Pedal assembly and operation machine

Abstract

The utility model relates to the technical field of operation machinery, and provides a pedal assembly and operation machinery, and the pedal assembly comprises a pedal part and a limiting part; the pedal component comprises a pedal body and a two-way foot valve, the pedal body is arranged on the two-way foot valve, and a locking piece is arranged on the pedal body. The limiting component comprises a limiting base and an adjusting component, and the adjusting component is rotatably arranged on the limiting base and suitable for being switched among a first position, a second position and a third position. In the first position, the adjusting component fixes the locking piece to the limiting base, so that the pedal body is in a locking state. And at the second position, the adjusting part is located on the movement path of the locking piece and used for limiting the locking piece, so that the pedal main body is in a one-way control state. And at the third position, the adjusting part avoids the locking piece, so that the pedal main body is in a bidirectional control state. The pedal assembly is simple in structure, low in manufacturing cost, easy and convenient to operate and capable of meeting the requirement for operation mode replacement of various accessories of operation machinery.

Description

Technical Field

[0001] This utility model relates to the field of work machinery technology, and in particular to a pedal assembly and work machinery. Background Technology

[0002] Construction machinery, such as hydraulic excavators, uses bucket attachments and is further equipped with other attachments such as hydraulic breakers, hydraulic shears, and pile drivers to meet the needs of different working conditions. Different attachments require different operating methods.

[0003] In related technologies, each attachment corresponds to a specific operating switch. When multiple operating switches are provided for different attachments, the piping layout of the operating switches becomes complex, making installation and operation very inconvenient. Therefore, this utility model provides a pedal assembly. Utility Model Content

[0004] The first aspect of this utility model provides a pedal assembly to solve the above-mentioned technical defects in the prior art. The pedal assembly has a simple structure, low manufacturing cost, easy operation, and high reliability. It can meet the operation modes of various attachments of working machinery and facilitates quick changes in operation modes.

[0005] The second aspect of this utility model provides a working machine.

[0006] The first aspect of this utility model provides a pedal assembly, including a pedal component and a limiting component.

[0007] The pedal assembly includes a pedal body and a two-way foot valve. The two-way foot valve is adapted to be installed on the cab floor. The pedal body is located on the two-way foot valve and is used to control the fluid flow of the two-way foot valve. The pedal body is provided with a locking element.

[0008] The limiting component includes a limiting base and an adjusting component. The limiting base is adapted to be installed on the cab floor, and the adjusting component is rotatably disposed on the limiting base and adapted to switch between a first position, a second position, and a third position.

[0009] In the first position, the adjusting component fixes the locking member to the limiting base, so that the pedal body is in a locked state.

[0010] In the second position, the adjusting component is located on the movement path of the locking member, and is used to limit the locking member so that the pedal body is in a one-way control state.

[0011] In the third position, the adjusting component avoids the locking component, so that the pedal body is in a bidirectional control state.

[0012] According to the pedal assembly provided by this utility model, the adjusting component is an adjusting base, and the adjusting base is provided with an adjusting body and a limiting shaft spaced apart.

[0013] The limiting base is provided with positioning holes, a first limiting hole, a second limiting hole and a third limiting hole at intervals. The first limiting hole, the second limiting hole and the third limiting hole are all located on a preset pitch circle. The preset pitch circle is centered on the center of the positioning hole and has a radius of distance between the center of the positioning hole and the center of the first limiting hole, the second limiting hole or the third limiting hole.

[0014] The distance between the adjusting body and the limiting shaft is equal to the radius of the preset pitch circle. The adjusting body is rotatably disposed in the positioning hole, and the limiting shaft is adapted to switch between each limiting hole to achieve the corresponding position switching.

[0015] According to the pedal assembly provided by this utility model, the adjustment body includes:

[0016] An adjusting shaft is rotatably disposed in the positioning hole;

[0017] Fastener, threadedly connected to one end of the adjusting shaft away from the adjusting base;

[0018] An elastic element is sleeved on the adjusting shaft, with one end of the elastic element abutting the limiting base and the other end of the elastic element abutting the fastener.

[0019] According to the pedal assembly provided by this utility model, the adjusting body further includes a blocking member, which is sleeved on the adjusting shaft and located between the elastic member and the fastener. The diameter of the blocking member is larger than the diameter of the elastic member, and the other end of the elastic member abuts against the blocking member.

