Large-tonnage rescue vehicle corbel device

Abstract

The invention provides a large-tonnage rescue vehicle corbel device. The large-tonnage rescue vehicle corbel device comprises a base, an auxiliary arm, an adjusting connecting assembly and a trail hoe assembly. The base is connected with a vehicle body of the rescue vehicle. And a dragging and rescuing winch is arranged on the base. The number of the auxiliary arms is two, and the two auxiliary arms are arranged on the two sides of the base in the width direction of the base correspondingly. The adjusting connecting assembly is arranged on the base and provided with two connecting parts capable of moving in the direction of the rescued vehicle, and the two connecting parts are arranged in the length direction of the base in a spaced mode. The two ends of each connecting part extend out of the base in the width direction of the base and are connected with the two auxiliary arms. The spat assembly can abut against the side wall of a groove formed in the ground after being unfolded. The supporting arm device of the large-tonnage rescue vehicle can adapt to transverse compression of soil, meanwhile, it can be guaranteed that the trail hoe assembly works stably, the rescue vehicle body is prevented from sliding, safety is improved, and practicability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of rescue vehicles, and particularly relates to a boom device for a large-tonnage rescue vehicle. Background Art

[0002] Rescue vehicles are usually used for rescue, mainly to tow out faulty or grounded vehicles.

[0003] In the prior art, a deployable boom device for towing is usually provided at the rear of a rescue vehicle. After the boom device is deployed, a hoe assembly can be formed that is inclined downward and can abut against the side wall of a groove opened on the ground. The setting of the hoe assembly can enhance stability and can adapt to large-tonnage vehicles to be rescued. However, during the operation of the winch and the process of towing the vehicle, the hoe assembly will laterally squeeze the side wall of the groove. When it comes to the soil being squeezed, it will inevitably be compressed due to the compressive stress of the hoe assembly. When the pulling force is large, it will cause the rescue vehicle to slip backward. When the rescue vehicle is working, it usually jacks up and supports the vehicle body through the outriggers on the vehicle body, so its wheels are in a suspended state, and its slipping may cause accidents. Summary of the Invention

[0004] An embodiment of the present invention provides a boom device for a large-tonnage rescue vehicle, aiming to solve the problem of poor practicability caused by the boom device adopted by the existing rescue vehicle being unable to adapt to the lateral compression of the soil.

[0005] To achieve the above object, the technical solution adopted by the present invention is: to provide a boom device for a large-tonnage rescue vehicle, including:

[0006] A base connected to the vehicle body of the rescue vehicle; a towing winch is provided on the base;

[0007] Two auxiliary arms are provided, and the two auxiliary arms are respectively arranged on both sides of the base along the width direction of the base; each auxiliary arm is arranged along the length direction of the base, and one end extends out of the base;

[0008] An adjustment connection assembly is arranged on the base and has two connection parts that can move towards the vehicle to be rescued. The two connection parts are spaced along the length direction of the base; both ends of each connection part extend out of the base along the width direction of the base and are connected to the two auxiliary arms;

[0009] A hoe assembly is connected to the extended ends of the two auxiliary arms and is adaptively connected to the towing rope led out by the towing winch. The hoe assembly is used to abut against the side wall of the groove opened on the ground after being deployed.

[0010] In a possible implementation manner, flanges are provided at both the top and bottom ends of the auxiliary arm.

[0011] In a possible implementation, the hoe assembly includes:

[0012] A first adapter base rotatably arranged at the extended ends of the two auxiliary arms, and the rotation axis is arranged along the width direction of the base;

[0013] A fixed arm arranged on the first adapter base;

[0014] There are two first telescopic structures, and the two first telescopic structures respectively correspond to the two auxiliary arms one by one; one end of each first telescopic structure is connected to the auxiliary arm, and the other end is connected to the fixed arm, and is used to drive the combined body of the fixed arm and the first adapter base to pitch and rotate;

[0015] A second adapter base rotatably arranged at one end of the fixed arm close to the first adapter base, and the rotation axis is arranged along the width direction of the base;

[0016] A hoe arm, one end of which is fixedly connected to the second adapter base, and the other end extends out, and a hoe shovel that can contact the side wall of the groove is fixedly arranged at the extended end of the hoe arm;

[0017] A second telescopic structure, one end of which is rotatably connected to the fixed arm, and the other end is connected to the hoe arm, and is used to drive the combined body of the hoe arm and the second adapter base to pitch and rotate.

