Shock-resistant rotation supporting device of bridge girder erection machine

Abstract

The utility model belongs to the field of rotary supporting equipment, and particularly relates to an anti-impact bridge erecting machine rotary supporting device which comprises a lower supporting seat, an annular supporting plate is rotatably installed at the top of the lower supporting seat, an upper supporting seat is fixedly installed at the top of the annular supporting plate, and an anti-stamping seat is arranged above the upper supporting seat. A plurality of moving grooves are annularly formed in the outer side of the annular supporting plate at equal intervals, moving plates are slidably mounted in the moving grooves, supporting rods are fixedly mounted at the tops of the moving plates, and the top ends of the supporting rods penetrate through the upper supporting seat and are fixedly mounted on the anti-stamping seat. The bridge girder erection machine is reasonable in design, efficient impact buffering is achieved through the damper, the anti-stamping spring and other structures, rotation is flexibly and accurately controlled through the driving mechanism and the locking mechanism, rotation stability and structure firmness are guaranteed through the idler wheels, the rotation bearing and the triangular reinforcing plate, and safety, efficiency and accuracy of operation of the bridge girder erection machine are comprehensively improved.

Description

Technical Field

[0001] This utility model relates to the field of slewing support equipment technology, and in particular to an impact-resistant bridge erecting machine slewing support device. Background Technology

[0002] A bridge erecting machine is a device that places prefabricated bridge beams onto prefabricated bridge piers. Bridge erecting machines fall under the category of cranes because their main function is to lift the bridge beams, transport them to their designated positions, and then lower them.

[0003] The slewing support device of a bridge erecting machine plays a crucial role in its operation. It not only needs to support the superstructure of the bridge erecting machine, but also needs to maintain stability during the slewing operation. However, existing bridge erecting machine slewing support devices have poor impact resistance when faced with the impact forces generated under complex working conditions, which can easily lead to damage to the device and thus affect the normal operation of the bridge erecting machine and the progress of bridge construction. At the same time, some slewing support devices are not flexible and stable enough during slewing operation, making it difficult to meet the requirements of efficient and precise bridge erecting operations. Therefore, we propose an impact-resistant bridge erecting machine slewing support device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an impact-resistant bridge erecting machine slewing support device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An impact-resistant bridge erecting machine slewing support device includes a lower support base, an annular support plate rotatably mounted on the top of the lower support base, an upper support base fixedly mounted on the top of the annular support plate, and an anti-impact seat above the upper support base. Multiple movable slots are equally spaced in a ring on the outer side of the annular support plate, and movable plates are slidably mounted within these slots. A support rod is fixedly mounted on the top of each movable plate, with the top end of the support rod penetrating the upper support base and fixedly mounted on the anti-impact seat. An annular connecting plate is fixedly mounted on the outer side of the annular support plate, and multiple dampers are fixedly mounted on the top of the annular connecting plate. The top ends of the dampers are fixedly mounted on corresponding movable plates. Multiple anti-impact springs are equally spaced in a ring on the annular connecting plate, with the top ends of the anti-impact springs mounted on corresponding movable plates.

[0007] Preferably, an annular fixing plate is fixedly installed on the top of the lower support, a horizontal plate is fixedly installed inside the annular fixing plate, and a rotation mechanism is provided between the upper support and the horizontal plate.

[0008] Preferably, the rotary mechanism includes a rotary seat and a rotary bearing. The rotary seat is fixedly installed on the bottom of the upper support seat, and a rotary bearing is installed between the rotary seat and the horizontal plate.

[0009] Preferably, the bottom of the lower support base is provided with an annular groove, and multiple rollers are installed at equal intervals on the bottom of the annular connecting plate, and the rollers are rolled in the annular groove. A locking mechanism is provided between the annular connecting plate and the lower support base.

[0010] Preferably, the locking mechanism includes a fixing groove, a threaded hole, and a fixing bolt. The top of the lower support is provided with multiple fixing grooves at equal intervals in an annular shape. The threaded hole is opened on the annular connecting plate, and the fixing bolt is installed in the threaded hole with its internal thread. The fixing bolt is adapted to the fixing groove.