[0020] According to the pedal assembly provided by this utility model, the adjusting body further includes a sleeve, which is sleeved on the outside of the adjusting shaft and located between the limiting base and the blocking member, and the elastic member is sleeved on the sleeve.

[0021] According to the pedal assembly provided by this utility model, the adjustment body further includes a trigger member, which is located at one end of the adjustment shaft away from the fastener, or the trigger member is located on the adjustment base and at the position of the adjustment shaft.

[0022] According to the pedal assembly provided by this utility model, the limiting base includes a mounting part and a limiting part, the mounting part and the limiting part are perpendicular to each other, and the mounting part is adapted to be installed on the cab floor.

[0023] The positioning hole, the first limiting hole, the second limiting hole, and the third limiting hole are all provided on the limiting part.

[0024] According to the pedal assembly provided by this utility model, the locking member has a first end and a second end that are disposed opposite to each other, with a certain length extending between the first end and the second end. The first end is detachably connected to the pedal body, and the second end is adapted to cooperate with the adjusting component accordingly.

[0025] According to the pedal assembly provided by this utility model, the second end is provided with a locking hole and a limiting groove, and the distance between the center of the locking hole and the center of the limiting groove is equal to the length of the center line of the first limiting hole and the second limiting hole;

[0026] In the first position, the limiting shaft passes through the first limiting hole and the locking hole in sequence, so that the pedal body is in a locked state;

[0027] In the second position, the limiting shaft is adapted to engage with the limiting groove to limit the locking member, so that the pedal body is in a one-way control state.

[0028] A second aspect of this utility model provides a working machine, including a cab and a pedal assembly as described in any one of the claims, the pedal assembly being disposed in the cab.

[0029] The pedal assembly provided by this utility model features a locking element on the pedal body, a limiting base in front of the two-way foot valve, and an adjusting component rotatably mounted on the limiting base. This allows the adjusting component to switch between a first position, a second position, and a third position, enabling the pedal body to operate in three states: locked, unidirectional control, and bidirectional control. This satisfies the operational needs of various attachments on machinery and facilitates quick changes in operating modes. Furthermore, the pedal assembly provided by this utility model has a simple structure, low manufacturing cost, easy operation, and high reliability.

[0030] The working machinery provided by this utility model includes the aforementioned pedal assembly, and therefore possesses all the advantages of the aforementioned pedal assembly, enabling the working machinery to operate in an orderly manner under different attachment conditions. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the 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.

[0032] Figure 1 This is a schematic diagram of the pedal assembly provided in an embodiment of the present invention.

[0033] Figure 2 This is an exploded view of the pedal assembly provided in an embodiment of the present invention.

[0034] Figure 3 This is a side view of the limiting base in the pedal assembly provided in this embodiment of the utility model.

[0035] Figure 4 This is a side view of the adjusting component in the pedal assembly provided in this embodiment of the utility model.

[0036] Figure 5 This is a side view of the locking element in the pedal assembly provided in this embodiment of the utility model.

[0037] Figure 6 This is a schematic diagram of the adjustment component in the first position of the pedal assembly provided in this embodiment of the utility model.

[0038] Figure 7 This is one of the structural schematic diagrams of the adjusting component in the second position of the pedal assembly provided in this utility model embodiment.

[0039] Figure 8 This is the second schematic diagram of the adjustment component in the second position of the pedal assembly provided in this embodiment of the utility model.

[0040] Figure 9 This is one of the structural schematic diagrams of the adjusting component in the third position of the pedal assembly provided in this utility model embodiment.

[0041] Figure 10 This is the second schematic diagram of the adjustment component in the third position of the pedal assembly provided in this embodiment of the utility model.

[0042] Figure 11 This is the third schematic diagram of the adjustment component in the third position of the pedal assembly provided in this embodiment of the utility model.

[0043] Figure label:

[0044] 10. Pedal assembly; 11. Pedal body; 12. Two-way foot valve; 13. Locking element; 131. Locking hole; 132. Limiting groove;

[0045] 20. Limiting component; 21. Limiting base; 211. Positioning hole; 212. First limiting hole; 213. Second limiting hole; 214. Third limiting hole; 215. Mounting part; 216. Limiting part; 22. Adjusting component; 221. Adjusting base; 2211. First mounting hole; 2212. Second mounting hole; 222. Adjusting body; 2221. Adjusting shaft; 2222. Fastener; 2223. Elastic element; 2224. Blocking element; 2225. Sleeve; 2226. Trigger element; 223. Limiting shaft;

[0046] 30. Cab floor. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions 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.

