Landing leg device and loader-digger

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a supporting leg device and a backhoe loader. The supporting leg device comprises a sleeve, at least one fixing piece, at least one driving piece and a plurality of wear-resisting pads, and the fixing pieces are used for being connected to the outer pipe. The wear-resistant pad is arranged in the mounting hole of the outer pipe, and part of the wear-resistant pad extends out of the mounting hole. The sleeve is arranged on the outer pipe in a sleeving mode, a plurality of abutting parts are arranged on the inner wall of the sleeve, and the driving piece is correspondingly connected with the fixing piece and the sleeve. The driving piece drives the sleeve to move relative to the fixing piece, so that part of the abutting part abuts against the extending abrasion-resistant pad, and the abrasion-resistant pad is pushed to move towards the inner pipe. According to the supporting leg device and the backhoe loader, the frequency of replacing the wear-resisting pad is reduced, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a support leg device and a backhoe loader. BACKGROUND

[0002] When the backhoe loader is performing the digging operation, the support leg is needed to support the vehicle body so that the tire is away from the support surface, thereby avoiding the influence on the tire during the digging process. The support leg generally adopts the telescopic structure composed of the inner and outer two-layer square tubes. During the use, the inner tube moves relative to the outer tube, and the friction is generated between the inner tube and the outer tube. Therefore, the wear-resistant pad is needed to be arranged to reduce the friction.

[0003] In the prior art, the mounting hole is formed on the outer tube, and the wear-resistant pad is put into the outer tube through the mounting hole. The wear-resistant pad is abutted between the outer tube and the inner tube. The wear-resistant pad will be worn due to the long-time use, and the gap is generated between the wear-resistant pad and the inner tube. Therefore, the wear-resistant pad needs to be replaced.

[0004] However, the wear-resistant pad is frequently replaced, and the operation is troublesome. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a support leg device and a backhoe loader, which reduces the frequency of replacing the wear-resistant pad and facilitates the operation.

[0006] In a first aspect, the present application provides a support leg device, comprising: at least one fixing member, configured to be connected on the outer tube.

[0007] A plurality of wear-resistant pads are configured to be arranged in the mounting hole of the outer tube, and part of the wear-resistant pads are extended out of the mounting hole.

[0008] A sleeve is configured to be sleeved on the outer tube, and the inner wall of the sleeve has a plurality of abutting portions.

[0009] At least one driving member is correspondingly connected with the fixing member and the sleeve. The driving member drives the sleeve to move relative to the fixing member, so that part of the abutting portions abut on the extended wear-resistant pad to push the wear-resistant pad to move towards the inner tube.

[0010] In a possible implementation manner, the abutting portion of the support leg device provided by the present application is a wedge-shaped block, and the first inclined surface of the wedge-shaped block is configured to abut on the wear-resistant pad.

[0011] In a possible implementation manner, the support leg device provided by the present application has a second inclined surface matched with the first inclined surface on the wear-resistant pad.

[0012] In a possible implementation manner, the support leg device provided by the present application has a plug-in hole on the fixing member, a connecting portion on the sleeve, and the driving member is inserted into the plug-in hole and connected with the connecting portion.

[0013] In one possible implementation, the leg device provided in the present application has an external thread on the driving member, and an internal thread matching the external thread on the connecting portion, and the driving member and the connecting portion are connected to each other via the external thread and the internal thread.

[0014] In a possible implementation, the leg device provided in the present application further includes: a fastener connected to the driving member, and the fastener rotates or reversely rotates relative to the driving member to abut or disengage from the surface of the fixing member.

[0015] In a possible implementation, the support leg device provided in the present application further includes: a support member for being sleeved on the outer tube, a first end of the support member abutting against the fixing member, and a second end of the support member being inserted into the sleeve.

[0016] In a possible implementation, the support leg device provided in the present application has a plurality of avoidance grooves on the support member, and the avoidance grooves are used to avoid the wear-resistant pads.

[0017] In a possible implementation, in the leg device provided in the present application, a third inclined surface matching the first inclined surface is provided on the support member, and a portion of the third inclined surface abuts against the first inclined surface.

