Safety card device for vertical support leg and vertical support leg

Abstract

The present invention belongs to the field of vertical legs that play a supporting role, and specifically relates to a safety card device for vertical legs, the safety card device includes a U-shaped safety card structure, the U-shaped bottom of the safety card structure is provided with a U-shaped groove, the safety card structure is provided with hinge holes on the two side plates at the open end of the U-shaped groove, and the support end of the safety card structure away from the hinge hole is provided with a U-shaped support plate, and the outer support surface of the support plate is not lower than the end surface of the support end of the safety card structure. After the vertical leg is installed with the safety card device, when the vertical leg plays a supporting role, the safety card device is erected and placed under the fixed leg. Once the oil cylinder leaks oil or unloads internally between the movable leg and the fixed leg, resulting in the vertical leg being soft, the fixed leg and the safety card device are stuck, which can prevent the fixed leg from continuing to fall, and avoid the center of gravity of the mechanical equipment from shifting and tipping sideways.

Description

Technical Field

[0001] The invention belongs to the field of vertical legs playing a supporting role, and in particular relates to a safety card device for the vertical legs and the vertical legs. Background Art

[0002] With the continuous development of urban construction and the construction machinery industry, various types of infrastructure projects and large-scale construction projects have emerged in an endless stream, making construction machinery equipment particularly important. Construction machinery equipment generally consists of two parts: the vehicle onboard and the vehicle offboard. The vehicle offboard part generally consists of the chassis, subframe, outriggers, etc. Before the vehicle onboard, the vehicle offboard generally needs to be in place first, such as truck cranes, truck-mounted cranes, aerial work vehicles, etc. After the outriggers are in place, the whole vehicle will be propped up and the whole vehicle will be airborne. Some engineering vehicles are like bridge inspection vehicles. Although the outriggers do not prop up the whole vehicle, when the upper body is working, the center of gravity shifts. In order to prevent the vehicle from tilting, the outriggers are needed to support the overall balance of the vehicle.

[0003] At present, most engineering machinery equipment needs outriggers to maintain the stability and safety of the entire device. Outriggers are generally hydraulic outriggers supported by hydraulic cylinders. Because the cylinders are subject to large forces and are related to the reliability of the equipment and the safety of personnel, high requirements are placed on the cylinders. However, in actual projects, it is difficult to avoid oil leakage and internal unloading of the cylinders, which seriously endangers the safety of equipment and personnel.

[0004] At present, most of the vertical outrigger mechanisms of engineering machinery equipment do not have mechanical limit devices, but are only equipped with "soft leg alarms". Once the leg slips and the leg becomes soft during operation, the whole machine is in a state of easy tipping, and the staff has no time to react, making it difficult to avoid accidents. Although some equipment is designed with locking pin-type mechanical limit devices, they are just for show. First, the use of locking pins is laborious and inconvenient to operate. Secondly, the design is unreasonable, the internal spring has low reliability and is prone to failure. Moreover, once the oil cylinder leaks, the locking pin-type mechanical limit is subjected to concentrated force, and the huge impact force will directly damage and deform the outrigger arm, and the locking pin will slip out of the hole of the movable leg, which cannot prevent the occurrence of soft leg phenomenon. The existing traditional locking pin-type mechanical limit has low reliability and poses a great safety hazard. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a safety card device for a vertical leg. After the vertical leg is installed with the safety card device, when the vertical leg plays a supporting role, the safety card device is erected and placed under the fixed leg. Once oil leakage or internal unloading occurs between the movable leg and the fixed leg, causing the vertical leg to become soft, the fixed leg and the safety card device are stuck, which can prevent the fixed leg from continuing to fall, thereby avoiding the center of gravity of the mechanical equipment from shifting and causing sideways tipping.