[0048] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0049] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Figure 1 This is a schematic diagram of the pedal assembly provided in an embodiment of the present invention. Figure 2 This is an exploded view of the pedal assembly provided in an embodiment of the present invention.

[0052] See Figure 1 and Figure 2 This utility model provides a pedal assembly for use in work machinery that can be equipped with multiple attachments, such as hydraulic excavators. The pedal assembly includes a pedal component 10 and a limiting component 20.

[0053] The pedal assembly 10 includes a pedal body 11 and a two-way foot valve 12. The two-way foot valve 12 is a two-way pilot-operated foot valve, located on the cab floor 30, with the pedal body 11 mounted on it. By pressing or releasing the pedal body 11, the two-way foot valve 12 enables bidirectional fluid control. When the pedal body 11 is pressed, the valve disc moves away from the valve seat, allowing fluid to flow through the valve; when the pedal body 11 is released, the valve disc adheres to the valve seat, preventing fluid from passing through the valve. A linkage-shaped locking element 13 is detachably connected to the bottom of the pedal body 11 to cooperate with the limiting component 20 to achieve locking and limiting functions.

[0054] The limiting component 20 includes a limiting base 21 and an adjusting component 22. The limiting base 21 can also be installed on the cab floor 30 and is located in front of the two-way foot valve 12. The adjusting component 22 is rotatably mounted on the limiting base 21 and is suitable for switching between multiple limiting positions so that the pedal body 11 can be used in different states. The multiple limiting positions are determined according to the attachments used on the operating machinery.

[0055] For example, when the working machinery, such as the hydraulic excavator, can use attachments such as buckets, breakers, hydraulic shears, and pile drivers, the adjusting component 22 is adapted to switch between the first position, the second position, and the third position so that the pedal body 11 can be used in three operating states, namely, the pedal body 11 is in the locked state, the one-way control state, and the two-way control state.

[0056] When the adjusting component 22 is in the first position, it fixes the locking component 13 to the limiting base 21, thus locking the pedal body 11. At this time, even applying a stepping force will not allow the pedal body 11 to move; in other words, the pedal body 11 is locked and cannot be stepped on forward or backward, effectively preventing risks from accidental operation. In this state, the hydraulic excavator can use the bucket for operation, meaning the breaker, hydraulic shears, and piling structure are not in operation.

[0057] When the adjusting component 22 is in the second position, it is positioned on the movement path of the locking component 13, thus limiting the locking component 13 and placing the pedal body 11 in a one-way control state. At this time, applying a stepping force causes the pedal body 11 to move in one direction, such as stepping forward, to trigger the two-way foot valve 12. Essentially, the pedal body 11 can be stepped on in one direction. In this state, the hydraulic excavator can use a breaker hammer, but the direction of movement of the pedal body 11 needs to be restricted so that it can only be stepped forward and not backward, preventing accidental operation (stepping backward) that could damage attachments or other risks.

[0058] When the adjusting component 22 is in the third position, it avoids the locking component 13 and does not interfere with its movement. The pedal body 11 is in a bidirectional control state. At this time, applying a pedal force causes the pedal body 11 to move in opposite directions, such as forward or backward, triggering the bidirectional foot valve 12. In this state, the hydraulic excavator can use hydraulic shears for operation, and the direction of movement of the pedal body 11 is unrestricted; the pedal body 11 can be pressed forward or backward.

[0059] It is understood that the pedal assembly provided in this embodiment of the present invention, by providing a locking member 13 on the pedal body 11 of the pedal component 10, providing a limiting base 21 in front of the bidirectional foot valve 12, and rotatably providing an adjusting member 22 on the limiting base 21, allows the adjusting member 22 to switch between a first position, a second position, and a third position, thereby enabling the pedal body 11 to be used in three operating states: a locked state, a one-way control state, and a two-way control state. This satisfies the operating modes of various attachments of the working machinery and facilitates quick changes in operating modes. Furthermore, the pedal assembly provided in this embodiment of the present invention has a simple structure, low manufacturing cost, relatively simple operation, and high reliability.

[0060] Figure 3 This is a side view of the limiting base 21 in the pedal assembly provided in this embodiment of the utility model. Figure 4 This is a side view of the adjusting component 22 in the pedal assembly provided in this embodiment of the utility model.