[0018] In a possible implementation, a fixed pulley through which the towing winch towing rope passes is arranged at the end of the fixed arm far from the first adapter base.

[0019] In a possible implementation, both the first telescopic structure and the second telescopic structure are hydraulic cylinders.

[0020] In a possible implementation, the adjustment connection assembly includes:

[0021] There are two large rotating shafts, and both of the two large rotating shafts are rotatably arranged on the base, and the rotation and wire routing are arranged along the width direction of the base, and the two large rotating shafts are arranged at intervals along the length direction of the base; a through hole penetrating both ends is arranged in each large rotating shaft, and the through hole extends along the horizontal direction in the large rotating shaft;

[0022] There are two sliding columns, and the two sliding columns respectively correspond to the two large rotating shafts one by one; each sliding column is limited and slidably arranged in the corresponding through hole; connecting shafts extending out of the through hole are respectively fixed at both ends of each sliding column, and the connecting shaft is the connecting part;

[0023] There are two sets of elastic members, and the two sets of elastic members respectively correspond to the two large rotating shafts one by one; each elastic member includes a plurality of springs, and the springs are arranged at intervals along the width direction of the base. One end of each spring abuts against the sliding column, and the other end abuts against one end of the through port close to the vehicle to be rescued.

[0024] In a possible implementation manner, the cross-section of the through port is rectangular;

[0025] Among them, the cross-section of the sliding column is a square adapted to the through port.

[0026] In a possible implementation manner, the connecting shaft is rotatably connected to the auxiliary arm.

[0027] In a possible implementation manner, the adjustment connection assembly further includes an adjustment structure. There are at least two adjustment structures, and the adjustment structures are arranged at intervals along the width direction of the base; each adjustment structure includes:

[0028] Two gear rings are sleeved on the two large rotating shafts respectively; an external tooth surface is provided on the outer edge of each gear ring;

[0029] A rack is slidably arranged on the base along the length direction of the base and meshes with the external tooth surfaces at the bottom ends of the gear rings;

[0030] A third telescopic structure is fixedly arranged on the base and is connected to one end of the rack to drive the rack to slide.

[0031] In this implementation manner, the adjustment connection assembly arranged on the base connects the two auxiliary arms through two horizontally movable connecting parts, which can ensure the connection strength with the two auxiliary arms. At the same time, when the hoe assembly is deployed and working, the hoe assembly is subjected to a pulling force, which involves soil compression. The combination of the auxiliary arm and the hoe assembly can slide horizontally relative to the base, thereby adapting to the lateral compression of the soil, and at the same time can ensure the stable operation of the hoe assembly, and avoid the rescue vehicle body from slipping, improving safety and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the boom device of a large-tonnage rescue vehicle provided by an embodiment of the present invention;

[0033] Figure 2 It is a schematic top view structural diagram of the boom device of a large-tonnage rescue vehicle provided by an embodiment of the present invention;

[0034] Figure 3 It is Figure 2 A schematic cross-sectional view taken along the A-A direction of the boom device of a large-tonnage rescue vehicle provided by an embodiment;

[0035] Description of reference numerals:

[0036] 10. Base; 11. Towing winch; 12. Towing rope;

[0037] 20. Auxiliary arm; 21. Flanging;

[0038] 30. Adjusting connecting assembly; 31. Large rotating shaft; 311. Through-hole; 32. Sliding column; 33. Spring; 34. Adjusting structure; 341. Gear ring; 342. Rack; 343. Third telescopic structure; 35. Connecting shaft;