[0018] In a second aspect, the present application further provides an excavator loader, comprising an excavator loader body and any one of the support leg devices provided in the first aspect above, arranged on the excavator loader body.

[0019] The support leg device and excavator loader provided by the present application are characterized in that the support leg device is provided with a sleeve, at least one fixing member, at least one driving member and a plurality of wear-resistant pads, and the fixing member is used to be connected to the outer tube. The wear-resistant pad is arranged in the mounting hole of the outer tube, and part of the wear-resistant pad extends out of the mounting hole. The sleeve is sleeved on the outer tube, and a plurality of abutting portions are provided on the inner wall of the sleeve, and the driving member connects the fixing member and the sleeve accordingly. As the wear-resistant pad is used and worn, the driving member drives the sleeve to move relative to the fixing member, so that part of the abutting portion abuts against the protruding wear-resistant pad, and the abutting portion applies pressure to the wear-resistant pad to push the wear-resistant pad toward the inner tube. This reduces the gap between the wear-resistant pad and the inner tube, compensates for the wear of the wear-resistant pad, reduces the frequency of replacing the wear-resistant pad, and facilitates operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic structural diagram of a leg support device provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure from another angle;

[0023] Figure 3 for Figure 1 A structural diagram from another angle;

[0024] Figure 4 for Figure 1 Schematic diagram of the structure of the middle sleeve;

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the middle support member;

[0026] Figure 6 A diagram illustrating the use status of the leg device provided in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 10-outer tube; 11-mounting hole; 20-inner tube;

[0029] 100-fixing piece; 110-connection hole;

[0030] 200-wear-resistant pad; 210-second inclined surface;

[0031] 300-sleeve;

[0032] 310 - abutment portion; 311 - first inclined surface;

[0033] 320-connecting part; 321-internal thread;

[0034] 400-driving element; 410-external thread;

[0035] 500-fasteners;

[0036] 600 - support member; 610 - first end; 620 - second end; 630 - avoidance groove; 640 - third inclined surface.

[0037] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0038] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art may adjust them as needed to suit specific applications.

[0039] Secondly, it needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Then, it also needs to be explained that in the description of the present application, the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0042] As shown in the background, in the prior art, a mounting hole is formed on the outer pipe, and the wear-resistant pad is placed in the outer pipe through the mounting hole. The wear-resistant pad abuts between the outer pipe and the inner pipe. The wear-resistant pad will wear out after a long time of use, resulting in a gap between the wear-resistant pad and the inner pipe, so the wear-resistant pad needs to be replaced.

[0043] However, it is troublesome to replace the wear-resistant pad frequently.

[0044] Based on this, the present application provides a support leg device and an excavator loader. The support leg device is provided with a sleeve, at least one fixing member, at least one driving member and a plurality of wear-resistant pads. The fixing member is used to connect to the outer pipe. The wear-resistant pad is arranged in the mounting hole of the outer pipe, and part of the wear-resistant pad extends out of the mounting hole. The sleeve is sleeved on the outer pipe, and the inner wall of the sleeve has a plurality of abutting portions. The driving member is connected to the fixing member and the sleeve. With the use and wear of the wear-resistant pad, the driving member drives the sleeve to move relative to the fixing member, so that part of the abutting portion abuts against the extended wear-resistant pad. The abutting portion applies pressure to the wear-resistant pad to push the wear-resistant pad towards the inner pipe. Thus, the gap between the wear-resistant pad and the inner pipe is reduced, the wear of the wear-resistant pad is compensated, the frequency of replacing the wear-resistant pad is reduced, and the operation is convenient.

[0045] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0046] Referring to Figure 1 , Figure 4 and Figure 6 , the leg device provided by the present application comprises at least one fixing member 100 connected to the outer pipe 10.

[0047] A plurality of wear pads 200 are arranged in the mounting holes 11 of the outer pipe 10, and part of the wear pads 200 protrude from the mounting holes 11.

