Stabilizer assembly for a construction vehicle

Abstract

The utility model relates to vehicle technical field discloses a kind of support leg assembly and engineering vehicle, support leg assembly includes: support leg and support leg box, support leg is suitable for telescopic movement along first direction relative to support leg box;Support leg is equipped with assembly hole, and support leg box is equipped with support leg box mounting hole;Bolt is suitable for being simultaneously arranged in support leg box mounting hole and assembly hole, to limit support leg in storage state;Bolt includes bolt body and the bolt anti-loosening part formed by the extension of bolt body;Support leg box is further formed with the support leg box anti-loosening via hole being communicated with support leg box mounting hole, and bolt anti-loosening part is matched with support leg box anti-loosening via hole;Bolt has the first dismounting position of bolt anti-loosening part and support leg box anti-loosening via hole being opposite to correct to bolt into or remove support leg box mounting hole, and the first anti-loosening position of bolt anti-loosening part and support leg box anti-loosening via hole being staggered to limit bolt from support leg box mounting hole to come out.The support leg assembly provided by the utility model effectively prevents the risk of bolt loosening.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a support leg assembly and an engineering vehicle. Background Technology

[0002] Cranes are typically equipped with outriggers. By contacting the ground, the outriggers expand the support base, reducing the load on the tires and thus improving the crane's stability and lifting capacity. The outriggers are usually mounted on outrigger boxes on the crane. When the crane is stationary, the outriggers need to be extended to support the ground; when the crane is in motion, the outriggers need to be retracted to avoid interfering with the normal movement of the vehicle.

[0003] In related technologies, to prevent the outriggers from accidentally detaching when retracted, mounting holes are typically provided at corresponding positions on both the outrigger and the outrigger housing. A pin is then inserted through both holes to lock the outrigger to the housing, ensuring reliable fixation when the outrigger is retracted. However, in these technologies, the pin lacks an anti-loosening mechanism, frequently detaching or being lost, which can affect the normal operation of the equipment and poses a safety hazard. Utility Model Content

[0004] In view of this, the present invention provides a support leg assembly and an engineering vehicle to solve the problem of the pins easily coming loose or being lost.

[0005] In a first aspect, this utility model provides a support leg assembly, comprising: The support leg and the support leg box are adapted to extend and retract relative to the support leg box in a first direction to switch between an extended state and a retracted state; the support leg is provided with an assembly hole in a second direction, and the support leg box is provided with a support leg box mounting hole in a second direction. A pin is suitable for being inserted into both the outrigger housing mounting hole and the assembly hole to limit the outrigger in a retracted state; the pin includes a pin body and a pin anti-loosening portion extending from the pin body. The outrigger box also has an anti-loosening through hole that communicates with the outrigger box mounting hole, and the anti-loosening part of the pin is adapted to the anti-loosening through hole of the outrigger box. The pin has a first disassembly position in which the anti-loosening portion of the pin is aligned with the anti-loosening through hole of the outrigger box to insert or remove the pin from the outrigger box mounting hole, and a first anti-loosening position in which the anti-loosening portion of the pin is offset from the anti-loosening through hole of the outrigger box to restrict the pin from falling out of the outrigger box mounting hole. The first direction and the second direction are not parallel.

[0006] Beneficial effects: This application achieves locking and unlocking by forming a locking part on the pin and providing a matching locking hole on the outrigger box. The relative positional change between the locking part and the locking hole allows for quick installation and removal. When the locking part and the locking hole are aligned, the pin can be freely inserted or removed in a second direction, enabling rapid assembly and disassembly. After insertion, rotating the locking part to offset it from the locking hole locks it into the inner wall of the outrigger box, preventing it from disengaging in the second direction and effectively preventing the risk of loosening due to vibration during vehicle operation, thus improving operational safety. Furthermore, the matching structure between the locking part and the locking hole is simple and reliable, requiring no additional fasteners to achieve a self-locking function, significantly reducing maintenance costs.

[0007] In one alternative embodiment, the pin further includes a handle connected to one end of the pin body along its axial direction, and the handle is asymmetrically arranged relative to the axis of the pin body; the handle is adapted to hang down naturally under the action of gravity and drive the pin to rotate, so that the anti-loosening part of the pin is misaligned with the anti-loosening through hole of the support box.

