Swing mechanism for guardrail breakdown van

Abstract

The utility model discloses a slewing mechanism for a guardrail breakdown van, which belongs to the technical field of guardrail breakdown van, and comprises a slewing upper bracket, a slewing lower bracket, a slewing bearing piece and an instrument control box, the rotary lower bracket is fixedly connected with a chassis of the guardrail breakdown van; and the instrument control box is fixed on the rotary upper bracket through a connecting arm. The rotary upper support and the rotary lower support are fixedly connected with the pile driving and pulling assembly and the guardrail breakdown van chassis frame respectively, and then the rotary supporting piece is arranged between the rotary upper support and the rotary lower support, so that rotary connection between the pile driving and pulling assembly and the guardrail breakdown van is achieved. The instrument control box is fixed to the rotary upper support through the connecting arm, so that the instrument control box can rotate along with the pile driving and pulling assembly and is located on the right side of the guardrail breakdown van in the working state, and workers can conveniently check the working position of the pile driving and pulling assembly in a close range and operate the instrument control box.

Description

Technical Field

[0001] This utility model relates to the technical field of guardrail repair vehicles, specifically to a rotary mechanism for guardrail repair vehicles. Background Technology

[0002] With the rapid development of highway transportation, guardrails, as an important facility to ensure driving safety, directly affect road traffic capacity due to their repair efficiency. Currently, guardrail repair vehicles are generally equipped with pile driving and extraction devices to quickly replace damaged guardrail posts. Since the vehicle is positioned to the left of the damaged guardrail when it approaches the guardrail, a rotating mechanism is needed to switch the pile driving and extraction device from its retracted state to its working state, ensuring the device faces the guardrail. The instrument control box of the pile driving and extraction device is often fixed to the vehicle body. To avoid interference with the device, it is usually located near the front of the vehicle, resulting in a significant distance between the control box and the hammer head of the pile driving and extraction assembly, making it inconvenient for operators to simultaneously monitor the hammer head's position while operating the device. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a rotary mechanism for a guardrail repair vehicle, which can stably drive the pile driving and pulling components to rotate on the guardrail repair vehicle and facilitate operation using the instrument control box.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a rotary mechanism for a guardrail repair vehicle, comprising:

[0005] A rotating upper support, used to install pile driving and extraction components;

[0006] A slewing lower support is fixedly connected to the chassis of the guardrail repair vehicle;

[0007] A slewing bearing, comprising an outer ring fixedly connected to an upper slewing support and an inner ring fixedly connected to a lower slewing support, wherein the outer ring and the inner ring are rotatably connected.

[0008] The instrument control box is used to control the operation of the pile driving and pulling assembly. The instrument control box is fixed to the slewing upper support via a connecting arm.

[0009] Preferably, an outer shell is fixed on the inner ring, a motor is fixedly mounted on the outer shell, a gear ring is fixed on the outer ring, and a gear that meshes with the gear ring is fixed at the output end of the motor.

[0010] Preferably, the motor is a hydraulic drive motor with a brake.

[0011] Preferably, the output shaft of the motor is connected to a reduction mechanism, and the gear is fixed on the output shaft of the reduction mechanism.

[0012] Preferably, the upper surface of the rotating upper support is welded with a plurality of ear plates for connecting the pile driving and pulling components, and the ear plates are provided with through holes for inserting pins.

[0013] Preferably, the operating surface of the instrument control box is oriented parallel to the axial direction of the through hole.

[0014] Preferably, the vertical projection of the instrument control box is located outside the vertical projection of the rotating upper support.

[0015] Preferably, the rotating upper support includes an upper plate and a lower plate, and bolt holes that mate with the outer ring are provided on the upper plate and the lower plate. The upper plate, the lower plate and the outer ring are fixedly connected by bolts.

[0016] Preferably, one end of the connecting arm is fixed to the rotating upper bracket by bolts, and the other end is welded with a connecting plate, and the instrument control box is fixed on the connecting plate.

[0017] Preferably, the chassis is fixed with the frame of the guardrail repair vehicle, and the slewing lower support is fixed to the chassis and the frame by U-bolts.