[0011] Preferably, an L-shaped frame is fixedly installed on one side of the lower support base, a drive motor is fixedly installed on the L-shaped frame, and a drive mechanism is provided between the drive motor and the annular connecting plate.

[0012] Preferably, the driving mechanism includes a driving gear and a rack, the rack is fixedly mounted on the outside of the annular connecting plate, the driving gear is fixedly mounted on the output shaft of the driving motor, and the driving gear meshes with the rack.

[0013] Preferably, the top of the annular connecting plate is fixedly installed with multiple triangular reinforcing plates at equal intervals in a ring, and one side of the triangular reinforcing plates is fixedly connected to the annular support plate.

[0014] The beneficial effects of this utility model are:

[0015] 1. When the anti-impact seat is subjected to impact force, the anti-impact seat can move downward. The anti-impact seat is carried by the support rod to move the moving plate downward. The moving plate can squeeze the damper and the anti-impact spring. Through the deformation of the damper and the anti-impact spring, the impact force can be buffered, thereby achieving the purpose of increasing the anti-impact performance of the bridge erecting machine's slewing support device.

[0016] 2. By using the fixing bolts and fixing grooves, the ring connecting plate can be released. With the cooperation of the drive motor, drive gear and rack, the drive gear can drive the ring connecting plate to rotate through the rack. The ring connecting plate can drive the ring support plate, upper support seat and anti-impact seat to rotate, thereby realizing the purpose of the upper support seat to rotate.

[0017] 3. By providing rollers, the annular connecting plate and the lower support can rotate stably. By providing a rotating seat and a slewing bearing, the upper support can rotate stably. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an impact-resistant bridge erecting machine slewing support device proposed in this utility model;

[0019] Figure 2This is a bottom-view three-dimensional structural diagram of an impact-resistant bridge erecting machine slewing support device proposed in this utility model;

[0020] Figure 3 This is a cross-sectional three-dimensional structural diagram of an impact-resistant bridge erecting machine slewing support device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of part A of the impact-resistant bridge erecting machine slewing support device proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of part B of the impact-resistant bridge erecting machine slewing support device proposed in this utility model.

[0023] In the diagram: 101, lower support seat; 102, annular support plate; 103, upper support seat; 104, anti-impact seat; 201, annular connecting plate; 202, triangular reinforcing plate; 203, moving groove; 204, moving plate; 205, support rod; 301, damper; 302, anti-impact spring; 401, annular fixing plate; 402, horizontal plate; 403, rotating seat; 404, slewing bearing; 501, fixing groove; 502, threaded hole; 503, fixing bolt; 601, annular groove; 602, roller; 701, rack; 702, L-shaped frame; 703, drive motor; 704, drive gear. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0025] This application discloses an impact-resistant bridge erecting machine slewing support device.

[0026] Reference Figure 1-5 An impact-resistant bridge erecting machine slewing support device includes a lower support base 101, an annular support plate 102 rotatably mounted on the top of the lower support base 101, an upper support base 103 fixedly mounted on the top of the annular support plate 102, and an impact-resistant seat 104 above the upper support base 103. Multiple equally spaced movable slots 203 are evenly spaced on the outer side of the annular support plate 102, and movable plates 204 are slidably mounted within the movable slots 203. A support rod 205 is fixedly mounted on the top of the movable plates 204. The top end of the support rod 205 passes through the upper support seat 103 and is fixedly installed on the anti-impact seat 104; an annular connecting plate 201 is fixedly installed on the outer side of the annular support plate 102, and multiple dampers 301 are fixedly installed on the top of the annular connecting plate 201. The top end of the damper 301 is fixedly installed on the corresponding moving plate 204. Multiple anti-impact springs 302 are installed in an annular pattern at equal intervals on the annular connecting plate 201, and the top end of the anti-impact spring 302 is installed on the corresponding moving plate 204.