[0048] A sleeve 300 is arranged on the outer pipe 10, and the inner wall of the sleeve 300 has a plurality of abutting portions 310.

[0049] At least one driving member 400 is connected to the fixing member 100 and the sleeve 300, and the driving member 400 drives the sleeve 300 to move relative to the fixing member 100, so that part of the abutting portions 310 abut against the protruding wear pads 200 to push the wear pads 200 towards the inner pipe 20.

[0050] It should be noted that the leg device provided by the embodiments of the present application can be used in engineering machinery, including but not limited to excavator loaders, truck cranes and heavy trucks, etc.

[0051] The number of the fixing member 100 can be one, for example, and the number can also be two, as shown in Figures 1 to 3 Two fixing members 100 are symmetrically arranged on both sides of the outer pipe 10, and the number can also be more than two, which is not limited by the embodiments of the present application.

[0052] The fixing member 100 is connected to the outer pipe 10, for example, the fixing member 100 can be welded to the outer pipe 10, or connected by screws, or connected by other means, which is not limited by the embodiments of the present application.

[0053] It can be understood that the wear-resistant pad 200 is used to reduce the friction between the inner tube 20 and the outer tube 10, protecting the inner tube 20 and the outer tube 10 from wear. The wear-resistant pad 200 is used to be arranged in the mounting hole 11 of the outer tube 10. It should be noted that the mounting hole 11 is located on the side wall of the outer tube 10. When the outer tube 10 is a square tube, the four sides of the outer tube 10 have mounting holes 11. In a specific implementation, there can be four wear-resistant pads 200, and the four wear-resistant pads 200 are respectively arranged on different sides of the outer tube 10, and each wear-resistant pad 200 abuts against a different side of the inner tube 20.

[0054] The sleeve 300 is sleeved on the outer tube 10 and can provide a certain degree of protection for the outer tube 10. An abutment portion 310 is provided on the inner wall of the sleeve 300. Part of the wear-resistant pad 200 extends out of the mounting hole 11, so that the abutment portion 310 can contact the extended wear-resistant pad 200.

[0055] The driving member 400 can drive the sleeve 300 to move relative to the fixing member 100 by connecting the fixing member 100 and the sleeve 300 , that is, drive the abutting portion 310 on the sleeve 300 to move. The moving abutting portion 310 can push the wear-resistant pad 200 .

[0056] The plurality of abutment portions 310 may be four in number, and the four abutment portions 310 are disposed on different sides of the sleeve 300. The sleeve 300 pushes each wear-resistant pad 200 from different directions via the four abutment portions 310. Furthermore, the sleeve 300 can better disperse the force transmitted by the wear-resistant pad 200, thereby reducing deformation.

[0057] It should be noted that the driving member 400 can achieve driving through mechanical, hydraulic or electric means, as long as it can quickly drive the sleeve 300 and the abutment portion 310 to move after the wear-resistant pad 200 is worn. The embodiment of the present application does not impose too many restrictions on this.

[0058] In the specific implementation, refer to Figure 6 As shown, as the wear pad 200 is used and wears, a gap may gradually form between the wear pad 200 and the inner tube 20. The driver 400 drives the sleeve 300 to move, causing the abutment 310 on the inner wall of the sleeve 300 to move synchronously. The moving abutment 310 applies force to the wear pad 200, pushing it toward the inner tube 20, thereby reducing the gap between the wear pad 200 and the inner tube 20, compensating for wear on the wear pad 200, and maintaining close contact between the wear pad 200 and the inner tube 20. This reduces the frequency of replacing the wear pad 200 due to wear, facilitating operation.

[0059] In some embodiments, reference Figure 4 and Figure 6As shown, the abutting portion 310 is a wedge-shaped block, and the first inclined surface 311 of the wedge-shaped block is used to abut against the wear-resistant pad 200 .