[0018] The beneficial effects of this utility model are as follows:

[0019] The present invention features an upper and lower slewing bracket, which are fixedly connected to the pile driving and extraction assembly and the chassis frame of the guardrail repair vehicle, respectively. A slewing support is then installed between the upper and lower slewing brackets, enabling the pile driving and extraction assembly to rotate on the guardrail repair vehicle. This allows the pile driving and extraction assembly to rotate on the vehicle, switching between a stowed and working state. A hydraulic motor drives the outer ring of the slewing support to rotate, providing high output torque and strong overload capacity. A brake locks the rotation position to prevent accidental deviation during operation. The instrument control box is fixed to the upper slewing bracket via a connecting arm, allowing it to rotate with the pile driving and extraction assembly. In the working state, the control box is positioned on the right side of the guardrail repair vehicle, facilitating close-up viewing of the pile driving and extraction assembly's working position and operation of the control box by the operator. Attached Figure Description

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

[0021] Figure 1 This is a top-view perspective view of a rotating mechanism for a guardrail repair vehicle, provided as an embodiment of the present utility model.

[0022] Figure 2 This is a top view of a rotating mechanism for a guardrail repair vehicle provided in an embodiment of the present utility model.

[0023] Figure 3 A side view of a rotating mechanism for a guardrail repair vehicle provided in an embodiment of this utility model.

[0024] Figure 4 A perspective view from below of a rotating mechanism for a guardrail repair vehicle provided in an embodiment of this utility model.

[0025] Figure 5 This is a schematic diagram of a rotating mechanism for a guardrail repair vehicle in a stowed state, as provided in an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of a rotating mechanism for a guardrail repair vehicle in operation, as provided in an embodiment of the present invention.

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

[0028] 1. Upper slewing bracket, 2. Lower slewing bracket, 3. Slewing bearing component, 4. Outer ring, 5. Inner ring, 6. Instrument control box, 7. Connecting arm, 8. Housing, 9. Motor, 10. Ear plate, 11. Through hole, 12. Upper plate, 13. Lower plate, 14. Frame. Detailed Implementation

[0029] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figures 1 to 6As shown, Embodiment 1 of this utility model provides a rotary mechanism for a guardrail repair vehicle, used to drive the rotation of the pile driving and pulling assembly on the guardrail repair vehicle. It includes an upper rotary support 1, a lower rotary support 2, a rotary support 3, and an instrument control box 6. The upper rotary support 1 has multiple ear plates 10 welded on it for mounting the pile driving and pulling assembly. Each ear plate 10 has a through hole 11 for mounting a pin. The pile driving and pulling assembly is mounted on the ear plate 10 via a pin. The upper rotary support 1 includes an upper plate 12 and a lower plate 13. The upper plate 12 and lower plate 13 have essentially the same shape, each with a round hole in the center and a polygonal edge. Multiple bolt holes are provided around the round hole. The upper plate 12 and lower plate 13 are fixedly connected by bolts passing through the bolt holes. The bolts extend to bolt holes on the outer ring 4 of the rotary support 3, thus firmly fixing the upper plate 12, lower plate 13, and outer ring 4 with bolts. The superposition of the upper plate 12 and the lower plate 13 greatly increases the structural strength of the rotating upper support 1, which can increase the load-bearing capacity and provide stable support for the pile driving and extraction components.

[0032] The slewing lower support 2 is fixed to the guardrail repair vehicle by multiple U-bolts that fasten to the chassis and frame 14. Gaskets can be filled between the U-bolts and the chassis and frame 14 to reduce gaps, making the fixation more secure and improving vibration resistance. The inner ring 5 of the slewing bearing 3 is fixedly connected to the slewing lower support 2, and the outer ring 4 is rotatably connected to the inner ring 5 via ball bearings or double-row tapered roller bearings, allowing the slewing upper support 1 to rotate on the slewing lower support 2. This allows the pile driving and pulling assembly to rotate on the frame 14 of the guardrail repair vehicle, switching between storage and working states.

[0033] To facilitate operation, the instrument control box 6 is fixed to the surface of the upper plate 12 of the rotary upper bracket 1 via a connecting arm 7. One end of the connecting arm 7 is fixedly connected to the upper plate 12 with bolts, and the other end is welded with a rectangular connecting plate. The instrument control box 6 is fixed to the connecting plate with bolts. Figure 2 and Figure 3 As shown, the operating surface of the instrument control box 6, which is used by the operator, is parallel to the pin insertion direction of the pile driving and pulling assembly. Thus, when the pile driving and pulling assembly rotates to the working state, that is, when the axis of the pin points to the right side of the guardrail repair vehicle, the operating surface of the instrument control box 6 also faces the right side of the guardrail repair vehicle. Furthermore, since the vertical projection of the instrument control box 6 is located outside the upper rotating support 1 and is far from the axis of the rotating support, the operating surface of the instrument control box 6 will rotate to be close to the right edge of the guardrail repair vehicle. This allows the operator to observe the working status of the pile driving and pulling assembly at close range and operate the instrument control box 6 to control the various motion mechanisms of the pile driving and pulling assembly, improving the convenience and accuracy of operation.