[0008] Beneficial effects: The handle is easy for operators to grip, and by designing the handle with an asymmetrical structure, it automatically droops under gravity after the pin is inserted, causing the pin body to rotate. This facilitates the automatic adjustment of the pin's anti-loosening part to the first anti-loosening position, which is offset from the anti-loosening through hole of the outrigger box, and maintains this position under gravity, ensuring a stable and reliable locking state. It achieves passive self-locking, completing the anti-loosening positioning without manual intervention, further improving safety and ease of operation.

[0009] In one alternative embodiment, when the pin is in the anti-loosening position, the projection of the pin along the second direction is at least partially outside the outline of the anti-loosening through hole of the outrigger box.

[0010] Beneficial effects: By ensuring that the projection of the pin along the second direction is at least partially outside the outline of the anti-loosening through hole of the outrigger box, the anti-loosening part of the pin is completely locked against the inner wall of the outrigger box, forming an effective limit and preventing it from coming out along the second direction; ensuring that the pin can remain stably locked even under long-term bumps or complex working conditions, significantly improving connection reliability.

[0011] In one alternative embodiment, the anti-loosening portion of the pin extends along an axis perpendicular to the pin body.

[0012] Beneficial effects: By extending the anti-loosening part of the pin along the axis perpendicular to the pin body, the contact area between the anti-loosening part of the pin and the inner wall of the outrigger box can be effectively increased, thus improving the vibration resistance performance. At the same time, after the pin is inserted into place, the anti-loosening part of the pin can quickly form an interference fit with the inner wall of the outrigger box, further preventing the pin body from loosening or coming out on its own under vibration.

[0013] In one alternative implementation, the outrigger assembly further includes: A placement bracket is provided, with a placement hole on the bracket, into which a pin is adapted to be inserted to accommodate the pin.

[0014] Beneficial effects: By setting up a storage bracket with a storage hole, the pin can be securely stored when not in use, preventing loss or rattling noises caused by vehicle movement; it also allows operators to quickly retrieve the pin, improving work efficiency. The size of the storage hole matches the shape of the pin, ensuring reliable positioning after insertion and preventing it from easily coming loose.

[0015] In one alternative embodiment, the placement bracket is further formed with a bracket anti-loosening through hole communicating with the placement hole, and the anti-loosening part of the pin is adapted to the bracket anti-loosening through hole. The pin also has a second disassembly position in which the anti-loosening portion of the pin is aligned with the anti-loosening through hole of the bracket to insert or remove the pin from the placement hole, and a second anti-loosening position in which the anti-loosening portion of the pin is offset from the anti-loosening through hole of the bracket to restrict the pin from falling out of the placement hole.

[0016] Beneficial effects: When the pin is inserted into the placement hole, the anti-loosening part of the pin is aligned with the anti-loosening through hole of the bracket, allowing the pin to be smoothly inserted or removed; when the pin is rotated to the second anti-loosening position, the anti-loosening part of the pin is misaligned with the anti-loosening through hole of the bracket, forming a mechanical limit, effectively preventing the pin from accidentally coming out, and facilitating reliable storage of the pin.

[0017] In one alternative embodiment, the placement bracket further includes an anti-rotation portion adapted to restrict rotation of the handle about the axis of the pin body to hold the pin in a second anti-loosening position.

[0018] Beneficial effects: The anti-rotation part is suitable for limiting the rotation of the handle around the axis of the pin body, thereby preventing the pin anti-loosening part from realigning with the anti-loosening through hole of the bracket, avoiding the pin from accidentally coming out of the second anti-loosening position, and ensuring a stable and reliable storage state.

[0019] In one alternative embodiment, the placement bracket includes a first placement member, and a placement hole is formed in the first placement member; The mounting bracket also includes a second mounting member, which has a second mounting hole. The second mounting hole is axially aligned with the mounting hole and together they are used to accommodate the pin body.

[0020] Beneficial effect: The second placement member is arranged at an interval from the first placement member, and the two form a receiving space for accommodating the anti-loosening part of the pin. When the pin is inserted into the placement hole and the second placement hole, the anti-loosening part of the pin is located in the receiving space, avoiding external interference.