[0060] In specific implementation, as the wear-resistant pad 200 wears, the sleeve 300 gradually moves toward the fixing member 100 under the action of the driving member 400, thereby driving the wedge block on the sleeve 300 to move toward the fixing member 100. Therefore, the first inclined surface 311 on the wedge block moves with the wedge block, and the moving first inclined surface 311 can abut against the worn wear-resistant pad 200, thereby applying a force to the wear-resistant pad 200 to push the wear-resistant pad 200 toward the inner tube 20, thereby reducing the gap between the wear-resistant pad 200 and the inner tube 20.

[0061] The wedge block contacts the wear-resistant pad 200 via the first inclined surface 311 . The first inclined surface 311 can evenly apply force to the wear-resistant pad 200 , thereby avoiding sudden excessive squeezing of the wear-resistant pad 200 and improving the reliability of the device.

[0062] In some embodiments, reference Figure 4 and Figure 6 As shown, the wear-resistant pad 200 has a second inclined surface 210 matching the first inclined surface 311 .

[0063] It should be noted that a second inclined surface 210 is provided on the wear-resistant pad 200, and the second inclined surface 210 matches the first inclined surface 311 of the wedge block, thereby increasing the contact area between the wear-resistant pad 200 and the wedge block, and can more effectively transmit the force of the wedge block, so that the force applied by the wedge block on the wear-resistant pad 200 is more uniform, reducing local stress concentration.

[0064] It should also be noted that by setting a second inclined surface 210 that matches the first inclined surface 311, the gap between the wedge block and the wear-resistant pad 200 can be reduced, and at the same time a more stable contact surface can be provided to prevent the wear-resistant pad 200 from sliding or dislocating during use, thereby improving the stability and reliability of the device during operation.

[0065] In some embodiments, reference Figure 2 As shown, the fixing member 100 has an inserting hole 110 , the sleeve 300 has a connecting portion 320 , the driving member 400 is inserted into the inserting hole 110 , and the driving member 400 is connected to the connecting portion 320 .

[0066] As will be appreciated, the insertion hole 110 provides a secure fixing point for the driver 400, and the connecting portion 320 provides a connection point between the driver 400 and the sleeve 300. This ensures a secure connection between the driver 400, the fixing member 100, and the sleeve 300, respectively. This ensures the stability of the device during operation and reduces loosening or misalignment due to vibration or impact. This secure connection also reduces the possibility of the driver 400 falling off or failing during operation, thereby improving the safety of the device.

[0067] The driving member 400 is directly connected to the fixing member 100 and the sleeve 300 through the insertion hole 110 and the connecting portion 320 , ensuring a simple and efficient force transmission path so that the driving member 400 can drive the sleeve 300 to move toward the fixing member 100 .

[0068] It should be noted that, in specific implementation, the plug hole 110 and the connecting portion 320 can adapt to different types and specifications of driving components 400, and suitable driving components 400 (such as hydraulic cylinders, electric push rods, etc.) can be selected according to specific needs to meet the requirements of different application scenarios.

[0069] In some embodiments, reference Figure 2 and Figure 4 As shown, the driving member 400 is provided with an external thread 410 , and the connecting portion 320 is provided with an internal thread 321 matching the external thread 410 . The driving member 400 and the connecting portion 320 are connected via the external thread 410 and the internal thread 321 .

[0070] It can be understood that the threaded connection allows precise linear motion control. By changing the angle of the rotating drive member 400, the movement distance of the sleeve 300 can be precisely controlled, thereby controlling the pressure applied by the abutment portion 310 to the wear-resistant pad 200, that is, the compensation amount of the wear-resistant pad 200 can be precisely grasped, thereby achieving stepless compensation of the wear-resistant pad 200.

[0071] The threaded connection design allows the operator to drive the sleeve 300 to move by a simple rotation action, which is convenient to operate and simplifies the compensation process of the wear-resistant pad 200.

[0072] It should be noted that the connection between the external thread 410 and the internal thread 321 has a certain self-locking capability. In the absence of external force, it can maintain the position of the driver 400 and the connecting portion 320, thereby preventing accidental loosening of the driver 400 and the connecting portion 320 and improving the stability and safety of the device. The threaded connection provides a strong mechanical bond, capable of withstanding large axial loads, ensuring a tight connection between the driver 400 and the connecting portion 320, reducing the possibility of loosening and ensuring the reliability of the leg device under heavy loads.

