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, a plurality of wear-resisting pads, a plurality of driving pieces and a plurality of limiting pieces, the wear-resisting pads are used for being arranged in mounting holes of the outer pipe, and part of the wear-resisting pads extend out of the mounting holes. The sleeve is used for being arranged on the outer pipe in a sleeving mode, and a plurality of inserting grooves and a plurality of inserting holes are formed in the sleeve. And the driving piece is correspondingly inserted into the insertion hole and moves relative to the sleeve so as to push the extending wear-resisting pad to move towards the inner pipe. The limiting piece is correspondingly inserted into the inserting groove and is correspondingly connected with the driving piece in a clamped mode so that the driving piece can be kept at the current position. According to the supporting leg device and the backhoe loader, the gap between the abrasion-resistant pad and the inner pipe is reduced, abrasion of the abrasion-resistant pad is compensated, the frequency of replacing the abrasion-resistant 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 legs are needed to support the vehicle body so that the tires are away from the support surface, thereby avoiding the impact on the tires during the digging process. The support leg generally adopts the telescopic structure composed of the inner and outer 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 gap between the wear-resistant pad and the inner tube, compensates the wear of the wear-resistant pad, reduces the frequency of replacing the wear-resistant pad, and is convenient to operate.

[0006] In a first aspect, the present application provides a support leg device, comprising: a plurality of wear-resistant pads arranged in the mounting hole of the outer tube, and part of the wear-resistant pads extending out of the mounting hole.

[0007] A sleeve is arranged on the outer tube, and the sleeve has a plurality of insertion slots and a plurality of insertion holes.

[0008] A plurality of driving members are correspondingly inserted into the insertion holes, and the driving members move relative to the sleeve to push the extending wear-resistant pads to move towards the inner tube.

[0009] A plurality of limiting members are correspondingly inserted into the insertion slots, and the limiting members are correspondingly clamped with the driving members to keep the driving members at the current position.

[0010] In a possible implementation manner, the support leg device provided by the present application has an insertion part on the limiting member, and the limiting member is inserted into the insertion slot through the insertion part. The insertion part is abutted between the sleeve and the outer tube.

[0011] In a possible implementation manner, the support leg device provided by the present application further comprises a plurality of connecting members. At least one connecting part is arranged on the limiting member, the sleeve has a plurality of first connecting holes, and the connecting members are correspondingly inserted into the connecting parts and connected with the sleeve through the first connecting holes.

[0012] In a possible implementation, the outrigger device provided in the application further comprises an elastic member sleeved on the connecting member, two ends of the elastic member being in abutment with the connecting member and the limiting member respectively.

[0013] In a possible implementation, the outrigger device provided in the application, the edge of the insertion hole has a first spiral part, the driving member is provided with a second spiral part matched with the first spiral part, the first spiral part and the second spiral part are screwed with each other, and the second spiral part rotates along its own axis relative to the first spiral part to move the driving member relative to the sleeve.

[0014] In a possible implementation, the outrigger device provided in the application, the insertion part has a clamping surface, and the second spiral part rotates along its own axis relative to the clamping surface to make the clamping surface clamped with or separated from the part of the second spiral part.

[0015] In a possible implementation, the outrigger device provided in the application, the outer circumferential side of the second spiral part is provided with a plurality of first teeth, and the clamping surface has a plurality of second teeth matched with the first teeth.

[0016] In a possible implementation, the outrigger device provided in the application, the driving member has an observation hole, the extension direction of the observation hole is consistent with the extension direction of the driving member, and the observation hole is used to observe the position of the wear-resistant pad.

[0017] In a possible implementation, the outrigger device provided in the application further comprises a fastener, the sleeve has at least one second connecting hole, the fastener is inserted on the second connecting hole, and the fastener is used to connect with the outer pipe.

[0018] In a second aspect, the application further provides a backhoe loader, comprising a backhoe loader body and the outrigger device provided in the first aspect.