[0027] In this embodiment, an annular fixing plate 401 is fixedly installed on the top of the lower support base 101, and a horizontal plate 402 is fixedly installed inside the annular fixing plate 401. A rotation mechanism is provided between the upper support base 103 and the horizontal plate 402. The rotation mechanism includes a rotating seat 403 and a rotation bearing 404. The rotating seat 403 is fixedly installed on the bottom of the upper support base 103, and the rotation bearing 404 is installed between the rotating seat 403 and the horizontal plate 402. The cooperation between the rotation bearing 404 and the rotating seat 403 greatly reduces the frictional resistance when the upper support base 103 rotates, enabling the upper support base 103 to achieve high-precision, low-loss, and stable rotation, effectively ensuring the accurate positioning and reliable operation of the bridge erecting machine during rotation operations.

[0028] In this embodiment, the bottom of the lower support base 101 is provided with an annular groove 601, and multiple rollers 602 are equally spaced installed on the bottom of the annular connecting plate 201. The rollers 602 are rolled within the annular groove 601, and a locking mechanism is provided between the annular connecting plate 201 and the lower support base 101. The rolling design of the rollers 602 within the annular groove 601 provides flexible and stable support for the rotation of the annular connecting plate 201, reducing jamming during rotation. It also facilitates cooperation with the locking mechanism, enabling rapid switching between rotating and fixed states, thus improving the operating efficiency of the bridge erecting machine.

[0029] In this embodiment, the locking mechanism includes a fixing groove 501, a threaded hole 502, and a fixing bolt 503. The top of the lower support base 101 has multiple fixing grooves 501 arranged in a ring at equal intervals. The threaded hole 502 is formed on the annular connecting plate 201, and the fixing bolt 503 is threaded into the threaded hole 502, with the fixing bolt 503 fitting into the fixing groove 501. This locking mechanism has a simple structure and is easy to operate. When the bridge erecting machine does not need to rotate, the tight fit between the fixing bolt 503 and the fixing groove 501 firmly locks the annular connecting plate 201, preventing unnecessary rotation due to external interference and enhancing the overall stability and safety of the device.

[0030] In this embodiment, an L-shaped frame 702 is fixedly installed on one side of the lower support base 101. A drive motor 703 is fixedly installed on the L-shaped frame 702, and a drive mechanism is provided between the drive motor 703 and the annular connecting plate 201. The drive mechanism includes a drive gear 704 and a rack 701. The rack 701 is fixedly installed on the outer side of the annular connecting plate 201, and the drive gear 704 is fixedly installed on the output shaft of the drive motor 703, and the drive gear 704 meshes with the rack 701. The drive motor 703 provides stable and strong power for the rotation of the annular connecting plate 201 through the meshing transmission of the drive gear 704 and the rack 701. The rotation speed and angle can be precisely controlled according to the actual operation requirements, making the bridge erecting machine's rotation operation more intelligent and automated.

[0031] In this embodiment, multiple triangular reinforcing plates 202 are fixedly installed at equal intervals in a ring on the top of the annular connecting plate 201, and one side of the triangular reinforcing plate 202 is fixedly connected to the annular support plate 102. Utilizing the stable structural characteristics of a triangle, the triangular reinforcing plates 202 significantly enhance the connection strength and overall rigidity between the annular connecting plate 201 and the annular support plate 102, enabling the device to effectively disperse stress when subjected to large loads and impacts, thus preventing structural deformation from affecting the normal operation of the bridge erecting machine.