[0061] Continue reading Figure 2 And see also Figure 3 and Figure 4 In some embodiments of this utility model, the adjusting component 22 includes a plate-shaped adjusting base 221. The adjusting base 221 is provided with an adjusting body 222 and a limiting shaft 223 spaced apart. The limiting shaft 223 is a structure such as a pin and can play a positioning role. The limiting shaft 223 can be integrally formed with the adjusting base 221 or it can be separately formed from the adjusting base 221 and assembled by an interference fit.

[0062] The limiting base 21 is provided with positioning holes 211, first limiting holes 212, second limiting holes 213 and third limiting holes 214 at intervals. The first limiting holes 212, second limiting holes 213 and third limiting holes 214 are all located on a preset indexing circle R. The preset indexing circle R is centered on the center of the positioning hole 211 and has a radius r of the distance between the center of the positioning hole 211 and the center of the first limiting hole 212, second limiting hole 213 or third limiting hole 214.

[0063] The distance b between the adjusting body 222 and the limiting shaft 223 is equal to the radius r of the preset pitch circle R. That is, the distance b between the adjusting body 222 and the limiting shaft 223 is equal to the distance between the center of the positioning hole 211 and the center of the first limiting hole 212, the second limiting hole 213, or the third limiting hole 214, respectively. The adjusting body 222 is rotatably mounted in the positioning hole 211, and the limiting shaft 223 is adapted to switch between the first limiting hole 212, the second limiting hole 213, and the third limiting hole 214 to achieve corresponding position switching.

[0064] When the adjusting component 22 is in the first position, the limiting shaft 223 passes through the first limiting hole 212 and the locking member 13 to position the locking member 13 on the limiting base 21, so that the pedal body 11 is in the locked state.

[0065] When the adjusting component 22 is in the second position, the limiting shaft 223 passes through the second limiting hole 213 and extends out from the second limiting hole 213, and is located on the movement path of the locking component 13, which can limit the locking component 13 and put the pedal body 11 in a one-way control state.

[0066] When the adjusting component 22 is in the third position, the limiting shaft 223 passes through the third limiting hole 214. The limiting shaft 223 is away from the locking component 13 to avoid the locking component 13 and will not interfere with the movement of the locking component 13. The pedal body 11 is in a bidirectional control state.

[0067] Continue reading Figure 1 and Figure 2 In some embodiments of this utility model, the adjusting body 222 includes an adjusting shaft 2221, a fastener 2222, and an elastic element 2223.

[0068] The adjusting shaft 2221 has a cylindrical structure, and its length is greater than that of the limiting shaft 223. The adjusting shaft 2221 and the adjusting base 221 can be integrally installed, or they can be installed separately. When the adjusting shaft 2221 and the adjusting base 221 are installed separately, the adjusting shaft 2221 can be welded to the adjusting base 221, or it can be connected to the adjusting base 221 by an interference fit.

[0069] For example, in an embodiment of this utility model, the adjusting base 221 is provided with a first mounting hole 2211 and a second mounting hole 2212 spaced apart. The adjusting shaft 2221 is installed in the first mounting hole 2211 with an interference fit, and the limiting shaft 223 is installed in the second mounting hole 2212 with an interference fit. When the adjusting shaft 2221 is rotated, it can drive the adjusting base 221 to rotate synchronously, thereby causing the limiting shaft 223 to rotate to achieve position switching.

[0070] A thread is provided at the end of the adjusting shaft 2221 that is away from the adjusting base 221. The fastener 2222 can be a nut or similar structure, and the fastener 2222 is threaded onto the adjusting shaft 2221. The elastic element 2223 is a spring or similar structure, and the elastic element 2223 is sleeved on the adjusting shaft 2221. One end of the elastic element 2223 abuts against the limiting base 21, and the other end of the elastic element 2223 abuts against the fastener 2222.

