrictions during construction operations and has improved in terms of flexibility and adaptability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the transport vehicle of this utility model;

[0023] Figure 3 This is a schematic diagram illustrating the use of this utility model to fix a bridge pier to be demolished;

[0024] Figure 4 This is a schematic diagram illustrating the use of this utility model to fix the bridge pier after dismantling;

[0025] Figure 5 This is a schematic diagram of the hinge connection between the hydraulic support device and the upper clamp of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1—Clamping hoop; 11—Upper clamping hoop; 12—Lower clamping hoop;

[0028] 13—First hoop; 14—Second hoop; 15—Shear keyway;

[0029] 16—First connecting flange; 17—Second connecting flange; 18—Clamping space for clamping clamp;

[0030] 2—Transport vehicle; 21—Frame; 22—First mounting base;

[0031] 23—Second mounting base; 24—Support module; 25—First leg;

[0032] 26—Second leg; 27—Third leg; 28—Fourth leg;

[0033] 3—Hydraulic support device; 4—Counterweight; 5—Hinge;

[0034] 6—Bridge pier. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] like Figures 1 to 5 As shown, an embodiment of this utility model provides a bridge pier removal device, including a clamp 1, a transport vehicle 2, and a hydraulic support device 3. There are two clamps 1, namely an upper clamp 11 and a lower clamp 12. The transport vehicle 2 includes a frame 21, a first mounting base 22, and a second mounting base 23. The first mounting base 22 is located at the front end of the frame 21, and the second mounting base 23 is located at the rear end of the frame 21, and the second mounting base 23 is hinged to the lower clamp 12. One end of the hydraulic support device 3 is hinged to the upper clamp 11, and the other end is hinged to the first mounting base 22.

[0037] In this implementation case, clamp 1 is used to fix the pier 6 to be demolished. Upper clamp 11 is fixed to the upper part of pier 6, and lower clamp 12 is fixed to the lower part of pier 6. Upper clamp 11 and lower clamp 12 can be replaced with matching models according to the structural dimensions of the pier 6 to be demolished. Transport vehicle 2 is a modified existing product, possessing basic transport functions, serving as the carrier for the integrated pier demolition device and for transporting the demolished pier 6. Hydraulic support device 3 is used to support upper clamp 11, converting the fixed, cut pier 6 from its original vertical position to a horizontal position for convenient transport. By extending hydraulic support device 3, upper clamp 11 is fixed to the upper part of the pier 6 to be demolished, while lower clamp 12 is fixed to the lower part. After the pier 6 is cut and separated, hydraulic support device 3 retracts, changing the demolished pier 6 from a vertical position (e.g., ...) to a horizontal position for easy transport. Figure 3 (as shown) is converted to a horizontal state (e.g.) Figure 4 As shown in the figure, the equipment is transported to other work areas, avoiding the problems of complex process connections and frequent equipment position adjustments in the existing technology during bridge pier demolition construction, which can effectively shorten the construction period and save construction costs.

[0038] like Figure 5As shown, the upper clamp 11 includes a first clamp body 13 and a second clamp body 14. Both ends of the first clamp body 13 are provided with first connecting flanges 16, and both ends of the second clamp body 14 are provided with second connecting flanges 17. The first connecting flanges 16 are connected to the corresponding second connecting flanges 17 by bolts, thus connecting the first clamp body 13 and the second clamp body 14 end-to-end to form a closed structure. The upper clamp 11, composed of clamps that can be connected at both ends, makes the assembly of the upper clamp 11 more convenient and faster when fixing the bridge pier 6. Connecting the clamps at both ends with bolts and connecting flanges ensures the stability of the structural connection, providing higher reliability and strength, and also facilitating installation and disassembly.

[0039] In this embodiment, the inner side of the closed structure formed by the connection of the first hoop 13 and the second hoop 14 is the clamping space 18. The size of the clamping space 18 can be adjusted by adjusting the distance between the first hoop 13 and the second hoop with bolts. By adjusting the distance between the first hoop 13 and the second hoop 14 with bolts, the upper clamp 11 can fix the pier 6 within a certain range of dimensions, eliminating the need to replace the upper clamp 1 with a different size every time a pier 6 of a certain size is removed, thus reducing construction costs.