[0039] 40. hoe stop assembly; 41. first adapter; 42. fixed arm; 43. first telescopic structure; 44. second adapter; 45. hoe stop arm; 46. second telescopic structure; 47. hoe stop shovel; 48. fixed pulley;

[0040] 50. Rescue vehicle. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] Please also read Figure 1 and Figure 2 , the arm-supporting device for a large-tonnage rescue vehicle provided by the present invention is now described. The arm-supporting device for a large-tonnage rescue vehicle comprises a base 10, an auxiliary arm 20, an adjustment connection assembly 30 and a stop hoe assembly 40. The base 10 is connected to the body of a rescue vehicle 50. A towing winch 11 is provided on the base 10. Two auxiliary arms 20 are provided, and the two auxiliary arms 20 are respectively arranged on both sides of the base 10 along the width direction of the base 10. Each auxiliary arm 20 is arranged along the length direction of the base 10, and one end extends out of the base 10. The adjustment connection assembly 30 is arranged on the base 10, and has two connecting parts that can be moved toward the direction of the rescued vehicle, and the two connecting parts are arranged at intervals along the length direction of the base 10. The two ends of each connecting part respectively extend out of the base 10 along the width direction of the base 10, and are connected to the two auxiliary arms 20. The hoe stopping assembly 40 is connected to the extended ends of the two auxiliary arms 20 and is adaptively connected to the traction rope 12 derived from the towing winch 11. The hoe stopping assembly 40 can be unfolded and abut against the side wall of the groove opened on the ground.

[0043] Compared with the prior art, the boom device of the large-tonnage rescue vehicle provided in this embodiment has an adjustment connection assembly 30 provided on the base 10 for connecting two auxiliary arms 20 through two horizontally movable connection parts, which can ensure the connection strength with the two auxiliary arms 20. At the same time, during the deployment and operation of the hoe assembly 40, the hoe assembly 40 is subjected to a tensile force, which involves soil compression. The combination of the auxiliary arm 20 and the hoe assembly 40 can slide horizontally relative to the base 10, thereby adapting to the lateral compression of the soil. At the same time, it can also ensure the stable operation of the hoe assembly 40, avoid the slippage of the rescue vehicle 50 body, improve safety, and has strong practicability.

[0044] For the sake of easy understanding, the bottom end of the base 10 can be connected to the vehicle body of the rescue vehicle 50 through a tractor saddle, which is prior art and will not be elaborated here. In addition, when the base 10 does not rotate relative to the vehicle body of the rescue vehicle 50, the length direction of the base 10 is the length direction of the tractor, and the width direction of the base 10 is the width direction of the tractor. Of course, after the base 10 rotates, the length direction and width direction of the base 10 can be referred to, and the top view shape of the base 10 can be rectangular.

[0045] In some embodiments, the above-mentioned auxiliary arm 20 can adopt, for example Figure 1 the structure shown. Refer to Figure 1 , both the top end and the bottom end of the auxiliary arm 20 have flanges 21. The auxiliary arm 20 can be a plate structure, and flanges 21 are provided on the side edges of the top end and the bottom end of the plate, which can improve its structural strength and thus ensure the stable support for the hoe assembly 40.

[0046] In some embodiments, the above-mentioned hoe assembly 40 can adopt, for example Figure 1 the structure shown. Refer to Figure 1, the hoe assembly 40 includes a first adapter 41, a fixed arm 42, a first telescopic structure 43, a second adapter 44, a hoe arm 45, and a second telescopic structure 46. The first adapter 41 is rotatably disposed at the extended ends of the two auxiliary arms 20, and the rotation axis is disposed along the width direction of the base 10. The fixed arm 42 is disposed on the first adapter 41. There are two first telescopic structures 43, and the two first telescopic structures 43 respectively correspond to the two auxiliary arms 20 one by one. One end of each first telescopic structure 43 is connected to the auxiliary arm 20, and the other end is connected to the fixed arm 42, and can drive the combination of the fixed arm 42 and the first adapter 41 to pitch and rotate. The second adapter 44 is rotatably disposed at one end of the fixed arm 42 close to the first adapter 41, and the rotation axis is disposed along the width direction of the base 10. One end of the hoe arm 45 is fixedly connected to the second adapter 44, and the other end extends. A hoe shovel 47 that can contact the side wall of the groove is fixedly provided at the extended end of the hoe arm 45. One end of the second telescopic structure 46 is rotatably connected to the fixed arm 42, and the other end is connected to the hoe arm 45, and can drive the combination of the hoe arm 45 and the second adapter 44 to pitch and rotate.