[0006] The present invention is achieved through the following technical scheme: a safety card device for a vertical leg, the safety card device includes a U-shaped safety card structure, the U-shaped bottom of the safety card structure is provided with a U-shaped groove, the safety card structure is provided with hinge holes on the two side plates at the open end of the U-shaped groove, and the support end of the safety card structure away from the hinge hole is provided with a U-shaped support plate, and the outer support surface of the support plate is not lower than the end surface of the support end of the safety card structure.

[0007] Furthermore, the support plate is arranged on the end surface of the support end of the safety card structure.

[0008] Furthermore, a safety card operating handle is provided on a side panel close to the supporting end of the safety card structure.

[0009] The present invention also provides a vertical support leg adopting the above-mentioned safety card device, which includes a fixed support leg and a movable support leg, the fixed support leg is provided with a cylinder hinge point I, and the movable support leg is provided with a cylinder hinge point II; the support leg cylinder is hinged on the cylinder hinge point I and the cylinder hinge point II, and the safety card device is hinged on the cylinder hinge point II through a hinge hole; the fixed support leg is provided with a safety card limit mechanism that can rotate up and down.

[0010] Furthermore, the free end of the movable leg is also hinged with a traveling wheel train; the lower end of the fixed leg is provided with a wheel train limiting plate, and the traveling wheel trains located on both sides of the movable leg are provided with wheel train limiting mechanisms; when the vertical leg is fully retracted, the two wheel train limiting mechanisms on the traveling wheel train contact the wheel train limiting plate.

[0011] Furthermore, a vehicle retraction limit slider is provided on the safety card structure of the safety card device; when the vertical support leg is fully retracted, the U-shaped bottom of the safety card device is supported on the running wheel system, and the upper part of the safety card device contacts the fixed support leg through the vehicle retraction limit slider.

[0012] Furthermore, the travel wheel system is hinged on the cylinder hinge point II.

[0013] Furthermore, a protective cover is provided on the upper portion of the fixed leg.

[0014] The beneficial effect of the present invention is that the safety card device is assembled between the fixed leg and the movable leg of the vertical support leg. When the vertical support leg is working, after the movable leg is extended to the right position, the safety card operating handle is operated to make the safety card device change from the retracted state to the vertical state, and supported between the fixed leg and the movable leg. Once the vertical support leg is soft due to oil leakage or internal unloading of the oil cylinder, the fixed leg and the safety card device are stuck, which can prevent the fixed leg from continuing to fall, avoid the center of gravity of the mechanical equipment from shifting, and avoid side tipping, resulting in casualties and property losses. The safety card device has a simple structure, low cost, high reliability, and small space occupied when retracting the vehicle. It can be widely used in engineering machinery and equipment such as bridge inspection vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the security card device of the present invention;

[0016] Figure 2 This is a schematic diagram of the vertical support leg of the present invention equipped with the safety card device when it plays a supporting role;

[0017] Figure 3 A schematic diagram of a vertical leg equipped with a safety card device according to the present invention;

[0018] Figure 4 It is a schematic diagram of the vertical legs of the present invention after being retracted;

[0019] In the figure, 1. safety card device, 101. safety card structure, 102. safety card operating handle, 103. vehicle retracting limit slider, 104. U-shaped groove, 105. hinge hole, 106. support plate, 2. safety card limit mechanism, 3. fixed support leg, 301. gear train limit plate, 4. protective cover, 5. movable support leg, 6. gear train limit mechanism, 7. walking gear train, 8. cylinder hinge point II, 9. cylinder hinge point I. DETAILED DESCRIPTION

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, a safety card device for a vertical leg, the safety card device 1 includes a U-shaped safety card structure 101, one of the U-shaped ends of the safety card structure 101 is a supporting end, and when the vertical leg plays a supporting role, the supporting end of the safety card structure 101 plays a role in supporting the fixed leg in the vertical leg. The safety card structure 101 is provided with a U-shaped groove 104 at the bottom of the U shape away from the supporting end, and the safety card structure 101 is provided with hinge holes 105 on both side panels of the open end of the U-shaped groove 104, and the hinge holes 105 are used to hinge the safety card device 1 to the vertical leg. Specifically, the support end of the safety card structure 101 away from the hinge hole 105 is provided with a U-shaped support plate 106, and the support plate 106 is used to support the fixed leg. In order to enable the support plate 106 to play a supporting role, the outer support surface of the support plate 106 is not lower than the end surface of the support end of the safety card structure 101. Preferably, as Figure 1 As shown, the support plate 106 is disposed on the end surface of the support end of the security card structure 101 .