[0071] The center of the positioning hole 211 is equidistant from the center of the first limiting hole 212, the second limiting hole 213, or the third limiting hole 214. The adjusting shaft 2221 is positioned within the positioning hole 211, and its length is greater than that of the limiting shaft 223. When the adjusting shaft 2221 is pulled, the elastic element 2223 is compressed to restore its elastic deformation. The adjusting base 221 and the limiting shaft 223 move synchronously with the adjusting shaft 2221 until the limiting shaft 223 disengages from the limiting base 21. Then, the adjusting shaft 2221 is rotated to drive the adjusting base 221 and the limiting shaft 223 to rotate synchronously, allowing the limiting shaft 223 to move within the first limiting hole 212, the second limiting hole 213, or the third limiting hole 214 to achieve position switching. After determining the position of the limiting shaft 223, the adjusting shaft 2221 is released, and the elastic element 2223 restores its elastic deformation to drive the adjusting shaft 2221 to reset. The limiting shaft 223 is automatically positioned in the corresponding limiting hole. Since the elastic element 2223 has a certain amount of compression, it can prevent the limiting shaft 223 from loosening, that is, prevent the limiting shaft 223 from coming out of the corresponding limiting hole.

[0072] Continue reading Figure 2 In some embodiments of this utility model, the adjusting body 222 further includes a blocking member 2224. The blocking member 2224 is sleeved on the adjusting shaft 2221 and located between the elastic member 2223 and the fastener 2222. The diameter of the blocking member 2224 is larger than the diameter of the elastic member 2223. One end of the elastic member 2223 abuts against the blocking member 2224. The blocking member 2224 can be a baffle or other structure.

[0073] In the above embodiment, fastener 2222 is provided to cooperate with limiting base 21 to position elastic element 2223 on adjusting shaft 2221 and prevent elastic element 2223 from coming off adjusting shaft 2221. Therefore, the diameter of fastener 2222 needs to be larger than the diameter of elastic element 2223.

[0074] In order to allow the size of the fastener 2222 to be unrestricted by the elastic member 2223 and to adopt any size structure, this embodiment of the present invention provides a blocking member 2224 between the elastic member 2223 and the fastener 2222, such that the diameter of the blocking member 2224 is larger than the diameter of the elastic member 2223, and one end of the elastic member 2223 abuts against the blocking member 2224, so that the blocking member 2224 can better limit the elastic member 2223.

[0075] Continue reading Figure 2 In some embodiments of this utility model, the adjusting body 222 further includes a sleeve 2225, which is sleeved on the outside of the adjusting shaft 2221 and located between the limiting base 21 and the blocking member 2224, and the elastic member 2223 is sleeved on the sleeve 2225.

[0076] Among them, the sleeve 2225 has a cylindrical structure. In addition to serving as a guide for the elastic element 2223 and acting as a guide rail, the length of the sleeve 2225 can limit the compression of the elastic element 2223, thereby improving the service life of the elastic element 2223.

[0077] Continue reading Figure 2 In some embodiments of this utility model, the adjusting body 222 further includes a trigger 2226, which is located at one end of the adjusting shaft 2221 away from the fastener 2222, or the trigger 2226 is located on the adjusting base 221 and at the position of the adjusting shaft 2221.

[0078] Among them, the trigger 2226 is a spherical structure and is fixedly connected to the end of the adjusting shaft 2221. Compared with applying force directly to the adjusting shaft 2221, applying force through the trigger 2226 can increase the force-bearing area and make it easier to grip.

[0079] Continue reading Figure 2 In some embodiments of this utility model, the limiting base 21 includes an installation part 215 and a limiting part 216, which are arranged perpendicularly to each other. The installation part 215 is suitable for installation onto the cab floor 30. The positioning hole 211, the first limiting hole 212, the second limiting hole 213 and the third limiting hole 214 are all provided on the limiting part 216.

[0080] Essentially, the front view of the limiting base 21 is an inverted "T" shaped structure, which not only enables stable installation, but also allows for position adjustment by opening positioning holes 211 and corresponding limiting holes on the limiting part 216 and cooperating with the adjusting component 22 to limit, lock, or avoid the locking component 13. The structure is simple and the manufacturing cost is low.

[0081] Figure 5 This is a side view of the locking member 13 in the pedal assembly provided in this embodiment of the utility model.

[0082] Continue reading Figure 2 And see also Figure 5 In some embodiments of this utility model, the locking member 13 has a first end and a second end that are arranged opposite to each other, with a certain length extending between the first end and the second end. The first end is detachably connected to the pedal body 11, and the second end is adapted to cooperate with the adjusting member 22.