[0034] Example 2:

[0035] Based on Embodiment 1, in Embodiment 2, the slewing bearing 3 has a housing 8 fixed to the inner ring 5, which covers the outer sides of the inner ring 5 and the outer ring 4. A hydraulic drive motor 9 with a brake is fixedly mounted on the housing 8. The output shaft of the hydraulic drive motor 9 is connected to a gear reduction mechanism, and a gear is mounted on the end output shaft of the gear reduction mechanism. Simultaneously, a gear ring is fixed to the outer circumference of the outer ring 4, and the gear meshes with the gear ring. Thus, power is provided by the hydraulic drive motor 9, and the torque is amplified by the gear reduction mechanism to drive the outer ring 4 to rotate, ensuring stable rotation of the pile driving and pulling assembly under heavy load conditions. The brake automatically locks the gear when the hydraulic system of the hydraulic drive motor 9 loses pressure, preventing accidental rotation of the upper slewing support 1.

[0036] Example 3:

[0037] Based on Embodiment 1 and Embodiment 2, in order to further enhance structural stability, this utility model adds multiple ribs between the slewing lower support 2 and the guardrail repair vehicle frame 14. The ribs are welded to both sides of the U-bolt mounting position of the slewing lower support 2 to improve the torsional resistance of the slewing lower support 2.

[0038] The end of the connecting arm 7 near the instrument control box 6 adopts a telescopic sleeve structure, with a locking bolt inside the sleeve, allowing the height of the instrument control box 6 to be adjusted according to the operator's height. Rubber pads are installed at the connection point between the connecting arm 7 and the upper rotating support 1 to reduce the impact of operational vibrations on the instruments.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A rotary mechanism for a guardrail repair vehicle, characterized in that, include: A rotating upper support, used to install pile driving and extraction components; A slewing lower support is fixedly connected to the chassis of the guardrail repair vehicle; A slewing bearing, comprising an outer ring fixedly connected to an upper slewing support and an inner ring fixedly connected to a lower slewing support, wherein the outer ring and the inner ring are rotatably connected. The instrument control box is used to control the operation of the pile driving and pulling assembly. The instrument control box is fixed to the slewing upper support via a connecting arm.

2. The rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, An outer shell is fixed to the inner ring, a motor is fixedly mounted on the outer shell, a gear ring is fixed to the outer ring, and a gear that meshes with the gear ring is fixed to the output end of the motor.

3. The rotary mechanism for a guardrail repair vehicle as described in claim 2, characterized in that, The motor is a hydraulic drive motor with a brake.

4. The rotary mechanism for a guardrail repair vehicle as described in claim 2, characterized in that, The output shaft of the motor is connected to a reduction mechanism, and the gear is fixed on the output shaft of the reduction mechanism.

5. The rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, The upper surface of the rotating upper support is welded with multiple ear plates for connecting the pile driving and pulling components, and the ear plates are provided with through holes for inserting pins.

6. The rotary mechanism for a guardrail repair vehicle as described in claim 5, characterized in that, The operating surface of the instrument control box is parallel to the axis of the through hole.

7. The rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, The vertical projection of the instrument control box is located outside the vertical projection of the rotating upper support.

8. The rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, The rotating upper support includes an upper plate and a lower plate, and bolt holes that mate with the outer ring are provided on the upper plate and the lower plate. The upper plate, the lower plate and the outer ring are fixedly connected by bolts.

9. A rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, One end of the connecting arm is fixed to the rotating upper bracket by bolts, and the other end is welded with a connecting plate. The instrument control box is fixed on the connecting plate.

10. A rotary mechanism for a guardrail repair vehicle as described in claim 1, characterized in that, The chassis is fixed with the frame of the guardrail repair vehicle, and the slewing lower support is fixed to the chassis and the frame with U-bolts.

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