[0019] The application provides an outrigger device and a backhoe loader, the outrigger device is provided with a sleeve, a plurality of wear-resistant pads, a plurality of driving members and a plurality of limiting members, the wear-resistant pad is used to be arranged in the mounting hole of the outer pipe to reduce the friction between the inner pipe and the outer pipe, and part of the wear-resistant pad extends out of the mounting hole. The sleeve is used to be sleeved on the outer pipe, the sleeve has a plurality of insertion slots and a plurality of insertion holes, the driving member is correspondingly inserted in the insertion hole, and the limiting member is correspondingly inserted in the insertion slot.

[0020] After the wear pad wears, the driver moves relative to the sleeve so that the driver contacts the extended wear pad, pushing the wear pad toward the inner tube. The driver stops moving until the wear pad contacts the inner tube, and the stopper engages the driver to maintain its current position, preventing it from retracting. This ensures the wear pad remains stable after adjustment and improves the reliability of the outrigger assembly. The outrigger assembly and backhoe loader provided in this application reduce the gap between the wear pad and the inner tube, compensate for wear on the wear pad, reduce the frequency of wear pad replacement, and facilitate operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic structural diagram of a leg support device provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the middle sleeve;

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the middle limiter;

[0026] Figure 5 for Figure 1 Schematic diagram of the structure of the middle driving component;

[0027] Figure 6 A diagram illustrating the use status of the leg device provided in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 10-outer tube; 11-mounting hole; 20-inner tube;

[0030] 100-wear-resistant pad;

[0031] 200-sleeve;

[0032] 210 - slot; 220 - jack; 221 - first spiral portion; 230 - first connecting hole; 240 - second connecting hole;

[0033] 300 - driving member; 310 - second spiral part; 311 - first tooth; 320 - observation hole;

[0034] 400 - limiting member;

[0035] 410 - plug-in part; 411 - clamping surface; 4111 - second tooth; 420 - connecting part;

[0036] 500 - connecting member;

[0037] 600 - elastic member;

[0038] 700 - fastener.

[0039] The specific embodiments of the present application have been shown through the above-described drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to limit the scope of the present application in any manner, but to explain the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] First of all, those skilled in the art should understand that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0041] Secondly, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between 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.

[0042] Then, it should also be noted 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 used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] 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.

[0044] As shown in the background technology, in the prior art, a mounting hole is opened on the outer tube, and the wear-resistant pad is placed into the outer tube through the mounting hole. The wear-resistant pad abuts between the outer tube and the inner tube. The wear-resistant pad will wear out due to long-term use, resulting in a gap between the wear-resistant pad and the inner tube, so the wear-resistant pad needs to be replaced.

[0045] However, frequent replacement of the wear pads is troublesome.

[0046] Based on this, the present application provides an outrigger device and backhoe loader. The outrigger device comprises a sleeve, multiple wear-resistant pads, multiple driving members, and multiple limiting members. The wear-resistant pads are positioned within the mounting holes of the outer tube to reduce friction between the inner and outer tubes, with portions of the wear-resistant pads extending beyond the mounting holes. The sleeve is configured to fit over the outer tube and has multiple slots and multiple insertion holes. The driving members are correspondingly inserted into the insertion holes, and the limiting members are correspondingly inserted into the slots.

[0047] After the wear pad wears, the driver moves relative to the sleeve so that the driver contacts the extended wear pad, pushing the wear pad toward the inner tube. The driver stops moving until the wear pad contacts the inner tube, and the stopper engages the driver to maintain its current position, preventing it from retracting. This ensures the wear pad remains stable after adjustment and improves the reliability of the outrigger assembly. The outrigger assembly and backhoe loader provided in this application reduce the gap between the wear pad and the inner tube, compensate for wear on the wear pad, reduce the frequency of wear pad replacement, and facilitate operation.

[0048] In order to make the purpose, 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 in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0049] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, the support leg device provided in the present application includes: a plurality of wear-resistant pads 100 for being arranged in the mounting holes 11 of the outer tube 10 , and some of the wear-resistant pads 100 extend out of the mounting holes 11 .

[0050] A sleeve 200 is provided on the outer tube 10, and the sleeve 200 is provided with a plurality of slots 210 and a plurality of insertion holes 220.

[0051] A plurality of driving members 300 are inserted into the insertion holes 220, and the driving members 300 are moved relative to the sleeve 200 to push the protruding wear-resistant pad 100 towards the inner tube 20.