[0040] In this embodiment, both the first hoop 13 and the second hoop 14 are 180° arc-shaped structures. The upper clamp 11 formed by connecting the first hoop 13 and the second hoop 14 is a ring structure, which can be used to fix the bridge pier 6 with a circular cross-section. The two identical 180° arc-shaped hoop structures avoid the situation where the opening of a hoop section is too small due to the excessive curvature of a certain section, preventing the bridge pier 6 from being able to enter the inner side of the hoop for fixation.

[0041] In this embodiment, the lower clamp 12 and the upper clamp 11 have the same structure. Components with the same structure can be made of standardized materials, improving procurement efficiency. During construction, only one installation procedure needs to be mastered, reducing operational errors, shortening installation time, and improving construction efficiency.

[0042] like Figure 5 As shown, one end of the hydraulic support device 3 is connected to the upper clamp 11 via a hinge 5. One side of the hinge 5 is connected to the outer side of the first clamp 13, and the other side of the hinge 5 is connected to the hydraulic support device 3. By connecting the hydraulic support device 3 to the upper clamp 11 via the hinge 5, when the pier 6 is switched between vertical and horizontal states, the upper clamp 11 fixing the pier 6 can rotate around one end of the hydraulic support device 3, while restricting displacement in other directions, ensuring stability and controllability during the process.

[0043] In this embodiment, shear keyways 15 are provided on the inner walls of both the upper clamp 11 and the lower clamp 12. The shear keyways 15 are rectangular or trapezoidal cross-section grooves. By providing shear keyways 15 on the inner walls of the upper clamp 11 and the lower clamp 12, sliding of the upper clamp 11 and the lower clamp 12 when fixing the pier 6 can be prevented.

[0044] like Figure 4 As shown, the pier removal device also includes a support module 24, which is mounted on the frame 21. The support module 24 can be a prism structure with a rectangular or trapezoidal cross-section, a metal frame structure, or a solid wooden structure. It is used to support the pier 6 and maintain its horizontal stability during conversion to a horizontal state or during transportation. By setting the support module 24, not only is the stability improved during transportation, but the supporting force of the hydraulic support device 3 is also reduced, thereby increasing the service life of the hydraulic support device 3.

[0045] like Figure 2 As shown, the transport vehicle 2 also includes a first support leg 25, a second support leg 26, a third support leg 27, and a fourth support leg 28. The first support leg 25 and the second support leg 26 are symmetrically arranged on both sides of the front end of the frame 21, and the third support leg 27 and the fourth support leg 28 are symmetrically arranged on both sides of the rear end of the frame 21. When the pier demolition device performs demolition operations, the first support leg 25 extends a greater distance than the third support leg 27, and the second support leg 26 extends a greater distance than the fourth support leg 28. The support legs contact the ground during the demolition operation, providing support for the frame 21, preventing the frame 21 from overturning, and improving the stability of the overall device and the safety of construction. The longer extension distance of the first support leg 25 and the second support leg 26 increases the front support range and balances the overturning moment during operation. The shorter extension distance of the third support leg 27 and the fourth support leg 28 avoids excessive extension that occupies space and conflicts with other equipment, while also ensuring that the rear support force matches the load.

[0046] The pier removal device also includes a counterweight 4, which is detachably fixed to the front section of the frame 21 by bolts. There is at least one counterweight. In this embodiment, the counterweight 4 is a cast iron module, fixed to the front end of the frame 21 by bolts. The total mass of the counterweight 4 is not less than 120% of the estimated mass of the pier 6 to be removed. The counter-torque generated by the counterweight 4 at the front end of the frame 21 counteracts the overturning moment generated when transferring the pier 6, preventing the equipment from tipping over due to a shift in the center of gravity, thus ensuring the safety of personnel and equipment.