[0032] In this invention, when the anti-impact seat 104 is subjected to an impact force, it can move downwards. The anti-impact seat 104 is carried downwards by the support rod 205 to the moving plate 204. The moving plate 204 can compress the damper 301 and the anti-impact spring 302. Through the deformation of the damper 301 and the anti-impact spring 302, the impact force can be buffered, thereby increasing the anti-impact performance of the bridge erecting machine's slewing support device. By rotating the fixing bolt 503, under the action of the threaded hole 502, the fixing bolt 503 can disengage from the corresponding fixing groove 501, thus releasing the annular connecting plate 201. The purpose is to achieve the following: by starting the drive motor 703, the drive motor 703 can drive the drive gear 704 to rotate. The drive gear 704 can drive the annular connecting plate 201 to rotate through the rack 701. The annular connecting plate 201 can drive the annular support plate 102, the upper support seat 103 and the anti-impact seat 104 to rotate, thereby achieving the purpose of rotating the upper support seat 103. By providing the roller 602, the annular connecting plate 201 and the lower support seat 101 can be stably rotated. By providing the rotating seat 403 and the rotary bearing 404, the upper support seat 103 can be stably rotated.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slewing support device for an impact-resistant bridge erecting machine, characterized in that, It includes a lower support base (101), an annular support plate (102) is rotatably mounted on the top of the lower support base (101), an upper support base (103) is fixedly mounted on the top of the annular support plate (102), and an anti-impact seat (104) is provided above the upper support base (103). The outer side of the annular support plate (102) is provided with a plurality of moving grooves (203) at equal intervals in an annular shape. A moving plate (204) is slidably installed in the moving groove (203). A support rod (205) is fixedly installed on the top of the moving plate (204), and the top end of the support rod (205) passes through the upper support seat (103) and is fixedly installed on the anti-impact seat (104). An annular connecting plate (201) is fixedly installed on the outer side of the annular support plate (102). Multiple dampers (301) are fixedly installed on the top of the annular connecting plate (201). The top of the damper (301) is fixedly installed on the corresponding moving plate (204). Multiple anti-impact springs (302) are installed in an annular pattern at equal intervals on the annular connecting plate (201), and the top of the anti-impact spring (302) is installed on the corresponding moving plate (204).

2. The impact-resistant bridge erecting machine slewing support device according to claim 1, characterized in that, The top of the lower support (101) is fixedly installed with an annular fixing plate (401), and a horizontal plate (402) is fixedly installed inside the annular fixing plate (401). A rotation mechanism is provided between the upper support (103) and the horizontal plate (402).

3. The impact-resistant bridge erecting machine slewing support device according to claim 2, characterized in that, The rotary mechanism includes a rotary seat (403) and a rotary bearing (404). The rotary seat (403) is fixedly installed on the bottom of the upper support seat (103), and the rotary bearing (404) is installed between the rotary seat (403) and the horizontal plate (402).

4. The impact-resistant bridge erecting machine slewing support device according to claim 1, characterized in that, The bottom of the lower support base (101) is provided with an annular groove (601), and multiple rollers (602) are installed at equal intervals on the bottom of the annular connecting plate (201). The rollers (602) are rolled in the annular groove (601), and a locking mechanism is provided between the annular connecting plate (201) and the lower support base (101).

5. The impact-resistant bridge erecting machine slewing support device according to claim 4, characterized in that, The locking mechanism includes a fixing groove (501), a threaded hole (502) and a fixing bolt (503). The top of the lower support base (101) is provided with multiple fixing grooves (501) at equal intervals in an annular shape. The threaded hole (502) is opened on the annular connecting plate (201). The fixing bolt (503) is installed in the threaded hole (502) and the fixing bolt (503) is adapted to the fixing groove (501).

6. The impact-resistant bridge erecting machine slewing support device according to claim 1, characterized in that, An L-shaped frame (702) is fixedly installed on one side of the lower support base (101), and a drive motor (703) is fixedly installed on the L-shaped frame (702). A drive mechanism is provided between the drive motor (703) and the annular connecting plate (201).

7. The impact-resistant bridge erecting machine slewing support device according to claim 6, characterized in that, The drive mechanism includes a drive gear (704) and a rack (701). The rack (701) is fixedly installed on the outside of the annular connecting plate (201), and the drive gear (704) is fixedly installed on the output shaft of the drive motor (703). The drive gear (704) meshes with the rack (701).

8. The impact-resistant bridge erecting machine slewing support device according to claim 1, characterized in that, The top of the annular connecting plate (201) is fixedly installed with multiple triangular reinforcing plates (202) at equal intervals in a ring, and one side of the triangular reinforcing plate (202) is fixedly connected to the annular support plate (102).

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