[0021] In one alternative implementation, the support bracket is disposed within the leg box.

[0022] Beneficial effects: The bracket is fixed in the outrigger box, and the layout is reasonable, making it easy for operators to pick up and put down the pin with one hand during operation.

[0023] Secondly, this utility model also provides an engineering vehicle, comprising: Vehicle body; And the outrigger assembly, as described above, is installed on the vehicle body.

[0024] Since engineering vehicles include outrigger assemblies, which have the same effect as outrigger assemblies, they will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the support leg assembly of this utility model in its retracted state; Figure 2 This is a side view of the support leg assembly of this utility model in its stowed state; Figure 3 for Figure 2 A schematic diagram of the C-section; Figure 4 This is a schematic diagram of the pin of this utility model being placed on the mounting bracket; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram showing the cooperation between the pin and the mounting bracket of this utility model; Figure 7 This is a side view of the support leg assembly of the present invention when the pin is placed in the bracket; Figure 8 for Figure 7 Enlarged view of point D in the middle; Figure 9 This is a schematic diagram of the pin of this utility model; Figure 10 This is a schematic diagram of the bracket for placing this utility model.

[0027] Explanation of reference numerals in the attached figures: 1. Outrigger; 11. Outrigger pin sleeve; 111. Assembly hole; 2. Outrigger box; 21. Outrigger box mounting hole; 22. Outrigger box anti-loosening through hole; 3. Placement bracket; 31. First placement component; 311. Placement hole; 312. Anti-loosening through hole for bracket; 32. Second placement component; 33. Anti-rotation part; 4. Pin; 41. Pin body; 42. Pin anti-loosening part; 43. Handle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] Cranes are typically equipped with outriggers. By contacting the ground, the outriggers expand the support base, reducing the load on the tires and thus improving the crane's stability and lifting capacity. Outriggers are usually mounted on outrigger boxes and are designed to extend and retract relative to the boxes, switching between extended and retracted states. When the crane is stationary, the outriggers are extended to support the ground, switching from the retracted to the extended state. In this position, the outriggers maintain stable contact with the ground, effectively distributing the load across the entire crane and preventing tipping during operation, ensuring overall stability. When the crane is in motion, the outriggers are retracted, switching from the extended to the retracted state to avoid interfering with normal vehicle movement.

[0033] In related technologies, to prevent the outriggers from accidentally detaching when retracted, mounting holes are typically made at corresponding positions on both the outrigger and the outrigger housing. A pin passes through both mounting holes to lock the outrigger to the housing, ensuring reliable fixation when the outrigger is retracted. When the outrigger is extended, the pin needs to be pulled out to allow for free extension and retraction. However, in these technologies, the pins often detach or are lost due to the lack of an anti-loosening mechanism. Firstly, during vehicle operation, road bumps or vibrations can cause the pins to loosen and gradually detach from the mounting holes, leading to accidental unlocking of the outrigger during travel and posing a safety hazard. Secondly, improper storage after removal can result in the pins being lost at the work site, making it impossible to effectively lock the outrigger after subsequent operations, thus affecting the normal use of the equipment.

[0034] To address this, the present invention proposes a support leg assembly, which uses an anti-loosening structure to prevent the pin from accidentally coming out during use, and provides a pin storage structure on the support leg box to store the removed pin and prevent it from being lost.

[0035] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0036] According to an embodiment of the present invention, in one aspect, a support leg assembly is provided, comprising: The support leg 1 and the support leg box 2 are provided. The support leg 1 is adapted to extend and retract relative to the support leg box 2 in a first direction to switch between an extended state and a retracted state. The support leg 1 is provided with an assembly hole 111 in a second direction, and the support leg box 2 is provided with a support leg box mounting hole 21 in a second direction. The pin 4 is adapted to be inserted into both the outrigger box mounting hole 21 and the assembly hole 111 to limit the outrigger 1 to a retracted state; the pin 4 includes a pin body 41 and a pin anti-loosening part 42 extending from the pin body 41. The outrigger box 2 also has an anti-loosening through hole 22 that communicates with the outrigger box mounting hole 21, and the anti-loosening part 42 of the pin is adapted to the anti-loosening through hole 22 of the outrigger box. The pin 4 has a first disassembly position in which the pin anti-loosening part 42 is aligned with the outrigger box anti-loosening through hole 22 to insert or remove the pin 4 into the outrigger box mounting hole 21, and a first anti-loosening position in which the pin anti-loosening part 42 is offset from the outrigger box anti-loosening through hole 22 to restrict the pin 4 from falling out of the outrigger box mounting hole 21. The first direction and the second direction are not parallel.