[0047] In this embodiment, the dismantling device is used, and the steps for dismantling the bridge pier are as follows:

[0048] Step 1: Move the dismantling device to the position of the pier 6 to be dismantled, align the rear end of the frame 21 with the pier 6 to be dismantled, and adjust it to a suitable distance.

[0049] Step 2, as follows Figure 3 As shown, the hydraulic support device 3 extends and fixes the upper part of the pier 6 to be dismantled through the upper clamp 11, while fixing the lower part of the pier 6 to be dismantled through the lower clamp 12.

[0050] Step 3: After the bridge pier 6 is cut and separated using the cutting device, the hydraulic support device 3 retracts, raising the dismantled bridge pier 6 from a vertical position (e.g., ...). Figure 3 (as shown) is converted to a horizontal state (e.g.) Figure 4 (as shown), and transported to other work areas.

[0051] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A bridge pier dismantling device, characterized in that, include: The clamp (1) is two, and the two clamps (1) are an upper clamp (11) and a lower clamp (12); The transport vehicle (2) includes a frame (21), a first mounting base (22) and a second mounting base (23). The first mounting base (22) is located at the front end of the frame (21), and the second mounting base (23) is located at the rear end of the frame (21). The second mounting base (23) is hinged to the lower clamp (12). The hydraulic support device (3) is hinged at one end to the upper clamp (11) and at the other end to the first mounting base (22).

2. The bridge pier demolition device according to claim 1, characterized in that: The upper clamp (11) includes a first clamp body (13) and a second clamp body (14). The first clamp body (13) is provided with a first connecting flange (16) at both ends, and the second clamp body (14) is provided with a second connecting flange (17) at both ends. The first connecting flange (16) is connected to the corresponding second connecting flange (17) by bolts, so that the first clamp body (13) and the second clamp body (14) are connected end to end to form a closed structure.

3. The bridge pier demolition device according to claim 2, characterized in that: The inner side of the closed structure formed by the connection of the first hoop (13) and the second hoop (14) is a clamping space (18). The size of the clamping space (18) can be adjusted by adjusting the distance between the first hoop (13) and the second hoop (14) using the bolt.

4. The bridge pier demolition device according to claim 2, characterized in that: Both the first hoop (13) and the second hoop (14) are 180° arc-shaped structures.

5. A bridge pier demolition device according to any one of claims 1-4, characterized in that: The lower clamp (12) has the same structure as the upper clamp (11).

6. A bridge pier demolition device according to claim 2, characterized in that: One end of the hydraulic support device (3) is connected to the upper clamp (11) via a hinge (5), one side of the hinge (5) is connected to the outside of the first clamp body (13), and the other side of the hinge (5) is connected to the hydraulic support device (3).

7. The bridge pier demolition device according to claim 1, characterized in that: The inner walls of the upper clamp (11) and the lower clamp (12) are provided with shear keyways (15), which are rectangular or trapezoidal cross-section grooves.

8. A bridge pier demolition device according to claim 1, characterized in that: The pier removal device also includes a support module (24), which is mounted on the frame (21). The support module (24) is a prism structure with a rectangular cross-section or a prism structure with a trapezoidal cross-section.

9. A bridge pier demolition device according to claim 1, characterized in that: The transport vehicle (2) also includes a first leg (25), a second leg (26), a third leg (27) and a fourth leg (28). The first leg (25) and the second leg (26) are symmetrically arranged on both sides of the front end of the frame (21), and the third leg (27) and the fourth leg (28) are symmetrically arranged on both sides of the rear end of the frame (21). When the pier demolition device performs demolition work, the first leg (25) extends a greater distance than the third leg (27), and the second leg (26) extends a greater distance than the fourth leg (28).

10. A bridge pier demolition device according to claim 1, characterized in that: The pier removal device also includes a counterweight (4), which is detachably fixed to the front end of the frame (21) by bolts, and the number of the counterweight (4) is at least one.

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