[0083] The first end has two connecting holes arranged side by side, through which the locking member 13 is connected to the pedal body 11 and remains relatively fixed. The second end has a locking hole 131 and a limiting groove 132. The distance L1 between the center of the locking hole 131 and the center of the limiting groove 132 is equal to the length L2 of the center line of the first limiting hole 212 and the second limiting hole 213.

[0084] In the first position, the limiting shaft 223 passes through the first limiting hole 212 and the locking hole 131 in sequence, fixing the locking member 13 on the limiting base 21, so that the pedal body 11 is in the locked state.

[0085] In the second position, the limiting shaft 223 is adapted to engage with the limiting groove 132 to limit the locking member 13, so that the pedal body 11 is in a one-way control state.

[0086] Figure 6 This is a schematic diagram of the structure of the adjusting component 22 in the first position of the pedal assembly provided in this embodiment of the utility model.

[0087] See Figure 6 In some embodiments of this utility model, the working machinery, such as the hydraulic excavator, can perform standard operations in bucket mode. At this time, the auxiliary system does not work, that is, the bidirectional foot valve 12 does not need to be operated. In order to prevent misoperation, the bidirectional foot valve 12 needs to be locked.

[0088] In practice:

[0089] By pulling the trigger 2226 at the end of the adjusting shaft 2221, the spring is compressed along the outer circumference of the sleeve 2225; the adjusting base 221 rotates around the adjusting shaft 2221, causing the limiting shaft 223 to rotate to the position of the first limiting hole 212 of the limiting base 21. Releasing the trigger 2226 causes the spring to return to its original position under the action of elastic force. At this time, the limiting shaft 223 passes through the first limiting hole 212 and the locking hole 131 of the locking member 13 in sequence, preventing the pedal body 11 from moving back and forth, thus achieving the locking purpose.

[0090] Figure 7 This is one of the structural schematic diagrams of the adjusting component 22 in the second position of the pedal assembly provided in this embodiment of the utility model. Figure 8 This is the second schematic diagram of the adjustment component 22 in the second position of the pedal assembly provided in this embodiment of the utility model.

[0091] See Figure 7 and Figure 8In some embodiments of this utility model, the operating machinery, such as the hydraulic excavator, can work in the breaker mode. In this case, the bidirectional foot valve 12 is required to be stepped forward only and not backward, that is, the pedal body 11 works in one direction. In order to prevent misoperation, it is necessary to restrict the pedal body 11 from being stepped backward.

[0092] In practice:

[0093] By pulling the trigger 2226 at the end of the adjusting shaft 2221, the spring is compressed along the outer circumference of the sleeve 2225, causing the limiting shaft 223 to disengage from the first limiting hole 212. The adjusting base 221 rotates around the adjusting shaft 2221, causing the limiting shaft 223 to rotate to the position of the second limiting hole 213 of the limiting base 21. Releasing the trigger 2226 causes the spring to reset under the action of elastic force. At this time, the limiting shaft 223 extends through the second limiting hole 213 and is located on the movement path of the locking member 13, so that the pedal body 11 can only move forward and cannot move backward. When moving backward, the limiting groove 132 is engaged on the limiting shaft 223 to limit the movement, and the pedal body 11 can only be stepped on in one direction forward.

[0094] Figure 9 This is one of the structural schematic diagrams of the adjusting component 22 in the third position of the pedal assembly provided in this embodiment of the utility model. Figure 10 This is the second schematic diagram of the adjustment component 22 in the third position of the pedal assembly provided in this embodiment of the utility model. Figure 11 This is the third schematic diagram of the adjustment component 22 in the third position of the pedal assembly provided in this embodiment of the utility model.

[0095] See Figures 9 to 11 In some embodiments of this utility model, when the working machinery, such as the hydraulic excavator, is working in the mode of hydraulic shears or demolition machine, the bidirectional foot valve 12 needs to be stepped on in both the forward and backward directions, that is, the pedal body 11 needs to work in both directions.

[0096] In practice:

[0097] The trigger 2226 at the end of the adjusting shaft 2221 is compressed by the spring along the outer circumference of the sleeve 2225, causing the limiting shaft 223 to disengage from the second limiting hole 213. The adjusting base 221 rotates around the adjusting shaft 2221, causing the limiting shaft 223 to rotate to the position of the third limiting hole 214 of the limiting base 21. Releasing the trigger 2226 causes the spring to return to its original position under elastic force. At this time, the limiting shaft 223 extends through the third limiting hole 214 to avoid the locking member 13. At this time, the locking member 13 is neither locked nor limited, and the pedal body 11 can move forward and backward.