[0037] The outrigger 1 of this application is adapted to extend and retract relative to the outrigger box 2 in a first direction. When the vehicle is parked, the pin 4 needs to be pulled out from the outrigger box mounting hole 21 and assembly hole 111 so that the outrigger 1 can extend to the unfolded state and support the ground. When the outrigger is retracted after the operation is completed, the outrigger is retracted to the storage state. At this time, the pin 4 needs to be reinserted into the outrigger box mounting hole 21 and assembly hole 111 to lock the outrigger 1.

[0038] Combination Figure 5 As shown, the outrigger housing 2 also has an anti-loosening through hole 22 that communicates with the outrigger housing mounting hole 21. The anti-loosening through hole 22 is located on one side of the outrigger housing mounting hole 21. For example, the outrigger housing mounting hole 21 can be a circular hole, and the anti-loosening through hole 22 is an elongated hole located at the edge of the circular hole. The extension direction of the elongated hole is perpendicular to the axial direction of the pin body 41. Correspondingly, the pin 4 includes a pin body 41 and an anti-loosening portion 42 extending from the pin body 41. The anti-loosening portion 42 extends radially from the pin body 41, and its shape is adapted to the anti-loosening through hole 22. For example, the pin body 41 can be a cylinder, and the anti-loosening portion 42 is a protrusion extending from the side of the cylinder.

[0039] To prevent the pin 4 from accidentally dislodging due to vibration during vehicle operation, the anti-loosening part 42 rotates to a first anti-loosening position after insertion, offset from the anti-loosening through hole 22 of the outrigger box, thereby restricting the pin 4 from dislodging in the second direction and achieving the anti-loosening function. When disassembly is required, the pin 4 is rotated to the first disassembly / removal position, aligning the anti-loosening part 42 with the anti-loosening through hole 22 of the outrigger box, allowing it to be easily pulled out. Correspondingly, when inserting the pin 4 into the outrigger box mounting hole 21 and assembly hole 111 in the second direction, it is necessary to ensure that the anti-loosening part 42 is aligned with the anti-loosening through hole 22 of the outrigger box to avoid the pin body 41 being obstructed and unable to be fully inserted.

[0040] The outrigger 1 is provided with an outrigger pin sleeve 11. The outrigger pin sleeve 11 has a mounting hole 111 formed through it in the second direction. The pin body 41 is slidably inserted into the outrigger pin sleeve 11. When the mounting hole 111 is aligned with the outrigger box mounting hole 21, the pin 4 is inserted and locks the outrigger.

[0041] This application utilizes a locking part 42 formed on the pin 4 and a corresponding locking hole 22 on the outrigger box 2. Locking and unlocking are achieved by changing the relative position of the locking part 42 and the locking hole 22. When the locking part 42 and the locking hole 22 are aligned, the pin can be freely inserted or removed in a second direction, enabling quick assembly and disassembly. After the pin 4 is inserted, rotating the locking part 42 to offset it from the locking hole 22 allows it to be locked against the inner wall of the outrigger box 2, preventing it from coming loose in the second direction and effectively preventing the risk of loosening due to vibration during vehicle operation, thus improving operational safety. Furthermore, the mating structure of the locking part 42 and the locking hole 22 is simple and reliable, requiring no additional fasteners to achieve a self-locking function, significantly reducing maintenance costs. The rotary locking method facilitates manual operation, requiring only one hand to complete the insertion, rotation, and locking steps, making operation simple.