[0022] Preferably, if Figure 2 and Figure 3 As shown, a safety card operating handle 102 is provided on a side plate close to the supporting end of the safety card structure 101. The safety card operating handle 102 is held by hand to operate the safety card device 1 to rotate around the hinge point.

[0023] like Figures 1 to 4 As shown, the present invention also provides a vertical leg using the above safety card device, the vertical leg includes a fixed leg 3 and a movable leg 5, the fixed leg 3 is provided with a cylinder hinge point I9, and the movable leg 5 is provided with a cylinder hinge point II8; the leg cylinder is hinged on the cylinder hinge point I9 and the cylinder hinge point II8, and the extension and retraction of the movable leg 5 are controlled by the extension and retraction of the leg cylinder. The safety card device 1 is hinged on the cylinder hinge point II8 through the hinge hole 105; the fixed leg 3 is provided with a safety card limit mechanism 2 that can rotate up and down.

[0024] When the vertical legs are working, after the movable legs 5 are extended into place, the safety card operating handle 102 of the safety card device 1 is operated to rotate the safety card device 1 from the retracted state to the vertical state, supported between the movable legs 5 and the fixed legs 3. Since the safety card device 1 is not in contact with the fixed legs 5, the safety card device 1 is in an unstable state at this time. To prevent the safety card device 1 from suddenly returning to the retracted state from the working state by gravity, after the safety card device 1 is rotated into place, the safety card limiting mechanism 2 needs to be lowered. The safety card limiting mechanism 2 can adopt any rotatable structural form. The safety card limiting mechanism 2 can effectively prevent the abnormal return of the safety card device 1. On the one hand, once the oil cylinder leaks or unloads internally, causing the vertical support leg to become soft, the fixed support leg 5 and the safety card device 1 are stuck, which can prevent the fixed support leg 5 from continuing to fall, thereby avoiding the center of gravity of the mechanical equipment from shifting, causing side tipping, and causing casualties and property losses; on the other hand, when the oil cylinder leaks or unloads internally, causing the vertical support leg to become soft, the fixed support leg 5 and the safety card device 1 are stuck, and the safety card device 1 is in a structural self-locking state. Even if the safety card limit mechanism 2 fails, the safety card device 1 will not return to its position, and the safety card device 1 will not fail.

[0025] When the vertical outriggers are retracted, the safety card limiting mechanism 2 is first rotated, and the safety card operating handle 102 is manipulated to rotate the safety card device 1 to the retracted position.

[0026] As a preferred embodiment of the present invention, the free end of the movable leg 5 is also hinged with a traveling wheel train 7, and the traveling wheel train 7 is hinged on the cylinder hinge point II8. On the one hand, the traveling wheel train 7 provides rigid support with the ground, and on the other hand, a power device can be installed on the traveling wheel train 7 to provide power for operation and walking. A wheel train limiting plate 301 is provided at the lower end of the fixed leg 3, and a wheel train limiting mechanism 6 is provided on the traveling wheel train 7 on both sides of the movable leg 5; when the vertical leg is fully retracted, the two wheel train limiting mechanisms 6 on the traveling wheel train 7 are in contact with the wheel train limiting plate 301. The wheel train limiting mechanism 6 can be a bolt. When the vehicle is in the retracted state, since the two wheel train limiting mechanisms 6 are in contact with the wheel train limiting plate 301 for limiting, the traveling wheel train 7 cannot rotate around the hinge point, thereby avoiding danger caused by the swing of the traveling wheel train 7 when the vehicle is traveling at high speed.