[0052] A plurality of limiting members 400 are inserted into the slots 210, and the limiting members 400 are correspondingly clamped with the driving members 300 to keep the driving members 300 in the current position.

[0053] It should be noted that the support 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.

[0054] It can be understood that the wear-resistant pad 100 can reduce the friction between the inner tube 20 and the outer tube 10, protect the tube wall, and prolong the service life of the outer tube 10 and the inner tube 20. The wear-resistant pad 100 is arranged in the mounting hole 11 of the outer tube 10, and part of the wear-resistant pad 100 protrudes from the mounting hole 11 to contact the driving member 300. It should be noted that the mounting hole 11 is located on the side wall of the outer tube 10, and when the outer tube 10 is a square tube, the four side surfaces of the outer tube 10 all have the mounting hole 11.

[0055] It should also be noted that the sleeve 200 is sleeved on the outer tube 10, which can improve the strength of the outer tube 10 and reduce the possibility of deformation or tearing of the outer tube 10 under external force.

[0056] The sleeve 200 is provided with a plurality of slots 210 and a plurality of insertion holes 220, and the insertion holes 220 provide insertion positions for the driving members 300, and the slots 210 are used to install the limiting members 400. In specific implementation, the insertion holes 220 can be arranged in the slots 210, so that the limiting members 400 can be more effectively clamped with the driving members 300. Exemplarily, the number of the slots 210 and the insertion holes 220 can both be four, and the four slots 210 are arranged on different sides of the sleeve 200, and the four insertion holes 220 are also arranged on different sides of the sleeve 200.

[0057] Specifically, after the wear-resistant pad 100 is worn, the driving member 300 can be moved relative to the sleeve 200 to move the driving member 300 towards the wear-resistant pad 100 (i.e. Figure 6 the X direction shown by the arrow in the middle) at the same time, the limiting member 400 is driven by the driving member 300 to move along the Y direction shown by the arrow in the left side of the figure. Figure 6The positive direction movement of Y indicated by the middle arrow disengages the driving member 300 from the limiting member 400. The driving member 300 moves towards the wear-resistant pad 100 to abut the driving member 300 with the extended wear-resistant pad 100 to push the wear-resistant pad 100 to move towards the inner tube 20 to reduce the gap between the wear-resistant pad 100 and the inner tube 20.

[0058] Until the wear-resistant pad 100 abuts the inner tube 20, the driving member 300 stops moving, and the limiting member 400 is engaged with the driving member 300 to keep the driving member 300 in the current position to prevent the driving member 300 from retreating. Figure 6 The negative direction movement of Y indicated by the middle arrow engages the limiting member 400 with the driving member 300 to keep the driving member 300 in the current position to prevent the driving member 300 from retreating.

[0059] It can be understood that, compared with the prior art, the wear-resistant pad 100 is often replaced, which is troublesome. In the embodiment, the leg device is provided with a sleeve 200, a plurality of wear-resistant pads 100, a plurality of driving members 300, and a plurality of limiting members 400. The wear-resistant pad 100 is arranged in the mounting hole 11 of the outer tube 10 to reduce the friction between the inner tube 20 and the outer tube 10, and part of the wear-resistant pad 100 extends out of the mounting hole 11. The sleeve 200 is sleeved on the outer tube 10, and the sleeve 200 has a plurality of insertion slots 210 and a plurality of insertion holes 220. The driving member 300 is correspondingly inserted into the insertion hole 220, and the limiting member 400 is correspondingly inserted into the insertion slot 210. After the wear-resistant pad 100 is worn, the driving member 300 moves relative to the sleeve 200 to abut the driving member 300 with the extended wear-resistant pad 100 to push the wear-resistant pad 100 to move towards the inner tube 20 to reduce the gap between the wear-resistant pad 100 and the inner tube 20. Until the wear-resistant pad 100 abuts the inner tube 20, the driving member 300 stops moving, and the limiting member 400 is engaged with the driving member 300 to keep the driving member 300 in the current position to prevent the driving member 300 from retreating, ensuring that the adjusted state of the wear-resistant pad 100 remains stable and improving the reliability of the leg device. Thus, the leg device provided by the present application reduces the gap between the wear-resistant pad 100 and the inner tube 20, compensates for the wear of the wear-resistant pad 100, reduces the frequency of replacing the wear-resistant pad 100, and is easy to operate.