[0073] It should also be noted that the threaded connection also simplifies the installation and disassembly process, which can be completed by simply rotating, reducing the time and tool requirements for installation and maintenance, and improving the convenience of operation.

[0074] In some embodiments, reference Figure 1 and Figure 2 As shown, it also includes: a fastener 500 connected to the driving member 400, and the fastener 500 rotates or rotates in reverse relative to the driving member 400 to abut against or disengage from the surface of the fixing member 100.

[0075] Specifically, the fastener 500 provides additional fixing force by being connected to the driving member 400 , and the fastener 500 abuts against the surface of the fixing member 100 to play a role of locking and preventing loosening.

[0076] The fastener 500 is disengaged from the surface of the fixing member 100, allowing the driver 400 to rotate relative to the fixing member 100 to drive the sleeve 300 to move. After the sleeve 300 moves to the target position, the fastener 500 is re-engaged with the surface of the fixing member 100. The fastener 500 can prevent the driver 400 from rotating and loosening due to vibration or other external forces, and prevent the sleeve 300 from moving suddenly, further improving the reliability and stability of the device.

[0077] In a specific implementation, the fastener 500 can be a nut, which is connected to the driving member 400 through a thread. The driving member 400 can be easily controlled by rotating the nut, which improves the convenience of operation. When the position of the sleeve 300 needs to be adjusted, the nut can be rotated quickly so that the driving member 400 can be rotated relative to the fixing member 100 without the need for complicated tools or steps, and the operation is convenient.

[0078] In some embodiments, reference Figure 1 、 Figure 5 and Figure 6 As shown, it also includes: a support member 600 for being sleeved on the outer tube 10 , a first end 610 of the support member 600 abuts against the fixing member 100 , and a second end 620 of the support member 600 is inserted into the sleeve 300 .

[0079] The support member 600 is sleeved on the outer tube 10 , and the support member 600 can provide additional structural support for the outer tube 10 , thereby increasing the strength of the outer tube 10 and reducing the possibility of deformation or tearing of the outer tube 10 under stress.

[0080] In a specific implementation, in order to ensure the firmness of the connection between the support member 600 and the outer tube 10 , the support member 600 may also be welded to the outer tube 10 .

[0081] It should be noted that the support 600 can be integrally formed, or can be formed by welding the four support plates, and the embodiments of the present application do not make too many limitations in this regard.

[0082] In some embodiments, referring to Figure 5 and Figure 6 , the support 600 has a plurality of avoidance grooves 630 for avoiding the wear pad 200.

[0083] It can be understood that the avoidance grooves 630 provide avoidance space for the wear pad 200, so that the wear pad 200 extending from the mounting hole 11 can abut against the abutting portion 310 through the avoidance grooves 630.

[0084] It should be noted that the shape and size of the avoidance grooves 630 should be adapted to the shape and size of the wear pad 200. Exemplarily, the avoidance grooves 630 can be a positive direction, a rectangle or a trapezoid, or can be other shapes, and the embodiments of the present application do not make too many limitations in this regard.

[0085] In some embodiments, referring to Figure 4 and Figure 5 , the support 600 is provided with a third slope 640 matched with the first slope 311, and part of the third slope 640 abuts against the first slope 311.

[0086] Specifically, by providing the third slope 640 on the support 600, the third slope 640 is matched with the first slope 311, which can reduce the gap between the support 600 and the sleeve 300, increase the contact surface therebetween, so that the support 600 provides support for the sleeve 300, and ensures the stability of the sleeve 300.

[0087] The matched third slope 640 and the first slope 311 reduce the resistance of the support 600 to the sleeve 300, so that the sleeve 300 can smoothly move relative to the support 600.

[0088] The present application also provides a backhoe loader, comprising a backhoe loader body and a support leg device arranged on the backhoe loader body.