[0042] In this embodiment, the first direction and the second direction are perpendicular to each other. The first direction is the axial direction of the outrigger, and the second direction is the radial direction of the outrigger. The pin is inserted radially to limit the axial movement of the outrigger.

[0043] Additionally, the mating surfaces of the anti-loosening part 42 of the pin and the anti-loosening through hole 22 of the support box are designed with a chamfered transition, which facilitates automatic alignment during initial insertion and reduces the difficulty of alignment.

[0044] In some embodiments, the pin 4 further includes a handle 43, which is connected to one end of the pin body 41 in the axial direction and is asymmetrically arranged with respect to the axis of the pin body 41. The handle 43 is adapted to hang down naturally under the action of gravity and drive the pin 4 to rotate so that the anti-loosening part 42 of the pin is misaligned with the anti-loosening through hole 22 of the support box.

[0045] Combination Figure 9 As shown, the handle 43 is easy for operators to grip, and by designing the handle 43 as an asymmetrical structure, it automatically droops under gravity after the pin is inserted, causing the pin body 41 to rotate. This facilitates the automatic adjustment of the pin anti-loosening part 42 to the first anti-loosening position that is offset from the anti-loosening through hole 22 of the outrigger box, and it is maintained in this position under gravity to ensure a stable and reliable locking state. This achieves passive self-locking, and the anti-loosening positioning can be completed without manual intervention, further improving safety and ease of operation.

[0046] It should be noted that the relative position of the handle 43 and the anti-loosening part 42 is not limited in much. It is only necessary to ensure that the handle 43 can drive the anti-loosening part 42 to rotate to a position that is offset from the anti-loosening through hole 22 of the support box when it is in a natural hanging state.

[0047] Combination Figure 3As shown, to facilitate gripping by the operator, the handle 43 is constructed as a bent or arc-shaped grip structure. This ensures that when the pin 4 is installed, the handle 43 maintains a certain distance from the outer surface of the outrigger box 2, making it easier for the operator to grip and preventing the handle 43 from being too tightly pressed against the outer surface of the outrigger box 2, which would make gripping difficult. At the same time, this distance also helps to prevent the handle 43 from making knocking noises due to vibrations during vehicle operation.

[0048] In some embodiments, when the pin 4 is in the anti-loosening position, the projection of the pin 4 along the second direction is at least partially outside the outline of the anti-loosening through hole 22 of the outrigger box.

[0049] By ensuring that the projection of the pin 4 along the second direction is at least partially outside the outline of the anti-loosening through hole 22 in the outrigger box, the anti-loosening part 42 of the pin is completely engaged with the inner wall of the outrigger box 2, forming an effective limit and preventing it from coming out along the second direction; this ensures that even under long-term bumpy or complex working conditions, the pin can still be stably kept in the locked state, significantly improving the reliability of the connection.

[0050] In some embodiments, the anti-loosening portion 42 of the pin extends along an axis perpendicular to the pin body 41.

[0051] By extending the anti-loosening part 42 of the pin along an axis perpendicular to the pin body 41, the contact area between the anti-loosening part 42 and the inner wall of the outrigger box can be effectively increased, improving vibration resistance. Simultaneously, after the pin 4 is inserted into place, the anti-loosening part 42 can quickly form an interference fit with the inner wall of the outrigger box 2, further preventing the pin body 41 from loosening or disengaging under vibration. The anti-loosening part 42, combined with the gravity self-locking function of the handle 43, further enhances the stability and safety of the overall connection.

[0052] In some embodiments, the leg assembly further includes: The placement bracket 3 has a placement hole 311, and the pin 4 is adapted to be inserted into the placement hole 311 to accommodate the pin 4.

[0053] By setting up a placement bracket 3 and opening a placement hole 311 on the placement bracket 3, the pin 4 can be securely stored when not in use, preventing loss or abnormal noise caused by shaking with the vehicle; at the same time, it is convenient for operators to quickly retrieve it, improving work efficiency. The size of the placement hole 311 matches the shape of the pin 4, ensuring that the pin is reliably positioned after insertion and is not easy to loosen.

[0054] Optionally, an elastic bushing or wear-resistant coating may be provided inside the placement hole 311 to reduce wear between the pin 4 and the hole wall and extend its service life.