[0060] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 6 , the limiting member 400 has an insertion portion 410, and the limiting member 400 is inserted into the insertion slot 210 through the insertion portion 410. The insertion portion 410 abuts between the sleeve 200 and the outer tube 10.

[0061] It can be understood that the limiting member 400 is inserted into the insertion slot 210 of the sleeve 200 through the insertion portion 410, which realizes the connection between the limiting member 400 and the sleeve 200, is easy to operate, and makes the installation and disassembly of the limiting member 400 simple and fast.

[0062] It should be noted that the plug-in part 410 is abutted between the sleeve 200 and the outer tube 10, which ensures that the limiting part 400 is kept stable in the insertion slot 210, and prevents the limiting part 400 from being displaced in the horizontal direction (i.e. the X direction shown by the arrow in the middle) Figure 6 Figure 6 The limiting part 400 can only move in the vertical direction (i.e. the positive direction of Y or the reverse direction of Y shown by the arrow in the middle)

[0063] Specifically, when the limiting part 400 moves in the positive direction of Y, the limiting part 400 is disengaged from the driving part 300, so that the driving part 300 can move relative to the sleeve 200; when the limiting part 400 moves in the reverse direction of Y, the limiting part 400 is engaged with the driving part 300, so that the limiting part 400 fixes the driving part 300, so that the driving part 300 remains in the current position.

[0064] In some embodiments, referring to Figures 2 to 4 The leg supporting device further comprises a plurality of connecting parts 500, the limiting part 400 is provided with at least one connecting part 420, the sleeve 200 is provided with a plurality of first connecting holes 230, and the connecting part 500 is correspondingly inserted on the connecting part 420 and connected with the sleeve 200 through the first connecting hole 230.

[0065] The limiting part 400 is provided with at least one connecting part 420, and the number of the connecting part 420 can be one, two or more than two, which is not limited in the embodiments of the application.

[0066] It should be noted that the connecting part 500 fixes the limiting part 400 on the sleeve 200 through the connecting part 420 and the first connecting hole 230, which can further enhance the stability of the limiting part 400 to prevent the limiting part 400 from falling off, thereby improving the reliability and safety of the leg supporting device.

[0067] In specific implementation, the connecting part 500 can be a bolt, the connecting part 420 can be provided with a through hole, and the first connecting hole 230 can be a threaded hole, so that the bolt can pass through the through hole on the connecting part 420 and be connected with the threaded hole on the sleeve 200 through the thread.

[0068] In some embodiments, referring to Figure 2 The leg supporting device further comprises an elastic part 600 sleeved on the connecting part 500, and the two ends of the elastic part 600 are respectively abutted with the connecting part 500 and the limiting part 400.

[0069] Exemplarily, the elastic part 600 can be a spring or other parts, which is not limited in the embodiments of the application. ​

[0070] It can be understood that the elastic member 600 can produce elastic deformation, thereby being able to provide a certain elastic displacement to enable the limiting member 400 to move up and down within a certain range.

[0071] Specifically, when the driving member 300 moves relative to the sleeve 200, the driving member 300 exerts a force on the limiting member 400 to enable the limiting member 400 to move along the positive direction of Y indicated by the arrow in the middle, thereby the limiting member 400 extrudes the elastic member 600, and the elastic member 600 tightens. Figure 6 When the driving member 300 stops moving, the elastic member 600 relaxes, and the limiting member 400 moves along the reverse direction of Y indicated by the arrow in the middle under the action of the elastic member 600, so as to enable the limiting member 400 to be clamped with the driving member 300, thereby fixing the driving member 300 and preventing the driving member 300 from retreating. Figure 6

[0072] In some embodiments, as shown in Figure 3 and Figure 5 , the edge of the insertion hole 220 has a first spiral part 221, and the driving member 300 is provided with a second spiral part 310 matched with the first spiral part 221, the first spiral part 221 and the second spiral part 310 are mutually screwed, and the second spiral part 310 rotates along its own axis relative to the first spiral part 221 to enable the driving member 300 to move relative to the sleeve 200.