[0047] Supported by the two connecting parts, the auxiliary arm 20 will be kept in the same direction as the base 10. Usually, both the base 10 and the auxiliary arm 20 are horizontally arranged. The hoe assembly 40 has a folded state and an unfolded state. In the folded state, both the first telescopic structure 43 and the second telescopic structure 46 are in a contracted state. At this time, the fixed arm 42 and the hoe arm 45 will be located above the base 10 and parallel to the base 10. When in the unfolded state, the first telescopic structure 43 will drive the fixed arm 42 to pitch and turn upward to a vertical setting, and the second telescopic structure 46 will drive the hoe arm 45 to pitch and turn downward relative to the fixed arm 42 to an inclined setting obliquely downward. The hoe shovel 47 at the end of the hoe arm 45 will extend into the groove and abut against the inner wall of the groove.

[0048] The hoe assembly 40 can ensure that the lateral tension is transmitted to the ground and ensure adaptation to large-tonnage rescued vehicles.

[0049] In some embodiments, the above-mentioned fixed arm 42 can adopt the structure as Figure 1 shown. Refer to Figure 1 , a fixed pulley 48 for the towing cable 12 of the towing winch 11 to pass through is provided at the end of the fixed arm 42 far from the first adapter 41.

[0050] The fixed pulley 48 can ensure that the towing cable 12 is wound around. The towing cable 12 led out by the towing winch 11 can pass through the fixed pulley 48, and then be connected to the hoe arm 45 after passing through the hook component on the rescued vehicle. At this time, the guide pulley on the hook can be used as a movable pulley, which can reduce the tension of the towing cable 12. At the same time, this structure can balance the force of the hoe assembly 40. This technology is prior art and will not be elaborated here.

[0051] In some embodiments, the above-mentioned first telescopic structure 43 and second telescopic structure 46 may adopt the structure as shown in Figure 1 . Refer to Figure 1 . Both the first telescopic structure 43 and the second telescopic structure 46 are hydraulic cylinders. The hydraulic cylinders have a large top thrust, which can ensure the stability of the fixed arm 42 and the hoe arm 45, and thus adapt to the rescued vehicles with large tonnages.

[0052] In some embodiments, the above-mentioned adjustment connection assembly 30 may adopt the structure as shown in Figure 2 and Figure 3 . Refer to Figure 2 and Figure 3 . The adjustment connection assembly 30 includes a large rotating shaft 31, a sliding column 32 and an elastic member. There are two large rotating shafts 31. Both of the two large rotating shafts 31 are rotatably arranged on the base 10, and the rotation and wire routing are arranged along the width direction of the base 10. The two large rotating shafts 31 are arranged at intervals along the length direction of the base 10. Each large rotating shaft 31 is provided with a through hole 311 penetrating through both ends. The through hole 311 extends along the horizontal direction in the large rotating shaft 31. There are two sliding columns 32. The two sliding columns 32 respectively correspond to the two large rotating shafts 31 one by one. Each sliding column 32 is limited and slidably arranged in the corresponding through hole 311. Connecting shafts 35 extending out of the through hole 311 are fixed at both ends of each sliding column 32. The connecting shafts 35 are connecting parts. There are two groups of elastic members. The two groups of elastic members respectively correspond to the two large rotating shafts 31 one by one. Each elastic member includes a plurality of springs 33. The springs 33 are arranged at intervals along the width direction of the base 10. One end of each spring 33 abuts against the sliding column 32, and the other end abuts against one end of the through hole 311 close to the rescued vehicle.