[0055] In some embodiments, the placement bracket 3 also has a bracket anti-loosening through hole 312 communicating with the placement hole 311, and the pin anti-loosening part 42 is adapted to the bracket anti-loosening through hole 312. The pin 4 also has a second disassembly position in which the pin anti-loosening part 42 is aligned with the bracket anti-loosening through hole 312 to insert or remove the pin 4 into the placement hole 311, and a second anti-loosening position in which the pin anti-loosening part 42 is offset from the bracket anti-loosening through hole 312 to restrict the pin 4 from falling out of the placement hole 311.

[0056] The placement bracket 3 also has a bracket anti-loosening through hole 312 that communicates with the placement hole 311. The bracket anti-loosening through hole 312 is opened on one side of the placement hole 311. For example, the placement hole 311 can be a circular through hole, and the bracket anti-loosening through hole 312 can extend outward along the diameter direction of the circular through hole to form a notch. This notch is adapted to the size of the anti-loosening part 42 of the pin, so that when the pin 4 is inserted into the placement hole 311, the anti-loosening part 42 of the pin is aligned with the anti-loosening through hole 312 of the bracket, so that the pin can be smoothly inserted or removed. When the pin is rotated to the second anti-loosening position, the anti-loosening part 42 of the pin is misaligned with the anti-loosening through hole 312 of the bracket, forming a mechanical limit, effectively preventing the pin 4 from accidentally coming out, and facilitating the reliable storage of the pin 4.

[0057] In some embodiments, combined with Figure 6 As shown, the placement bracket 3 also includes an anti-rotation part 33, which is adapted to restrict the handle 43 from rotating about the axis of the pin body 41, so as to keep the pin 4 in the second anti-loosening position.

[0058] The anti-rotation part 33 is adapted to the shape of the handle 43. When the pin 4 is rotated to the second anti-loosening position, the anti-rotation part 33 is adapted to restrict the handle 43 from rotating around the axis of the pin body 41, thereby preventing the pin anti-loosening part 42 from realigning with the bracket anti-loosening through hole 312, avoiding the pin 4 from accidentally coming out of the second anti-loosening position, and ensuring that the storage state is stable and reliable.

[0059] In this embodiment, the anti-rotation part 33 is a structure of two protruding columns provided on the placement bracket 3. The two protruding columns are spaced apart and are adapted to limit the handle 43 from both sides. When the handle 43 is rotated between the two protruding columns, its end abuts against the side of the protruding column to form a rotation stop, thereby locking the pin in the second anti-loosening position.

[0060] In some embodiments, the placement bracket 3 includes a first placement member 31, and a placement hole 311 is formed in the first placement member 31; The placement bracket 3 also includes a second placement member 32, which has a second placement hole 321. The second placement hole 321 and the placement hole 311 are aligned axially and together are used to accommodate the pin body 41.

[0061] The second placement member 32 is arranged at a distance from the first placement member 31, and a receiving space is formed between them to accommodate the anti-loosening part 42 of the pin. When the pin 4 is inserted into the placement hole 311 and the second placement hole 321, the anti-loosening part 42 of the pin is located in the receiving space to avoid external interference.

[0062] The second placement hole 321 is aligned with the placement hole 311 along the axial direction to ensure that the pin body 41 is stably supported in the axial direction, while allowing the pin anti-loosening part 42 to rotate freely to the target position within the accommodating space.

[0063] In some embodiments, the placement bracket 3 is disposed in the leg box 2.

[0064] The bracket 3 is fixed to the outrigger box 2. The position is reasonably arranged, which makes it easy for the operator to pick up and put down the pin 4 with one hand during the operation.

[0065] Additionally, the placement bracket 3 and the leg box 2 are designed as a single unit, for example, by casting or stamping them into a single structure, which can reduce the number of assembly parts and improve the overall structure and strength.

[0066] According to an embodiment of the present invention, another aspect provides an engineering vehicle, comprising: Vehicle body; And the outrigger assembly, as described above, is installed on the vehicle body.