[0073] It should be noted that the first spiral part 221 and the second spiral part 310 are mutually screwed to enable the driving member 300 to perform accurate linear movement relative to the sleeve 200 by rotating along its own axis, thereby being able to accurately adjust the position of the wear-resistant pad 100 to compensate for the gap change caused by the wear of the wear-resistant pad 100 or other factors. Through simple rotation operation, the movement of the driving member 300 and the wear-resistant pad 100 can be realized, which is convenient to operate and improves work efficiency.

[0074] In some embodiments, as shown in Figure 4 and Figure 5 , the insertion part 410 has a clamping surface 411, and the second spiral part 310 rotates along its own axis relative to the clamping surface 411 to enable the clamping surface 411 to be clamped with or separated from part of the second spiral part 310.

[0075] Specifically, by providing the clamping surface 411 on the insertion part 410, the insertion part 410 is provided with a clamping position to realize the clamping of the insertion part 410 with the second spiral part 310.

[0076] ​It can be understood that the clamping surface 411 is clamped with the second spiral part 310, which can prevent the second spiral part 310 from rotating relative to the first spiral part 221 along its own axis, thereby limiting the position of the driving member 300 and preventing the driving member 300 from rotating in the opposite direction after adjusting the wear-resistant pad 100, thereby improving the reliability of the device.

[0077] In some embodiments, referring to Figure 4 and Figure 5 , the outer circumferential side of the second spiral part 310 is provided with a plurality of first teeth 311, and the clamping surface 411 has a plurality of second teeth 4111 matched with the first teeth 311.

[0078] It should be noted that by providing the first teeth 311 and the second teeth 4111, the driving member 300 is free to rotate in one direction and is limited in the opposite direction, so that one-way rotation control can prevent the driving member 300 from rotating in the opposite direction after adjusting the wear-resistant pad 100, thereby ensuring that the state of the wear-resistant pad 100 after adjustment remains stable.

[0079] Specifically, when the driving member 300 adjusts the wear-resistant pad 100 to the right position, the first teeth 311 and the second teeth 4111 are engaged with each other, which can prevent the driving member 300 from backtracking, thereby improving the reliability and safety of the leg device.

[0080] In some embodiments, referring to Figure 5 and Figure 6 , the driving member 300 has an observation hole 320, the extension direction of the observation hole 320 is consistent with the extension direction of the driving member 300, and the observation hole 320 is used to observe the position of the wear-resistant pad 100.

[0081] It can be understood that by providing the observation hole 320, the wear of the wear-resistant pad 100 can be directly observed, and the wear amount can be compensated in time.

[0082] It should be noted that the operator can also more accurately control the rotation angle of the driving member 300 through the observation hole 320 to avoid excessive or insufficient adjustment of the wear-resistant pad 100, so as to ensure that the wear-resistant pad 100 is in a better state of contact with the inner tube 20.

[0083] In specific implementation, the observation hole 320 can be an internal hexagonal hole, which is matched with a hexagonal wrench to provide rotation power for the driving member 300.

[0084] In some embodiments, referring to Figure 1 , Figure 3 and Figure 6 , the leg device further comprises a fastener 700, the sleeve 200 has at least one second connecting hole 240, and the fastener 700 is inserted into the second connecting hole 240, and the fastener 700 is used to connect with the outer tube 10.

[0085] Specifically, the fastener 700 fastens the sleeve 200 and the outer pipe 10 through the second connecting hole 240, increases the structural stability of the whole support leg device, enables the sleeve 200 to bear larger load and external force, prevents the sleeve 200 from falling off, and improves the safety.

[0086] It should be noted that the fastener 700 can be a pin shaft, a bolt, or other components, and the embodiments of the present application do not make too many limitations thereon.

[0087] The present application also provides a backhoe loader, which comprises a backhoe loader body and a support leg device arranged on the backhoe loader body.

[0088] 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.

[0089] As understood by those skilled in the art, the support leg device and the backhoe loader provided by the present application are characterized in that the sleeve 200, the plurality of wear pads 100, the plurality of driving members 300, and the plurality of limiting members 400 are arranged, the wear pad 100 is arranged in the mounting hole 11 of the outer pipe 10 to reduce the friction between the inner pipe 20 and the outer pipe 10, and part of the wear pad 100 extends out of the mounting hole 11. The sleeve 200 is arranged on the outer pipe 10, the sleeve 200 is provided with a plurality of insertion grooves 210 and a plurality of insertion holes 220, the driving member 300 is correspondingly inserted into the insertion hole 220, and the limiting member 400 is correspondingly inserted into the insertion groove 210.