[0053] The two large rotating shafts 31 are rotatably connected to the base 10. At the same time, each large rotating shaft 31 provides a through hole 311. The sliding column 32 can slide in the through hole 311. At the same time, under the elastic movement of each spring 33, it will keep contacting with one end of the through hole 311 far from the rescued vehicle continuously. When the combined body of the hoe assembly 40 and the auxiliary arm 20 is subjected to a tensile force and the soil is compressed, the combined body of the hoe assembly and the auxiliary arm 20 will drive the sliding column 32 to move and compress each spring 33. This kind of structure can ensure adaptation to the displacement change generated by the compression of the soil, thus avoiding the movement of the body of the rescue vehicle 50 and improving safety. At the same time, it can adapt to the rescued vehicles with large tonnages.

[0054] When the rescued vehicle may be below the slope, at this time, the hoe assembly 40 may deviate from the horizontal direction under the tensile force from the rescued vehicle. The rotational connection of the large rotating shaft 31 can ensure the adjustment of the extension direction of the through hole 311, that is, the adjustment of the sliding direction of each sliding column 32, so as to adapt to the position of the rescued vehicle, and the adaptability is strong.

[0055] In some embodiments, the above-mentioned through hole 311 may adopt the structure as Figure 3 shown. Refer to Figure 3 . The cross-section of the through hole 311 is rectangular, and the cross-section of the sliding column 32 is square and adapted to the through hole 311. The long rectangular opening can ensure that the sliding column 32 has a certain displacement amount, and further ensure the adaptation of the combination of the hoe assembly and the auxiliary arm 20 to the compression of the soil.

[0056] Regarding the connection between the sliding column 32 and the connecting shaft 35, two sliding columns 32 can be directly welded to both ends of the sliding shaft, or a shaft hole can be opened in the sliding column 32 for the connecting shaft 35 to be rotatably connected.

[0057] In some embodiments, the above-mentioned connecting shaft 35 may adopt the structure as Figure 1 shown. Refer to Figure 1 . The connecting shaft 35 is rotatably connected to the auxiliary arm 20 to ensure the limited displacement of the auxiliary arm 20.

[0058] In some embodiments, the above-mentioned adjusting connection assembly 30 may adopt the structure as Figure 2 and Figure 3 shown. Refer to Figure 2 and Figure 3 . The adjusting connection assembly 30 further includes an adjusting structure 34. There are at least two adjusting structures 34, and the adjusting structures 34 are arranged at intervals along the width direction of the base 10. Each adjusting structure 34 includes a gear ring 341, a rack 342 and a third telescopic structure 343. There are two gear rings 341, and the two gear rings 341 are respectively sleeved on two large rotating shafts 31 in a ring shape. The outer edge of each gear ring 341 is provided with an external tooth surface. The rack 342 is slidably arranged on the base 10 along the length direction of the base 10 and meshes with the external tooth surfaces at the bottom ends of the gear rings 341. The third telescopic structure 343 is fixed on the base 10 and is connected to one end of the rack 342 to drive the rack 342 to slide.

[0059] The adjusting structure 34 drives the rack 342 to move through the third telescopic structure 343, and then drives the two large rotating shafts 31 to rotate synchronously through the two gear rings 341, which can ensure the adjustment of the extension angle of the through hole 311, that is, the adjustment of the sliding direction of the sliding column 32, and ensure their synchronism to ensure the adaptation to the rescued vehicles with different high and low positions and improve the adaptability.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-tonnage rescue vehicle support arm device, characterized in that: include: A base is connected to the body of the rescue vehicle; a towing winch is provided on the base; There are two auxiliary arms, and the two auxiliary arms are respectively arranged on both sides of the base along the width direction of the base; each auxiliary arm is arranged along the length direction of the base, and one end extends out of the base; An adjustable connection assembly is arranged on the base, and has two connection parts that can move toward the rescued vehicle, and the two connection parts are arranged at intervals along the length direction of the base; two ends of each connection part extend out of the base along the width direction of the base, and are connected to the two auxiliary arms; The hoe-stopping assembly is connected to the extended ends of the two auxiliary arms and is adaptively connected to the traction rope derived from the towing and rescue winch. The hoe-stopping assembly is used to abut against the side wall of the groove opened on the ground after being unfolded.