[0098] This utility model also provides a working machine, including a cab and a pedal assembly as described above, wherein the pedal assembly is disposed in the cab.

[0099] Since the work machinery includes the aforementioned pedal assembly, which can be applied in the cab of the work machinery, the work machinery possesses all the advantages of the aforementioned pedal assembly, enabling the work machinery to operate in an orderly manner under different attachment conditions.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pedal assembly, characterized in that, include: The pedal assembly includes a pedal body and a two-way foot valve. The two-way foot valve is adapted to be installed on the cab floor. The pedal body is disposed on the two-way foot valve and is used to control the fluid flow of the two-way foot valve. The pedal body is provided with a locking element. The limiting component includes a limiting base and an adjusting component. The limiting base is adapted to be installed on the cab floor, and the adjusting component is rotatably disposed on the limiting base and adapted to switch between a first position, a second position, and a third position. In the first position, the adjusting component fixes the locking member to the limiting base, so that the pedal body is in a locked state; In the second position, the adjusting component is located on the movement path of the locking member and is used to limit the locking member so that the pedal body is in a one-way control state. In the third position, the adjusting component avoids the locking component, so that the pedal body is in a bidirectional control state.

2. The pedal assembly according to claim 1, characterized in that, The adjusting component includes an adjusting base, on which an adjusting body and a limiting shaft are spaced apart; The limiting base is provided with positioning holes, a first limiting hole, a second limiting hole and a third limiting hole at intervals. The first limiting hole, the second limiting hole and the third limiting hole are all located on a preset pitch circle. The preset pitch circle is centered on the center of the positioning hole and has a radius of distance between the center of the positioning hole and the center of the first limiting hole, the second limiting hole or the third limiting hole. The distance between the adjusting body and the limiting shaft is equal to the radius of the preset pitch circle. The adjusting body is rotatably disposed in the positioning hole, and the limiting shaft is adapted to switch between each limiting hole to achieve the corresponding position switching.

3. The pedal assembly according to claim 2, characterized in that, The regulating body includes: An adjusting shaft is rotatably disposed in the positioning hole; Fastener, threadedly connected to one end of the adjusting shaft away from the adjusting base; An elastic element is sleeved on the adjusting shaft, with one end of the elastic element abutting the limiting base and the other end of the elastic element abutting the fastener.

4. The pedal assembly according to claim 3, characterized in that, The adjusting body also includes a blocking member, which is sleeved on the adjusting shaft and located between the elastic member and the fastener. The diameter of the blocking member is larger than the diameter of the elastic member, and the other end of the elastic member abuts against the blocking member.

5. The pedal assembly according to claim 4, characterized in that, The adjusting body also includes a sleeve, which is sleeved on the outside of the adjusting shaft and located between the limiting base and the blocking member, and the elastic member is sleeved on the sleeve.

6. The pedal assembly according to claim 3, characterized in that, The adjustment body further includes a trigger, which is located at the end of the adjustment shaft away from the fastener, or the trigger is located on the adjustment base and at the position of the adjustment shaft.

7. The pedal assembly according to claim 2, characterized in that, The limiting base includes a mounting part and a limiting part, the mounting part and the limiting part are perpendicular to each other, and the mounting part is adapted to be installed on the cab floor. The positioning hole, the first limiting hole, the second limiting hole, and the third limiting hole are all provided on the limiting part.

8. The pedal assembly according to any one of claims 2 to 7, characterized in that, The locking member has a first end and a second end that are disposed opposite to each other, with a certain length between the first end and the second end. The first end is detachably connected to the pedal body, and the second end is adapted to cooperate with the adjusting component.

9. The pedal assembly according to claim 8, characterized in that, The second end is provided with a locking hole and a limiting groove, and the distance between the center of the locking hole and the center of the limiting groove is equal to the length of the center line of the first limiting hole and the second limiting hole; In the first position, the limiting shaft passes through the first limiting hole and the locking hole in sequence, so that the pedal body is in a locked state; In the second position, the limiting shaft is adapted to engage with the limiting groove to limit the locking member, so that the pedal body is in a one-way control state.

10. A type of operating machinery, characterized in that, It includes a driver's cab and a pedal assembly as described in any one of claims 1 to 9, the pedal assembly being disposed in the driver's cab.

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