[0090] After the wear pad 100 is worn, the driving member 300 moves relative to the sleeve 200, so that the driving member 300 abuts against the extended wear pad 100 to push the wear pad 100 to move towards the inner pipe 20. Until the wear pad 100 abuts against the inner pipe 20, the driving member 300 stops moving, the limiting member 400 is correspondingly clamped with the driving member 300, so that the driving member 300 is kept at the current position, the driving member 300 is prevented from backtracking, the adjusted state of the wear pad 100 is kept stable, and the reliability of the support leg device is improved. The support leg device and the backhoe loader provided by the present application reduce the gap between the wear pad 100 and the inner pipe 20, compensate for the wear of the wear pad 100, reduce the frequency of replacing the wear pad 100, and are convenient to operate.

[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 mean 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 it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those 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: A plurality of wear-resistant pads (100) for being arranged in the mounting hole (11) of the outer tube (10), with some of the wear-resistant pads (100) extending out of the mounting hole (11); A sleeve (200) is used for being sleeved on the outer tube (10), and the sleeve (200) has a plurality of slots (210) and a plurality of jacks (220); A plurality of driving members (300) are correspondingly inserted into the insertion holes (220), and the driving members (300) move relative to the sleeve (200) to push the extended wear-resistant pad (100) to move toward the inner tube (20); A plurality of limiting members (400) are correspondingly inserted into the slots (210), and the limiting members (400) are correspondingly engaged with the driving member (300) to keep the driving member (300) at a current position.

2. The leg support device according to claim 1, characterized in that: The limiting member (400) has an inserting portion (410), and the limiting member (400) is inserted into the slot (210) through the inserting portion (410), and the inserting portion (410) abuts between the sleeve (200) and the outer tube (10).

3. The leg support device according to claim 2, characterized in that: Also includes: A plurality of connecting members (500), the limiting member (400) is provided with at least one connecting portion (420), the sleeve (200) is provided with a plurality of first connecting holes (230), the connecting members (500) are correspondingly inserted into the connecting portions (420), and the connecting members (500) are connected to the sleeve (200) via the first connecting holes (230).

4. The leg support device according to claim 3, characterized in that: Also includes: The elastic member (600) is sleeved on the connecting member (500), and two ends of the elastic member (600) are respectively in contact with the connecting member (500) and the limiting member (400).

5. The leg support device according to any one of claims 2 to 4, characterized in that: The edge of the insertion hole (220) has a first spiral portion (221), and the driving member (300) is provided with a second spiral portion (310) matching the first spiral portion (221). The first spiral portion (221) and the second spiral portion (310) are screwed together, and the second spiral portion (310) rotates along its own axis relative to the first spiral portion (221), so that the driving member (300) moves relative to the sleeve (200).

6. The leg support device according to claim 5, characterized in that: The plug-in portion (410) has a snap-fit ​​surface (411), and the second spiral portion (310) rotates along its own axis relative to the snap-fit ​​surface (411), so that the snap-fit ​​surface (411) and a portion of the second spiral portion (310) are snap-fitted or snap-disengaged.

7. The leg support device according to claim 6, characterized in that: A plurality of first teeth (311) are provided on the outer peripheral side of the second spiral portion (310), and a plurality of second teeth (4111) matching the first teeth (311) are provided on the engaging surface (411).

8. The leg support device according to any one of claims 1 to 4, characterized in that: The driving member (300) is provided with an observation hole (320), the extension direction of the observation hole (320) being consistent with the extension direction of the driving member (300), and the observation hole (320) is used to observe the position of the wear-resistant pad (100).

9. The leg support device according to any one of claims 1 to 4, characterized in that: It also includes a fastener (700), the sleeve (200) has at least one second connection hole (240), the fastener (700) is inserted into the second connection hole (240), and the fastener (700) is used to connect to the outer tube (10).

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.

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