2. The large-tonnage rescue vehicle support arm device according to claim 1, characterized in that: The top end and the bottom end of the auxiliary arm are both provided with flanges.

3. The large-tonnage rescue vehicle support arm device according to claim 1, characterized in that: The hoe stopping assembly comprises: A first adapter seat is rotatably arranged at the extended ends of the two auxiliary arms, and a rotation axis is arranged along the width direction of the base; A fixed arm, arranged on the first adapter; There are two first telescopic structures, and the two first telescopic structures correspond to the two auxiliary arms respectively; one end of each first telescopic structure is connected to the auxiliary arm, and the other end is connected to the fixed arm, so as to drive the combination of the fixed arm and the first adapter to pitch and rotate; A second adapter seat is rotatably disposed at one end of the fixed arm close to the first adapter seat, and a rotation axis is disposed along the width direction of the base; A hoe stopping arm, one end of which is fixedly connected to the second adapter seat and the other end of which is extended, wherein the extended end of the hoe stopping arm is fixedly provided with a hoe stopping shovel capable of contacting the side wall of the groove; The second telescopic structure has one end connected to the fixed arm for rotation, and the other end connected to the hoe stopping arm, and is used for driving the combination of the hoe stopping arm and the second adapter to rotate in pitch.

4. The large-tonnage rescue vehicle support arm device according to claim 3, characterized in that: The end of the fixed arm away from the first adapter seat is provided with a fixed pulley for the traction rope of the towing winch to pass through.

5. The large-tonnage rescue vehicle support arm device according to claim 4, characterized in that: The first telescopic structure and the second telescopic structure are both hydraulic cylinders.

6. The large-tonnage rescue vehicle support arm device according to claim 1, characterized in that: The adjusting connection component comprises: There are two large rotating shafts, both of which are rotatably arranged on the base, and the rotation and routing are arranged along the width direction of the base, and the two large rotating shafts are arranged at intervals along the length direction of the base; each of the large rotating shafts is provided with a through hole passing through both ends, and the through hole extends in the large rotating shaft along the horizontal direction; There are two sliding posts, and the two sliding posts correspond to the two large rotating shafts one by one respectively; each sliding post is limitedly slidably arranged in the corresponding through-hole; both ends of each sliding post are respectively fixed with a connecting shaft extending through the through-hole, and the connecting shaft is the connecting part; There are two groups of elastic members, and the two groups of elastic members correspond to the two large rotating shafts respectively; each of the elastic members includes a plurality of springs, and the springs are arranged at intervals along the width direction of the base, and one end of each spring abuts against the sliding column, and the other end abuts against one end of the through-port close to the rescued vehicle.

7. The large-tonnage rescue vehicle support arm device according to claim 6, characterized in that: The cross section of the through opening is rectangular; Wherein, the cross section of the sliding column is a square that matches the through opening.

8. The large-tonnage rescue vehicle support arm device according to claim 6, characterized in that: The connecting shaft is rotatably connected to the auxiliary arm.

9. The large-tonnage rescue vehicle support arm device according to claim 6, characterized in that: The adjusting connection assembly further includes an adjusting structure, at least two of which are provided, and each of the adjusting structures is arranged at intervals along the width direction of the base; each of the adjusting structures includes: There are two gear rings, which are respectively annularly sleeved on the two large rotating shafts; the outer edge of each gear ring is provided with an external tooth surface; A rack, slidably disposed on the base along the length direction of the base and meshing with the outer tooth surface at the bottom end of each gear ring; The third telescopic structure is fixed on the base and connected to one end of the rack to drive the rack to slide.

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