[0067] In this embodiment, the engineering vehicle can specifically be a crane truck, concrete pump truck, or aerial work platform truck, etc. Its outrigger assembly can achieve quick insertion and reliable locking when the vehicle is traveling or transferring, ensuring the stability of the outrigger in the non-operating state. When deployed for work, the pin 4 can quickly disengage from the anti-loosening structure, facilitating the deployment of the outrigger and entry into the working state. Furthermore, the pin 4 can be securely stored in the placement bracket 3 to prevent shaking or falling off.

[0068] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A support leg assembly, characterized in that, include: The support leg (1) and the support leg box (2) are provided. The support leg (1) is adapted to extend and retract relative to the support leg box (2) in a first direction to switch between an extended state and a retracted state. The support leg (1) is provided with an assembly hole (111) in a second direction, and the support leg box (2) is provided with a support leg box mounting hole (21) in the second direction. A pin (4) is adapted to be inserted into both the support leg box mounting hole (21) and the assembly hole (111) to limit the support leg (1) to the storage state; the pin (4) includes a pin body (41) and a pin anti-loosening part (42) extending from the pin body (41). The outrigger box (2) also has an anti-loosening through hole (22) that communicates with the outrigger box mounting hole (21), and the anti-loosening part (42) of the pin is adapted to the anti-loosening through hole (22) of the outrigger box; The pin (4) has a first disassembly position in which the pin anti-loosening part (42) is aligned with the anti-loosening through hole (22) of the outrigger box to insert or remove the pin (4) into or out of the outrigger box mounting hole (21), and a first anti-loosening position in which the pin anti-loosening part (42) is offset from the anti-loosening through hole (22) of the outrigger box to restrict the pin (4) from being dislodged from the outrigger box mounting hole (21); Wherein, the first direction is not parallel to the second direction.

2. The outrigger assembly according to claim 1, characterized in that, The pin (4) also includes a handle (43), which is connected to one end of the pin body (41) in the axial direction and is asymmetrically arranged with respect to the axis of the pin body (41). The handle (43) is adapted to hang down naturally under the action of gravity and drive the pin (4) to rotate so that the anti-loosening part (42) of the pin is misaligned with the anti-loosening through hole (22) of the support box.

3. The outrigger assembly according to claim 1, characterized in that, When the pin (4) is in the anti-loosening position, the projection of the pin (4) along the second direction is at least partially outside the outline of the anti-loosening through hole (22) of the leg box.

4. The outrigger assembly according to claim 1, characterized in that, The anti-loosening part (42) of the pin extends along the axis perpendicular to the pin body (41).

5. The outrigger assembly according to any one of claims 1 to 4, characterized in that, The outrigger assembly also includes: Placement bracket (3) is provided with placement hole (311), and the pin (4) is adapted to be inserted into the placement hole (311) to accommodate the pin (4).

6. The outrigger assembly according to claim 5, characterized in that, The placement bracket (3) also has a bracket anti-loosening through hole (312) that communicates with the placement hole (311), and the pin anti-loosening part (42) is adapted to the bracket anti-loosening through hole (312); The pin (4) also has a second disassembly position in which the pin anti-loosening part (42) is aligned with the bracket anti-loosening through hole (312) to insert or remove the pin (4) into the placement hole (311), and a second anti-loosening position in which the pin anti-loosening part (42) is offset from the bracket anti-loosening through hole (312) to restrict the pin (4) from coming out of the placement hole (311).

7. The outrigger assembly according to claim 6, characterized in that, The placement bracket (3) further includes an anti-rotation part (33) adapted to restrict the handle (43) from rotating about the axis of the pin body (41) to hold the pin (4) in the second anti-loosening position.

8. The outrigger assembly according to claim 7, characterized in that, The placement bracket (3) includes a first placement member (31), and the placement hole (311) is formed in the first placement member (31). The placement bracket (3) further includes a second placement member (32), which has a second placement hole (321). The second placement hole (321) is axially aligned with the placement hole (311) and together they are used to accommodate the pin body (41).

9. The outrigger assembly according to claim 5, characterized in that, The placement bracket (3) is disposed on the support leg box (2).

10. An engineering vehicle, characterized in that, include: Vehicle body; And a leg assembly as described in any one of claims 1 to 9, disposed on the vehicle body.

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