[0089] Among them, the specific structure and working mode of the support leg device are described in detail in the above embodiments, which will not be repeated here.

[0090] The skilled in the art can understand that the outrigger device and the excavator loader provided by the application, the outrigger device is provided with the sleeve 300, the at least one fixing member 100, the at least one driving member 400 and the plurality of wear pads 200, the fixing member 100 is used for being connected on the outer pipe 10. The wear pad 200 is arranged in the mounting hole 11 of the outer pipe 10, and part of the wear pad 200 extends out of the mounting hole 11. The sleeve 300 is sleeved on the outer pipe 10, and the inner wall of the sleeve 300 has a plurality of abutting portions 310. The driving member 400 is correspondingly connected with the fixing member 100 and the sleeve 300. With the use and wear of the wear pad 200, the driving member 400 drives the sleeve 300 to move relative to the fixing member 100, so that part of the abutting portion 310 abuts against the extended wear pad 200, and the abutting portion 310 applies pressure to the wear pad 200 to push the wear pad 200 to move towards the inner pipe 20. Thus, the gap between the wear pad 200 and the inner pipe 20 is reduced, the wear of the wear pad 200 is compensated, the frequency of replacing the wear pad 200 is reduced, and the operation is convenient.

[0091] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0092] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of differentiation, and are not used to limit the scope of the embodiments of the present application.

[0093] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but the skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. The skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A leg support device, characterized in that: include: at least one fixing member (100) for connecting to the outer tube (10); a plurality of wear-resistant pads (200) for being arranged in the mounting hole (11) of the outer tube (10), with some of the wear-resistant pads (200) extending out of the mounting hole (11); A sleeve (300) is used to be sleeved on the outer tube (10), and the inner wall of the sleeve (300) has a plurality of abutment portions (310); At least one driving member (400) is correspondingly connected to the fixing member (100) and the sleeve (300), and the driving member (400) drives the sleeve (300) to move relative to the fixing member (100), so that part of the abutting portion (310) abuts against the extended wear-resistant pad (200), thereby pushing the wear-resistant pad (200) to move toward the inner tube (12).

2. The leg support device according to claim 1, characterized in that: The abutting portion (310) is a wedge-shaped block, and the first inclined surface (311) of the wedge-shaped block is used to abut against the wear-resistant pad (200).

3. The leg support device according to claim 2, characterized in that: The wear-resistant pad (200) has a second inclined surface (210) that matches the first inclined surface (311).

4. The leg support device according to any one of claims 1 to 3, characterized in that: The fixing member (100) has a plug hole (110), the sleeve (300) has a connecting portion (320), the driving member (400) is inserted into the plug hole (110), and the driving member (400) is connected to the connecting portion (320).

5. The leg support device according to claim 4, characterized in that: The driving member (400) is provided with an external thread (410), and the connecting portion (320) is provided with an internal thread (321) matching the external thread (410). The driving member (400) and the connecting portion (320) are connected to the internal thread (321) via the external thread (410).

6. The leg support device according to claim 4, characterized in that: Also includes: A fastener (500) is connected to the driving member (400), and the fastener (500) rotates relative to the driving member (400) or rotates in the opposite direction to abut against or disengage from the surface of the fixing member (100).

7. The leg support device according to any one of claims 2 to 3, characterized in that: Also includes: The support member (600) is used to be sleeved on the outer tube (10), the first end (610) of the support member (600) abuts against the fixing member (100), and the second end (620) of the support member (600) is inserted into the sleeve (300).

8. The leg support device according to claim 7, characterized in that: The support member (600) is provided with a plurality of avoidance grooves (630), and the avoidance grooves (630) are used to avoid the wear-resistant pad (200).

9. The leg support device according to claim 7, characterized in that: The support member (600) is provided with a third inclined surface (640) that matches the first inclined surface (311), and a portion of the third inclined surface (640) abuts against the first inclined surface (311).

10. A backhoe loader, characterized in that: The utility model comprises an excavator loader body and a support leg device according to any one of claims 1 to 9 arranged on the excavator loader body.

Images