[0027] As a preferred embodiment of the present invention, a vehicle retracting limit slider 103 is provided on the safety card structure 101 of the safety card device 1; when the vertical legs are fully retracted, the U-shaped bottom of the safety card device 1 is supported on the running wheel train 7, and the upper part of the safety card device 1 contacts the end of the fixed leg 3 through the vehicle retracting limit slider 103. After the vehicle is retracted into place, the vehicle retracting limit slider 103 on the safety card device 1 is clamped at the end of the fixed leg 3, fixing the safety card device 1 between the running wheel train 7 and the fixed leg 3, so that the space occupied by the vehicle retracting is small, and the safety card device 1 will not shake and cause danger when the vehicle is traveling at high speed.

[0028] As a preferred embodiment of the present invention, a protective cover 4 is provided on the upper part of the fixed leg 3. The protective cover 4 protects the hydraulic lock, oil cylinder, etc. on the vertical leg from being affected by external factors, thereby reducing the probability of the soft leg phenomenon.

[0029] The safety card device of the present invention is assembled between the fixed leg and the movable leg of the vertical leg. The device has a simple structure, low cost, high reliability, and small space occupation when the vehicle is folded. It can effectively prevent the vertical leg from being soft due to oil leakage or internal unloading of the oil cylinder, and can prevent the fixed leg from continuing to fall, so as to avoid the center of gravity of the mechanical equipment from shifting and causing sideways tipping, resulting in casualties and property losses.

Claims

1. A vertical leg using a safety card device, characterized in that: The safety card device (1) comprises a U-shaped safety card structure (101), a U-shaped groove (104) being provided at the U-shaped bottom of the safety card structure (101), hinge holes (105) being provided on two side plates of the open end of the U-shaped groove (104) of the safety card structure (101), a U-shaped support plate (106) being provided at a support end of the safety card structure (101) away from the hinge hole (105), and an outer support surface of the support plate (106) being not lower than an end surface of the support end of the safety card structure (101); The vertical support leg comprises a fixed support leg (3) and a movable support leg (5); the fixed support leg (3) is provided with a cylinder hinge point I (9), and the movable support leg (5) is provided with a cylinder hinge point II (8); the support leg cylinder is hinged on the cylinder hinge point I (9) and the cylinder hinge point II (8); the safety card device (1) is hinged on the cylinder hinge point II (8) through a hinge hole (105); the fixed support leg (3) is provided with a safety card limit mechanism (2) capable of rotating up and down; The free end of the movable leg (5) is also hingedly connected to a running gear train (7); a gear train limiting plate (301) is provided at the lower end of the fixed leg (3); and a gear train limiting mechanism (6) is provided on the running gear train (7) located on both sides of the movable leg (5); when the vertical leg is fully retracted, the two gear train limiting mechanisms (6) on the running gear train (7) are in contact with the gear train limiting plate (301); A vehicle retraction limit slider (103) is provided on the safety card structure (101) of the safety card device (1); when the vertical legs are fully retracted, the U-shaped bottom of the safety card device (1) is supported on the running wheel train (7), and the upper part of the safety card device (1) contacts the fixed legs (3) via the vehicle retraction limit slider (103).

2. A vertical support leg using a safety card device according to claim 1, characterized in that: The support plate (106) is arranged on the end surface of the support end of the safety card structure (101).

3. A vertical support leg using a safety card device according to claim 1, characterized in that: A safety card operating handle (102) is provided on a side plate close to the supporting end of the safety card structure (101).

4. A vertical leg using a safety card device according to claim 1, characterized in that: The travel wheel train (7) is hinged on the cylinder hinge point II (8).

5. A vertical support leg using a safety card device according to claim 1, characterized in that: A protective cover (4) is provided on the upper part of the fixed leg (3).

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